MISSION WEST PROPERTIES INC
POS AM, 1999-02-11
OPERATORS OF NONRESIDENTIAL BUILDINGS
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       As filed with the Securities and Exchange Commission on February __, 1999
                                                  Registration No. 333-52835-99

===============================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

       POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-4 REGISTRATION STATEMENT
                                       ON
                                    FORM S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                          MISSION WEST PROPERTIES, INC.
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)


              MARYLAND                                 952635431
    (STATE OR OTHER JURISDICTION                   (I.R.S. EMPLOYER
        OF INCORPORATION OR                       IDENTIFICATION NO.)
           ORGANIZATION)

                                                     CARL E. BERG
                                             PRESIDENT AND CHIEF EXECUTIVE
                                                        OFFICER
        10050 BANDLEY DRIVE                  MISSION WEST PROPERTIES, INC.
       CUPERTINO, CALIFORNIA                      10050 BANDLEY DRIVE
             95014-2188                    CUPERTINO, CALIFORNIA 95014-2188
           (408) 725-0700                           (408) 725-0700
    (Address including zip code,           (Address including zip code, and
  and telephone number, including             telephone number, including
     area code, of registrant's               area code, of registrant's
    principal executive offices)             principal executive offices)

                              -------------------

                                  COPIES TO:
                                ALAN B. KALIN
                              GRAHAM & JAMES LLP
                                600 HANSEN WAY
                       PALO ALTO, CALIFORNIA 94304-1043
                              -------------------

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
           As soon as practicable following the effectiveness of this
                            Registration Statement.
                              -------------------

      If the only  securities  being  registered  on this Form are being offered
pursuant to dividend or interest  reinvestment  plans,  check the following box.
|_|

      If any of the securities  being  registered on this Form are to be offered
on a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act
of 1933,  other than  securities  offered only in  connection  with  dividend or
interest reinvestment plans, please check the following box. |X| If this Form is
filed to register additional  securities for an offering pursuant to Rule 462(b)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of earlier effective  registration  statement for
the same offering. |_|

      If this Form is a  post-effective  amendment filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering.|_|

     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. |_|

     *THIS REGISTRATION STATEMENT IS FILED AS POST-EFFECTIVE  AMENDMENT NO. 1 TO
THE  REGISTRANT'S  FORM S-4  REGISTRATION  STATEMENT NO.  333-52835-99  DECLARED
EFFECTIVE  ON  NOVEMBER  23,  1998.  ALL FILING  FEES WERE PAID WITH THE EARLIER
REGISTRATION STATEMENT.

   THE  REGISTRANT  HEREBY  AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER  AMENDMENT  WHICH  SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE  SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.

===============================================================================
<PAGE>


THE  INFORMATION  IN THIS  PROSPECTUS  IS NOT COMPLETE  AND MAY BE CHANGED.  THE
SECURITIES  DESCRIBED IN THIS PROSPECTUS MAY NOT BE SOLD UNTIL THE  REGISTRATION
STATEMENT FILED WITH THE SECURITIES AND EXCHANGE  COMMISSION IS EFFECTIVE.  THIS
PROSPECTUS IS NOT AN OFFER TO SELL THESE  SECURITIES AND IT IS NOT SOLICITING AN
OFFER TO BUY THE SECURITIES IN ANY STATE WHERE THE OFFER
OR SALE IS NOT PERMITTED.






                 SUBJECT TO COMPLETION, DATED FEBRUARY __, 1999

                                  PROSPECTUS

                         MISSION WEST PROPERTIES, INC.
                       6,370,058 Shares of common stock
                                $.001 par value

     The stockholders of Mission West Properties, Inc. listed below are offering
and selling 6,370,058 shares of common stock, under this prospectus.  All of the
selling  stockholders  purchased  their shares from us on or after  December 29,
1998 under the terms of May 1998 stock purchase  agreements.  Some or all of the
selling stockholders expect to sell their shares.

      The selling  stockholders  may offer their shares of common stock  through
public or  private  transactions,  on or off the  United  States  exchanges,  at
prevailing market prices, or at privately negotiated prices.

     The common stock is listed on the American  Stock  Exchange and the Pacific
Exchange and trades on these stock  exchanges with the symbol "MSW". On February
__,  1999 the  closing  price of one  share of  common  stock,  as quoted on the
American Stock Exchange was $____.

                                 ------------

      THE  SHARES  OF COMMON  STOCK  INVOLVE  A HIGH  DEGREE OF RISK.  SEE "RISK
FACTORS" BEGINNING ON PAGE 2.

                                 ------------

           The date of this prospectus is  ________ __, 1999.



<PAGE>




                                  THE COMPANY

      We are engaged in the  management,  leasing,  marketing,  development  and
acquisition of R&D office properties,  primarily located in the "Silicon Valley"
portion  of the San  Francisco  Bay Area.  We  currently  manage  71  properties
totaling 4.51 million  square feet,  which are owned by four separate  operating
partnerships.  We are  the  sole  general  partner  of  each  of  the  operating
partnerships.  In 1999,  we will elect to be taxed as a real  estate  investment
trust   ("REIT")  for  federal  income  tax  purposes  and  will  operate  as  a
self-managed, self-administered and fully integrated REIT.

      Our  principal  executive  offices  are  located at 10050  Bandley  Drive,
Cupertino, California 95014, and our telephone number is (408) 725-0700.

                                 RISK FACTORS

     In  addition  to  the  other  information  contained  in  this  prospectus,
investors should consider  carefully the following risk factors before making an
investment  decision  concerning  the common  stock.  This  prospectus  contains
"forward-looking  statements"  within  the  meaning  of the  Private  Securities
Litigation  Reform Act of 1995 (the "Reform Act"). In accordance with the Reform
Act, cautionary  statements set forth below and additional cautionary statements
contained  in the section  entitled  "Management's  Discussion  and  Analysis of
Financial  Condition and Results of Operations" in the Company's Form 10-Q/A for
the  quarter  ended   September  30,  1998  pertain  to  these   forward-looking
statements.  These cautionary statements identify certain important factors that
could   cause   actual   results  to  differ   materially   from  those  in  the
forward-looking statements and from historical trends.

DEPENDENCE ON CARL E. BERG

      We are  substantially  dependent  upon the leadership of Carl E. Berg, our
Chairman and Chief Executive Officer.  He manages our day-to-day  operations and
devotes a significant portion of his time to our affairs, but he has a number of
other  business  interests,  as well.  Some of  these  other  interests  involve
investment  and director  relationships  with a number of technology  companies,
including some of our tenants. We obtain valuable  information about our markets
and business  opportunities from Mr. Berg's other activities.  Losing Mr. Berg's
knowledge and abilities could have a material adverse effect on our business and
the value of the common stock.

CONTROL OF MISSION WEST PROPERTIES AND THE OPERATING PARTNERSHIPS BY MR. BERG
AND HIS AFFILIATES

     OWNERSHIP  INTEREST.  Mr. Berg, his brother Clyde J. Berg, members of their
family and certain trusts and other entities which they and their family members
control (the "Berg  Group") own limited  partnership  interests  ("L.P.  Units")
representing  approximately 81.8% ownership of the operating  partnerships.  The
L.P.  Units  may  be  converted  into  shares  of  common  stock  under  certain
circumstances  which upon conversion  would represent  voting control of Mission
West  Properties.  The Berg  Group's  ability to exchange  their L.P.  Units for
common stock permits them to exert substantial influence over the management and
direction of our corporation.

     BOARD OF DIRECTORS REPRESENTATION. The Berg Group has the right to nominate
two of our current five directors for election to the board of directors as long
as they and their  affiliates  beneficially own at least 15% of the total number
of our outstanding  securities,  including all  securities,  such as L.P. Units,
exchangeable  or redeemable  for common stock or any other voting stock.  If the
Berg Group's ownership  percentage falls below 15% but is at least 10%, the Berg
Group  has the  right to  nominate  one  person  for  election  to our  board of
directors.  Their right to nominate directors may be considered to give the Berg
Group and Mr. Berg  substantial  control and influence  over the  management and
direction of our corporation.

     SPECIAL BOARD VOTING PROVISIONS.  Our governing corporate documents,  which
are our  Articles of  Amendment  and  Restatement  and our Bylaws  also  provide
substantial control rights for Mr. Berg and the Berg Group. These rights include
a  requirement  that Mr. Berg or someone he has  designated  to replace him as a
director approve certain fundamental corporate actions,  including amendments to
our governing corporate  documents and any merger,  consolidation or sale of all
or substantially all of our assets or the assets of the operating  partnerships.
In addition,  our Bylaws provide that a quorum necessary to hold a valid meeting
of the board of directors  must include Mr. Berg or someone he has designated to
replace him as a director.  Also,  directors  representing  more than 75% of the
entire board of directors must approve other  significant  transactions  such as
incurring debt above certain amounts and conducting  business other than through
the operating partnerships.

      LIMITED  PARTNER  APPROVAL  RIGHTS.  Mr. Berg and other limited  partners,
including other members of the Berg Group,  also may restrict our operations and
activities  through rights  provided under the terms of the Amended and Restated
Agreement  of  Limited   Partnership   which   governs  each  of  the  operating
partnerships  and our legal  relationship  to each operating  partnership as its
general partner.

POTENTIAL CONFLICTS OF INTEREST WITH THE BERG GROUP

     Mr. Berg and other members of the Berg Group possess  significant rights to
influence  and control the Company  and the  operating  partnerships  and have a
variety of interests that may not be consistent  with the interests of our other
stockholders.  For example,  our headquarters are leased from an entity owned by
Mr.  Berg and other Berg Group  members,  and we pay them rent of  approximately
$15,000  per month.  Although  Mr.  Berg has agreed to provide us with the first
opportunity to pursue R&D office property development and acquisition activities
in  Washington,  Oregon  and  California,  there  are  many  other  real  estate
activities and other business  activities that Mr. Berg and other members of the
Berg  Group are free to  pursue.  If we  decline  an  opportunity  that has been
offered to us, Mr. Berg may pursue it. This would reduce the amount of time that
he could  devote to our affairs and could  result in the  development  by him or
other Berg Group  members of  properties  that compete with our  properties  for
tenants. In general, we have agreed to limit the liability of Mr. Berg and other
members of the Berg Group to our corporation and stockholders arising from their
pursuit of these other opportunities. Mr. Berg and other Berg Group members have
agreed that all new  transactions  between us and any of them, or between us and
any entity in which they  directly  or  indirectly  own 5% or more of the equity
interests,  including  the  operating  partnerships  for this  purpose,  must be
approved by the Independent Directors Committee of our board of directors.  This
Committee  currently consists of three directors who are independent of Mr. Berg
and the other members of the Berg Group.

     EXCLUDED  PROPERTIES.  Mr.  Berg and other  members  of the Berg Group have
retained   certain  R&D  office   properties  in  which  we  and  the  operating
partnerships have no ownership interests.  Under certain circumstances,  efforts
of Mr. Berg to lease these other  properties may interfere with similar  efforts
on our behalf.

     PENDING DEVELOPMENT PROJECTS.  Mr. Berg and other members of the Berg Group
currently own four pending  development  projects  located in the Silicon Valley
that  represent  a  potential  total  of 11 R&D  office  properties  aggregating
approximately  950,000  rentable square feet. We and the operating  partnerships
have  agreed  under the terms of a Pending  Projects  Acquisition  Agreement  to
acquire  each of these  properties  from Mr. Berg and other  members of the Berg
Group as it is  completed  and leased.  The sellers may elect to receive cash or
L.P.  Units at a value of $4.50 per unit. As the current market price of a share
of common stock is $____, this valuation  represents a substantial discount from
the current  market value of the common stock that may be issued in exchange for
these L.P. Units. The terms of the Pending Projects  Acquisition  Agreement were
agreed  upon in May 1998 prior to the  re-commencement  of trading of our Common
Stock,  however. Mr. Berg and other members of the Berg Group currently have the
right to obtain as many as 33,513,906  additional L.P. Units in exchange for the
pending   development   projects.   They  may  elect  to  receive  part  of  the
consideration in cash. In addition, prior to the sale of any of these properties
the  sellers  may  place  debt  on  the  property  that  we  and  the  operating
partnerships  would be required to assume.  The amount of any assumed debt would
reduce the value of the  acquired  property in  determining  the amount of other
consideration in the form of cash or L.P. Units payable to the sellers, however.
The rights of Mr. Berg and other Berg Group members  under the Pending  Projects
Acquisition Agreement permit them to acquire substantial additional interests in
the operating partnerships and, in the event of any exchange of their L.P. Units
for common stock, in our corporation, as well.

     BERG LAND  HOLDINGS.  Mr. Berg and other members of the Berg Group also own
several  parcels  of  unimproved  land  in the  Silicon  Valley  that we and the
operating  partnerships  have the right to  acquire  under the terms of the Berg
Land Holdings  Option  Agreement.  Mr. Berg and the other Berg Group members are
not obligated to exercise  certain  options they hold to acquire the  properties
that are  subject  to the  agreement.  As a result,  we may lose the  ability to
expand our  portfolio  of  properties  and to  increase  our income  through the
acquisition  of those  properties.  In  addition,  we have agreed to pay a fixed
amount plus additional  charges for any of the properties that we do acquire and
must pay the acquisition  price in cash unless  otherwise agreed by the sellers.
At the time of acquisition,  these  properties may be encumbered by debt that we
or the  operating  partnerships  will be required to assume.  An increase in our
indebtedness could materially adversely affect our financial condition,  results
of operations or ability to make cash  distributions  to our  stockholders.  See
"--Real   Estate   Investment   Considerations,"    "--Uncertainties   Regarding
Distributions to Stockholders."  The exercise of our options under the Berg Land
Holdings Option  Agreement is subject to approval by the  Independent  Directors
Committee of our board of directors.

     TAX  CONSEQUENCES  OF  SALE OF  PROPERTIES.  Many  of our  properties  have
unrealized  taxable  gain,  which,  if sold,  could  create  adverse  income tax
consequences for limited partners of the operating partnerships. Mr. Berg, Clyde
J.  Berg,  and one other  limited  partner  have the right to prevent us and the
operating  partnerships  from  selling  or  transferring  properties  which they
designate in any taxable transaction for a period of ten years. As a result, our
opportunities to sell those properties may be limited. If we need to sell any of
those properties to raise cash to service our debt, acquire new properties,  pay
cash  distributions to stockholders,  or for other working capital purposes,  we
may be unable to do so.

     TERMS OF TRANSFERS;  ENFORCEMENT OF AGREEMENT OF LIMITED  PARTNERSHIP.  The
terms of the Pending  Projects  Acquisition  Agreement,  the Berg Land  Holdings
Option Agreement,  the partnership agreement of each operating partnership,  and
the terms of other  material  agreements in which we have acquired our interests
in the operating partnerships and the properties formerly controlled by Mr. Berg
and  members  of  the  Berg  Group  were  not  determined  through  arm's-length
negotiations.  In  addition,  Mr.  Berg and  representatives  of the Berg  Group
sitting on our board of directors  may be subject to conflicts of interest  with
respect  to their  obligations  as our  directors  to  enforce  the terms of the
partnership agreement of each operating partnership when it conflicts with their
personal  interests.  In addition,  the terms of our  Articles of Amendment  and
Restatement and Bylaws were not determined  through  arm's-length  negotiations.
Some of these terms are not as favorable as those that could have been  obtained
through arms'-length negotiations.

     RELATED PARTY DEBT. We are liable for a loan of  approximately  $18 million
payable to Berg & Berg  Enterprises,  Inc., which is a member of the Berg Group.
This loan is secured by three of our  properties  and matures in March 1999.  We
believe  that we will be able to repay that loan with  proceeds of our  existing
line of credit or other  sources of working  capital.  Effective  September  30,
1998,  we  assumed a $100  million  line of credit  with  Wells  Fargo Bank N.A.
previously provided to and guaranteed by the members of the Berg Group, which is
secured by 14 of our properties. We have the right to draw on the line of credit
and are liable for  repayment  of all  amounts  owing  under the line of credit,
which  totaled  $27,200,992  as of December  31,  1998.  The Berg Group  members
continue to be liable as guarantors  under the line of credit,  which expires in
October  1999.  If we are unable to repay our debts to Berg & Berg  Enterprises,
Inc.  or Wells  Fargo  Bank when due,  however,  Mr.  Berg or other  Berg  Group
Members,  in addition to the  lenders,  could take action to enforce our payment
obligations.

CHANGES IN POLICIES WITHOUT STOCKHOLDER APPROVAL

      Our board of directors determines the investment and financing policies of
the  operating  partnerships  and our  policies  with  respect to certain  other
activities,  including growth, debt  capitalization,  distribution and operating
policies.  Our board of directors may amend these policies at any time without a
vote of the stockholders.  Changes in these policies could materially  adversely
affect our financial condition,  results of operations, and ability to make cash
distributions to our stockholders.

ANTI-TAKEOVER PROVISIONS

      Provisions  of our Articles of Amendment  and  Restatement  and our Bylaws
could  delay,  defer or  prevent a  transaction  or a change in  control  of our
corporation,  or a similar  transaction,  that might involve a premium price for
holders of common stock or otherwise be in their best interests.

REAL ESTATE INVESTMENT CONSIDERATIONS

      Real  property  investments  are  subject  to  varying  degrees  of  risk.
Investment  returns  available from equity  investments in real estate depend in
large part on the amount of income earned and capital appreciation  generated by
our properties,  as well as our related expenses incurred.  If our properties do
not generate revenues  sufficient to meet operating  expenses,  debt service and
capital  expenditures,  our income  and  ability  to make  distributions  to our
stockholders will be affected adversely.  Income from our properties may also be
adversely  affected by general economic  conditions,  local economic  conditions
such as over  supply  of  commercial  real  estate,  the  attractiveness  of our
properties to tenants and prospective tenants,  competition from other available
rental property, our ability to provide adequate maintenance and insurance,  the
cost of tenant improvements,  leasing commissions and tenant inducements and the
potential of increased  operating  costs,  including real estate taxes.  Various
significant  expenditures  associated with an investment in real estate (such as
mortgage payments, real estate taxes and maintenance expenses) generally are not
reduced when  circumstances  cause a reduction  in revenue from the  investment.
Income from  properties  and real estate values also is affected by a variety of
other factors,  such as governmental  regulations and applicable laws (including
real estate,  zoning and tax laws), interest rate levels and the availability of
financing.

      Our properties and an investment in our common stock are also subject to a
number of specific risks, including the following:

o    Real estate investments are relatively illiquid which limits our ability to
     restructure  our  portfolio  in  response  to changes in  economic or other
     conditions.

o    All of our  properties  are  located  in the  southern  portion  of the San
     Francisco Bay Area commonly  referred to as "Silicon  Valley".  The Silicon
     Valley economy has been strong for the past five years but future increases
     in values and rents for our  properties  depend to a significant  extent on
     the health of this region's economy.  Recent trends suggest that the supply
     of R&D office space  available  for rent has  increased and that the demand
     for such space in Silicon  Valley has declined from near zero vacancy rates
     in early 1998 and late 1997.

o    We might lose key tenants.  Most of our  properties  are occupied by single
     tenants,  many of whom are large,  publicly-traded  electronics  companies.
     Losing a key tenant could  adversely  affect our operating  results and our
     ability to make  distributions  to  stockholders if we are unable to obtain
     replacement tenants promptly.

o    Key tenants could seek the  protection of the  bankruptcy  laws which could
     result in the rejection and  termination of their leases thereby  causing a
     reduction in our income.

o    We intend to engage in additional real estate  acquisition and development.
     These activities involve significant risks in addition to those relating to
     the  ownership  and  operation of existing,  fully-leased  properties.  For
     example,  required  approvals may not be obtained or may take more time and
     resources to obtain them than expected,  construction  may not be completed
     on schedule or on budget,  and the properties  may not achieve  anticipated
     rent  or  occupancy   levels.   These   activities  also  depend  upon  the
     availability  of  financing  on  terms  that do not  adversely  impact  our
     operating   results   and  our  ability  to  make   distributions   to  our
     stockholders.

o    Our properties are subject to substantial indebtedness. If we are unable to
     make required mortgage  payments,  a loss could be sustained as a result of
     foreclosure on our properties by the mortgagee. We have adopted a policy of
     maintaining a consolidated ratio of debt to total market  capitalization of
     less than 50%, which may not be exceeded  without the approval of more than
     75% of our entire board of  directors.  Our board of directors  may vote to
     change this policy,  however,  and we could  become more highly  leveraged,
     resulting  in an  increased  risk of  default  on our  obligations,  and an
     increase  in debt  service  requirements  that could  adversely  affect our
     financial  condition,  our  operating  results  and  our  ability  to  make
     distributions to our stockholders.

o    Our properties may expose us to liabilities under applicable  environmental
     and health and safety laws.

o    We may sustain uninsured losses with respect to some of our properties.

o    All of our  properties  are located in areas that are subject to earthquake
     activity.  Our  insurance  policies do not cover  damage  caused by seismic
     activity,  although they do cover losses from fires after an earthquake. We
     generally do not consider such insurance  coverage to be economical.  If an
     earthquake occurs and results in substantial  damage to our properties,  or
     properties that we may acquire in the future,  we could lose our investment
     in those  properties  and our financial  condition,  operating  results and
     ability  to make  distributions  to our  stockholders  could be  materially
     adversely affected.

FEDERAL INCOME TAX RISKS

     FAILURE  TO  QUALIFY  AS A REIT.  We  intend to elect to be taxed as a REIT
under the federal  income tax laws for the year ending  December  31,  1999.  To
maintain   that  status  we  must  meet  certain   tests  for  income,   assets,
distributions  to  stockholders,   ownership  interests  and  other  significant
conditions.  If we fail to qualify as a REIT in any taxable  year we will not be
allowed a deduction  for  distributions  to our  stockholders  in computing  our
taxable  income  and would be  subject to  federal  income  tax  (including  any
applicable  alternative  minimum tax) on our taxable income at regular corporate
rates.  Moreover,  unless we were entitled to relief under certain provisions of
the tax laws,  we would be  disqualified  from  treatment as a REIT for the four
taxable  years  following  the year in which our  qualification  was lost.  As a
result,  funds available for distribution to our  stockholders  would be reduced
for each of the years involved and, in addition,  we would no longer be required
to make  distributions  to our  stockholders.  Although we  currently  intend to
operate in a manner  designed  to enable us to  qualify  and  maintain  our REIT
status, it is possible that economic, market, legal, tax or other considerations
may cause us to fail to qualify as a REIT,  or may cause our board of  directors
either to refrain from making the REIT  election or to revoke that election once
made.

      REIT DISTRIBUTION REQUIREMENTS. To maintain REIT status we must distribute
as a dividend to our  stockholders at least 95% of our otherwise  taxable income
(after  certain  adjustments)  with  respect  to each tax  year.  We may also be
subject  to a 4%  non-deductible  excise tax in the event our  distributions  to
stockholders  fail to meet certain  other  requirements.  Failure to comply with
these  requirements  could result in our income being  subject to tax at regular
corporate rates and could cause us to be liable for the excise tax.

     OWNERSHIP LIMIT NECESSARY TO MAINTAIN REIT QUALIFICATION.  As a REIT we are
subject to certain  restrictions  on the  percentage  of the total  value of our
stock that may be owned by five or fewer individuals which may not exceed 50% as
determined  under  federal  income  tax laws.  Our  Articles  of  Amendment  and
Restatement  generally prohibit the direct or indirect ownership of more than 9%
of our common stock by any  stockholder.  This limit excludes the members of the
Berg  Group,  who have an  aggregate  ownership  limit of 20%. In  addition,  as
permitted by our Articles of Amendment and  Restatement,  our board of directors
recently  provided an exception to two other  stockholders  that permits them to
collectively  own,  directly or indirectly,  up to 15% of our common stock on an
aggregate basis. In general,  our Articles of Amendment and Restatement prohibit
the  transfer of shares  which  result in a loss of our REIT  qualification  and
provide that any such transfer or any other  transfer which causes a stockholder
to  exceed  the  ownership  limit  will  be  subject  to  mandatory   forfeiture
provisions.

UNCERTAINTIES REGARDING DISTRIBUTIONS TO STOCKHOLDERS

      Our  income  will  consist  primarily  of our  share of the  income of the
operating partnerships, and our cash flow will consist primarily of our share of
distributions from the operating partnerships. Differences in timing between the
receipt of income and the payment of expenses in arriving at our taxable  income
or the taxable income of the operating  partnerships  and the effect of required
debt  amortization  payments  could require us directly or through the operating
partnerships  to  borrow  funds  on a  short-term  basis  to meet  our  intended
distribution policy.

      The amount and timing of distributions  by the operating  partnerships and
of our  distributions  to our  stockholders  will be  determined by our board of
directors. Our board of directors will consider many factors prior to making any
distributions, including the following:

o    The amount of cash available for distribution;

o    The operating partnerships' financial condition;

o    Any  decisions by the board of  directors to reinvest  funds rather than to
     distribute such funds;

o    The operating partnerships' capital expenditures;

o    The  annual  distribution  requirements  under the REIT  provisions  of the
     federal income tax laws; and

o    Other factors as our board of directors deems relevant.

There is no assurance that we will be able to meet or maintain our intended cash
distribution policies.

OUR OBLIGATION TO PURCHASE TENDERED L.P. UNITS

     Each of the limited partners of the operating partnerships (other than Carl
E. Berg and Clyde J. Berg) has the annual right to exercise put rights and cause
the operating  partnerships to purchase a portion of the limited  partner's L.P.
Units at a purchase  price based on the average market value of the common stock
for the 10-trading day period immediately preceding the date of tender. Upon the
exercise  of any such  right by a limited  partner,  we will have the  option to
purchase the tendered L.P.  Units with  available  cash,  borrowed  funds or the
proceeds of an offering of newly issued shares of common stock. These put rights
become  exercisable  on December 29, 1999,  and are available  once a year for a
maximum of one-third of the eligible limited  partners' total L.P. Units. If the
total purchase  price of the L.P. Units tendered by all of the eligible  limited
partners in one year exceeds $1 million,  we or the operating  partnerships will
be entitled to reduce  proportionately  the number of L.P.  Units to be acquired
from each  tendering  limited  partner so that the total purchase price does not
exceed $1  million  dollars.  The  exercise  of these put  rights may reduce the
amount of cash that we have available to distribute to our stockholders.

SHARES ELIGIBLE FOR FUTURE SALE

     There are nearly 8.2 million  shares of common stock  outstanding as of the
date of this prospectus. We cannot predict the effect, if any, that future sales
of shares of common stock,  or the  availability of shares for future sale, will
have on the market price of the common stock.  Sales of  substantial  amounts of
common stock  (including  shares issued in  connection  with the exercise of the
exchange rights held by the limited partners of the operating partnerships),  or
the perception that such sales could occur,  could adversely  affect  prevailing
market  prices for the common  stock.  Additional  shares of common stock may be
issued  to  limited  partners  (subject  to the  applicable  REIT  qualification
ownership  limit),  if they exchange their L.P. Units for shares of common stock
pursuant to their exchange rights,  or may be sold by the Company to raise funds
required to purchase  such L.P.  Units if the limited  partners  elect to tender
L.P.  Units to us using  their put rights.  In  addition,  the pending  offer of
common stock under this prospectus may adversely  affect the market price of the
common stock. Subject to certain rights that we possess to halt offers and sales
of shares of common stock under this prospectus under certain circumstances,  we
intend to maintain the  effectiveness of the registration  statement under which
these  shares are offered for sale with the SEC until the end of December  1999.
See "THE SELLING STOCKHOLDERS."



                                USE OF PROCEEDS

     All net proceeds from the sale of the shares of common stock will go to the
stockholders who offer and sell their shares.  Accordingly,  we will not receive
any of the proceeds from sales of their shares by the selling stockholders.



                           THE SELLING STOCKHOLDERS

     The following  table sets forth the name and the number of shares of common
stock  beneficially  owned by the  stockholders  listed below as of February 11,
1999,  the  number of shares of common  stock  that may be  offered  by  selling
stockholders and the number and percentage of shares to be owned beneficially by
the  selling  stockholders  assuming  the  sale of the  shares  offered  by this
prospectus.  As a condition to receiving our permission to offer and sell shares
of common stock under this  prospectus,  each selling  stockholder  has signed a
Registration  Rights  Agreement  under which the  stockholder  has agreed not to
offer or sell any of such shares from the third  business  day after the date of
the Stop  Trading  Notice  for a period  of up to 30 days.  We will  send a Stop
Trading  Notice  to the  selling  stockholders  if we  determine,  in  our  sole
discretion,  that it  would be  detrimental  to us or our  stockholders  for any
selling stockholder to offer or sell any such shares during the period set forth
in the notice.  In this  prospectus,  the term "selling  stockholders"  includes
donees and pledgees selling shares received from a named  stockholder  after the
date of this prospectus.

      Except as otherwise described below, none of the selling  stockholders has
held any office with, been employed by, or otherwise had a material relationship
with us or our affiliates since February 11, 1996.


<PAGE>






<TABLE>
<CAPTION>
                                                        
                                                             
                                                       
                                                            Percentage of
                                Shares of      Number of     Outstanding     
                               common stock    Shares of       Shares         
                               Beneficially   Common Stock    of Stock                  
                               Owned Before     Offered      Stock After              
Name of Selling Stockholder    Offering (1)     Hereby       Offering (2)                             
- ---------------------------  ---------------  ------------  -------------
<S>                            <C>            <C>                <C> 
Thelmer Aalgaard(3)              128,640         70,000          *
James H. and Edna J.              50,000         40,000          *
  Anderson
Joseph F. Antizzo                 20,000         20,000          *
Bancorp Equities LLC              20,000         20,000          *
Ron Bender                        16,668          5,556          *
Carl and Mary Ann Berg            77,333         50,000          *
  (4)
Howard Clowes                     20,000         20,000          *
Clarion Offshore Fund             13,889         13,889          *
  L.T.D.
  c/o Morty Cohen,
  Investment Manager
Clarion Partners, L.P.            41,667         41,667          *
  c/o Morty Cohen,
  Investment Manager
Mariana P. Cotton                 55,000         55,000          *
  Revocable Living Trust
John J. Dougherty                 30,000         30,000          *
John B. Estill,                    8,892          8,892          *
  Co-Trustee of
  The John and Teresa
  Estill 1977 Trust
Harry L. Fox                      10,000         10,000          *
Walter C.Frank                     2,200          2,200          *
Richard S. Frary                  85,000         85,000          *
Hugh C. Fraser                    17,000         12,000          *
Ian H. Fraser                      5,000          5,000          *
William S. Friedman               80,000         80,000          *
Tom Furlong                        5,000          5,000          *
Thomas L. Gipson                 200,000        200,000          *
James M. Greenleaf                11,000         11,000          *
Jennifer Greenleaf                11,000         11,000          *
Lewis S. Greenleaf III           142,500        142,500          *
Victoria Greenleaf                11,000         11,000          *
Richard V. and Catherine          10,000         10,000          *
  P. Guerin JTWROS
Jeff Harris                       45,000         45,000          *
Helzel Family Foundation          22,000         22,000          *
  (5)
Leo B. and Florence              401,800        401,800          *
  Helzel Living Trust (5)
Lawrence B. Helzel (5) (6)       182,083         80,000          *
Michael H. Weed and               20,000         20,000          *
  Patricia A. Hurley
Ingalls & Snyder Value         1,125,067      1,125,067          *
  Partners, L.P.
Investors Forum                   50,000         50,000          *
Scott A. Katzmann                 11,100         11,100          *
Helzel Kirshman L.P. (6)         100,000        100,000          *
Joseph Klein                      15,000         15,000          *
Michael Knapp (7)                 70,067         60,000          *
Joseph E. Kos and Amy             11,000         11,000          *
  Davis JTWROS
Aaron Kozak Revocable             50,000         50,000          *
  Trust
Lawton S. Lamb                    11,000         11,000          *
Donald M. Liddell, Jr.           100,000        100,000          *
Joel Mael                         25,000         25,000          *
Bradley T. and Wendy R. Marlin    39,609         39,609          *
Marquette National Bank          395,000        335,000          *
  Trust 
  FBO John F. McCarthy
  Charitable Lead Annuities 
  Trust (8)
Marquette National               405,000        400,000          *
  Corporation (9)
Marquette National Bank          720,000        720,000          *
  Trust 
  FBO Dan McCarthy (10)
David L. Mendel                   11,000         11,000          *
John B. and Beverly J.            39,000         39,000          *
  Miles JTWROS
John S. Moran                    250,000        250,000          *
William M. Moran                   5,000          5,000          *
William Moran Jr.                 35,000         35,000          *
Martin and Anne Roher             50,000         50,000          *
  JTWROS
Michael O'Rosky (11)              43,300         22,000          *
Poutiatine Living Trust          111,000        111,000
  dtd 12/28/89
  Ivan S. Poutiatine,
  Trustee
Poutiatine Living Trust           11,000         11,000          *
  dtd 12/28/89
  Lochiel C.Poutiatine,
  Trustee
Michael Poutiatine Trust          55,000         55,000          *
Prism Partners I, LP             418,500        418,500          *
Prism Partners Offshore Fund      31,500         31,500          *
Katherine A. Ray                 100,000        100,000          *
Antonio Rigoni                    18,445         18,445          *
Katharine Plourde Simmons         16,000         16,000          *
William Reed Simmons              39,000         39,000          *
Evelyn Slavin                     11,000         11,000          *
Talkot Crossover Fund LP         333,333        333,333          *
Arnold Toren                      10,000         10,000          *
Dean Witter, Cust. FBO            15,000         15,000          *
  Lindell Van Dyke
  IRA 112-122618-054
Lindell and Lynn Van Dyke         25,000         25,000          *
Carl E. Warden                   109,000        109,000          *
Jeffrey Warmoth                   11,000         11,000          *
David Wollersheim                  4,000          4,000          *
  Revocable Trust
Marlene A. Zielinski              25,000         25,000          *
Raymond Zielinski                 33,000         33,000          *

</TABLE>

- -------- 

(1)  Beneficial  ownership is  determined  in  accordance  with the rules of the
Securities  and  Exchange  Commission  which  generally   attribute   beneficial
ownership  of  securities  to persons who possess  sole or shared  voting  power
and/or investment power with respect to those securities that the person has the
right  to  acquire  within  60 days  of  February  11,  1999.  Unless  otherwise
indicated,  the persons or entities identified in the table have sole voting and
investment  power with respect to all shares shown  beneficially  owned by them.
The numbers do not include  shares of common  stock which may be acquired by the
exchange of L.P. Units, which generally cannot occur within 60 days.

(2) Less than one percent of  outstanding  shares of Common  Stock  indicated by
"*".

(3) Mr. Aalgaard is a director and employee of Berg & Berg Enterprises, Inc., an
affiliate of Carl E. Berg.  Includes (i) 33,400 shares held of record by Carl E.
Berg,  Trustee,  Berg & Berg Profit  Sharing Plan FBO Thelmer G. Aalgaard  Dated
1/1/84, (ii) 4,160 shares held of record by Carl E. Berg,  Trustee,  Berg & Berg
Profit Sharing Plan FBO Thelmer G. Aalgaard Dated 1/1/84, 1997 Contribution, and
(iii) 2,220  shares  held of record by Thelmer G.  Aalgaard,  Custodian,  Rachel
Michaels, Under the California Uniform Gifts to Minor Act.

(4) Mr.  Berg is an  officer  and  director  of the  Company  and of Berg & Berg
Enterprises,  Inc. Includes 27,333 shares of common stock held of record by Berg
& Berg  Enterprises,  Inc.,  of which Mr. Berg  disclaims  beneficial  ownership
except as to his pecuniary interest therein. Mr. Berg is a principal shareholder
of the Company.  Does not include  53,071 shares of common stock held of records
as trustee under various pension and profit sharing plans.
 
(5) Leo B. Helzel and  Lawrence B. Helzel have only voting power with respect to
shares owned by the Helzel Family Foundation,  of which they are directors.  Leo
B. Helzel disclaims  beneficial ownership of the shares held by the Living Trust
except to the extent of his pecuniary interest in the shares.

(6) Mr.  Helzel became a director of Mission West  Properties in December  1998.
Mr. Helzel has voting power with respect to the shares owned by Helzel Kirshman,
L.P. but disclaims any pecuniary interest in one-half of those shares.

(7) Mr. Knapp was  formerly an officer and director of Mission West  Properties.
Mr. Knapp is currently an officer of Berg & Berg Enterprises, Inc., an affiliate
of Carl E.  Berg.  Includes  (i) 3,333  shares  held of record by Carl E.  Berg,
Trustee,  Berg & Berg Enterprises,  Inc. 401K FBO Michael L. Knapp Dated 1/1/84,
(ii) 2,000  shares held of record by Michael L. Knapp,  Custodian,  Ryan Michael
Knapp Under the  California  Uniform  Gifts to Minor Act and (iii) 2,000  shares
held of record by Michael L.  Knapp,  Custodian,  Kayla  Marie  Knapp  Under the
California  Uniform  Gifts to Minor Act.
 
(8) Paul McCarthy may be deemed to be the beneficial  owner of the shares of the
trust  because  he is the  trustee  of the trust,  but he  disclaims  beneficial
ownership  of these  shares  except  to the  extent  of his  pecuniary  interest
therein.

(9) Paul  McCarthy  may be deemed to be the  beneficial  owner of these  shares
because he is the Chairman  and Chief  Executive  Officer of Marquette  National
Corporation, but he disclaims beneficial ownership of these shares except to the
extent of his  pecuniary  interest  therein  as a  minority  shareholder  of the
corporation.

(10) Dan  McCarthy  may be  deemed  to be the  beneficial  owner of all of these
shares.  Mr. McCarthy and an individaul  retirement account for his sole benefit
are separate record holders of shares that are not included in this  prospectus.
The total number of these shares is 150,000.

(11) Mr. O'Rosky is an employee of Berg & Berg  Enterprises,  Inc., an affiliate
of Carl E. Berg.  Mr.  O'Rosky is also the son-in-law of Clyde J. Berg, who is a
director of Berg & Berg Enterprises,  Inc. and brother of Carl E. Berg. Includes
(i) 4,000 shares held of record by Michael J. O'Rosky,  Custodian, Mason Michael
O'Rosky,  Under the California Uniform Gifts to Minor Act; and (ii) 4,000 shares
held of record by Michael J. O'Rosky,  Custodian,  Hannah Rae O'Rosky, Under the
California Uniform Gifts to Minor Act.

                             PLAN OF DISTRIBUTION

      The selling stockholders may offer their shares of common stock at various
times in one or more of the following transactions:

o    on any of the United States securities  exchanges where the common stock is
     listed and traded,  including the American  Stock  Exchange and the Pacific
     Stock Exchange;

o    in the over-the-counter market;

o    in  transactions  other than on such  exchanges or in the  over-the-counter
     market;

o    in connection with short sales of the shares;

o    by pledge to secure debts and other obligations;

o    in  connection  with the writing of  non-traded  and  exchange-traded  call
     options,  in hedge  transactions and in settlement of other transactions in
     standardized or over-the-counter options; or

o    in a combination of any of the above transactions.

      The selling  stockholders  may sell their shares of common stock at market
prices  prevailing  at the time of sale,  at prices  related to such  prevailing
market prices, at negotiated prices, or at fixed prices.


                      WHERE YOU CAN FIND MORE INFORMATION

     This prospectus, filed as a part of a Post-Effective Amendment No. 1 to S-4
Registration Statement on Form S-3 Registration Statement,  does not contain all
the  information  set forth in the  registration  statement  or the exhibits and
schedules to the  registration  statement filed in accordance with the rules and
regulations  of the SEC, and we are  incorporating  omitted  information by this
reference.  Statements  made in this  prospectus  concerning the contents of any
contract,  agreement or other document  filed as an exhibit to the  registration
statement are summaries of the terms of the  contracts,  agreements or documents
and are not  necessarily  complete.  You  should  read each  exhibit  for a more
complete description of the matters involved. The registration statement and the
exhibits filed with the SEC may be inspected,  without charge, and copies may be
obtained at prescribed rates, at the SEC's Public Reference facility  maintained
by the Room, 450 Fifth Street,  N.W.,  Washington,  D.C.  20549.  The public may
obtain  information on the operation of the Public Reference Room by calling the
SEC at 1-800-SEC-0330. The registration statement and other information filed by
the Company with the SEC also are  available at the Web site  maintained  by the
SEC on the World Wide Web at  http://www.sec.gov.  Reports, proxy statements and
other  information  about us filed  with  the SEC may also be  inspected  at the
offices of the American Stock  Exchange,  86 Trinity Place,  New York, New York,
and  the  Pacific  Exchange  Incorporated,   301  Pine  Street,  San  Francisco,
California.

      Under  SEC  rules  we  are  disclosing  additional  information  to you by
referring to documents that we have filed  previously with the SEC.  Information
that we incorporate  by reference into this  prospectus is considered to be part
of this  prospectus,  and  information  that we file  later  with  the SEC  will
automatically update and supersede this information. We incorporate by reference
the  documents  listed  below and any  future  filings we will make with the SEC
under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934:

1. The Form  S-4  Registration  Statement  filed  on May 15,  1998 and  declared
effective   on  November  23,  1998   (Registration   No.   333-52835-99)   (the
"Registration  Statement"),  and the  prospectus  dated  November 23, 1998 filed
pursuant to SEC Rule 424(b)(3).

2. Our Annual Report on Form 10-K for the one-month transition period and fiscal
year ended December 31, 1997.

3. All other reports filed since  December 31, 1997 under Section 13(a) or 15(d)
of the  Securities  Exchange Act of 1934,  including all reports filed after the
date of the  Registration  Statement  and  prior to the  effective  date of this
Post-Effective  Amendment No. 1 to such  Registration  Statement,  including our
report on Form 10-Q/A for the quarter ended September 30, 1998 and our report on
Form 8-K dated December 31, 1998.

4. The description of the common stock contained in the Registration Statement.

      You may request a copy of these  filings,  at no cost upon written or oral
request by writing  or  telephoning  us at the  following  address or  telephone
number:  Mission  West  Properties,   Inc.,  10050  Bandley  Drive,   Cupertino,
California 95014; telephone: (408) 725-0700.


                              RECENT DEVELOPMENTS

     We recently acquired two newly constructed R&D office properties located on
Richard  Avenue  in Santa  Clara,  California  and  Hellyer  Avenue in San Jose,
California  consisting  of a  total  of  approximately  163,000  square  feet of
rentable space. We acquired these properties from Carl E. Berg and other members
of the Berg Group under the Pending Projects Acquisition  Agreement and the Berg
Land  Holdings  Option  Agreement.  We paid  $4,197,600  for the Richard  Avenue
property,  which  consists of  approximately  52,800  rentable  square feet, and
$9,494,000 for the Hellyer  Avenue  property,  which  consists of  approximately
110,000  rentable  square  feet.  Each  property  was  acquired  by a  different
operating partnership,  which assumed debt of $9,605,718 and issued 672,064 L.P.
Units to the  sellers.  Each of the L.P.  Units may be  exchanged  for shares of
common  stock in the same  manner as other L.P.  Units held by the same  limited
partner.  The  terms  of the  acquisitions  were  approved  by  the  Independent
Directors  Committee of our board of directors.  We have agreed with the sellers
of the properties to treat our acquisitions as effective as of September 1, 1998
with respect to the Richard Avenue  property,  and November 1, 1998 with respect
to the Hellyer  Avenue  property.  This has allowed us to earn the rental income
from the properties from the applicable date.

                                 LEGAL MATTERS

     We have received  opinions of counsel from Graham & James,  LLP, Palo Alto,
California  and Ballard  Spahr  Andrews & Ingersoll,  LLP,  Baltimore,  Maryland
concerning  the validity of the shares of common stock  offered for sale by this
prospectus.  A partner of Graham & James,  LLP who is  rendering  services to us
beneficially owns 12,333 shares of common stock.


                                    EXPERTS


     The   consolidated   financial   statements  of  Mission  West   Properties
incorporated by reference to the Annual Report on Form 10-K for the period ended
December 31, 1997 and the Combined  Financial  Statement for the Berg Properties
as of December  31, 1997 and 1996,  and for the three years in the period  ended
December 31,  1997,  the  Statement  of Revenue and Certain  Expenses of Fremont
Properties for the year ended  December 31, 1997 and the Combined  Statements of
Revenue and Certain Expenses for the Kontrabecki  Properties for the years ended
December 31, 1997,  1996 and 1995  included in the  Registration  Statement  and
prospectus  have  been  audited  by   PricewaterhouseCoopers   LLP,  independent
accountants.  Such financial  statements  have been included or  incorporated by
reference  in  reliance   upon  the  reports  of   PricewaterhouseCoopers   LLP,
independent  accountants,  given on the  authority  of said firm as  experts  in
auditing and accounting.


      The  financial  statements as of November 30, 1996 and for each of the two
years then ended  incorporated  in this  prospectus  by  reference to the Annual
Report  on Form  10-K  for the  year  ended  December  31,  1997,  have  been so
incorporated   in  reliance  on  the  report  of   PricewaterhouseCoopers   LLP,
independent  accountants,  given on the  authority  of said firm as  experts  in
auditing and accounting.


<PAGE>

<TABLE>
<CAPTION>

                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

      The  expenses in  connection  with the issuance  and  distribution  of the
securities being registered,  other than underwriting discounts and commissions,
are estimated as follows:

Securities and Exchange Commission Registration Fee.  Previously paid
<S>                                                         <C>   
Legal fees and expenses*............................         $7,500
Accounting fees and expenses*.......................          5,000
Printing expenses/Transfer agent's fees*............            500
                                                            --------         
      Total*........................................        $13,000 
</TABLE>

- ----------------

*  Estimated.


ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS


      Section 2-418 of the Maryland  General  Corporation Law ("MGCL") permits a
Maryland  corporation  to  include  in its  charter  a  provision  limiting  the
liability of its directors and officers to the corporation and its  stockholders
for money damages  except for liability  resulting from (a) actual receipt of an
improper  benefit or profit in money,  property or  services,  or (b) active and
deliberate  dishonesty  established by a final judgment as being material to the
cause of action.  Article IX of the Articles of  Amendment  and  Restatement  of
Mission West  Properties,  Inc. (the "Charter")  contains such a provision which
eliminates such liability to the maximum extent permitted by the MGCL.

      Section  2-418 of the MGCL  requires a  corporation  (unless  its  charter
provides  otherwise,  which the  Charter  does not) to  indemnify  a director or
officer who has been successful,  on the merits or otherwise,  in the defense of
any  proceeding  to which he is made a party by  reason of his  service  in that
capacity.  The MGCL permits a  corporation  to indemnify  its present and former
directors  and officers,  among others,  against  judgments,  penalties,  fines,
settlements,  and reasonable  expenses  actually  incurred by them in connection
with any proceeding to which they may be made a party by reason of their service
in  those or  other  capacities  unless  it is  established  that (a) the act or
omission of the  director or officer was  material to the matter  giving rise to
the  proceeding  and (i) was  committed  in bad faith or (ii) was the  result of
active and deliberate dishonesty,  (b) the director or officer actually received
an improper  personal benefit in money,  property or services or (c) in the case
of any  criminal  proceeding,  the director or officer had  reasonable  cause to
believe  that the act or  omission  was  unlawful.  However,  under the MGCL,  a
Maryland  corporation may not indemnify for an adverse  judgment in a suit by or
in the right of the corporation or for a judgment of liability on the basis that
personal benefit was improperly  received,  unless in either case a court orders
indemnification  and then only for  expenses.  In  addition,  the MGCL permits a
corporation  to advance  reasonable  expenses to a director or officer  upon the
corporation's receipt of (a) a written affirmation by the director or officer of
his good faith  belief  that he has met the  standard of conduct  necessary  for
indemnification  by the corporation  and (b) a written  undertaking by him or on
his behalf to repay the amount paid or reimbursed by the corporation if it shall
ultimately be determined that the standard of conduct was not met.

     The Charter also authorizes  Mission West  Properties,  Inc. to the maximum
extent  permitted by Maryland law, to obligate itself to indemnify and to pay or
reimburse reasonable expenses in advance of final disposition of a proceeding to
any present or former  director  or  officer,  or any  individual  who,  while a
director of Mission  West  Properties,  Inc.  and at the request of Mission West
Properties,  Inc.,  serves  or  has  served  another  corporation,  real  estate
investment trust,  partnership,  joint venture,  trust, employee benefit plan or
any  other  enterprise  as a  director,  officer,  partner  or  trustee  of such
corporation,  real estate investment trust,  partnership,  joint venture, trust,
employee  benefit  plan or  other  enterprise  from  and  against  any  claim or
liability to which such person may become subject or which such person may incur
by reason of his  status as a present or former  director  or officer of Mission
West  Properties,  Inc.  Article  XII  of  the  Bylaws  obligates  Mission  West
Properties,  Inc., to the maximum extent permitted by Maryland law, to indemnify
and to pay or reimburse reasonable expenses in advance of final disposition of a
proceeding to (i) any present or former  director or officer who is made a party
to the  proceeding  by  reason  of his  service  in that  capacity  or (ii)  any
individual  who,  while a director of Mission West  Properties,  Inc. and at the
request  of  Mission  West  Properties,   Inc.  serves  or  has  served  another
corporation,  real estate, investment trust, partnership,  joint venture, trust,
employee benefit plan or any other enterprise as a director, officer, partner or
trustee of such corporation,  real estate investment trust,  partnership,  joint
venture,  trust,  employee  benefit plan or other  enterprise  and who is made a
party to the proceeding by reason of his service in that  capacity.  The Charter
and Bylaws also permit  Mission West  Properties,  Inc. to indemnify and advance
expenses to any person who served a predecessor of Mission West Properties, Inc.
in any of the  capacities  described  above and any employee or agent of Mission
West Properties, Inc. and or a predecessor of Mission West Properties, Inc.


ITEM 16.  EXHIBITS.
<TABLE>
<CAPTION>

Exhibit No.   Description
- ------------  ------------------------------------------------------------

    <S>       <C>
     2.1      Merger Agreement and Plan of Merger between Mission West
              Properties and Mission West Properties, Inc.
                                                                
     3.1**    Articles of Amendment and Restatement of Mission West Properties,
              Inc.

     3.2**    Restated Bylaws of Mission West Properties, Inc.

     5.1**    Opinion  of  Graham  &  James  LLP   regarding  the  validity  of
              the securities   issued   by  the   Company   to  be   exchanged
              in  the Reincorporation Merger

     5.2**    Opinion  of  Ballard  Spahr  Andrews &  Ingersoll  LLP  regarding
              the validity  of  securities  issued  by  Mission   West-Maryland
              in  the Reincorporation Merge

     10.1.1   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P.

     10.1.2   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P. I

     10.1.3   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P. II

     10.1.4   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P. III

     10.2     Exchange Rights Agreement between the Company and the Limited 
              Partners

     10.4.1** Acquisition  Agreement,  dated  as of May  14,  1998,  among  the
              Company, Certain Partnerships and the Berg Group (as defined
              therein)

     10.4.2** Amendment to Acquisition Agreement, dated as of July 1, 1998

     10.6     Pending  Projects   Acquisition   Agreement  among  the  Company,  
              the Operating Partnership and the members of the Berg Group

     10.7     Berg Land Holdings  Option  Agreement  between the Company and 
              certain members of the Berg Group

     10.8     Form of Registration Rights Agreement

     23.1**   Consent  of Graham & James LLP  (included  in the  opinion  filed
              as Exhibit 5.1 to this Registration Statement)

     23.2**   Consent  of  Ballard  Spahr  Andrews &  Ingersoll  (included  in 
              the opinion filed as Exhibit 5.2 to this Registration Statement)

     23.3     Consent of PricewaterhouseCoopers LLP

     23.4     Consent of PricewaterhouseCoopers LLP

     24.1**   Powers  of  Attorney  (included  in  the  signature  page  to  
              this Post-Effective Amendment No. 1 to S-4 Registration Statement)
</TABLE>

- ----------

**    Previously Filed




<PAGE>


ITEM 17.  UNDERTAKINGS

      The undersigned Registrant hereby undertakes:

(a)   (1) To file, during any period in which  offers or sales are being made, a
post-effective amendment to this registration statement:

          (i)  To include any  prospectus  required  by section  10(a)(3) of the
               Securities Act of 1933;

          (ii) To reflect in the  prospectus  any facts or events  arising after
               the  effective  date of the  registration  statement (or the most
               recent post-effective  amendment thereof) which,  individually or
               in  the  aggregate,   represent  a  fundamental   change  in  the
               information   set   forth   in   the   registration    statement.
               Notwithstanding the foregoing, any increase or decrease in volume
               of  securities  offered (if the total dollar value of  securities
               offered  would not  exceed  that  which was  registered)  and any
               deviation  from  the low or  high  end of the  estimated  maximum
               offering  range may be reflected in the form of prospectus  filed
               with the Commission pursuant to Rule 424(b) if, in the aggregate,
               the  changes  in  volume  and price  represent  no more than a 20
               percent change in the maximum aggregate  offering price set forth
               in the  "Calculation of Registration  Fee" table in the effective
               registration statement;

          (iii)To include any material  information  with respect to the plan of
               distribution   not  previously   disclosed  in  the  registration
               statement  or any  material  change  to such  information  in the
               registration statement;

           PROVIDED,  HOWEVER,  that paragraphs  (a)(1)(i) and (a)(1)(ii) do not
apply if the  registration  statement is on Form S-3,  Form S-8 or Form F-3, and
the information  required to be included in a post-effective  amendment by those
paragraphs  is  contained  in periodic  reports  filed with or  furnished to the
Commission by the  registrant  pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934 that are  incorporated  by  reference  in the  registration
statement.

     (2) That, for the purpose of determining any liability under the Securities
Act of 1933,  each  such  post-effective  amendment  shall be deemed to be a new
registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

      (3) To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.

     (b) That for purposes of determining any liability under the Securities Act
of 1933, each filing of the Registrant's annual report pursuant to Section 13(a)
or Section 15(d) of the Exchange Act (and, where  applicable,  each filing of an
employee  benefit plan's annual report pursuant to Section 15(d) of the Exchange
Act) that is incorporated by reference in this  Registration  Statement shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

     (c) To deliver or cause to be delivered with the prospectus, to each person
to whom the prospectus is sent or given,  the latest annual report,  to security
holders  that is  incorporated  by  reference in the  prospectus  and  furnished
pursuant to and meeting the  requirements  of Rule 14a-3 or Rule 14c-3 under the
Securities Exchange Act and, where interim financial  information required to be
presented by Article 3 of Regulation S-X is not set forth in the prospectus,  to
deliver,  or cause to be delivered to each person to whom the prospectus is sent
or given,  the latest  quarterly  report that is  specifically  incorporated  by
reference in the prospectus to provide such interim financial information.

(d) Insofar as  indemnification  for liabilities under the Securities Act may be
permitted to  directors,  officers  and  controlling  persons of the  Registrant
pursuant  to the  provisions  described  in Item 15  above,  or  otherwise,  the
Registrant  has been advised that in the opinion of the  Securities and Exchange
Commission  and  indemnification  is against  public  policy as expressed in the
Securities  Act and is  therefore  unenforceable.  In the event  that a claim of
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses  incurred or paid by a director,  officer or  controlling
person  of the  Registrant  in a  successful  defense  of any  action,  suit  or
proceeding)  is  asserted by such  director,  officer or  controlling  person in
connection with the securities being registered,  the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of  appropriate  jurisdiction  the  question  of whether  such
indemnification  by it is against  public policy as expressed in the  Securities
Act and will be governed by the final adjudication of such issue.




<PAGE>


                                  SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements for filing on Form S-3 and has duly caused this  Post-Effective No.
1 Amendment to Form S-4  Registration  Statement on Form S-3 to be signed on its
behalf by the undersigned,  thereunto duly authorized, in the City of Cupertino,
State of California on February 11, 1999.

                               MISSION WEST PROPERTIES, INC.


                               By:   /s/ Carl E. Berg               
                                     Carl E. Berg
                                      Chairman of the Board, Chief Executive
                                      Officer, President, and Chief Financial
                                      Officer


      KNOW ALL  PERSONS BY THESE  PRESENTS,  that each  person  whose  signature
appears below constitutes and appoints Carl E. Berg and Michael J. Anderson,  or
either   of  them,   each   with  the   power  of   substitution,   his  or  her
attorney-in-fact,  to sign any amendments to this Registration  Statement and to
file  the  same,  with  exhibits  thereto  and  other  documents  in  connection
therewith,  with the Securities and Exchange  Commission,  hereby  ratifying and
confirming all that each of said attorney-in-fact, or his or her substitute, may
do or choose to be done by virtue hereof.

      Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  this
registration  statement  has been signed below by the  following  persons in the
capacities indicated, effective February 11, 1999.

SIGNATURE                      TITLE

/s/ Carl E. Berg
__________________________     Chairman of the Board, Chief Executive Officer,
Carl E. Berg                   President, Chief Financial Officer, and Director

/s/ Michael J. Anderson
__________________________     Vice President, Chief Operating Officer, and
Michael J. Anderson            Director

/s/ Marianne K. Aguiar
__________________________     Vice President of Finance and Controller
Marianne K. Aguiar

/s/ John Bolger
__________________________     Director
John Bolger

/s/ William A. Hasler
__________________________     Director
William A. Hasler

/s/ Lawrence B. Helzel
__________________________     Director
Lawrence B. Helzel





<PAGE>


                                 EXHIBIT INDEX

<TABLE>
<CAPTION>

Exhibit No.   Description
- ------------  ------------------------------------------------------------

    <S>       <C>                                                                    
     2.1      Merger Agreement and Plan of Merger between Mission West
              Properties and Mission West Properties, Inc.
                                                                
     3.1**    Articles of Amendment and Restatement of Mission West Properties,
              Inc.

     3.2**    Restated Bylaws of Mission West Properties, Inc.

     5.1**    Opinion  of  Graham  &  James  LLP   regarding  the  validity  of
              the securities   issued   by  the   Company   to  be   exchanged
              in  the Reincorporation Merger

     5.2**    Opinion  of  Ballard  Spahr  Andrews &  Ingersoll  LLP  regarding
              the validity  of  securities  issued  by  Mission   West-Maryland
              in  the Reincorporation Merge

     10.1.1   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P.

     10.1.2   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P. I

     10.1.3   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P. II

     10.1.4   Amended and  Restated  Agreement of Limited  Partnership  of 
              Mission West Properties, L.P. III

     10.2     Exchange Rights Agreement between the Company and the Limited 
              Partners

     10.4.1** Acquisition  Agreement,  dated  as of May  14,  1998,  among  the
              Company, Certain Partnerships and the Berg Group (as defined
              therein)

     10.4.2** Amendment to Acquisition Agreement, dated as of July 1, 1998

     10.6     Pending  Projects   Acquisition   Agreement  among  the  Company,  
              the Operating Partnership and the members of the Berg Group

     10.7     Berg Land Holdings  Option  Agreement  between the Company and 
              certain members of the Berg Group

     10.8     Form of Registration Rights Agreement

     23.1**   Consent  of Graham & James LLP  (included  in the  opinion  filed
              as Exhibit 5.1 to this Registration Statement)

     23.2**   Consent  of  Ballard  Spahr  Andrews &  Ingersoll  (included  in 
              the opinion filed as Exhibit 5.2 to this Registration Statement)

     23.3     Consent of PricewaterhouseCoopers LLP

     23.4     Consent of PricewaterhouseCoopers LLP

     24.1**   Powers  of  Attorney  (included  in  the  signature  page  to  
              this Post-Effective Amendment No. 1 to S-4 Registration Statement)
</TABLE>

- ----------

**    Previously filed




                                MERGER AGREEMENT
                                       AND
                                 PLAN OF MERGER


      This Merger Agreement and Plan of Merger ("Agreement") is made and entered
into  as of  November  18,  1998  by and  between  Mission  West  Properties,  a
California corporation ("Mission West-California" or "Parent"), and Mission West
Properties,  Inc., a Maryland corporation ("Mission West-Maryland" or "Surviving
Corporation"),  (collectively,  with Mission  West-California,  the "Constituent
Corporations").

                                    ARTICLE I
                                   THE MERGER

      1.1 EFFECTIVE TIME OF THE MERGER. Mission West-California shall merge with
and into Mission  West-Maryland  (the "Merger")  pursuant to Section 1110 of the
California  General  Corporation  Law ("CGCL") and Sections 3-101 et seq. of the
Maryland  General  Corporation Law ("MGCL").  The Merger shall become  effective
upon the filing of the  certificate  of  ownership  of Mission  West-California,
which  incorporates this Agreement,  with the Secretary of State of the State of
California  and  acceptance  for  record  of  Articles  of  Merger  by the State
Department of Assessments and Taxation of Maryland ("SDAT") (the "Effective Time
of Merger").

      1.2 MERGER AT THE EFFECTIVE  TIME.  At the  Effective  Time of the Merger,
Mission  West-California  shall be merged into  Mission  West-Maryland,  and the
separate corporate  existence of Mission  West-California  shall cease.  Mission
West-Maryland shall be the Surviving Corporation.

      1.3 EFFECTS OF THE MERGER.  The Merger shall have the effects set forth in
Section  1107 of the  CGCL and  Sections  3-114 of the  MGCL.  As the  Surviving
Corporation in the Merger,  Mission  West-Maryland shall succeed,  without other
transfer, to all the rights and property of Mission West-California and shall be
subject to all of the obligations and liabilities of Mission  West-California in
the same manner as if Mission West-Maryland had incurred them itself.

                                   ARTICLE II
                             APPROVAL OF THE MERGER

      2.1  APPROVAL  BY PARENT.  The Merger  shall be  approved  by the Board of
Directors  of Mission  West-California  in  accordance  with the  provisions  of
Section 1110(a) of the CGCL. The Merger shall be approved by the shareholders of
Mission West-California as provided in Section 1110(c) of the CGCL.

      2.2 APPROVAL BY  SUBSIDIARY.  The Merger shall be approved by the Board of
Directors of Mission  West-Maryland  as provided in Sections  3-105 and 3-106 of
the MGCL.


                                   ARTICLE III
               ARTICLES OF INCORPORATION, BYLAWS AND DIRECTORS AND
                      OFFICERS OF THE SURVIVING CORPORATION

      3.1 ARTICLES OF  INCORPORATION OF SURVIVING  CORPORATION.  The Articles of
Amendment and  Restatement  (the "Charter") of Mission  West-Maryland,  attached
hereto as Exhibit A, in effect  immediately  prior to the Effective  Time of the
Merger,  shall be the Charter of the Surviving  Corporation unless and until the
Charter is amended as provided by applicable law or as provided in such Charter.

      3.2 BYLAWS OF SURVIVING CORPORATION.  The Bylaws of Mission West-Maryland,
attached hereto as Exhibit B, in effect  immediately prior to the Effective Time
of the Merger, shall be the Bylaws of the Surviving Corporation unless and until
amended or repealed as provided by applicable  law, the Charter or Bylaws of the
Surviving Corporation.

      3.3 OFFICERS AND  DIRECTORS  OF  SURVIVING  CORPORATION.  The officers and
directors  of  Mission  West-California  in  office  immediately  prior  to  the
Effective  Time  of the  Merger  shall  be the  officers  and  directors  of the
Surviving  Corporation  unless and until replaced as provided by applicable law,
the Charter or the Bylaws of the Surviving Corporation.

                                   ARTICLE IV
                   EFFECT ON OUTSTANDING STOCK; CAPITALIZATION

      4.1 CAPITALIZATION. As of the date hereof, the authorized capital stock of
Mission  West-California  consists of 200,000,000 shares of Common Stock, no par
value, of which 100 shares are currently issued and outstanding,  and 20,000,000
shares of Preferred  Stock,  no par value,  none of which has been designated as
any series and none of which are issued and outstanding.  As of the date hereof,
the authorized stock of Mission West-Maryland  consists of 200,000,000 shares of
Common  Stock,  $0.001  par value per share,  of which 100 shares are  currently
issued and  outstanding  and 20,000,000  shares of Preferred  Stock,  $0.001 par
value per  share,  none of which has been  designated  as any series and none of
which are issued and outstanding. Mission West-California owns all of the issued
and outstanding shares of Common Stock of Mission West-Maryland.

      4.2 EFFECT ON PARENT STOCK. At the Effective Time of the Merger, by virtue
of  the  Merger  and  without  any  action  on  the  part  of  the   Constituent
Corporations,  each share of the issued and outstanding  Common Stock of Mission
West-California shall be converted into one share of the Common Stock of Mission
West-Maryland.

      4.3 EFFECT ON PARENT STOCK  OPTIONS.  At the Effective Time of the Merger,
by virtue of the Merger and  without  any action on the part of the  Constituent
Corporations,  the 5,500,000  shares of Common Stock reserved for issuance under
the Mission West-California 1997 Stock Option Plan shall become shares of Common
Stock of Mission  West-Maryland  reserved  for  issuance  under  such Plan,  and
options to purchase  605,000  shares of Common Stock of Mission  West-California
which  have  been  granted  and  are  outstanding   under  such  Plan  shall  be
exchangeable  for  options  to  purchase  the same  number of shares of  Mission
West-Maryland Common Stock at the same exercise price per share.

      4.4 EFFECT ON STOCK OF SUBSIDIARY. At the Effective Time of the Merger, by
virtue of the  Merger  and  without  any  action on the part of the  Constituent
Corporations,  all of the shares of Common Stock of Mission West-Maryland issued
and  outstanding  immediately  before this Effective Time of the Merger shall be
canceled.  No  securities,  cash, or other  property  shall be issued to Mission
West-California  as the  holder  of all of the  outstanding  shares  of  Mission
West-Maryland Common Stock.

                                    ARTICLE V
                               GENERAL PROVISIONS

      5.1  GOVERNING  LAW. This  Agreement  shall be governed by and effected in
accordance with the laws of the State of California.

      5.2 ENTIRE AGREEMENT.  This Agreement  constitutes the entire agreement of
the  parties   with  respect  to  the  Merger  and   supersedes   all  prior  or
contemporaneous agreements.

      IN WITNESS  WHEREOF,  the parties hereto have duly executed this Agreement
as of the date first written above.


                               MISSION WEST PROPERTIES,
                               a California corporation

                                     /s/ Carl E. Berg 
                               By:________________________________
                                    Carl E. Berg, President
                                    and Chief Executive Officer

                                    /s/ Bradley A. Perkins
                               By:________________________________
                                    Bradley A. Perkins, Secretary



                               MISSION WEST PROPERTIES, INC.
                               a Maryland corporation
                       
                                     /s/ Carl E. Berg
                               By:___________________________(SEAL)

                                    Carl E. Berg, President
                                    and Chief Executive Officer

                                        /s/ Bradley A. Perkins
                               Attest:______________________________
                                    Bradley A. Perkins, Secretary






- --------------------------------------------------------------------------------













                              AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                          MISSION WEST PROPERTIES, L.P.









                                  JULY 1, 1998

- --------------------------------------------------------------------------------

<PAGE>
<TABLE>
<CAPTION>



                                TABLE OF CONTENTS

                                                                       

<S>                                                              <C>
ARTICLE 1. Defined Terms..........................................2

  1.1 "Act".......................................................2
  1.2 "Acquisition Agreement".....................................2
  1.3 "Additional Limited Partner"................................2
  1.4 "Adjusted Capital Account Deficit"..........................2
  1.5 "Adjusted Contribution".....................................2
  1.6 "Affiliate".................................................3
  1.7 "Agreement".................................................3
  1.8 "Articles of Incorporation".................................3
  1.9 "Assignee"..................................................3
  1.10 "Available Cash"...........................................3
  1.11 "Berg Acquisition".........................................3
  1.12 "Berg Group"...............................................3
  1.13 "Berg Land Holdings".......................................4
  1.14 "Capital Account"..........................................4
  1.15 "Capital Contribution".....................................5
  1.16 "Capital Event"............................................5
  1.17 "Certificate"..............................................5
  1.18 "Change of Control Transaction"............................5
  1.19 "Charter"..................................................5
  1.20 "Code".....................................................5
  1.21 "Common Stock".............................................5
  1.22 "Common Stock Price".......................................6
  1.23 "Company"..................................................6
  1.24 "Consent"..................................................6
  1.25 "Depreciation".............................................6
  1.26 "Dividend Reinvestment Plan"...............................6
  1.27 "Effective Date"...........................................6
  1.28 "Employee Benefit Plan"....................................6
  1.29 "Entity"...................................................7
  1.30 "Equity Security"..........................................7
  1.31 "ERISA"....................................................7
  1.32 "Exchange Act".............................................7
  1.33 "Exchange Factor"..........................................7
  1.34 "Exchange Right"...........................................7
  1.35 "Exchange Rights Agreement"................................7
  1.36 "GAAP".....................................................7
  1.37 "General Partner"..........................................7
  1.38 "General Partner Interest".................................7
  1.39 "Gross Asset Value"........................................7
  1.40 "Immediate Family".........................................8
  1.41 "Incapacity" or "Incapacitated"............................8
  1.42 "Indemnitee"...............................................9
  1.43 "Initial Contributed Property".............................9
<PAGE>

  1.44 "Lien".....................................................9
  1.45 "Limited Partner".........................................10
  1.46 "Limited Partner Interest"................................10
  1.47 "Liquidating Event".......................................10
  1.48 "Liquidator"..............................................10
  1.49 "L.P. Unit"...............................................10
  1.50 "L.P. Unit Majority"......................................10
  1.51 "Net Income" or "Net Loss"................................10
  1.52 "New Equity Financing Right"..............................11
  1.53 "Nonrecourse Deductions"..................................11
  1.54 "Nonrecourse Liabilities".................................11
  1.55 "Operating Partnership"...................................11
  1.56 "Partner".................................................11
  1.57 "Partner Minimum Gain"....................................11
  1.58 "Partner Nonrecourse Debt"................................11
  1.59 "Partner Nonrecourse Deductions"..........................11
  1.60 "Partnership".............................................12
  1.61 "Partnership Interest"....................................12
  1.62 "Partnership Minimum Gain"................................12
  1.63 "Partnership Record Date".................................12
  1.64 "Partnership Year"........................................12
  1.65 "Pending Development Projects"............................12
  1.66 "Partnership Interest"....................................12
  1.67 "Permitted Partners"......................................12
  1.68 "Permitted Transferee"....................................12
  1.69 "Person"..................................................12
  1.70 "Precontribution Gain"....................................12
  1.71 "Put Rights"..............................................12
  1.72 "Protective Provisions Expiration Date"...................13
  1.73 "Quarter".................................................13
  1.74 "Regulations".............................................13
  1.75 "REIT"....................................................13
  1.76 "REIT Requirements".......................................13
  1.77 "Restricted Partner"......................................13
  1.78 "SEC".....................................................13
  1.79 "Securities Act"..........................................13
  1.80 "Stock Option Plan".......................................13
  1.81 "Subsidiary"..............................................13
  1.82 "Substituted Limited Partner".............................13
  1.83 "Tax Items"...............................................13
  1.84 "Terminating Capital Transaction".........................14
  1.85 "Total Market Capitalization".............................14
  1.86 "Transfer"................................................14
  1.87 "Unit"....................................................14
<PAGE>

  1.88 "United States Person"....................................14
  1.89 "Voting Securities".......................................14

ARTICLE 2. Organizational Matters................................14

  2.1 Continuation...............................................14
  2.2 Name.......................................................14
  2.3 Registered Office and Agent; Principal Office..............15
  2.4 Power of Attorney..........................................15
  2.5 Term.......................................................16

ARTICLE 3. Purpose...............................................16

  3.1 Purpose and Business.......................................16
  3.2 Powers.....................................................17

ARTICLE 4. Capital Contributions.................................17

  4.1 Capital Contributions of the Partners......................17
  4.2 Additional Funds; Restrictions on Company..................17
  4.3 Issuance of Additional Partnership Interests; Admission of 
      Additional Limited Partners................................19
  4.4 Repurchase of Company Equity Securities....................19
  4.5 No Third Party Beneficiary.................................20
  4.6 No Interest; No Return.....................................20

ARTICLE 5. Distributions.........................................20

  5.1 Regular Distributions......................................20
  5.2 Qualification as a REIT....................................20
  5.3 Withholding................................................21
  5.4 Additional Partnership Interests...........................21
  5.5 Distributions Upon Liquidation.............................21

ARTICLE 6. Allocations...........................................21

ARTICLE 7. Management and Operation of Business..................21

  7.1 Management.................................................21
  7.2 Certificate of Limited Partnership.........................22
  7.3 Reimbursement of the General Partner and the Company.......23
  7.4 Outside Activities of the General Partner..................23
  7.5 Contracts with Affiliates..................................23
  7.6 Indemnification............................................24
<PAGE>

  7.7 Liability of the General Partner...........................26
  7.8 Limited Partners' Right to Bring Derivative Lawsuits.......27
  7.9 Other Matters Concerning the General Partner...............27
  7.10 Title to Partnership Assets...............................27
  7.11 Reliance by Third Parties.................................28

ARTICLE 8. Rights and Obligations of Limited Partners............28

  8.1 Limitation of Liability....................................28
  8.2 Management of Business.....................................28
  8.3 Outside Activities of Limited Partners.....................29
  8.4 Return of Capital..........................................29
  8.5 Rights of Limited Partners Relating to the Partnership.....29
  8.6 Exchange Rights............................................30
  8.7 Put Rights.................................................30
  8.8 New Equity Financing Rights................................32
  8.9 Matters Requiring L.P. Unit Majority Approval..............32
  8.10 Approval of Certain Taxable Sales.........................33

ARTICLE 9. Books, Records, Accounting and Reports................33

  9.1 Records and Accounting.....................................33
  9.2 Fiscal Year................................................34

ARTICLE 10. Tax Matters..........................................34

  10.1 Preparation of Tax Returns................................34
  10.2 Tax Elections.............................................34
  10.3 Tax Matters Partner.......................................34
  10.4 Organizational Expenses...................................36
  10.5 Withholding...............................................36

ARTICLE 11. Transfers and Withdrawals............................37

  11.1 Transfer..................................................37
  11.2 Transfer of the Company's Partnership Interests...........37
  11.3 Limited Partners' Rights to Transfer......................37
  11.4 Substituted Limited Partners..............................40
  11.5 Assignees.................................................40
  11.6 Effect of Prohibited Transfer.............................41
  11.7 General Provisions........................................41

ARTICLE 12. Admission of Partners................................41
<PAGE>

  12.1 Admission of Successor General Partner....................41
  12.2 Admission of Additional and Substituted Limited Partners..42
  12.3 Amendment of Agreement and Certificate of Limited.........43
  Partnership.

ARTICLE 13. Dissolution, Liquidation and Termination.............43

  13.1 Dissolution...............................................43
  13.2 Winding Up................................................44
  13.3 Obligation to Contribute Deficit..........................45
  13.4 Rights of Limited Partner.................................45
  13.5 Notice of Dissolution.....................................46
  13.6 Termination of Partnership and Cancellation of Certif-....46
       icate of Limited Partnership
  13.7 Reasonable Time for Winding-Up............................46
  13.8 Waiver of Partition.......................................46
  13.9 Deemed Distribution and Recontribution....................46

ARTICLE 14. Amendment of Partnership Agreement; Meetings.........47

  14.1 Amendments................................................47
  14.2 Meetings of the Partners..................................48

Article 15. General Provisions...................................49

  15.1 Addresses and Notices.....................................49
  15.2 Titles and Captions.......................................49
  15.3 Pronouns and Plurals......................................49
  15.4 Further Action............................................49
  15.5 Binding Effect............................................50
  15.6 Creditors.................................................50
  15.7 Waiver....................................................50
  15.8 Counterparts..............................................50
  15.9 Applicable Law............................................50
  15.10 Invalidity of Provisions.................................50
  15.11 Entire Agreement.........................................50
  15.12 Guaranty by the Company..................................50

</TABLE>
<PAGE>



                              AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                          MISSION WEST PROPERTIES, L.P.



      This AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP OF MISSION WEST
PROPERTIES,  L.P. (this "Agreement"),  dated as of July 1, 1998, is entered into
by and among Mission West Properties, a California corporation (the "Company" or
the "General  Partner")  and the parties whose names are set forth on Appendix I
attached hereto (as it may be amended from time to time).

      WHEREAS, the Partnership was organized initially as Berg Properties,  L.P.
and  became a  limited  partnership  pursuant  to the  Revised  Uniform  Limited
Partnership  Act of the State of  Delaware  by filing a  certificate  of limited
partnership  with the  Secretary  of State of the State of  Delaware on July 11,
1995;

      WHEREAS,  since its  organization as a Delaware limited  partnership,  the
Partnership  has been operated and managed by Berg & Berg  Enterprises,  Inc., a
California  corporation ("BBE"), as sole general partner,  pursuant to the terms
of the Agreement of Limited  Partnership  of Berg  Properties,  L.P. (the "Prior
Agreement");

      WHEREAS,  on December  22,  1997,  the  Partnership  filed an amendment of
certificate of limited  partnership  with the Secretary of State of the State of
Delaware changing the Partnership's name to Mission West Properties, L.P.;

      WHEREAS,  pursuant to the terms of a Acquisition Agreement dated as of May
14,  1998,  as amended  as of July 1, 1998 (the  "Acquisition  Agreement"),  the
Company  has  agreed  to  acquire  a  10.91%  general  partner  interest  in the
Partnership and to become the sole general  partner in the Partnership  upon the
satisfaction of certain conditions set forth in the Acquisition Agreement, which
now have been satisfied or waived by the parties thereto;

      WHEREAS,  BBE and all of the limited  partners in the Partnership  wish to
admit the  Company as a general  partner,  to amend the  certificate  of limited
partnership of the  Partnership to reflect the Company's  admission as a general
partner, and to amend and restate the Prior Agreement as provided herein; and

      WHEREAS,   upon  the  filing  of  the  certificate  of  amendment  of  the
certificate  of limited  partnership  of the  Partnership  with the Secretary of
State of the State of 

<PAGE>

Delaware,  BBE  intends  to  resign as a general  partner  and  become a limited
partner in the Partnership pursuant to the terms of this Agreement.

      NOW THEREFORE,  in consideration of the mutual covenants herein contained,
and other valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties do hereby agree as follows:

ARTICLE 1. DEFINED TERMS.

      The  following  definitions  shall be for all purposes,  unless  otherwise
clearly  indicated to the contrary,  applied to the following terms used in this
Agreement.

      1.1 "ACT" the Delaware Revised Uniform Limited  Partnership Act, as it may
be amended from time to time, and any successor to such statute.

      1.2 "ACQUISITION  AGREEMENT" means the agreement dated as of May 14, 1998,
as amended as of July 1, 1998,  among the  Partnership,  the other  partnerships
comprising  the  Operating  Partnership,  all of the partners  therein,  and the
Company  concerning  the  acquisition  of  the  Berg  Properties,  the  Acquired
Properties and the Pending  Development  Projects by the Operating  Partnership,
the Company's  investment in and admission to the Operating  Partnership as sole
general  partner,  and the rights and  options of the  limited  partners  in the
Operating  Partnership  to tender L.P.  Units or acquire  shares of Common Stock
under certain circumstances.

      1.3  "ADDITIONAL   LIMITED   PARTNER"  means  a  Person  admitted  to  the
Partnership as a Limited Partner pursuant to Section 4.3 hereof and who is shown
as such on the books and records of the Partnership.

      1.4 "ADJUSTED  CAPITAL ACCOUNT DEFICIT" means with respect to any Partner,
the negative balance, if any, in such Partner's Capital Account as of the end of
any  relevant  fiscal year,  determined  after  giving  effect to the  following
adjustments:

           (a) credit to such  Capital  Account  any  portion  of such  negative
      balance  which such  Partner (i) is treated as obligated to restore to the
      Partnership pursuant to the provisions of Section  1.704-1(b)(2)(ii)(c) of
      the  Regulations,  or (ii) is deemed to be  obligated  to  restore  to the
      Partnership   pursuant   to  the   penultimate   sentences   of   Sections
      1.704-2(g)(1) and 1.704-2(i)(5) of the Regulations; and

           (b) debit to such  Capital  Account the items  described  in Sections
      1.704-1(b)(2)(ii)(d)(4), (5) and (6) of the Regulations.

      1.5 "ADJUSTED CONTRIBUTION" means the Capital Contributions of any Partner
reduced by the total distributions to such Partner from Capital Events occurring
subsequent to the Closing Date under the Acquisition Agreement.  For purposes of
this Agreement,  the initial Capital  Contribution of the Company shall be equal
to [$35,200,000]  and the initial Adjusted  Contribution of each Limited Partner
shall be

                                      -2-
<PAGE>

equal  to  the  value  of  the  Limited  Partner's  interest  in  the  Operating
Partnership as set forth in Appendix I of the Acquisition Agreement.

      1.6  "AFFILIATE"  means,  (a) with respect to any individual  Person,  any
member of the  Immediate  Family of such Person or a trust  established  for the
benefit of such  member,  or (b) with respect to any Entity,  any Person  which,
directly  or  indirectly  through  one  or  more  intermediaries,  controls,  is
controlled by, or is under common control with, any such Entity.

      1.7  "AGREEMENT"  means this  Amended and  Restated  Agreement  of Limited
Partnership,  as originally executed and as amended,  modified,  supplemented or
restated from time to time, as the context requires.

      1.8 "ARTICLES OF INCORPORATION" means the Articles of Incorporation of the
Company,  as  amended  and  restated  from  time to  time,  or the  articles  of
incorporation,  certificate  of  incorporation,  operating  agreement  of  other
Charter  instrument of any  corporation  or other entity which is a successor to
the Company by merger or consolidation.

      1.9  "ASSIGNEE"  means a Person to whom one or more L.P.  Units  have been
transferred in a manner permitted under this Agreement, but who has not become a
Substituted Limited Partner, and who has the rights set forth in Section 11.5.

      1.10  "AVAILABLE  CASH"  means the  Partnership's  share of the  Operating
Partnership's  Available  Cash (as defined in the  Acquisition  Agreement)  with
respect to the applicable  period of measurement  (i.e., any period beginning on
the first day of the fiscal year, quarter or other period commencing immediately
after the last day of the fiscal year,  quarter or other  applicable  period for
purposes of the prior calculation of Available Cash for or with respect to which
a  distribution  has been made,  and ending on the last day of the fiscal  year,
quarter  or  other  applicable  period  immediately  preceding  the  date of the
calculation).  Notwithstanding  the foregoing,  Available Cash shall not include
any cash  received or  reductions  in  reserves,  nor shall the  calculation  of
Available Cash take into account any disbursements made or reserves established,
after commencement of the dissolution and liquidation of the Partnership.

      1.11  "BERG  ACQUISITION"  has the  meaning  set forth in the  Acquisition
Agreement.

      1.12 "BERG GROUP" means Carl E. Berg,  Clyde J. Berg, the members of their
respective  Immediate  Families,  and any Entity which is an Affiliate of either
Carl E. Berg or Clyde J. Berg, excluding the Partnership and the Company.

      1.13 "BERG LAND  HOLDINGS"  means certain land held by members of the Berg
Group which the Operating  Partnership  may acquire under certain  circumstances
pursuant to the terms of the  Acquisition  Agreement  and the related  Berg Land
Holdings

                                      -3-
<PAGE>

Option  Agreement  to be entered into by the parties  thereto  upon  approval of
certain transactions by the Company's shareholders.

      1.14  "CAPITAL  ACCOUNT"  means with respect to any  Partner,  the Capital
Account maintained for such Partner in accordance with the following provisions:

           (a) to each  Partner's  Capital  Account  there shall be credited (i)
      such Partner's  Initial Adjusted  Contribution as of the effective date of
      this Agreement (ii) such Partner's Capital Contributions subsequent to the
      Effective Date of this Agreement,  (iii) such Partner's distributive share
      of Net  Income  and any items in the  nature  of income or gain  which are
      specially  allocated  to such  Partner  pursuant  to  Sections  1 and 2 of
      Appendix II and (iv) the amount of any Partnership  liabilities assumed by
      such  Partner  or which  are  secured  by any  asset  distributed  to such
      Partner;

           (b) to each Partner's  Capital Account there shall be debited (i) the
      amount of cash and the Gross Asset Value of any  Property  distributed  to
      such  Partner  pursuant  to any  provision  of this  Agreement,  (ii) such
      Partner's  distributive share of Net Losses and any items in the nature of
      expenses or losses which are specially  allocated to such Partner pursuant
      to  Sections  1  and 2 of  Appendix  II,  and  (iii)  the  amount  of  any
      liabilities  of such  Partner  assumed  by the  Partnership  or which  are
      secured by any asset contributed by such Partner to the Partnership to the
      extent not assumed by the Partner; and

           (c) in the  event  all or a  portion  of a  Partnership  Interest  is
      transferred in accordance with the terms of this Agreement, the transferee
      shall  succeed to the Capital  Account of the  transferor to the extent it
      relates to the transferred Partnership Interest.

The foregoing  provisions and the other provisions of this Agreement relating to
the  maintenance  of Capital  Accounts  are  intended  to comply  with  Sections
1.704-1(b) and 1.704-2 of the Regulations,  and shall be interpreted and applied
in a manner consistent with such  Regulations.  In the event the General Partner
shall reasonably  determine that it is prudent to modify the manner in which the
Capital  Accounts,  or  any  debits  or  credits  thereto  (including,   without
limitation,  debits or credits  relating  to  liabilities  which are  secured by
contributed or distributed  assets or which are assumed by the Partnership,  the
General  Partner or any Limited  Partner)  are  computed in order to comply with
such Regulations, the General Partner may make such modification;  provided that
it does not have an adverse effect on the amounts  distributable  to any Partner
pursuant to Article 13 hereof upon the dissolution of the Partnership.

      1.15 "CAPITAL  CONTRIBUTION" means, with respect to any Partner, any cash,
cash  equivalents  or the Gross  Asset  Value of  property  which  such  Partner
contributes or is deemed to contribute to the Partnership  pursuant to Article 4
hereof.

      1.16 "CAPITAL EVENT" means any Partnership transaction not in the ordinary
course of its  business,  including,  without  limitation,  distribution  to the
Partners  in  excess

                                      -4-
<PAGE>

of distributive shares of income,  principal payments,  prepayments,  prepayment
penalties,  sales,  exchanges,  foreclosures  or other  dispositions of Property
owned by the Partnership, recoveries of damage awards and insurance proceeds not
used to rebuild (other than the receipt of  contributions  to the capital of the
Partnership and business or rental  interruption  insurance proceeds not used to
rebuild).

      1.17 "CERTIFICATE" means the Certificate of Limited  Partnership  relating
to the Partnership to be filed in the office of the Delaware Secretary of State,
as amended from time to time in accordance with the terms hereof and the Act.

      1.18 "CHANGE OF CONTROL  TRANSACTION"  shall mean (A) any  transaction  or
series of transactions  occurring after the Effective Date, in which all Limited
Partners in the Operating  Partnership  are legally  entitled to participate and
pursuant to which L.P. Units representing more than 50% of the total outstanding
L.P. Units of the Operating Partnership are purchased by a Person not controlled
by, in control of or under common control with the Company, any Affiliate of the
Company or any Affiliate of a Limited  Partner,  (B) the merger or consolidation
of the Partnership  with another entity (other than a merger or consolidation in
which the holders of L.P. Units of the Partnership immediately before the merger
or  consolidation  own  immediately  after the merger or  consolidation,  Voting
Securities  of the  surviving  or  acquiring  Entity  or a parent  party of such
surviving or acquiring  Entity,  possessing more than 50% of the voting power of
the surviving or acquiring  Entity or parent party) resulting in the exchange of
the  outstanding  L.P. Units of the  Partnership  for cash,  securities or other
property, or (C) any merger, sale, lease, license, exchange or other disposition
(whether in one  transaction or a series of related  transactions)  of more than
50% of the assets of the Partnership.

      1.19  "CHARTER"  has the  meaning  set forth in Rule 405 of  Regulation  C
promulgated by the SEC under the Securities Act ("Rule 405").

      1.20 "CODE"  means the Internal  Revenue  Code of 1986,  as amended and in
effect  from  time  to  time,  as  interpreted  by  the  applicable  regulations
thereunder.  Any reference  herein to a specific section or sections of the Code
shall be deemed to include a reference to any corresponding  provision of future
law.

      1.21  "COMMON  STOCK"  means a share of Common Stock of the Company or any
shares of Voting  Securities  into which the Common Stock may be reclassified or
converted  or  for  which  shares  of  Common  Stock  may  be  exchanged  in any
transaction  made  applicable  or  available to all holders of Common Stock as a
class.

      1.22 "COMMON  STOCK  PRICE"  means with respect to a particular  valuation
event identified under this Agreement, the last reported sales price regular way
on such date or, in case no such  reported  sale takes  place on such date,  the
average of the reported  closing bid and asked prices  regular way on such date,
in either case on the American Stock Exchange,  the New York Stock Exchange,  or
if the  Common  Stock is not then  listed or  admitted  to  trading  on any such
exchange,  the Nasdaq or any comparable system on which the Common Stock is then
listed or  admitted  to trading or,

                                      -5-
<PAGE>


if not then listed or admitted to trading on any national  securities  exchange,
the Nasdaq or any  comparable  system for the  10-trading day period ending with
the last day preceding the date of the valuation event.

      1.23 "COMPANY" means Mission West  Properties,  a California  corporation,
and any successor to such corporation.

      1.24  "CONSENT"  means the consent or  approval of a proposed  action by a
Partner given in accordance with Section 14.2 hereof.

      1.25  "DEPRECIATION"  means,  with respect to any asset of the Partnership
for any fiscal year or other period, the depreciation,  depletion,  amortization
or other cost recovery  deduction,  as the case may be, allowed or allowable for
federal  income tax  purposes  in respect of such asset for such  fiscal year or
other period;  provided,  however,  that except as otherwise provided in Section
1.704-2 of the  Regulations,  if there is a  difference  between the Gross Asset
Value  (including the Gross Asset Value, as increased  pursuant to paragraph (d)
of the definition of Gross Asset Value) and the adjusted tax basis of such asset
at the  beginning  of such fiscal year or other  period,  Depreciation  for such
asset shall be an amount that bears the same ratio to the beginning  Gross Asset
Value  of  such  asset  as  the  federal  income  tax  depreciation,  depletion,
amortization  or other cost  recovery  deduction  for such  fiscal year or other
period  bears to the  beginning  adjusted  tax  basis of such  asset;  provided,
further, that if the federal income tax depreciation, depletion, amortization or
other  cost  recovery  deduction  for such asset for such  fiscal  year or other
period is zero, Depreciation of such asset shall be determined with reference to
the  beginning  Gross  Asset  Value of such asset  using any  reasonable  method
selected by the General Partner.

      1.26 "DIVIDEND REINVESTMENT PLAN" has the meaning set forth in Rule 405.

      1.27 "EFFECTIVE DATE" means the date of closing of the Berg Acquisition.

      1.28 "EMPLOYEE BENEFIT PLAN" has the meaning set forth in Rule 405.

      1.29  "ENTITY"  means  any  general   partnership,   limited  partnership,
corporation, joint venture, trust, business trust, real estate investment trust,
limited liability company, cooperative or association.

      1.30 "EQUITY SECURITY" has the meaning set forth in Rule 405.

      1.31 "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time (or any corresponding provisions of succeeding laws).

      1.32 "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.

                                      -6-
<PAGE>


      1.33  "EXCHANGE  FACTOR" has the meaning set forth in the Exchange  Rights
Agreement,  and is equal to the number of L.P. Units  exchangeable for one share
of Common Stock, from time to time, under the Exchange Rights Agreement.

      1.34  "EXCHANGE  RIGHT" has the meaning set forth in the  Exchange  Rights
Agreement.

      1.35 "EXCHANGE RIGHTS AGREEMENT" means Exchange Rights Agreement among the
Company,  and each of the limited  partners of the  partnerships  comprising the
Operating Partnership.

      1.36 "GAAP" means United States generally accepted accounting  principles,
as in effect from time to time.

      1.37 "GENERAL  PARTNER" means the general partner of the  Partnership,  if
there is more than one general partner, all such general partners.

      1.38 "GENERAL PARTNER  INTEREST" means a Partnership  Interest held by the
General Partner,  in its capacity as general partner. A General Partner Interest
may be expressed as a number of Units,  each of which shall  represent  the same
Percentage Interest in the Partnership as one L.P. Unit.

      1.39  "GROSS  ASSET  VALUE"  means,  with  respect  to  any  asset  of the
Partnership, such asset's adjusted basis for federal income tax purposes, except
as follows:

           (a) the  initial  Gross  Asset  Value of any asset  contributed  by a
      Partner to the  Partnership  shall be the gross fair market  value of such
      asset,   without   reduction  for   liabilities,   as  determined  by  the
      contributing  Partner  and the  Partnership  on the  date of  contribution
      thereof;

           (b) if the General Partner  reasonably  determines that an adjustment
      is necessary or appropriate to reflect the relative economic  interests of
      the Partners,  the Gross Asset Values of all  Partnership  assets shall be
      adjusted in accordance with Sections  1.704-1(b)(2)(iv)(f)  and (g) of the
      Regulations to equal their  respective  gross fair market values,  without
      reduction  for  liabilities,  as  reasonably  determined  by  the  General
      Partner, as of the following times:

                (1) a Capital  Contribution  (other  than a de  minimis  Capital
           Contribution)  to the  Partnership  by a new or  existing  Partner as
           consideration for a Partnership Interest; or

                (2) the  distribution  by the  Partnership  to a Partner of more
           than a de minimis amount of Partnership  assets as consideration  for
           the repurchase of a Partnership Interest; or

                                      -7-
<PAGE>

                (3) the  liquidation  of the  Partnership  within the meaning of
           Section 1.704-1(b)(2)(ii)(g) of the Regulations;

           (c) the Gross Asset Values of Partnership  assets  distributed to any
      Partner  shall be the gross  fair  market  values of such  assets  (taking
      Section  7701(g)  of  the  Code  into  account)   without   reduction  for
      liabilities,  as reasonably  determined  by the General  Partner as of the
      date of distribution; and

           (d) the Gross Asset Values of  Partnership  assets shall be increased
      (or  decreased) to reflect any  adjustments  to the adjusted basis of such
      assets  pursuant to Sections 734(b) or 743(b) of the Code, but only to the
      extent that such adjustments are taken into account in determining Capital
      Accounts pursuant to Section  1.704-1(b)(2)(iv)(m)  of the Regulations (as
      set forth in Appendix  II);  provided,  however,  that Gross Asset  Values
      shall not be adjusted  pursuant to this  paragraph  (d) to the extent that
      the General Partner reasonably  determines that an adjustment  pursuant to
      paragraph  (b) above is  necessary or  appropriate  in  connection  with a
      transaction that would otherwise result in an adjustment  pursuant to this
      paragraph (d).

      At all times,  Gross Asset  Values  shall be adjusted by any  Depreciation
taken into  account  with  respect to the  Partnership's  assets for purposes of
computing Net Income and Net Loss.

      1.40 "IMMEDIATE  FAMILY" means, with respect to any Person,  such Person's
spouse, parents,  parents-in-law,  children, nephews, nieces, brothers, sisters,
brothers-in-law,  sisters-in-law, stepchildren, sons-in-law and daughters-in-law
or any trust solely for the benefit of any of the foregoing family members whose
sole beneficiaries include the foregoing family members.

      1.41  "INCAPACITY"  OR  "INCAPACITATED"  means,  (i) as to any  individual
Partner,  death,  total  physical  disability  or entry by a court of  competent
jurisdiction  adjudicating  him  incompetent to manage his person or his estate;
(ii) as to any  corporation  which is a Partner,  the filing of a certificate of
dissolution,  or its  equivalent,  for the  corporation or the revocation of its
charter;  (iii) as to any  partnership  which is a Partner,  the dissolution and
commencement of winding up of the partnership;  (iv) as to any estate which is a
Partner,  the  distribution  by the fiduciary of the estate's entire interest in
the  Partnership;  (v) as to any  trustee  of a trust  which is a  Partner,  the
termination of the trust (but not the substitution of a new trustee); or (vi) as
to any Partner, the bankruptcy of such Partner. For purposes of this definition,
bankruptcy  of a Partner  shall be deemed to have  occurred when (a) the Partner
commences a voluntary  proceeding seeking  liquidation,  reorganization or other
relief under any bankruptcy, insolvency or other similar law now or hereafter in
effect;  (b) the Partner is adjudged  as bankrupt or  insolvent,  or a final and
nonappealable  order for relief under any bankruptcy,  insolvency or similar law
now or hereafter in effect has been entered against the Partner; (c) the Partner
executes  and  delivers a general  assignment  for the benefit of the  Partner's
creditors;  (d) the  Partner  files an answer  or other  pleading  admitting  or
failing to contest the  material  allegations  of a petition  filed  against the
Partner in any proceeding of the nature  described in

                                      -8-
<PAGE>

clause (b) above;  (e) the  Partner  seeks,  consents  to or  acquiesces  in the
appointment  of a trustee,  receiver or liquidator for the Partner or for all or
any substantial  part of the Partner's  properties;  (f) any proceeding  seeking
liquidation, reorganization or other relief of or against such Partner under any
bankruptcy,  insolvency  or other similar law now or hereafter in effect has not
been  dismissed  within  120  days  after  the  commencement  thereof;  (g)  the
appointment without the Partner's consent or acquiescence of a trustee, receiver
or liquidator has not been vacated or stayed within 90 days of such appointment;
or (h) an  appointment  referred  to in clause (g) which has been  stayed is not
vacated within 90 days after the expiration of any such stay.

      1.42  "INDEMNITEE"  means (i) any Person made a party to a  proceeding  by
reason of (A) such Person's status as (1) the General  Partner,  (2) a director,
trustee or officer of the Partnership or the General Partner, or (3) a director,
trustee or officer of any other Entity,  each Person serving in such capacity at
the  request  of the  Partnership  or the  General  Partner,  or (B)  his or its
liabilities,  pursuant to a loan guarantee or otherwise, for any indebtedness of
the  Partnership  or any  Subsidiary  of  the  Partnership  (including,  without
limitation,  any  indebtedness  which the  Partnership  or any Subsidiary of the
Partnership has assumed or taken assets subject to); and (ii) such other Persons
(including  Affiliates of the General Partner or the Partnership) as the General
Partner  may  designate  from  time to time  (whether  before or after the event
giving rise to potential liability), in its sole and absolute discretion.

      1.43 "INITIAL CONTRIBUTED PROPERTY" means the Properties as defined in the
Acquisition Agreement.

      1.44 "LIEN" means,  with respect to any asset of the Partnership,  (i) any
mortgage,  deed of trust,  lien,  pledge,  encumbrance,  charge,  restriction or
security interest in or on such asset, (ii) the interest of a vendor or a lessor
under any conditional sale agreement, capital lease or title retention agreement
relating to such asset and (iii) in the case of securities, any purchase option,
call or similar right of a third party with respect to such securities.

      1.45  "LIMITED  PARTNER"  means any Person  named as a Limited  Partner in
Appendix  I,  as  such  Appendix  may be  amended  from  time  to  time,  or any
Substituted  Limited  Partner or Additional  Limited  Partner,  in such Person's
capacity as a Limited Partner of the Partnership.

      1.46 "LIMITED PARTNER INTEREST" means a Partnership  Interest of a Limited
Partner in the  Partnership  representing a fractional  part of the  Partnership
Interests  of all Partners and includes any and all benefits to which the holder
of such a Partnership  Interest may be entitled,  as provided in this Agreement,
together  with all  obligations  of such  Person  to  comply  with the terms and
provisions of this Agreement.  A Limited Partner  Interest may be expressed as a
number of L.P. Units.

      1.47 "LIQUIDATING EVENT" has the meaning set forth in Section 13.1 hereof.

                                      -9-
<PAGE>

      1.48 "LIQUIDATOR" has the meaning set forth in Section 13.2 hereof.

      1.49 "L.P.  UNIT" means a fractional,  undivided  share of the Partnership
Interests  of all  Partners  issued  pursuant to Sections  4.1, 4.2 and 4.3. The
number of L.P. Units outstanding and the Percentage Interests in the Partnership
represented by such L.P. Units are set forth in Appendix I, as such Appendix may
be amended from time to time.  The ownership of L.P. Units shall be evidenced by
such form of  certificate  for units as the General  Partner adopts from time to
time  unless  the  General  Partner  determines  that  the L.P.  Units  shall be
uncertificated securities.

      1.50 "L.P. UNIT MAJORITY" means the Limited Partners holding the right
to vote, in the aggregate, a majority of the total number of L.P. Units
outstanding in the Operating Partnership.

      1.51 "NET  INCOME"  OR "NET LOSS"  means,  for each  fiscal  year or other
applicable  period, an amount equal to the Partnership's  taxable income or loss
for such year or period as  determined  for federal  income tax  purposes by the
General  Partner,  determined in accordance with Section 703(a) of the Code (for
this purpose, all items of income, gain, loss or deduction required to be stated
separately  pursuant to Section  703(a) of the Code shall be included in taxable
income or loss),  adjusted  as  follows:  (a) by  including  as an item of gross
income any tax-exempt income received by the Partnership and not otherwise taken
into  account  in  computing  Net  Income  or Net  Loss;  (b) by  treating  as a
deductible  expense any  expenditure  of the  Partnership  described  in Section
705(a)(2)(B)  of the  Code  (or  which  is  treated  as a  Section  705(a)(2)(B)
expenditure pursuant to Section 1.704-1(b)(2)(iv)(i) of the Regulations) and not
otherwise  taken into  account in  computing  Net Income or Net Loss,  including
amounts paid or incurred to organize the Partnership (unless an election is made
pursuant to Section  709(b) of the Code) or to promote the sale of  interests in
the Partnership and by treating deductions for any losses incurred in connection
with the sale or exchange of Partnership property disallowed pursuant to Section
267(a)(1)  or  707(b)  of  the  Code  as   expenditures   described  in  Section
705(a)(2)(B)  of the Code;  (c) by taking into account  Depreciation  in lieu of
depreciation,  depletion,  amortization and other cost recovery deductions taken
into account in computing  taxable income or loss; (d) by computing gain or loss
resulting from any  disposition  of  Partnership  property with respect to which
gain or loss is recognized  for federal  income tax purposes by reference to the
Gross Asset Value of such  property  rather than its adjusted tax basis;  (e) in
the event of an  adjustment  of the Gross Asset Value of any  Partnership  asset
which requires that the Capital Accounts of the Partnership be adjusted pursuant
to Sections 1.704-1(b)(2)(iv)(e), (f) and (g) of the Regulations, by taking into
account  the  amount  of  such  adjustment  as if  such  adjustment  represented
additional Net Income or Net Loss pursuant to Appendix II; and (f) by not taking
into account in computing Net Income or Net Loss items  separately  allocated to
the Partners pursuant to Sections 1 and 2 of Appendix II.

      1.52 "NEW  EQUITY  FINANCING  RIGHT" has the  meaning set forth in Section
8.8.

                                      -10-
<PAGE>


      1.53  "NONRECOURSE  DEDUCTIONS"  has the meaning set forth in  Regulations
Sections 1.704-2(b)(1) and 1.704-2(c).

      1.54  "NONRECOURSE  LIABILITIES"  has the meaning set forth in Regulations
Section 1.704-2(b)(3).

      1.55 "OPERATING PARTNERSHIP" means, collectively, Mission West
Properties, L.P., Mission West Properties, L.P. I, Mission West Properties,
L.P. II and Mission West Properties, L.P. III.

      1.56  "PARTNER"  means  the  General  Partner  or a Limited  Partner,  and
"Partners" means the General Partner and the Limited Partners collectively.

      1.57 "PARTNER MINIMUM GAIN" means an amount,  with respect to each Partner
Nonrecourse  Debt,  equal to the  Partnership  Minimum Gain that would result if
such  Partner  Nonrecourse  Debt  were  treated  as  a  Nonrecourse   Liability,
determined in accordance with Regulations Section 1.704-2(i)(3).

      1.58 "PARTNER  NONRECOURSE  DEBT" has the meaning set forth in Regulations
Section 1.704-2(b)(4).

      1.59  "PARTNER  NONRECOURSE  DEDUCTIONS"  has the  meaning  set  forth  in
Regulations  Section  1.704-2(i)(2),  and  the  amount  of  Partner  Nonrecourse
Deductions with respect to a Partner  Nonrecourse Debt for a Partnership taxable
year shall be  determined in accordance  with the rules of  Regulations  Section
1.704-2(i)(2).

      1.60  "PARTNERSHIP"  means  the  limited  partnership   governed  by  this
Agreement, and any successor thereto.

      1.61 "PARTNERSHIP INTEREST" means an ownership interest in the Partnership
representing an Adjusted Contribution by either a Limited Partner or the General
Partner  and  includes  any and all  benefits  to  which  the  holder  of such a
Partnership  Interest  may be entitled as provided in this  Agreement,  together
with all  obligations  of such Person to comply with the terms and provisions of
this  Agreement.  A  Partnership  Interest  may be expressed as a number of L.P.
Units.

      1.62  "PARTNERSHIP  MINIMUM GAIN" has the meaning set forth in Regulations
Section  1.704-2(b)(2),  and the amount of Partnership  Minimum Gain, as well as
any net increase or decrease in a Partnership  Minimum  Gain,  for a Partnership
taxable year shall be  determined in  accordance  with the rules of  Regulations
Section 1.704-2(d).

      1.63  "PARTNERSHIP  RECORD DATE" means the record date  established by the
General Partner for the  distribution of Available Cash pursuant to Section 5.1,
which  shall be the same as the record  date  established  by the  Company for a
distribution  to  its  shareholders  of  some  or all of  its  portion  of  such
distribution.

                                      -11-
<PAGE>


      1.64 "PARTNERSHIP YEAR" means the fiscal year of the Partnership, which is
the calendar year, as set forth in Section 9.2.

      1.65  "PENDING  DEVELOPMENT  PROJECTS"  means three Berg  Group-owned  R&D
Property  development  projects  which the Operating  Partnership  has agreed to
acquire upon their completion pursuant to the terms of the Acquisition Agreement
and the related  Pending  Projects  Option  Agreement  to be entered into by the
parties  thereto  upon the  approval of certain  transactions  by the  Company's
shareholders.

      1.66 "PARTNERSHIP INTEREST" means, as to a Partner, the fractional part of
the Partnership Interests owned by such Partner and expressed as a percentage as
specified in Appendix I, as such Appendix may be amended from time to time.

      1.67  "PERMITTED  PARTNERS"  has the meaning set forth in Section  1(b) of
Appendix II.

      1.68  "PERMITTED  TRANSFEREE"  means any  person  to whom  L.P.  Units are
Transferred in accordance with Section 11.3 of this Agreement.

      1.69 "PERSON" means an individual or Entity.

      1.70  "PRECONTRIBUTION  GAIN" has the meaning set forth in Section 3(c) of
Appendix II.

      1.71 "PUT RIGHTS" shall have the meaning provided in Section 8.7.

      1.72 "PROTECTIVE  PROVISIONS  EXPIRATION DATE" means the date on which the
members of the Berg Group own less than 15% of the Common  Stock,  treating  all
Equity  Securities  of the Company and all L.P.  Units owned by such  members as
Common Stock outstanding for this purpose.

      1.73  "PROPERTIES"  has the  meaning  given  such term in the  Acquisition
Agreement.

      1.74  "QUARTER"  means each of the three month periods ending on March 31,
June 30, September 30 and December 31.

      1.75  "REGULATIONS"  means the final,  temporary  or  proposed  Income Tax
Regulations  promulgated under the Code, as such regulations may be amended from
time to time (including corresponding provisions of succeeding regulations).

      1.76 "REIT" means a real estate investment trust as defined in Section 856
of the Code.

      1.77 "REIT REQUIREMENTS"  means all of the requirements  imposed under the
Code on any entity seeking to qualify and remain qualified as a REIT.

                                      -12-
<PAGE>


      1.78  "RESTRICTED  PARTNER"  has the meaning set forth in Section  1(b) of
Appendix II.

      1.79 "SEC" means the U.S. Securities and Exchange Commission.

      1.80 "SECURITIES ACT" means the Securities Act of 1933, as amended.

      1.81 "STOCK  OPTION PLAN" means the  Company's  1997 Stock Option Plan and
any other plan adopted from time to time by the Company pursuant to which shares
of Common  Stock are issued,  or options to acquire  shares of Common  Stock are
granted,  to  consultant,  employees or directors of the Company,  the Operating
Partnership  or their  respective  Affiliates in  consideration  for services or
future services.

      1.82  "SUBSIDIARY"  means,  with respect to any Person,  any  corporation,
partnership  or other  entity of which a majority of (i) the voting power of the
Voting Securities;  or (ii) the outstanding equity interests, is owned, directly
or indirectly, by such Person.

      1.83  "SUBSTITUTED  LIMITED  PARTNER"  means a Person who is admitted as a
Limited Partner to the Partnership pursuant to Section 11.4 hereof.

      1.84 "TAX ITEMS" has the meaning set forth in Appendix II.

      1.85 "TERMINATING CAPITAL TRANSACTION" means any Change of Control
Transaction.

      1.86  "TOTAL  MARKET   CAPITALIZATION"  means  the  market  value  of  the
outstanding  Common  Stock  determined  as if all L.P.  Units  in the  Operating
Partnership had been converted into Common Stock at the Exchange Factor plus the
total debt of the Company and the Operating Partnership.

      1.87 "TRANSFER" as a noun, means any sale, assignment, conveyance, pledge,
hypothecation,  gift,  encumbrance or other  transfer,  and as a verb,  means to
sell, assign, convey, pledge, hypothecate, give, encumber or otherwise transfer.

      1.88 "UNIT" means an equal  undivided  interest in all of the  outstanding
Partnership Interests.

      1.89  "UNITED  STATES  PERSON"  means a  holder  of L.P.  Units  who is an
individual  who is a citizen or resident of the United  States;  a  corporation,
partnership  or other entity  created or organized in, or under the laws of, the
United States or any State;  an estate the income of which from sources  without
the United States is includable in gross income for United States federal income
tax purposes; a trust the primary supervision of which is exercisable by a court
within the United States and having one or more United States  fiduciaries  with
authority to control all  substantial  decisions  of such trust;  and any

                                      -14-
<PAGE>

Person  whose  income  or gain in  respect  of the  L.P.  Units  is  effectively
connected with the conduct of a United States trade or business.

      1.90 "VOTING  SECURITIES"  means any Equity  Security  which  entitles the
holder thereof to vote on all matters  submitted for a vote of equity holders by
the issuer of such Equity Security, including the right to vote for directors in
the case of a corporation.

      Certain  additional  terms  and  phrases  have the  meanings  set forth in
Appendix II.

ARTICLE 2. ORGANIZATIONAL MATTERS.

      2.1  CONTINUATION.  The Partners  hereby agree to continue the Partnership
under and  pursuant  to the Act.  Except  as  expressly  provided  herein to the
contrary,  the rights and obligations of the Partners and the administration and
termination  of the  Partnership  shall be governed by the Act. The  Partnership
Interest of each Partner shall be personal property for all purposes.

      2.2 NAME. The name of the  Partnership  shall be Mission West  Properties,
L.P. [ ]. The  Partnership's  business may be conducted  under any other name or
names deemed advisable by the General Partner, including the name of the General
Partner or any  Affiliate  thereof.  The words  "Limited  Partnership,"  "L.P.,"
"Ltd." or similar words or letters shall be included in the  Partnership's  name
where necessary to comply with the laws of any jurisdiction. The General Partner
in its sole and absolute  discretion  may, upon 5 days' prior written  notice to
the Limited Partners, change the name of the Partnership.

      2.3  REGISTERED  OFFICE AND AGENT;  PRINCIPAL  OFFICE.  The address of the
registered  office of the  Partnership in the State of Delaware and the name and
address of the registered agent for service of process on the Partnership in the
State  of  Delaware  is The  Corporation  Trust  Company,  1029  Orange  Street,
Wilmington,  Delaware 19801.  The principal  office of the Partnership  shall be
10050 Bandley Drive,  Cupertino,  California  95014,  or such other place as the
General  Partner  may from  time to time  designate  by  notice  to the  Limited
Partners.  The  Partnership  may maintain  offices at such other place or places
within or outside the State of Delaware as the General Partner deems advisable.

      2.4  POWER OF ATTORNEY.

      A. Each Limited Partner and each Assignee hereby  constitutes and appoints
the   General   Partner,   any   Liquidator,   and   authorized   officers   and
attorneys-in-fact  of each, and each of those acting  singly,  in each case with
full power of substitution,  as its true and lawful agent and  attorney-in-fact,
with full power and authority in its name, place and stead to:

           (1) execute,  swear to, acknowledge,  deliver, file and record in the
      appropriate  public  offices  (a) all  certificates,  documents  and other
      instruments  (including,   without  limitation,  this  Agreement  and  the
      Certificate and all amendments or  restatements  thereof) that the General
      Partner or the Liquidator deems appropriate or necessary to form,  qualify
      or continue the existence or qualification of the Partnership as a limited
      partnership  (or a partnership in which the Limited  Partners have limited
      liability)  in the State of  Delaware  and in all other  jurisdictions  in
      which the  Partnership  may or plans to conduct  business or own property,
      including,  without  limitation,  any documents  necessary or advisable to
      convey any Contributed  Property to the  Partnership;  (b) all instruments
      that the General  Partner  deems  appropriate  or necessary to reflect any
      amendment,  change,  modification  or  restatement  of this  Agreement  in
      accordance with its terms;  (c) all  conveyances and other  instruments or
      documents that the General Partner or the Liquidator deems  appropriate or
      necessary to reflect the  dissolution  and  liquidation of the Partnership
      pursuant to the terms of this Agreement,  including, without limitation, a
      certificate  of  cancellation;   (d)  all  instruments   relating  to  the
      admission, withdrawal, removal or substitution of any Partner pursuant to,
      or other  events  described  in,  Article  11,  12 or 13,  or the  Capital
      Contribution of any Partner; and (e) all certificates, documents and other
      instruments  relating to the determination of the rights,  preferences and
      privileges of Partnership Interest; and

           (2)  execute,  swear  to,  seal,  acknowledge  and file all  ballots,
      consents,   approvals,   waivers,   certificates  and  other   instruments
      appropriate  or  necessary,  in the sole and  absolute  discretion  of the
      General Partner or any Liquidator,  to make,  evidence,  give,  confirm or
      ratify any vote,  consent,  approval,  agreement  or other action which is
      made or given by the Partners hereunder or is consistent with the terms of
      this agreement or appropriate or necessary,  in the sole discretion of the
      General  Partner or any  Liquidator,  to effectuate the terms or intent of
      this Agreement.

      Nothing  contained  herein shall be construed as  authorizing  the General
Partner or any  Liquidator to amend this  Agreement  except in  accordance  with
Article 14, or as may be otherwise expressly provided for in this Agreement.

      B. The foregoing  power of attorney is hereby  declared to be  irrevocable
and a power coupled with an interest,  in  recognition  of the fact that each of
the  Partners  will be relying  upon the power of the  General  Partner  and any
Liquidator  to act as  contemplated  by this  Agreement  in any  filing or other
action by it on  behalf  of the  Partnership,  and it shall  survive  and not be
affected by the subsequent Incapacity of any Limited Partner or Assignee and the
Transfer of all or any portion of such  Limited  Partner's  or  Assignee's  L.P.
Units  and  shall  extend  to  such  Limited   Partner's  or  Assignee's  heirs,
successors,  assigns and personal representatives.  Each such Limited Partner or
Assignee  hereby  agrees to be bound by any  representation  made by the General
Partner  or any  Liquidator,  acting in good  faith  pursuant  to such  power of
attorney,  and each such Limited  Partner or Assignee  hereby waives any and all
defenses  which may be available to contest,  negate or disaffirm  the action of
the General Partner or any  Liquidator,  taken in good faith under such power of
attorney.  Each  Limited  Partner or Assignee  shall  execute and deliver to the
General Partner or the  

                                      -15-
<PAGE>


Liquidator,  within  15  days  after  receipt  of  the  General  Partner'  s  or
Liquidator's request therefor, such further designation,  powers of attorney and
other instruments as the General Partner or the Liquidator,  as the case may be,
deems   necessary  to  effectuate   this  Agreement  and  the  purposes  of  the
Partnership.

      2.5 TERM.  The term of the  Partnership  shall commence on the date hereof
and shall continue until December 31, 2048,  unless the Partnership is dissolved
sooner pursuant to the provisions of Article 13 or as otherwise provided by law.

ARTICLE 3. PURPOSE.

      3.1 PURPOSE  AND  BUSINESS.  The purpose and nature of the  business to be
conducted by the  Partnership  is to conduct any  business  that may be lawfully
conducted  by a limited  partnership  organized  pursuant to the Act  including,
without limitation,  to engage in the following  activities:  to acquire,  hold,
own, develop,  construct,  improve,  maintain,  operate,  sell, lease, transfer,
encumber,   convey,  exchange,  and  otherwise  dispose  of  or  deal  with  the
Properties,  and the  Pending  Development  Projects;  to  acquire,  hold,  own,
develop, construct, improve, maintain, operate, sell, lease, transfer, encumber,
convey,  exchange,  and  otherwise  dispose  of or deal with  real and  personal
property of all kinds;  to undertake such other  activities as may be necessary,
advisable,  desirable or convenient to the business of the  Partnership;  and to
engage in such other ancillary  activities as shall be necessary or desirable to
effectuate the foregoing purposes.

      3.2 POWERS. The Partnership is empowered to do any and all acts and things
necessary,  appropriate,  proper, advisable, incidental to or convenient for the
furtherance  and  accomplishment  of the  purposes and business for which it has
been formed and for the  protection  and benefit of the  Partnership;  provided,
that the Partnership  shall not take, and shall refrain from taking,  any action
which,  in the  judgment  of the  General  Partner,  in its  sole  and  absolute
discretion, (i) could adversely affect the ability of the Company to continue to
qualify as a REIT; (ii) could subject the Company to any additional  taxes under
Section  857 or Section  4981 of the Code;  or (iii)  could  violate  any law or
regulation  of any  governmental  body or agency  having  jurisdiction  over the
Company or its  securities,  unless  such action (or  inaction)  shall have been
specifically  consented to by the Company,  if not the General Partner,  and the
L.P. Unit Majority.

ARTICLE 4. CAPITAL CONTRIBUTIONS.

      4.1  CAPITAL CONTRIBUTIONS OF THE PARTNERS.

      A. At the time of the execution of this Agreement,  the Partners have made
the Adjusted Contributions, or shall make the Capital Contributions contemplated
by the Acquisition Agreement, as set forth in Appendix I to this Agreement. Each
Limited Partner shall own L.P. Units in the amount set forth for such Partner in
Appendix I and shall have a Percentage  Interest in the Partnership as set forth
in  Appendix  I, which  shall be adjusted in Appendix I from time to time by the
General  Partner  to the  extent

                                      -16-
<PAGE>

necessary to reflect accurately exchanges, additional Capital Contributions, the
issuance of additional  Partnership  Interests,  the exercise of Put Rights with
respect  to L.P.  Units or  similar  events  having an  effect on any  Partner's
Percentage Interest.

      B. The number of Units held by the  General  Partner,  in its  capacity as
general partner,  shall be deemed to be the General Partner Interest.  Except as
provided in Sections 4.2, 10.5 and 13.3,  the Partners  shall have no obligation
to make any additional Capital Contributions.

      4.2  ADDITIONAL FUNDS; RESTRICTIONS ON COMPANY.

      A. The sums of money  required to finance the  business and affairs of the
Partnership shall be derived from the initial Capital  Contributions made to the
Partnership  by the Company as set forth in the  Acquisition  Agreement and from
funds  generated from the operation and business of the  Partnership  including,
without  limitation,  distributions  directly  or  indirectly  received  by  the
Partnership  from Available Cash provided by the Operating  Partnership.  In the
event additional financing is needed from sources other than as set forth in the
preceding sentence for any reason, subject to the provisions of Sections 8.8 and
8.9,  the General  Partner may, in its  discretion,  in such amounts and at such
times as it solely  shall  determine  to be  necessary  or  appropriate,  obtain
additional funds for the Operating  Partnership which shall be allocated to each
of the partnerships  included  therein,  including the Partnership,  pro rata in
proportion  to the ratio of the  number of Units then  outstanding  in each such
Partnership to the total number of L.P. Units then  outstanding in the Operating
Partnership taken as a whole ("Pro Rata Share").  Accordingly,  to the extent of
such Pro Rata Share of the  Partnership and subject to Section 8.9 and any other
limitations  contained  in this  Agreement  or the  Acquisition  Agreement,  the
General Partner may, (i) cause the Partnership to issue  additional  Partnership
Interests and admit additional Limited Partners to the Partnership in accordance
with Section 4.3; (ii) make additional Capital  Contributions to the Partnership
(subject to the  provisions of Section  4.2B);  (iii) cause the  Partnership  to
borrow  money,  enter  into loan  arrangements,  issue debt  securities,  obtain
letters of credit or otherwise  borrow money on a secured or unsecured basis; or
(iv) make loans to the Partnership  (subject to Section 4.2B). In no event shall
the Limited Partners be required to make any additional Capital Contributions or
any loan to, or otherwise  provide any financial  accommodation  for the benefit
of,  the  Partnership  pursuant  to any such  permitted  action  by the  General
Partner,  except  insofar  as a Limited  Partner  has  exercised  its New Equity
Financing Right pursuant to Section 8.8.

      B. Except as agreed  otherwise  at the time by vote or written  consent of
the L.P. Unit Majority:  (i) the Company shall lend to the  Partnership  its Pro
Rata Share of the proceeds of or consideration  received by the Company from all
loans  and  advances  to  the  Company  pursuant  to  any  financial   borrowing
arrangement on the same financial terms and conditions,  including interest rate
and repayment  schedule,  as shall be applicable  with respect to or incurred in
connection  with the issuance of such loans and  advances to the Company  (which
the Partnership may, in turn, lend to any other

                                      -17-
<PAGE>


partnership constituting part of the Operating Partnership); (ii) in the case of
Equity  Securities  senior or junior to the  Common  Stock as to  dividends  and
distributions on liquidation,  which are not convertible into Common Stock as of
the issuance date, the Company shall  contribute to the Partnership the proceeds
of or  consideration  (including any property or other non-cash assets) received
for such  Securities  and the proceeds of, or  consideration  received from, any
subsequent exercise,  exchange or conversion thereof (if applicable),  and shall
receive from the  Partnership,  new Partnership  Interests in the Partnership in
consideration  therefor with the same financial terms and conditions,  including
dividend, dividend priority,  liquidation preference,  conversion and redemption
rights, as are applicable to such Equity Securities; (iii) in the case of Common
Stock,  or other  Equity  Securities  convertible  into  Common  Stock as of the
issuance date,  including,  without limitation,  shares of Common Stock or other
Equity  Securities issued upon exercise of options issued under the Stock Option
Plan or any other  Employee  Benefit  Plan of the  Company,  the  Company  shall
contribute to the  Partnership the proceeds of or  consideration  (including any
property or other non-cash assets) received for such Securities and the proceeds
of, or  consideration  received  from,  any  subsequent  exercise,  exchange  or
conversion  thereof (if  applicable),  and shall receive from the  Partnership a
number of additional Units of General Partner Interest in consideration therefor
equal to the product of (x) the number of shares of Common Stock or other Equity
Securities  issued by the  Company,  multiplied  by (y) the  Exchange  Factor in
effect on the date of such contribution; and (iv) in the case of Common Stock or
other Equity  Securities issued upon the exercise or surrender of rights under a
stock option, warrant, or any other right for which the Company does not receive
proceeds,  and issues  less than the  number of shares of Common  Stock or other
Equity Securities  subject to such option,  warrant or other right to the holder
thereof  retaining the excess of such shares as payment of the purchase price (a
"net exercise"),  or where the Company uses the proceeds  received pursuant to a
Dividend  Reinvestment  Plan to acquire  shares of Common  Stock or other Equity
Securities to be issued to the shareholder  exercising  such right,  the Company
shall  receive  from the  Partnership  a number of  additional  Units of General
Partner  Interest  equal to the actual number of shares of Common Stock or other
Equity  Securities  so  issued to the  shareholder  multiplied  by the  Exchange
Factor.

      4.3 ISSUANCE OF ADDITIONAL PARTNERSHIP INTERESTS;  ADMISSION OF ADDITIONAL
LIMITED  PARTNERS.  In addition  to any  Partnership  Interests  issuable by the
Partnership  pursuant to Section 4.2, and subject to the  provisions of Sections
8.8 and 8.9, the General Partner is authorized to cause the Partnership to issue
additional Partnership Interests (or options therefor) in the form of L.P. Units
or other Partnership Interests senior or junior to the L.P. Units to any Persons
at any time or from  time to time,  for  consideration  per Unit of  Partnership
Interest not less than the Common Stock Price determined at the initial issuance
date divided by the Exchange Factor, and on such other terms and conditions,  as
the General Partner shall establish provided, however, that (i) each partnership
included in the  Operating  Partnership  shall effect its Pro Rata Share of such
issuance,  (ii) such issuance  does not cause the  Partnership  to become,  with
respect to any Employee Benefit Plan subject to Title I of ERISA or Section 4975
of the Code, a "party in interest"  (as defined in Section  3(14) of ERISA) or

                                      -18-
<PAGE>

a "disqualified  person" (as defined in Section 4975(e) of the Code);  and (iii)
such  issuance  does not cause any portion of the assets of the  Partnership  to
constitute assets of any Employee Benefit Plan subject to Section  2510.3-101 of
the  regulations  of the  United  States  Department  of Labor.  Subject  to the
limitations  set forth in the preceding  sentence,  the General Partner may take
such steps as it, in its reasonable  discretion,  deems necessary or appropriate
to admit any Person as a Limited Partner of the Partnership,  including, without
limitation, amending the Certificate,  Appendix I or any other provision of this
Agreement.

      4.4  REPURCHASE  OF COMPANY  EQUITY  SECURITIES.  In the event the Company
shall elect to purchase  from its  shareholders  shares of Common  Stock for the
purpose of delivering  such shares to satisfy an  obligation  under any Dividend
Reinvestment  Plan or Employee  Benefit Plan  adopted by the  Company,  or shall
repurchase  any other  Equity  Securities  of the Company  pursuant to any other
share  repurchase  obligation or arrangement  undertaken by the Company with any
Company shareholder,  including preferred stock redemptions,  the purchase price
paid by the  Company  for such  shares and any other  expenses  incurred  by the
Company in  connection  with such purchase  shall be considered  expenses of the
Partnership  and shall be  reimbursed  to the Company,  subject to the condition
that: (i) if such shares subsequently are to be sold by the Company, the Company
shall pay to the  Partnership  any  proceeds  received  by the  Company for such
shares of Common Stock or other Equity Securities  (provided that an exchange of
shares of Common Stock for L.P. Units pursuant to the Exchange Rights  Agreement
would not be considered a sale for such  purposes);  and (ii) if such shares are
not re-transferred by the Company within 30 days after the purchase thereof, the
General  Partner  shall cause the  Partnership  to cancel the number of Units of
General Partner  Interest held by the Company  determined by multiplying (x) the
quotient obtained by dividing the total amount deemed paid by the Partnership by
the Common Stock Price determined as of the repurchase date, by (y) the Exchange
Factor in effect on the date of such repurchase.

      4.5 NO THIRD PARTY  BENEFICIARY.  No creditor or other third party  having
dealings  with the  Partnership  shall  have the right to  enforce  the right or
obligation  of any Partner to make Capital  Contributions  or loans or to pursue
any other right or remedy hereunder or at law or in equity,  it being understood
and agreed that the provisions of this Agreement shall be solely for the benefit
of,  and may be  enforced  solely by, the  parties  hereto and their  respective
successors and assigns.

      4.6 NO INTEREST;  NO RETURN.  No Partner  shall be entitled to interest on
its  Capital  Contribution  or on such  Partner's  Capital  Account.  Except  as
provided in Section 8.7 or Article 13 of this  Agreement,  or by law, no Partner
shall have any right to demand or receive the return of its Capital Contribution
from the Partnership.

ARTICLE 5. DISTRIBUTIONS.

      5.1 REGULAR  DISTRIBUTIONS.  Except for distributions  pursuant to Section
13.2 in connection with the dissolution and liquidation of the Partnership,  and
subject to the  provisions  of Sections  5.3, 5.4 and 5.5,  the General  Partner
shall cause the  Partnership

                                   -19-
<PAGE>

to distribute,  from time to time as determined by the General  Partner,  but in
any event not less frequently than once each Quarter, the Partnership's Pro Rata
Share of all Available Cash, to the Partners,  in accordance with each Partner's
respective  Percentage  Interest;  provided,  however,  that in no  event  may a
Limited  Partner receive a distribution of Available Cash with respect to a L.P.
Unit, if such Limited Partner is entitled to receive a distribution  out of such
Available  Cash with respect to a share of Common Stock for which such L.P. Unit
has been exchanged.

      5.2  QUALIFICATION  AS A REIT.  The General  Partner  shall be entitled to
cause the Partnership to distribute to the General Partner the Partnership's Pro
Rata Share of Available Cash distributed by the Operating  Partnership to enable
the General Partner to pay shareholder  dividends that will (i) satisfy the REIT
Requirements  for  distributions  to  shareholders,  and (ii) avoid any  federal
income or excise tax liability of the General Partner;  provided,  however,  the
General  Partner is not bound to comply  with this  covenant  to the extent such
distributions would violate applicable Delaware law.

      5.3 WITHHOLDING.  With respect to any withholding tax or other similar tax
liability or obligation to which the  Partnership  may be subject as a result of
any act or status of any  Partner or to which the  Partnership  becomes  subject
with  respect to any Unit,  the  Partnership  shall  have the right to  withhold
amounts of Available Cash  distributable to such Partner or with respect to such
Units, to the extent of the amount of such  withholding tax or other similar tax
liability or obligation pursuant to the provisions contained in Section 10.5.

      5.4  ADDITIONAL   PARTNERSHIP   INTERESTS.   If  the  Partnership   issues
Partnership  Interests in accordance  with Section 4.2 or 4.3 which are entitled
to certain distribution priorities,  Section 5.1 shall be amended, as necessary,
to  reflect  the  distribution   priority  of  such  Partnership  Interests  and
corresponding amendments shall be made to the provisions of Appendix II.

      5.5 DISTRIBUTIONS  UPON LIQUIDATION.  Proceeds from a Terminating  Capital
Transaction  and any other cash  received or  reductions  in reserves made after
commencement of the  liquidation of the Partnership  shall be distributed to the
Partners in accordance with Section 13.2.

ARTICLE 6. ALLOCATIONS.

      The Net Income,  Net Loss, and other  Partnership  items of income,  gain,
loss,  deduction  or credit as  provided  under  the  Code,  shall be  allocated
pursuant to the provisions of Appendix II, as amended from time to time.

ARTICLE 7. MANAGEMENT AND OPERATION OF BUSINESS.

      7.1  MANAGEMENT.

      A. Except as otherwise  expressly provided in this Agreement,  and subject
to the  provisions of Section 8.9, all  management  powers over the business and
affairs  the

                                      -20-
<PAGE>

Partnership are and shall be exclusively  vested in the General Partner,  and no
Limited  Partner shall have any right to participate  in or exercise  control or
management power over the business and affairs of the  Partnership.  The General
Partner may not be removed by the Limited  Partners,  with or without cause.  In
addition to the powers now or hereafter  granted a general  partner of a limited
partnership  under the Act or which are granted to the General Partner under any
other provision of this Agreement, the General Partner shall have full power and
authority to make contracts,  sign documents,  conduct  litigation,  acquire and
convey property, hire employees,  consultants and professionals,  raise capital,
borrow funds, incur liabilities,  invest funds, comply with all applicable laws,
and do all other things deemed  necessary or desirable by the General Partner to
conduct  the  business  of the  Partnership  on  behalf of the  Partnership;  to
exercise all powers set forth in Section 3.2, and to effectuate the purposes set
forth in Section 3.1,  provided  that any exercise of the  foregoing  rights and
powers must be consistent with the REIT Requirements.

      B. Except as provided in Section 8.9, each of the Limited  Partners agrees
that the  General  Partner is  authorized  to  execute,  deliver and perform the
agreements and  transactions  on behalf of the  Partnership  without any further
act,  approval or vote of the Partners,  notwithstanding  any other provision of
this Agreement to the fullest extent permitted under the Act or other applicable
law, rule or regulation.  The execution,  delivery or performance by the General
Partner or the  Partnership of any agreement  authorized or permitted under this
Agreement  shall not constitute a breach by the General Partner of any duty that
the General Partner may owe the Partnership or the Limited Partners or any other
Persons under this Agreement or of any duty stated or implied by law or equity.

      C. At all times from and after the date  hereof,  in  accordance  with the
provisions  of the  Acquisition  Agreement,  the  General  Partner may cause the
Partnership  to  establish  and  maintain at any and all times  working  capital
accounts  and other  cash or  similar  balances  in such  amount as the  General
Partner, in its sole and absolute  discretion,  deems appropriate and reasonable
from time to time.  Such accounts may include  funds of the General  Partner and
the other partnerships in the Operating  Partnership,  which the General Partner
shall be free to commingle.

      D. In exercising its authority under this  Agreement,  the General Partner
shall take into account the tax  consequences to any Partner of any action taken
by it and shall select the alternative  which appears at the time to present the
least adverse tax consequences to the Limited Partners.  By way of example,  but
not of  limitation:  If the General  Partner  decides to refinance  (directly or
indirectly) any outstanding indebtedness of the Partnership, the General Partner
shall use  reasonable  efforts to structure  such  refinancing  in a manner that
minimizes  any  adverse  tax  consequences  resulting  therefrom  to the Limited
Partners.  The General Partner and the Partnership shall not have liability to a
Limited Partner under any  circumstances  as a result of an income tax liability
incurred by such Limited Partner as a result of a necessary action (or inaction)
by the General  Partner taken pursuant to its authority  under and in accordance
with this Agreement where avoiding the resulting  adverse tax

                                      -21-
<PAGE>

consequences  to a Limited  Partner  was not  reasonably  practicable  under the
circumstances.

      7.2 CERTIFICATE OF LIMITED PARTNERSHIP. The General Partner shall file the
amended  Certificate  with the Secretary of State of Delaware as required by the
Act. The General  Partner shall use all reasonable  efforts to cause to be filed
such other  certificates  or documents  as may be  reasonable  and  necessary or
appropriate for the formation,  continuation,  qualification  and operation of a
limited partnership (or a partnership in which the limited partners have limited
liability)  in the State of Delaware  and any other  state,  or the  District of
Columbia,  in which the Partnership may elect to do business or own property. To
the  extent  that  such  action  is  determined  by the  General  Partner  to be
reasonable  and  necessary  or  appropriate,  the  General  Partner  shall  file
amendments to and  restatements  of the  Certificate and do all of the things to
maintain the Partnership as a limited partnership (or a partnership in which the
limited partners have limited liability) under the laws of the State of Delaware
and each other state, or the District of Columbia,  in which the Partnership may
elect to do business or own property.  Subject to the terms of Section  8.5A(iv)
hereof,  the General Partner shall not be required,  before or after filing,  to
deliver  or mail a copy  of the  Certificate  or any  amendment  thereto  to any
Limited Partner.

      7.3  REIMBURSEMENT OF THE GENERAL PARTNER AND THE COMPANY.

      A. Except as provided in this Section 7.3 and elsewhere in this  Agreement
(including the provisions of Articles 5 and 6 regarding distributions, payments,
and  allocations to which it may be entitled),  the General Partner shall not be
compensated for its services as general partner of the Partnership.

      B. The General  Partner,  shall be reimbursed on a monthly basis,  or such
other basis as it may  determine  in its sole and absolute  discretion,  for all
expenses  that it incurs  relating to the ownership and operation of, or for the
benefit of, the Partnership; provided, that the amount of any such reimbursement
shall be reduced by any interest  earned by the General  Partner with respect to
bank  accounts or other  instruments  or accounts  held by it in its name.  Such
reimbursement  shall be in  addition  to any  reimbursement  made as a result of
indemnification pursuant to Section 7.6.

      7.4 OUTSIDE  ACTIVITIES OF THE GENERAL PARTNER.  The General Partner shall
not  directly or  indirectly  enter into or conduct any  business  other than in
connection  with the  ownership,  acquisition,  development  and  disposition of
Partnership Interests and the management of the business of the Partnership, and
such  activities  as  are  incidental  thereto.  The  General  Partner  and  any
Affiliates  of the General  Partner may acquire  Limited  Partner  Interests and
shall be entitled to exercise all rights of a Limited  Partner  relating to such
Limited Partner Interests.

      7.5  CONTRACTS WITH AFFILIATES.

      A. The  Partnership  may lend or  contribute  funds or other assets to its
Subsidiaries  or other  Persons  in which it has an equity  investment  and such
Persons

                                      -22-
<PAGE>

may borrow funds from the  Partnership,  on terms and conditions  established in
the sole and absolute discretion of the General Partner. The foregoing authority
shall not create any right or  benefit in favor of any  Subsidiary  or any other
Person.

      B. Except as provided in Section 7.4, the  Partnership may Transfer assets
to joint ventures,  other partnerships,  corporations or other business entities
in which it is or thereby  becomes a participant  upon such terms and subject to
such conditions consistent with this Agreement and applicable law as the General
Partner, in its sole and absolute discretion, believes are advisable.

      C.  Except  as  expressly   permitted  by  this   Agreement  or  otherwise
contemplated by the Acquisition  Agreement,  neither the General Partner nor any
of its  Affiliates  shall sell,  Transfer or convey any property to, or purchase
any property from, the Partnership,  directly or indirectly,  except pursuant to
transactions that are determined by the General Partner in good faith to be fair
and reasonable.

      D. Except as provided  otherwise in Section 8.9, the General  Partner,  in
its sole and  absolute  discretion  and  without  the  approval  of the  Limited
Partners, may propose and adopt, on behalf of the Partnership,  Employee Benefit
Plans  funded by the  Partnership  for the benefit of  employees  of the General
Partner,  the  Partnership,  Subsidiaries of the Partnership or any Affiliate of
any of them in respect of services  performed,  directly or indirectly,  for the
benefit of the  Partnership,  the General  Partner,  or any  Subsidiaries of the
Partnership.

      E. The General Partner is expressly  authorized to enter into, in the name
and on behalf of the  Partnership,  a "right of first  opportunity" or "right of
first  offer"  arrangement,   non-competition   agreements  and  other  conflict
avoidance  agreements with various Affiliates of the Partnership and the General
Partner,  on such  terms  as the  General  Partner,  in its  sole  and  absolute
discretion, believes are advisable.

      7.6  INDEMNIFICATION.

      A. To the fullest extent permitted by Delaware law, the Partnership  shall
indemnify each Indemnitee from and against any and all losses, claims,  damages,
liabilities,   joint  or  several,  expenses  (including,   without  limitation,
reasonable attorneys' fees and other legal fees and expenses), judgments, fines,
settlements,  and  other  amounts  arising  from  any and all  claims,  demands,
actions, suits or proceedings, civil, criminal, administrative or investigative,
that relate to the operations of the  Partnership or the Company as set forth in
this Agreement, in which such Indemnitee may be involved, or is threatened to be
involved, as a party or otherwise, except to the extent it is finally determined
by a court of competent jurisdiction, from which no further appeal may be taken,
that  such  Indemnitee's  action  constituted   intentional  acts  or  omissions
constituting  willful  misconduct or fraud.  Without  limitation,  the foregoing
indemnity  shall extend to any liability of any  Indemnitee,  pursuant to a loan
guaranty or otherwise for any  indebtedness of the Partnership or any Subsidiary
of the Partnership  (including,  without limitation,  any indebtedness which the
Partnership  or any Subsidiary of the  Partnership  has assumed or taken subject
to), except with respect to Partnership debt

                                      -23-
<PAGE>

that has been  assumed or  guaranteed  by an  Indemnitee  in its  capacity  as a
Limited  Partner.  The General  Partner is hereby  authorized and empowered,  on
behalf  of the  Partnership,  to  enter  into one or more  indemnity  agreements
consistent  with the  provisions of this Section 7.6 in favor of any  Indemnitee
having  or  potentially  having  liability  for  any  such   indebtedness.   Any
indemnification  pursuant  to this  Section  7.6  shall be made  only out of the
assets of the  Partnership,  and  neither  the  General  Partner nor any Limited
Partner  shall  have  any  obligation  to  contribute  to  the  capital  of  the
Partnership,  or otherwise  provide funds, to enable the Partnership to fund its
obligations under this Section 7.6.

      B.  Reasonable  expenses  incurred  by an  Indemnitee  who is a party to a
proceeding  shall be paid or  reimbursed  by the  Partnership  in advance of the
final disposition of the proceeding.
      C. The  indemnification  provided by this Section 7.6 shall be in addition
to any other rights to which an  Indemnitee  or any other Person may be entitled
under any agreement,  pursuant to any vote of the Partners,  under the Company's
Articles of Incorporation,  as a matter of law, or otherwise, and shall continue
as to an Indemnitee  who has ceased to serve in such capacity  unless  otherwise
provided  in  a  written  agreement  pursuant  to  which  such  Indemnities  are
indemnified.

      D. The  Partnership  may,  but shall not be  obligated  to,  purchase  and
maintain  insurance,  on behalf of the Indemnities and such other Persons as the
General  Partner shall  determine,  against any  liability  that may be asserted
against or expenses that may be incurred by such Person in  connection  with the
Partnership's  activities,  regardless of whether the Partnership would have the
power to indemnify such Person  against such  liability  under the provisions of
this Agreement.

      E. For purposes of this Section  7.6, the  Partnership  shall be deemed to
have  requested an Indemnitee to serve as fiduciary of an Employee  Benefit Plan
whenever the  performance  by such  Indemnitee of its duties to the  Partnership
also imposes duties on, or otherwise  involves  services by, such  Indemnitee to
the plan or participants or beneficiaries of the plan;  excise taxes assessed on
an Indemnitee with respect to an Employee Benefit Pan pursuant to applicable law
shall constitute fines within the meaning of this Section 7.6; and actions taken
or omitted by the  Indemnitee  with  respect to an Employee  Benefit Plan in the
performance of its duties for a purpose  reasonably  believed by it to be in the
interest of the participant and  beneficiaries of the plan shall be deemed to be
for a purpose which is not opposed to the best interests of the Partnership.

      F. In no event may an  Indemnitee  subject any of the Limited  Partners to
personal liability by reason of the indemnification provisions set forth in this
Agreement.

      G. An Indemnitee shall not be denied  indemnification  in whole or in part
under this Section 7.6 because the Indemnitee had an interest in the transaction
with  

                                      -24-
<PAGE>

respect to which the  indemnification  applies if the  transaction was otherwise
permitted by the terms of this Agreement.

      H.  The  provisions  of  this  Section  7.6 are  for  the  benefit  of the
Indemnitees,  their heirs, successors,  assigns and administrators and shall not
be deemed  to create  any  rights  for the  benefit  of any other  Persons.  Any
amendment,  modification  or repeal of this Section 7.6 or any provision  hereof
shall be  prospective  only and shall not in any way  affect  the  Partnership's
liability to any  Indemnitee  under this  Section 7.6, as in effect  immediately
prior to such amendment,  modification, or repeal with respect to claims arising
from or  relating  to  matters  occurring,  in whole  or in part,  prior to such
amendment,  modification or repeal,  regardless of when such claims may arise or
be asserted.

      I.  The  provisions  of this  Section  7.6  shall be  inapplicable  to any
investigation,  claim,  suit,  or  proceeding,  or the  portion  thereof,  which
concerns  claims for breach of  contract  between the  Partnership  and a Person
contracting other than in such Person's capacity as a Partner,  or as an officer
or director of the General Partner.

      J. No provision of this Section 7.6 shall be construed as  permitting  any
contract or transaction  which is prohibited by the provisions of Section 9.2(b)
of the Acquisition Agreement.

      7.7  LIABILITY OF THE GENERAL PARTNER.

      A.  Notwithstanding  anything to the contrary set forth in this Agreement,
the  General  Partner and its  officers  and  directors  shall not be liable for
monetary  damages to the  Partnership,  any Partners or any Assignees for losses
sustained  or  liabilities  incurred as a result of errors in judgment or of any
act or omission, if the General Partner acted in good faith; provided,  however,
the  foregoing  shall not be deemed to exculpate  the Company from any liability
the Company may have under the Acquisition Agreement.

      B. Subject to its  obligations  and duties as General Partner set forth in
Section 7.1A hereof,  the General Partner may exercise any of the powers granted
to it by this  Agreement and perform any of the duties imposed upon it hereunder
either  directly or by or through its agent.  The General  Partner  shall not be
liable  for any  acts or  omissions  on the part of any such  agent,  except  in
circumstances  for which the General Partner may be liable under Section 7.7A or
would not be subject to indemnification under Section 7.6.

      C. Any  amendment,  modification  or  repeal  of this  Section  7.7 or any
provision  hereof shall be prospective  only and shall not in any way affect the
limitations on the General Partner's and its officers' and directors'  liability
to the Partnership and the Limited  Partners under this Section 7.7 as in effect
immediately  prior to such  amendment,  modification  or repeal with  respect to
claims arising from or relating to 

                                      -25-
<PAGE>

matters occurring, in whole or in part, prior to such amendment, modification or
repeal, regardless of when such claims may arise or be asserted.


                                      -26-
<PAGE>

      7.8 LIMITED  PARTNERS'  RIGHT TO BRING  DERIVATIVE  LAWSUITS.  Any Limited
Partner may bring an action on behalf of the Partnership, as permitted under the
Act and the laws of the State of Delaware, to recover a judgment in favor of the
Partnership  if the  General  Partner  has  refused to bring the action or if an
effort to cause  the  General  Partner  to bring  the  action  is not  likely to
succeed.

      7.9  OTHER MATTERS CONCERNING THE GENERAL PARTNER.

      A. The  General  Partner  may rely and shall be  protected  in acting,  or
refraining from acting, upon any resolution, certificate, statement, instrument,
opinion,  report, notice,  request,  consent,  order, bond, debenture,  or other
paper or  document  believed  by it in good faith to be genuine and to have been
signed or presented by the proper party or parties.

      B. The  General  Partner  may  consult  with legal  counsel,  accountants,
appraisers,  management consultants,  investment bankers, architects, engineers,
environmental consultants and other consultants and advisers selected by it, and
any act  taken or  omitted  to be taken in  reliance  upon the  opinion  of such
Persons as to matters  which such  General  Partner  reasonably  believes  to be
within such Person's  professional  or expert  competence  shall be conclusively
presumed to have been done or omitted in good faith and in accordance  with such
opinion.

      C. The  General  Partner  shall have the  right,  in respect of any of its
powers or  obligations  hereunder,  to act  through  any of its duly  authorized
officers and duly appointed attorneys-in-fact.  Each such attorney shall, to the
extent provided by the General Partner in the power of attorney, have full power
and authority to do and perform all and every act and duty which is permitted or
required to be done by the General Partner hereunder.

      D.  Notwithstanding any other provisions of this Agreement or the Act, any
action of the General  Partner on behalf of the  Partnership  or any decision of
the  General  Partner  to  refrain  from  acting on  behalf of the  Partnership,
undertaken in the good faith belief that such action or omission is necessary or
advisable  in order (i) to protect  the  ability of the  Company to  continue to
qualify  as a REIT;  or (ii) to avoid the  Company  incurring  any  taxes  under
Section 857 or Section  4981 of the Code,  is  expressly  authorized  under this
Agreement and is deemed approved by all of the Limited Partners.

      7.10 TITLE TO PARTNERSHIP  ASSETS.  Title to Partnership  assets,  whether
real,  personal or mixed and whether tangible or intangible,  shall be deemed to
be owned by the  Partnership  as an  entity,  and no  Partner,  individually  or
collectively,  shall have any ownership  interest in such Partnership  assets or
any portion thereof.  Title to any or all of the Partnership  assets may be held
in the name of the Partnership,  the General Partner or one or more nominees, as
the General Partner may determine,  including Affiliates of the General Partner.
The General Partner hereby declares and warrants that any Partnership  asset for
which legal  title is held in the name of the General  Partner or any nominee or
Affiliate of the General  Partner  shall be held by the General  Partner

                                      -27-
<PAGE>

for the use and benefit of the  Partnership in accordance with the provisions of
this Agreement; provided, that the General Partner shall use its best efforts to
cause beneficial and record title to such assets to be vested in the Partnership
as soon as reasonably  practicable.  All Partnership assets shall be recorded as
the property of the  Partnership in its books and records,  irrespective  of the
name in which legal title to such Partnership assets is held.

      7.11 RELIANCE BY THIRD PARTIES.  Notwithstanding  anything to the contrary
in this Agreement,  any Person dealing with the Partnership shall be entitled to
assume that the General Partner has full power and authority, without consent or
approval of any other Partner or Person,  to encumber,  sell or otherwise use in
any manner any and all assets of the Partnership and to enter into any contracts
on  behalf of the  Partnership,  and take any and all  actions  on behalf of the
Partnership,  and such Person shall be entitled to deal with the General Partner
as if the General Partner were the  Partnership's  sole party in interest,  both
legally  and  beneficially.  Each  Limited  Partner  hereby  waives  any and all
defenses  or other  remedies  which  may be  available  against  such  Person to
contest,  negate or disaffirm  any action of the General  Partner in  connection
with any such  dealing.  In no event shall any Person  dealing  with the General
Partner or its  representatives be obligated to ascertain that the terms of this
Agreement have been complied with or to inquire into the necessity or expedience
of any act or action of the  General  Partner or its  representatives.  Each and
every  certificate,  document  or other  instrument  executed  on  behalf of the
Partnership by the General  Partner or its  representatives  shall be conclusive
evidence in favor of any and every Person relying thereon or claiming thereunder
that:  (i) at the  time of the  execution  and  delivery  of  such  certificate,
document or instrument,  this  Agreement was in full force and effect;  (ii) the
Person  executing and delivering  such  certificate,  document or instrument was
duly authorized and empowered to do so for and on behalf of the Partnership; and
(iii) such  certificate,  document or instrument was duly executed and delivered
in accordance  with the terms and  provisions  of this  Agreement and is binding
upon the Partnership.

ARTICLE 8. RIGHTS AND OBLIGATIONS OF LIMITED PARTNERS.

      8.1 LIMITATION OF LIABILITY.  The Limited Partners shall have no liability
under this Agreement except as expressly  provided in this Agreement,  including
Sections 10.5 and 13.3 hereof, or under the Act.  Notwithstanding  the preceding
sentence, each Limited Partner shall have the right, but not the obligation,  to
guarantee a portion of the  indebtedness  of the  Partnership in accordance with
the terms of the Acquisition Agreement.

      8.2 MANAGEMENT OF BUSINESS. No Limited Partner or Assignee (other than the
General Partner, any of its Affiliates or any officer, director, employee, agent
or trustee of the General Partner,  the Partnership or any of their  Affiliates,
in their  capacity  as such)  shall take part in the  operation,  management  or
control (within the meaning of the Act) of the Partnership's business,  transact
any business in the  Partnership's  name or have the power to sign documents for
or otherwise bind the  Partnership.

                                      -28-
<PAGE>

The  transaction  of any  such  business  by  the  General  Partner,  any of its
Affiliates or any officer, director,  employee, partner, agent or trustee of the
General Partner,  the Partnership or any of their Affiliates,  in their capacity
as such, shall not affect,  impair or eliminate the limitations on the liability
of the Limited Partners or Assignees under this Agreement.

      8.3 OUTSIDE  ACTIVITIES  OF LIMITED  PARTNERS.  Subject to any  agreements
entered  into  pursuant to Section 7.5 hereof and any other  agreements  entered
into by a Limited  Partner or its Affiliates  with the Partnership or any of its
Subsidiaries  including the  Acquisition  Agreement,  any Limited Partner (other
than the Company) and any officer, director, employee, agent, trustee, Affiliate
or shareholder of any Limited Partner (other than the Company) shall be entitled
to and may have business interests and engage in business activities in addition
to  those  relating  to  the  Partnership,   including  business  interests  and
activities  that are in  direct  competition  with the  Partnership  or that are
enhanced by the activities of the  Partnership.  Neither the Partnership nor any
Partners  shall  have any  rights by virtue of this  Agreement  in any  business
ventures of any Limited Partner or Assignee which are permitted within the scope
of this Section 8.3. None of the Limited  Partners  (other than the Company) nor
any other  Person  shall  have any  rights by  virtue of this  Agreement  or the
Partnership  relationship  established  hereby in any  business  ventures of any
other Person and such Person shall have no obligation pursuant to this Agreement
to offer any  interest in any such  business  ventures to the  Partnership,  any
Limited  Partner  or any such other  Person,  even if such  opportunity  is of a
character  which, if presented to the  Partnership,  any Limited Partner or such
other Person, could be taken by such Person.

      8.4 RETURN OF CAPITAL.  Except in connection with the exercise of Exchange
Rights or Put Rights,  no Limited Partner shall be entitled to the withdrawal or
return of its Capital  Contribution,  except to the extent of distributions made
pursuant to this Agreement or upon  termination  of the  Partnership as provided
herein.  Except to the extent provided by Appendix II, or as otherwise expressly
provided in this  Agreement,  no Limited Partner or Assignee shall have priority
over any other Limited  Partner or Assignee,  either as to the return of Capital
Contributions or as to profits, losses or distributions.

      8.5  RIGHTS OF LIMITED PARTNERS RELATING TO THE PARTNERSHIP.

      A. In addition to the other  rights  provided by this  Agreement or by the
Act, and except as limited by Section 8.5B hereof,  each Limited  Partner  shall
have the  right,  for a purpose  reasonably  related to such  Limited  Partner's
interest as a limited  partner in the  Partnership,  upon written  demand with a
statement  of the  purpose  of such  demand and at such  Limited  Partner' s own
expense  (including such reasonable  copying and  administrative  charges as the
General  Partner may establish  from time to time):  (i) to obtain a copy of the
most recent  annual and  quarterly  reports  filed by the  Company  with the SEC
pursuant  to the  Exchange  Act;  (ii) to  obtain  a copy  of the  Partnership's
federal,  state and local income tax returns for each Partnership Year; (iii) to
obtain a current list of the name and last known business,  residence or mailing

                                      -29-
<PAGE>


address  of each  Partner;  (iv) to  obtain  a copy  of this  Agreement  and the
Certificate  and all  amendments  and/or  restatements  thereto,  together  with
executed copies of all powers of attorney pursuant to which this Agreement,  the
Certificate and all amendments and/or  restatements  thereto have been executed;
and (v) to obtain true and full  information  regarding the amount of cash and a
description and statement of any other property or services  contributed by each
Partner and which each Partner has agreed to contribute  in the future,  and the
date on which each became a Partner.

      B.  Notwithstanding  any other  provision of this Section 8.5, the General
Partner may keep confidential from the Limited Partners, for such period of time
as the General  Partner  determines  in its sole and absolute  discretion  to be
reasonable,  any information that (i) the General Partner reasonably believes to
be in the  nature  of trade  secrets  or  other  confidential  information,  the
disclosure  of which the  General  Partner in good faith  believes is not in the
best interests of the Partnership or the Company or could damage the Partnership
or its  business;  or (ii) the  Partnership  is required by law or by agreements
with an unaffiliated third party to keep confidential.

      8.6 EXCHANGE RIGHTS. The Limited Partners may exchange all or a portion of
their  L.P.  Units for  shares of Common  Stock on the terms and  subject to the
conditions and restrictions contained in the Exchange Rights Agreement.

      8.7  PUT RIGHTS.

     A. Upon the terms and subject to the  conditions  of this  Agreement,  each
Limited  Partner  (other than Carl E. Berg and Clyde J. Berg with respect to all
L.P. Units owned by them  beneficially  as of the Effective Date) shall have the
right to  tender to the  Partnership  outstanding  L.P.  Units no more than once
during any 12-month period  commencing  after December 29, 1999. The Partnership
shall  purchase  properly  tendered L.P.  Units for cash at a price (the "Tender
Price")  equal to the average  market  value of the Common Stock price as of the
date the  Limited  Partner  delivers  to the  General  Partner,  at the  address
provided in Appendix II, a completed and duly executed  Letter of Transmittal in
the form attached as Exhibit A to the Exchange Rights  Agreement,  and any other
documents  required by the Letter of  Transmittal.  Only a tender in this manner
will  constitute a valid tender of L.P. Units pursuant to this Section 8.7A. The
General Partner shall make all determinations as to the validity and form of any
tender of L.P. Units in accordance  with the provisions of this  Agreement,  and
upon  rejection of a tender,  shall give the tendering  holder written notice of
such  rejection,  which shall  include the reasons  therefor.  Unless  otherwise
agreed by the General  Partner or as provided in Section  8.7C,  tenders of L.P.
Units  pursuant  to this  Section  8.7A  shall be  irrevocable  and shall not be
subject to withdrawal or modification.

      B. Within 15 days after the valid tender of L.P. Units pursuant to Section
8.7A,  the Company may make an election to purchase such L.P.  Units itself with
cash of the Company (the "Cash Election"). If with respect to any tender of L.P.
Units  pursuant to this Section 8.7, the Company makes the Cash  Election,  then
within 90 days after such tender the Company shall pay to the tendering  Limited
Partner an aggregate  amount of cash equal to the purchase price of the tendered
L.P. Units with available cash,

                                      -30-
<PAGE>

borrowed  funds or the  proceeds of an  offering of new shares of Common  Stock.
Upon acquiring the L.P.  Units,  the Company may cause the Partnership to retire
the L.P.  Units and convert them to the same number of Units of General  Partner
Interest, and the General Partner shall amend Appendix I accordingly.

C.  Notwithstanding  the  foregoing,  if the purchase  price for the L.P.  Units
tendered by a Limited Partners in one year exceeds  $1,000,000,  the Partnership
or the Company  shall be entitled  to reduce  proportionally  the number of L.P.
Units to be  acquired  from each  Tendering  Partner so that the total  purchase
price does not exceed $1,000,000 if the Company so elects.  In addition,  if the
Company does not timely make the Cash Election,  the  Partnership  shall deliver
the purchase price for the tendered L.P. Units to the Limited  Partner within 45
days after the Letter of Transmittal was delivered to the General  Partner.  The
General  Partner may defer payment of the purchase  price until such time not to
exceed 120 days after the valid tender of L.P. Units pursuant to Section 8.7A as
the Partnership has adequate Available Cash after payment of the purchase price,
in the reasonable judgment of the General Partner, to fund current distributions
necessary for the Company to satisfy the REIT Requirements  following the waiver
by the  Company  of its  right to make the Cash  Election.  In such  event,  the
General  Partner shall give the tendering  Limited Partner written notice of its
decision  to  defer  the  payment  with a  calculation  supporting  the  General
Partner's  determination  within 20 days  after the  Letter of  Transmittal  was
delivered  to the General  Partner.  Upon  receiving  such  notice,  the Limited
Partner may withdraw the tender.  In addition,  the Limited  Partner may instead
exercise its rights under the Exchange  Rights  Agreement.  If a Limited Partner
tenders L.P. Units  pursuant to this Section 8.7, the Limited  Partner shall pay
the amount of any additional documentary, stamp or similar issue or transfer tax
which is due, and shall be responsible for all income or other taxes as a result
of such exchange.

      D.  Each  tender of L.P.  Units  shall  constitute  a  representation  and
warranty by the tendering  Limited  Partner of each of the  representations  and
warranties set forth in the form of Letter of Transmittal.

      E. Until the holder of L.P.  Units  tendered  pursuant  to Section 8.7 has
received cash in exchange therefor,  such Limited Partner shall continue to hold
and own such L.P. Units for all purposes of this Agreement.

                                      -31-
<PAGE>


      8.8  NEW EQUITY FINANCING RIGHTS.

      A. If the General  Partner  determines that it is in the best interests of
the  Partnership to obtain  additional  funds through the issuance of additional
Partnership  Interests,  the  General  Partner  shall first offer to the Limited
Partners  in each of the  partnerships  comprising  the  Operating  Partnership,
including the  Partnership,  the right of first refusal to purchase that portion
of such additional  Partnership Interests which their respective numbers of L.P.
Units  bear to the  total  number of  outstanding  L.P.  Units in the  Operating
Partnership.  The General  Partner  shall make this offer  pursuant to a written
notice describing the offering price,  class or series of Partnership  Interest,
and all other  material  terms of the offer.  Such notice  shall be sent to each
Limited Partner at the address reflected in Appendix I, as amended.  The Limited
Partners  shall have 10 days from the date of such  notice to elect to  purchase
any such additional Partnership Interests.  Such election shall be made pursuant
to a written  subscription  form  specifying  the number of Units of  additional
Limited  Partnership  Interests the Limited  Partner  intends to acquire and the
total purchase price  therefor,  and shall be signed by the Limited  Partner and
delivered  to the General  Partner at the address set forth on Appendix I. After
such 10-day  period,  the General  Partner shall be free to offer any additional
Limited Partnership Interests on substantially similar terms to non-Partners and
Partners alike.

      B. The  foregoing  right of the  Limited  Partners  to acquire  additional
equity interests offered by the Partnership ("New Equity Financing Right") shall
not  apply to any  offering  (i)  which is part of a  transaction  in which  the
Limited  Partners had the ability to exercise their New Equity  Financing Rights
under the Acquisition Agreement with respect to an offering of Equity Securities
by the Company,  (ii) in connection with a merger or other business  combination
subject to approval by the L.P. Unit Majority  pursuant to Section 8.9, (iii) to
a Person in  connection  with the  acquisition  of  property  or services by the
Partnership  from  such  Person,  or  (iv)  of  any  Partnership  Interest  upon
conversion of an outstanding Equity Security of the Partnership, any Partnership
Subsidiary, or the Company.

      8.9  MATTERS REQUIRING L.P. UNIT MAJORITY APPROVAL.

      The consent of the L.P. Unit Majority will be required with respect to the
following  actions  involving  the  Partnership:  (i)  the  material  amendment,
modification or termination of the Agreement;  (ii) a general assignment for the
benefit of creditors or the appointment of a custodian,  receiver or trustee for
any of the assets of the  Partnership;  (iii) the  institution of any proceeding
for bankruptcy of the Partnership;  (iv) the Transfer of any General Partnership
Interests,  including  transfers  attendant  to  any  merger,  consolidation  or
liquidation  of the  Company  except as  otherwise  provided  in 11.2C;  (v) the
admission of any additional or substitute  General  Partner in the  Partnership;
and (vi) a Change of Control  Transaction.  In  addition,  until the  Protective
Provisions  Expiration  Date, the consent of the L.P. Unit Majority will also be
required  with respect to: (i) any  Terminating  Capital  Transaction;  (ii) the
dissolution  and  liquidation of the  Partnership;  and (iii) the  Partnership's
issuance of Limited Partner

                                      -32-
<PAGE>

Interests  having  seniority  over the L.P.  Units with respect to  distributing
assets, and voting rights.

      8.10  APPROVAL OF CERTAIN  TAXABLE  SALES.  Until the earlier of the tenth
anniversary of the closing of the Berg Acquisition and the Protective Provisions
Expiration  Date, the General  Partner must obtain the prior written  consent of
Carl E. Berg,  and upon Carl  Berg's  death if prior to the  expiration  of this
provision,  Clyde J. Berg, before effecting any sale or other transfer of any of
the Properties identified on Schedules 1, 2, 3 or 5 to the Acquisition Agreement
on behalf of the Partnership  which results in the recognition of taxable income
by any member of the Berg Group  under the Code.  Until the earlier of the tenth
anniversary of the Berg  Acquisition  and the date on which John T.  Kontrabecki
ceases to  beneficially  own at least 750,000 L.P.  Units,  the General  Partner
shall obtain his prior  written  consent  prior to  effecting  any sale or other
transfer  of  any of  the  Properties  (identified  in  Schedules  4 or 5 to the
Acquisition  Agreement)  as owned by  Kontrabecki,  Triangle  Partners,  or Berg
Ventures  II,  which  will  result  in the  recognition  of  taxable  income  by
Kontrabecki under the Code.

ARTICLE 9. BOOKS, RECORDS, ACCOUNTING AND REPORTS.

      9.1  RECORDS AND ACCOUNTING.

The General  Partner shall keep or cause to be kept at the  principal  office of
the Partnership those records and documents required to be maintained by the Act
and other books and records deemed by the General Partner to be appropriate with
respect to the Partnership's business,  including, without limitation, all books
and records necessary to comply with applicable REIT Requirements and to provide
to the Limited Partners any information,  lists and copies of documents required
to be provided pursuant to Sections 8.5A and 9.3 hereof.  Any records maintained
by or on behalf of the  Partnership in the regular course of its business may be
kept  on,  or be in the  form  of,  punch  cards,  magnetic  tape,  photographs,
micrographics or any other information storage device, provided that the records
so  maintained  are  convertible  into  clearly  legible  written  form within a
reasonable period of time. The books of the Partnership shall be maintained, for
financial and tax reporting purposes, on an accrual basis in 

                                      -33-
<PAGE>

accordance with GAAP, or such other basis as the General  Partner  determines to
be necessary or appropriate.

      9.2  FISCAL YEAR.  The fiscal year of the Partnership shall be the
calendar year.

ARTICLE 10.     TAX MATTERS.

      10.1 PREPARATION OF TAX RETURNS. The General Partner shall arrange for the
preparation and timely filing of all  Partnership  returns for federal and state
income tax  purposes  and shall use all  reasonable  efforts to furnish,  within
sixty  (60)  days  of the  close  of each  taxable  year,  the  tax  information
reasonably  required by Limited  Partners for their federal and state income tax
reporting purposes.

      10.2 TAX ELECTIONS. The General Partner shall elect for the Partnership to
be considered a limited  partnership on all applicable  federal and state income
tax returns to be filed by the Partnership. Except as otherwise provided herein,
the  General  Partner  shall,  in its sole and  absolute  discretion,  determine
whether  to  make  any  other   available   election   pursuant   to  the  Code.
Notwithstanding  the above,  in making any such tax election the General Partner
shall take into account the tax consequences to the Limited  Partners  resulting
from any such  election.  The General  Partner  shall make such tax elections on
behalf of the Partnership as the L.P. Unit Majority  request,  provided that the
General  Partner  believes that such election is not adverse to the interests of
the General Partner, including its interest in preserving its qualification as a
REIT  under  the  Code.  In  addition,  the  General  Partner  shall  elect  the
"traditional   method"  of  making  Section  704(c)   allocations   pursuant  to
Regulations  Section 1.704-3 with respect to each Property under the Acquisition
Agreement.  The General  Partner  shall have the right to seek to revoke any tax
election it makes  (other than the  election  to use the  traditional  method of
making  the  Section  704(c)  allocations   described  in  this  Section  10.2),
including,  without limitation, the election under Section 754 of the Code, upon
the General Partner' s determination,  in its sole and absolute discretion, that
such  revocation  is in the best  interests of the Limited  Partners  taken as a
whole and with the  approval  of the L.P.  Unit  Majority  until the  Protective
Provisions Expiration Date. All such elections and determinations may be made on
a  Property-by-Property  basis,  and the  General  Partner  shall be required to
analyze the impact of all such elections and determinations on that basis.

      10.3 TAX MATTERS PARTNER.

      A.  The  General  Partner  shall  be  the  "tax  matters  partner"  of the
Partnership for federal income tax purposes.  Pursuant to Section 6230(e) of the
Code, upon receipt of notice from the Internal  Revenue Service of the beginning
of an administrative proceeding with respect to the Partnership, the tax matters
partner  shall  furnish the Internal  Revenue  Service  with the name,  address,
taxpayer  identification  number, and Percentage Interest of each of the Limited
Partners and the Assignees;  provided,  that such information is provided to the
Partnership by the Limited Partners and the Assignees.

                                      -34-
<PAGE>

      B. The tax matters partner is authorized, but not required:

           (1) to enter into any settlement  with the Internal  Revenue  Service
      with  respect  to any  administrative  or  judicial  proceedings  for  the
      adjustment  of  Partnership  items  required to be taken into account by a
      Partner for income tax purposes  (such  administrative  proceedings  being
      referred to as a "tax audit" and such judicial  proceedings being referred
      to as "judicial review"),  and in the settlement agreement the tax matters
      partner may expressly  state that such agreement  shall bind all Partners,
      except that such  settlement  agreement shall not bind any Partner (i) who
      (within the time prescribed  pursuant to the Code and Regulations) files a
      statement with the Internal Revenue Service providing that the tax matters
      partner shall not have the authority to enter into a settlement  agreement
      on behalf of such Partner;  or (ii) who is a "notice  partner" (as defined
      in  Section  6231(a)(8)  of the Code) or a member of a "notice  group" (as
      defined in Section 6223(b)(2) of the Code);

           (2) in the event that a notice of a final  administrative  adjustment
      at the Partnership  level of any item required to be taken into account by
      a Partner  for tax  purposes (a "final  adjustment")  is mailed to the tax
      matters  partner,  to  seek  judicial  review  of such  final  adjustment,
      including the filing of a petition for readjustment  with the Tax Court or
      the filing of a complaint  for refund with the United  States Claims Court
      or the District  Court of the United  States for the district in which the
      Partnership's principal place of business is located;

           (3) to  intervene  in any  action  brought by any other  Partner  for
      judicial review of a final adjustment;

           (4) to file a  request  for an  administrative  adjustment  with  the
      Internal  Revenue  Service and, if any part of such request is not allowed
      by the Internal Revenue Service, to file an appropriate pleading (petition
      or complaint) for judicial review with respect to such request;

           (5) to enter into an agreement with the Internal  Revenue  Service to
      extend the period for assessing any tax which is  attributable to any item
      required to be taken account of by a Partner for tax purposes,  or an item
      affected by such item; and

           (6) to take  any  other  action  on  behalf  of the  Partners  or the
      Partnership in connection with any tax audit or judicial review proceeding
      to the extent permitted by applicable law or regulations.

      The  taking of any  action  and the  incurring  of any  expense by the tax
      matters  partner in  connection  with any such  proceeding,  except to the
      extent required by law, is a matter in the sole and absolute discretion of
      the tax matters partner and the provisions  relating to indemnification of
      the General  Partner set forth in

                                      -35-
<PAGE>

     Section 7.6 of this Agreement shall be fully  applicable to the tax matters
     partner in its capacity as such.

      C. The tax matters partner shall receive no compensation for its services.
All third  party  costs and  expenses  incurred  by the tax  matters  partner in
performing its duties as such (including legal and accounting fees and expenses)
shall be borne by the Partnership. Nothing herein shall be construed to restrict
the  Partnership  from  engaging  an  accounting  firm to assist the tax matters
partner in discharging its duties hereunder, so long as the compensation paid by
the Partnership for such services is reasonable.

      10.4  ORGANIZATIONAL  EXPENSES.  The  Partnership  shall  elect to  deduct
expenses,  if any,  incurred by it in organizing the Partnership  ratably over a
60-month period as provided in Section 709 of the Code.

      10.5  WITHHOLDING.  Each Limited Partner hereby authorizes the Partnership
to withhold  from, or pay on behalf of or with respect to, such Limited  Partner
any amount of federal,  state,  local, or foreign taxes that the General Partner
determines  that the  Partnership is required to withhold or pay with respect to
any amount  distributable  or allocable to such Limited Partner pursuant to this
Agreement,  including,  without limitation, any taxes required to be withheld or
paid by the Partnership  pursuant to Sections 1441,  1442,  1445, or 1446 of the
Code.  Any amount paid on behalf of or with respect to a Limited  Partner  shall
constitute a loan by the Partnership to such Limited  Partner,  which loan shall
be repaid by such Limited  Partner  within 15 days after notice from the General
Partner that such payment must be made unless (i) the Partnership withholds such
payment  from a  distribution  which  would  otherwise  be made  to the  Limited
Partner;  or (ii) the  General  Partner  determines,  in its  sole and  absolute
discretion,  that such payment may be  satisfied  out of the amount of Available
Cash which would,  but for such payment,  be distributed to the Limited Partner.
Any  amounts  withheld  pursuant to the  foregoing  clauses (i) or (ii) shall be
treated as having been distributed to such Limited Partner. Each Limited Partner
hereby  unconditionally  and  irrevocably  grants to the  Partnership a security
interest in such Limited Partner' s Partnership  Interest to secure such Limited
Partner's  obligation to pay to the Partnership any amounts  required to be paid
pursuant to this Section 10.5. In the event that a Limited  Partner fails to pay
when due any amounts owed to the Partnership  pursuant to this Section 10.5, the
General  Partner  may, in its sole and  absolute  discretion,  elect to make the
payment to the Partnership on behalf of such defaulting Limited Partner,  and in
such event shall be deemed to have loaned such amount to such defaulting Limited
Partner  and shall  succeed to all rights and  remedies  of the  Partnership  as
against such defaulting Limited Partner. Without limitation,  in such event, the
General  Partner  shall  have the  right to  receive  distributions  that  would
otherwise be distributable to such defaulting Limited Partner until such time as
such loan,  together with all interest  thereon,  has been paid in full, and any
such distributions so received by the General Partner shall be treated as having
been  distributed to the defaulting  Limited Partner and immediately paid by the
defaulting Limited Partner to the General Partner in repayment of such loan. Any
amount payable by a Limited Partner

                                      -36-
<PAGE>

hereunder  shall bear  interest  at the  highest  base or prime rate of interest
published from time to time by any of Wells Fargo Bank,  N.A., plus 4 percentage
points,  but in no event higher than the maximum lawful rate of interest on such
obligation,  such interest to accrue from the date such amount is due (i.e.,  15
days after demand) until such amount is paid in full. Each Limited Partner shall
take such actions as the  Partnership  or the General  Partner  shall request in
order to perfect or enforce the security interest created hereunder.

ARTICLE 11.     TRANSFERS AND WITHDRAWALS.

      11.1 TRANSFER.

      A. The term  "Transfer,"  when used in this  Article 11 with  respect to a
Unit,  shall be deemed to refer to a  transaction  by which the General  Partner
purports  to assign all or any part of its General  Partner  Interest to another
Person or by which a Limited  Partner  purports to assign all or any part of its
Limited  Partner  Interest to another  Person.  The term "Transfer" when used in
this Article 11 does not include any exchange of L.P. Units for shares of Common
Stock pursuant to the Exchange Rights Agreement.

      B. No  Partnership  Interest  shall be  Transferred,  in whole or in part,
except in accordance with the terms and conditions set forth in this Article 11.
Any  Transfer  or  purported  Transfer  of a  Partnership  Interest  not made in
accordance with this Article 11 shall be null and void.

      11.2 TRANSFER OF THE COMPANY'S PARTNERSHIP INTERESTS.

      A. The General Partner may not withdraw as General Partner or transfer its
General Partner  Interest or Limited  Partner  Interest unless (i) the L.P. Unit
Majority (excluding L.P. Units held by the Company) consents to such Transfer or
withdrawal,  or (ii) such Transfer is to an entity which is  wholly-owned by the
Company and is a Qualified REIT Subsidiary under Section 856(i) of the Code.

      B. In the event the  General  Partner  withdraws  as  General  Partner  in
accordance with Section 11.2A,  the General  Partner's  General Partner Interest
shall immediately be converted into a Limited Partner Interest.

      11.3 LIMITED PARTNERS' RIGHTS TO TRANSFER.

      A.  Subject to the  provisions  of this Section  11.3,  a Limited  Partner
(other than the Company) may, without the consent of the General Partner:

           (a) if such Limited  Partner is a partnership or a limited  liability
      company, Transfer such Limited Partner's L.P. Units to any partner of such
      Limited Partner or any member of such limited liability company;

                                      -37-
<PAGE>

           (b) Transfer such Limited  Partner's  L.P. Units to any other Limited
      Partner; and

           (c)  pledge  such  Limited  Partner's  L.P.  Units  to any  financial
      institution  as collateral for any loan with respect to which such Limited
      Partner is personally liable.

      B. Subject to the  provisions of this Section 11.3, a Limited  Partner may
Transfer any of such Limited Partner's L.P. Units, other than in accordance with
Section 11.3A,  only with the prior written consent of the General Partner which
may be withheld in its sole discretion.

      C.  If  a  Limited  Partner  is  subject  to  Incapacity,   the  executor,
administrator,  trustee,  committee,  guardian,  conservator or receiver of such
Limited Partner's estate shall have all of the rights of a Limited Partner,  but
not more rights than those enjoyed by other Limited Partners, for the purpose of
settling  or  managing  the estate and such power as the  Incapacitated  Limited
Partner  possessed  to  Transfer  all or any part of his or its  interest in the
Partnership.  The Incapacity of a Limited Partner,  in and of itself,  shall not
dissolve or terminate the Partnership.

      D. No Transfer by a Limited  Partner of its L.P.  Units may be made to any
Person if (i) in the  opinion of legal  counsel  for the  Partnership,  it would
result  in  the  Partnership  being  treated  as  an  association  taxable  as a
corporation;  (ii) such Transfer  would cause the  Partnership  to become,  with
respect  to  any  Employee   Benefit  Plan  subject  to  Title  I  of  ERISA,  a
"party-in-interest"  (as defined in Section  3(14) of ERISA) or a  "disqualified
person" (as defined in Section 4975(c) of the Code);  (iii) such Transfer would,
in the opinion of legal  counsel for the  Partnership,  cause any portion of the
assets of the  Partnership  to  constitute  assets of any Employee  Benefit Plan
pursuant  to  Department  of Labor  Regulations  Section  2510.2-101;  (iv) such
Transfer  would  subject the  Partnership  to  regulation  under the  Investment
Company Act of 1940, the Investment  Advisors Act of 1940 or ERISA;  or (v) such
Transfer is a sale or exchange, and such sale or exchange would, when aggregated
with all other sales and exchanges during the 12-month period ending on the date
of the proposed Transfer, result in a Change of Control Transaction.

      E. Subject to the  foregoing  provisions  of Section 11.3 and the terms of
Section 12.2, a Limited Partner may transfer L.P. Units to an Affiliate and have
such Affiliate become a Limited Partner.

      In addition to the conditions set forth in Sections 11.3D,  11.4, and 12.2
any Transfer pursuant to this Article 11 is subject to the following conditions:

                (1) unless such  Transfer is being made pursuant to an effective
registration statement under the Securities Act, or pursuant to Rule 144 or Rule
144A thereunder, the transferring Limited Partner shall deliver to the Company a
notice  with  respect  to the  proposed  transfer,  together  with an opinion of
counsel in form and substance  satisfactory to the General  Partner  prepared by
counsel  reasonably

                                      -38-
<PAGE>

satisfactory  to the General Partner (which shall include,  without  limitation,
counsel to each of the Limited  Partners as of the date  hereof),  to the effect
that an exemption from registration and qualification  under such Securities Act
is available;

                (2) the  transferring  Limited Partner and its transferee  shall
each  provide  a  certificate  to the  General  Partner,  in form and  substance
satisfactory  to the  General  Partner,  to the  effect  that  (i) the  proposed
transfer  will not be  effected  on or  through  (a) a United  States  national,
regional or local securities exchange,  (b) a foreign securities exchange or (c)
an interdealer  quotation  system that regularly  disseminates  firm buy or sell
quotations by identified brokers or dealers (including,  without limitation, the
Nasdaq) by electronic  means or otherwise,  and (ii) it is not, and the proposed
transfer  will  not be made by,  through  or on  behalf  of,  (a) a  Person  who
regularly quotes equity interests in the Partnership, such as a broker or dealer
making a market in  equity  interests  in the  Partnership  or (b) a Person  who
regularly makes available to the public (including customers or subscribers) bid
or offer quotes with respect to equity  interests in the  Partnership and stands
ready to effect buy or sell  transactions  at the quoted prices for itself or on
behalf of others; PROVIDED, HOWEVER, that such certificate shall not be required
for any transfer in connection with a registered public offering;

                (3) the  transferee  must be a United  States Person for federal
income tax purposes; and

                (4) such transfer must not cause the Partnership to terminate or
lose its status as a partnership for tax purposes.

      F. If it shall become unlawful for any Limited Partner to continue to hold
some or all of the L.P.  Units  held by such  Limited  Partner,  or by reason of
legal or regulatory restrictions the cost to such Limited Partner to continue to
hold  such  L.P.  Units (in  relation  to the  value of such L.P.  Units to such
Limited  Partner)  has,  in the  reasonable  judgment of such  Limited  Partner,
significantly  increased,  such Limited  Partner may, at any time  following the
date three  business  days after the  delivery  by such  Limited  Partner to the
General Partner a notice of the existence of any such restriction,  Transfer all
or any  portion  of the L.P.  Units  held by such  Limited  Partner  free of any
restrictions  imposed  under  this  Agreement  (other  than  those  restrictions
required by federal or state laws,  including  securities,  and tax,  laws,  and
subject to the prospective  transferee meeting the requirements of Section 12.2,
and provided  that the  transferee  Limited  Partner  shall hold its L.P.  Units
subject to all of the terms of this Agreement); but only if such Limited Partner
cannot then exercise its Exchange Rights or Put Rights for cash, and the Company
has  notified  the Limited  Partner that the Company will not register for offer
and sale all shares of Common  Stock  issued upon the  exercise of the  Exchange
Rights within 90 days. In  connection  therewith,  the Company shall assist such
Limited  Partner  in  disposing  of the L.P.  Units  held by it in a prompt  and
orderly manner, and (at the request of such Limited Partner) make available (and
authorize such Limited Partner to make available through the Company)  financial
and other  information  concerning the Company and its Subsidiaries  (including,
without  limitation,  the  information  described  in  Rule  144A(d)(4))  to any
prospective  purchaser of

                                      -39-
<PAGE>

such L.P. Units (it being agreed that such prospective purchaser shall be either
an "accredited investor" within the meaning of Rule 501 (a) under the Securities
Act or a "qualified  institutional  buyer" within the meaning of Rule 144A(d)(1)
under such Act to the extent that such L.P. Units are "restricted securities" as
such term is  defined in Rule  144).  The  Company  may  require  that each such
prospective purchaser keep confidential,  pursuant to customary  confidentiality
requirements, any information received by it pursuant to this provision.

      11.4  SUBSTITUTED  LIMITED  PARTNERS.  The General  Partner shall have the
right to consent to the  admission  of a  transferee  who  receives  L.P.  Units
pursuant to Section  11.3A,  C, or E, which  consent may be given or withheld by
the General Partner in its sole and absolute  discretion.  The General Partner's
failure or refusal to permit such  transferee  to become a  Substituted  Limited
Partner shall not give rise to any cause of action  against the  Partnership  or
any Partner.

      11.5  ASSIGNEES.  If  the  General  Partner,  in  its  sole  and  absolute
discretion, does not consent to the admission of any transferee as a Substituted
Limited  Partner,  as  described  in  Section  11.4,  such  transferee  shall be
considered  an Assignee for  purposes of this  Agreement.  An Assignee  shall be
deemed  to  have  had   assigned  to  it,  and  shall  be  entitled  to  receive
distributions  from the Partnership and the share of Net Income,  Net Losses and
any other Tax Items with respect to the L.P. Units assigned to such  transferee,
but shall not be deemed to be a holder of L.P. Units for any other purpose under
this Agreement,  and shall not be entitled to vote such L.P. Units in any matter
presented to the Limited  Partners  for a vote (such L.P.  Units being deemed to
have been voted on such matter in the same  proportion  as all other L.P.  Units
held by Limited Partners are voted). In the event the Assignee desires to make a
further assignment of any such L.P. Units, such Assignee shall be subject to all
of the  provisions  of this Article 11 to the same extent and in the same manner
as any Limited Partner desiring to make an assignment of L.P. Units.

      11.6 EFFECT OF  PROHIBITED  TRANSFER.  Any  transfer  made in violation of
Article 11 shall be null and void and of no force and effect.

      11.7 GENERAL PROVISIONS.

      A. No Limited  Partner may withdraw from the  Partnership  other than as a
result of a permitted  Transfer of all of such Limited  Partner' s L.P. Units in
accordance with this Article 11, or pursuant to the tender or exchange of all of
its L.P. Units pursuant to the exercise of Put Rights or Exchange Rights.

      B. Any  Limited  Partner  who shall  Transfer  all of its L.P.  Units in a
Transfer  permitted  pursuant  to this  Article  11 shall  cease to be a Limited
Partner upon the  admission of all Assignees of such L.P.  Units as  Substituted
Limited Partners.  Similarly,  any Limited Partner who shall Transfer all of its
L.P. Units pursuant to a tender or exchange of all of its L.P. Units pursuant to
the  exercise  of Put  Rights or  Exchange  Rights  shall  cease to be a Limited
Partner.

                                      -40-
<PAGE>


      C.  Without  the  consent  of the  General  Partner,  permitted  Transfers
pursuant to this Article 11 may be made  effective only as of the first day of a
Quarter.

      D. If any Partnership  Interest is transferred or assigned during the year
in compliance  with the  provisions of this Article 11, or redeemed  pursuant to
Section 8.7, or exchanged  pursuant to the Exchange Rights  Agreement on any day
other than the first day of a Partnership Year, the Net Income, Net Losses, each
item  thereof,  and all other Tax Items  attributable  to such interest for such
Partnership Year shall be divided and allocated  between the transferor  Partner
and the transferee Partner by taking into account their varying interests during
the Partnership  Year in accordance  with Section 706(d) of the Code,  using the
interim  closing  of the books  method.  Solely  for  purposes  of  making  such
allocations,  each of such items for the calendar month in which the Transfer or
assignment occurs shall be allocated to the transferee Partner, and none of such
items for the calendar  month in which an exchange  occurs shall be allocated to
the exchanging Partner,  provided,  however,  that the General Partner may adopt
such other  conventions  relating to allocations in connection  with  transfers,
assignments,  or exchanges as it determines  are necessary or  appropriate.  All
distributions of Available Cash  attributable to such L.P. Units with respect to
which  the  Partnership  Record  Date is  before  the  date  of  such  transfer,
assignment,  or  exchange  shall  be  made  to  the  transferor  Partner  or the
exchanging  Partner,  as the  case  may be,  and in the  case of a  Transfer  or
assignment  other  than  an  exchange,   all  distributions  of  Available  Cash
thereafter  attributable  to such  L.P.  Units  shall be made to the  transferee
Partner.

ARTICLE 12.     ADMISSION OF PARTNERS.

      12.1  ADMISSION OF SUCCESSOR  GENERAL  PARTNER.  A successor to all of the
General  Partner  Interest  pursuant  to Article 11 hereof who is proposed to be
admitted as a successor  General Partner shall be admitted to the Partnership as
the General  Partner,  effective upon the Transfer.  Any such  transferee  shall
carry on the business of the Partnership without dissolution.  In each case, the
admission  shall be subject  to the  successor  General  Partner  executing  and
delivering to the  Partnership  an acceptance of all of the terms and conditions
of this  Agreement,  the  Acquisition  Agreement,  and such other  documents  or
instruments  as may be  required  to effect the  admission.  In the case of such
admission on any day other than the first day of a Partnership  Year,  all items
attributable to the General Partner  Interest for such Partnership Year shall be
allocated  between  the  transferring  General  Partner  and such  successor  as
provided in Section 11.6D.

      12.2 ADMISSION OF ADDITIONAL AND SUBSTITUTED LIMITED PARTNERS.

      A. A  Person  who  makes a  Capital  Contribution  to the  Partnership  in
accordance  with  this  Agreement  after  the  Effective  Date  and a  Permitted
Transferee  pursuant to Article 11 shall be admitted  to the  Partnership  as an
Additional Limited Partner or a Substituted Limited Partner only upon furnishing
to the General  Partner (i) evidence of acceptance in form  satisfactory  to the
General  Partner of all of the terms and  conditions  of this  Agreement and the
Acquisition  Agreement,  including,  without  limitation,  the power of attorney
granted in Section 2.4 hereof and (ii) such other

                                      -41-
<PAGE>


documents or  instruments  as may be required in the  discretion  of the General
Partner in order to effect such  Person's  admission  as an  Additional  Limited
Partner.

      B.  Notwithstanding  anything to the  contrary in this  Section  12.2,  no
Person  shall be  admitted as an  Additional  Limited  Partner or a  Substituted
Limited Partner without the consent of the General Partner, which consent may be
given or withheld in the General  Partner's  sole and absolute  discretion.  The
admission  of any  Person as an  Additional  Limited  Partner  or a  Substituted
Limited  Partner shall become  effective on the date upon which the name of such
Person is recorded on the books and records of the  Partnership,  following  the
consent of the General Partner to such admission.

      C. If any Additional Limited Partner is admitted to the Partnership on any
day other than the first day of a Partnership Year, then Net Income, Net Losses,
each other Tax Item and all other items  allocable  among Partners and Assignees
for such  Partnership  Year shall be  allocated  among such  Additional  Limited
Partner  and all other  Partners  and  Assignees  by taking into  account  their
varying  interests during the Partnership Year in accordance with Section 706(d)
of the Code, using the interim closing of the books method.  Solely for purposes
of making such  allocations,  each of such items for the calendar month in which
an admission of any Additional  Limited  Partner occurs shall be allocated among
all of the Partners and Assignees,  including such Additional  Limited  Partner.
All distributions of Available Cash with respect to which the Partnership Record
Date is before the date of such  admission  shall be made solely to Partners and
Assignees,  other than the Additional Limited Partner,  and all distributions of
Available  Cash  thereafter  shall be made to all of the Partners and Assignees,
including such Additional Limited Partner.

      D. A transferee who has been admitted as a Substituted  Limited Partner or
an  Additional  Limited  Partner  shall  have all the  rights  and powers and be
subject to all the  restrictions and liabilities of a Limited Partner under this
Agreement.

      12.3 AMENDMENT OF AGREEMENT AND  CERTIFICATE OF LIMITED  PARTNERSHIP.  For
the admission to the Partnership of any Partner,  the General Partner shall take
all steps  necessary and  appropriate  under the Act to amend the records of the
Partnership  and, if necessary,  to prepare as soon as practical an amendment of
this  Agreement  (including an amendment of Appendix I) and, if required by law,
shall prepare and file an amendment to the  Certificate and may for this purpose
exercise the power of attorney granted pursuant to Section 2.4 hereof.

ARTICLE 13.     DISSOLUTION, LIQUIDATION AND TERMINATION.

      13.1 DISSOLUTION.  The Partnership shall not be dissolved by the admission
of  Substituted  Limited  Partners  or  Additional  Limited  Partners  or by the
admission of a successor  General  Partner in accordance  with the terms of this
Agreement.  In the event of the withdrawal of the General Partner, any successor
General Partner shall continue the business of the Partnership.  The Partnership
shall dissolve,  and its affairs

                                      -42-
<PAGE>

shall be  wound  up,  only  upon  the  first  to  occur of any of the  following
("Liquidating Events"):

      (i)  the expiration of its term as provided in Section 2.5 hereof;

      (ii) an event of withdrawal of the General Partner,  as defined in the Act
(other than an event of bankruptcy),  unless, within 90 days after such event of
withdrawal a majority in interest of the remaining  Partners agree in writing to
continue the business of the Partnership and to the appointment, effective as of
the date of withdrawal, of a successor General Partner;

      (iii)from and after the date of this Agreement  through December 31, 2048,
an election to dissolve the Partnership  made by the General  Partner,  with the
Consent of Limited Partners holding 66-2/3% or more of the L.P.
Units (including L.P. Units held by the Company);

      (iv) on or after January 1, 2049, an election to dissolve the  Partnership
made by the General Partner, in its sole and absolute discretion;

      (v) entry of a decree of judicial  dissolution of the Partnership pursuant
to the provisions of the Act;

      (vi) the sale of all or substantially  all of the assets and properties of
the Partnership;

      (vii)a  final  and  non-appealable  judgment  is  entered  by a  court  of
competent jurisdiction ruling that the General Partner is bankrupt or insolvent,
or a final and  non-appealable  order  for  relief is  entered  by a court  with
appropriate  jurisdiction  against the General  Partner,  in each case under any
federal or state  bankruptcy or  insolvency  laws as now or hereafter in effect,
unless  prior  to the  entry  of such  order or  judgment  all of the  remaining
Partners agree in writing to continue the business of the Partnership and to the
appointment, effective as of a date prior to the date of such order or judgment,
of a substitute General Partner.

      13.2 WINDING UP.

      A. Upon the  occurrence  of a Liquidating  Event,  the  Partnership  shall
continue solely for the purposes of winding up its affairs in an orderly manner,
liquidating its assets, and satisfying the claims of its creditors and Partners.
No Partner shall take any action that is inconsistent  with, or not necessary to
or appropriate  for, the winding up of the  Partnership's  business and affairs.
The General Partner, or, in the event there is no remaining General Partner, any
Person  elected by Limited  Partners  holding at least a majority of the Limited
Partnership  Interests (the General  Partner or such other Person being referred
to herein as the "Liquidator"),  shall be responsible for overseeing the winding
up and  dissolution  of the  Partnership  and  shall  take full  account  of the
Partnership's  liabilities  and property and the  Partnership  property shall be
liquidated as promptly as is consistent  with  obtaining the fair value thereof,
and the

                                      -43-
<PAGE>


proceeds  therefrom (which may, to the extent determined by the General Partner,
include shares of beneficial  interest or other securities of the Company) shall
be applied and distributed in the following order:

           (i) First,  to the payment and discharge of all of the  Partnership's
      debts and liabilities to creditors other than the Partners;

           (ii) Second, to the payment and discharge of all of the Partnership's
      debts and liabilities to the General Partner;

           (iii)Third, to the payment and discharge of all of the
      Partnership's debts and liabilities to the other Partners;

           (iv)  Fourth,  to the General  Partner  and  Limited  Partners to the
      extent of and in  accordance  with the positive  balances in their Capital
      Accounts,  after giving effect to all  contributions,  distributions,  and
      allocations for all periods; and

           (v)  The  balance,  if  any,  to  the  Partners  according  to  their
      Percentage Interests.

The  General  Partner  shall not  receive any  additional  compensation  for any
services performed pursuant to this Article 13.

      B.  Notwithstanding  the  provisions of Section 13.2A hereof which require
liquidation  of the  assets  of the  Partnership,  but  subject  to the order of
priorities set forth therein, if prior to or upon dissolution of the Partnership
the  Liquidator  determines  that  an  immediate  sale  of  part  or  all of the
Partnership's  assets  would be  impractical  or would  cause  undue loss to the
Partners,  the Liquidator may, in its sole and absolute discretion,  defer for a
reasonable  time the  liquidation of any asset except those necessary to satisfy
liabilities of the Partnership (including to those Partners as creditors) and/or
distribute  to the  Partners,  in lieu of cash,  as  tenants  in  common  and in
accordance with the provisions of Section 13.2A hereof,  undivided  interests in
such  Partnership  assets as the Liquidator  deems not suitable for liquidation.
Any such distributions in kind shall be made only if, in the good faith judgment
of the Liquidator,  such  distributions in kind are in the best interests of the
Partners,  and shall be subject to such  conditions  relating to the disposition
and  management  of such  properties  as the  Liquidator  deems  reasonable  and
equitable and to any  agreements  governing the operation of such  properties at
such time. The Liquidator  shall determine the fair market value of any property
distributed in kind using such reasonable method of valuation as it may adopt.

      C.  In the  discretion  of  the  Liquidator,  a pro  rata  portion  of the
distributions  that would  otherwise be made to the General  Partner and Limited
Partners pursuant to this Article 13 may be:

     (1)  distributed  to a trust  established  for the  benefit of the  General
     Partner and Limited  Partners for the purposes of  liquidating  Partnership
     assets,

                                      -44-
<PAGE>

     collecting  amounts owed to the  Partnership,  and paying any contingent or
     unforeseen  liabilities or  obligations  of the  Partnership or the General
     Partner arising out of or in connection with the Partnership. The assets of
     any such trust  shall be  distributed  to the  General  Partner and Limited
     Partners from time to time, in the reasonable discretion of the Liquidator,
     in the same  proportions  as the  amount  distributed  to such trust by the
     Partnership  would  otherwise have been  distributed to the General Partner
     and Limited Partners pursuant to this Agreement; or

           (2)  withheld  or  escrowed  to  provide  a  reasonable  reserve  for
      Partnership  liabilities  (contingent  or  otherwise)  and to reflect  the
      unrealized portion of any installment obligations owed to the Partnership,
      provided that such withheld or escrowed  amounts shall be  distributed  to
      the  General  Partner  and  Limited  Partners  in the  manner and order of
      priority set forth in Section 13.2A as soon as practicable.

      13.3  OBLIGATION TO CONTRIBUTE  DEFICIT.  In the event the  Partnership is
"liquidated" within the meaning Section 1.704-1(b)(2)(ii)(G) of the Regulations,
if any Partner's Adjusted  Contributions are less than zero (after giving effect
to all  contributions,  distributions,  and  allocations  for all Fiscal  Years,
including the Fiscal Year during which such  liquidation  occurs),  such Partner
shall  contribute  to the capital of the  Partnership  the amount  necessary  to
restore such Partner's  Capital Account to zero in compliance  with  Regulations
Section 1.704-1(b)(2(ii)(B)(3).

      13.4  RIGHTS OF LIMITED  PARTNERS.  Except as  otherwise  provided in this
Agreement,  each  Limited  Partner  shall  look  solely  to  the  assets  of the
Partnership for the return of its Adjusted Capital  Contributions and shall have
no right or power to  demand  or  receive  property  other  than  cash  from the
Partnership.  Except as otherwise provided in this Agreement, no Limited Partner
shall have  priority  over any other  Partner  as to the return of its  Adjusted
Capital Contributions, distributions, or allocations.

      13.5 NOTICE OF DISSOLUTION.  In the event a Liquidating Event occurs or an
event occurs that would,  but for the  provisions of an election or objection by
one or more Partners  pursuant to Section 13.1,  result in a dissolution  of the
Partnership,  the General  Partner  shall,  within 30 days  thereafter,  provide
written notice thereof to each of the Partners.

      13.6 TERMINATION OF PARTNERSHIP AND CANCELLATION OF CERTIFICATE OF LIMITED
PARTNERSHIP.  Upon the  completion  of the  liquidation  of the  Partnership'  s
assets, as provided in Section 13.2 hereof, the Partnership shall be terminated,
a certificate of  cancellation  shall be filed,  and all  qualifications  of the
Partnership as a foreign  limited  partnership in  jurisdictions  other than the
state of Delaware  shall be canceled and such other  actions as may be necessary
to terminate the Partnership shall be taken.

      13.7 REASONABLE  TIME FOR  WINDING-UP.  A reasonable time shall be allowed
for the orderly  winding-up of the business and affairs of the  Partnership  and
the

                                      -45-
<PAGE>

liquidation  of its assets  pursuant to Section 13.2 hereof in order to minimize
any losses otherwise attendant upon such winding-up,  and the provisions of this
Agreement  shall  remain  in effect  among the  Partners  during  the  period of
liquidation.

      13.8  WAIVER  OF  PARTITION.  Each  Partner  hereby  waives  any  right to
partition of the Partnership property.

      13.9 DEEMED  DISTRIBUTION AND  RECONTRIBUTION.  Notwithstanding  any other
provisions of this Article 13, in the event the Partnership is liquidated within
the meaning of Regulations Section 1.704-1(b)(2)(ii)(G) but no Liquidating Event
has  occurred,   the  Property  shall  not  be  liquidated,   the  Partnership's
liabilities shall not be paid or discharged, and the Partnership's affairs shall
not be wound up. Instead,  the Partnership  shall be deemed to have  distributed
the  Property in kind to the  Partners,  who shall be deemed to have assumed and
taken  subject to all  Partnership  liabilities,  all in  accordance  with their
respective Capital Accounts,  and if any Partner has an Adjusted Capital Account
Deficit  (after  giving  effect  to  all   contributions,   distributions,   and
allocations  for all Fiscal  Years,  including the Fiscal Year during which such
liquidation  occurs)  such  Partner  shall  contribute  to  the  capital  of the
Partnership  the amount  necessary to restore  such  deficit  balance to zero in
compliance  with   Regulations   Section   1.704-1(b)(2(ii)(B)(3).   Immediately
thereafter,  the Partners shall be deemed to have  recontributed the property in
kind to the Partnership, which shall be deemed to have assumed and taken subject
to all such liabilities.

ARTICLE 14.     AMENDMENT OF PARTNERSHIP AGREEMENT; MEETINGS.

      14.1 AMENDMENTS.

      A.  Amendments to this Agreement may be proposed by the General Partner or
by any Limited Partners (other than the Company) holding in the aggregate 25% or
more of the Partnership Interests.  Following such proposal, the General Partner
shall submit any proposed amendment to the Limited Partners. The General Partner
shall seek the written vote of the  Partners on the proposed  amendment or shall
call a meeting to vote  thereon and to transact any other  business  that it may
deem appropriate.  For purposes of obtaining a written vote, the General Partner
may require a response within a reasonable  specified time, but not less than 15
days,  and failure to respond in such time period shall  constitute a vote which
is  consistent  with the General  Partner's  recommendation  with respect to the
proposal.  Except as provided in Section 8.9,  13.1C,  14.1B,  14.1C or 14.1D, a
proposed  amendment shall be adopted and be effective as an amendment  hereto if
it is  approved by the  General  Partner and it receives  the Consent of Limited
Partners holding 50% or more of the Percentage Interests of the Limited Partners
(including Limited Partner Interests held by the Company).

      B.  Notwithstanding  any  provisions  of  Sections  8.9 and  14.1A  to the
contrary,  the General Partner shall have the power,  without the consent of the
Limited  Partners,

                                      -46-
<PAGE>


to amend this Agreement as may be required to facilitate or implement any of the
following purposes:

           (1) to add to the obligations of the General Partner or surrender any
      right or power  granted to the  General  Partner or any  Affiliate  of the
      General Partner for the benefit of the Limited Partners;

           (2)  to  reflect  the  admission,   substitution,   termination,   or
      withdrawal of Partners in accordance with this Agreement;

           (3) to set  forth  the  designations,  rights,  powers,  duties,  and
      preferences of the holders of any additional  Partnership Interests issued
      pursuant to Section 4.3 hereof;

           (4) to reflect a change that is of an inconsequential nature and does
      not adversely affect the Limited Partners in any material  respect,  or to
      cure any ambiguity,  correct or supplement any provision in this Agreement
      not inconsistent with law or with other provisions,  or make other changes
      with  respect to matters  arising  under this  Agreement  that will not be
      inconsistent with law or with the provisions of this Agreement; and

           (5) to satisfy any requirements,  conditions, or guidelines contained
      in any order,  directive,  opinion,  ruling or  regulation of a federal or
      state agency or contained in federal or state law.

The General Partner shall provide notice to the Limited Partners when any action
under this Section 14.1B is taken.

      C.  Notwithstanding  provision of Section 14.1A and 14.1B to the contrary,
this  Agreement  shall  not be  amended  without  the  Consent  of each  Partner
adversely  affected  if such  amendment  would (i)  convert a Limited  Partner's
interest in the  Partnership  into a General Partner  Interest;  (ii) modify the
limited  liability  of a Limited  Partner in a manner  adverse  to such  Limited
Partner;  (iii) alter rights of the Partner to receive distributions pursuant to
Article 5 or Article 13, or the  allocations  specified  in Article 6 (except as
permitted  pursuant to Article IV and Section 14.1B(3)  hereof);  (iv) cause the
termination  of the  Partnership  prior to the time set forth in Section  2.5 or
13.1;  or (v) amend this Section  14.1C.  Further,  no  amendment  may alter the
restrictions  on the  General  Partner' s authority  set forth in Section  13.1C
without the Consent specified in that section.

      14.2 MEETINGS OF THE PARTNERS.

      A. Meetings of the Partners may be called by the General Partner and shall
be called  upon the  receipt  by the  General  Partner  of a written  request by
Limited Partners (other than the Company) holding 25% or more of the Partnership
Interests.  The request shall state the nature of the business to be transacted.
Notice of any such  meeting  shall be given to all Partners not less than 7 days
nor more than 30 days prior

                                      -47-
<PAGE>

to the date of such  meeting.  Partners  may vote in  person or by proxy at such
meeting.  Whenever  the vote or Consent of the Limited  Partners is permitted or
required under this Agreement, such vote or Consent may be given at a meeting of
the Partners or may be given in  accordance  with the  procedure  prescribed  in
Section 14.1A hereof.  Except as otherwise expressly provided in this Agreement,
the  consent  of  holders  of a majority  of the  Percentage  Interests  held by
Partners  (including  Limited  Partnership  Interests held by the Company) shall
control.

      B. Any  action  required  or  permitted  to be taken at a  meeting  of the
Partners may be taken without a meeting if a written  consent  setting forth the
action so taken is signed  by a  majority  of the  Percentage  Interests  of the
Partners (or such other percentage as is expressly  required by this Agreement).
Such consent may be in one instrument or in several instruments,  and shall have
the same force and effect as a vote of a majority of the Percentage Interests of
the  Partners  (or  such  other  percentage  as is  expressly  required  by this
Agreement).  Such consent shall be filed with the General Partner.  An action so
taken shall be deemed to have been taken at a meeting held on the effective date
so certified.

      C. Each Limited Partner may authorize any Person or Persons to act for him
by proxy on all matters in which a Limited  Partner is entitled to  participate,
including  waiving  notice  of any  meeting,  or voting  or  participating  at a
meeting.   Every   proxy  must  be  signed  by  the   Limited   Partner  or  his
attorney-in-fact. No proxy shall be valid after the expiration of 11 months from
the date thereof unless  otherwise  provided in the proxy.  Every proxy shall be
revocable at the pleasure of the Limited  Partner  executing it, such revocation
to be  effective  upon the  Partnership's  receipt  of  written  notice  of such
revocation from the Limited Partner executing such proxy.

      D. Each meeting of the Partners shall be conducted by the General  Partner
or such other Person as the General  Partner may appoint  pursuant to such rules
for the conduct of the meeting as the General Partner or such other Person deems
appropriate.  Meetings  of  Partners  may be  conducted  in the same  manner  as
meetings  of the  shareholders  of the Company and may be held at the same time,
and as part of, meetings of the shareholders of the Company.

ARTICLE 15.     GENERAL PROVISIONS.

      15.1 ADDRESSES AND NOTICE. Any notice,  demand, request or report required
or permitted to be given or made to a Partner or Assignee  under this  Agreement
shall be in writing and shall be deemed  given or made when  delivered in person
or when sent by first  class  United  States  mail or by other  means of written
communication  to  the  Partner  or  Assignee  (including  electronic  mail  and
electronic facsimile transmission if delivery in that manner has been confirmed)
at the  address  set forth in  Appendix  I or such  other  address  of which the
Partner shall notify the General Partner in writing.

      15.2 TITLES AND  CAPTIONS.  All  article or section  titles or captions in
this Agreement are for  convenience  only. They shall not be deemed part of this
Agreement and in no way define, limit, extend or describe the scope or intent of
any provisions

                                      -48-
<PAGE>

hereof. Except as specifically provided otherwise,  references to "Articles" and
"Sections" are to Articles and Sections of this Agreement.

      15.3 PRONOUNS AND PLURALS.  Whenever the context may require,  any pronoun
used in this Agreement shall include the  corresponding  masculine,  feminine or
neuter forms,  and the singular form of nouns,  pronouns and verbs shall include
the plural and vice versa.

      15.4 FURTHER ACTION.  The parties shall execute and deliver all documents,
provide  all  information  and take or  refrain  from  taking  action  as may be
necessary or appropriate to achieve the purposes of this Agreement.

      15.5 BINDING EFFECT. This Agreement shall be binding upon and inure to the
benefit  of the  parties  hereto  and their  heirs,  executors,  administrators,
successors, legal representatives and permitted assigns.

      15.6  CREDITORS.  Other than as expressly set forth herein with respect to
the  Indemnitees,  none of the  provisions  of this  Agreement  shall be for the
benefit of, or shall be enforceable by, any creditor of the Partnership.

      15.7 WAIVER. No failure by any party to insist upon the strict performance
of any covenant,  duty,  agreement or condition of this Agreement or to exercise
any right or remedy  consequent upon a breach thereof shall constitute waiver of
any such breach or any other covenant, duty, agreement or condition.

      15.8 COUNTERPARTS.  This Agreement may be executed in counterparts, all of
which  together  shall  constitute  one agreement  binding on all of the parties
hereto,  notwithstanding  that  all  such  parties  are not  signatories  to the
original  or the  same  counterpart.  Each  party  shall  become  bound  by this
Agreement immediately upon affixing its signature hereto.

      15.9  APPLICABLE  LAW. This  Agreement  shall be construed and enforced in
accordance  with and  governed  by the laws of the  State of  Delaware,  without
regard to the principles of conflicts of laws thereof.

     15.10  INVALIDITY OF  PROVISIONS.  If any provision of this Agreement is or
becomes invalid, illegal or unenforceable in any respect, the validity, legality
and  enforceability  of the remaining  provisions  contained herein shall not be
affected thereby.

     15.11 ENTIRE AGREEMENT.  This Agreement  contains the entire  understanding
and agreement  among the Partners with respect to the subject  matter hereof and
supersedes any other prior written or oral  understandings  or agreements  among
them with respect thereto.

     15.12 GUARANTY BY THE COMPANY. The Company  unconditionally and irrevocably
guarantees to the Limited Partners the performance by the General Partner

                                      -49-
<PAGE>

of the General  Partner' s obligations  under this Agreement.  This guarantee is
exclusively for the benefit of the Limited  Partners and shall not extend to the
benefit any creditor of the Partnership.

                                      -50-

<PAGE>


      IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as of
the date first written above.



GENERAL PARTNER:

MISSION WEST PROPERTIES, A CALIFORNIA CORPORATION


By: /s/ Michael J. Anderson
   ------------------------                                      
   Michael J. Anderson
Its:  Vice President and Chief Operating Officer

LIMITED PARTNERS:

BERG & BERG ENTERPRISES, INC., A CALIFORNIA CORPORATION

By: /s/ Carl E. Berg
   ----------------------------                                      
    Carl E. Berg
Its:  President


 /s/ Thelmer Aalgaard
- --------------------------------
THELMER AALGAARD


/s/ Clyde J. Berg, Trustee
- -------------------------------
CLYDE J. BERG, TRUSTEE, 1981
KARA ANN BERG TRUST



 /s/ Michael L. Knapp
- -------------------------------
MICHAEL L. KNAPP


 /s/ Thelmer Aalgaard, Trustee
- -------------------------------
THELMER AALGAARD, TRUSTEE OF 
THE SONYA L. BERG TRUST


 /s/ Thelmer Aalgaard, Trustee
- --------------------------------
THELMER AALGAARD, TRUSTEE OF
THE SHERRI L. BERG TRUST




KONTRABECKI ASSOCIATES I, A CALIFORNIA LIMITED PARTNERSHIP


By: /s/ John T. Kontrabecki
   ------------------------------             
   John T. Kontrabecki
   Its: General Partner


TRIANGLE DEVELOPMENT COMPANY, A CALIFORNIA GENERAL PARTNERSHIP

By: Berg Venture I
Its:  General Partner

     By: /s/ John T. Kontrabecki                           
        ------------------------
        John T. Kontrabecki
        Its: General Partner


BERG VENTURE II, A CALIFORNIA LIMITED PARTNERSHIP

By: /s/ John T. Kontrabecki
   -------------------------                                       
   John T. Kontrabecki
Its:  General Partner


BACCARAT FREMONT DEVELOPERS, LLC, A CALIFORNIA LIMITED LIABILITY COMPANY

By: /s/ Michael L. Knapp
   -------------------------                                       
   Michael L. Knapp
Its:  Managing Member


BACCARAT CAMBRIAN, A CALIFORNIA GENERAL PARTNERSHIP

By: /s/ Carl E. Berg
   -------------------------                                            
   Carl E. Berg
Its:  General Partner


DE ANZA OFFICE PARTNERS, A CALIFORNIA GENERAL PARTNERSHIP

By: /s/ Carl E. Berg
   -------------------------                                            
   Carl E. Berg
Its:  General Partner



<PAGE>
<TABLE>
<CAPTION>


                                   APPENDIX I

         PARTNERS' [ADJUSTED] CONTRIBUTIONS AND PARTNERSHIP INTERESTS

=========================================================================================
  Name and                   Cash        Agreed       Total         LP       Percentage
   Address                Contributions Value of   Contribution    Units      Interest      
  of Partner                           Contributed
                                        Property                   


=========================================================================================
GENERAL PARTNER

<S>                                                             <C>             <C>
Mission West Properties                                                         10.91%
10050 Bandley Drive
Cupertino, CA 95014
=========================================================================================
LIMITED PARTNERS

Berg & Berg Enterprises,                                        4,542,121       30.7329%
Inc.,
10050 Bandley Drive
Cupertino, CA

Thelmer G. Aalgaard                                               302,567        2.0472%   
10050 Bandley Drive
Cupertino, CA 95014                                                       

Clyde J. Berg, Trustee                                            998,472        6.7559%
1981 Karen Ann Berg Trust
10050 Bandley Drive
Cupertino, CA 95014

Michael L. Knapp                                                  100,856        0.6824%
10050 Bandley Drive
Cupertino, CA 95014

Thelmer Aalgaard, Trustee                                         297,524        2.0136%
of the Sonya L. Berg Trust
10050 Bandley Drive
Cupertino, CA 95014

Thelmer, Aalgaard, Trustee                                        297,524        2.0136%
of the Sherri L. Berg Trust
10050 Bandley Drive
Cupertino, CA 95014

Triangle Development                                              482,911        3.2674%
2255 Campus Drive, #100
San Mateo, CA 94403

Berg Venture II                                                 1,243,653        8.4147%
10050 Bandley Drive
Cupertino, CA 95014

Baccarat Fremont                                                1,216,290        8.2296%
Developers, LLC
10050 Bandley Drive
Cupertino, CA 95014

Baccarat Cambrian                                               2,878,152       19.4740%
10050 Bandley Drive
Cupertino, CA 95014

DeAnza Office                                                     806,846        5.4593%
10050 Bandley Drive
Cupertino, CA 95014
</TABLE>

==========


* The Company's Cash  Contribution  shall be increased by all transaction  costs
paid  by the  Company  out of  the  Company  Cash  pursuant  to the  Acquisition
Agreement.


** To be  completed  upon  final  adjustment  of  accounts  at July 1,  1998 and
preparation of 1998 federal income tax return.


***   Upon contribution of additional properties by Carl E. Berg, he will
become an additional limited partner with 3,061,427 L.P. Units.



<PAGE>


                                   APPENDIX II



                      ALLOCATIONS OF PARTNERSHIP INTERESTS



1.    ALLOCATION OF NET INCOME AND NET LOSS.

      (a) NET INCOME.  Except as  otherwise  provided in this  Appendix  II, Net
Income (or items thereof) (other than Net Income,  or items thereof,  arising in
connection with a Terminating Capital  Transaction) for any fiscal year or other
applicable  period shall be allocated to the Partners in  accordance  with their
respective Percentage Interests.

      (b) NET LOSS.  Except as otherwise  provided in this Appendix II, Net Loss
(or items thereof) of the Partnership  for each fiscal year or other  applicable
period  shall be  allocated to the  Partners in  accordance  with the  Partners'
respective Percentage Interests.  Notwithstanding the preceding sentence, to the
extent  any Net Loss (or  items  thereof)  allocated  to a  Partner  under  this
subparagraph (b) would cause such Partner (hereinafter,  a "Restricted Partner")
to have an  Adjusted  Capital  Account  Deficit,  or  increase  the amount of an
existing  Adjusted Capital Account Deficit,  as of the end of the fiscal year or
other applicable period to which such Net Loss relates,  such Net Loss shall not
be allocated to such  Restricted  Partner and instead  shall be allocated to the
other Partner(s) (hereinafter,  the "Permitted Partners") pro rata in accordance
with each Permitted Partner's Percentage Interest.

      (c)  TERMINATING  CAPITAL  TRANSACTION;  LIQUIDATION.  Allocations  of Net
Income or Net Loss (or items thereof) in connection  with a Terminating  Capital
Transaction or Liquidation  of the  Partnership  shall first be made so that, to
the extent  possible,  each Partner's  Capital  Account balance is equal to such
Partner's  Adjusted  Contribution,  and the  remainder of such Net Income or Net
Loss (or items  thereof)  shall be allocated to the Partners in accordance  with
their  Percentage  Interests.  Notwithstanding  the preceding  sentence,  to the
extent  any Net Loss (or  items  thereof)  would be  allocated  to a  Restricted
Partner  under this  subparagraph  (c),  such Net Loss shall not be allocated to
such Restricted Partner and instead shall be allocated to the Permitted Partners
pro rata in accordance with each Permitted Partner's Percentage Interest.

      (d) RULES OF CONSTRUCTION.

           (1) CAPITAL  ACCOUNT  INCREASES.  For purposes of making  allocations
pursuant to subparagraph  1(c) of this Appendix II, a Partner's  Capital Account
balance  shall  be  deemed  to be  increased  by  such  Partner's  share  of any
Partnership  Minimum Gain and Partner Minimum Gain remaining at the close of the
fiscal period in respect of which such allocations are being made.

           (2)  CHANGE IN  PERCENTAGE  INTERESTS.  In the  event  any  Partner's
Percentage  Interest  changes  during a fiscal  year for any  reason,  including
without  limitation,  the Transfer of any interest in the  Partnership,  the tax
allocations  contained  in this  Appendix  II shall be applied as  necessary  to
reflect the varying interests of the Partners during such year.

2.    SPECIAL ALLOCATIONS.

      Notwithstanding  any  provisions  of paragraph 1 of this  Appendix II, the
following special allocations shall be made.

      (a) MINIMUM GAIN CHARGEBACK (NONRECOURSE LIABILITIES). Except as otherwise
provided in Section 1.704-2(f) of the Regulations, if there is a net decrease in
Partnership  Minimum Gain for any Partnership fiscal year, each Partner shall be
specially  allocated items of Partnership income and gain for such year (and, if
necessary,  subsequent  years) in an amount equal to such Partner's share of the
net decrease in Partnership  Minimum Gain to the extent  required by Regulations
Section  1.704-2(f).  The  items  to be so  allocated  shall  be  determined  in
accordance  with  Sections  1.704-2(f)  and  (j)(2)  of  the  Regulations.  This
subparagraph  2(a) is  intended  to  comply  with the  minimum  gain  chargeback
requirement  in  said  section  of the  Regulations  and  shall  be  interpreted
consistently therewith.  Allocations pursuant to this subparagraph 2(a) shall be
made in proportion to the  respective  amounts  required to be allocated to each
Partner pursuant hereto.

      (b) PARTNER  MINIMUM  GAIN  CHARGEBACK.  Except as  otherwise  provided in
Section 1.704-2(i)(4) of the Regulations,  if there is a net decrease in Partner
Minimum Gain attributable to a Partner  Nonrecourse Debt during any fiscal year,
each Partner who has a share of the Partner  Minimum Gain  attributable  to such
Partner  Nonrecourse Debt,  determined in accordance with Section 1.704- 2(i)(5)
of the Regulations, shall be specially allocated items of Partnership income and
gain for such year (and, if necessary,  subsequent  years) in an amount equal to
that  Partner's   share  of  the  net  decrease  in  the  Partner  Minimum  Gain
attributable  to such Partner  Nonrecourse  Debt to the extent and in the manner
required by Section 1.704-2(i) of the Regulations.  The items to be so allocated
shall be determined in accordance with Sections  1.704-2(i)(4) and (j)(2) of the
Regulations.  This subparagraph 2(b) is intended to comply with the minimum gain
chargeback  requirement  with respect to Partner  Nonrecourse  Debt contained in
said  Section   1.704-2(i)(4)  of  the  Regulations  and  shall  be  interpreted
consistently therewith.  Allocations pursuant to this subparagraph 2(b) shall be
made in proportion to the  respective  amounts  required to be allocated to each
Partner pursuant hereto.

      (c) QUALIFIED INCOME OFFSET. In the event a Partner unexpectedly  receives
any   adjustments,   allocations   or   distributions   described   in  Sections
1.704-1(b)(2)(ii)(d)(4),  (5) or (6) of the Regulations, and such Partner has an
Adjusted Capital Account Deficit,  items of Partnership  income (including gross
income) and gain shall be  specially  allocated to such Partner in an amount and
manner  sufficient to eliminate the Adjusted  Capital Account Deficit as quickly
as possible as required by the Regulations.  This  subparagraph 2(c) is intended
to constitute a "qualified income offset" under Section  1.704-1(b)(2)(ii)(d) of
the Regulations and shall be interpreted consistently therewith.

      (d) OTHER  CHARGEBACK OF IMPERMISSIBLE  NEGATIVE  CAPITAL ACCOUNT.  To the
extent any  Partner has an Adjusted  Capital  Account  Deficit at the end of any
Partnership  Year,  each such  Partner  shall be  specially  allocated  items of
Partnership  income  (including  gross  income)  and gain in the  amount of such
excess as quickly as  possible,  provided  that an  allocation  pursuant to this
paragraph  2(d) shall be made if and only to the extent that such Partner  would
have an Adjusted  Capital Account Deficit after all other  allocations  provided
for in this Appendix II have been  tentatively  made as if this  paragraph  2(d)
were not in the Agreement.

      (e) NONRECOURSE DEDUCTIONS.  Nonrecourse Deductions for any fiscal year or
other  applicable  period shall be allocated to the Partners in accordance  with
their respective Percentage Interests.

      (f) PARTNER NONRECOURSE DEDUCTIONS. Partner Nonrecourse Deductions for any
fiscal year or other  applicable  period with  respect to a Partner  Nonrecourse
Debt shall be specially allocated to the Partner that bears the economic risk of
loss  for  such  Partner   Nonrecourse   Debt  (as  determined   under  Sections
1.704-2(b)(4) and 1.704-2(i)(1) of the Regulations).

      (g)  INTENT  OF  ALLOCATIONS.  The  parties  intend  that  the  allocation
provisions of this Appendix II shall result in final Capital Account balances of
the Partners that  initially are equal to each Partner's  Adjusted  Contribution
and are then in proportion to the Partners' respective Percentage Interests,  so
that when  liquidating  distributions  are made in  accordance  with such  final
Capital Account balances under Section 13.2A(4) hereof,  such distributions will
be able to return to each  Partner its  Adjusted  Contribution  and then will be
made in proportion  to the Partners'  respective  Percentage  Interests.  To the
extent that such final Capital Account balances do not so reflect the provisions
of this Appendix II, income and loss of the Partnership for the current year and
future  years,  as computed  for book  purposes,  shall be  allocated  among the
Partners  so as to result  in final  Capital  Account  balances  reflecting  the
provisions of this Appendix II, and to the extent such  allocations  of items of
income  (including  gross  income)  and  deduction  do not  result in such final
Capital  Account  balances,  then,  income and loss of the Partnership for prior
open  years,  as  computed  for book  purposes  (or  items of gross  income  and
deduction of the  Partnership  for such years,  as computed  for book  purposes)
shall be reallocated  among the Partners  consistent  with the  foregoing.  This
subparagraph shall control  notwithstanding any reallocation of income, loss, or
items thereof, as computed for book purposes, by the Internal Revenue Service or
any other taxing authority.

      (h) SECTION 754  ADJUSTMENT.  To the extent an  adjustment to the adjusted
tax basis of any asset of the Partnership pursuant to Section 734(b) of the Code
or  Section  743(b) of the Code is  required  pursuant  to  Regulations  Section
1.704-1(b)(2)(iv)(m)  to be taken into account in determining  Capital Accounts,
the amount of such  adjustment  to the Capital  Accounts  shall be treated as an
item of gain (if the  adjustment  increases  the basis of the asset) or loss (if
the  adjustment  decreases  such basis) and such gain or loss shall be specially
allocated  among the  Partners in a manner  consistent  with the manner in which
each of their respective  Capital Accounts are required to be adjusted  pursuant
to such section of the Regulations.

      (i) GROSS INCOME  ALLOCATION.  There shall be  specially  allocated to the
General Partner an amount of Partnership income and gain during each Partnership
Year or portion thereof, before any other allocations are made hereunder,  which
is equal to the excess, if any, of the cumulative  distributions of cash made to
the General Partner under Section 7.3B hereof over the cumulative allocations of
Partnership  income and gain to the General Partner pursuant to this Section (i)
of this Appendix II.

3.    TAX ALLOCATIONS.

      (a) ITEMS OF  INCOME OR LOSS.  Except  as is  otherwise  provided  in this
Appendix II, an  allocation of  Partnership  Net Income or Net Loss to a Partner
shall be treated as an allocation to such Partner of the same share of each item
of  income,  gain,  loss,  deduction  and item of  tax-exempt  income or Section
705(a)(2)(B)  expenditure  (or item  treated  as such  expenditure  pursuant  to
Regulations  Section  1.704-1(b)(2)(iv)(i))  ("Tax  Items")  that is taken  into
account in computing Net Income or Net Loss.

      (b) SECTION 1245/1250  RECAPTURE.  If any portion of gain from the sale of
Partnership  assets is treated as gain which is ordinary income by virtue of the
application of Code Sections 1245 or 1250 ("Affected Gain"),  then such Affected
Gain shall be  allocated  among the  Partners  in the same  proportion  that the
depreciation and amortization  deductions  giving rise to the Affected Gain were
allocated.  This  subparagraph 3(b) shall not alter the amount of Net Income (or
items thereof)  allocated  among the Partners,  but merely the character of such
Net Income (or items thereof).  For purposes  hereof,  in order to determine the
proportionate  allocations of depreciation and amortization  deductions for each
fiscal  year or  other  applicable  period,  such  deductions  shall  be  deemed
allocated  on the same  basis  as Net  Income  and Net Loss for such  respective
period.

      (c) PRECONTRIBUTION GAIN. The Partnership may elect the traditional method
of allocation  contained in Section 1.704- 3(b) of the  Regulations to take into
account any  variation  between the adjusted  basis and the fair market value of
the   Initial   Contributed   Property   at  the   time   of  the   contribution
("Precontribution  Gain") on a  Property-by-Property  basis.  By executing  this
Agreement, each Partner hereby agrees to report income, gain, loss and deduction
on such Partner's  federal income tax return in a manner that is consistent with
the use of the  traditional  method of  allocation  with  respect to the Initial
Contributed Property.  With respect to any Contributed Property, the Partnership
shall use any permissible method contained in the Regulations  promulgated under
Section  704(c)  of the  Code  selected  by the  General  Partner,  in its  sole
discretion,  to take into account any  variation  between the adjusted  basis of
such  asset  and the  fair  market  value  of such  asset  as of the time of the
contribution.  Each  Partner  hereby  agrees to report  income,  gain,  loss and
deduction on such  Partner's  federal  income tax return in a manner  consistent
with the method used by the Partnership.

      (d) ALLOCATIONS  RESPECTING SECTION 704(C) AND REVALUATIONS.  If any asset
has a Gross Asset Value which is different from the Partnership's adjusted basis
for such asset for  federal  income tax  purposes  because the  Partnership  has
revalued such asset pursuant to Regulations  Section  1.704-1(b)(2)(iv)(f),  the
allocations  of Tax Items shall be made in  accordance  with the  principles  of
Section  704(c) of the Code and the  Regulations  and the methods of  allocation
promulgated thereunder,  provided, however, that the General Partner shall elect
with respect to each Initial Contributed Property, to allocate the income, gain,
loss and deduction with respect to such Property using the "traditional  method"
described in Regulations  Section  1.704-3(b) unless the majority of the Limited
Partners affected thereby otherwise instruct the General Partner.  The intent of
this Section 3(d) and Section 3(c) above is that each Partner who contributed to
the capital of the Partnership a Contributed Property will bear, through reduced
allocations of depreciation,  increased  allocations of gain or other items, the
tax detriments  associated with any Precontribution  Gain. This Section 3(d) and
Section 3(c) are to be interpreted consistently with such intent.

      (e) EXCESS  NONRECOURSE  LIABILITY  SAFE HARBOR.  Pursuant to  Regulations
Section  1.752-3(a)(3),  solely  for  purposes  of  determining  each  Partner's
proportionate share of the "excess  nonrecourse  liabilities" of the Partnership
(as defined in  Regulations  Section  1.752-3(a)(3)),  the Partners'  respective
interests in  Partnership  profits shall be  determined in accordance  with each
Partner's  Percentage  Interest;  provided,  however,  that each Partner who has
contributed  an  asset to the  Partnership  shall be  allocated,  to the  extent
possible,  a share of "excess nonrecourse  liabilities" of the Partnership which
results in such Partner being  allocated  nonrecourse  liabilities  in an amount
which is at least equal to the amount of income  pursuant  to Section  704(c) of
the Code and the Regulations promulgated thereunder (the "Liability Shortfall").
In the event  there is an  insufficient  amount of  nonrecourse  liabilities  to
allocate  to each  Partner  an amount of  nonrecourse  liabilities  equal to the
Liability Shortfall, then an amount of nonrecourse liabilities in proportion to,
and to the  extent  of,  the  Liability  Shortfall  shall be  allocated  to each
Partner.

      (f)  REFERENCES TO  REGULATIONS.  Any reference in this Appendix II or the
Agreement to a provision of proposed and/or temporary  Regulations shall, in the
event  such  provision  is  modified  or  renumbered,  be deemed to refer to the
successor  provision as so modified or  renumbered,  but only to the extent such
successor  provision  applies to the Partnership  under the effective date rules
applicable to such successor provision.

      (g) SUCCESSOR PARTNERS.  For purposes of this Appendix II, a transferee of
a Partnership  Interest  shall be deemed to have been  allocated the Net Income,
Net Loss and other items of Partnership income, gain, loss, deduction and credit
allocable to the  transferred  Partnership  Interest that  previously  have been
allocated to the transferor Partner pursuant to this Agreement.

      (h) LIMITATION TO PRESERVE REIT STATUS.  Notwithstanding  anything else in
this  Agreement,  to the extent that the amount paid,  credited,  distributed or
reimbursed  by the  Partnership  or any  Partners  to, for or with  respect  any
Partner that is a REIT ("REIT Partner") or its officers, directors, employees or
agents,  whether  as  a  reimbursement,  fee,  expense  or  indemnity  (a  "REIT
Payment"),  would  constitute  gross  income to the REIT Partner for purposes of
Section 856 (c)(2) or Section 856(c)(3) of the Code, then,  notwithstanding  any
other provision of this Agreement, the amount of such REIT Payments, as selected
by  the  General  Partner  in its  discretion  from  among  items  of  potential
distribution,  reimbursement,  fees, expenses and indemnities,  shall be reduced
for any Fiscal Year so that the REIT  Payments,  as so reduced,  to, for or with
respect to such REIT Partner shall not exceed the lesser of:

           (i)  an  amount  equal  to the  excess,  if  any,  of  (x)  four  and
nine-tenths percent (4.9%) of the REIT Partner total gross income (but excluding
the  amount of any REIT  Payments)  for the  Fiscal  Year that is  described  in
subsections  (A) through (H) of Section  856(c)(2)  over (y) the amount of gross
income  (within the meaning of Section  856(c)(2))  derived by the REIT  Partner
from  sources  other than those  described  in  subsections  (A)  through (H) of
Section 856(c)(2) (but not including the amount of any REIT Payments); or

           (ii) an amount  equal to the  excess,  if any, of (x) 24% of the REIT
Partner's total gross income (but excluding the amount of any REIT Payments) for
the Fiscal  Year that is  described  in  subsections  (A) through (I) of Section
856(c)(3)  over (y) the amount of gross  income  (within  the meaning of Section
856(c)(3))  derived by the REIT Partner from sources other than those  described
in  subsections  (A) through (I) of Section  856(c)(3)  (but not  including  the
amount of any REIT Payments);

PROVIDED,  HOWEVER,  that REIT  payments  in excess of the  amounts set forth in
clauses  (i) and (ii) above may be made if the General  Partner,  as a condition
precedent,  obtains an opinion of tax  counsel  that the  receipt of such excess
amounts shall not adversely  affect the REIT  Partner's  ability to qualify as a
REIT.  To the extent  that REIT  Payments  may not be made in a Fiscal Year as a
consequence  of the  limitations  set  forth in this  Section  3(h),  such  REIT
Payments  shall  carry over and shall be  treated  as  arising in the  following
Fiscal Year.  Nothing in this  Section 3(h) shall permit the General  Partner to
allocate  income of the  Partnership to any Partner in excess of the income that
would  otherwise  be  allocated  to it under  Article 6  without  regard to this
Section 3(h). The purpose of the  limitations  contained in this Section 3(h) is
to prevent any REIT  Partner from failing to qualify as a REIT under the Code by
reason  of  such  REIT  Partner's  share  of  items,  including   distributions,
reimbursements, fees, expenses or indemnities, receivable directly or indirectly
from the Partnership or the Partners, and this Section 3(h) shall be interpreted
and applied to effectuate such purpose.
<PAGE>



_____________________________________________________________________













                              Amended and Restated

                        Agreement of Limited Partnership

                                       of

                         Mission West Properties, L.P. I









                                  July 1, 1998

_____________________________________________________________________

<PAGE>


                               TABLE OF CONTENTS

                                                                Page
                                       
<TABLE>
<CAPTION>
<S>                                                              <C>
ARTICLE 1. Defined Terms..........................................2

  1.1 "Act".......................................................2
  1.2 "Acquisition Agreement".....................................2
  1.3 "Additional Limited Partner"................................2
  1.4 "Adjusted Capital Account Deficit"..........................2
  1.5 "Adjusted Contribution".....................................2
  1.6 "Affiliate".................................................3
  1.7 "Agreement".................................................3
  1.8 "Articles of Incorporation".................................3
  1.9 "Assignee"..................................................3
  1.10 "Available Cash"...........................................3
  1.11 "Berg Acquisition".........................................3
  1.12 "Berg Group"...............................................3
  1.13 "Berg Land Holdings".......................................4
  1.14 "Capital Account"..........................................4
  1.15 "Capital Contribution".....................................5
  1.16 "Capital Event"............................................5
  1.17 "Certificate"..............................................5
  1.18 "Change of Control Transaction"............................5
  1.19 "Charter"..................................................5
  1.20 "Code".....................................................5
  1.21 "Common Stock".............................................5
  1.22 "Common Stock Price".......................................6
  1.23 "Company"..................................................6
  1.24 "Consent"..................................................6
  1.25 "Depreciation".............................................6
  1.26 "Dividend Reinvestment Plan"...............................6
  1.27 "Effective Date"...........................................6
  1.28 "Employee Benefit Plan"....................................6
  1.29 "Entity"...................................................7
  1.30 "Equity Security"..........................................7
  1.31 "ERISA"....................................................7
  1.32 "Exchange Act".............................................7
  1.33 "Exchange Factor"..........................................7
  1.34 "Exchange Right"...........................................7
  1.35 "Exchange Rights Agreement"................................7
  1.36 "GAAP".....................................................7
  1.37 "General Partner"..........................................7
  1.38 "General Partner Interest".................................7
  1.39 "Gross Asset Value"........................................7
  1.40 "Immediate Family".........................................8
  1.41 "Incapacity" or "Incapacitated"............................8
  1.42 "Indemnitee"...............................................9
  1.43 "Initial Contributed Property".............................9
  1.44 "Lien".....................................................9
  1.45 "Limited Partner".........................................10
  1.46 "Limited Partner Interest"................................10
  1.47 "Liquidating Event".......................................10
  1.48 "Liquidator"..............................................10
  1.49 "L.P. Unit"...............................................10
  1.50 "L.P. Unit Majority"......................................10
  1.51 "Net Income" or "Net Loss"................................10
  1.52 "New Equity Financing Right"..............................11
  1.53 "Nonrecourse Deductions"..................................11
  1.54 "Nonrecourse Liabilities".................................11
  1.55 "Operating Partnership"...................................11
  1.56 "Partner".................................................11
  1.57 "Partner Minimum Gain"....................................11
  1.58 "Partner Nonrecourse Debt"................................11
  1.59 "Partner Nonrecourse Deductions"..........................11
  1.60 "Partnership".............................................12
  1.61 "Partnership Interest"....................................12
  1.62 "Partnership Minimum Gain"................................12
  1.63 "Partnership Record Date".................................12
  1.64 "Partnership Year"........................................12
  1.65 "Pending Development Projects"............................12
  1.66 "Partnership Interest"....................................12
  1.67 "Permitted Partners"......................................12
  1.68 "Permitted Transferee"....................................12
  1.69 "Person"..................................................12
  1.70 "Precontribution Gain"....................................12
  1.71 "Put Rights"..............................................12
  1.72 "Protective Provisions Expiration Date"...................13
  1.73 "Quarter".................................................13
  1.74 "Regulations".............................................13
  1.75 "REIT"....................................................13
  1.76 "REIT Requirements".......................................13
  1.77 "Restricted Partner"......................................13
  1.78 "SEC".....................................................13
  1.79 "Securities Act"..........................................13
  1.80 "Stock Option Plan".......................................13
  1.81 "Subsidiary"..............................................13
  1.82 "Substituted Limited Partner".............................13
  1.83 "Tax Items"...............................................13
  1.84 "Terminating Capital Transaction".........................14
  1.85 "Total Market Capitalization".............................14
  1.86 "Transfer"................................................14
  1.87 "Unit"....................................................14
  1.88 "United States Person"....................................14
  1.89 "Voting Securities".......................................14

ARTICLE 2. Organizational Matters................................14

  2.1 Continuation...............................................14
  2.2 Name.......................................................14
  2.3 Registered Office and Agent; Principal Office..............15
  2.4 Power of Attorney..........................................15
  2.5 Term.......................................................16

ARTICLE 3. Purpose...............................................16

  3.1 Purpose and Business.......................................16
  3.2 Powers.....................................................17

ARTICLE 4. Capital Contributions.................................17

  4.1 Capital Contributions of the Partners......................17
  4.2 Additional Funds; Restrictions on Company..................17
  4.3 Issuance of Additional Partnership Interests; Admission
      of Additional Limited Partners.............................19
  4.4 Repurchase of Company Equity Securities....................19
  4.5 No Third Party Beneficiary.................................20
  4.6 No Interest; No Return.....................................20

ARTICLE 5. Distributions.........................................20

  5.1 Regular Distributions......................................20
  5.2 Qualification as a REIT....................................20
  5.3 Withholding................................................21
  5.4 Additional Partnership Interests...........................21
  5.5 Distributions Upon Liquidation.............................21

ARTICLE 6. Allocations...........................................21

ARTICLE 7. Management and Operation of Business..................21

  7.1 Management.................................................21
  7.2 Certificate of Limited Partnership.........................22
  7.3 Reimbursement of the General Partner and the Company.......23
  7.4 Outside Activities of the General Partner..................23
  7.5 Contracts with Affiliates..................................23
  7.6 Indemnification............................................24
  7.7 Liability of the General Partner...........................26
  7.8 Limited Partners' Right to Bring Derivative Lawsuits.......27
  7.9 Other Matters Concerning the General Partner...............27
  7.10 Title to Partnership Assets...............................27
  7.11 Reliance by Third Parties.................................28

ARTICLE 8. Rights and Obligations of Limited Partners............28

  8.1 Limitation of Liability....................................28
  8.2 Management of Business.....................................28
  8.3 Outside Activities of Limited Partners.....................29
  8.4 Return of Capital..........................................29
  8.5 Rights of Limited Partners Relating to the Partnership.....29
  8.6 Exchange Rights............................................30
  8.7 Put Rights.................................................30
  8.8 New Equity Financing Rights................................32
  8.9 Matters Requiring L.P. Unit Majority Approval..............32
  8.10 Approval of Certain Taxable Sales.........................33

ARTICLE 9. Books, Records, Accounting and Reports................33

  9.1 Records and Accounting.....................................33
  9.2 Fiscal Year................................................34

ARTICLE 10. Tax Matters..........................................34

  10.1 Preparation of Tax Returns................................34
  10.2 Tax Elections.............................................34
  10.3 Tax Matters Partner.......................................34
  10.4 Organizational Expenses...................................36
  10.5 Withholding...............................................36

ARTICLE 11. Transfers and Withdrawals............................37

  11.1 Transfer..................................................37
  11.2 Transfer of the Company's Partnership Interests...........37
  11.3 Limited Partners' Rights to Transfer......................37
  11.4 Substituted Limited Partners..............................40
  11.5 Assignees.................................................40
  11.6 Effect of Prohibited Transfer.............................41
  11.7 General Provisions........................................41

ARTICLE 12. Admission of Partners................................41

  12.1 Admission of Successor General Partner....................41
  12.2 Admission of Additional and Substituted Limited Partners..42
  12.3 Amendment of Agreement and Certificate of Limited 
       Partnership...............................................43

ARTICLE 13. Dissolution, Liquidation and Termination.............43

  13.1 Dissolution...............................................43
  13.2 Winding Up................................................44
  13.3 Obligation to Contribute Deficit..........................45
  13.4 Rights of Limited Partners................................46
  13.5 Notice of Dissolution.....................................46
  13.6 Termination of Partnership and Cancellation of 
       Certificate of Limited Partnership........................46
  13.7 Reasonable Time for Winding-Up............................46
  13.8 Waiver of Partition.......................................46
  13.9 Deemed Distribution and Recontribution....................46

ARTICLE 14. Amendment of Partnership Agreement; Meetings.........47

  14.1 Amendments................................................47
  14.2 Meetings of the Partners..................................48

ARTICLE 15. General Provisions...................................49

  15.1 Addresses and Notice......................................49
  15.2 Titles and Captions.......................................49
  15.3 Pronouns and Plurals......................................49
  15.4 Further Action............................................49
  15.5 Binding Effect............................................50
  15.6 Creditors.................................................50
  15.7 Waiver....................................................50
  15.8 Counterparts..............................................50
  15.9 Applicable Law............................................50
  15.10 Invalidity of Provisions.................................50
  15.11 Entire Agreement.........................................50
  15.12 Guaranty by the Company..................................50

</TABLE>

                                     - 1 -
<PAGE>


                              AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                         MISSION WEST PROPERTIES, L.P. I



     This Amended and Restated Agreement of Limited  Partnership of Mission West
Properties, L.P. I (this "Agreement"), dated as of July 1, 1998, is entered into
by and among  Mission  West  Properties,  Inc., a  California  corporation  (the
"Company" or the "General Partner") and the parties whose names are set forth on
Appendix I attached hereto (as it may be amended from time to time).

     WHEREAS,  the Partnership was organized  initially as Berg Family Partners,
L.P. and became a limited  partnership  pursuant to the Revised  Uniform Limited
Partnership  Act of the State of  Delaware  by filing a  certificate  of limited
partnership with the Secretary of State of the State of Delaware on December 22,
1997;

     WHEREAS,  since its  organization as a Delaware  limited  partnership,  the
Partnership  has been operated and managed by Berg Family  Partners LLC, as sole
general partner,  pursuant to the terms of the Agreement of Limited  Partnership
of Berg Family Partners, L.P. (the "Prior Agreement");

     WHEREAS, on July 1, 1998, the Partnership filed an amendment of certificate
of limited  partnership  with the  Secretary  of State of the State of  Delaware
changing the Partnerships name to Mission West Properties, L.P. I;

     Whereas,  pursuant to the terms of a Acquisition  Agreement dated as of May
14,  1998,  as amended  as of July 1, 1998 (the  "Acquisition  Agreement"),  the
Company  has  agreed  to  acquire  a  10.91%  general  partner  interest  in the
Partnership and to become the sole general  partner in the Partnership  upon the
satisfaction of certain conditions set forth in the Acquisition Agreement, which
now have been satisfied or waived by the parties thereto;

     WHEREAS,  Berg Family  Partners LLC and all of the limited  partners in the
Partnership  wish to admit  the  Company  as a  general  partner,  to amend  the
certificate of limited  partnership of the  Partnership to reflect the Company's
admission as a general partner,  and to amend and restate the Prior Agreement as
provided herein; and

     WHEREAS, upon the filing of the certificate of amendment of the certificate
of limited  partnership  of the  Partnership  with the Secretary of State of the
State of  Delaware,  Berg  Family  Partners  LLC  intends to resign as a general
partner and become a limited partner in the Partnership pursuant to the terms of
this Agreement.

     Now Therefore,  in consideration of the mutual covenants herein  contained,
and other valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties do hereby agree as follows:

ARTICLE 1. Defined Terms.

     The  following  definitions  shall be for all  purposes,  unless  otherwise
clearly  indicated to the contrary,  applied to the following terms used in this
Agreement.

     1.1 "Act" the Delaware  Revised Uniform Limited  Partnership Act, as it may
be amended from time to time, and any successor to such statute.

     1.2  "Acquisition  Agreement" means the agreement dated as of May 14, 1998,
as amended as of July 1, 1998,  among the  Partnership,  the other  partnerships
comprising  the  Operating  Partnership,  all of the partners  therein,  and the
Company  concerning  the  acquisition  of  the  Berg  Properties,  the  Acquired
Properties and the Pending  Development  Projects by the Operating  Partnership,
the Company's  investment in and admission to the Operating  Partnership as sole
general  partner,  and the rights and  options of the  limited  partners  in the
Operating  Partnership  to tender L.P.  Units or acquire  shares of Common Stock
under certain circumstances.

     1.3 "Additional Limited Partner" means a Person admitted to the Partnership
as a Limited Partner  pursuant to Section 4.3 hereof and who is shown as such on
the books and records of the Partnership.

     1.4 "Adjusted  Capital Account  Deficit" means with respect to any Partner,
the negative balance, if any, in such Partner's Capital Account as of the end of
any  relevant  fiscal year,  determined  after  giving  effect to the  following
adjustments:

     (a)  credit to such Capital  Account any portion of such  negative  balance
          which  such  Partner  (i) is treated  as  obligated  to restore to the
          Partnership pursuant to the provisions of Section 1.704-1(b)(2)(ii)(c)
          of the  Regulations,  or (ii) is deemed to be  obligated to restore to
          the  Partnership  pursuant to the  penultimate  sentences  of Sections
          1.704-2(g)(1) and 1.704-2(i)(5) of the Regulations; and

     (b)  debit  to  such  Capital  Account  the  items  described  in  Sections
          1.704-1(b)(2)(ii)(d)(4), (5) and (6) of the Regulations.

     1.5 "Adjusted  Contribution" means the Capital Contributions of any Partner
reduced by the total distributions to such Partner from Capital Events occurring
subsequent to the Closing Date under the Acquisition Agreement.  For purposes of
this Agreement,  the initial Capital  Contribution of the Company shall be equal
to [$35,200,000]  and the initial Adjusted  Contribution of each Limited Partner
shall be 

                                     - 2 -

<PAGE>
equal  to  the  value  of  the  Limited  Partner's  interest  in  the  Operating
Partnership as set forth in Appendix I of the Acquisition Agreement.

     1.6  "Affiliate"  means,  (a) with respect to any  individual  Person,  any
member of the  Immediate  Family of such Person or a trust  established  for the
benefit of such  member,  or (b) with respect to any Entity,  any Person  which,
directly  or  indirectly  through  one  or  more  intermediaries,  controls,  is
controlled by, or is under common control with, any such Entity.

     1.7  "Agreement"  means this  Amended  and  Restated  Agreement  of Limited
Partnership,  as originally executed and as amended,  modified,  supplemented or
restated from time to time, as the context requires.

     1.8 "Articles of Incorporation"  means the Articles of Incorporation of the
Company,  as  amended  and  restated  from  time to  time,  or the  articles  of
incorporation,  certificate  of  incorporation,  operating  agreement  of  other
Charter  instrument of any  corporation  or other entity which is a successor to
the Company by merger or consolidation.

     1.9  "Assignee"  means a Person  to whom one or more L.P.  Units  have been
transferred in a manner permitted under this Agreement, but who has not become a
Substituted Limited Partner, and who has the rights set forth in Section 11.5.

     1.10  "Available  Cash"  means  the  Partnership's  share of the  Operating
Partnership's  Available  Cash (as defined in the  Acquisition  Agreement)  with
respect to the applicable  period of measurement  (i.e., any period beginning on
the first day of the fiscal year, quarter or other period commencing immediately
after the last day of the fiscal year,  quarter or other  applicable  period for
purposes of the prior calculation of Available Cash for or with respect to which
a  distribution  has been made,  and ending on the last day of the fiscal  year,
quarter  or  other  applicable  period  immediately  preceding  the  date of the
calculation).  Notwithstanding  the foregoing,  Available Cash shall not include
any cash  received or  reductions  in  reserves,  nor shall the  calculation  of
Available Cash take into account any disbursements made or reserves established,
after commencement of the dissolution and liquidation of the Partnership.

     1.11  "Berg  Acquisition"  has the  meaning  set  forth in the  Acquisition
Agreement.

     1.12 "Berg Group" means Carl E. Berg,  Clyde J. Berg,  the members of their
respective  Immediate  Families,  and any Entity which is an Affiliate of either
Carl E. Berg or Clyde J. Berg, excluding the Partnership and the Company.

     1.13 "Berg Land  Holdings"  means  certain land held by members of the Berg
Group which the Operating  Partnership  may acquire under certain  circumstances
pursuant to the terms of the  Acquisition  Agreement  and the related  Berg Land
Holdings  

                                     - 3 -

<PAGE>
Option  Agreement  to be entered into by the parties  thereto  upon  approval of
certain transactions by the Company's shareholders..

     1.14  "Capital  Account"  means with  respect to any  Partner,  the Capital
Account maintained for such Partner in accordance with the following provisions:

     (a)  to each  Partner's  Capital  Account  there shall be credited (i) such
          Partner's  Initial  Adjusted  Contribution as of the effective date of
          this Agreement (ii) such Partner's Capital Contributions subsequent to
          the  Effective   Date  of  this   Agreement,   (iii)  such   Partner's
          distributive share of Net Income and any items in the nature of income
          or gain which are  specially  allocated  to such  Partner  pursuant to
          Sections 1 and 2 of Appendix II and (iv) the amount of any Partnership
          liabilities  assumed by such Partner or which are secured by any asset
          distributed to such Partner;

     (b)  to each  Partner's  Capital  Account  there  shall be debited  (i) the
          amount of cash and the Gross Asset Value of any  Property  distributed
          to such Partner pursuant to any provision of this Agreement, (ii) such
          Partner's distributive share of Net Losses and any items in the nature
          of expenses or losses  which are  specially  allocated to such Partner
          pursuant to  Sections 1 and 2 of Appendix  II, and (iii) the amount of
          any  liabilities of such Partner  assumed by the  Partnership or which
          are  secured  by  any  asset   contributed  by  such  Partner  to  the
          Partnership to the extent not assumed by the Partner; and

     (c)  in the event all or a portion of a Partnership Interest is transferred
          in accordance with the terms of this Agreement,  the transferee  shall
          succeed  to the  Capital  Account of the  transferor  to the extent it
          relates to the transferred Partnership Interest.

The foregoing  provisions and the other provisions of this Agreement relating to
the  maintenance  of Capital  Accounts  are  intended  to comply  with  Sections
1.704-1(b) and 1.704-2 of the Regulations,  and shall be interpreted and applied
in a manner consistent with such  Regulations.  In the event the General Partner
shall reasonably  determine that it is prudent to modify the manner in which the
Capital  Accounts,  or  any  debits  or  credits  thereto  (including,   without
limitation,  debits or credits  relating  to  liabilities  which are  secured by
contributed or distributed  assets or which are assumed by the Partnership,  the
General  Partner or any Limited  Partner)  are  computed in order to comply with
such Regulations, the General Partner may make such modification;  provided that
it does not have an adverse effect on the amounts  distributable  to any Partner
pursuant to Article 13 hereof upon the dissolution of the Partnership.

     1.15 "Capital  Contribution"  means, with respect to any Partner, any cash,
cash  equivalents  or the Gross  Asset  Value of  property  which  such  Partner
contributes or is deemed to contribute to the Partnership  pursuant to Article 4
hereof.

     1.16 "Capital Event" means any Partnership  transaction not in the ordinary
course of its  business,  including,  without  limitation,  distribution  to the
Partners  in  excess  

                                     - 4 -

<PAGE>
of  distributive  shares of  income,  principal  payments,
prepayments,  prepayment  penalties,  sales,  exchanges,  foreclosures  or other
dispositions of Property owned by the  Partnership,  recoveries of damage awards
and  insurance  proceeds  not  used  to  rebuild  (other  than  the  receipt  of
contributions  to  the  capital  of  the  Partnership  and  business  or  rental
interruption insurance proceeds not used to rebuild).

     1.17 "Certificate" means the Certificate of Limited Partnership relating to
the Partnership to be filed in the office of the Delaware Secretary of State, as
amended from time to time in accordance with the terms hereof and the Act.

     1.18  "Change of Control  Transaction"  shall mean (A) any  transaction  or
series of transactions  occurring after the Effective Date, in which all Limited
Partners in the Operating  Partnership  are legally  entitled to participate and
pursuant to which L.P. Units representing more than 50% of the total outstanding
L.P. Units of the Operating Partnership are purchased by a Person not controlled
by, in control of or under common control with the Company, any Affiliate of the
Company or any Affiliate of a Limited  Partner,  (B) the merger or consolidation
of the Partnership  with another entity (other than a merger or consolidation in
which the holders of L.P. Units of the Partnership immediately before the merger
or  consolidation  own  immediately  after the merger or  consolidation,  Voting
Securities  of the  surviving  or  acquiring  Entity  or a parent  party of such
surviving or acquiring  Entity,  possessing more than 50% of the voting power of
the surviving or acquiring  Entity or parent party) resulting in the exchange of
the  outstanding  L.P. Units of the  Partnership  for cash,  securities or other
property, or (C) any merger, sale, lease, license, exchange or other disposition
(whether in one  transaction or a series of related  transactions)  of more than
50% of the assets of the Partnership.

     1.19  "Charter"  has the  meaning  set  forth in Rule 405 of  Regulation  C
promulgated by the SEC under the Securities Act ("Rule 405").

     1.20 "Code"  means the  Internal  Revenue  Code of 1986,  as amended and in
effect  from  time  to  time,  as  interpreted  by  the  applicable  regulations
thereunder.  Any reference  herein to a specific section or sections of the Code
shall be deemed to include a reference to any corresponding  provision of future
law.

     1.21  "Common  Stock"  means a share of Common  Stock of the Company or any
shares of Voting  Securities  into which the Common Stock may be reclassified or
converted  or  for  which  shares  of  Common  Stock  may  be  exchanged  in any
transaction  made  applicable  or  available to all holders of Common Stock as a
class.

     1.22 "Common  Stock  Price"  means with  respect to a particular  valuation
event identified under this Agreement, the last reported sales price regular way
on such date or, in case no such  reported  sale takes  place on such date,  the
average of the reported  closing bid and asked prices  regular way on such date,
in either case on the American Stock Exchange,  the New York Stock Exchange,  or
if the  Common  Stock is not then  listed or  admitted  to  trading  on any such
exchange,  the Nasdaq or any comparable system on which the Common Stock is then
listed or  admitted  to trading or,

                                     - 5 -

<PAGE>
if not then listed or admitted to trading on any national  securities  exchange,
the Nasdaq or any  comparable  system for the  10-trading day period ending with
the last day preceding the date of the valuation event.

     1.23 "Company" means Mission West Properties, a California corporation, and
any successor to such corporation.

     1.24  "Consent"  means the consent or  approval  of a proposed  action by a
Partner given in accordance with Section 14.2 hereof.

     1.25 "Depreciation" means, with respect to any asset of the Partnership for
any fiscal year or other period,  the depreciation,  depletion,  amortization or
other cost  recovery  deduction,  as the case may be,  allowed or allowable  for
federal  income tax  purposes  in respect of such asset for such  fiscal year or
other period;  provided,  however,  that except as otherwise provided in Section
1.704-2 of the  Regulations,  if there is a  difference  between the Gross Asset
Value  (including the Gross Asset Value, as increased  pursuant to paragraph (d)
of the definition of Gross Asset Value) and the adjusted tax basis of such asset
at the  beginning  of such fiscal year or other  period,  Depreciation  for such
asset shall be an amount that bears the same ratio to the beginning  Gross Asset
Value  of  such  asset  as  the  federal  income  tax  depreciation,  depletion,
amortization  or other cost  recovery  deduction  for such  fiscal year or other
period  bears to the  beginning  adjusted  tax  basis of such  asset;  provided,
further, that if the federal income tax depreciation, depletion, amortization or
other  cost  recovery  deduction  for such asset for such  fiscal  year or other
period is zero, Depreciation of such asset shall be determined with reference to
the  beginning  Gross  Asset  Value of such asset  using any  reasonable  method
selected by the General Partner.

     1.26 "Dividend Reinvestment Plan" has the meaning set forth in Rule 405.

     1.27 "Effective Date" means the date of closing of the Berg Acquisition.

     1.28 "Employee Benefit Plan" has the meaning set forth in Rule 405.

     1.29  "Entity"  means  any  general   partnership,   limited   partnership,
corporation, joint venture, trust, business trust, real estate investment trust,
limited liability company, cooperative or association.

     1.30 "Equity Security" has the meaning set forth in Rule 405.

     1.31 "ERISA" means the Employee  Retirement Income Security Act of 1974, as
amended from time to time (or any corresponding provisions of succeeding laws).

     1.32 "Exchange Act" means the Securities Exchange Act of 1934, as amended.

                                     - 6 -

<PAGE>
     1.33  "Exchange  Factor" has the meaning set forth in the  Exchange  Rights
Agreement,  and is equal to the number of L.P. Units  exchangeable for one share
of Common Stock, from time to time, under the Exchange Rights Agreement.

     1.34  "Exchange  Right" has the  meaning set forth in the  Exchange  Rights
Agreement.

     1.35 "Exchange Rights  Agreement" means Exchange Rights Agreement among the
Company,  and each of the limited  partners of the  partnerships  comprising the
Operating Partnership.

     1.36 "GAAP" means United States generally accepted  accounting  principles,
as in effect from time to time.

     1.37 "General  Partner" means the general  partner of the  Partnership,  if
there is more than one general partner, all such general partners.

     1.38 "General  Partner  Interest" means a Partnership  Interest held by the
General Partner,  in its capacity as general partner. A General Partner Interest
may be expressed as a number of Units,  each of which shall  represent  the same
Percentage Interest in the Partnership as one L.P. Unit.

     1.39  "Gross  Asset  Value"  means,  with  respect  to  any  asset  of  the
Partnership, such asset's adjusted basis for federal income tax purposes, except
as follows:

     (a)  the initial Gross Asset Value of any asset contributed by a Partner to
          the  Partnership  shall be the gross fair market  value of such asset,
          without  reduction for liabilities,  as determined by the contributing
          Partner and the Partnership on the date of contribution thereof;

     (b)  if the General  Partner  reasonably  determines  that an adjustment is
          necessary or appropriate to reflect the relative economic interests of
          the Partners,  the Gross Asset Values of all Partnership  assets shall
          be adjusted in accordance with Sections  1.704-1(b)(2)(iv)(f)  and (g)
          of the Regulations to equal their respective gross fair market values,
          without  reduction for  liabilities,  as reasonably  determined by the
          General Partner, as of the following times:

          (1)  a  Capital   Contribution   (other  than  a  de  minimis  Capital
               Contribution)  to the Partnership by a new or existing Partner as
               consideration for a Partnership Interest; or

          (2)  the  distribution  by the Partnership to a Partner of more than a
               de minimis amount of Partnership  assets as consideration for the
               repurchase of a Partnership Interest; or

                                     - 7 -

<PAGE>
          (3)  the liquidation of the Partnership  within the meaning of Section
               1.704-1(b)(2)(ii)(g) of the Regulations;

     (c)  the  Gross  Asset  Values of  Partnership  assets  distributed  to any
          Partner shall be the gross fair market  values of such assets  (taking
          Section  7701(g)  of the Code  into  account)  without  reduction  for
          liabilities, as reasonably determined by the General Partner as of the
          date of distribution; and

     (d)  the Gross Asset Values of  Partnership  assets shall be increased  (or
          decreased) to reflect any  adjustments  to the adjusted  basis of such
          assets  pursuant to Sections 734(b) or 743(b) of the Code, but only to
          the extent that such adjustments are taken into account in determining
          Capital  Accounts  pursuant  to  Section  1.704-1(b)(2)(iv)(m)  of the
          Regulations  (as set forth in Appendix II);  provided,  however,  that
          Gross Asset  Values shall not be adjusted  pursuant to this  paragraph
          (d) to the extent that the General Partner reasonably  determines that
          an  adjustment  pursuant  to  paragraph  (b)  above  is  necessary  or
          appropriate  in  connection  with a transaction  that would  otherwise
          result in an adjustment pursuant to this paragraph (d).

     At all times,  Gross Asset  Values  shall be  adjusted by any  Depreciation
taken into  account  with  respect to the  Partnership's  assets for purposes of
computing Net Income and Net Loss.

     1.40 "Immediate  Family" means,  with respect to any Person,  such Person's
spouse, parents,  parents-in-law,  children, nephews, nieces, brothers, sisters,
brothers-in-law,  sisters-in-law, stepchildren, sons-in-law and daughters-in-law
or any trust solely for the benefit of any of the foregoing family members whose
sole beneficiaries include the foregoing family members.

     1.41  "Incapacity"  or  "Incapacitated"  means,  (i) as to  any  individual
Partner,  death,  total  physical  disability  or entry by a court of  competent
jurisdiction  adjudicating  him  incompetent to manage his person or his estate;
(ii) as to any  corporation  which is a Partner,  the filing of a certificate of
dissolution,  or its  equivalent,  for the  corporation or the revocation of its
charter;  (iii) as to any  partnership  which is a Partner,  the dissolution and
commencement of winding up of the partnership;  (iv) as to any estate which is a
Partner,  the  distribution  by the fiduciary of the estate's entire interest in
the  Partnership;  (v) as to any  trustee  of a trust  which is a  Partner,  the
termination of the trust (but not the substitution of a new trustee); or (vi) as
to any Partner, the bankruptcy of such Partner. For purposes of this definition,
bankruptcy  of a Partner  shall be deemed to have  occurred when (a) the Partner
commences a voluntary  proceeding seeking  liquidation,  reorganization or other
relief under any bankruptcy, insolvency or other similar law now or hereafter in
effect;  (b) the Partner is adjudged  as bankrupt or  insolvent,  or a final and
nonappealable  order for relief under any bankruptcy,  insolvency or similar law
now or hereafter in effect has been entered against the Partner; (c) the Partner
executes  and  delivers a general  assignment  for the benefit of the  Partner's
creditors;  (d) the  Partner  files an answer  or other  pleading  admitting  or
failing to contest the  material  allegations  of a petition  filed  against the
Partner in any proceeding of the nature  described in 

                                     - 8 -

<PAGE>
clause (b) above;  (e) the  Partner  seeks,  consents  to or  acquiesces  in the
appointment  of a trustee,  receiver or liquidator for the Partner or for all or
any substantial  part of the Partner's  properties;  (f) any proceeding  seeking
liquidation, reorganization or other relief of or against such Partner under any
bankruptcy,  insolvency  or other similar law now or hereafter in effect has not
been  dismissed  within  120  days  after  the  commencement  thereof;  (g)  the
appointment without the Partner's consent or acquiescence of a trustee, receiver
or liquidator has not been vacated or stayed within 90 days of such appointment;
or (h) an  appointment  referred  to in clause (g) which has been  stayed is not
vacated within 90 days after the expiration of any such stay.

     1.42  "Indemnitee"  means (i) any Person  made a party to a  proceeding  by
reason of (A) such Person's status as (1) the General  Partner,  (2) a director,
trustee or officer of the Partnership or the General Partner, or (3) a director,
trustee or officer of any other Entity,  each Person serving in such capacity at
the  request  of the  Partnership  or the  General  Partner,  or (B)  his or its
liabilities,  pursuant to a loan guarantee or otherwise, for any indebtedness of
the  Partnership  or any  Subsidiary  of  the  Partnership  (including,  without
limitation,  any  indebtedness  which the  Partnership  or any Subsidiary of the
Partnership has assumed or taken assets subject to); and (ii) such other Persons
(including  Affiliates of the General Partner or the Partnership) as the General
Partner  may  designate  from  time to time  (whether  before or after the event
giving rise to potential liability), in its sole and absolute discretion.

     1.43 "Initial Contributed  Property" means the Properties as defined in the
Acquisition Agreement.

     1.44 "Lien" means,  with respect to any asset of the  Partnership,  (i) any
mortgage,  deed of trust,  lien,  pledge,  encumbrance,  charge,  restriction or
security interest in or on such asset, (ii) the interest of a vendor or a lessor
under any conditional sale agreement, capital lease or title retention agreement
relating to such asset and (iii) in the case of securities, any purchase option,
call or similar right of a third party with respect to such securities.

     1.45  "Limited  Partner"  means any  Person  named as a Limited  Partner in
Appendix  I,  as  such  Appendix  may be  amended  from  time  to  time,  or any
Substituted  Limited  Partner or Additional  Limited  Partner,  in such Person's
capacity as a Limited Partner of the Partnership.

     1.46 "Limited Partner  Interest" means a Partnership  Interest of a Limited
Partner in the  Partnership  representing a fractional  part of the  Partnership
Interests  of all Partners and includes any and all benefits to which the holder
of such a Partnership  Interest may be entitled,  as provided in this Agreement,
together  with all  obligations  of such  Person  to  comply  with the terms and
provisions of this Agreement.  A Limited Partner  Interest may be expressed as a
number of L.P. Units.

     1.47 "Liquidating Event" has the meaning set forth in Section 13.1 hereof.

- - 9 -

<PAGE>
     1.48 "Liquidator" has the meaning set forth in Section 13.2 hereof.

     1.49 "L.P.  Unit" means a fractional,  undivided  share of the  Partnership
Interests  of all  Partners  issued  pursuant to Sections  4.1, 4.2 and 4.3. The
number of L.P. Units outstanding and the Percentage Interests in the Partnership
represented by such L.P. Units are set forth in Appendix I, as such Appendix may
be amended from time to time.  The ownership of L.P. Units shall be evidenced by
such form of  certificate  for units as the General  Partner adopts from time to
time  unless  the  General  Partner  determines  that  the L.P.  Units  shall be
uncertificated securities.

     1.50 "L.P. Unit Majority" means the Limited  Partners  holding the right to
vote, in the aggregate, a majority of the total number of L.P. Units outstanding
in the Operating Partnership.

     1.51 "Net  Income"  or "Net  Loss"  means,  for each  fiscal  year or other
applicable  period, an amount equal to the Partnership's  taxable income or loss
for such year or period as  determined  for federal  income tax  purposes by the
General  Partner,  determined in accordance with Section 703(a) of the Code (for
this purpose, all items of income, gain, loss or deduction required to be stated
separately  pursuant to Section  703(a) of the Code shall be included in taxable
income or loss),  adjusted  as  follows:  (a) by  including  as an item of gross
income any tax-exempt income received by the Partnership and not otherwise taken
into  account  in  computing  Net  Income  or Net  Loss;  (b) by  treating  as a
deductible  expense any  expenditure  of the  Partnership  described  in Section
705(a)(2)(B)  of the  Code  (or  which  is  treated  as a  Section  705(a)(2)(B)
expenditure pursuant to Section 1.704-1(b)(2)(iv)(i) of the Regulations) and not
otherwise  taken into  account in  computing  Net Income or Net Loss,  including
amounts paid or incurred to organize the Partnership (unless an election is made
pursuant to Section  709(b) of the Code) or to promote the sale of  interests in
the Partnership and by treating deductions for any losses incurred in connection
with the sale or exchange of Partnership property disallowed pursuant to Section
267(a)(1)  or  707(b)  of  the  Code  as   expenditures   described  in  Section
705(a)(2)(B)  of the Code;  (c) by taking into account  Depreciation  in lieu of
depreciation,  depletion,  amortization and other cost recovery deductions taken
into account in computing  taxable income or loss; (d) by computing gain or loss
resulting from any  disposition  of  Partnership  property with respect to which
gain or loss is recognized  for federal  income tax purposes by reference to the
Gross Asset Value of such  property  rather than its adjusted tax basis;  (e) in
the event of an  adjustment  of the Gross Asset Value of any  Partnership  asset
which requires that the Capital Accounts of the Partnership be adjusted pursuant
to Sections 1.704-1(b)(2)(iv)(e), (f) and (g) of the Regulations, by taking into
account  the  amount  of  such  adjustment  as if  such  adjustment  represented
additional Net Income or Net Loss pursuant to Appendix II; and (f) by not taking
into account in computing Net Income or Net Loss items  separately  allocated to
the Partners pursuant to Sections 1 and 2 of Appendix II.

     1.52 "New Equity Financing Right" has the meaning set forth in Section 8.8.

                                     - 10 -

<PAGE>
     1.53  "Nonrecourse  Deductions"  has the meaning  set forth in  Regulations
Sections 1.704-2(b)(1) and 1.704-2(c).

     1.54  "Nonrecourse  Liabilities"  has the meaning set forth in  Regulations
Section 1.704-2(b)(3).

     1.55 "Operating Partnership" means, collectively,  Mission West Properties,
L.P.,  Mission West  Properties,  L.P. I, Mission West  Properties,  L.P. II and
Mission West Properties, L.P. III.

     1.56  "Partner"  means  the  General  Partner  or a  Limited  Partner,  and
"Partners" means the General Partner and the Limited Partners collectively.

     1.57 "Partner  Minimum Gain" means an amount,  with respect to each Partner
Nonrecourse  Debt,  equal to the  Partnership  Minimum Gain that would result if
such  Partner  Nonrecourse  Debt  were  treated  as  a  Nonrecourse   Liability,
determined in accordance with Regulations Section 1.704-2(i)(3).

     1.58 "Partner  Nonrecourse  Debt" has the meaning set forth in  Regulations
Section 1.704-2(b)(4).

     1.59  "Partner  Nonrecourse  Deductions"  has  the  meaning  set  forth  in
Regulations  Section  1.704-2(i)(2),  and  the  amount  of  Partner  Nonrecourse
Deductions with respect to a Partner  Nonrecourse Debt for a Partnership taxable
year shall be  determined in accordance  with the rules of  Regulations  Section
1.704-2(i)(2).

     1.60  "Partnership"  means  the  limited   partnership   governed  by  this
Agreement, and any successor thereto.

     1.61 "Partnership  Interest" means an ownership interest in the Partnership
representing an Adjusted Contribution by either a Limited Partner or the General
Partner  and  includes  any and all  benefits  to  which  the  holder  of such a
Partnership  Interest  may be entitled as provided in this  Agreement,  together
with all  obligations  of such Person to comply with the terms and provisions of
this  Agreement.  A  Partnership  Interest  may be expressed as a number of L.P.
Units.

     1.62  "Partnership  Minimum Gain" has the meaning set forth in  Regulations
Section  1.704-2(b)(2),  and the amount of Partnership  Minimum Gain, as well as
any net increase or decrease in a Partnership  Minimum  Gain,  for a Partnership
taxable year shall be  determined in  accordance  with the rules of  Regulations
Section 1.704-2(d).

     1.63  "Partnership  Record Date" means the record date  established  by the
General Partner for the  distribution of Available Cash pursuant to Section 5.1,
which  shall be the same as the record  date  established  by the  Company for a
distribution  to  its  shareholders  of  some  or all of  its  portion  of  such
distribution.

                                     - 11 -

<PAGE>
     1.64 "Partnership Year" means the fiscal year of the Partnership,  which is
the calendar year, as set forth in Section 9.2.

     1.65  "Pending  Development  Projects"  means  three Berg  Group-owned  R&D
Property  development  projects  which the Operating  Partnership  has agreed to
acquire upon their completion pursuant to the terms of the Acquisition Agreement
and the related Pending  Projects  Option  Agreement into by the parties thereto
upon approval of certain transactions by the Company's shareholders.

     1.66 "Partnership  Interest" means, as to a Partner, the fractional part of
the Partnership Interests owned by such Partner and expressed as a percentage as
specified in Appendix I, as such Appendix may be amended from time to time.

     1.67  "Permitted  Partners"  has the meaning  set forth in Section  1(b) of
Appendix II.

     1.68  "Permitted  Transferee"  means  any  person  to whom  L.P.  Units are
Transferred in accordance with Section 11.3 of this Agreement.

     1.69 "Person" means an individual or Entity.

     1.70  "Precontribution  Gain" has the meaning set forth in Section  3(c) of
Appendix II.

     1.71 "Put Rights" shall have the meaning provided in Section 8.7.

     1.72  "Protective  Provisions  Expiration Date" means the date on which the
members of the Berg Group own less than 15% of the Common  Stock,  treating  all
Equity  Securities  of the Company and all L.P.  Units owned by such  members as
Common Stock outstanding for this purpose.

     1.73  "Properties"  has the  meaning  given  such  term in the  Acquisition
Agreement.

     1.74  "Quarter"  means each of the three month periods  ending on March 31,
June 30, September 30 and December 31.

     1.75  "Regulations"  means the  final,  temporary  or  proposed  Income Tax
Regulations  promulgated under the Code, as such regulations may be amended from
time to time (including corresponding provisions of succeeding regulations).

     1.76 "REIT" means a real estate  investment trust as defined in Section 856
of the Code.

     1.77 "REIT  Requirements"  means all of the requirements  imposed under the
Code on any entity seeking to qualify and remain qualified as a REIT.

                                     - 12 -

<PAGE>
     1.78  "Restricted  Partner"  has the meaning  set forth in Section  1(b) of
Appendix II.

     1.79 "SEC" means the U.S. Securities and Exchange Commission.

     1.80 "Securities Act" means the Securities Act of 1933, as amended.

     1.81 "Stock Option Plan" means the Company's 1997 Stock Option Plan and any
other plan adopted from time to time by the Company  pursuant to which shares of
Common  Stock are  issued,  or  options to  acquire  shares of Common  Stock are
granted,  to  consultant,  employees or directors of the Company,  the Operating
Partnership  or their  respective  Affiliates in  consideration  for services or
future services.

     1.82  "Subsidiary"  means,  with  respect to any Person,  any  corporation,
partnership  or other  entity of which a majority of (i) the voting power of the
Voting Securities;  or (ii) the outstanding equity interests, is owned, directly
or indirectly, by such Person.

     1.83  "Substituted  Limited  Partner"  means a Person who is  admitted as a
Limited Partner to the Partnership pursuant to Section 11.4 hereof.

     1.84 "Tax Items" has the meaning set forth in Appendix II.

     1.85  "Terminating   Capital  Transaction"  means  any  Change  of  Control
Transaction.

     1.86  "Total  Market   Capitalization"   means  the  market  value  of  the
outstanding  Common  Stock  determined  as if all L.P.  Units  in the  Operating
Partnership had been converted into Common Stock at the Exchange Factor plus the
total debt of the Company and the Operating Partnership.

     1.87 "Transfer" as a noun, means any sale, assignment,  conveyance, pledge,
hypothecation,  gift,  encumbrance or other  transfer,  and as a verb,  means to
sell, assign, convey, pledge, hypothecate, give, encumber or otherwise transfer.

     1.88 "Unit"  means an equal  undivided  interest in all of the  outstanding
Partnership Interests.

     1.89  "United  States  Person"  means  a  holder  of L.P.  Units  who is an
individual  who is a citizen or resident of the United  States;  a  corporation,
partnership  or other entity  created or organized in, or under the laws of, the
United States or any State;  an estate the income of which from sources  without
the United States is includable in gross income for United States federal income
tax purposes; a trust the primary supervision of which is exercisable by a court
within the United States and having one or more United States  fiduciaries  with
authority to control all  substantial  decisions  of such trust;  and any 

                                     - 13 -

<PAGE>
Person  whose  income  or gain in  respect  of the  L.P.  Units  is  effectively
connected with the conduct of a United States trade or business.

     1.90  "Voting  Securities"  means any Equity  Security  which  entitles the
holder thereof to vote on all matters  submitted for a vote of equity holders by
the issuer of such Equity Security, including the right to vote for directors in
the case of a corporation.

     Certain  additional  terms  and  phrases  have the  meanings  set  forth in
Appendix II.

ARTICLE 2. Organizational Matters.

     2.1  Continuation.  The Partners  hereby agree to continue the  Partnership
under and  pursuant  to the Act.  Except  as  expressly  provided  herein to the
contrary,  the rights and obligations of the Partners and the administration and
termination  of the  Partnership  shall be governed by the Act. The  Partnership
Interest of each Partner shall be personal property for all purposes.

     2.2 Name.  The name of the  Partnership  shall be Mission West  Properties,
L.P. [ ]. The  Partnership's  business may be conducted  under any other name or
names deemed advisable by the General Partner, including the name of the General
Partner or any  Affiliate  thereof.  The words  "Limited  Partnership,"  "L.P.,"
"Ltd." or similar words or letters shall be included in the  Partnership's  name
where necessary to comply with the laws of any jurisdiction. The General Partner
in its sole and absolute  discretion  may, upon 5 days' prior written  notice to
the Limited Partners, change the name of the Partnership.

     2.3  Registered  Office and Agent;  Principal  Office.  The  address of the
registered  office of the  Partnership in the State of Delaware and the name and
address of the registered agent for service of process on the Partnership in the
State  of  Delaware  is The  Corporation  Trust  Company,  1029  Orange  Street,
Wilmington,  Delaware 19801.  The principal  office of the Partnership  shall be
10050 Bandley Drive,  Cupertino,  California  95014,  or such other place as the
General  Partner  may from  time to time  designate  by  notice  to the  Limited
Partners.  The  Partnership  may maintain  offices at such other place or places
within or outside the State of Delaware as the General Partner deems advisable.

     2.4 Power of Attorney.

     A.   Each Limited Partner and each Assignee hereby constitutes and appoints
          the General  Partner,  any  Liquidator,  and  authorized  officers and
          attorneys-in-fact  of each, and each of those acting  singly,  in each
          case with full power of substitution, as its true and lawful agent and
          attorney-in-fact, with full power and authority in its name, place and
          stead to:

          (1)  execute,  swear to, acknowledge,  deliver, file and record in the
               appropriate  public offices (a) all  certificates,  documents and
               other instruments (including,  without limitation, this Agreement
               and the Certificate  and all 

                                     - 14 -

<PAGE>
               amendments or  restatements  thereof) that the General Partner or
               the Liquidator deems appropriate or necessary to form, qualify or
               continue the existence or  qualification  of the Partnership as a
               limited  partnership  (or a  partnership  in  which  the  Limited
               Partners have limited  liability) in the State of Delaware and in
               all other  jurisdictions in which the Partnership may or plans to
               conduct business or own property,  including, without limitation,
               any  documents  necessary or advisable to convey any  Contributed
               Property to the Partnership; (b) all instruments that the General
               Partner deems  appropriate or necessary to reflect any amendment,
               change,   modification   or  restatement  of  this  Agreement  in
               accordance  with  its  terms;   (c)  all  conveyances  and  other
               instruments  or  documents  that  the  General   Partner  or  the
               Liquidator   deems   appropriate  or  necessary  to  reflect  the
               dissolution and  liquidation of the  Partnership  pursuant to the
               terms  of  this  Agreement,   including,  without  limitation,  a
               certificate of cancellation;  (d) all instruments relating to the
               admission,  withdrawal,  removal or  substitution  of any Partner
               pursuant to, or other events  described in, Article 11, 12 or 13,
               or  the  Capital   Contribution  of  any  Partner;  and  (e)  all
               certificates,  documents  and other  instruments  relating to the
               determination  of  the  rights,  preferences  and  privileges  of
               Partnership Interest; and

          (2)  execute,  swear  to,  seal,  acknowledge  and file  all  ballots,
               consents,  approvals, waivers, certificates and other instruments
               appropriate or necessary,  in the sole and absolute discretion of
               the General Partner or any Liquidator,  to make, evidence,  give,
               confirm or ratify any vote, consent, approval, agreement or other
               action  which is made or given by the  Partners  hereunder  or is
               consistent  with the terms of this  agreement or  appropriate  or
               necessary,  in the sole  discretion of the General Partner or any
               Liquidator, to effectuate the terms or intent of this Agreement.

     Nothing contained herein shall be construed as authorizing the General
Partner or any Liquidator to amend this Agreement except in accordance with
Article 14, or as may be otherwise expressly provided for in this Agreement.

     B.   The foregoing  power of attorney is hereby  declared to be irrevocable
          and a power coupled with an interest,  in recognition of the fact that
          each of the  Partners  will be relying  upon the power of the  General
          Partner and any Liquidator to act as contemplated by this Agreement in
          any filing or other action by it on behalf of the Partnership,  and it
          shall survive and not be affected by the subsequent  Incapacity of any
          Limited  Partner or Assignee and the Transfer of all or any portion of
          such Limited  Partner's or Assignee's  L.P.  Units and shall extend to
          such Limited  Partner's or Assignee's heirs,  successors,  assigns and
          personal representatives. Each such Limited Partner or Assignee hereby
          agrees to be bound by any  representation  made by the General Partner
          or any  Liquidator,  acting in good  faith  pursuant  to such power of
          attorney,  and each such Limited Partner or Assignee hereby waives any
          and  all  defenses  which  may be  available  to  contest,  negate  or
          disaffirm the action of the General Partner or any  Liquidator,  taken
          in good faith under such power of attorney.  Each  Limited  Partner or
          Assignee  shall  execute  and  deliver to the  General  Partner or 

                                     - 15 -

<PAGE>
          the Liquidator,  within 15 days after receipt of the General Partner's
          or Liquidator's request therefor, such further designation,  powers of
          attorney  and  other   instruments  as  the  General  Partner  or  the
          Liquidator,  as the case may be, deems  necessary to  effectuate  this
          Agreement and the purposes of the Partnership.

     2.5 Term. The term of the Partnership shall commence on the date hereof and
shall  continue  until  December 31, 2048,  unless the  Partnership is dissolved
sooner pursuant to the provisions of Article 13 or as otherwise provided by law.

ARTICLE 3. Purpose.

     3.1 Purpose  and  Business.  The  purpose and nature of the  business to be
conducted by the  Partnership  is to conduct any  business  that may be lawfully
conducted  by a limited  partnership  organized  pursuant to the Act  including,
without limitation,  to engage in the following  activities:  to acquire,  hold,
own, develop,  construct,  improve,  maintain,  operate,  sell, lease, transfer,
encumber,   convey,  exchange,  and  otherwise  dispose  of  or  deal  with  the
Properties,  and the  Pending  Development  Projects;  to  acquire,  hold,  own,
develop, construct, improve, maintain, operate, sell, lease, transfer, encumber,
convey,  exchange,  and  otherwise  dispose  of or deal with  real and  personal
property of all kinds;  to undertake such other  activities as may be necessary,
advisable,  desirable or convenient to the business of the  Partnership;  and to
engage in such other ancillary  activities as shall be necessary or desirable to
effectuate the foregoing purposes.

     3.2 Powers.  The Partnership is empowered to do any and all acts and things
necessary,  appropriate,  proper, advisable, incidental to or convenient for the
furtherance  and  accomplishment  of the  purposes and business for which it has
been formed and for the  protection  and benefit of the  Partnership;  provided,
that the Partnership  shall not take, and shall refrain from taking,  any action
which,  in the  judgment  of the  General  Partner,  in its  sole  and  absolute
discretion, (i) could adversely affect the ability of the Company to continue to
qualify as a REIT; (ii) could subject the Company to any additional  taxes under
Section  857 or Section  4981 of the Code;  or (iii)  could  violate  any law or
regulation  of any  governmental  body or agency  having  jurisdiction  over the
Company or its  securities,  unless  such action (or  inaction)  shall have been
specifically  consented to by the Company,  if not the General Partner,  and the
L.P. Unit Majority.

ARTICLE 4. Capital Contributions.

     4.1 Capital Contributions of the Partners.

     A.   At the time of the execution of this Agreement, the Partners have made
          the Adjusted  Contributions,  or shall make the Capital  Contributions
          contemplated by the Acquisition Agreement,  as set forth in Appendix I
          to this  Agreement.  Each Limited  Partner shall own L.P. Units in the
          amount  set forth for such  Partner  in  Appendix  I and shall  have a
          Percentage  Interest  in the  Partnership  as set forth in Appendix I,
          which shall be adjusted in Appendix I from time to time by the General
          Partner  to the extent  

                                     - 16 -

<PAGE>
          necessary  to  reflect   accurately   exchanges,   additional  Capital
          Contributions,  the issuance of additional Partnership Interests,  the
          exercise of Put Rights with  respect to L.P.  Units or similar  events
          having an effect on any Partner's Percentage Interest.

     B.   The number of Units held by the General  Partner,  in its  capacity as
          general partner,  shall be deemed to be the General Partner  Interest.
          Except as provided in Sections 4.2, 10.5 and 13.3,  the Partners shall
          have no obligation to make any additional Capital Contributions.

     4.2 Additional Funds; Restrictions on Company.

     A.   The sums of money  required to finance the business and affairs of the
          Partnership  shall be derived from the initial  Capital  Contributions
          made to the Partnership by the Company as set forth in the Acquisition
          Agreement and from funds  generated from the operation and business of
          the Partnership including, without limitation,  distributions directly
          or indirectly received by the Partnership from Available Cash provided
          by the Operating  Partnership.  In the event  additional  financing is
          needed from sources other than as set forth in the preceding  sentence
          for any reason, subject to the provisions of Sections 8.8 and 8.9, the
          General  Partner may, in its  discretion,  in such amounts and at such
          times as it solely shall  determine  to be  necessary or  appropriate,
          obtain  additional funds for the Operating  Partnership which shall be
          allocated to each of the partnerships included therein,  including the
          Partnership,  pro rata in  proportion  to the  ratio of the  number of
          Units then outstanding in each such Partnership to the total number of
          L.P. Units then  outstanding in the Operating  Partnership  taken as a
          whole ("Pro Rata Share").  Accordingly, to the extent of such Pro Rata
          Share of the  Partnership  and  subject to  Section  8.9 and any other
          limitations contained in this Agreement or the Acquisition  Agreement,
          the General Partner may, (i) cause the Partnership to issue additional
          Partnership  Interests and admit  additional  Limited  Partners to the
          Partnership  in  accordance  with  Section 4.3;  (ii) make  additional
          Capital Contributions to the Partnership (subject to the provisions of
          Section 4.2B); (iii) cause the Partnership to borrow money, enter into
          loan arrangements,  issue debt securities, obtain letters of credit or
          otherwise  borrow money on a secured or unsecured  basis; or (iv) make
          loans to the Partnership  (subject to Section 4.2B). In no event shall
          the  Limited  Partners  be  required  to make any  additional  Capital
          Contributions  or any loan to,  or  otherwise  provide  any  financial
          accommodation for the benefit of, the Partnership pursuant to any such
          permitted action by the General  Partner,  except insofar as a Limited
          Partner  has  exercised  its New Equity  Financing  Right  pursuant to
          Section 8.8.

     B.   Except as agreed  otherwise at the time by vote or written  consent of
          the L.P. Unit Majority:  (i) the Company shall lend to the Partnership
          its Pro Rata Share of the proceeds of or consideration received by the
          Company  from all loans and  advances to the  Company  pursuant to any
          financial  borrowing  arrangement  on the  same  financial  terms  and
          conditions,  including interest rate and repayment schedule,  as shall
          be  applicable  with  respect to or  incurred in  connection  with the
          issuance  of  such  loans  and  advances  to the  Company  (which  the
          Partnership may, in turn, lend to any other

                                     - 17 -

<PAGE>
          partnership  constituting part of the Operating Partnership);  (ii) in
          the case ofEquity  Securities  senior or junior to the Common Stock as
          to  dividends  and   distributions  on  liquidation,   which  are  not
          convertible  into Common  Stock as of the issuance  date,  the Company
          shall  contribute to the Partnership the proceeds of or  consideration
          (including  any property or other non-cash  assets)  received for such
          Securities  and the proceeds of, or  consideration  received from, any
          subsequent  exercise,  exchange or conversion thereof (if applicable),
          and shall receive from the Partnership,  new Partnership  Interests in
          the  Partnership  in  consideration  therefor with the same  financial
          terms  and  conditions,   including   dividend,   dividend   priority,
          liquidation  preference,  conversion  and  redemption  rights,  as are
          applicable  to such  Equity  Securities;  (iii) in the case of  Common
          Stock, or other Equity Securities  convertible into Common Stock as of
          the issuance date,  including,  without  limitation,  shares of Common
          Stock or other  Equity  Securities  issued  upon  exercise  of options
          issued under the Stock Option Plan or any other Employee  Benefit Plan
          of the Company,  the Company shall  contribute to the  Partnership the
          proceeds of or consideration (including any property or other non-cash
          assets)   received  for  such  Securities  and  the  proceeds  of,  or
          consideration  received  from, any  subsequent  exercise,  exchange or
          conversion  thereof  (if  applicable),  and  shall  receive  from  the
          Partnership a number of additional Units o General Partner Interest in
          consideration  therefor  equal to the  product  of (x) the  number  of
          shares  of  Common  Stock or other  Equity  Securities  issued  by the
          Company,  multiplied by (y) the Exchange  Factor in effect on the date
          of such  contribution;  and (iv) in the case of Common  Stock or other
          Equity  Securities  issued upon the  exercise or  surrender  of rights
          under a stock  option,  warrant,  or any  other  right  for  which the
          Company does not receive proceeds,  and issues less than the number of
          shares of Common  Stock or other  Equity  Securities  subject  to such
          option,  warrant or other right to the holder  thereof  retaining  the
          excess  of such  shares  as  payment  of the  purchase  price  (a "net
          exercise"),  or where the Company uses the proceeds  received pursuant
          to a Dividend  Reinvestment  Plan to acquire shares of Common Stock or
          other Equity  Securities  to be issued to the  shareholder  exercising
          such right, the Company shall receive from the Partnership a number of
          additional  Units of  General  Partner  Interest  equal to the  actual
          number of shares of Common Stock or other Equity  Securities so issued
          to the shareholder multiplied by the Exchange Factor.

     4.3 Issuance of Additional Partnership  Interests;  Admission of Additional
Limited  Partners.  In addition  to any  Partnership  Interests  issuable by the
Partnership  pursuant to Section 4.2, and subject to the  provisions of Sections
8.8 and 8.9, the General Partner is authorized to cause the Partnership to issue
additional Partnership Interests (or options therefor) in the form of L.P. Units
or other Partnership Interests senior or junior to the L.P. Units to any Persons
at any time or from  time to time,  for  consideration  per Unit of  Partnership
Interest not less than the Common Stock Price determined at the initial issuance
date divided by the Exchange Factor, and on such other terms and conditions,  as
the General Partner shall establish provided, however, that (i) each partnership
included in the  Operating  Partnership  shall effect its Pro Rata Share of such
issuance,  (ii) such issuance  does not cause the  Partnership  to become,  with
respect to any Employee Benefit Plan subject to Title I of ERISA or Section 4975
of the Code, a "party in interest"  (as defined in Section  3(14) of ERISA) or

                                     - 18 -

<PAGE>
a "disqualified  person" (as defined in Section 4975(e) of the Code);  and (iii)
such  issuance  does not cause any portion of the assets of the  Partnership  to
constitute assets of any Employee Benefit Plan subject to Section  2510.3-101 of
the  regulations  of the  United  States  Department  of Labor.  Subject  to the
limitations  set forth in the preceding  sentence,  the General Partner may take
such steps as it, in its reasonable  discretion,  deems necessary or appropriate
to admit any Person as a Limited Partner of the Partnership,  including, without
limitation, amending the Certificate,  Appendix I or any other provision of this
Agreement.

     4.4 Repurchase of Company Equity Securities. In the event the Company shall
elect to purchase from its  shareholders  shares of Common Stock for the purpose
of  delivering  such  shares  to  satisfy  an  obligation   under  any  Dividend
Reinvestment  Plan or Employee  Benefit Plan  adopted by the  Company,  or shall
repurchase  any other  Equity  Securities  of the Company  pursuant to any other
share  repurchase  obligation or arrangement  undertaken by the Company with any
Company shareholder,  including preferred stock redemptions,  the purchase price
paid by the  Company  for such  shares and any other  expenses  incurred  by the
Company in  connection  with such purchase  shall be considered  expenses of the
Partnership  and shall be  reimbursed  to the Company,  subject to the condition
that: (i) if such shares subsequently are to be sold by the Company, the Company
shall pay to the  Partnership  any  proceeds  received  by the  Company for such
shares of Common Stock or other Equity Securities  (provided that an exchange of
shares of Common Stock for L.P. Units pursuant to the Exchange Rights  Agreement
would not be considered a sale for such  purposes);  and (ii) if such shares are
not re-transferred by the Company within 30 days after the purchase thereof, the
General  Partner  shall cause the  Partnership  to cancel the number of Units of
General Partner  Interest held by the Company  determined by multiplying (x) the
quotient obtained by dividing the total amount deemed paid by the Partnership by
the Common Stock Price determined as of the repurchase date, by (y) the Exchange
Factor in effect on the date of such repurchase.

     4.5 No Third Party  Beneficiary.  No  creditor or other third party  having
dealings  with the  Partnership  shall  have the right to  enforce  the right or
obligation  of any Partner to make Capital  Contributions  or loans or to pursue
any other right or remedy hereunder or at law or in equity,  it being understood
and agreed that the provisions of this Agreement shall be solely for the benefit
of,  and may be  enforced  solely by, the  parties  hereto and their  respective
successors and assigns.

     4.6 No Interest; No Return. No Partner shall be entitled to interest on its
Capital Contribution or on such Partner's Capital Account. Except as provided in
Section 8.7 or Article 13 of this  Agreement,  or by law, no Partner  shall have
any right to demand or receive the return of its Capital  Contribution  from the
Partnership.

ARTICLE 5. Distributions.

     5.1 Regular  Distributions.  Except for  distributions  pursuant to Section
13.2 in connection with the dissolution and liquidation of the Partnership,  and
subject to the  provisions  of Sections  5.3, 5.4 and 5.5,  the General  Partner
shall cause the  Partnership

                                     - 19 -

<PAGE>
to distribute,  from time to time as determined by the General  Partner,  but in
any event not less frequently than once each Quarter, the Partnership's Pro Rata
Share of all Available Cash, to the Partners,  in accordance with each Partner's
respective  Percentage  Interest;  provided,  however,  that in no  event  may a
Limited  Partner receive a distribution of Available Cash with respect to a L.P.
Unit, if such Limited Partner is entitled to receive a distribution  out of such
Available  Cash with respect to a share of Common Stock for which such L.P. Unit
has been exchanged.

     5.2 Qualification as a REIT. The General Partner shall be entitled to cause
the Partnership to distribute to the General Partner the  Partnership's Pro Rata
Share of Available Cash  distributed by the Operating  Partnership to enable the
General  Partner to pay  shareholder  dividends  that will (i)  satisfy the REIT
Requirements  for  distributions  to  shareholders,  and (ii) avoid any  federal
income or excise tax liability of the General Partner;  provided,  however,  the
General  Partner is not bound to comply  with this  covenant  to the extent such
distributions would violate applicable Delaware law.

     5.3  Withholding.  With respect to any withholding tax or other similar tax
liability or obligation to which the  Partnership  may be subject as a result of
any act or status of any  Partner or to which the  Partnership  becomes  subject
with  respect to any Unit,  the  Partnership  shall  have the right to  withhold
amounts of Available Cash  distributable to such Partner or with respect to such
Units, to the extent of the amount of such  withholding tax or other similar tax
liability or obligation pursuant to the provisions contained in Section 10.5.

     5.4 Additional Partnership Interests. If the Partnership issues Partnership
Interests  in  accordance  with Section 4.2 or 4.3 which are entitled to certain
distribution priorities,  Section 5.1 shall be amended, as necessary, to reflect
the  distribution  priority  of such  Partnership  Interests  and  corresponding
amendments shall be made to the provisions of Appendix II.

     5.5  Distributions  Upon Liquidation.  Proceeds from a Terminating  Capital
Transaction  and any other cash  received or  reductions  in reserves made after
commencement of the  liquidation of the Partnership  shall be distributed to the
Partners in accordance with Section 13.2.

ARTICLE 6. Allocations.

     The Net Income,  Net Loss,  and other  Partnership  items of income,  gain,
loss,  deduction  or credit as  provided  under  the  Code,  shall be  allocated
pursuant to the provisions of Appendix II, as amended from time to time.

ARTICLE 7. Management and Operation of Business.

     7.1 Management.

     A.   Except as otherwise expressly provided in this Agreement,  and subject
          to the  provisions  of Section  8.9,  all  management  powers over the
          business  and affairs  the 

                                     - 20 -

<PAGE>
          Partnership  are  and  shall  be  exclusively  vested  in the  General
          Partner, and no Limited Partner shall have any right to participate in
          or exercise  control or management power over the business and affairs
          of the  Partnership.  The  General  Partner  may not be removed by the
          Limited Partners, with or without cause. In addition to the powers now
          or hereafter granted a general partner of a limited  partnership under
          the Act or which are  granted to the General  Partner  under any other
          provision of this Agreement, the General Partner shall have full power
          and authority to make contracts,  sign documents,  conduct litigation,
          acquire  and  convey   property,   hire  employees,   consultants  and
          professionals,  raise capital, borrow funds, incur liabilities, invest
          funds, comply with all applicable laws, and do all other things deemed
          necessary or desirable by the General  Partner to conduct the business
          of the  Partnership  on behalf of the  Partnership;  to  exercise  all
          powers set forth in Section  3.2, and to  effectuate  the purposes set
          forth in Section  3.1,  provided  that any  exercise of the  foregoing
          rights and powers must be consistent with the REIT Requirements.

     B.   Except as provided in Section 8.9, each of the Limited Partners agrees
          that the General Partner is authorized to execute, deliver and perform
          the agreements and  transactions on behalf of the Partnership  without
          any further act, approval or vote of the Partners, notwithstanding any
          other  provision  of this  Agreement to the fullest  extent  permitted
          under  the  Act or  other  applicable  law,  rule or  regulation.  The
          execution,  delivery  or  performance  by the  General  Partner or the
          Partnership  of any  agreement  authorized  or  permitted  under  this
          Agreement  shall not constitute a breach by the General Partner of any
          duty that the General  Partner may owe the  Partnership or the Limited
          Partners  or any other  Persons  under this  Agreement  or of any duty
          stated or implied by law or equity.

     C.   At all times from and after the date hereof,  in  accordance  with the
          provisions of the Acquisition Agreement, the General Partner may cause
          the Partnership to establish and maintain at any and all times working
          capital  accounts and other cash or similar balances in such amount as
          the  General  Partner,  in its sole  and  absolute  discretion,  deems
          appropriate  and  reasonable  from  time to time.  Such  accounts  may
          include funds of the General Partner and the other partnerships in the
          Operating  Partnership,  which the  General  Partner  shall be free to
          commingle.

     D.   In exercising its authority under this Agreement,  the General Partner
          shall take into  account  the tax  consequences  to any Partner of any
          action taken by it and shall select the  alternative  which appears at
          the time to present the least adverse tax  consequences to the Limited
          Partners.  By way of example,  but not of  limitation:  If the General
          Partner decides to refinance  (directly or indirectly) any outstanding
          indebtedness  of  the  Partnership,  the  General  Partner  shall  use
          reasonable  efforts to  structure  such  refinancing  in a manner that
          minimizes  any adverse tax  consequences  resulting  therefrom  to the
          Limited  Partners.  The General Partner and the Partnership  shall not
          have  liability  to a Limited  Partner  under any  circumstances  as a
          result of an income tax liability  incurred by such Limited Partner as
          a result of a necessary  action (or  inaction) by the General  Partner
          taken  pursuant to its  authority  under and in  accordance  with this
          Agreement where avoiding the resulting  adverse tax

                                     - 21 -

<PAGE>
          consequences  to  a Limited  Partner  was not  reasonably  practicable
          under the circumstances.

     7.2 Certificate of Limited Partnership.  The General Partner shall file the
amended  Certificate  with the Secretary of State of Delaware as required by the
Act. The General  Partner shall use all reasonable  efforts to cause to be filed
such other  certificates  or documents  as may be  reasonable  and  necessary or
appropriate for the formation,  continuation,  qualification  and operation of a
limited partnership (or a partnership in which the limited partners have limited
liability)  in the State of Delaware  and any other  state,  or the  District of
Columbia,  in which the Partnership may elect to do business or own property. To
the  extent  that  such  action  is  determined  by the  General  Partner  to be
reasonable  and  necessary  or  appropriate,  the  General  Partner  shall  file
amendments to and  restatements  of the  Certificate and do all of the things to
maintain the Partnership as a limited partnership (or a partnership in which the
limited partners have limited liability) under the laws of the State of Delaware
and each other state, or the District of Columbia,  in which the Partnership may
elect to do business or own property.  Subject to the terms of Section  8.5A(iv)
hereof,  the General Partner shall not be required,  before or after filing,  to
deliver  or mail a copy  of the  Certificate  or any  amendment  thereto  to any
Limited Partner.

     7.3 Reimbursement of the General Partner and the Company.

     A.   Except as provided in this Section 7.3 and elsewhere in this Agreement
          (including the provisions of Articles 5 and 6 regarding distributions,
          payments,  and  allocations to which it may be entitled),  the General
          Partner shall not be compensated  for its services as general  partner
          of the Partnership.

     B.   The General  Partner,  shall be reimbursed on a monthly basis, or such
          other basis as it may  determine in its sole and absolute  discretion,
          for  all  expenses  that  it  incurs  relating  to the  ownership  and
          operation of, or for the benefit of, the Partnership;  provided,  that
          the amount of any such reimbursement  shall be reduced by any interest
          earned by the General  Partner with respect to bank  accounts or other
          instruments  or accounts  held by it in its name.  Such  reimbursement
          shall  be in  addition  to  any  reimbursement  made  as a  result  of
          indemnification pursuant to Section 7.6.

     7.4 Outside  Activities of the General  Partner.  The General Partner shall
not  directly or  indirectly  enter into or conduct any  business  other than in
connection  with the  ownership,  acquisition,  development  and  disposition of
Partnership Interests and the management of the business of the Partnership, and
such  activities  as  are  incidental  thereto.  The  General  Partner  and  any
Affiliates  of the General  Partner may acquire  Limited  Partner  Interests and
shall be entitled to exercise all rights of a Limited  Partner  relating to such
Limited Partner Interests.

     7.5 Contracts with Affiliates.

     A.   The  Partnership  may lend or contribute  funds or other assets to its
          Subsidiaries or other Persons

                                     - 22 -

<PAGE>
          in which it has an equity investment and such Persons may borrow funds
          from the Partnership,  on terms and conditions established in the sole
          and  absolute  discretion  of  the  General  Partner.   The  foregoing
          authority  shall  not  create  any  right of  benefit  in favor of any
          Subsidiary or any other Person.

     B.   Except as provided in Section 7.4, the Partnership may Transfer assets
          to joint ventures, other partnerships,  corporations or other business
          entities  in which it is or thereby  becomes a  participant  upon such
          terms and subject to such  conditions  consistent  with this Agreement
          and  applicable law as the General  Partner,  in its sole and absolute
          discretion, believes are advisable.

     C.   Except  as  expressly   permitted  by  this   Agreement  or  otherwise
          contemplated by the Acquisition Agreement, neither the General Partner
          nor any of its Affiliates shall sell,  Transfer or convey any property
          to, or  purchase  any  property  from,  the  Partnership,  directly or
          indirectly, except pursuant to transactions that are determined by the
          General Partner in good faith to be fair and reasonable.

     D.   Except as provided  otherwise in Section 8.9, the General Partner,  in
          its sole and  absolute  discretion  and  without  the  approval of the
          Limited Partners, may propose and adopt, on behalf of the Partnership,
          Employee  Benefit Plans funded by the  Partnership  for the benefit of
          employees of the General Partner, the Partnership, Subsidiaries of the
          Partnership  or any  Affiliate  of any of them in respect of  services
          performed, directly or indirectly, for the benefit of the Partnership,
          the General Partner, or any Subsidiaries of the Partnership.

     E.   The General Partner is expressly authorized to enter into, in the name
          and on behalf of the  Partnership,  a "right of first  opportunity" or
          "right of first offer"  arrangement,  non-competition  agreements  and
          other conflict  avoidance  agreements  with various  Affiliates of the
          Partnership  and the  General  Partner,  on such terms as the  General
          Partner, in its sole and absolute discretion, believes are advisable.

     7.6 Indemnification.

     A.   To the fullest extent permitted by Delaware law, the Partnership shall
          indemnify each Indemnitee from and against any and all losses, claims,
          damages, liabilities,  joint or several, expenses (including,  without
          limitation,  reasonable  attorneys'  fees  and  other  legal  fees and
          expenses),  judgments,  fines, settlements,  and other amounts arising
          from any and all  claims,  demands,  actions,  suits  or  proceedings,
          civil, criminal,  administrative or investigative,  that relate to the
          operations  of the  Partnership  or the  Company  as set forth in this
          Agreement,  in which such Indemnitee may be involved, or is threatened
          to be involved,  as a party or  otherwise,  except to the extent it is
          finally determined by a court of competent jurisdiction, from which no
          further appeal may be taken, that such Indemnitee's action constituted
          intentional  acts or  omissions  constituting  willful  misconduct  or
          fraud. Without limitation, the foregoing indemnity shall extend to any
          liability of any Indemnitee,  pursuant to a loan guaranty or otherwise
          for any  indebtedness  of the  Partnership  or any  Subsidiary  of the
          Partnership (including, without limitation, any indebtedness which the
          Partnership or any Subsidiary of the  Partnership has assumed or taken
          subject  to),  except with respect to  Partnership  debt

                                     - 23 -


<PAGE>
          that has been assumed or  guaranteed  by an Indemnitee in its capacity
          as a Limited  Partner.  The General  Partner is hereby  authorized and
          empowered,  on behalf of the  Partnership,  to enter  into one or more
          indemnity  agreements  consistent  with the provisions of this Section
          7.6 in favor of any Indemnitee having or potentially  having liability
          for  any  such  indebtedness.  Any  indemnification  pursuant  to this
          Section  7.6 shall be made only out of the assets of the  Partnership,
          and neither the General Partner nor any Limited Partner shall have any
          obligation  to  contribute  to  the  capital  of the  Partnership,  or
          otherwise  provide  funds,  to  enable  the  Partnership  to fund  its
          obligations under this Section 7.6.

     B.   Reasonable  expenses  incurred  by an  Indemnitee  who is a party to a
          proceeding  shall be paid or reimbursed by the  Partnership in advance
          of the final disposition of the proceeding.

     C.   The indemnification  provided by this Section 7.6 shall be in addition
          to any other rights to which an  Indemnitee or any other Person may be
          entitled  under any  agreement,  pursuant to any vote of the Partners,
          under the Company's Articles of Incorporation,  as a matter of law, or
          otherwise,  and shall  continue as to an Indemnitee  who has ceased to
          serve  in  such  capacity  unless  otherwise  provided  in  a  written
          agreement pursuant to which such Indemnities are indemnified.

     D.   The  Partnership  may,  but shall not be  obligated  to,  purchase and
          maintain  insurance,  on  behalf  of the  Indemnities  and such  other
          Persons as the General Partner shall determine,  against any liability
          that may be asserted  against or expenses that may be incurred by such
          Person in connection with the Partnership's activities,  regardless of
          whether the Partnership  would have the power to indemnify such Person
          against such liability under the provisions of this Agreement.

     E.   For purposes of this Section 7.6, the  Partnership  shall be deemed to
          have  requested  an  Indemnitee  to serve as  fiduciary of an Employee
          Benefit Plan whenever the performance by such Indemnitee of its duties
          to the  Partnership  also  imposes  duties on, or  otherwise  involves
          services  by,  such   Indemnitee  to  the  plan  or   participants  or
          beneficiaries of the plan; excise taxes assessed on an Indemnitee with
          respect to an Employee  Benefit Pan pursuant to  applicable  law shall
          constitute  fines  within the meaning of this Section 7.6; and actions
          taken or omitted by the Indemnitee with respect to an Employee Benefit
          Plan  in  the  performance  of its  duties  for a  purpose  reasonably
          believed  by  it  to  be  in  the  interest  of  the  participant  and
          beneficiaries of the plan shall be deemed to be for a purpose which is
          not opposed to the best interests of the Partnership.

     F.   In no event may an Indemnitee  subject any of the Limited  Partners to
          personal  liability by reason of the  indemnification  provisions  set
          forth in this Agreement.

     G.   An Indemnitee shall not be denied  indemnification in whole or in part
          under this Section 7.6 because the  Indemnitee  had an interest in the
          transaction with

                                     - 24 -

<PAGE>
          respect to which the  indemnification  applies if the  transaction was
          otherwise permitted by the terms of this Agreement.

     H.   The  provisions  of  this  Section  7.6 are  for  the  benefit  of the
          Indemnitees,  their heirs, successors,  assigns and administrators and
          shall not be deemed to create any rights for the  benefit of any other
          Persons. Any amendment,  modification or repeal of this Section 7.6 or
          any provision  hereof shall be  prospective  only and shall not in any
          way affect the  Partnership's  liability to any Indemnitee  under this
          Section  7.6,  as in  effect  immediately  prior  to  such  amendment,
          modification,  or  repeal  with  respect  to  claims  arising  from or
          relating  to  matters  occurring,  in whole or in part,  prior to such
          amendment,  modification or repeal, regardless of when such claims may
          arise or be asserted.

     I.   The  provisions  of this  Section  7.6  shall be  inapplicable  to any
          investigation,  claim,  suit, or proceeding,  or the portion  thereof,
          which concerns  claims for breach of contract  between the Partnership
          and a Person  contracting  other than in such  Person's  capacity as a
          Partner, or as an officer or director of the General Partner.

     J.   No provision of this Section 7.6 shall be construed as permitting  any
          contract or  transaction  which is  prohibited  by the  provisions  of
          Section 9.2(b) of the Acquisition Agreement.

     7.7 Liability of the General Partner.

     A.   Notwithstanding  anything to the contrary set forth in this Agreement,
          the General Partner and its officers and directors shall not be liable
          for monetary damages to the Partnership, any Partners or any Assignees
          for losses sustained or liabilities  incurred as a result of errors in
          judgment or of any act or omission,  if the General  Partner  acted in
          good faith;  provided,  however,  the foregoing shall not be deemed to
          exculpate  the Company from any  liability  the Company may have under
          the Acquisition Agreement.

     B.   Subject to its  obligations and duties as General Partner set forth in
          Section  7.1A  hereof,  the General  Partner may  exercise  any of the
          powers  granted to it by this  Agreement and perform any of the duties
          imposed upon it hereunder  either directly or by or through its agent.
          The General  Partner  shall not be liable for any acts or omissions on
          the part of any such  agent,  except  in  circumstances  for which the
          General  Partner  may be  liable  under  Section  7.7A or would not be
          subject to indemnification under Section 7.6.

     C.   Any  amendment,  modification  or  repeal of this  Section  7.7 or any
          provision  hereof shall be  prospective  only and shall not in any way
          affect the limitations on the General  Partner's and its officers' and
          directors' liability to the Partnership and the Limited Partners under
          this  Section 7.7 as in effect  immediately  prior to such  amendment,
          modification or repeal with respect to claims arising from or relating
          to

                                     - 25 -

<PAGE>
          matters  occurring,  in  whole or  in part,  prior to  such amendment,
          modification or repeal, regardless of when such claims may arise or be
          asserted.

                                     - 26 -

<PAGE>
     7.8  Limited  Partners'  Right to Bring  Derivative  Lawsuits.  Any Limited
Partner may bring an action on behalf of the Partnership, as permitted under the
Act and the laws of the State of Delaware, to recover a judgment in favor of the
Partnership  if the  General  Partner  has  refused to bring the action or if an
effort to cause  the  General  Partner  to bring  the  action  is not  likely to
succeed.

     7.9 Other Matters Concerning the General Partner.

     A.   The General  Partner  may rely and shall be  protected  in acting,  or
          refraining from acting, upon any resolution,  certificate,  statement,
          instrument,  opinion,  report, notice, request,  consent, order, bond,
          debenture,  or other paper or document believed by it in good faith to
          be genuine and to have been signed or presented by the proper party or
          parties.

     B.   The  General  Partner  may consult  with legal  counsel,  accountants,
          appraisers,  management consultants,  investment bankers,  architects,
          engineers,   environmental   consultants  and  other  consultants  and
          advisers  selected  by it, and any act taken or omitted to be taken in
          reliance  upon the  opinion of such  Persons as to matters  which such
          General  Partner  reasonably  believes  to  be  within  such  Person's
          professional or expert  competence  shall be conclusively  presumed to
          have been done or omitted in good  faith and in  accordance  with such
          opinion.

     C.   The  General  Partner  shall have the right,  in respect of any of its
          powers  or  obligations  hereunder,  to act  through  any of its  duly
          authorized  officers and duly appointed  attorneys-in-fact.  Each such
          attorney  shall,  to the extent provided by the General Partner in the
          power of attorney, have full power and authority to do and perform all
          and every act and duty which is  permitted  or  required to be done by
          the General Partner hereunder.

     D.   Notwithstanding any other provisions of this Agreement or the Act, any
          action of the  General  Partner  on behalf of the  Partnership  or any
          decision  of the General  Partner to refrain  from acting on behalf of
          the Partnership,  undertaken in the good faith belief that such action
          or  omission is  necessary  or  advisable  in order (i) to protect the
          ability of the Company to  continue  to qualify as a REIT;  or (ii) to
          avoid the Company  incurring  any taxes  under  Section 857 or Section
          4981 of the Code, is expressly  authorized under this Agreement and is
          deemed approved by all of the Limited Partners.

     7.10 Title to  Partnership  Assets.  Title to Partnership  assets,  whether
real,  personal or mixed and whether tangible or intangible,  shall be deemed to
be owned by the  Partnership  as an  entity,  and no  Partner,  individually  or
collectively,  shall have any ownership  interest in such Partnership  assets or
any portion thereof.  Title to any or all of the Partnership  assets may be held
in the name of the Partnership,  the General Partner or one or more nominees, as
the General Partner may determine,  including Affiliates of the General Partner.
The General Partner hereby declares and warrants that any Partnership  asset for
which legal  title is held in the name of the General  Partner or any nominee or
Affiliate of the General  Partner  shall be held by the General

                                     - 27 -

<PAGE>
Partner  for the use and  benefit  of the  Partnership  in  accordance  with the
provisions of this Agreement;  provided,  that the General Partner shall use its
best efforts to cause beneficial and record title to such assets to be vested in
the Partnership as soon as reasonably practicable.  All Partnership assets shall
be  recorded  as the  property  of the  Partnership  in its books  and  records,
irrespective  of the name in which  legal  title to such  Partnership  assets is
held.

     7.11 Reliance by Third Parties. Notwithstanding anything to the contrary in
this  Agreement,  any Person dealing with the  Partnership  shall be entitled to
assume that the General Partner has full power and authority, without consent or
approval of any other Partner or Person,  to encumber,  sell or otherwise use in
any manner any and all assets of the Partnership and to enter into any contracts
on  behalf of the  Partnership,  and take any and all  actions  on behalf of the
Partnership,  and such Person shall be entitled to deal with the General Partner
as if the General Partner were the  Partnership's  sole party in interest,  both
legally  and  beneficially.  Each  Limited  Partner  hereby  waives  any and all
defenses  or other  remedies  which  may be  available  against  such  Person to
contest,  negate or disaffirm  any action of the General  Partner in  connection
with any such  dealing.  In no event shall any Person  dealing  with the General
Partner or its  representatives be obligated to ascertain that the terms of this
Agreement have been complied with or to inquire into the necessity or expedience
of any act or action of the  General  Partner or its  representatives.  Each and
every  certificate,  document  or other  instrument  executed  on  behalf of the
Partnership by the General  Partner or its  representatives  shall be conclusive
evidence in favor of any and every Person relying thereon or claiming thereunder
that:  (i) at the  time of the  execution  and  delivery  of  such  certificate,
document or instrument,  this  Agreement was in full force and effect;  (ii) the
Person  executing and delivering  such  certificate,  document or instrument was
duly authorized and empowered to do so for and on behalf of the Partnership; and
(iii) such  certificate,  document or instrument was duly executed and delivered
in accordance  with the terms and  provisions  of this  Agreement and is binding
upon the Partnership.

ARTICLE 8. Rights and Obligations of Limited Partners.

     8.1 Limitation of Liability.  The Limited  Partners shall have no liability
under this Agreement except as expressly  provided in this Agreement,  including
Sections 10.5 and 13.3 hereof, or under the Act.  Notwithstanding  the preceding
sentence, each Limited Partner shall have the right, but not the obligation,  to
guarantee a portion of the  indebtedness  of the  Partnership in accordance with
the terms of the Acquisition Agreement.

     8.2 Management of Business.  No Limited Partner or Assignee (other than the
General Partner, any of its Affiliates or any officer, director, employee, agent
or trustee of the General Partner,  the Partnership or any of their  Affiliates,
in their  capacity  as such)  shall take part in the  operation,  management  or
control (within the meaning of the Act) of the Partnership's business,  transact
any business in the  Partnership's  name or have the power to sign documents for
or otherwise bind the  Partnership.  The 

                                     - 28 -

<PAGE>
transaction of any such business by the General  Partner,  any of its Affiliates
or any officer,  director,  employee,  partner,  agent or trustee of the General
Partner, the Partnership or any of their Affiliates,  in their capacity as such,
shall not affect,  impair or eliminate the  limitations  on the liability of the
Limited Partners or Assignees under this Agreement.

     8.3  Outside  Activities  of Limited  Partners.  Subject to any  agreements
entered  into  pursuant to Section 7.5 hereof and any other  agreements  entered
into by a Limited  Partner or its Affiliates  with the Partnership or any of its
Subsidiaries  including the  Acquisition  Agreement,  any Limited Partner (other
than the Company) and any officer, director, employee, agent, trustee, Affiliate
or shareholder of any Limited Partner (other than the Company) shall be entitled
to and may have business interests and engage in business activities in addition
to  those  relating  to  the  Partnership,   including  business  interests  and
activities  that are in  direct  competition  with the  Partnership  or that are
enhanced by the activities of the  Partnership.  Neither the Partnership nor any
Partners  shall  have any  rights by virtue of this  Agreement  in any  business
ventures of any Limited Partner or Assignee which are permitted within the scope
of this  Section 8.3.  None of the Limited Partners (other than the Company) nor
any other  Person  shall  have any  rights by  virtue of this  Agreement  or the
Partnership  relationship  established  hereby in any  business  ventures of any
other Person and such Person shall have no obligation pursuant to this Agreement
to offer any  interest in any such  business  ventures to the  Partnership,  any
Limited  Partner  or any such other  Person,  even if such  opportunity  is of a
character  which, if presented to the  Partnership,  any Limited Partner or such
other Person, could be taken by such Person.

     8.4 Return of Capital.  Except in connection  with the exercise of Exchange
Rights or Put Rights,  no Limited Partner shall be entitled to the withdrawal or
return of its Capital  Contribution,  except to the extent of distributions made
pursuant to this Agreement or upon  termination  of the  Partnership as provided
herein.  Except to the extent provided by Appendix II, or as otherwise expressly
provided in this  Agreement,  no Limited Partner or Assignee shall have priority
over any other Limited  Partner or Assignee,  either as to the return of Capital
Contributions or as to profits, losses or distributions.

     8.5 Rights of Limited Partners Relating to the Partnership.

     A.   In addition to the other rights  provided by this  Agreement or by the
          Act,  and  except as  limited by Section  8.5B  hereof,  each  Limited
          Partner shall have the right, for a purpose reasonably related to such
          Limited  Partner's  interest as a limited partner in the  Partnership,
          upon written demand with a statement of the purpose of such demand and
          at such  Limited  Partner' s own expense  (including  such  reasonable
          copying  and  administrative   charges  as  the  General  Partner  may
          establish from time to time):  (i) to obtain a copy of the most recent
          annual  and  quarterly  reports  filed  by the  Company  with  the SEC
          pursuant  to  the  Exchange   Act;  (ii)  to  obtain  a  copy  of  the
          Partnership's  federal,  state and local  income tax  returns for each
          Partnership  Year; (iii) to obtain a current list of the name and last
          known business,  residence or mailing

                                     - 29 -

<PAGE>
          address of each Partner;  (iv) to obtain a copy of this  Agreement and
          the  Certificate  and  all  amendments  and/or  restatements  thereto,
          together  with executed  copies of all powers of attorney  pursuant to
          which  this  Agreement,  the  Certificate  and all  amendments  and/or
          restatements  thereto have been  executed;  and (v) to obtain true and
          full  information  regarding the amount of cash and a description  and
          statement  of any  other  property  or  services  contributed  by each
          Partner and which each Partner has agreed to contribute in the future,
          and the date on which each became a Partner.

     B.   Notwithstanding  any other  provision of this Section 8.5, the General
          Partner  may keep  confidential  from the Limited  Partners,  for such
          period  of time as the  General  Partner  determines  in its  sole and
          absolute  discretion to be reasonable,  any  information  that (i) the
          General  Partner  reasonably  believes  to be in the  nature  of trade
          secrets or other confidential information, the disclosure of which the
          General Partner in good faith believes is not in the best interests of
          the  Partnership or the Company or could damage the Partnership or its
          business;  or (ii) the Partnership is required by law or by agreements
          with an unaffiliated third party to keep confidential.

     8.6 Exchange Rights.  The Limited Partners may exchange all or a portion of
their  L.P.  Units for  shares of Common  Stock on the terms and  subject to the
conditions and restrictions contained in the Exchange Rights Agreement.

     8.7 Put Rights.

     A.   Upon the terms and subject to the conditions of this  Agreement,  each
          Limited  Partner  (other  than  Carl E.  Berg and  Clyde J.  Berg with
          respect  to all  L.P.  Units  owned  by  them  beneficially  as of the
          Effective  Date)  shall  have the right to  tender to the  Partnership
          outstanding  L.P.  Units no more than once during any 12-month  period
          commencing  after  December 29, 1999. The  Partnership  shall purchase
          properly  tendered L.P. Units for cash at a price (the "Tender Price")
          equal to the average  market value of the Common Stock price as of the
          date the  Limited  Partner  delivers to the  General  Partner,  at the
          address  provided in Appendix II, a completed and duly executed Letter
          of  Transmittal  in the form  attached  as  Exhibit A to the  Exchange
          Rights  Agreement,  and any other documents  required by the Letter of
          Transmittal.  Only a tender in this  manner  will  constitute  a valid
          tender of L.P.  Units  pursuant  to this  Section  8.7A.  The  General
          Partner shall make all  determinations  as to the validity and form of
          any tender of L.P.  Units in  accordance  with the  provisions of this
          Agreement,  and upon  rejection of a tender,  shall give the tendering
          holder  written  notice of such  rejection,  which  shall  include the
          reasons therefor. Unless otherwise agreed by the General Partner or as
          provided  in Section  8.7C,  tenders of L.P.  Units  pursuant  to this
          Section  8.7A  shall  be  irrevocable  and  shall  not be  subject  to
          withdrawal or modification.

     B.   Within 15 days  after  the valid  tender  of L.P.  Units  pursuant  to
          Section  8.7A,  the Company may make an election to purchase such L.P.
          Units itself with cash of the Company (the "Cash  Election").  If with
          respect to any tender of L.P.  Units pursuant to this Section 8.7, the
          Company makes the Cash Election, then within 90 days after such tender
          the Company  shall pay to the tendering  Limited  Partner an aggregate
          amount of cash equal to the purchase  price of the tendered L.P. Units
          with available cash,

                                     - 30 -

<PAGE>
          borrowed  funds or the proceeds of an offering of new shares of Common
          Stock.  Upon  acquiring  the L.P  Units,  the  Company  may  cause the
          Partnership  to retire  the L.P.  Units and  convert  them to the same
          number of Units of General Partner  Interest,  and the General Partner
          shall amend Appendix I accordingly.

     C.   Notwithstanding  the  foregoing,  if the  purchase  price for the L.P.
          Units tendered by a Limited  Partners in one year exceeds  $1,000,000,
          the   Partnership   or  the  Company   shall  be  entitled  to  reduce
          proportionally  the  number  of L.P.  Units to be  acquired  from each
          Tendering  Partner  so that the total  purchase  price does not exceed
          $1,000,000 if the Company so elects. In addition,  if the Company does
          not timely make the Cash Election,  the Partnership  shall deliver the
          purchase  price for the  tendered  L.P.  Units to the Limited  Partner
          within 45 days after the Letter of  Transmittal  was  delivered to the
          General Partner. The General Partner may defer payment of the purchase
          price until such time not to exceed 120 days after the valid tender of
          L.P.  Units pursuant to Section 8.7A as the  Partnership  has adequate
          Available Cash after payment of the purchase  price, in the reasonable
          judgment  of  the  General  Partner,  to  fund  current  distributions
          necessary for the Company to satisfy the REIT  Requirements  following
          the waiver by the Company of its right to make the Cash  Election.  In
          such  event,  the General  Partner  shall give the  tendering  Limited
          Partner  written  notice of its  decision to defer the payment  with a
          calculation  supporting the General Partner's  determination within 20
          days after the Letter of  Transmittal  was  delivered  to the  General
          Partner.  Upon receiving such notice, the Limited Partner may withdraw
          the tender. In addition,  the Limited Partner may instead exercise its
          rights  under the  Exchange  Rights  Agreement.  If a Limited  Partner
          tenders L.P. Units  pursuant to this Section 8.7, the Limited  Partner
          shall pay the amount of any additional  documentary,  stamp or similar
          issue or transfer tax which is due, and shall be  responsible  for all
          income or other taxes as a result of such exchange.

     D.   Each  tender of L.P.  Units  shall  constitute  a  representation  and
          warranty   by  the   tendering   Limited   Partner   of  each  of  the
          representations  and  warranties  set  forth in the form of  Letter of
          Transmittal.

     E.   Until the holder of L.P.  Units  tendered  pursuant to Section 8.7 has
          received  cash  in  exchange  therefor,  such  Limited  Partner  shall
          continue  to hold and own such  L.P.  Units for all  purposes  of this
          Agreement.

                                     - 31 -



<PAGE>
     8.8 New Equity Financing Rights.

     A.   If the General Partner  determines that it is in the best interests of
          the  Partnership  to obtain  additional  funds through the issuance of
          additional  Partnership  Interests,  the General  Partner  shall first
          offer to the Limited Partners in each of the  partnerships  comprising
          the Operating  Partnership,  including the  Partnership,  the right of
          first refusal to purchase that portion of such additional  Partnership
          Interests  which their  respective  numbers of L.P.  Units bear to the
          total number of outstanding  L.P. Units in the Operating  Partnership.
          The General Partner shall make this offer pursuant to a written notice
          describing  the  offering  price,   class  or  series  of  Partnership
          Interest, and all other material terms of the offer. Such notice shall
          be sent to each Limited  Partner at the address  reflected in Appendix
          I, as amended.  The Limited  Partners shall have 10 days from the date
          of such notice to elect to purchase  any such  additional  Partnership
          Interests.   Such  election  shall  be  made  pursuant  to  a  written
          subscription form specifying the number of Units of additional Limited
          Partnership  Interests the Limited  Partner intends to acquire and the
          total  purchase  price  therefor,  and shall be signed by the  Limited
          Partner and delivered to the General  Partner at the address set forth
          on Appendix I. After such 10-day period,  the General Partner shall be
          free  to  offer  any  additional  Limited  Partnership   Interests  on
          substantially similar terms to non-Partners and Partners alike.

     B.   The  foregoing  right of the Limited  Partners  to acquire  additional
          equity  interests  offered by the Partnership  ("New Equity  Financing
          Right")  shall  not  apply  to any  offering  (i)  which  is part of a
          transaction in which the Limited  Partners had the ability to exercise
          their New Equity Financing Rights under the Acquisition Agreement with
          respect to an offering of Equity  Securities  by the Company,  (ii) in
          connection  with a merger or other  business  combination  subject  to
          approval by the L.P. Unit Majority pursuant to Section 8.9, (iii) to a
          Person in connection  with the  acquisition of property or services by
          the Partnership from such Person, or (iv) of any Partnership  Interest
          upon conversion of an outstanding  Equity Security of the Partnership,
          any Partnership Subsidiary, or the Company.

     8.9 Matters Requiring L.P. Unit Majority Approval.

     The consent of the L.P.  Unit Majority will be required with respect to the
following  actions  involving  the  Partnership:  (i)  the  material  amendment,
modification or termination of the Agreement;  (ii) a general assignment for the
benefit of creditors or the appointment of a custodian,  receiver or trustee for
any of the assets of the  Partnership;  (iii) the  institution of any proceeding
for bankruptcy of the Partnership;  (iv) the Transfer of any General Partnership
Interests,  including  transfers  attendant  to  any  merger,  consolidation  or
liquidation  of the  Company  except as  otherwise  provided  in 11.2C;  (v) the
admission of any additional or substitute  General  Partner in the  Partnership;
and (vi) a Change of Control  Transaction.  In  addition,  until the  Protective
Provisions  Expiration  Date, the consent of the L.P. Unit Majority will also be
required  with respect to: (i) any  Terminating  Capital  Transaction;  (ii) the
dissolution  and  liquidation of the  Partnership;  and (iii) the  Partnership's
issuance of Limited Partner

                                     - 32 -

<PAGE>
Interests  having  seniority  over the L.P.  Units with respect to  distributing
assets, and voting rights.

     8.10  Approval  of Certain  Taxable  Sales.  Until the earlier of the tenth
anniversary of the closing of the Berg Acquisition and the Protective Provisions
Expiration  Date, the General  Partner must obtain the prior written  consent of
Carl E. Berg,  and upon Carl  Berg's  death if prior to the  expiration  of this
provision,  Clyde J. Berg, before effecting any sale or other transfer of any of
the Properties identified on Schedules 1, 2, 3 or 5 to the Acquisition Agreement
on behalf of the Partnership  which results in the recognition of taxable income
by any member of the Berg Group  under the Code.  Until the earlier of the tenth
anniversary of the Berg  Acquisition  and the date on which John T.  Kontrabecki
ceases to  beneficially  own at least 750,000 L.P.  Units,  the General  Partner
shall obtain his prior  written  consent  prior to  effecting  any sale or other
transfer  of  any of  the  Properties  (identified  in  Schedules  4 or 5 to the
Acquisition  Agreement)  as owned by  Kontrabecki,  Triangle  Partners,  or Berg
Ventures  II,  which  will  result  in the  recognition  of  taxable  income  by
Kontrabecki under the Code.

ARTICLE 9. Books, Records, Accounting and Reports.

     9.1 Records and Accounting.

     The General Partner shall keep or cause to be kept at the principal  office
of the Partnership those records and documents  required to be maintained by the
Act and other books and records deemed by the General  Partner to be appropriate
with respect to the Partnership's business,  including,  without limitation, all
books and records  necessary to comply with applicable REIT  Requirements and to
provide to the Limited Partners any  information,  lists and copies of documents
required to be provided  pursuant to Sections  8.5A and 9.3 hereof.  Any records
maintained  by or on  behalf of the  Partnership  in the  regular  course of its
business  may be kept on,  or be in the form of,  punch  cards,  magnetic  tape,
photographs,  micrographics or any other  information  storage device,  provided
that the records so maintained are convertible into clearly legible written form
within a  reasonable  period  of time.  The  books of the  Partnership  shall be
maintained,  for financial and tax  reporting  purposes,  on an accrual basis in

                                     - 33 -


<PAGE>
accordance with GAAP, or such other basis as the General  Partner  determines to
be necessary or appropriate.

     9.2 Fiscal Year. The fiscal year of the  Partnership  shall be the calendar
year.

ARTICLE 10.     Tax Matters.

     10.1 Preparation of Tax Returns.  The General Partner shall arrange for the
preparation and timely filing of all  Partnership  returns for federal and state
income tax  purposes  and shall use all  reasonable  efforts to furnish,  within
sixty  (60)  days  of the  close  of each  taxable  year,  the  tax  information
reasonably  required by Limited  Partners for their federal and state income tax
reporting purposes.

     10.2 Tax Elections.  The General Partner shall elect for the Partnership to
be considered a limited  partnership on all applicable  federal and state income
tax returns to be filed by the Partnership. Except as otherwise provided herein,
the  General  Partner  shall,  in its sole and  absolute  discretion,  determine
whether  to  make  any  other   available   election   pursuant   to  the  Code.
Notwithstanding  the above,  in making any such tax election the General Partner
shall take into account the tax consequences to the Limited  Partners  resulting
from any such  election.  The General  Partner  shall make such tax elections on
behalf of the Partnership as the L.P. Unit Majority  request,  provided that the
General  Partner  believes that such election is not adverse to the interests of
the General Partner, including its interest in preserving its qualification as a
REIT  under  the  Code.  In  addition,  the  General  Partner  shall  elect  the
"traditional   method"  of  making  Section  704(c)   allocations   pursuant  to
Regulations  Section 1.704-3 with respect to each Property under the Acquisition
Agreement.  The General  Partner  shall have the right to seek to revoke any tax
election it makes  (other than the  election  to use the  traditional  method of
making  the  Section  704(c)  allocations   described  in  this  Section  10.2),
including,  without limitation, the election under Section 754 of the Code, upon
the General Partner' s determination,  in its sole and absolute discretion, that
such  revocation  is in the best  interests of the Limited  Partners  taken as a
whole and with the  approval  of the L.P.  Unit  Majority  until the  Protective
Provisions Expiration Date. All such elections and determinations may be made on
a  Property-by-Property  basis,  and the  General  Partner  shall be required to
analyze the impact of all such elections and determinations on that basis.

     10.3 Tax Matters Partner.

     A.   The  General  Partner  shall  be  the  "tax  matters  partner"  of the
          Partnership  for  federal  income tax  purposes.  Pursuant  to Section
          6230(e) of the Code, upon receipt of notice from the Internal  Revenue
          Service of the beginning of an administrative  proceeding with respect
          to the Partnership, the tax matters partner shall furnish the Internal
          Revenue  Service  with  the  name,  address,  taxpayer  identification
          number,  and Percentage  Interest of each of the Limited  Partners and
          the  Assignees;  provided,  that such  information  is provided to the
          Partnership by the Limited Partners and the Assignees.

                                     - 34 -

<PAGE>
     B.   The tax matters partner is authorized, but not required:

          (1)  to enter into any settlement  with the Internal  Revenue  Service
               with respect to any  administrative  or judicial  proceedings for
               the  adjustment of  Partnership  items  required to be taken into
               account by a Partner for income tax purposes (such administrative
               proceedings  being referred to as a "tax audit" and such judicial
               proceedings being referred to as "judicial  review"),  and in the
               settlement  agreement the tax matters partner may expressly state
               that such  agreement  shall bind all  Partners,  except that such
               settlement  agreement  shall not bind any Partner (i) who (within
               the time prescribed pursuant to the Code and Regulations) files a
               statement with the Internal  Revenue  Service  providing that the
               tax matters  partner shall not have the authority to enter into a
               settlement  agreement on behalf of such Partner; or (ii) who is a
               "notice  partner" (as defined in Section  6231(a)(8) of the Code)
               or a member of a "notice group" (as defined in Section 6223(b)(2)
               of the Code);

          (2)  in the event that a notice of a final  administrative  adjustment
               at the  Partnership  level of any item  required to be taken into
               account by a Partner for tax purposes (a "final  adjustment")  is
               mailed to the tax matters  partner,  to seek  judicial  review of
               such final  adjustment,  including  the filing of a petition  for
               readjustment  with the Tax Court or the filing of a complaint for
               refund with the United States Claims Court or the District  Court
               of the United States for the district in which the  Partnership's
               principal place of business is located;

          (3)  to  intervene  in any  action  brought by any other  Partner  for
               judicial review of a final adjustment;

          (4)  to file a  request  for an  administrative  adjustment  with  the
               Internal  Revenue Service and, if any part of such request is not
               allowed by the Internal Revenue  Service,  to file an appropriate
               pleading (petition or complaint) for judicial review with respect
               to such request;

          (5)  to enter into an agreement with the Internal  Revenue  Service to
               extend the period for assessing any tax which is  attributable to
               any item  required  to be taken  account of by a Partner  for tax
               purposes, or an item affected by such item; and

          (6)  to take  any  other  action  on  behalf  of the  Partners  or the
               Partnership in connection  with any tax audit or judicial  review
               proceeding  to  the  extent   permitted  by  applicable   law  or
               regulations.

          The taking of any action  and the incurring of any expense  by the tax
          matters partner in  connection with any such proceeding, except to the
          extent  required  by  law,  is  a  matter in  the  sole  and  absolute
          discretion of the tax  matters partner  and the provisions relating to
          indemnification  of the  General Partner set  forth in

                                     - 35 -

<PAGE>
          Sectio  7.6 of this  Agreement  shall be fully  applicable  to the tax
          matters partner in its capacity as such.

     C.   The  tax  matters  partner  shall  receive  no  compensation  for  its
          services.  All third  party  costs and  expenses  incurred  by the tax
          matters partner in performing its duties as such (including  legal and
          accounting  fees and  expenses)  shall  be  borne by the  Partnership.
          Nothing  herein shall be construed  to restrict the  Partnership  from
          engaging  an  accounting  firm to assist  the tax  matters  partner in
          discharging its duties hereunder,  so long as the compensation paid by
          the Partnership for such services is reasonable.

     10.4  Organizational  Expenses.  The  Partnership  shall  elect  to  deduct
expenses,  if any,  incurred by it in organizing the Partnership  ratably over a
60-month period as provided in Section 709 of the Code.

     10.5 Withholding. Each Limited Partner hereby authorizes the Partnership to
withhold from, or pay on behalf of or with respect to, such Limited  Partner any
amount of federal,  state,  local,  or foreign  taxes that the  General  Partner
determines  that the  Partnership is required to withhold or pay with respect to
any amount  distributable  or allocable to such Limited Partner pursuant to this
Agreement,  including,  without limitation, any taxes required to be withheld or
paid by the Partnership  pursuant to Sections 1441,  1442,  1445, or 1446 of the
Code.  Any amount paid on behalf of or with respect to a Limited  Partner  shall
constitute a loan by the Partnership to such Limited  Partner,  which loan shall
be repaid by such Limited  Partner  within 15 days after notice from the General
Partner that such payment must be made unless (i) the Partnership withholds such
payment  from a  distribution  which  would  otherwise  be made  to the  Limited
Partner;  or (ii) the  General  Partner  determines,  in its  sole and  absolute
discretion,  that such payment may be  satisfied  out of the amount of Available
Cash which would,  but for such payment,  be distributed to the Limited Partner.
Any  amounts  withheld  pursuant to the  foregoing  clauses (i) or (ii) shall be
treated as having been distributed to such Limited Partner. Each Limited Partner
hereby  unconditionally  and  irrevocably  grants to the  Partnership a security
interest in such Limited Partner' s Partnership  Interest to secure such Limited
Partner's  obligation to pay to the Partnership any amounts  required to be paid
pursuant to this Section 10.5. In the event that a Limited  Partner fails to pay
when due any amounts owed to the Partnership  pursuant to this Section 10.5, the
General  Partner  may, in its sole and  absolute  discretion,  elect to make the
payment to the Partnership on behalf of such defaulting Limited Partner,  and in
such event shall be deemed to have loaned such amount to such defaulting Limited
Partner  and shall  succeed to all rights and  remedies  of the  Partnership  as
against such defaulting Limited Partner. Without limitation,  in such event, the
General  Partner  shall  have the  right to  receive  distributions  that  would
otherwise be distributable to such defaulting Limited Partner until such time as
such loan,  together with all interest  thereon,  has been paid in full, and any
such distributions so received by the General Partner shall be treated as having
been  distributed to the defaulting  Limited Partner and immediately paid by the
defaulting Limited Partner to the General Partner in repayment of such loan. Any
amount payable by a Limited Partner 

                                     - 36 -

<PAGE>
hereunder  shall bear  interest  at the  highest  base or prime rate of interest
published from time to time by any of Wells Fargo Bank,  N.A., plus 4 percentage
points,  but in no event higher than the maximum lawful rate of interest on such
obligation,  such interest to accrue from the date such amount is due (i.e.,  15
days after demand) until such amount is paid in full. Each Limited Partner shall
take such actions as the  Partnership  or the General  Partner  shall request in
order to perfect or enforce the security interest created hereunder.

ARTICLE 11.     Transfers and Withdrawals.

     11.1 Transfer.

     A.   The term  "Transfer"  when used in this  Article 11 with  respect to a
          Unit,  shall be deemed to refer to a transaction  by which the General
          Partner  purports  to assign  all or any part of its  General  Partner
          Interest to another Person or by which a Limited  Partner  purports to
          assign  all or any part of its  Limited  Partner  Interest  to another
          Person.  The term  "Transfer"  when used in this  Article  11 does not
          include any exchange of L.P. Units for shares of Common Stock pursuant
          to the Exchange Rights Agreement.

     B.   No  Partnership  Interest shall be  Transferred,  in whole or in part,
          except in accordance  with the terms and  conditions set forth in this
          Article  11. Any  Transfer  or  purported  Transfer  of a  Partnership
          Interest not made in accordance with this Article 11 shall be null and
          void.

     11.2 Transfer of the Company's Partnership Interests.

     A.   The General  Partner may not  withdraw as General  Partner or transfer
          its General Partner  Interest or Limited  Partner  Interest unless (i)
          the L.P.  Unit  Majority  (excluding  L.P.  Units held by the Company)
          consents to such Transfer or  withdrawal,  or (ii) such Transfer is to
          an entity which is wholly-owned by the Company and is a Qualified REIT
          Subsidiary under Section 856(i) of the Code.

     B.   In the event the  General  Partner  withdraws  as  General  Partner in
          accordance with Section 11.2A, the General  Partner's  General Partner
          Interest  shall  immediately  be  converted  into  a  Limited  Partner
          Interest.

     11.3 Limited Partners' Rights to Transfer.

     A.   Subject to the  provisions  of this Section  11.3,  a Limited  Partner
          (other  than the  Company)  may,  without  the  consent of the General
          Partner:

          (a)  if such Limited  Partner is a partnership or a limited  liability
               company,  Transfer  such  Limited  Partner's  L.P.  Units  to any
               partner of such  Limited  Partner  or any member of such  limited
               liability company;

                                     - 37 -

<PAGE>
          (b)  Transfer such Limited  Partner's  L.P. Units to any other Limited
               Partner; and

          (c)  pledge  such  Limited  Partner's  L.P.  Units  to  any  financial
               institution as collateral for any loan with respect to which such
               Limited Partner is personally liable.

     B.   Subject to the provisions of this Section 11.3, a Limited  Partner may
          Transfer  any of such  Limited  Partner's  L.P.  Units,  other than in
          accordance with Section 11.3A,  only with the prior written consent of
          the General Partner which may be withheld in its sole discretion.

     C.   If  a  Limited  Partner  is  subject  to  Incapacity,   the  executor,
          administrator,  trustee, committee,  guardian, conservator or receiver
          of such  Limited  Partner's  estate  shall have all of the rights of a
          Limited  Partner,  but not more  rights  than  those  enjoyed by other
          Limited  Partners,  for the purpose of settling or managing the estate
          and such  power as the  Incapacitated  Limited  Partner  possessed  to
          Transfer  all or any part of his or its  interest in the  Partnership.
          The  Incapacity  of a Limited  Partner,  in and of  itself,  shall not
          dissolve or terminate the Partnership.

     D.   No Transfer by a Limited  Partner of its L.P. Units may be made to any
          Person if (i) in the opinion of legal counsel for the Partnership,  it
          would  result  in the  Partnership  being  treated  as an  association
          taxable  as  a  corporation;   (ii)  such  Transfer  would  cause  the
          Partnership  to become,  with  respect to any  Employee  Benefit  Plan
          subject  to Title I of ERISA,  a  "party-in-interest"  (as  defined in
          Section  3(14) of ERISA) or a  "disqualified  person"  (as  defined in
          Section  4975(c)  of the  Code);  (iii) such  Transfer  would,  in the
          opinion of legal counsel for the Partnership, cause any portion of the
          assets of the Partnership to constitute assets of any Employee Benefit
          Plan pursuant to Department of Labor Regulations  Section  2510.2-101;
          (iv) such Transfer would subject the  Partnership to regulation  under
          the Investment  Company Act of 1940,  the  Investment  Advisors Act of
          1940 or ERISA;  or (v) such  Transfer is a sale or exchange,  and such
          sale or  exchange  would,  when  aggregated  with all other  sales and
          exchanges  during  the  12-month  period  ending  on the  date  of the
          proposed Transfer, result in a Change of Control Transaction.

     E.   Subject to the  foregoing  provisions of Section 11.3 and the terms of
          Section  12.2,  a  Limited  Partner  may  transfer  L.P.  Units  to an
          Affiliate and have such Affiliate become a Limited Partner.

     In addition to the conditions set forth in Sections  11.3D,  11.4, and 12.2
any Transfer pursuant to this Article 11 is subject to the following conditions:

          (1) unless  such  Transfer  is being  made  pursuant  to an  effective
     registration statement under the Securities Act, or pursuant to Rule 144 or
     Rule 144A thereunder, the transferring Limited Partner shall deliver to the
     Company a notice with respect to the proposed  transfer,  together  with an
     opinion  of  counsel  in form and  substance  satisfactory  to the  General
     Partner prepared by counsel reasonably

                                     - 38 -

<PAGE>
     satisfactory  to  the  General  Partner   (which  shall  include,   without
     limitation, counsel to each of the Limited Partners as of the date hereof),
     to the effect that an exemption from  registration and qualification  under
     such Securities Act is available;

          (2) the  transferring  Limited  Partner and its transferee  shall each
     provide  a  certificate  to the  General  Partner,  in form  and  substance
     satisfactory  to the General  Partner,  to the effect that (i) the proposed
     transfer will not be effected on or through (a) a United  States  national,
     regional or local securities exchange, (b) a foreign securities exchange or
     (c) an interdealer quotation system that regularly disseminates firm buy or
     sell  quotations  by  identified  brokers  or dealers  (including,  without
     limitation,  the Nasdaq) by electronic  means or otherwise,  and (ii) it is
     not, and the proposed  transfer  will not be made by,  through or on behalf
     of, (a) a Person who regularly  quotes equity interests in the Partnership,
     such as a broker or  dealer  making a market  in  equity  interests  in the
     Partnership  or (b) a Person who  regularly  makes  available to the public
     (including  customers or  subscribers)  bid or offer quotes with respect to
     equity  interests in the Partnership and stands ready to effect buy or sell
     transactions  at the  quoted  prices  for  itself or on  behalf of  others;
     provided,  however,  that such  certificate  shall not be required  for any
     transfer in connection with a registered public offering;

          (3) the  transferee  must be a United States Person for federal income
     tax purposes; and

          (4) such transfer must not cause the  Partnership to terminate or lose
     its status as a partnership for tax purposes.

     F.   If it shall  become  unlawful  for any Limited  Partner to continue to
          hold some or all of the L.P. Units held by such Limited Partner, or by
          reason of legal or  regulatory  restrictions  the cost to such Limited
          Partner to continue to hold such L.P.  Units (in relation to the value
          of such L.P.  Units to such Limited  Partner)  has, in the  reasonable
          judgment  of  such  Limited  Partner,  significantly  increased,  such
          Limited  Partner may, at any time  following  the date three  business
          days after the delivery by such Limited Partner to the General Partner
          a notice of the existence of any such restriction, Transfer all or any
          portion of the L.P.  Units held by such  Limited  Partner  free of any
          restrictions   imposed   under  this   Agreement   (other  than  those
          restrictions  required by federal or state laws, including securities,
          and tax, laws, and subject to the prospective  transferee  meeting the
          requirements of Section 12.2, and provided that the transferee Limited
          Partner shall hold its L.P.  Units subject to all of the terms of this
          Agreement);  but only if such Limited Partner cannot then exercise its
          Exchange  Rights or Put Rights for cash,  and the Company has notified
          the Limited  Partner  that the Company will not register for offer and
          sale all  shares of  Common  Stock  issued  upon the  exercise  of the
          Exchange Rights within 90 days. In connection  therewith,  the Company
          shall assist such Limited  Partner in disposing of the L.P. Units held
          by it in a prompt  and  orderly  manner,  and (at the  request of such
          Limited Partner) make available (and authorize such Limited Partner to
          make available  through the Company)  financial and other  information
          concerning  the  Company  and  its  Subsidiaries  (including,  without
          limitation,  the  information  described  in Rule  144A(d)(4))  to any
          prospective  purchaser  of

                                     - 39 -

<PAGE>
          such L.P. Units (it being agreed that such prospective purchaser shall
          be either an "accredited investor"  within the meaning of Rule 501 (a)
          under the  Securities  Act or a "qualified institutional buyer" within
          the meaning of  Rule 144A(d)(1) under such Act to the extent that such
          L.P. Units are "restricted securities" as such term is defined in Rule
          144).  The Company may require  that each such  prospective  purchaser
          keep confidential, pursuant to customary confidentiality requirements,
          any information received by it pursuant to this provision.

     11.4 Substituted Limited Partners. The General Partner shall have the right
to consent to the admission of a transferee  who receives L.P. Units pursuant to
Section  11.3A,  C, or E, which  consent may be given or withheld by the General
Partner in its sole and absolute  discretion.  The General  Partner's failure or
refusal to permit such transferee to become a Substituted  Limited Partner shall
not give rise to any cause of action against the Partnership or any Partner.

     11.5  Assignees.   If  the  General  Partner,  in  its  sole  and  absolute
discretion, does not consent to the admission of any transferee as a Substituted
Limited  Partner,  as  described  in  Section  11.4,  such  transferee  shall be
considered  an Assignee for  purposes of this  Agreement.  An Assignee  shall be
deemed  to  have  had   assigned  to  it,  and  shall  be  entitled  to  receive
distributions  from the Partnership and the share of Net Income,  Net Losses and
any other Tax Items with respect to the L.P. Units assigned to such  transferee,
but shall not be deemed to be a holder of L.P. Units for any other purpose under
this Agreement,  and shall not be entitled to vote such L.P. Units in any matter
presented to the Limited  Partners  for a vote (such L.P.  Units being deemed to
have been voted on such matter in the same  proportion  as all other L.P.  Units
held by Limited Partners are voted). In the event the Assignee desires to make a
further assignment of any such L.P. Units, such Assignee shall be subject to all
of the  provisions  of this Article 11 to the same extent and in the same manner
as any Limited Partner desiring to make an assignment of L.P. Units.

     11.6 Effect of  Prohibited  Transfer.  Any  transfer  made in  violation of
Article 11 shall be null and void and of no force and effect.

     11.7 General Provisions.

     A.   No Limited Partner may withdraw from the  Partnership  other than as a
          result of a permitted  Transfer of all of such Limited Partner' s L.P.
          Units in accordance with this Article 11, or pursuant to the tender or
          exchange  of all of its L.P.  Units  pursuant  to the  exercise of Put
          Rights or Exchange Rights.

     B.   Any Limited  Partner  who shall  Transfer  all of its L.P.  Units in a
          Transfer  permitted  pursuant  to this  Article 11 shall cease to be a
          Limited Partner upon the admission of all Assignees of such L.P. Units
          as Substituted  Limited Partners.  Similarly,  any Limited Partner who
          shall  Transfer all of its L.P. Units pursuant to a tender or exchange
          of all of its L.P.  Units  pursuant  to the  exercise of Put Rights or
          Exchange Rights shall cease to be a Limited Partner.

                                     - 40 -


<PAGE>
     C.   Without  the  consent  of the  General  Partner,  permitted  Transfers
          pursuant to this Article 11 may be made effective only as of the first
          day of a Quarter.

     D.   If any Partnership Interest is transferred or assigned during the year
          in  compliance  with the  provisions  of this  Article 11, or redeemed
          pursuant to Section 8.7, or exchanged  pursuant to the Exchange Rights
          Agreement on any day other than the first day of a  Partnership  Year,
          the Net Income, Net Losses, each item thereof, and all other Tax Items
          attributable  to such  interest  for such  Partnership  Year  shall be
          divided  and  allocated   between  the  transferor   Partner  and  the
          transferee  Partner by taking into  account  their  varying  interests
          during the  Partnership  Year in accordance with Section 706(d) of the
          Code,  using the  interim  closing  of the books  method.  Solely  for
          purposes  of  making  such  allocations,  each of such  items  for the
          calendar  month in which the  Transfer or  assignment  occurs shall be
          allocated to the  transferee  Partner,  and none of such items for the
          calendar  month in which an exchange  occurs shall be allocated to the
          exchanging Partner,  provided,  however,  that the General Partner may
          adopt such other  conventions  relating to  allocations  in connection
          with  transfers,  assignments,  or  exchanges  as  it  determines  are
          necessary  or  appropriate.   All   distributions  of  Available  Cash
          attributable  to such L.P. Units with respect to which the Partnership
          Record  Date is  before  the  date of such  transfer,  assignment,  or
          exchange  shall be made to the  transferor  Partner or the  exchanging
          Partner,  as the  case  may  be,  and in the  case  of a  Transfer  or
          assignment other than an exchange, all distributions of Available Cash
          thereafter  attributable  to  such  L.P.  Units  shall  be made to the
          transferee Partner.

ARTICLE 12.     Admission of Partners.

     12.1  Admission of  Successor  General  Partner.  A successor to all of the
General  Partner  Interest  pursuant  to Article 11 hereof who is proposed to be
admitted as a successor  General Partner shall be admitted to the Partnership as
the General  Partner,  effective upon the Transfer.  Any such  transferee  shall
carry on the business of the Partnership without dissolution.  In each case, the
admission  shall be subject  to the  successor  General  Partner  executing  and
delivering to the  Partnership  an acceptance of all of the terms and conditions
of this  Agreement,  the  Acquisition  Agreement,  and such other  documents  or
instruments  as may be  required  to effect the  admission.  In the case of such
admission on any day other than the first day of a Partnership  Year,  all items
attributable to the General Partner  Interest for such Partnership Year shall be
allocated  between  the  transferring  General  Partner  and such  successor  as
provided in Section 11.6D.

     12.2 Admission of Additional and Substituted Limited Partners.

     A.   A Person  who  makes a  Capital  Contribution  to the  Partnership  in
          accordance  with  this  Agreement  after  the  Effective  Date  and  a
          Permitted  Transferee  pursuant to Article 11 shall be admitted to the
          Partnership as an Additional Limited Partner or a Substituted  Limited
          Partner only upon  furnishing  to the General  Partner (i) evidence of
          acceptance in form  satisfactory  to the General Partner of all of the
          terms and conditions of this Agreement and the Acquisition  Agreement,
          including,  without  limitation,  the  power of  attorney  granted  in
          Section 2.4 hereof and (ii) such other

                                     - 41 -

<PAGE>
          documents or instruments as may be  required  in the discretion of the
          General  Partner  in  order  to  effect  such Person's admission as an
          Additional Limited Partner.

     B.   Notwithstanding  anything to the  contrary in this  Section  12.2,  no
          Person  shall  be  admitted  as an  Additional  Limited  Partner  or a
          Substituted  Limited  Partner  without  the  consent  of  the  General
          Partner,  which  consent  may be  given  or  withheld  in the  General
          Partner's sole and absolute discretion. The admission of any Person as
          an Additional  Limited Partner or a Substituted  Limited Partner shall
          become  effective  on the date upon  which the name of such  Person is
          recorded on the books and records of the  Partnership,  following  the
          consent of the General Partner to such admission.

     C.   If any Additional  Limited  Partner is admitted to the  Partnership on
          any day  other  than the  first day of a  Partnership  Year,  then Net
          Income, Net Losses,  each other Tax Item and all other items allocable
          among  Partners  and  Assignees  for such  Partnership  Year  shall be
          allocated among such Additional Limited Partner and all other Partners
          and Assignees by taking into account their  varying  interests  during
          the  Partnership  Year in accordance  with Section 706(d) of the Code,
          using the interim closing of the books method.  Solely for purposes of
          making such allocations,  each of such items for the calendar month in
          which an admission of any Additional  Limited  Partner occurs shall be
          allocated  among all of the Partners  and  Assignees,  including  such
          Additional  Limited Partner.  All distributions of Available Cash with
          respect  to which the  Partnership  Record  Date is before the date of
          such admission  shall be made solely to Partners and Assignees,  other
          than  the  Additional  Limited  Partner,   and  all  distributions  of
          Available  Cash  thereafter  shall be made to all of the  Partners and
          Assignees, including such Additional Limited Partner.

     D.   A transferee who has been admitted as a Substituted Limited Partner or
          an Additional Limited Partner shall have all the rights and powers and
          be  subject  to all the  restrictions  and  liabilities  of a  Limited
          Partner under this Agreement.

     12.3 Amendment of Agreement and Certificate of Limited Partnership. For the
admission to the Partnership of any Partner,  the General Partner shall take all
steps  necessary  and  appropriate  under  the Act to amend the  records  of the
Partnership  and, if necessary,  to prepare as soon as practical an amendment of
this  Agreement  (including an amendment of Appendix I) and, if required by law,
shall prepare and file an amendment to the  Certificate and may for this purpose
exercise the power of attorney granted pursuant to Section 2.4 hereof.

ARTICLE 13.     Dissolution, Liquidation and Termination.

     13.1  Dissolution.  The Partnership shall not be dissolved by the admission
of  Substituted  Limited  Partners  or  Additional  Limited  Partners  or by the
admission of a successor  General  Partner in accordance  with the terms of this
Agreement.  In the event of the withdrawal of the General Partner, any successor
General Partner shall continue the business of the Partnership.  The Partnership
shall dissolve,  and its affairs

                                     - 42 -

<PAGE>
shall be  wound  up,  only  upon  the  first  to  occur of any of the  following
("Liquidating Events"):

     (i)  the expiration of its term as provided in Section 2.5 hereof;

     (ii) an event of withdrawal of the General  Partner,  as defined in the Act
          (other than an event of bankruptcy), unless, within 90 days after such
          event of withdrawal a majority in interest of the  remaining  Partners
          agree in writing to continue  the business of the  Partnership  and to
          the  appointment,  effective  as  of  the  date  of  withdrawal,  of a
          successor General Partner;

     (iii)from and after the date of this Agreement  through  December 31, 2048,
          an election to dissolve the Partnership  made by the General  Partner,
          with the Consent of Limited  Partners  holding  66-2/3% or more of the
          L.P. Units (including L.P. Units held by the Company);

     (iv) on or after January 1, 2049,  an election to dissolve the  Partnership
          made by the General Partner, in its sole and absolute discretion;

     (v)  entry of a decree of judicial  dissolution of the Partnership pursuant
          to the provisions of the Act;

     (vi) the sale of all or  substantially  all of the assets and properties of
          the Partnership;

     (vii)a final and non-appealable judgment is entered by a court of competent
          jurisdiction ruling that the General Partner is bankrupt or insolvent,
          or a final and  non-appealable  order for relief is entered by a court
          with appropriate  jurisdiction  against the General  Partner,  in each
          case under any federal or state  bankruptcy or insolvency  laws as now
          or  hereafter  in effect,  unless  prior to the entry of such order or
          judgment all of the  remaining  Partners  agree in writing to continue
          the business of the Partnership and to the  appointment,  effective as
          of a date prior to the date of such order or judgment, of a substitute
          General Partner.

     13.2 Winding Up.

     A.   Upon the  occurrence of a Liquidating  Event,  the  Partnership  shall
          continue  solely for the  purposes  of  winding  up its  affairs in an
          orderly manner,  liquidating its assets,  and satisfying the claims of
          its creditors  and Partners.  No Partner shall take any action that is
          inconsistent with, or not necessary to or appropriate for, the winding
          up of the Partnership's business and affairs. The General Partner, or,
          in the event there is no remaining General Partner, any Person elected
          by  Limited  Partners  holding  at  least a  majority  of the  Limited
          Partnership  Interests (the General Partner or such other Person being
          referred  to herein as the  "Liquidator"),  shall be  responsible  for
          overseeing the winding up and dissolution of the Partnership and shall
          take full account of the  Partnership's  liabilities  and property and
          the  Partnership  property  shall  be  liquidated  as  promptly  as is
          consistent  with  obtaining the fair value  thereof,  and the

                                     - 43 -

<PAGE>
          proceeds therefrom (which may, to the extent determined by the General
          Partner,  include shares of beneficial interest or other securities of
          the Company) shall be applied and distributed in the following order:

          (i)  First,  to the payment and discharge of all of the  Partnership's
               debts and liabilities to creditors other than the Partners;

          (ii) Second,  to the payment and discharge of all of the Partnership's
               debts and liabilities to the General Partner;

          (iii)Third,  to the payment and discharge of all of the  Partnership's
               debts and liabilities to the other Partners;

          (iv) Fourth, to the General Partner and Limited Partners to the extent
               of and in accordance with the positive  balances in their Capital
               Accounts,    after   giving   effect   to   all    contributions,
               distributions, and allocations for all periods; and

          (v)  The  balance,   if  any,  to  the  Partners  according  to  their
               Percentage Interests.

The  General  Partner  shall not  receive any  additional  compensation  for any
services performed pursuant to this Article 13.

     B.   Notwithstanding  the  provisions of Section 13.2A hereof which require
          liquidation of the assets of the Partnership, but subject to the order
          of priorities  set forth therein,  if prior to or upon  dissolution of
          the  Partnership  the Liquidator  determines that an immediate sale of
          part or all of the Partnership's  assets would be impractical or would
          cause undue loss to the Partners,  the Liquidator may, in its sole and
          absolute  discretion,  defer for a reasonable  time the liquidation of
          any  asset  except  those  necessary  to  satisfy  liabilities  of the
          Partnership   (including  to  those  Partners  as  creditors)   and/or
          distribute to the Partners,  in lieu of cash, as tenants in common and
          in accordance  with the provisions of Section 13.2A hereof,  undivided
          interests  in such  Partnership  assets  as the  Liquidator  deems not
          suitable for liquidation. Any such distributions in kind shall be made
          only  if,  in  the  good  faith  judgment  of  the  Liquidator,   such
          distributions  in kind are in the best interests of the Partners,  and
          shall be subject to such  conditions  relating to the  disposition and
          management of such properties as the Liquidator  deems  reasonable and
          equitable  and to any  agreements  governing  the  operation  of  such
          properties  at such time.  The  Liquidator  shall  determine  the fair
          market value of any property distributed in kind using such reasonable
          method of valuation as it may adopt.

     C.   In the  discretion  of  the  Liquidator,  a pro  rata  portion  of the
          distributions  that would otherwise be made to the General Partner and
          Limited Partners pursuant to this Article 13 may be:

          (1)  distributed to a trust established for the benefit of the General
               Partner  and Limited  Partners  for the  purposes of  liquidating
               Partnership  assets,

                                     - 44 -

<PAGE>
               collecting  amounts  owed  to the  Partnership,  and  paying  any
               contingent  or  unforeseen  liabilities  or  obligations  of  the
               Partnership  or  the  General   Partner  arising  out  of  or  in
               connection  with the  Partnership.  The  assets of any such trust
               shall be distributed to the General Partner and Limited  Partners
               from  time  to  time,  in  the   reasonable   discretion  of  the
               Liquidator,  in the same proportions as the amount distributed to
               such  trust  by  the   Partnership   would  otherwise  have  been
               distributed to the General Partner and Limited Partners  pursuant
               to this Agreement; or

          (2)  withheld  or  escrowed  to  provide  a  reasonable   reserve  for
               Partnership  liabilities (contingent or otherwise) and to reflect
               the unrealized portion of any installment obligations owed to the
               Partnership,  provided  that such  withheld or  escrowed  amounts
               shall be distributed to the General Partner and Limited  Partners
               in the manner and order of priority set forth in Section 13.2A as
               soon as practicable.

     13.3  Obligation to Contribute  Deficit.  In the event the  Partnership  is
"liquidated" within the meaning Section 1.704-1(b)(2)(ii)(g) of the Regulations,
if any Partner's Adjusted  Contributions are less than zero (after giving effect
to all  contributions,  distributions,  and  allocations  for all Fiscal  Years,
including the Fiscal Year during which such  liquidation  occurs),  such Partner
shall  contribute  to the capital of the  Partnership  the amount  necessary  to
restore such Partner's  Capital Account to zero in compliance  with  Regulations
Section 1.704-1(b)(2(ii)(b)(3).

     13.4  Rights of Limited  Partners.  Except as  otherwise  provided  in this
Agreement,  each  Limited  Partner  shall  look  solely  to  the  assets  of the
Partnership for the return of its Adjusted Capital  Contributions and shall have
no right or power to  demand  or  receive  property  other  than  cash  from the
Partnership.  Except as otherwise provided in this Agreement, no Limited Partner
shall have  priority  over any other  Partner  as to the return of its  Adjusted
Capital Contributions, distributions, or allocations.

     13.5 Notice of Dissolution.  In the event a Liquidating  Event occurs or an
event occurs that would,  but for the  provisions of an election or objection by
one or more Partners  pursuant to Section 13.1,  result in a dissolution  of the
Partnership,  the General  Partner  shall,  within 30 days  thereafter,  provide
written notice thereof to each of the Partners.

     13.6  Termination of Partnership and Cancellation of Certificate of Limited
Partnership.  Upon the  completion  of the  liquidation  of the  Partnership'  s
assets, as provided in Section 13.2 hereof, the Partnership shall be terminated,
a certificate of  cancellation  shall be filed,  and all  qualifications  of the
Partnership as a foreign  limited  partnership in  jurisdictions  other than the
state of Delaware  shall be canceled and such other  actions as may be necessary
to terminate the Partnership shall be taken.

     13.7 Reasonable Time for Winding-Up. A reasonable time shall be allowed for
the orderly  winding-up of the business and affairs of the  Partnership  and the

                                     - 45 -


<PAGE>
liquidation  of its assets  pursuant to Section 13.2 hereof in order to minimize
any losses otherwise attendant upon such winding-up,  and the provisions of this
Agreement  shall  remain  in effect  among the  Partners  during  the  period of
liquidation.

     13.8 Waiver of Partition. Each Partner hereby waives any right to partition
of the Partnership property.

     13.9 Deemed  Distribution  and  Recontribution.  Notwithstanding  any other
provisions of this Article 13, in the event the Partnership is liquidated within
the meaning of Regulations Section 1.704-1(b)(2)(ii)(g) but no Liquidating Event
has  occurred,   the  Property  shall  not  be  liquidated,   the  Partnership's
liabilities shall not be paid or discharged, and the Partnership's affairs shall
not be wound up. Instead,  the Partnership  shall be deemed to have  distributed
the  Property in kind to the  Partners,  who shall be deemed to have assumed and
taken  subject to all  Partnership  liabilities,  all in  accordance  with their
respective Capital Accounts,  and if any Partner has an Adjusted Capital Account
Deficit  (after  giving  effect  to  all   contributions,   distributions,   and
allocations  for all Fiscal  Years,  including the Fiscal Year during which such
liquidation  occurs)  such  Partner  shall  contribute  to  the  capital  of the
Partnership  the amount  necessary to restore  such  deficit  balance to zero in
compliance  with   Regulations   Section   1.704-1(b)(2(ii)(b)(3).   Immediately
thereafter,  the Partners shall be deemed to have  recontributed the property in
kind to the Partnership, which shall be deemed to have assumed and taken subject
to all such liabilities.

ARTICLE 14.     Amendment of Partnership Agreement; Meetings.

     14.1 Amendments.

     A.   Amendments to this Agreement may be proposed by the General Partner or
          by any  Limited  Partners  (other  than the  Company)  holding  in the
          aggregate 25% or more of the  Partnership  Interests.  Following  such
          proposal,  the General Partner shall submit any proposed  amendment to
          the Limited Partners.  The General Partner shall seek the written vote
          of the Partners on the  proposed  amendment or shall call a meeting to
          vote  thereon  and to  transact  any other  business  that it may deem
          appropriate.  For  purposes of obtaining a written  vote,  the General
          Partner may require a response within a reasonable specified time, but
          not less than 15 days,  and  failure to  respond  in such time  period
          shall constitute a vote which is consistent with the General Partner's
          recommendation  with  respect to the  proposal.  Except as provided in
          Section 8.9, 13.1C,  14.1B, 14.1C or 14.1D, a proposed amendment shall
          be adopted and be effective  as an amendment  hereto if it is approved
          by the General Partner and it receives the Consent of Limited Partners
          holding  50%  or  more  of the  Percentage  Interests  of the  Limited
          Partners (including Limited Partner Interests held by the Company).

     B.   Notwithstanding  any  provisions  of  Sections  8.9 and  14.1A  to the
          contrary,  the  General  Partner  shall  have the power,  without  the
          consent of the Limited  Partners,

                                     - 46 -

<PAGE>
          to amend this Agreement  as may be required to facilitate or implement
          any of the following purposes:

          (1)  to add to the obligations of the General Partner or surrender any
               right or power granted to the General Partner or any Affiliate of
               the General Partner for the benefit of the Limited Partners;

          (2)  to  reflect  the   admission,   substitution,   termination,   or
               withdrawal of Partners in accordance with this Agreement;

          (3)  to set  forth  the  designations,  rights,  powers,  duties,  and
               preferences  of  the  holders  of  any   additional   Partnership
               Interests issued pursuant to Section 4.3 hereof;

          (4)  to reflect a change that is of an inconsequential nature and does
               not  adversely  affect  the  Limited  Partners  in  any  material
               respect,  or to cure any  ambiguity,  correct or  supplement  any
               provision in this  Agreement  not  inconsistent  with law or with
               other  provisions,  or make other changes with respect to matters
               arising under this Agreement that will not be  inconsistent  with
               law or with the provisions of this Agreement; and

          (5)  to satisfy any requirements,  conditions, or guidelines contained
               in any  order,  directive,  opinion,  ruling or  regulation  of a
               federal or state agency or contained in federal or state law.

The General Partner shall provide notice to the Limited Partners when any action
under this Section 14.1B is taken.

     C.   Notwithstanding  provision of Section 14.1A and 14.1B to the contrary,
          this  Agreement  shall not be  amended  without  the  Consent  of each
          Partner  adversely  affected  if such  amendment  would (i)  convert a
          Limited  Partner's  interest in the Partnership into a General Partner
          Interest;  (ii) modify the limited liability of a Limited Partner in a
          manner  adverse to such  Limited  Partner;  (iii) alter  rights of the
          Partner to receive distributions  pursuant to Article 5 or Article 13,
          or the  allocations  specified  in  Article  6  (except  as  permitted
          pursuant to Article IV and Section  14.1B(3)  hereof);  (iv) cause the
          termination of the Partnership  prior to the time set forth in Section
          2.5 or 13.1; or (v) amend this Section  14.1C.  Further,  no amendment
          may alter the  restrictions  on the General  Partner' s authority  set
          forth in Section 13.1C without the Consent specified in that section.

     14.2 Meetings of the Partners.

     A.   Meetings  of the  Partners  may be called by the  General  Partner and
          shall be called upon the  receipt by the General  Partner of a written
          request by Limited  Partners  (other than the Company)  holding 25% or
          more of the Partnership Interests.  The request shall state the nature
          of the business to be transacted.  Notice of any such meeting shall be
          given to all Partners not less than 7 days nor more than 30 days prior

                                     - 47 -


<PAGE>
          to the date of such  meeting.  Partners may vote in person or by proxy
          at such meeting.  Whenever the vote or Consent of the Limited Partners
          is permitted or required  under this  Agreement,  such vote or Consent
          may be  given  at a  meeting  of the  Partners  or  may  be  given  in
          accordance  with the  procedure  prescribed  in Section  14.1A hereof.
          Except as otherwise expressly provided in this Agreement,  the consent
          of holders of a majority of the Percentage  Interests held by Partners
          (including  Limited  Partnership  Interests held by the Company) shall
          control.

     B.   Any  action  required  or  permitted  to be taken at a meeting  of the
          Partners may be taken without a meeting if a written  consent  setting
          forth the  action so taken is signed by a majority  of the  Percentage
          Interests of the Partners  (or such other  percentage  as is expressly
          required by this Agreement).  Such consent may be in one instrument or
          in several instruments,  and shall have the same force and effect as a
          vote of a majority of the  Percentage  Interests  of the  Partners (or
          such other  percentage  as is expressly  required by this  Agreement).
          Such  consent  shall be filed with the General  Partner.  An action so
          taken  shall be  deemed to have  been  taken at a meeting  held on the
          effective date so certified.

     C.   Each Limited  Partner may  authorize  any Person or Persons to act for
          him by proxy on all matters in which a Limited  Partner is entitled to
          participate,  including  waiving  notice of any meeting,  or voting or
          participating at a meeting.  Every proxy must be signed by the Limited
          Partner or his  attorney-in-fact.  No proxy  shall be valid  after the
          expiration  of 11  months  from  the  date  thereof  unless  otherwise
          provided in the proxy.  Every proxy shall be revocable at the pleasure
          of the Limited  Partner  executing it, such revocation to be effective
          upon the  Partnership's  receipt of written notice of such  revocation
          from the Limited Partner executing such proxy.

     D.   Each meeting of the Partners shall be conducted by the General Partner
          or such other  Person as the General  Partner may appoint  pursuant to
          such rules for the conduct of the  meeting as the  General  Partner or
          such other  Person  deems  appropriate.  Meetings of  Partners  may be
          conducted  in the same manner as meetings of the  shareholders  of the
          Company and may be held at the same time, and as part of,  meetings of
          the shareholders of the Company.

ARTICLE 15.     General Provisions.

     15.1 Addresses and Notice. Any notice,  demand,  request or report required
or permitted to be given or made to a Partner or Assignee  under this  Agreement
shall be in writing and shall be deemed  given or made when  delivered in person
or when sent by first  class  United  States  mail or by other  means of written
communication  to  the  Partner  or  Assignee  (including  electronic  mail  and
electronic facsimile transmission if delivery in that manner has been confirmed)
at the  address  set forth in  Appendix  I or such  other  address  of which the
Partner shall notify the General Partner in writing.

     15.2 Titles and Captions. All article or section titles or captions in this
Agreement  are for  convenience  only.  They  shall not be  deemed  part of this
Agreement and in no way define, limit, extend or describe the scope or intent of
any provisions 

                                     - 48 -

<PAGE>
hereof. Except as specifically provided otherwise,  references to "Articles" and
"Sections" are to Articles and Sections of this Agreement.

     15.3  Pronouns and Plurals.  Whenever the context may require,  any pronoun
used in this Agreement shall include the  corresponding  masculine,  feminine or
neuter forms,  and the singular form of nouns,  pronouns and verbs shall include
the plural and vice versa.

     15.4 Further  Action.  The parties shall execute and deliver all documents,
provide  all  information  and take or  refrain  from  taking  action  as may be
necessary or appropriate to achieve the purposes of this Agreement.

     15.5 Binding Effect.  This Agreement shall be binding upon and inure to the
benefit  of the  parties  hereto  and their  heirs,  executors,  administrators,
successors, legal representatives and permitted assigns.

     15.6  Creditors.  Other than as expressly  set forth herein with respect to
the  Indemnitees,  none of the  provisions  of this  Agreement  shall be for the
benefit of, or shall be enforceable by, any creditor of the Partnership.

     15.7 Waiver. No failure by any party to insist upon the strict  performance
of any covenant,  duty,  agreement or condition of this Agreement or to exercise
any right or remedy  consequent upon a breach thereof shall constitute waiver of
any such breach or any other covenant, duty, agreement or condition.

     15.8 Counterparts.  This Agreement may be executed in counterparts,  all of
which  together  shall  constitute  one agreement  binding on all of the parties
hereto,  notwithstanding  that  all  such  parties  are not  signatories  to the
original  or the  same  counterpart.  Each  party  shall  become  bound  by this
Agreement immediately upon affixing its signature hereto.

     15.9  Applicable  Law.  This  Agreement  shall be construed and enforced in
accordance  with and  governed  by the laws of the  State of  Delaware,  without
regard to the principles of conflicts of laws thereof.

     15.10  Invalidity of  Provisions.  If any provision of this Agreement is or
becomes invalid, illegal or unenforceable in any respect, the validity, legality
and  enforceability  of the remaining  provisions  contained herein shall not be
affected thereby.

     15.11 Entire Agreement.  This Agreement  contains the entire  understanding
and agreement  among the Partners with respect to the subject  matter hereof and
supersedes any other prior written or oral  understandings  or agreements  among
them with respect thereto.

     15.12 Guaranty by the Company. The Company  unconditionally and irrevocably
guarantees to the Limited Partners the performance by the General Partner

                                     - 49 -

<PAGE>
of the General  Partner' s obligations  under this Agreement.  This guarantee is
exclusively for the benefit of the Limited  Partners and shall not extend to the
benefit any creditor of the Partnership.

                                     - 50 -

<PAGE>
     In Witness  Whereof,  the parties hereto have executed this Agreement as of
the date first written above.



General Partner:

Mission West Properties, a California corporation


By:/s/ Michael J. Anderson                                       
- ---------------------------------
   Michael J. Anderson
Its:  Vice President and Chief Operating Officer

Limited Partners:


Carl E. Berg, Trustee, Berg Living Trust UTA dated May 1, 1981

                                          
/s/ Carl E. Berg 
- ----------------------------------

Clyde J. Berg, Trustee, 1995 Clyde J. Berg
Revocable Trust, dated April 4, 1995

                                          
/s/ Clyde J. Berg
- ----------------------------------

Clyde J. Berg, Trustee, Carl Berg Child's Trust
UTA dated June 2, 1978


 /s/ Clyde J. Berg                                         
- ---------------------------------



                                     - 51 -

<PAGE>

                                   Appendix I

          Partners' [Adjusted] Contributions and Partnership Interests
<TABLE>
<CAPTION>

 Name and Address             Cash            Agreed          Total            L.P.     Percentage
    of Partner            Contributions*     Value of     Contribution**      Units      Interest
                                            Contributed
                                             Property**
- ------------------        --------------    -----------    --------------    -------    ----------         
<S>                                                                         <C>           <C>
General Partner

Mission West Properties                                                        ___        10.91%
10050 Bandley Drive
Cupertino, CA 95014

Limited Partners

Berg Living Trust UTA                                                       10,306,802    72.172%
dated May 1, 1981
10050 Bandley Drive
Cupertino, CA 95014

Clyde J. Berg, Trustee,                                                      1,505,116    10.539%
1995 Clyde J. Berg
Revocable Trust date 
April 4, 1995
10050 Bandley Drive
Cupertino, CA 95014

Clyde J. Berg, Trustee,                                                        910,958     6.379%
Carl Berg Child's
Trust UTA dated
June 2, 1978
10050 Bandley Drive
Cupertino, CA 95014

</TABLE>

* The Company's Cash  Contribution  shall be increased by all transaction  costs
paid  by the  Company  out of  the  Company  Cash  pursuant  to the  Acquisition
Agreement.

** To be  completed  upon  final  adjustment  of  accounts  at July 1,  1998 and
preparation of 1998 federal income tax return.

                                     - 52 -

<PAGE>

                                
                                   Appendix II



                      Allocations of Partnership Interests



1. Allocation of Net Income and Net Loss.

     (a) Net  Income.  Except as  otherwise  provided in this  Appendix  II, Net
Income (or items thereof) (other than Net Income,  or items thereof,  arising in
connection with a Terminating Capital  Transaction) for any fiscal year or other
applicable  period shall be allocated to the Partners in  accordance  with their
respective Percentage Interests.

     (b) Net Loss.  Except as otherwise  provided in this  Appendix II, Net Loss
(or items thereof) of the Partnership  for each fiscal year or other  applicable
period  shall be  allocated to the  Partners in  accordance  with the  Partners'
respective Percentage Interests.  Notwithstanding the preceding sentence, to the
extent  any Net Loss (or  items  thereof)  allocated  to a  Partner  under  this
subparagraph (b) would cause such Partner (hereinafter,  a "Restricted Partner")
to have an  Adjusted  Capital  Account  Deficit,  or  increase  the amount of an
existing  Adjusted Capital Account Deficit,  as of the end of the fiscal year or
other applicable period to which such Net Loss relates,  such Net Loss shall not
be allocated to such  Restricted  Partner and instead  shall be allocated to the
other Partner(s) (hereinafter,  the "Permitted Partners") pro rata in accordance
with each Permitted Partner's Percentage Interest.

     (c) Terminating Capital Transaction; Liquidation. Allocations of Net Income
or Net  Loss  (or  items  thereof)  in  connection  with a  Terminating  Capital
Transaction or Liquidation  of the  Partnership  shall first be made so that, to
the extent  possible,  each Partner's  Capital  Account balance is equal to such
Partner's  Adjusted  Contribution,  and the  remainder of such Net Income or Net
Loss (or items  thereof)  shall be allocated to the Partners in accordance  with
their  Percentage  Interests.  Notwithstanding  the preceding  sentence,  to the
extent  any Net Loss (or  items  thereof)  would be  allocated  to a  Restricted
Partner  under this  subparagraph  (c),  such Net Loss shall not be allocated to
such Restricted Partner and instead shall be allocated to the Permitted Partners
pro rata in accordance with each Permitted Partner's Percentage Interest.

     (d) Rules of Construction.

     (1)  Capital Account Increases. For purposes of making allocations pursuant
          to subparagraph  1(c) of this Appendix II, a Partner's Capital Account
          balance shall be deemed to be increased by such Partner's share of any
          Partnership  Minimum Gain and Partner  Minimum  Gain  remaining at the
          close of the fiscal  period in respect of which such  allocations  are
          being made.

                                     - 53 -

<PAGE>
     (2)  Change in Percentage Interests.  In the event any Partner's Percentage
          Interest  changes  during a  fiscal  year  for any  reason,  including
          without  limitation,  the Transfer of any interest in the Partnership,
          the tax allocations  contained in this Appendix II shall be applied as
          necessary to reflect the varying interests of the Partners during such
          year.

2. Special Allocations.

     Notwithstanding  any  provisions  of  paragraph 1 of this  Appendix II, the
following special allocations shall be made.

     (a) Minimum Gain Chargeback (Nonrecourse Liabilities).  Except as otherwise
provided in Section 1.704-2(f) of the Regulations, if there is a net decrease in
Partnership  Minimum Gain for any Partnership fiscal year, each Partner shall be
specially  allocated items of Partnership income and gain for such year (and, if
necessary,  subsequent  years) in an amount equal to such Partner's share of the
net decrease in Partnership  Minimum Gain to the extent  required by Regulations
Section  1.704-2(f).  The  items  to be so  allocated  shall  be  determined  in
accordance  with  Sections  1.704-2(f)  and  (j)(2)  of  the  Regulations.  This
subparagraph  2(a) is  intended  to  comply  with the  minimum  gain  chargeback
requirement  in  said  section  of the  Regulations  and  shall  be  interpreted
consistently therewith.  Allocations pursuant to this subparagraph 2(a) shall be
made in proportion to the  respective  amounts  required to be allocated to each
Partner pursuant hereto.

     (b)  Partner  Minimum  Gain  Chargeback.  Except as  otherwise  provided in
Section 1.704-2(i)(4) of the Regulations,  if there is a net decrease in Partner
Minimum Gain attributable to a Partner  Nonrecourse Debt during any fiscal year,
each Partner who has a share of the Partner  Minimum Gain  attributable  to such
Partner  Nonrecourse Debt,  determined in accordance with Section 1.704- 2(i)(5)
of the Regulations, shall be specially allocated items of Partnership income and
gain for such year (and, if necessary,  subsequent  years) in an amount equal to
that  Partner's   share  of  the  net  decrease  in  the  Partner  Minimum  Gain
attributable  to such Partner  Nonrecourse  Debt to the extent and in the manner
required by Section 1.704-2(i) of the Regulations.  The items to be so allocated
shall be determined in accordance with Sections  1.704-2(i)(4) and (j)(2) of the
Regulations.  This subparagraph 2(b) is intended to comply with the minimum gain
chargeback  requirement  with respect to Partner  Nonrecourse  Debt contained in
said  Section   1.704-2(i)(4)  of  the  Regulations  and  shall  be  interpreted
consistently therewith.  Allocations pursuant to this subparagraph 2(b) shall be
made in proportion to the  respective  amounts  required to be allocated to each
Partner pursuant hereto.

     (c) Qualified Income Offset. In the event a Partner  unexpectedly  receives
any   adjustments,   allocations   or   distributions   described   in  Sections
1.704-1(b)(2)(ii)(d)(4),  (5) or (6) of the Regulations, and such Partner has an
Adjusted Capital Account Deficit,  items of Partnership  income (including gross
income) and gain shall be  specially  allocated to such Partner in an amount and
manner  sufficient to eliminate the Adjusted  Capital Account Deficit as quickly
as possible as required by the

                                     - 54 -


<PAGE>
Regulations.  This  subparagraph  2(c) is intended to  constitute  a  "qualified
income offset" under Section  1.704-1(b)(2)(ii)(d)  of the Regulations and shall
be interpreted consistently therewith.

     (d) Other  Chargeback of Impermissible  Negative  Capital  Account.  To the
extent any  Partner has an Adjusted  Capital  Account  Deficit at the end of any
Partnership  Year,  each such  Partner  shall be  specially  allocated  items of
Partnership  income  (including  gross  income)  and gain in the  amount of such
excess as quickly as  possible,  provided  that an  allocation  pursuant to this
paragraph  2(d) shall be made if and only to the extent that such Partner  would
have an Adjusted  Capital Account Deficit after all other  allocations  provided
for in this Appendix II have been  tentatively  made as if this  paragraph  2(d)
were not in the Agreement.

     (e) Nonrecourse  Deductions.  Nonrecourse Deductions for any fiscal year or
other  applicable  period shall be allocated to the Partners in accordance  with
their respective Percentage Interests.

     (f) Partner Nonrecourse Deductions.  Partner Nonrecourse Deductions for any
fiscal year or other  applicable  period with  respect to a Partner  Nonrecourse
Debt shall be specially allocated to the Partner that bears the economic risk of
loss  for  such  Partner   Nonrecourse   Debt  (as  determined   under  Sections
1.704-2(b)(4) and 1.704-2(i)(1) of the Regulations).

     (g)  Intent  of  Allocations.   The  parties  intend  that  the  allocation
provisions of this Appendix II shall result in final Capital Account balances of
the Partners that  initially are equal to each Partner's  Adjusted  Contribution
and are then in proportion to the Partners' respective Percentage Interests,  so
that when  liquidating  distributions  are made in  accordance  with such  final
Capital Account balances under Section 13.2A(4) hereof,  such distributions will
be able to return to each  Partner its  Adjusted  Contribution  and then will be
made in proportion  to the Partners'  respective  Percentage  Interests.  To the
extent that such final Capital Account balances do not so reflect the provisions
of this Appendix II, income and loss of the Partnership for the current year and
future  years,  as computed  for book  purposes,  shall be  allocated  among the
Partners  so as to result  in final  Capital  Account  balances  reflecting  the
provisions of this Appendix II, and to the extent such  allocations  of items of
income  (including  gross  income)  and  deduction  do not  result in such final
Capital  Account  balances,  then,  income and loss of the Partnership for prior
open  years,  as  computed  for book  purposes  (or  items of gross  income  and
deduction of the  Partnership  for such years,  as computed  for book  purposes)
shall be reallocated  among the Partners  consistent  with the  foregoing.  This
subparagraph shall control  notwithstanding any reallocation of income, loss, or
items thereof, as computed for book purposes, by the Internal Revenue Service or
any other taxing authority.

     (h) Section 754 Adjustment. To the extent an adjustment to the adjusted tax
basis of any asset of the Partnership  pursuant to Section 734(b) of the Code or
Section  743(b)  of  the  Code  is  required  pursuant  to  Regulations  Section
1.704-1(b)(2)(iv)(m)  to be taken into account in determining  Capital Accounts,
the amount of such  adjustment

                                     - 55 -


to the Capital  Accounts  shall be treated as an item of gain (if the adjustment
increases  the basis of the  asset) or loss (if the  adjustment  decreases  such
basis) and such gain or loss shall be specially  allocated among the Partners in
a manner  consistent with the manner in which each of their  respective  Capital
Accounts  are  required  to  be  adjusted   pursuant  to  such  section  of  the
Regulations.

     (i) Gross  Income  Allocation.  There shall be  specially  allocated to the
General Partner an amount of Partnership income and gain during each Partnership
Year or portion thereof, before any other allocations are made hereunder,  which
is equal to the excess, if any, of the cumulative  distributions of cash made to
the General Partner under Section 7.3B hereof over the cumulative allocations of
Partnership  income and gain to the General Partner pursuant to this Section (i)
of this Appendix II.

3. Tax Allocations.

     (a) Items of  Income  or Loss.  Except  as is  otherwise  provided  in this
Appendix II, an  allocation of  Partnership  Net Income or Net Loss to a Partner
shall be treated as an allocation to such Partner of the same share of each item
of  income,  gain,  loss,  deduction  and item of  tax-exempt  income or Section
705(a)(2)(B)  expenditure  (or item  treated  as such  expenditure  pursuant  to
Regulations  Section  1.704-1(b)(2)(iv)(i))  ("Tax  Items")  that is taken  into
account in computing Net Income or Net Loss.

     (b) Section  1245/1250  Recapture.  If any portion of gain from the sale of
Partnership  assets is treated as gain which is ordinary income by virtue of the
application of Code Sections 1245 or 1250 ("Affected Gain"),  then such Affected
Gain shall be  allocated  among the  Partners  in the same  proportion  that the
depreciation and amortization  deductions  giving rise to the Affected Gain were
allocated.  This  subparagraph 3(b) shall not alter the amount of Net Income (or
items thereof)  allocated  among the Partners,  but merely the character of such
Net Income (or items thereof).  For purposes  hereof,  in order to determine the
proportionate  allocations of depreciation and amortization  deductions for each
fiscal  year or  other  applicable  period,  such  deductions  shall  be  deemed
allocated  on the same  basis  as Net  Income  and Net Loss for such  respective
period.

     (c) Precontribution  Gain. The Partnership may elect the traditional method
of allocation  contained in Section 1.704- 3(b) of the  Regulations to take into
account any  variation  between the adjusted  basis and the fair market value of
the   Initial   Contributed   Property   at  the   time   of  the   contribution
("Precontribution  Gain") on a  Property-by-Property  basis.  By executing  this
Agreement, each Partner hereby agrees to report income, gain, loss and deduction
on such Partner's  federal income tax return in a manner that is consistent with
the use of the  traditional  method of  allocation  with  respect to the Initial
Contributed Property.  With respect to any Contributed Property, the Partnership
shall use any permissible method contained in the Regulations  promulgated under
Section  704(c)  of the  Code  selected  by the  General  Partner,  in its  sole
discretion,  to take into account any  variation  between the adjusted  basis of
such  asset  and the  fair  market  value  of such  asset  as of the time of the
contribution.  Each  Partner  hereby  agrees to report  income,  gain,  loss and
deduction on such  Partner's

                                     - 56 -

<PAGE>
federal  income tax return in a manner  consistent  with the method  used by the
Partnership.

     (d) Allocations  Respecting  Section 704(c) and Revaluations.  If any asset
has a Gross Asset Value which is different from the Partnership's adjusted basis
for such asset for  federal  income tax  purposes  because the  Partnership  has
revalued such asset pursuant to Regulations  Section  1.704-1(b)(2)(iv)(f),  the
allocations  of Tax Items shall be made in  accordance  with the  principles  of
Section  704(c) of the Code and the  Regulations  and the methods of  allocation
promulgated thereunder,  provided, however, that the General Partner shall elect
with respect to each Initial Contributed Property, to allocate the income, gain,
loss and deduction with respect to such Property using the "traditional  method"
described in Regulations  Section  1.704-3(b) unless the majority of the Limited
Partners affected thereby otherwise instruct the General Partner.  The intent of
this Section 3(d) and Section 3(c) above is that each Partner who contributed to
the capital of the Partnership a Contributed Property will bear, through reduced
allocations of depreciation,  increased  allocations of gain or other items, the
tax detriments  associated with any Precontribution  Gain. This Section 3(d) and
Section 3(c) are to be interpreted consistently with such intent.

     (e) Excess  Nonrecourse  Liability  Safe  Harbor.  Pursuant to  Regulations
Section  1.752-3(a)(3),  solely  for  purposes  of  determining  each  Partner's
proportionate share of the "excess  nonrecourse  liabilities" of the Partnership
(as defined in  Regulations  Section  1.752-3(a)(3)),  the Partners'  respective
interests in  Partnership  profits shall be  determined in accordance  with each
Partner's  Percentage  Interest;  provided,  however,  that each Partner who has
contributed  an  asset to the  Partnership  shall be  allocated,  to the  extent
possible,  a share of "excess nonrecourse  liabilities" of the Partnership which
results in such Partner being  allocated  nonrecourse  liabilities  in an amount
which is at least equal to the amount of income  pursuant  to Section  704(c) of
the Code and the Regulations promulgated thereunder (the "Liability Shortfall").
In the event  there is an  insufficient  amount of  nonrecourse  liabilities  to
allocate  to each  Partner  an amount of  nonrecourse  liabilities  equal to the
Liability Shortfall, then an amount of nonrecourse liabilities in proportion to,
and to the  extent  of,  the  Liability  Shortfall  shall be  allocated  to each
Partner.

     (f)  References  to  Regulations.  Any reference in this Appendix II or the
Agreement to a provision of proposed and/or temporary  Regulations shall, in the
event  such  provision  is  modified  or  renumbered,  be deemed to refer to the
successor  provision as so modified or  renumbered,  but only to the extent such
successor  provision  applies to the Partnership  under the effective date rules
applicable to such successor provision.

     (g) Successor Partners. For purposes of this Appendix II, a transferee of a
Partnership  Interest shall be deemed to have been allocated the Net Income, Net
Loss and other items of Partnership  income,  gain,  loss,  deduction and credit
allocable to the  transferred  Partnership  Interest that  previously  have been
allocated to the transferor Partner pursuant to this Agreement.

                                     - 57 -



<PAGE>
     (h)  Limitation to Preserve REIT Status.  Notwithstanding  anything else in
this  Agreement,  to the extent that the amount paid,  credited,  distributed or
reimbursed  by the  Partnership  or any  Partners  to, for or with  respect  any
Partner that is a REIT ("REIT Partner") or its officers, directors, employees or
agents,  whether  as  a  reimbursement,  fee,  expense  or  indemnity  (a  "REIT
Payment"),  would  constitute  gross  income to the REIT Partner for purposes of
Section 856 (c)(2) or Section 856(c)(3) of the Code, then,  notwithstanding  any
other provision of this Agreement, the amount of such REIT Payments, as selected
by  the  General  Partner  in its  discretion  from  among  items  of  potential
distribution,  reimbursement,  fees, expenses and indemnities,  shall be reduced
for any Fiscal Year so that the REIT  Payments,  as so reduced,  to, for or with
respect to such REIT Partner shall not exceed the lesser of:

     (i)  an amount  equal to the excess,  if any,  of (x) four and  nine-tenths
          percent  (4.9%) of the REIT Partner total gross income (but  excluding
          the amount of any REIT Payments) for the Fiscal Year that is described
          in  subsections  (A)  through  (H) of Section  856(c)(2)  over (y) the
          amount of gross  income  (within  the  meaning of  Section  856(c)(2))
          derived by the REIT Partner from sources other than those described in
          subsections  (A) through (H) of Section  856(c)(2)  (but not including
          the amount of any REIT Payments); or

     (ii) an  amount  equal  to the  excess,  if  any,  of (x)  24% of the  REIT
          Partner's  total gross  income (but  excluding  the amount of any REIT
          Payments)  for the Fiscal Year that is  described in  subsections  (A)
          through (I) of Section  856(c)(3)  over (y) the amount of gross income
          (within the meaning of Section  856(c)(3)) derived by the REIT Partner
          from sources other than those described in subsections (A) through (I)
          of  Section  856(c)(3)  (but  not  including  the  amount  of any REIT
          Payments);

          provided,  however, that  REIT payments in  excess of the  amounts set
          forth  in  clauses  (i)  and  (ii)  above may  be made if the  General
          Partner, as a condition precedent,  obtains an opinion of  tax counsel
          that the receipt of such excess amounts shall not adversely affect the
          REIT Partner's ability to  qualify as a REIT.  To the extent that REIT
          Payments  may not be  made in a  Fiscal Year  as a  consequence of the
          limitations set forth in this  Section 3(h), such  REIT Payments shall
          carry over and  shall be  treated as  arising in the following  Fiscal
          Year.  Nothing in this  Section 3(h) shall permit the  General Partner
          to allocate income of the Partnership to any  Partner in excess of the
          income that would otherwise be allocated to it under Article 6 without
          regard to this Section 3(h).  The purpose of the limitations contained
          in this  Section 3(h) is to prevent any REIT  Partner from  failing to
          qualify  as a  REIT under the  Code by reason of such  REIT  Partner's
          share  of  items, including   distributions,   reimbursements,   fees,
          expenses or indemnities,  receivable  directly or indirectly  from the
          Partnership or the Partners, and this Section 3(h)shall be interpreted
          and applied to effectuate such purpose.
                      
                                     - 58 -




     ---------------------------------------------------------------------













                              AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                        MISSION WEST PROPERTIES, L.P. II









                                  JULY 1, 1998

     ---------------------------------------------------------------------

<PAGE>

         


                                TABLE OF CONTENTS

                                                                PAGE
                                        
<TABLE>
<CAPTION>
<S>                                                              <C>
ARTICLE 1. Defined Terms..........................................2

  1.1 "Act".......................................................2
  1.2 "Acquisition Agreement".....................................2
  1.3 "Additional Limited Partner"................................2
  1.4 "Adjusted Capital Account Deficit"..........................2
  1.5 "Adjusted Contribution".....................................2
  1.6 "Affiliate".................................................3
  1.7 "Agreement".................................................3
  1.8 "Articles of Incorporation".................................3
  1.9 "Assignee"..................................................3
  1.10 "Available Cash"...........................................3
  1.11 "Berg Acquisition".........................................3
  1.12 "Berg Group"...............................................3
  1.13 "Berg Land Holdings".......................................4
  1.14 "Capital Account"..........................................4
  1.15 "Capital Contribution".....................................5
  1.16 "Capital Event"............................................5
  1.17 "Certificate"..............................................5
  1.18 "Change of Control Transaction"............................5
  1.19 "Charter"..................................................5
  1.20 "Code".....................................................5
  1.21 "Common Stock".............................................5
  1.22 "Common Stock Price".......................................6
  1.23 "Company"..................................................6
  1.24 "Consent"..................................................6
  1.25 "Depreciation".............................................6
  1.26 "Dividend Reinvestment Plan"...............................6
  1.27 "Effective Date"...........................................6
  1.28 "Employee Benefit Plan"....................................6
  1.29 "Entity"...................................................7
  1.30 "Equity Security"..........................................7
  1.31 "ERISA"....................................................7
  1.32 "Exchange Act".............................................7
  1.33 "Exchange Factor"..........................................7
  1.34 "Exchange Right"...........................................7
  1.35 "Exchange Rights Agreement"................................7
  1.36 "GAAP".....................................................7
  1.37 "General Partner"..........................................7
  1.38 "General Partner Interest".................................7
  1.39 "Gross Asset Value"........................................7
  1.40 "Immediate Family".........................................8
  1.41 "Incapacity" or "Incapacitated"............................8
  1.42 "Indemnitee"...............................................9
  1.43 "Initial Contributed Property".............................9
<PAGE>

  1.44 "Lien".....................................................9
  1.45 "Limited Partner".........................................10
  1.46 "Limited Partner Interest"................................10
  1.47 "Liquidating Event".......................................10
  1.48 "Liquidator"..............................................10
  1.49 "L.P. Unit"...............................................10
  1.50 "L.P. Unit Majority"......................................10
  1.51 "Net Income" or "Net Loss"................................10
  1.52 "New Equity Financing Right"..............................11
  1.53 "Nonrecourse Deductions"..................................11
  1.54 "Nonrecourse Liabilities".................................11
  1.55 "Operating Partnership"...................................11
  1.56 "Partner".................................................11
  1.57 "Partner Minimum Gain"....................................11
  1.58 "Partner Nonrecourse Debt"................................11
  1.59 "Partner Nonrecourse Deductions"..........................11
  1.60 "Partnership".............................................12
  1.61 "Partnership Interest"....................................12
  1.62 "Partnership Minimum Gain"................................12
  1.63 "Partnership Record Date".................................12
  1.64 "Partnership Year"........................................12
  1.65 "Pending Development Projects"............................12
  1.66 "Partnership Interest"....................................12
  1.67 "Permitted Partners"......................................12
  1.68 "Permitted Transferee"....................................12
  1.69 "Person"..................................................12
  1.70 "Precontribution Gain"....................................12
  1.71 "Put Rights"..............................................12
  1.72 "Protective Provisions Expiration Date"...................13
  1.73 "Quarter".................................................13
  1.74 "Regulations".............................................13
  1.75 "REIT"....................................................13
  1.76 "REIT Requirements".......................................13
  1.77 "Restricted Partner"......................................13
  1.78 "SEC".....................................................13
  1.79 "Securities Act"..........................................13
  1.80 "Stock Option Plan".......................................13
  1.81 "Subsidiary"..............................................13
  1.82 "Substituted Limited Partner".............................13
  1.83 "Tax Items"...............................................13
  1.84 "Terminating Capital Transaction".........................14
  1.85 "Total Market Capitalization".............................14
  1.86 "Transfer"................................................14
  1.87 "Unit"....................................................14
<PAGE>

  1.88 "United States Person"....................................14
  1.89 "Voting Securities".......................................14

ARTICLE 2. Organizational Matters................................14

  2.1 Continuation...............................................14
  2.2 Name.......................................................14
  2.3 Registered Office and Agent; Principal Office..............15
  2.4 Power of Attorney..........................................15
  2.5 Term.......................................................16

ARTICLE 3. Purpose...............................................16

  3.1 Purpose and Business.......................................16
  3.2 Powers.....................................................17

ARTICLE 4. Capital Contributions.................................17

  4.1 Capital Contributions of the Partners......................17
  4.2 Additional Funds; Restrictions on Company..................17
  4.3 Issuance of Additional Partnership Interests; Admission 
      of Additional Limited Partners.............................19
  4.4 Repurchase of Company Equity Securities....................19
  4.5 No Third Party Beneficiary.................................20
  4.6 No Interest; No Return.....................................20

ARTICLE 5. Distributions.........................................20

  5.1 Regular Distributions......................................20
  5.2 Qualification as a REIT....................................20
  5.3 Withholding................................................21
  5.4 Additional Partnership Interests...........................21
  5.5 Distributions Upon Liquidation.............................21

ARTICLE 6. Allocations...........................................21

ARTICLE 7. Management and Operation of Business..................21

  7.1 Management.................................................21
  7.2 Certificate of Limited Partnership.........................22
  7.3 Reimbursement of the General Partner and the Company.......23
  7.4 Outside Activities of the General Partner..................23
  7.5 Contracts with Affiliates..................................23
  7.6 Indemnification............................................24
<PAGE>

  7.7 Liability of the General Partner...........................26
  7.8 Limited Partners' Right to Bring Derivative Lawsuits.......27
  7.9 Other Matters Concerning the General Partner...............27
  7.10 Title to Partnership Assets...............................27
  7.11 Reliance by Third Parties.................................28

ARTICLE 8. Rights and Obligations of Limited Partners............28

  8.1 Limitation of Liability....................................28
  8.2 Management of Business.....................................28
  8.3 Outside Activities of Limited Partners.....................29
  8.4 Return of Capital..........................................29
  8.5 Rights of Limited Partners Relating to the Partnership.....29
  8.6 Exchange Rights............................................30
  8.7 Put Rights.................................................30
  8.8 New Equity Financing Rights................................32
  8.9 Matters Requiring L.P. Unit Majority Approval..............32
  8.10 Approval of Certain Taxable Sales.........................33

ARTICLE 9. Books, Records, Accounting and Reports................33

  9.1 Records and Accounting.....................................33
  9.2 Fiscal Year................................................34

ARTICLE 10. Tax Matters..........................................34

  10.1 Preparation of Tax Returns................................34
  10.2 Tax Elections.............................................34
  10.3 Tax Matters Partner.......................................34
  10.4 Organizational Expenses...................................36
  10.5 Withholding...............................................36

ARTICLE 11. Transfers and Withdrawals............................37

  11.1 Transfer..................................................37
  11.2 Transfer of the Company's Partnership Interests...........37
  11.3 Limited Partners' Rights to Transfer......................37
  11.4 Substituted Limited Partners..............................40
  11.5 Assignees.................................................40
  11.6 Effect of Prohibited Transfer.............................41
  11.7 General Provisions........................................41

ARTICLE 12. Admission of Partners................................41
<PAGE>


  12.1 Admission of Successor General Partner....................41
  12.2 Admission of Additional and Substituted Limited Partners..42
  12.3 Amendment of Agreement and Certificate of Limited 
       Partnership...............................................43

ARTICLE 13. Dissolution, Liquidation and Termination.............43

  13.1 Dissolution...............................................43
  13.2 Winding Up................................................44
  13.3 Obligation to Contribute Deficit..........................45
  13.4 Rights of Limited Partners................................46
  13.5 Notice of Dissolution.....................................46
  13.6 Termination of Partnership and Cancellation of 
       Certificate of Limited Partnership........................46
  13.7 Reasonable Time for Winding-Up............................46
  13.8 Waiver of Partition.......................................46
  13.9 Deemed Distribution and Recontribution....................46

ARTICLE 14. Amendment of Partnership Agreement; Meetings.........47

  14.1 Amendments................................................47
  14.2 Meetings of the Partners..................................48

ARTICLE 15. General Provisions...................................49

  15.1 Addresses and Notice......................................49
  15.2 Titles and Captions.......................................49
  15.3 Pronouns and Plurals......................................49
  15.4 Further Action............................................49
  15.5 Binding Effect............................................50
  15.6 Creditors.................................................50
  15.7 Waiver....................................................50
  15.8 Counterparts..............................................50
  15.9 Applicable Law............................................50
  15.10 Invalidity of Provisions.................................50
  15.11 Entire Agreement.........................................50
  15.12 Guaranty by the Company..................................50
</TABLE>



<PAGE>

                              AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                        MISSION WEST PROPERTIES, L.P. II



      This AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP OF MISSION WEST
PROPERTIES,  L.P. II (this  "Agreement"),  dated as of July 1, 1998,  is entered
into by and  among  Mission  West  Properties,  a  California  corporation  (the
"Company" or the "General Partner") and the parties whose names are set forth on
Appendix I attached hereto (as it may be amended from time to time).

      WHEREAS,  the Partnership  converted from a California general partnership
and  became a  limited  partnership  pursuant  to the  Revised  Uniform  Limited
Partnership  Act of the State of  Delaware  by filing a  certificate  of limited
partnership with the Secretary of State of the State of Delaware on December 22,
1997;

      WHEREAS,  since its  organization as a Delaware limited  partnership,  the
Partnership has been operated and managed by Berg & Berg Developers LLC, as sole
general partner,  pursuant to the terms of the Agreement of Limited  Partnership
of Berg & Berg Developers, L.P. (the "Prior Agreement");

      WHEREAS,   on  July  1,  1998,  the  Partnership  filed  an  amendment  of
certificate of limited  partnership  with the Secretary of State of the State of
Delaware changing the Partnership's name to Mission West Properties, L.P.
II;

      WHEREAS,  pursuant to the terms of a Acquisition Agreement dated as of May
14,  1998,  as amended  as of July 1, 1998 (the  "Acquisition  Agreement"),  the
Company  has  agreed  to  acquire  a  10.91%  general  partner  interest  in the
Partnership and to become the sole general  partner in the Partnership  upon the
satisfaction of certain conditions set forth in the Acquisition Agreement, which
now have been satisfied or waived by the parties thereto;

      WHEREAS, Berg & Berg Developers LLC and all of the limited partners in the
Partnership  wish to admit  the  Company  as a  general  partner,  to amend  the
certificate of limited  partnership of the  Partnership to reflect the Company's
admission as a general partner,  and to amend and restate the Prior Agreement as
provided herein; and

      WHEREAS,   upon  the  filing  of  the  certificate  of  amendment  of  the
certificate  of limited  partnership  of the  Partnership  with the Secretary of
State of the State of


<PAGE>
 
Delaware,  Berg & Berg Developers LLC intends to resign as
a general partner and become a limited  partner in the  Partnership  pursuant to
the terms of this Agreement.

      NOW THEREFORE,  in consideration of the mutual covenants herein contained,
and other valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties do hereby agree as follows:

ARTICLE 1. DEFINED TERMS.

      The  following  definitions  shall be for all purposes,  unless  otherwise
clearly  indicated to the contrary,  applied to the following terms used in this
Agreement.

      1.1 "ACT" the Delaware Revised Uniform Limited  Partnership Act, as it may
be amended from time to time, and any successor to such statute.

      1.2 "ACQUISITION  AGREEMENT" means the agreement dated as of May 14, 1998,
as amended as of July 1, 1998,  among the  Partnership,  the other  partnerships
comprising  the  Operating  Partnership,  all of the partners  therein,  and the
Company  concerning  the  acquisition  of  the  Berg  Properties,  the  Acquired
Properties and the Pending  Development  Projects by the Operating  Partnership,
the Company's  investment in and admission to the Operating  Partnership as sole
general  partner,  and the rights and  options of the  limited  partners  in the
Operating  Partnership  to tender L.P.  Units or acquire  shares of Common Stock
under certain circumstances.

      1.3  "ADDITIONAL   LIMITED   PARTNER"  means  a  Person  admitted  to  the
Partnership as a Limited Partner pursuant to Section 4.3 hereof and who is shown
as such on the books and records of the Partnership.

      1.4 "ADJUSTED  CAPITAL ACCOUNT DEFICIT" means with respect to any Partner,
the negative balance, if any, in such Partner's Capital Account as of the end of
any  relevant  fiscal year,  determined  after  giving  effect to the  following
adjustments:

     (a)  credit to such Capital  Account any portion of such  negative  balance
          which  such  Partner  (i) is treated  as  obligated  to restore to the
          Partnership pursuant to the provisions of Section 1.704-1(b)(2)(ii)(c)
          of the  Regulations,  or (ii) is deemed to be  obligated to restore to
          the  Partnership  pursuant to the  penultimate  sentences  of Sections
          1.704-2(g)(1) and 1.704-2(i)(5) of the Regulations; and

     (b)  debit  to  such  Capital  Account  the  items  described  in  Sections
          1.704-1(b)(2)(ii)(d)(4), (5) and (6) of the Regulations.

1.5  "ADJUSTED  CONTRIBUTION"  means the  Capital  Contributions  of any Partner
reduced by the total distributions to such Partner from Capital Events occurring
subsequent to the Closing Date under the Acquisition Agreement.  For purposes of
this Agreement,  the initial Capital  Contribution of the Company shall be equal
to [$35,200,000]  and the initial Adjusted  Contribution of each Limited Partner
shall be

                                      -2-
<PAGE>

equal  to  the  value  of  the  Limited  Partner's  interest  in  the  Operating
Partnership as set forth in Appendix I of the Acquisition Agreement.

      1.6  "AFFILIATE"  means,  (a) with respect to any individual  Person,  any
member of the  Immediate  Family of such Person or a trust  established  for the
benefit of such  member,  or (b) with respect to any Entity,  any Person  which,
directly  or  indirectly  through  one  or  more  intermediaries,  controls,  is
controlled by, or is under common control with, any such Entity.

      1.7  "AGREEMENT"  means this  Amended and  Restated  Agreement  of Limited
Partnership,  as originally executed and as amended,  modified,  supplemented or
restated from time to time, as the context requires.

      1.8 "ARTICLES OF INCORPORATION" means the Articles of Incorporation of the
Company,  as  amended  and  restated  from  time to  time,  or the  articles  of
incorporation,  certificate  of  incorporation,  operating  agreement  of  other
Charter  instrument of any  corporation  or other entity which is a successor to
the Company by merger or consolidation.

      1.9  "ASSIGNEE"  means a Person to whom one or more L.P.  Units  have been
transferred in a manner permitted under this Agreement, but who has not become a
Substituted Limited Partner, and who has the rights set forth in Section 11.5.

      1.10  "AVAILABLE  CASH"  means the  Partnership's  share of the  Operating
Partnership's  Available  Cash (as defined in the  Acquisition  Agreement)  with
respect to the applicable  period of measurement  (i.e., any period beginning on
the first day of the fiscal year, quarter or other period commencing immediately
after the last day of the fiscal year,  quarter or other  applicable  period for
purposes of the prior calculation of Available Cash for or with respect to which
a  distribution  has been made,  and ending on the last day of the fiscal  year,
quarter  or  other  applicable  period  immediately  preceding  the  date of the
calculation).  Notwithstanding  the foregoing,  Available Cash shall not include
any cash  received or  reductions  in  reserves,  nor shall the  calculation  of
Available Cash take into account any disbursements made or reserves established,
after commencement of the dissolution and liquidation of the Partnership.

      1.11  "BERG  ACQUISITION"  has the  meaning  set forth in the  Acquisition
Agreement.

      1.12 "BERG GROUP" means Carl E. Berg,  Clyde J. Berg, the members of their
respective  Immediate  Families,  and any Entity which is an Affiliate of either
Carl E. Berg or Clyde J. Berg, excluding the Partnership and the Company.

     1.13 "BERG LAND  HOLDINGS"  means  certain land held by members of the Berg
Group which the Operating  Partnership  may acquire under certain  circumstances
pursuant to the terms of the  Acquisition  Agreement  and the related  Berg Land
Holdings

                                      -3-
<PAGE>


Option  Agreement  to be entered into by the parties  thereto  upon  approval of
certain transactions by the Company's shareholders.

      1.14  "CAPITAL  ACCOUNT"  means with respect to any  Partner,  the Capital
Account maintained for such Partner in accordance with the following provisions:

     (a)  to each  Partner's  Capital  Account  there shall be credited (i) such
          Partner's  Initial  Adjusted  Contribution as of the effective date of
          this Agreement (ii) such Partner's Capital Contributions subsequent to
          the  Effective   Date  of  this   Agreement,   (iii)  such   Partner's
          distributive share of Net Income and any items in the nature of income
          or gain which are  specially  allocated  to such  Partner  pursuant to
          Sections 1 and 2 of Appendix II and (iv) the amount of any Partnership
          liabilities  assumed by such Partner or which are secured by any asset
          distributed to such Partner;

     (b)  to each  Partner's  Capital  Account  there  shall be debited  (i) the
          amount of cash and the Gross Asset Value of any  Property  distributed
          to such Partner pursuant to any provision of this Agreement, (ii) such
          Partner's distributive share of Net Losses and any items in the nature
          of expenses or losses  which are  specially  allocated to such Partner
          pursuant to  Sections 1 and 2 of Appendix  II, and (iii) the amount of
          any  liabilities of such Partner  assumed by the  Partnership or which
          are  secured  by  any  asset   contributed  by  such  Partner  to  the
          Partnership to the extent not assumed by the Partner; and

     (c)  in the event all or a portion of a Partnership Interest is transferred
          in accordance with the terms of this Agreement,  the transferee  shall
          succeed  to the  Capital  Account of the  transferor  to the extent it
          relates to the transferred Partnership Interest.

The foregoing  provisions and the other provisions of this Agreement relating to
the  maintenance  of Capital  Accounts  are  intended  to comply  with  Sections
1.704-1(b) and 1.704-2 of the Regulations,  and shall be interpreted and applied
in a manner consistent with such  Regulations.  In the event the General Partner
shall reasonably  determine that it is prudent to modify the manner in which the
Capital  Accounts,  or  any  debits  or  credits  thereto  (including,   without
limitation,  debits or credits  relating  to  liabilities  which are  secured by
contributed or distributed  assets or which are assumed by the Partnership,  the
General  Partner or any Limited  Partner)  are  computed in order to comply with
such Regulations, the General Partner may make such modification;  provided that
it does not have an adverse effect on the amounts  distributable  to any Partner
pursuant to Article 13 hereof upon the dissolution of the Partnership.

      1.15 "CAPITAL  CONTRIBUTION" means, with respect to any Partner, any cash,
cash  equivalents  or the Gross  Asset  Value of  property  which  such  Partner
contributes or is deemed to contribute to the Partnership  pursuant to Article 4
hereof.

     1.16 "CAPITAL EVENT" means any Partnership  transaction not in the ordinary
course of its  business,  including,  without  limitation,  distribution  to the
Partners in excess

                                      -4-
<PAGE>


of distributive shares of income,  principal payments,  prepayments,  prepayment
penalties,  sales,  exchanges,  foreclosures  or other  dispositions of Property
owned by the Partnership, recoveries of damage awards and insurance proceeds not
used to rebuild (other than the receipt of  contributions  to the capital of the
Partnership and business or rental  interruption  insurance proceeds not used to
rebuild).

      1.17 "CERTIFICATE" means the Certificate of Limited  Partnership  relating
to the Partnership to be filed in the office of the Delaware Secretary of State,
as amended from time to time in accordance with the terms hereof and the Act.

      1.18 "CHANGE OF CONTROL  TRANSACTION"  shall mean (A) any  transaction  or
series of transactions  occurring after the Effective Date, in which all Limited
Partners in the Operating  Partnership  are legally  entitled to participate and
pursuant to which L.P. Units representing more than 50% of the total outstanding
L.P. Units of the Operating Partnership are purchased by a Person not controlled
by, in control of or under common control with the Company, any Affiliate of the
Company or any Affiliate of a Limited  Partner,  (B) the merger or consolidation
of the Partnership  with another entity (other than a merger or consolidation in
which the holders of L.P. Units of the Partnership immediately before the merger
or  consolidation  own  immediately  after the merger or  consolidation,  Voting
Securities  of the  surviving  or  acquiring  Entity  or a parent  party of such
surviving or acquiring  Entity,  possessing more than 50% of the voting power of
the surviving or acquiring  Entity or parent party) resulting in the exchange of
the  outstanding  L.P. Units of the  Partnership  for cash,  securities or other
property, or (C) any merger, sale, lease, license, exchange or other disposition
(whether in one  transaction or a series of related  transactions)  of more than
50% of the assets of the Partnership.

      1.19  "CHARTER"  has the  meaning  set forth in Rule 405 of  Regulation  C
promulgated by the SEC under the Securities Act ("Rule 405").

      1.20 "CODE"  means the Internal  Revenue  Code of 1986,  as amended and in
effect  from  time  to  time,  as  interpreted  by  the  applicable  regulations
thereunder.  Any reference  herein to a specific section or sections of the Code
shall be deemed to include a reference to any corresponding  provision of future
law.

      1.21  "COMMON  STOCK"  means a share of Common Stock of the Company or any
shares of Voting  Securities  into which the Common Stock may be reclassified or
converted  or  for  which  shares  of  Common  Stock  may  be  exchanged  in any
transaction  made  applicable  or  available to all holders of Common Stock as a
class.

      1.22 "COMMON  STOCK  PRICE"  means with respect to a particular  valuation
event identified under this Agreement, the last reported sales price regular way
on such date or, in case no such  reported  sale takes  place on such date,  the
average of the reported  closing bid and asked prices  regular way on such date,
in either case on the American Stock Exchange,  the New York Stock Exchange,  or
if the  Common  Stock is not then  listed or  admitted  to  trading  on any such
exchange,  the Nasdaq or any comparable system on which the Common Stock is then
listed or  admitted  to trading or, 

                                      -5-

<PAGE>

if not then listed or admitted to trading on any national  securities  exchange,
the Nasdaq or any  comparable  system for the  10-trading day period ending with
the last day preceding the date of the valuation event.

      1.23 "COMPANY" means Mission West  Properties,  a California  corporation,
and any successor to such corporation.

      1.24  "CONSENT"  means the consent or  approval of a proposed  action by a
Partner given in accordance with Section 14.2 hereof.

      1.25  "DEPRECIATION"  means,  with respect to any asset of the Partnership
for any fiscal year or other period, the depreciation,  depletion,  amortization
or other cost recovery  deduction,  as the case may be, allowed or allowable for
federal  income tax  purposes  in respect of such asset for such  fiscal year or
other period;  provided,  however,  that except as otherwise provided in Section
1.704-2 of the  Regulations,  if there is a  difference  between the Gross Asset
Value  (including the Gross Asset Value, as increased  pursuant to paragraph (d)
of the definition of Gross Asset Value) and the adjusted tax basis of such asset
at the  beginning  of such fiscal year or other  period,  Depreciation  for such
asset shall be an amount that bears the same ratio to the beginning  Gross Asset
Value  of  such  asset  as  the  federal  income  tax  depreciation,  depletion,
amortization  or other cost  recovery  deduction  for such  fiscal year or other
period  bears to the  beginning  adjusted  tax  basis of such  asset;  provided,
further, that if the federal income tax depreciation, depletion, amortization or
other  cost  recovery  deduction  for such asset for such  fiscal  year or other
period is zero, Depreciation of such asset shall be determined with reference to
the  beginning  Gross  Asset  Value of such asset  using any  reasonable  method
selected by the General Partner.

      1.26 "DIVIDEND REINVESTMENT PLAN" has the meaning set forth in Rule 405.

      1.27 "EFFECTIVE DATE" means the date of closing of the Berg Acquisition.

      1.28 "EMPLOYEE BENEFIT PLAN" has the meaning set forth in Rule 405.

      1.29  "ENTITY"  means  any  general   partnership,   limited  partnership,
corporation, joint venture, trust, business trust, real estate investment trust,
limited liability company, cooperative or association.

      1.30 "EQUITY SECURITY" has the meaning set forth in Rule 405.

      1.31 "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time (or any corresponding provisions of succeeding laws).

      1.32 "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.

                                      -6-
<PAGE>


      1.33  "EXCHANGE  FACTOR" has the meaning set forth in the Exchange  Rights
Agreement,  and is equal to the number of L.P. Units  exchangeable for one share
of Common Stock, from time to time, under the Exchange Rights Agreement.

      1.34  "EXCHANGE  RIGHT" has the meaning set forth in the  Exchange  Rights
Agreement.

      1.35 "EXCHANGE RIGHTS AGREEMENT" means Exchange Rights Agreement among the
Company,  and each of the limited  partners of the  partnerships  comprising the
Operating Partnership.

      1.36 "GAAP" means United States generally accepted accounting  principles,
as in effect from time to time.

      1.37 "GENERAL  PARTNER" means the general partner of the  Partnership,  if
there is more than one general partner, all such general partners.

      1.38 "GENERAL PARTNER  INTEREST" means a Partnership  Interest held by the
General Partner,  in its capacity as general partner. A General Partner Interest
may be expressed as a number of Units,  each of which shall  represent  the same
Percentage Interest in the Partnership as one L.P. Unit.

      1.39  "GROSS  ASSET  VALUE"  means,  with  respect  to  any  asset  of the
Partnership, such asset's adjusted basis for federal income tax purposes, except
as follows:

     (a)  the initial Gross Asset Value of any asset contributed by a Partner to
          the  Partnership  shall be the gross fair market  value of such asset,
          without  reduction for liabilities,  as determined by the contributing
          Partner and the Partnership on the date of contribution thereof;

     (b)  if the General  Partner  reasonably  determines  that an adjustment is
          necessary or appropriate to reflect the relative economic interests of
          the Partners,  the Gross Asset Values of all Partnership  assets shall
          be adjusted in accordance with Sections  1.704-1(b)(2)(iv)(f)  and (g)
          of the Regulations to equal their respective gross fair market values,
          without  reduction for  liabilities,  as reasonably  determined by the
          General Partner, as of the following times:

          (1)  a  Capital   Contribution   (other  than  a  de  minimis  Capital
               Contribution)  to the Partnership by a new or existing Partner as
               consideration for a Partnership Interest; or

          (2)  the  distribution  by the Partnership to a Partner of more than a
               de minimis amount of Partnership  assets as consideration for the
               repurchase of a Partnership Interest; or


                                      -7-
<PAGE>


          (3)  the liquidation of the Partnership  within the meaning of Section
               1.704-1(b)(2)(ii)(g) of the Regulations;

     (c)  the  Gross  Asset  Values of  Partnership  assets  distributed  to any
          Partner shall be the gross fair market  values of such assets  (taking
          Section  7701(g)  of the Code  into  account)  without  reduction  for
          liabilities, as reasonably determined by the General Partner as of the
          date of distribution; and

     (d)  the Gross Asset Values of  Partnership  assets shall be increased  (or
          decreased) to reflect any  adjustments  to the adjusted  basis of such
          assets  pursuant to Sections 734(b) or 743(b) of the Code, but only to
          the extent that such adjustments are taken into account in determining
          Capital  Accounts  pursuant  to  Section  1.704-1(b)(2)(iv)(m)  of the
          Regulations  (as set forth in Appendix II);  provided,  however,  that
          Gross Asset  Values shall not be adjusted  pursuant to this  paragraph
          (d) to the extent that the General Partner reasonably  determines that
          an  adjustment  pursuant  to  paragraph  (b)  above  is  necessary  or
          appropriate  in  connection  with a transaction  that would  otherwise
          result in an adjustment pursuant to this paragraph (d).

      At all times,  Gross Asset  Values  shall be adjusted by any  Depreciation
taken into  account  with  respect to the  Partnership's  assets for purposes of
computing Net Income and Net Loss.

      1.40 "IMMEDIATE  FAMILY" means, with respect to any Person,  such Person's
spouse, parents,  parents-in-law,  children, nephews, nieces, brothers, sisters,
brothers-in-law,  sisters-in-law, stepchildren, sons-in-law and daughters-in-law
or any trust solely for the benefit of any of the foregoing family members whose
sole beneficiaries include the foregoing family members.

      1.41  "INCAPACITY"  OR  "INCAPACITATED"  means,  (i) as to any  individual
Partner,  death,  total  physical  disability  or entry by a court of  competent
jurisdiction  adjudicating  him  incompetent to manage his person or his estate;
(ii) as to any  corporation  which is a Partner,  the filing of a certificate of
dissolution,  or its  equivalent,  for the  corporation or the revocation of its
charter;  (iii) as to any  partnership  which is a Partner,  the dissolution and
commencement of winding up of the partnership;  (iv) as to any estate which is a
Partner,  the  distribution  by the fiduciary of the estate's entire interest in
the  Partnership;  (v) as to any  trustee  of a trust  which is a  Partner,  the
termination of the trust (but not the substitution of a new trustee); or (vi) as
to any Partner, the bankruptcy of such Partner. For purposes of this definition,
bankruptcy  of a Partner  shall be deemed to have  occurred when (a) the Partner
commences a voluntary  proceeding seeking  liquidation,  reorganization or other
relief under any bankruptcy, insolvency or other similar law now or hereafter in
effect;  (b) the Partner is adjudged  as bankrupt or  insolvent,  or a final and
nonappealable  order for relief under any bankruptcy,  insolvency or similar law
now or hereafter in effect has been entered against the Partner; (c) the Partner
executes  and  delivers a general  assignment  for the benefit of the  Partner's
creditors;  (d) the  Partner  files an answer  or other  pleading  admitting  or
failing to contest the  material  allegations  of a petition  filed  against the
Partner in any proceeding of the nature  described in 

                                      -8-

<PAGE>




clause (b) above;  (e) the  Partner  seeks,  consents  to or  acquiesces  in the
appointment  of a trustee,  receiver or liquidator for the Partner or for all or
any substantial  part of the Partner's  properties;  (f) any proceeding  seeking
liquidation, reorganization or other relief of or against such Partner under any
bankruptcy,  insolvency  or other similar law now or hereafter in effect has not
been  dismissed  within  120  days  after  the  commencement  thereof;  (g)  the
appointment without the Partner's consent or acquiescence of a trustee, receiver
or liquidator has not been vacated or stayed within 90 days of such appointment;
or (h) an  appointment  referred  to in clause (g) which has been  stayed is not
vacated within 90 days after the expiration of any such stay.

      1.42  "INDEMNITEE"  means (i) any Person made a party to a  proceeding  by
reason of (A) such Person's status as (1) the General  Partner,  (2) a director,
trustee or officer of the Partnership or the General Partner, or (3) a director,
trustee or officer of any other Entity,  each Person serving in such capacity at
the  request  of the  Partnership  or the  General  Partner,  or (B)  his or its
liabilities,  pursuant to a loan guarantee or otherwise, for any indebtedness of
the  Partnership  or any  Subsidiary  of  the  Partnership  (including,  without
limitation,  any  indebtedness  which the  Partnership  or any Subsidiary of the
Partnership has assumed or taken assets subject to); and (ii) such other Persons
(including  Affiliates of the General Partner or the Partnership) as the General
Partner  may  designate  from  time to time  (whether  before or after the event
giving rise to potential liability), in its sole and absolute discretion.

      1.43 "INITIAL CONTRIBUTED PROPERTY" means the Properties as defined in the
Acquisition Agreement.

      1.44 "LIEN" means,  with respect to any asset of the Partnership,  (i) any
mortgage,  deed of trust,  lien,  pledge,  encumbrance,  charge,  restriction or
security interest in or on such asset, (ii) the interest of a vendor or a lessor
under any conditional sale agreement, capital lease or title retention agreement
relating to such asset and (iii) in the case of securities, any purchase option,
call or similar right of a third party with respect to such securities.

      1.45  "LIMITED  PARTNER"  means any Person  named as a Limited  Partner in
Appendix  I,  as  such  Appendix  may be  amended  from  time  to  time,  or any
Substituted  Limited  Partner or Additional  Limited  Partner,  in such Person's
capacity as a Limited Partner of the Partnership.

      1.46 "LIMITED PARTNER INTEREST" means a Partnership  Interest of a Limited
Partner in the  Partnership  representing a fractional  part of the  Partnership
Interests  of all Partners and includes any and all benefits to which the holder
of such a Partnership  Interest may be entitled,  as provided in this Agreement,
together  with all  obligations  of such  Person  to  comply  with the terms and
provisions of this Agreement.  A Limited Partner  Interest may be expressed as a
number of L.P. Units.

      1.47 "LIQUIDATING EVENT" has the meaning set forth in Section 13.1 hereof.

                                      -9-

<PAGE>



      1.48 "LIQUIDATOR" has the meaning set forth in Section 13.2 hereof.

      1.49 "L.P.  UNIT" means a fractional,  undivided  share of the Partnership
Interests  of all  Partners  issued  pursuant to Sections  4.1, 4.2 and 4.3. The
number of L.P. Units outstanding and the Percentage Interests in the Partnership
represented by such L.P. Units are set forth in Appendix I, as such Appendix may
be amended from time to time.  The ownership of L.P. Units shall be evidenced by
such form of  certificate  for units as the General  Partner adopts from time to
time  unless  the  General  Partner  determines  that  the L.P.  Units  shall be
uncertificated securities.

      1.50 "L.P. UNIT MAJORITY" means the Limited Partners holding the right
to vote, in the aggregate, a majority of the total number of L.P. Units
outstanding in the Operating Partnership.

      1.51 "NET  INCOME"  OR "NET LOSS"  means,  for each  fiscal  year or other
applicable  period, an amount equal to the Partnership's  taxable income or loss
for such year or period as  determined  for federal  income tax  purposes by the
General  Partner,  determined in accordance with Section 703(a) of the Code (for
this purpose, all items of income, gain, loss or deduction required to be stated
separately  pursuant to Section  703(a) of the Code shall be included in taxable
income or loss),  adjusted  as  follows:  (a) by  including  as an item of gross
income any tax-exempt income received by the Partnership and not otherwise taken
into  account  in  computing  Net  Income  or Net  Loss;  (b) by  treating  as a
deductible  expense any  expenditure  of the  Partnership  described  in Section
705(a)(2)(B)  of the  Code  (or  which  is  treated  as a  Section  705(a)(2)(B)
expenditure pursuant to Section 1.704-1(b)(2)(iv)(i) of the Regulations) and not
otherwise  taken into  account in  computing  Net Income or Net Loss,  including
amounts paid or incurred to organize the Partnership (unless an election is made
pursuant to Section  709(b) of the Code) or to promote the sale of  interests in
the Partnership and by treating deductions for any losses incurred in connection
with the sale or exchange of Partnership property disallowed pursuant to Section
267(a)(1)  or  707(b)  of  the  Code  as   expenditures   described  in  Section
705(a)(2)(B)  of the Code;  (c) by taking into account  Depreciation  in lieu of
depreciation,  depletion,  amortization and other cost recovery deductions taken
into account in computing  taxable income or loss; (d) by computing gain or loss
resulting from any  disposition  of  Partnership  property with respect to which
gain or loss is recognized  for federal  income tax purposes by reference to the
Gross Asset Value of such  property  rather than its adjusted tax basis;  (e) in
the event of an  adjustment  of the Gross Asset Value of any  Partnership  asset
which requires that the Capital Accounts of the Partnership be adjusted pursuant
to Sections 1.704-1(b)(2)(iv)(e), (f) and (g) of the Regulations, by taking into
account  the  amount  of  such  adjustment  as if  such  adjustment  represented
additional Net Income or Net Loss pursuant to Appendix II; and (f) by not taking
into account in computing Net Income or Net Loss items  separately  allocated to
the Partners pursuant to Sections 1 and 2 of Appendix II.

      1.52 "NEW  EQUITY  FINANCING  RIGHT" has the  meaning set forth in Section
8.8.

                                      -10-
<PAGE>



      1.53  "NONRECOURSE  DEDUCTIONS"  has the meaning set forth in  Regulations
Sections 1.704-2(b)(1) and 1.704-2(c).

      1.54  "NONRECOURSE  LIABILITIES"  has the meaning set forth in Regulations
Section 1.704-2(b)(3).

      1.55 "OPERATING PARTNERSHIP" means, collectively, Mission West
Properties, L.P., Mission West Properties, L.P. I, Mission West Properties,
L.P. II and Mission West Properties, L.P. III.

      1.56  "PARTNER"  means  the  General  Partner  or a Limited  Partner,  and
"Partners" means the General Partner and the Limited Partners collectively.

      1.57 "PARTNER MINIMUM GAIN" means an amount,  with respect to each Partner
Nonrecourse  Debt,  equal to the  Partnership  Minimum Gain that would result if
such  Partner  Nonrecourse  Debt  were  treated  as  a  Nonrecourse   Liability,
determined in accordance with Regulations Section 1.704-2(i)(3).

      1.58 "PARTNER  NONRECOURSE  DEBT" has the meaning set forth in Regulations
Section 1.704-2(b)(4).

      1.59  "PARTNER  NONRECOURSE  DEDUCTIONS"  has the  meaning  set  forth  in
Regulations  Section  1.704-2(i)(2),  and  the  amount  of  Partner  Nonrecourse
Deductions with respect to a Partner  Nonrecourse Debt for a Partnership taxable
year shall be  determined in accordance  with the rules of  Regulations  Section
1.704-2(i)(2).

      1.60  "PARTNERSHIP"  means  the  limited  partnership   governed  by  this
Agreement, and any successor thereto.

      1.61 "PARTNERSHIP INTEREST" means an ownership interest in the Partnership
representing an Adjusted Contribution by either a Limited Partner or the General
Partner  and  includes  any and all  benefits  to  which  the  holder  of such a
Partnership  Interest  may be entitled as provided in this  Agreement,  together
with all  obligations  of such Person to comply with the terms and provisions of
this  Agreement.  A  Partnership  Interest  may be expressed as a number of L.P.
Units.

      1.62  "PARTNERSHIP  MINIMUM GAIN" has the meaning set forth in Regulations
Section  1.704-2(b)(2),  and the amount of Partnership  Minimum Gain, as well as
any net increase or decrease in a Partnership  Minimum  Gain,  for a Partnership
taxable year shall be  determined in  accordance  with the rules of  Regulations
Section 1.704-2(d).

      1.63  "PARTNERSHIP  RECORD DATE" means the record date  established by the
General Partner for the  distribution of Available Cash pursuant to Section 5.1,
which  shall be the same as the record  date  established  by the  Company for a
distribution  to  its  shareholders  of  some  or all of  its  portion  of  such
distribution.

                                      -11-

<PAGE>


      1.64 "PARTNERSHIP YEAR" means the fiscal year of the Partnership, which is
the calendar year, as set forth in Section 9.2.

      1.65  "PENDING  DEVELOPMENT  PROJECTS"  means three Berg  Group-owned  R&D
Property  development  projects  which the Operating  Partnership  has agreed to
acquire upon their completion pursuant to the terms of the Acquisition Agreement
and the related  Pending  Projects  Option  Agreement  to be entered into by the
parties  thereto  upon  approval  of  certain   transactions  by  the  Company's
shareholders.

      1.66 "PARTNERSHIP INTEREST" means, as to a Partner, the fractional part of
the Partnership Interests owned by such Partner and expressed as a percentage as
specified in Appendix I, as such Appendix may be amended from time to time.

      1.67  "PERMITTED  PARTNERS"  has the meaning set forth in Section  1(b) of
Appendix II.

      1.68  "PERMITTED  TRANSFEREE"  means any  person  to whom  L.P.  Units are
Transferred in accordance with Section 11.3 of this Agreement.

      1.69 "PERSON" means an individual or Entity.

      1.70  "PRECONTRIBUTION  GAIN" has the meaning set forth in Section 3(c) of
Appendix II.

      1.71 "PUT RIGHTS" shall have the meaning provided in Section 8.7.

      1.72 "PROTECTIVE  PROVISIONS  EXPIRATION DATE" means the date on which the
members of the Berg Group own less than 15% of the Common  Stock,  treating  all
Equity  Securities  of the Company and all L.P.  Units owned by such  members as
Common Stock outstanding for this purpose.

      1.73  "PROPERTIES"  has the  meaning  given  such term in the  Acquisition
Agreement.
      1.74  "QUARTER"  means each of the three month periods ending on March 31,
June 30, September 30 and December 31.

      1.75  "REGULATIONS"  means the final,  temporary  or  proposed  Income Tax
Regulations  promulgated under the Code, as such regulations may be amended from
time to time (including corresponding provisions of succeeding regulations).

      1.76 "REIT" means a real estate investment trust as defined in Section 856
of the Code.

      1.77 "REIT REQUIREMENTS"  means all of the requirements  imposed under the
Code on any entity seeking to qualify and remain qualified as a REIT.

                                      -12-
<PAGE>



      1.78  "RESTRICTED  PARTNER"  has the meaning set forth in Section  1(b) of
Appendix II.

      1.79 "SEC" means the U.S. Securities and Exchange Commission.

      1.80 "SECURITIES ACT" means the Securities Act of 1933, as amended.

      1.81 "STOCK  OPTION PLAN" means the  Company's  1997 Stock Option Plan and
any other plan adopted from time to time by the Company pursuant to which shares
of Common  Stock are issued,  or options to acquire  shares of Common  Stock are
granted,  to  consultant,  employees or directors of the Company,  the Operating
Partnership  or their  respective  Affiliates in  consideration  for services or
future services.

      1.82  "SUBSIDIARY"  means,  with respect to any Person,  any  corporation,
partnership  or other  entity of which a majority of (i) the voting power of the
Voting Securities;  or (ii) the outstanding equity interests, is owned, directly
or indirectly, by such Person.

      1.83  "SUBSTITUTED  LIMITED  PARTNER"  means a Person who is admitted as a
Limited Partner to the Partnership pursuant to Section 11.4 hereof.

      1.84 "TAX ITEMS" has the meaning set forth in Appendix II.

      1.85 "TERMINATING CAPITAL TRANSACTION" means any Change of Control
Transaction.

      1.86  "TOTAL  MARKET   CAPITALIZATION"  means  the  market  value  of  the
outstanding  Common  Stock  determined  as if all L.P.  Units  in the  Operating
Partnership had been converted into Common Stock at the Exchange Factor plus the
total debt of the Company and the Operating Partnership.

      1.87 "TRANSFER" as a noun, means any sale, assignment, conveyance, pledge,
hypothecation,  gift,  encumbrance or other  transfer,  and as a verb,  means to
sell, assign, convey, pledge, hypothecate, give, encumber or otherwise transfer.

      1.88 "UNIT" means an equal  undivided  interest in all of the  outstanding
Partnership Interests.

      1.89  "UNITED  STATES  PERSON"  means a  holder  of L.P.  Units  who is an
individual  who is a citizen or resident of the United  States;  a  corporation,
partnership  or other entity  created or organized in, or under the laws of, the
United States or any State;  an estate the income of which from sources  without
the United States is includable in gross income for United States federal income
tax purposes; a trust the primary supervision of which is exercisable by a court
within the United States and having one or more United States  fiduciaries  with
authority to control all  substantial  decisions  of such trust;  and any

                                      -13-
<PAGE>


Person  whose  income  or gain in  respect  of the  L.P.  Units  is  effectively
connected with the conduct of a United States trade or business.

      1.90 "VOTING  SECURITIES"  means any Equity  Security  which  entitles the
holder thereof to vote on all matters  submitted for a vote of equity holders by
the issuer of such Equity Security, including the right to vote for directors in
the case of a corporation.

      Certain  additional  terms  and  phrases  have the  meanings  set forth in
Appendix II.

ARTICLE 2. ORGANIZATIONAL MATTERS.

      2.1  CONTINUATION.  The Partners  hereby agree to continue the Partnership
under and  pursuant  to the Act.  Except  as  expressly  provided  herein to the
contrary,  the rights and obligations of the Partners and the administration and
termination  of the  Partnership  shall be governed by the Act. The  Partnership
Interest of each Partner shall be personal property for all purposes.

      2.2 NAME. The name of the  Partnership  shall be Mission West  Properties,
L.P. [ ]. The  Partnership's  business may be conducted  under any other name or
names deemed advisable by the General Partner, including the name of the General
Partner or any  Affiliate  thereof.  The words  "Limited  Partnership,"  "L.P.,"
"Ltd." or similar words or letters shall be included in the  Partnership's  name
where necessary to comply with the laws of any jurisdiction. The General Partner
in its sole and absolute  discretion  may, upon 5 days' prior written  notice to
the Limited Partners, change the name of the Partnership.

      2.3  REGISTERED  OFFICE AND AGENT;  PRINCIPAL  OFFICE.  The address of the
registered  office of the  Partnership in the State of Delaware and the name and
address of the registered agent for service of process on the Partnership in the
State  of  Delaware  is The  Corporation  Trust  Company,  1029  Orange  Street,
Wilmington,  Delaware 19801.  The principal  office of the Partnership  shall be
10050 Bandley Drive,  Cupertino,  California  95014,  or such other place as the
General  Partner  may from  time to time  designate  by  notice  to the  Limited
Partners.  The  Partnership  may maintain  offices at such other place or places
within or outside the State of Delaware as the General Partner deems advisable.

      2.4  POWER OF ATTORNEY.

     A.   Each Limited Partner and each Assignee hereby constitutes and appoints
          the General  Partner,  any  Liquidator,  and  authorized  officers and
          attorneys-in-fact  of each, and each of those acting  singly,  in each
          case with full power of substitution, as its true and lawful agent and
          attorney-in-fact, with full power and authority in its name, place and
          stead to:

          (1)  execute,  swear to, acknowledge,  deliver, file and record in the
               appropriate  public offices (a) all  certificates,  documents and
               other instruments (including,  without limitation, this Agreement
               and the Certificate  and all

                                      -14-
<PAGE>

               amendments or  restatements  thereof) that the General Partner or
               the Liquidator deems appropriate or necessary to form, qualify or
               continue the existence or  qualification  of the Partnership as a
               limited  partnership  (or a  partnership  in  which  the  Limited
               Partners have limited  liability) in the State of Delaware and in
               all other  jurisdictions in which the Partnership may or plans to
               conduct business or own property,  including, without limitation,
               any  documents  necessary or advisable to convey any  Contributed
               Property to the Partnership; (b) all instruments that the General
               Partner deems  appropriate or necessary to reflect any amendment,
               change,   modification   or  restatement  of  this  Agreement  in
               accordance  with  its  terms;   (c)  all  conveyances  and  other
               instruments  or  documents  that  the  General   Partner  or  the
               Liquidator   deems   appropriate  or  necessary  to  reflect  the
               dissolution and  liquidation of the  Partnership  pursuant to the
               terms  of  this  Agreement,   including,  without  limitation,  a
               certificate of cancellation;  (d) all instruments relating to the
               admission,  withdrawal,  removal or  substitution  of any Partner
               pursuant to, or other events  described in, Article 11, 12 or 13,
               or  the  Capital   Contribution  of  any  Partner;  and  (e)  all
               certificates,  documents  and other  instruments  relating to the
               determination  of  the  rights,  preferences  and  privileges  of
               Partnership Interest; and

          (2)  execute,  swear  to,  seal,  acknowledge  and file  all  ballots,
               consents,  approvals, waivers, certificates and other instruments
               appropriate or necessary,  in the sole and absolute discretion of
               the General Partner or any Liquidator,  to make, evidence,  give,
               confirm or ratify any vote, consent, approval, agreement or other
               action  which is made or given by the  Partners  hereunder  or is
               consistent  with the terms of this  agreement or  appropriate  or
               necessary,  in the sole  discretion of the General Partner or any
               Liquidator, to effectuate the terms or intent of this Agreement.

      Nothing  contained  herein shall be construed as  authorizing  the General
Partner or any  Liquidator to amend this  Agreement  except in  accordance  with
Article 14, or as may be otherwise expressly provided for in this Agreement.

     B.   The foregoing  power of attorney is hereby  declared to be irrevocable
          and a power coupled with an interest,  in recognition of the fact that
          each of the  Partners  will be relying  upon the power of the  General
          Partner and any Liquidator to act as contemplated by this Agreement in
          any filing or other action by it on behalf of the Partnership,  and it
          shall survive and not be affected by the subsequent  Incapacity of any
          Limited  Partner or Assignee and the Transfer of all or any portion of
          such Limited  Partner's or Assignee's  L.P.  Units and shall extend to
          such Limited  Partner's or Assignee's heirs,  successors,  assigns and
          personal representatives. Each such Limited Partner or Assignee hereby
          agrees to be bound by any  representation  made by the General Partner
          or any  Liquidator,  acting in good  faith  pursuant  to such power of
          attorney,  and each such Limited Partner or Assignee hereby waives any
          and  all  defenses  which  may be  available  to  contest,  negate  or
          disaffirm the action of the General Partner or any  Liquidator,  taken
          in good faith under such power of attorney.  Each  Limited  Partner or
          Assignee  shall  execute  and  deliver to the  General  Partner or 

                                      -15-
<PAGE>


          the Liquidator, within 15 days after receipt of the General Partner' s
          or Liquidator's request therefor, such further designation,  powers of
          attorney  and  other   instruments  as  the  General  Partner  or  the
          Liquidator,  as the case may be, deems  necessary to  effectuate  this
          Agreement and the purposes of the Partnership.

      2.5 TERM.  The term of the  Partnership  shall commence on the date hereof
and shall continue until December 31, 2048,  unless the Partnership is dissolved
sooner pursuant to the provisions of Article 13 or as otherwise provided by law.

ARTICLE 3. PURPOSE.

      3.1 PURPOSE  AND  BUSINESS.  The purpose and nature of the  business to be
conducted by the  Partnership  is to conduct any  business  that may be lawfully
conducted  by a limited  partnership  organized  pursuant to the Act  including,
without limitation,  to engage in the following  activities:  to acquire,  hold,
own, develop,  construct,  improve,  maintain,  operate,  sell, lease, transfer,
encumber,   convey,  exchange,  and  otherwise  dispose  of  or  deal  with  the
Properties,  and the  Pending  Development  Projects;  to  acquire,  hold,  own,
develop, construct, improve, maintain, operate, sell, lease, transfer, encumber,
convey,  exchange,  and  otherwise  dispose  of or deal with  real and  personal
property of all kinds;  to undertake such other  activities as may be necessary,
advisable,  desirable or convenient to the business of the  Partnership;  and to
engage in such other ancillary  activities as shall be necessary or desirable to
effectuate the foregoing purposes.

      3.2 POWERS. The Partnership is empowered to do any and all acts and things
necessary,  appropriate,  proper, advisable, incidental to or convenient for the
furtherance  and  accomplishment  of the  purposes and business for which it has
been formed and for the  protection  and benefit of the  Partnership;  provided,
that the Partnership  shall not take, and shall refrain from taking,  any action
which,  in the  judgment  of the  General  Partner,  in its  sole  and  absolute
discretion, (i) could adversely affect the ability of the Company to continue to
qualify as a REIT; (ii) could subject the Company to any additional  taxes under
Section  857 or Section  4981 of the Code;  or (iii)  could  violate  any law or
regulation  of any  governmental  body or agency  having  jurisdiction  over the
Company or its  securities,  unless  such action (or  inaction)  shall have been
specifically  consented to by the Company,  if not the General Partner,  and the
L.P. Unit Majority.

ARTICLE 4. CAPITAL CONTRIBUTIONS.

      4.1  CAPITAL CONTRIBUTIONS OF THE PARTNERS.

     A.   At the time of the execution of this Agreement, the Partners have made
          the Adjusted  Contributions,  or shall make the Capital  Contributions
          contemplated by the Acquisition Agreement,  as set forth in Appendix I
          to this  Agreement.  Each Limited  Partner shall own L.P. Units in the
          amount  set forth for such  Partner  in  Appendix  I and shall  have a
          Percentage  Interest  in the  Partnership  as set forth in Appendix I,
          which shall be adjusted in Appendix I from time to time by the General
          Partner  to the extent  

                                      -16-
<PAGE>


          necessary  to  reflect   accurately   exchanges,   additional  Capital
          Contributions,  the issuance of additional Partnership Interests,  the
          exercise of Put Rights with  respect to L.P.  Units or similar  events
          having an effect on any Partner's Percentage Interest.

     B.   The number of Units held by the General  Partner,  in its  capacity as
          general partner,  shall be deemed to be the General Partner  Interest.
          Except as provided in Sections 4.2, 10.5 and 13.3,  the Partners shall
          have no obligation to make any additional Capital Contributions.

      4.2  ADDITIONAL FUNDS; RESTRICTIONS ON COMPANY.

     A.   The sums of money  required to finance the business and affairs of the
          Partnership  shall be derived from the initial  Capital  Contributions
          made to the Partnership by the Company as set forth in the Acquisition
          Agreement and from funds  generated from the operation and business of
          the Partnership including, without limitation,  distributions directly
          or indirectly received by the Partnership from Available Cash provided
          by the Operating  Partnership.  In the event  additional  financing is
          needed from sources other than as set forth in the preceding  sentence
          for any reason, subject to the provisions of Sections 8.8 and 8.9, the
          General  Partner may, in its  discretion,  in such amounts and at such
          times as it solely shall  determine  to be  necessary or  appropriate,
          obtain  additional funds for the Operating  Partnership which shall be
          allocated to each of the partnerships included therein,  including the
          Partnership,  pro rata in  proportion  to the  ratio of the  number of
          Units then outstanding in each such Partnership to the total number of
          L.P. Units then  outstanding in the Operating  Partnership  taken as a
          whole ("Pro Rata Share").  Accordingly, to the extent of such Pro Rata
          Share of the  Partnership  and  subject to  Section  8.9 and any other
          limitations contained in this Agreement or the Acquisition  Agreement,
          the General Partner may, (i) cause the Partnership to issue additional
          Partnership  Interests and admit  additional  Limited  Partners to the
          Partnership  in  accordance  with  Section 4.3;  (ii) make  additional
          Capital Contributions to the Partnership (subject to the provisions of
          Section 4.2B); (iii) cause the Partnership to borrow money, enter into
          loan arrangements,  issue debt securities, obtain letters of credit or
          otherwise  borrow money on a secured or unsecured  basis; or (iv) make
          loans to the Partnership  (subject to Section 4.2B). In no event shall
          the  Limited  Partners  be  required  to make any  additional  Capital
          Contributions  or any loan to,  or  otherwise  provide  any  financial
          accommodation for the benefit of, the Partnership pursuant to any such
          permitted action by the General  Partner,  except insofar as a Limited
          Partner  has  exercised  its New Equity  Financing  Right  pursuant to
          Section 8.8.

     B.   Except as agreed  otherwise at the time by vote or written  consent of
          the L.P. Unit Majority:  (i) the Company shall lend to the Partnership
          its Pro Rata Share of the proceeds of or consideration received by the
          Company  from all loans and  advances to the  Company  pursuant to any
          financial  borrowing  arrangement  on the  same  financial  terms  and
          conditions,  including interest rate and repayment schedule,  as shall
          be  applicable  with  respect to or  incurred in  connection  with the
          issuance  of  such  loans  and  advances  to the  Company  (which  the
          Partnership may, in turn, lend to any other  

                                      -17-
<PAGE>


          partnership  constituting part of the Operating Partnership);  (ii) in
          the case of Equity  Securities senior or junior to the Common Stock as
          to  dividends  and   distributions  on  liquidation,   which  are  not
          convertible  into Common  Stock as of the issuance  date,  the Company
          shall  contribute to the Partnership the proceeds of or  consideration
          (including  any property or other non-cash  assets)  received for such
          Securities  and the proceeds of, or  consideration  received from, any
          subsequent  exercise,  exchange or conversion thereof (if applicable),
          and shall receive from the Partnership,  new Partnership  Interests in
          the  Partnership  in  consideration  therefor with the same  financial
          terms  and  conditions,   including   dividend,   dividend   priority,
          liquidation  preference,  conversion  and  redemption  rights,  as are
          applicable  to such  Equity  Securities;  (iii) in the case of  Common
          Stock, or other Equity Securities  convertible into Common Stock as of
          the issuance date,  including,  without  limitation,  shares of Common
          Stock or other  Equity  Securities  issued  upon  exercise  of options
          issued under the Stock Option Plan or any other Employee  Benefit Plan
          of the Company,  the Company shall  contribute to the  Partnership the
          proceeds of or consideration (including any property or other non-cash
          assets)   received  for  such  Securities  and  the  proceeds  of,  or
          consideration  received  from, any  subsequent  exercise,  exchange or
          conversion  thereof  (if  applicable),  and  shall  receive  from  the
          Partnership a number of additional  Units of General Partner  Interest
          in  consideration  therefor  equal to the product of (x) the number of
          shares  of  Common  Stock or other  Equity  Securities  issued  by the
          Company,  multiplied by (y) the Exchange  Factor in effect on the date
          of such  contribution;  and (iv) in the case of Common  Stock or other
          Equity  Securities  issued upon the  exercise or  surrender  of rights
          under a stock  option,  warrant,  or any  other  right  for  which the
          Company does not receive proceeds,  and issues less than the number of
          shares of Common  Stock or other  Equity  Securities  subject  to such
          option,  warrant or other right to the holder  thereof  retaining  the
          excess  of such  shares  as  payment  of the  purchase  price  (a "net
          exercise"),  or where the Company uses the proceeds  received pursuant
          to a Dividend  Reinvestment  Plan to acquire shares of Common Stock or
          other Equity  Securities  to be issued to the  shareholder  exercising
          such right, the Company shall receive from the Partnership a number of
          additional  Units of  General  Partner  Interest  equal to the  actual
          number of shares of Common Stock or other Equity  Securities so issued
          to the shareholder multiplied by the Exchange Factor.

      4.3 ISSUANCE OF ADDITIONAL PARTNERSHIP INTERESTS;  ADMISSION OF ADDITIONAL
LIMITED  PARTNERS.  In addition  to any  Partnership  Interests  issuable by the
Partnership  pursuant to Section 4.2, and subject to the  provisions of Sections
8.8 and 8.9, the General Partner is authorized to cause the Partnership to issue
additional Partnership Interests (or options therefor) in the form of L.P. Units
or other Partnership Interests senior or junior to the L.P. Units to any Persons
at any time or from  time to time,  for  consideration  per Unit of  Partnership
Interest not less than the Common Stock Price determined at the initial issuance
date divided by the Exchange Factor, and on such other terms and conditions,  as
the General Partner shall establish provided, however, that (i) each partnership
included in the  Operating  Partnership  shall effect its Pro Rata Share of such
issuance,  (ii) such issuance  does not cause the  Partnership  to become,  with
respect to any Employee Benefit Plan subject to Title I of ERISA or Section 4975
of the Code, a "party in interest"  (as defined in Section  3(14) of ERISA) or

                                      -18-
<PAGE>


a "disqualified  person" (as defined in Section 4975(e) of the Code);  and (iii)
such  issuance  does not cause any portion of the assets of the  Partnership  to
constitute assets of any Employee Benefit Plan subject to Section  2510.3-101 of
the  regulations  of the  United  States  Department  of Labor.  Subject  to the
limitations  set forth in the preceding  sentence,  the General Partner may take
such steps as it, in its reasonable  discretion,  deems necessary or appropriate
to admit any Person as a Limited Partner of the Partnership,  including, without
limitation, amending the Certificate,  Appendix I or any other provision of this
Agreement.

      4.4  REPURCHASE  OF COMPANY  EQUITY  SECURITIES.  In the event the Company
shall elect to purchase  from its  shareholders  shares of Common  Stock for the
purpose of delivering  such shares to satisfy an  obligation  under any Dividend
Reinvestment  Plan or Employee  Benefit Plan  adopted by the  Company,  or shall
repurchase  any other  Equity  Securities  of the Company  pursuant to any other
share  repurchase  obligation or arrangement  undertaken by the Company with any
Company shareholder,  including preferred stock redemptions,  the purchase price
paid by the  Company  for such  shares and any other  expenses  incurred  by the
Company in  connection  with such purchase  shall be considered  expenses of the
Partnership  and shall be  reimbursed  to the Company,  subject to the condition
that: (i) if such shares subsequently are to be sold by the Company, the Company
shall pay to the  Partnership  any  proceeds  received  by the  Company for such
shares of Common Stock or other Equity Securities  (provided that an exchange of
shares of Common Stock for L.P. Units pursuant to the Exchange Rights  Agreement
would not be considered a sale for such  purposes);  and (ii) if such shares are
not re-transferred by the Company within 30 days after the purchase thereof, the
General  Partner  shall cause the  Partnership  to cancel the number of Units of
General Partner  Interest held by the Company  determined by multiplying (x) the
quotient obtained by dividing the total amount deemed paid by the Partnership by
the Common Stock Price determined as of the repurchase date, by (y) the Exchange
Factor in effect on the date of such repurchase.

      4.5 NO THIRD PARTY  BENEFICIARY.  No creditor or other third party  having
dealings  with the  Partnership  shall  have the right to  enforce  the right or
obligation  of any Partner to make Capital  Contributions  or loans or to pursue
any other right or remedy hereunder or at law or in equity,  it being understood
and agreed that the provisions of this Agreement shall be solely for the benefit
of,  and may be  enforced  solely by, the  parties  hereto and their  respective
successors and assigns.

      4.6 NO INTEREST;  NO RETURN.  No Partner  shall be entitled to interest on
its  Capital  Contribution  or on such  Partner's  Capital  Account.  Except  as
provided in Section 8.7 or Article 13 of this  Agreement,  or by law, no Partner
shall have any right to demand or receive the return of its Capital Contribution
from the Partnership.

ARTICLE 5. DISTRIBUTIONS.

      5.1 REGULAR  DISTRIBUTIONS.  Except for distributions  pursuant to Section
13.2 in connection with the dissolution and liquidation of the Partnership,  and
subject to the  provisions  of Sections  5.3, 5.4 and 5.5,  the General  Partner
shall cause the  Partnership 

                                      -19-
<PAGE>


to distribute,  from time to time as determined by the General  Partner,  but in
any event not less frequently than once each Quarter, the Partnership's Pro Rata
Share of all Available Cash, to the Partners,  in accordance with each Partner's
respective  Percentage  Interest;  provided,  however,  that in no  event  may a
Limited  Partner receive a distribution of Available Cash with respect to a L.P.
Unit, if such Limited Partner is entitled to receive a distribution  out of such
Available  Cash with respect to a share of Common Stock for which such L.P. Unit
has been exchanged.

      5.2  QUALIFICATION  AS A REIT.  The General  Partner  shall be entitled to
cause the Partnership to distribute to the General Partner the Partnership's Pro
Rata Share of Available Cash distributed by the Operating  Partnership to enable
the General Partner to pay shareholder  dividends that will (i) satisfy the REIT
Requirements  for  distributions  to  shareholders,  and (ii) avoid any  federal
income or excise tax liability of the General Partner;  provided,  however,  the
General  Partner is not bound to comply  with this  covenant  to the extent such
distributions would violate applicable Delaware law.

      5.3 WITHHOLDING.  With respect to any withholding tax or other similar tax
liability or obligation to which the  Partnership  may be subject as a result of
any act or status of any  Partner or to which the  Partnership  becomes  subject
with  respect to any Unit,  the  Partnership  shall  have the right to  withhold
amounts of Available Cash  distributable to such Partner or with respect to such
Units, to the extent of the amount of such  withholding tax or other similar tax
liability or obligation pursuant to the provisions contained in Section 10.5.

      5.4  ADDITIONAL   PARTNERSHIP   INTERESTS.   If  the  Partnership   issues
Partnership  Interests in accordance  with Section 4.2 or 4.3 which are entitled
to certain distribution priorities,  Section 5.1 shall be amended, as necessary,
to  reflect  the  distribution   priority  of  such  Partnership  Interests  and
corresponding amendments shall be made to the provisions of Appendix II.

      5.5 DISTRIBUTIONS  UPON LIQUIDATION.  Proceeds from a Terminating  Capital
Transaction  and any other cash  received or  reductions  in reserves made after
commencement of the  liquidation of the Partnership  shall be distributed to the
Partners in accordance with Section 13.2.

ARTICLE 6. ALLOCATIONS.

      The Net Income,  Net Loss, and other  Partnership  items of income,  gain,
loss,  deduction  or credit as  provided  under  the  Code,  shall be  allocated
pursuant to the provisions of Appendix II, as amended from time to time.

ARTICLE 7. MANAGEMENT AND OPERATION OF BUSINESS.

      7.1  MANAGEMENT.

     A.   Except as otherwise expressly provided in this Agreement,  and subject
          to the  provisions  of Section  8.9,  all  management  powers over the
          business  and affairs  the  

                                      -20-
<PAGE>

          Partnership  are  and  shall  be  exclusively  vested  in the  General
          Partner, and no Limited Partner shall have any right to participate in
          or exercise  control or management power over the business and affairs
          of the  Partnership.  The  General  Partner  may not be removed by the
          Limited Partners, with or without cause. In addition to the powers now
          or hereafter granted a general partner of a limited  partnership under
          the Act or which are  granted to the General  Partner  under any other
          provision of this Agreement, the General Partner shall have full power
          and authority to make contracts,  sign documents,  conduct litigation,
          acquire  and  convey   property,   hire  employees,   consultants  and
          professionals,  raise capital, borrow funds, incur liabilities, invest
          funds, comply with all applicable laws, and do all other things deemed
          necessary or desirable by the General  Partner to conduct the business
          of the  Partnership  on behalf of the  Partnership;  to  exercise  all
          powers set forth in Section  3.2, and to  effectuate  the purposes set
          forth in Section  3.1,  provided  that any  exercise of the  foregoing
          rights and powers must be consistent with the REIT Requirements.

     B.   Except as provided in Section 8.9, each of the Limited Partners agrees
          that the General Partner is authorized to execute, deliver and perform
          the agreements and  transactions on behalf of the Partnership  without
          any further act, approval or vote of the Partners, notwithstanding any
          other  provision  of this  Agreement to the fullest  extent  permitted
          under  the  Act or  other  applicable  law,  rule or  regulation.  The
          execution,  delivery  or  performance  by the  General  Partner or the
          Partnership  of any  agreement  authorized  or  permitted  under  this
          Agreement  shall not constitute a breach by the General Partner of any
          duty that the General  Partner may owe the  Partnership or the Limited
          Partners  or any other  Persons  under this  Agreement  or of any duty
          stated or implied by law or equity.

     C.   At all times from and after the date hereof,  in  accordance  with the
          provisions of the Acquisition Agreement, the General Partner may cause
          the Partnership to establish and maintain at any and all times working
          capital  accounts and other cash or similar balances in such amount as
          the  General  Partner,  in its sole  and  absolute  discretion,  deems
          appropriate  and  reasonable  from  time to time.  Such  accounts  may
          include funds of the General Partner and the other partnerships in the
          Operating  Partnership,  which the  General  Partner  shall be free to
          commingle.

     D.   In exercising its authority under this Agreement,  the General Partner
          shall take into  account  the tax  consequences  to any Partner of any
          action taken by it and shall select the  alternative  which appears at
          the time to present the least adverse tax  consequences to the Limited
          Partners.  By way of example,  but not of  limitation:  If the General
          Partner decides to refinance  (directly or indirectly) any outstanding
          indebtedness  of  the  Partnership,  the  General  Partner  shall  use
          reasonable  efforts to  structure  such  refinancing  in a manner that
          minimizes  any adverse tax  consequences  resulting  therefrom  to the
          Limited  Partners.  The General Partner and the Partnership  shall not
          have  liability  to a Limited  Partner  under any  circumstances  as a
          result of an income tax liability  incurred by such Limited Partner as
          a result of a necessary  action (or  inaction) by the General  Partner
          taken  pursuant to its  authority  under and in  accordance  with this
          Agreement where avoiding the resulting  adverse tax

                                      -21-
<PAGE>

          consequences to a Limited Partner was not reasonably practicable under
          the circumstances.

      7.2 CERTIFICATE OF LIMITED PARTNERSHIP. The General Partner shall file the
amended  Certificate  with the Secretary of State of Delaware as required by the
Act. The General  Partner shall use all reasonable  efforts to cause to be filed
such other  certificates  or documents  as may be  reasonable  and  necessary or
appropriate for the formation,  continuation,  qualification  and operation of a
limited partnership (or a partnership in which the limited partners have limited
liability)  in the State of Delaware  and any other  state,  or the  District of
Columbia,  in which the Partnership may elect to do business or own property. To
the  extent  that  such  action  is  determined  by the  General  Partner  to be
reasonable  and  necessary  or  appropriate,  the  General  Partner  shall  file
amendments to and  restatements  of the  Certificate and do all of the things to
maintain the Partnership as a limited partnership (or a partnership in which the
limited partners have limited liability) under the laws of the State of Delaware
and each other state, or the District of Columbia,  in which the Partnership may
elect to do business or own property.  Subject to the terms of Section  8.5A(iv)
hereof,  the General Partner shall not be required,  before or after filing,  to
deliver  or mail a copy  of the  Certificate  or any  amendment  thereto  to any
Limited Partner.

      7.3  REIMBURSEMENT OF THE GENERAL PARTNER AND THE COMPANY.

     A.   Except as provided in this Section 7.3 and elsewhere in this Agreement
          (including the provisions of Articles 5 and 6 regarding distributions,
          payments,  and  allocations to which it may be entitled),  the General
          Partner shall not be compensated  for its services as general  partner
          of the Partnership.

     B.   The General  Partner,  shall be reimbursed on a monthly basis, or such
          other basis as it may  determine in its sole and absolute  discretion,
          for  all  expenses  that  it  incurs  relating  to the  ownership  and
          operation of, or for the benefit of, the Partnership;  provided,  that
          the amount of any such reimbursement  shall be reduced by any interest
          earned by the General  Partner with respect to bank  accounts or other
          instruments  or accounts  held by it in its name.  Such  reimbursement
          shall  be in  addition  to  any  reimbursement  made  as a  result  of
          indemnification pursuant to Section 7.6.

      7.4 OUTSIDE  ACTIVITIES OF THE GENERAL PARTNER.  The General Partner shall
not  directly or  indirectly  enter into or conduct any  business  other than in
connection  with the  ownership,  acquisition,  development  and  disposition of
Partnership Interests and the management of the business of the Partnership, and
such  activities  as  are  incidental  thereto.  The  General  Partner  and  any
Affiliates  of the General  Partner may acquire  Limited  Partner  Interests and
shall be entitled to exercise all rights of a Limited  Partner  relating to such
Limited Partner Interests.

      7.5  CONTRACTS WITH AFFILIATES.

     A.   The  Partnership  may lend or contribute  funds or other assets to its
          Subsidiaries or other Persons in which it has an equity investment and
          such  Persons

                                      -22-
<PAGE>



          may  borrow  funds  from  the  Partnership,  on terms  and  conditions
          established  in the  sole  and  absolute  discretion  of  the  General
          Partner. The foregoing authority shall not create any right or benefit
          in favor of any Subsidiary or any other Person.

     B.   Except as provided in Section 7.4, the Partnership may Transfer assets
          to joint ventures, other partnerships,  corporations or other business
          entities  in which it is or thereby  becomes a  participant  upon such
          terms and subject to such  conditions  consistent  with this Agreement
          and  applicable law as the General  Partner,  in its sole and absolute
          discretion, believes are advisable.

     C.   Except  as  expressly   permitted  by  this   Agreement  or  otherwise
          contemplated by the Acquisition Agreement, neither the General Partner
          nor any of its Affiliates shall sell,  Transfer or convey any property
          to, or  purchase  any  property  from,  the  Partnership,  directly or
          indirectly, except pursuant to transactions that are determined by the
          General Partner in good faith to be fair and reasonable.

     D.   Except as provided  otherwise in Section 8.9, the General Partner,  in
          its sole and  absolute  discretion  and  without  the  approval of the
          Limited Partners, may propose and adopt, on behalf of the Partnership,
          Employee  Benefit Plans funded by the  Partnership  for the benefit of
          employees of the General Partner, the Partnership, Subsidiaries of the
          Partnership  or any  Affiliate  of any of them in respect of  services
          performed, directly or indirectly, for the benefit of the Partnership,
          the General Partner, or any Subsidiaries of the Partnership.

     E.   The General Partner is expressly authorized to enter into, in the name
          and on behalf of the  Partnership,  a "right of first  opportunity" or
          "right of first offer"  arrangement,  non-competition  agreements  and
          other conflict  avoidance  agreements  with various  Affiliates of the
          Partnership  and the  General  Partner,  on such terms as the  General
          Partner, in its sole and absolute discretion, believes are advisable.

      7.6  INDEMNIFICATION.

     A.   To the fullest extent permitted by Delaware law, the Partnership shall
          indemnify each Indemnitee from and against any and all losses, claims,
          damages, liabilities,  joint or several, expenses (including,  without
          limitation,  reasonable  attorneys'  fees  and  other  legal  fees and
          expenses),  judgments,  fines, settlements,  and other amounts arising
          from any and all  claims,  demands,  actions,  suits  or  proceedings,
          civil, criminal,  administrative or investigative,  that relate to the
          operations  of the  Partnership  or the  Company  as set forth in this
          Agreement,  in which such Indemnitee may be involved, or is threatened
          to be involved,  as a party or  otherwise,  except to the extent it is
          finally determined by a court of competent jurisdiction, from which no
          further appeal may be taken, that such Indemnitee's action constituted
          intentional  acts or  omissions  constituting  willful  misconduct  or
          fraud. Without limitation, the foregoing indemnity shall extend to any
          liability of any Indemnitee,  pursuant to a loan guaranty or otherwise
          for any  indebtedness  of the  Partnership  or any  Subsidiary  of the
          Partnership (including, without limitation, any indebtedness which the
          Partnership or any Subsidiary of the  Partnership has assumed or taken
          subject  to),  except with respect to  Partnership  debt

                                      -23-
<PAGE>


          that has been assumed or  guaranteed  by an Indemnitee in its capacity
          as a Limited  Partner.  The General  Partner is hereby  authorized and
          empowered,  on behalf of the  Partnership,  to enter  into one or more
          indemnity  agreements  consistent  with the provisions of this Section
          7.6 in favor of any Indemnitee having or potentially  having liability
          for  any  such  indebtedness.  Any  indemnification  pursuant  to this
          Section  7.6 shall be made only out of the assets of the  Partnership,
          and neither the General Partner nor any Limited Partner shall have any
          obligation  to  contribute  to  the  capital  of the  Partnership,  or
          otherwise  provide  funds,  to  enable  the  Partnership  to fund  its
          obligations under this Section 7.6.

     B.   Reasonable  expenses  incurred  by an  Indemnitee  who is a party to a
          proceeding  shall be paid or reimbursed by the  Partnership in advance
          of the final disposition of the proceeding.

     C.   The indemnification  provided by this Section 7.6 shall be in addition
          to any other rights to which an  Indemnitee or any other Person may be
          entitled  under any  agreement,  pursuant to any vote of the Partners,
          under the Company's Articles of Incorporation,  as a matter of law, or
          otherwise,  and shall  continue as to an Indemnitee  who has ceased to
          serve  in  such  capacity  unless  otherwise  provided  in  a  written
          agreement pursuant to which such Indemnities are indemnified.

     D.   The  Partnership  may,  but shall not be  obligated  to,  purchase and
          maintain  insurance,  on  behalf  of the  Indemnities  and such  other
          Persons as the General Partner shall determine,  against any liability
          that may be asserted  against or expenses that may be incurred by such
          Person in connection with the Partnership's activities,  regardless of
          whether the Partnership  would have the power to indemnify such Person
          against such liability under the provisions of this Agreement.

     E.   For purposes of this Section 7.6, the  Partnership  shall be deemed to
          have  requested  an  Indemnitee  to serve as  fiduciary of an Employee
          Benefit Plan whenever the performance by such Indemnitee of its duties
          to the  Partnership  also  imposes  duties on, or  otherwise  involves
          services  by,  such   Indemnitee  to  the  plan  or   participants  or
          beneficiaries of the plan; excise taxes assessed on an Indemnitee with
          respect to an Employee  Benefit Pan pursuant to  applicable  law shall
          constitute  fines  within the meaning of this Section 7.6; and actions
          taken or omitted by the Indemnitee with respect to an Employee Benefit
          Plan  in  the  performance  of its  duties  for a  purpose  reasonably
          believed  by  it  to  be  in  the  interest  of  the  participant  and
          beneficiaries of the plan shall be deemed to be for a purpose which is
          not opposed to the best interests of the Partnership.

     F.   In no event may an Indemnitee  subject any of the Limited  Partners to
          personal  liability by reason of the  indemnification  provisions  set
          forth in this Agreement.

     G.   An Indemnitee shall not be denied  indemnification in whole or in part
          under this Section 7.6 because the  Indemnitee  had an interest in the
          transaction with 

                                      -24-
<PAGE>


          respect to which the  indemnification  applies if the  transaction was
          otherwise permitted by the terms of this Agreement.

     H.   The  provisions  of  this  Section  7.6 are  for  the  benefit  of the
          Indemnitees,  their heirs, successors,  assigns and administrators and
          shall not be deemed to create any rights for the  benefit of any other
          Persons. Any amendment,  modification or repeal of this Section 7.6 or
          any provision  hereof shall be  prospective  only and shall not in any
          way affect the  Partnership's  liability to any Indemnitee  under this
          Section  7.6,  as in  effect  immediately  prior  to  such  amendment,
          modification,  or  repeal  with  respect  to  claims  arising  from or
          relating  to  matters  occurring,  in whole or in part,  prior to such
          amendment,  modification or repeal, regardless of when such claims may
          arise or be asserted.

     I.   The  provisions  of this  Section  7.6  shall be  inapplicable  to any
          investigation,  claim,  suit, or proceeding,  or the portion  thereof,
          which concerns  claims for breach of contract  between the Partnership
          and a Person  contracting  other than in such  Person's  capacity as a
          Partner, or as an officer or director of the General Partner.

     J.   No provision of this Section 7.6 shall be construed as permitting  any
          contract or  transaction  which is  prohibited  by the  provisions  of
          Section 9.2(b) of the Acquisition Agreement.

      7.7  LIABILITY OF THE GENERAL PARTNER.

     A.   Notwithstanding  anything to the contrary set forth in this Agreement,
          the General Partner and its officers and directors shall not be liable
          for monetary damages to the Partnership, any Partners or any Assignees
          for losses sustained or liabilities  incurred as a result of errors in
          judgment or of any act or omission,  if the General  Partner  acted in
          good faith;  provided,  however,  the foregoing shall not be deemed to
          exculpate  the Company from any  liability  the Company may have under
          the Acquisition Agreement.

     B.   Subject to its  obligations and duties as General Partner set forth in
          Section  7.1A  hereof,  the General  Partner may  exercise  any of the
          powers  granted to it by this  Agreement and perform any of the duties
          imposed upon it hereunder  either directly or by or through its agent.
          The General  Partner  shall not be liable for any acts or omissions on
          the part of any such  agent,  except  in  circumstances  for which the
          General  Partner  may be  liable  under  Section  7.7A or would not be
          subject to indemnification under Section 7.6.

     C.   Any  amendment,  modification  or  repeal of this  Section  7.7 or any
          provision  hereof shall be  prospective  only and shall not in any way
          affect the limitations on the General  Partner's and its officers' and
          directors' liability to the Partnership and the Limited Partners under
          this  Section 7.7 as in effect  immediately  prior to such  amendment,
          modification or repeal with respect to claims arising from or relating
          to

                                      -25-
<PAGE>

          matters  occurring,  in  whole or in  part,  prior to such  amendment,
          modification or repeal, regardless of when such claims may arise or be
          asserted.

                                      -26-
<PAGE>

      7.8 LIMITED  PARTNERS'  RIGHT TO BRING  DERIVATIVE  LAWSUITS.  Any Limited
Partner may bring an action on behalf of the Partnership, as permitted under the
Act and the laws of the State of Delaware, to recover a judgment in favor of the
Partnership  if the  General  Partner  has  refused to bring the action or if an
effort to cause  the  General  Partner  to bring  the  action  is not  likely to
succeed.

      7.9  OTHER MATTERS CONCERNING THE GENERAL PARTNER.

     A.   The General  Partner  may rely and shall be  protected  in acting,  or
          refraining from acting, upon any resolution,  certificate,  statement,
          instrument,  opinion,  report, notice, request,  consent, order, bond,
          debenture,  or other paper or document believed by it in good faith to
          be genuine and to have been signed or presented by the proper party or
          parties.

     B.   The  General  Partner  may consult  with legal  counsel,  accountants,
          appraisers,  management consultants,  investment bankers,  architects,
          engineers,   environmental   consultants  and  other  consultants  and
          advisers  selected  by it, and any act taken or omitted to be taken in
          reliance  upon the  opinion of such  Persons as to matters  which such
          General  Partner  reasonably  believes  to  be  within  such  Person's
          professional or expert  competence  shall be conclusively  presumed to
          have been done or omitted in good  faith and in  accordance  with such
          opinion.

     C.   The  General  Partner  shall have the right,  in respect of any of its
          powers  or  obligations  hereunder,  to act  through  any of its  duly
          authorized  officers and duly appointed  attorneys-in-fact.  Each such
          attorney  shall,  to the extent provided by the General Partner in the
          power of attorney, have full power and authority to do and perform all
          and every act and duty which is  permitted  or  required to be done by
          the General Partner hereunder.

     D.   Notwithstanding any other provisions of this Agreement or the Act, any
          action of the  General  Partner  on behalf of the  Partnership  or any
          decision  of the General  Partner to refrain  from acting on behalf of
          the Partnership,  undertaken in the good faith belief that such action
          or  omission is  necessary  or  advisable  in order (i) to protect the
          ability of the Company to  continue  to qualify as a REIT;  or (ii) to
          avoid the Company  incurring  any taxes  under  Section 857 or Section
          4981 of the Code, is expressly  authorized under this Agreement and is
          deemed approved by all of the Limited Partners.

      7.10 TITLE TO PARTNERSHIP  ASSETS.  Title to Partnership  assets,  whether
real,  personal or mixed and whether tangible or intangible,  shall be deemed to
be owned by the  Partnership  as an  entity,  and no  Partner,  individually  or
collectively,  shall have any ownership  interest in such Partnership  assets or
any portion thereof.  Title to any or all of the Partnership  assets may be held
in the name of the Partnership,  the General Partner or one or more nominees, as
the General Partner may determine,  including Affiliates of the General Partner.
The General Partner hereby declares and warrants that any Partnership  asset for
which legal  title is held in the name of the General  Partner or any nominee or
Affiliate of the General  Partner  shall be held by the General  

                                      -27-
<PAGE>

Partner  for  theuse and  benefit  of the  Partnership  in  accordance  with the
provisions of this Agreement;  provided,  that the General Partner shall use its
best efforts to cause beneficial and record title to such assets to be vested in
the Partnership as soon as reasonably practicable.  All Partnership assets shall
be  recorded  as the  property  of the  Partnership  in its books  and  records,
irrespective  of the name in which  legal  title to such  Partnership  assets is
held.

      7.11 RELIANCE BY THIRD PARTIES.  Notwithstanding  anything to the contrary
in this Agreement,  any Person dealing with the Partnership shall be entitled to
assume that the General Partner has full power and authority, without consent or
approval of any other Partner or Person,  to encumber,  sell or otherwise use in
any manner any and all assets of the Partnership and to enter into any contracts
on  behalf of the  Partnership,  and take any and all  actions  on behalf of the
Partnership,  and such Person shall be entitled to deal with the General Partner
as if the General Partner were the  Partnership's  sole party in interest,  both
legally  and  beneficially.  Each  Limited  Partner  hereby  waives  any and all
defenses  or other  remedies  which  may be  available  against  such  Person to
contest,  negate or disaffirm  any action of the General  Partner in  connection
with any such  dealing.  In no event shall any Person  dealing  with the General
Partner or its  representatives be obligated to ascertain that the terms of this
Agreement have been complied with or to inquire into the necessity or expedience
of any act or action of the  General  Partner or its  representatives.  Each and
every  certificate,  document  or other  instrument  executed  on  behalf of the
Partnership by the General  Partner or its  representatives  shall be conclusive
evidence in favor of any and every Person relying thereon or claiming thereunder
that:  (i) at the  time of the  execution  and  delivery  of  such  certificate,
document or instrument,  this  Agreement was in full force and effect;  (ii) the
Person  executing and delivering  such  certificate,  document or instrument was
duly authorized and empowered to do so for and on behalf of the Partnership; and
(iii) such  certificate,  document or instrument was duly executed and delivered
in accordance  with the terms and  provisions  of this  Agreement and is binding
upon the Partnership.

ARTICLE 8. RIGHTS AND OBLIGATIONS OF LIMITED PARTNERS.

      8.1 LIMITATION OF LIABILITY.  The Limited Partners shall have no liability
under this Agreement except as expressly  provided in this Agreement,  including
Sections 10.5 and 13.3 hereof, or under the Act.  Notwithstanding  the preceding
sentence, each Limited Partner shall have the right, but not the obligation,  to
guarantee a portion of the  indebtedness  of the  Partnership in accordance with
the terms of the Acquisition Agreement.

      8.2 MANAGEMENT OF BUSINESS. No Limited Partner or Assignee (other than the
General Partner, any of its Affiliates or any officer, director, employee, agent
or trustee of the General Partner,  the Partnership or any of their  Affiliates,
in their  capacity  as such)  shall take part in the  operation,  management  or
control (within the meaning of the Act) of the Partnership's business,  transact
any business in the  Partnership's  name or have the power to sign documents for
or otherwise bind the  Partnership. The  

                                      -28-

<PAGE>

transaction of any such business by the General  Partner,  any of its Affiliates
or any officer,  director,  employee,  partner,  agent or trustee of the General
Partner, the Partnership or any of their Affiliates,  in their capacity as such,
shall not affect,  impair or eliminate the  limitations  on the liability of the
Limited Partners or Assignees under this Agreement.

      8.3 OUTSIDE  ACTIVITIES  OF LIMITED  PARTNERS.  Subject to any  agreements
entered  into  pursuant to Section 7.5 hereof and any other  agreements  entered
into by a Limited  Partner or its Affiliates  with the Partnership or any of its
Subsidiaries  including the  Acquisition  Agreement,  any Limited Partner (other
than the Company) and any officer, director, employee, agent, trustee, Affiliate
or shareholder of any Limited Partner (other than the Company) shall be entitled
to and may have business interests and engage in business activities in addition
to  those  relating  to  the  Partnership,   including  business  interests  and
activities  that are in  direct  competition  with the  Partnership  or that are
enhanced by the activities of the  Partnership.  Neither the Partnership nor any
Partners  shall  have any  rights by virtue of this  Agreement  in any  business
ventures of any Limited Partner or Assignee which are permitted within the scope
of this Section 8.3. None of the Limited  Partners  (other than the Company) nor
any other  Person  shall  have any  rights by  virtue of this  Agreement  or the
Partnership  relationship  established  hereby in any  business  ventures of any
other Person and such Person shall have no obligation pursuant to this Agreement
to offer any  interest in any such  business  ventures to the  Partnership,  any
Limited  Partner  or any such other  Person,  even if such  opportunity  is of a
character  which, if presented to the  Partnership,  any Limited Partner or such
other Person, could be taken by such Person.

      8.4 RETURN OF CAPITAL.  Except in connection with the exercise of Exchange
Rights or Put Rights,  no Limited Partner shall be entitled to the withdrawal or
return of its Capital  Contribution,  except to the extent of distributions made
pursuant to this Agreement or upon  termination  of the  Partnership as provided
herein.  Except to the extent provided by Appendix II, or as otherwise expressly
provided in this  Agreement,  no Limited Partner or Assignee shall have priority
over any other Limited  Partner or Assignee,  either as to the return of Capital
Contributions or as to profits, losses or distributions.

      8.5  RIGHTS OF LIMITED PARTNERS RELATING TO THE PARTNERSHIP.

     A.   In addition to the other rights  provided by this  Agreement or by the
          Act,  and  except as  limited by Section  8.5B  hereof,  each  Limited
          Partner shall have the right, for a purpose reasonably related to such
          Limited  Partner's  interest as a limited partner in the  Partnership,
          upon written demand with a statement of the purpose of such demand and
          at such  Limited  Partner' s own expense  (including  such  reasonable
          copying  and  administrative   charges  as  the  General  Partner  may
          establish from time to time):  (i) to obtain a copy of the most recent
          annual  and  quarterly  reports  filed  by the  Company  with  the SEC
          pursuant  to  the  Exchange   Act;  (ii)  to  obtain  a  copy  of  the
          Partnership's  federal,  state and local  income tax  returns for each
          Partnership  Year; (iii) to obtain a current list of the name and last
          known business,  residence or mailing 

                                        -29-
<PAGE>


          address of each Partner;  (iv) to obtain a copy of this  Agreement and
          the  Certificate  and  all  amendments  and/or  restatements  thereto,
          together  with executed  copies of all powers of attorney  pursuant to
          which  this  Agreement,  the  Certificate  and all  amendments  and/or
          restatements  thereto have been  executed;  and (v) to obtain true and
          full  information  regarding the amount of cash and a description  and
          statement  of any  other  property  or  services  contributed  by each
          Partner and which each Partner has agreed to contribute in the future,
          and the date on which each became a Partner.

     B.   Notwithstanding  any other  provision of this Section 8.5, the General
          Partner  may keep  confidential  from the Limited  Partners,  for such
          period  of time as the  General  Partner  determines  in its  sole and
          absolute  discretion to be reasonable,  any  information  that (i) the
          General  Partner  reasonably  believes  to be in the  nature  of trade
          secrets or other confidential information, the disclosure of which the
          General Partner in good faith believes is not in the best interests of
          the  Partnership or the Company or could damage the Partnership or its
          business;  or (ii) the Partnership is required by law or by agreements
          with an unaffiliated third party to keep confidential.

      8.6 EXCHANGE RIGHTS. The Limited Partners may exchange all or a portion of
their  L.P.  Units for  shares of Common  Stock on the terms and  subject to the
conditions and restrictions contained in the Exchange Rights Agreement.

      8.7  PUT RIGHTS.

     A.   Upon the terms and subject to the conditions of this  Agreement,  each
          Limited  Partner  (other  than  Carl E.  Berg and  Clyde J.  Berg with
          respect  to all  L.P.  Units  owned  by  them  beneficially  as of the
          Effective  Date)  shall  have the right to  tender to the  Partnership
          outstanding  L.P.  Units no more than once during any 12-month  period
          commencing  after  December 29, 1999. The  Partnership  shall purchase
          properly  tendered L.P. Units for cash at a price (the "Tender Price")
          equal to the average  market value of the Common Stock price as of the
          date the  Limited  Partner  delivers to the  General  Partner,  at the
          address  provided in Appendix II, a completed and duly executed Letter
          of  Transmittal  in the form  attached  as  Exhibit A to the  Exchange
          Rights  Agreement,  and any other documents  required by the Letter of
          Transmittal.  Only a tender in this  manner  will  constitute  a valid
          tender of L.P.  Units  pursuant  to this  Section  8.7A.  The  General
          Partner shall make all  determinations  as to the validity and form of
          any tender of L.P.  Units in  accordance  with the  provisions of this
          Agreement,  and upon  rejection of a tender,  shall give the tendering
          holder  written  notice of such  rejection,  which  shall  include the
          reasons therefor. Unless otherwise agreed by the General Partner or as
          provided  in Section  8.7C,  tenders of L.P.  Units  pursuant  to this
          Section  8.7A  shall  be  irrevocable  and  shall  not be  subject  to
          withdrawal or modification.

     B.   Within 15 days  after  the valid  tender  of L.P.  Units  pursuant  to
          Section  8.7A,  the Company may make an election to purchase such L.P.
          Units itself with cash of the Company (the "Cash  Election").  If with
          respect to any tender of L.P.  Units pursuant to this Section 8.7, the
          Company makes the Cash Election, then within 90 days after such tender
          the Company  shall pay to the tendering  Limited  Partner an aggregate
          amount of cash equal to the purchase  price of the tendered L.P. Units
          with available cash,

                                      -30-
<PAGE>


          borrowed  funds or the proceeds of an offering of new shares of Common
          Stock.  Upon  acquiring  the L.P.  Units,  the  Company  may cause the
          Partnership  to retire  the L.P.  Units and  convert  them to the same
          number of Units of General Partner  Interest,  and the General Partner
          shall amend Appendix I accordingly.

     C.   Notwithstanding  the  foregoing,  if the  purchase  price for the L.P.
          Units tendered by a Limited  Partners in one year exceeds  $1,000,000,
          the   Partnership   or  the  Company   shall  be  entitled  to  reduce
          proportionally  the  number  of L.P.  Units to be  acquired  from each
          Tendering  Partner  so that the total  purchase  price does not exceed
          $1,000,000 if the Company so elects. In addition,  if the Company does
          not timely make the Cash Election,  the Partnership  shall deliver the
          purchase  price for the  tendered  L.P.  Units to the Limited  Partner
          within 45 days after the Letter of  Transmittal  was  delivered to the
          General Partner. The General Partner may defer payment of the purchase
          price until such time not to exceed 120 days after the valid tender of
          L.P.  Units pursuant to Section 8.7A as the  Partnership  has adequate
          Available Cash after payment of the purchase  price, in the reasonable
          judgment  of  the  General  Partner,  to  fund  current  distributions
          necessary for the Company to satisfy the REIT  Requirements  following
          the waiver by the Company of its right to make the Cash  Election.  In
          such  event,  the General  Partner  shall give the  tendering  Limited
          Partner  written  notice of its  decision to defer the payment  with a
          calculation  supporting the General Partner's  determination within 20
          days after the Letter of  Transmittal  was  delivered  to the  General
          Partner.  Upon receiving such notice, the Limited Partner may withdraw
          the tender. In addition,  the Limited Partner may instead exercise its
          rights  under the  Exchange  Rights  Agreement.  If a Limited  Partner
          tenders L.P. Units  pursuant to this Section 8.7, the Limited  Partner
          shall pay the amount of any additional  documentary,  stamp or similar
          issue or transfer tax which is due, and shall be  responsible  for all
          income or other taxes as a result of such exchange.

     D.   Each  tender of L.P.  Units  shall  constitute  a  representation  and
          warranty   by  the   tendering   Limited   Partner   of  each  of  the
          representations  and  warranties  set  forth in the form of  Letter of
          Transmittal.

     E.   Until the holder of L.P.  Units  tendered  pursuant to Section 8.7 has
          received  cash  in  exchange  therefor,  such  Limited  Partner  shall
          continue  to hold and own such  L.P.  Units for all  purposes  of this
          Agreement.

                                      -31-
<PAGE>

      8.8  NEW EQUITY FINANCING RIGHTS.

     A.   If the General Partner  determines that it is in the best interests of
          the  Partnership  to obtain  additional  funds through the issuance of
          additional  Partnership  Interests,  the General  Partner  shall first
          offer to the Limited Partners in each of the  partnerships  comprising
          the Operating  Partnership,  including the  Partnership,  the right of
          first refusal to purchase that portion of such additional  Partnership
          Interests  which their  respective  numbers of L.P.  Units bear to the
          total number of outstanding  L.P. Units in the Operating  Partnership.
          The General Partner shall make this offer pursuant to a written notice
          describing  the  offering  price,   class  or  series  of  Partnership
          Interest, and all other material terms of the offer. Such notice shall
          be sent to each Limited  Partner at the address  reflected in Appendix
          I, as amended.  The Limited  Partners shall have 10 days from the date
          of such notice to elect to purchase  any such  additional  Partnership
          Interests.   Such  election  shall  be  made  pursuant  to  a  written
          subscription form specifying the number of Units of additional Limited
          Partnership  Interests the Limited  Partner intends to acquire and the
          total  purchase  price  therefor,  and shall be signed by the  Limited
          Partner and delivered to the General  Partner at the address set forth
          on Appendix I. After such 10-day period,  the General Partner shall be
          free  to  offer  any  additional  Limited  Partnership   Interests  on
          substantially similar terms to non-Partners and Partners alike.

     B.   The  foregoing  right of the Limited  Partners  to acquire  additional
          equity  interests  offered by the Partnership  ("New Equity  Financing
          Right")  shall  not  apply  to any  offering  (i)  which  is part of a
          transaction in which the Limited  Partners had the ability to exercise
          their New Equity Financing Rights under the Acquisition Agreement with
          respect to an offering of Equity  Securities  by the Company,  (ii) in
          connection  with a merger or other  business  combination  subject  to
          approval by the L.P. Unit Majority pursuant to Section 8.9, (iii) to a
          Person in connection  with the  acquisition of property or services by
          the Partnership from such Person, or (iv) of any Partnership  Interest
          upon conversion of an outstanding  Equity Security of the Partnership,
          any Partnership Subsidiary, or the Company.

      8.9  MATTERS REQUIRING L.P. UNIT MAJORITY APPROVAL.

      The consent of the L.P. Unit Majority will be required with respect to the
following  actions  involving  the  Partnership:  (i)  the  material  amendment,
modification or termination of the Agreement;  (ii) a general assignment for the
benefit of creditors or the appointment of a custodian,  receiver or trustee for
any of the assets of the  Partnership;  (iii) the  institution of any proceeding
for bankruptcy of the Partnership;  (iv) the Transfer of any General Partnership
Interests,  including  transfers  attendant  to  any  merger,  consolidation  or
liquidation  of the  Company  except as  otherwise  provided  in 11.2C;  (v) the
admission of any additional or substitute  General  Partner in the  Partnership;
and (vi) a Change of Control  Transaction.  In  addition,  until the  Protective
Provisions  Expiration  Date, the consent of the L.P. Unit Majority will also be
required  with respect to: (i) any  Terminating  Capital  Transaction;  (ii) the
dissolution  and  liquidation of the  Partnership;  and (iii) the  Partnership's
issuance of Limited Partner

                                      -32-
<PAGE>

Interests  having  seniority  over the L.P.  Units with respect to  distributing
assets, and voting rights.

      8.10  APPROVAL OF CERTAIN  TAXABLE  SALES.  Until the earlier of the tenth
anniversary of the closing of the Berg Acquisition and the Protective Provisions
Expiration  Date, the General  Partner must obtain the prior written  consent of
Carl E. Berg,  and upon Carl  Berg's  death if prior to the  expiration  of this
provision,  Clyde J. Berg, before effecting any sale or other transfer of any of
the Properties identified on Schedules 1, 2, 3 or 5 to the Acquisition Agreement
on behalf of the Partnership  which results in the recognition of taxable income
by any member of the Berg Group  under the Code.  Until the earlier of the tenth
anniversary of the Berg  Acquisition  and the date on which John T.  Kontrabecki
ceases to  beneficially  own at least 750,000 L.P.  Units,  the General  Partner
shall obtain his prior  written  consent  prior to  effecting  any sale or other
transfer  of  any of  the  Properties  (identified  in  Schedules  4 or 5 to the
Acquisition  Agreement)  as owned by  Kontrabecki,  Triangle  Partners,  or Berg
Ventures  II,  which  will  result  in the  recognition  of  taxable  income  by
Kontrabecki under the Code.

ARTICLE 9. BOOKS, RECORDS, ACCOUNTING AND REPORTS.

      9.1  RECORDS AND ACCOUNTING.

      The General Partner shall keep or cause to be kept at the principal office
of the Partnership those records and documents  required to be maintained by the
Act and other books and records deemed by the General  Partner to be appropriate
with respect to the Partnership's business,  including,  without limitation, all
books and records  necessary to comply with applicable REIT  Requirements and to
provide to the Limited Partners any  information,  lists and copies of documents
required to be provided  pursuant to Sections  8.5A and 9.3 hereof.  Any records
maintained  by or on  behalf of the  Partnership  in the  regular  course of its
business  may be kept on,  or be in the form of,  punch  cards,  magnetic  tape,
photographs,  micrographics or any other  information  storage device,  provided
that the records so maintained are convertible into clearly legible written form
within a  reasonable  period  of time.  The  books of the  Partnership  shall be
maintained, for financial and tax reporting purposes, on an accrual basis in

                                      -33-
<PAGE>


      accordance  with  GAAP,  or  such  other  basis  as  the  General  Partner
determines to be necessary or appropriate.

      9.2  FISCAL YEAR.  The fiscal year of the Partnership shall be the
calendar year.

ARTICLE 10.     TAX MATTERS.

      10.1 PREPARATION OF TAX RETURNS. The General Partner shall arrange for the
preparation and timely filing of all  Partnership  returns for federal and state
income tax  purposes  and shall use all  reasonable  efforts to furnish,  within
sixty  (60)  days  of the  close  of each  taxable  year,  the  tax  information
reasonably  required by Limited  Partners for their federal and state income tax
reporting purposes.

      10.2 TAX ELECTIONS. The General Partner shall elect for the Partnership to
be considered a limited  partnership on all applicable  federal and state income
tax returns to be filed by the Partnership. Except as otherwise provided herein,
the  General  Partner  shall,  in its sole and  absolute  discretion,  determine
whether  to  make  any  other   available   election   pursuant   to  the  Code.
Notwithstanding  the above,  in making any such tax election the General Partner
shall take into account the tax consequences to the Limited  Partners  resulting
from any such  election.  The General  Partner  shall make such tax elections on
behalf of the Partnership as the L.P. Unit Majority  request,  provided that the
General  Partner  believes that such election is not adverse to the interests of
the General Partner, including its interest in preserving its qualification as a
REIT  under  the  Code.  In  addition,  the  General  Partner  shall  elect  the
"traditional   method"  of  making  Section  704(c)   allocations   pursuant  to
Regulations  Section 1.704-3 with respect to each Property under the Acquisition
Agreement.  The General  Partner  shall have the right to seek to revoke any tax
election it makes  (other than the  election  to use the  traditional  method of
making  the  Section  704(c)  allocations   described  in  this  Section  10.2),
including,  without limitation, the election under Section 754 of the Code, upon
the General Partner' s determination,  in its sole and absolute discretion, that
such  revocation  is in the best  interests of the Limited  Partners  taken as a
whole and with the  approval  of the L.P.  Unit  Majority  until the  Protective
Provisions Expiration Date. All such elections and determinations may be made on
a  Property-by-Property  basis,  and the  General  Partner  shall be required to
analyze the impact of all such elections and determinations on that basis.

      10.3 TAX MATTERS PARTNER.

      A.  The  General  Partner  shall  be  the  "tax  matters  partner"  of the
Partnership for federal income tax purposes.  Pursuant to Section 6230(e) of the
Code, upon receipt of notice from the Internal  Revenue Service of the beginning
of an administrative proceeding with respect to the Partnership, the tax matters
partner  shall  furnish the Internal  Revenue  Service  with the name,  address,
taxpayer  identification  number, and Percentage Interest of each of the Limited
Partners and the Assignees;  provided,  that such information is provided to the
Partnership by the Limited Partners and the Assignees.


                                      -34-
<PAGE>


      B. The tax matters partner is authorized, but not required:

          (1)  to enter into any settlement  with the Internal  Revenue  Service
               with respect to any  administrative  or judicial  proceedings for
               the  adjustment of  Partnership  items  required to be taken into
               account by a Partner for income tax purposes (such administrative
               proceedings  being referred to as a "tax audit" and such judicial
               proceedings being referred to as "judicial  review"),  and in the
               settlement  agreement the tax matters partner may expressly state
               that such  agreement  shall bind all  Partners,  except that such
               settlement  agreement  shall not bind any Partner (i) who (within
               the time prescribed pursuant to the Code and Regulations) files a
               statement with the Internal  Revenue  Service  providing that the
               tax matters  partner shall not have the authority to enter into a
               settlement  agreement on behalf of such Partner; or (ii) who is a
               "notice  partner" (as defined in Section  6231(a)(8) of the Code)
               or a member of a "notice group" (as defined in Section 6223(b)(2)
               of the Code);

          (2)  in the event that a notice of a final  administrative  adjustment
               at the  Partnership  level of any item  required to be taken into
               account by a Partner for tax purposes (a "final  adjustment")  is
               mailed to the tax matters  partner,  to seek  judicial  review of
               such final  adjustment,  including  the filing of a petition  for
               readjustment  with the Tax Court or the filing of a complaint for
               refund with the United States Claims Court or the District  Court
               of the United States for the district in which the  Partnership's
               principal place of business is located;

          (3)  to  intervene  in any  action  brought by any other  Partner  for
               judicial review of a final adjustment;

          (4)  to file a  request  for an  administrative  adjustment  with  the
               Internal  Revenue Service and, if any part of such request is not
               allowed by the Internal Revenue  Service,  to file an appropriate
               pleading (petition or complaint) for judicial review with respect
               to such request;

          (5)  to enter into an agreement with the Internal  Revenue  Service to
               extend the period for assessing any tax which is  attributable to
               any item  required  to be taken  account of by a Partner  for tax
               purposes, or an item affected by such item; and

          (6)  to take  any  other  action  on  behalf  of the  Partners  or the
               Partnership in connection  with any tax audit or judicial  review
               proceeding  to  the  extent   permitted  by  applicable   law  or
               regulations.

          The taking of any action and the  incurring  of any expense by the tax
          matters partner in connection with any such proceeding,  except to the
          extent  required  by  law,  is a  matter  in  the  sole  and  absolute
          discretion of the tax matters  partner and the provisions  relating to
          indemnification  of the  General  Partner  set forth in 

                                      -35-
<PAGE>

          Section 7.6 of this  Agreement  shall be fully  applicable  to the tax
          matters partner in its capacity as such.

     C.   The  tax  matters  partner  shall  receive  no  compensation  for  its
          services.  All third  party  costs and  expenses  incurred  by the tax
          matters partner in performing its duties as such (including  legal and
          accounting  fees and  expenses)  shall  be  borne by the  Partnership.
          Nothing  herein shall be construed  to restrict the  Partnership  from
          engaging  an  accounting  firm to assist  the tax  matters  partner in
          discharging its duties hereunder,  so long as the compensation paid by
          the Partnership for such services is reasonable.

      10.4  ORGANIZATIONAL  EXPENSES.  The  Partnership  shall  elect to  deduct
expenses,  if any,  incurred by it in organizing the Partnership  ratably over a
60-month period as provided in Section 709 of the Code.

      10.5  WITHHOLDING.  Each Limited Partner hereby authorizes the Partnership
to withhold  from, or pay on behalf of or with respect to, such Limited  Partner
any amount of federal,  state,  local, or foreign taxes that the General Partner
determines  that the  Partnership is required to withhold or pay with respect to
any amount  distributable  or allocable to such Limited Partner pursuant to this
Agreement,  including,  without limitation, any taxes required to be withheld or
paid by the Partnership  pursuant to Sections 1441,  1442,  1445, or 1446 of the
Code.  Any amount paid on behalf of or with respect to a Limited  Partner  shall
constitute a loan by the Partnership to such Limited  Partner,  which loan shall
be repaid by such Limited  Partner  within 15 days after notice from the General
Partner that such payment must be made unless (i) the Partnership withholds such
payment  from a  distribution  which  would  otherwise  be made  to the  Limited
Partner;  or (ii) the  General  Partner  determines,  in its  sole and  absolute
discretion,  that such payment may be  satisfied  out of the amount of Available
Cash which would,  but for such payment,  be distributed to the Limited Partner.
Any  amounts  withheld  pursuant to the  foregoing  clauses (i) or (ii) shall be
treated as having been distributed to such Limited Partner. Each Limited Partner
hereby  unconditionally  and  irrevocably  grants to the  Partnership a security
interest in such Limited Partner' s Partnership  Interest to secure such Limited
Partner's  obligation to pay to the Partnership any amounts  required to be paid
pursuant to this Section 10.5. In the event that a Limited  Partner fails to pay
when due any amounts owed to the Partnership  pursuant to this Section 10.5, the
General  Partner  may, in its sole and  absolute  discretion,  elect to make the
payment to the Partnership on behalf of such defaulting Limited Partner,  and in
such event shall be deemed to have loaned such amount to such defaulting Limited
Partner  and shall  succeed to all rights and  remedies  of the  Partnership  as
against such defaulting Limited Partner. Without limitation,  in such event, the
General  Partner  shall  have the  right to  receive  distributions  that  would
otherwise be distributable to such defaulting Limited Partner until such time as
such loan,  together with all interest  thereon,  has been paid in full, and any
such distributions so received by the General Partner shall be treated as having
been  distributed to the defaulting  Limited Partner and immediately paid by the
defaulting Limited Partner to the General Partner in repayment of such loan. Any
amount payable by a Limited Partner

                                      -36-
<PAGE>

hereunder  shall bear  interest  at the  highest  base or prime rate of interest
published from time to time by any of Wells Fargo Bank,  N.A., plus 4 percentage
points,  but in no event higher than the maximum lawful rate of interest on such
obligation,  such interest to accrue from the date such amount is due (i.e.,  15
days after demand) until such amount is paid in full. Each Limited Partner shall
take such actions as the  Partnership  or the General  Partner  shall request in
order to perfect or enforce the security interest created hereunder.

ARTICLE 11.     TRANSFERS AND WITHDRAWALS.

      11.1 TRANSFER.

     A.   The term  "Transfer,"  when used in this  Article 11 with respect to a
          Unit,  shall be deemed to refer to a transaction  by which the General
          Partner  purports  to assign  all or any part of its  General  Partner
          Interest to another Person or by which a Limited  Partner  purports to
          assign  all or any part of its  Limited  Partner  Interest  to another
          Person.  The term  "Transfer"  when used in this  Article  11 does not
          include any exchange of L.P. Units for shares of Common Stock pursuant
          to the Exchange Rights Agreement.

     B.   No  Partnership  Interest shall be  Transferred,  in whole or in part,
          except in accordance  with the terms and  conditions set forth in this
          Article  11. Any  Transfer  or  purported  Transfer  of a  Partnership
          Interest not made in accordance with this Article 11 shall be null and
          void.

      11.2 TRANSFER OF THE COMPANY'S PARTNERSHIP INTERESTS.

     A.   The General  Partner may not  withdraw as General  Partner or transfer
          its General Partner  Interest or Limited  Partner  Interest unless (i)
          the L.P.  Unit  Majority  (excluding  L.P.  Units held by the Company)
          consents to such Transfer or  withdrawal,  or (ii) such Transfer is to
          an entity which is wholly-owned by the Company and is a Qualified REIT
          Subsidiary under Section 856(i) of the Code.

     B.   In the event the  General  Partner  withdraws  as  General  Partner in
          accordance with Section 11.2A, the General  Partner's  General Partner
          Interest  shall  immediately  be  converted  into  a  Limited  Partner
          Interest.

      11.3 LIMITED PARTNERS' RIGHTS TO TRANSFER.

     A.   Subject to the  provisions  of this Section  11.3,  a Limited  Partner
          (other  than the  Company)  may,  without  the  consent of the General
          Partner:

          (a)  if such Limited  Partner is a partnership or a limited  liability
               company,  Transfer  such  Limited  Partner's  L.P.  Units  to any
               partner of such  Limited  Partner  or any member of such  limited
               liability company;

                                      -37-
<PAGE>


          (b)  Transfer such Limited  Partner's  L.P. Units to any other Limited
               Partner; and

          (c)  pledge  such  Limited  Partner's  L.P.  Units  to  any  financial
               institution as collateral for any loan with respect to which such
               Limited Partner is personally liable.

     B.   Subject to the provisions of this Section 11.3, a Limited  Partner may
          Transfer  any of such  Limited  Partner's  L.P.  Units,  other than in
          accordance with Section 11.3A,  only with the prior written consent of
          the General Partner which may be withheld in its sole discretion.

     C.   If  a  Limited  Partner  is  subject  to  Incapacity,   the  executor,
          administrator,  trustee, committee,  guardian, conservator or receiver
          of such  Limited  Partner's  estate  shall have all of the rights of a
          Limited  Partner,  but not more  rights  than  those  enjoyed by other
          Limited  Partners,  for the purpose of settling or managing the estate
          and such  power as the  Incapacitated  Limited  Partner  possessed  to
          Transfer  all or any part of his or its  interest in the  Partnership.
          The  Incapacity  of a Limited  Partner,  in and of  itself,  shall not
          dissolve or terminate the Partnership.

     D.   No Transfer by a Limited  Partner of its L.P. Units may be made to any
          Person if (i) in the opinion of legal counsel for the Partnership,  it
          would  result  in the  Partnership  being  treated  as an  association
          taxable  as  a  corporation;   (ii)  such  Transfer  would  cause  the
          Partnership  to become,  with  respect to any  Employee  Benefit  Plan
          subject  to Title I of ERISA,  a  "party-in-interest"  (as  defined in
          Section  3(14) of ERISA) or a  "disqualified  person"  (as  defined in
          Section  4975(c)  of the  Code);  (iii) such  Transfer  would,  in the
          opinion of legal counsel for the Partnership, cause any portion of the
          assets of the Partnership to constitute assets of any Employee Benefit
          Plan pursuant to Department of Labor Regulations  Section  2510.2-101;
          (iv) such Transfer would subject the  Partnership to regulation  under
          the Investment  Company Act of 1940,  the  Investment  Advisors Act of
          1940 or ERISA;  or (v) such  Transfer is a sale or exchange,  and such
          sale or  exchange  would,  when  aggregated  with all other  sales and
          exchanges  during  the  12-month  period  ending  on the  date  of the
          proposed Transfer, result in a Change of Control Transaction.

     E.   Subject to the  foregoing  provisions of Section 11.3 and the terms of
          Section  12.2,  a  Limited  Partner  may  transfer  L.P.  Units  to an
          Affiliate and have such Affiliate become a Limited Partner.

      In addition to the conditions set forth in Sections 11.3D,  11.4, and 12.2
any Transfer pursuant to this Article 11 is subject to the following conditions:

          (1) unless  such  Transfer  is being  made  pursuant  to an  effective
     registration statement under the Securities Act, or pursuant to Rule 144 or
     Rule 144A thereunder, the transferring Limited Partner shall deliver to the
     Company a notice with respect to the proposed  transfer,  together  with an
     opinion  of  counsel  in form and  substance  satisfactory  to the  General
     Partner prepared by counsel reasonably

                                      -38-
<PAGE>

     satisfactory  to  the  General   Partner  (which  shall  include,   without
     limitation, counsel to each of the Limited Partners as of the date hereof),
     to the effect that an exemption from registration and  qualification  under
     such Securities Act is available;

          (2) the  transferring  Limited  Partner and its transferee  shall each
     provide  a  certificate  to the  General  Partner,  in form  and  substance
     satisfactory  to the General  Partner,  to the effect that (i) the proposed
     transfer will not be effected on or through (a) a United  States  national,
     regional or local securities exchange, (b) a foreign securities exchange or
     (c) an interdealer quotation system that regularly disseminates firm buy or
     sell  quotations  by  identified  brokers  or dealers  (including,  without
     limitation,  the Nasdaq) by electronic  means or otherwise,  and (ii) it is
     not, and the proposed  transfer  will not be made by,  through or on behalf
     of, (a) a Person who regularly  quotes equity interests in the Partnership,
     such as a broker or  dealer  making a market  in  equity  interests  in the
     Partnership  or (b) a Person who  regularly  makes  available to the public
     (including  customers or  subscribers)  bid or offer quotes with respect to
     equity  interests in the Partnership and stands ready to effect buy or sell
     transactions  at the  quoted  prices  for  itself or on  behalf of  others;
     PROVIDED,  HOWEVER,  that such  certificate  shall not be required  for any
     transfer in connection with a registered public offering;

          (3) the  transferee  must be a United States Person for federal income
     tax purposes; and

          (4) such transfer must not cause the  Partnership to terminate or lose
     its status as a partnership for tax purposes.

     F.   If it shall  become  unlawful  for any Limited  Partner to continue to
          hold some or all of the L.P. Units held by such Limited Partner, or by
          reason of legal or  regulatory  restrictions  the cost to such Limited
          Partner to continue to hold such L.P.  Units (in relation to the value
          of such L.P.  Units to such Limited  Partner)  has, in the  reasonable
          judgment  of  such  Limited  Partner,  significantly  increased,  such
          Limited  Partner may, at any time  following  the date three  business
          days after the delivery by such Limited Partner to the General Partner
          a notice of the existence of any such restriction, Transfer all or any
          portion of the L.P.  Units held by such  Limited  Partner  free of any
          restrictions   imposed   under  this   Agreement   (other  than  those
          restrictions  required by federal or state laws, including securities,
          and tax, laws, and subject to the prospective  transferee  meeting the
          requirements of Section 12.2, and provided that the transferee Limited
          Partner shall hold its L.P.  Units subject to all of the terms of this
          Agreement);  but only if such Limited Partner cannot then exercise its
          Exchange  Rights or Put Rights for cash,  and the Company has notified
          the Limited  Partner  that the Company will not register for offer and
          sale all  shares of  Common  Stock  issued  upon the  exercise  of the
          Exchange Rights within 90 days. In connection  therewith,  the Company
          shall assist such Limited  Partner in disposing of the L.P. Units held
          by it in a prompt  and  orderly  manner,  and (at the  request of such
          Limited Partner) make available (and authorize such Limited Partner to
          make available  through the Company)  financial and other  information
          concerning  the  Company  and  its  Subsidiaries  (including,  without
          limitation,  the  information  described  in Rule  144A(d)(4))  to any
          prospective  purchaser  of

                                      -39-
<PAGE>


          such L.P. Units (it being agreed that such prospective purchaser shall
          be either an "accredited  investor" within the meaning of Rule 501 (a)
          under the Securities Act or a "qualified  institutional  buyer" within
          the meaning of Rule 144A(d)(1)  under such Act to the extent that such
          L.P. Units are "restricted securities" as such term is defined in Rule
          144).  The Company may require  that each such  prospective  purchaser
          keep confidential, pursuant to customary confidentiality requirements,
          any information received by it pursuant to this provision.

      11.4  SUBSTITUTED  LIMITED  PARTNERS.  The General  Partner shall have the
right to consent to the  admission  of a  transferee  who  receives  L.P.  Units
pursuant to Section  11.3A,  C, or E, which  consent may be given or withheld by
the General Partner in its sole and absolute  discretion.  The General Partner's
failure or refusal to permit such  transferee  to become a  Substituted  Limited
Partner shall not give rise to any cause of action  against the  Partnership  or
any Partner.

      11.5  ASSIGNEES.  If  the  General  Partner,  in  its  sole  and  absolute
discretion, does not consent to the admission of any transferee as a Substituted
Limited  Partner,  as  described  in  Section  11.4,  such  transferee  shall be
considered  an Assignee for  purposes of this  Agreement.  An Assignee  shall be
deemed  to  have  had   assigned  to  it,  and  shall  be  entitled  to  receive
distributions  from the Partnership and the share of Net Income,  Net Losses and
any other Tax Items with respect to the L.P. Units assigned to such  transferee,
but shall not be deemed to be a holder of L.P. Units for any other purpose under
this Agreement,  and shall not be entitled to vote such L.P. Units in any matter
presented to the Limited  Partners  for a vote (such L.P.  Units being deemed to
have been voted on such matter in the same  proportion  as all other L.P.  Units
held by Limited Partners are voted). In the event the Assignee desires to make a
further assignment of any such L.P. Units, such Assignee shall be subject to all
of the  provisions  of this Article 11 to the same extent and in the same manner
as any Limited Partner desiring to make an assignment of L.P. Units.

      11.6 EFFECT OF  PROHIBITED  TRANSFER.  Any  transfer  made in violation of
Article 11 shall be null and void and of no force and effect.

      11.7 GENERAL PROVISIONS.

     A.   No Limited Partner may withdraw from the  Partnership  other than as a
          result of a permitted  Transfer of all of such Limited Partner' s L.P.
          Units in accordance with this Article 11, or pursuant to the tender or
          exchange  of all of its L.P.  Units  pursuant  to the  exercise of Put
          Rights or Exchange Rights.

     B.   Any Limited  Partner  who shall  Transfer  all of its L.P.  Units in a
          Transfer  permitted  pursuant  to this  Article 11 shall cease to be a
          Limited Partner upon the admission of all Assignees of such L.P. Units
          as Substituted  Limited Partners.  Similarly,  any Limited Partner who
          shall  Transfer all of its L.P. Units pursuant to a tender or exchange
          of all of its L.P.  Units  pursuant  to the  exercise of Put Rights or
          Exchange Rights shall cease to be a Limited Partner.

                                      -40-

<PAGE>
     C.   Without  the  consent  of the  General  Partner,  permitted  Transfers
          pursuant to this Article 11 may be made effective only as of the first
          day of a Quarter.

     D.   If any Partnership Interest is transferred or assigned during the year
          in  compliance  with the  provisions  of this  Article 11, or redeemed
          pursuant to Section 8.7, or exchanged  pursuant to the Exchange Rights
          Agreement on any day other than the first day of a  Partnership  Year,
          the Net Income, Net Losses, each item thereof, and all other Tax Items
          attributable  to such  interest  for such  Partnership  Year  shall be
          divided  and  allocated   between  the  transferor   Partner  and  the
          transferee  Partner by taking into  account  their  varying  interests
          during the  Partnership  Year in accordance with Section 706(d) of the
          Code,  using the  interim  closing  of the books  method.  Solely  for
          purposes  of  making  such  allocations,  each of such  items  for the
          calendar  month in which the  Transfer or  assignment  occurs shall be
          allocated to the  transferee  Partner,  and none of such items for the
          calendar  month in which an exchange  occurs shall be allocated to the
          exchanging Partner,  provided,  however,  that the General Partner may
          adopt such other  conventions  relating to  allocations  in connection
          with  transfers,  assignments,  or  exchanges  as  it  determines  are
          necessary  or  appropriate.   All   distributions  of  Available  Cash
          attributable  to such L.P. Units with respect to which the Partnership
          Record  Date is  before  the  date of such  transfer,  assignment,  or
          exchange  shall be made to the  transferor  Partner or the  exchanging
          Partner,  as the  case  may  be,  and in the  case  of a  Transfer  or
          assignment other than an exchange, all distributions of Available Cash
          thereafter  attributable  to  such  L.P.  Units  shall  be made to the
          transferee Partner.

ARTICLE 12.     ADMISSION OF PARTNERS.

      12.1  ADMISSION OF SUCCESSOR  GENERAL  PARTNER.  A successor to all of the
General  Partner  Interest  pursuant  to Article 11 hereof who is proposed to be
admitted as a successor  General Partner shall be admitted to the Partnership as
the General  Partner,  effective upon the Transfer.  Any such  transferee  shall
carry on the business of the Partnership without dissolution.  In each case, the
admission  shall be subject  to the  successor  General  Partner  executing  and
delivering to the  Partnership  an acceptance of all of the terms and conditions
of this  Agreement,  the  Acquisition  Agreement,  and such other  documents  or
instruments  as may be  required  to effect the  admission.  In the case of such
admission on any day other than the first day of a Partnership  Year,  all items
attributable to the General Partner  Interest for such Partnership Year shall be
allocated  between  the  transferring  General  Partner  and such  successor  as
provided in Section 11.6D.

      12.2 ADMISSION OF ADDITIONAL AND SUBSTITUTED LIMITED PARTNERS.

     A.   A Person  who  makes a  Capital  Contribution  to the  Partnership  in
          accordance  with  this  Agreement  after  the  Effective  Date  and  a
          Permitted  Transferee  pursuant to Article 11 shall be admitted to the
          Partnership as an Additional Limited Partner or a Substituted  Limited
          Partner only upon  furnishing  to the General  Partner (i) evidence of
          acceptance in form  satisfactory  to the General Partner of all of the
          terms and conditions of this Agreement and the Acquisition  Agreement,
          including,  without  limitation,  the  power of  attorney  granted  in
          Section 2.4 hereof and (ii) such other

                                      -41-
<PAGE>

          documents or  instruments  as may be required in the discretion of the
          General  Partner  in order to effect  such  Person's  admission  as an
          Additional Limited Partner.

     B.   Notwithstanding  anything to the  contrary in this  Section  12.2,  no
          Person  shall  be  admitted  as an  Additional  Limited  Partner  or a
          Substituted  Limited  Partner  without  the  consent  of  the  General
          Partner,  which  consent  may be  given  or  withheld  in the  General
          Partner's sole and absolute discretion. The admission of any Person as
          an Additional  Limited Partner or a Substituted  Limited Partner shall
          become  effective  on the date upon  which the name of such  Person is
          recorded on the books and records of the  Partnership,  following  the
          consent of the General Partner to such admission.

     C.   If any Additional  Limited  Partner is admitted to the  Partnership on
          any day  other  than the  first day of a  Partnership  Year,  then Net
          Income, Net Losses,  each other Tax Item and all other items allocable
          among  Partners  and  Assignees  for such  Partnership  Year  shall be
          allocated among such Additional Limited Partner and all other Partners
          and Assignees by taking into account their  varying  interests  during
          the  Partnership  Year in accordance  with Section 706(d) of the Code,
          using the interim closing of the books method.  Solely for purposes of
          making such allocations,  each of such items for the calendar month in
          which an admission of any Additional  Limited  Partner occurs shall be
          allocated  among all of the Partners  and  Assignees,  including  such
          Additional  Limited Partner.  All distributions of Available Cash with
          respect  to which the  Partnership  Record  Date is before the date of
          such admission  shall be made solely to Partners and Assignees,  other
          than  the  Additional  Limited  Partner,   and  all  distributions  of
          Available  Cash  thereafter  shall be made to all of the  Partners and
          Assignees, including such Additional Limited Partner.

     D.   A transferee who has been admitted as a Substituted Limited Partner or
          an Additional Limited Partner shall have all the rights and powers and
          be  subject  to all the  restrictions  and  liabilities  of a  Limited
          Partner under this Agreement.

      12.3 AMENDMENT OF AGREEMENT AND  CERTIFICATE OF LIMITED  PARTNERSHIP.  For
the admission to the Partnership of any Partner,  the General Partner shall take
all steps  necessary and  appropriate  under the Act to amend the records of the
Partnership  and, if necessary,  to prepare as soon as practical an amendment of
this  Agreement  (including an amendment of Appendix I) and, if required by law,
shall prepare and file an amendment to the  Certificate and may for this purpose
exercise the power of attorney granted pursuant to Section 2.4 hereof.

ARTICLE 13.     DISSOLUTION, LIQUIDATION AND TERMINATION.

      13.1 DISSOLUTION.  The Partnership shall not be dissolved by the admission
of  Substituted  Limited  Partners  or  Additional  Limited  Partners  or by the
admission of a successor  General  Partner in accordance  with the terms of this
Agreement.  In the event of the withdrawal of the General Partner, any successor
General Partner shall continue the business of the Partnership.  The Partnership
shall dissolve,  and its affairs

                                      -42-
<PAGE>


shall be  wound  up,  only  upon  the  first  to  occur of any of the  following
("Liquidating Events"):

          (i) the expiration of its term as provided in Section 2.5 hereof;

          (ii) an event of withdrawal of the General Partner,  as defined in the
     Act (other than an event of bankruptcy),  unless, within 90 days after such
     event of withdrawal a majority in interest of the remaining  Partners agree
     in  writing  to  continue  the  business  of  the  Partnership  and  to the
     appointment, effective as of the date of withdrawal, of a successor General
     Partner;

          (iii)from and after the date of this  Agreement  through  December 31,
     2048, an election to dissolve the Partnership  made by the General Partner,
     with the Consent of Limited  Partners  holding  66-2/3% or more of the L.P.
     Units (including L.P. Units held by the Company);

          (iv) on or  after  January  1,  2049,  an  election  to  dissolve  the
     Partnership  made  by  the  General  Partner,  in  its  sole  and  absolute
     discretion;

          (v)  entry of a decree  of  judicial  dissolution  of the  Partnership
     pursuant to the provisions of the Act;

          (vi) the sale of all or substantially all of the assets and properties
     of the Partnership;

          (vii) a final and  non-appealable  judgment  is  entered by a court of
     competent  jurisdiction  ruling  that the  General  Partner is  bankrupt or
     insolvent,  or a final and non-appealable  order for relief is entered by a
     court with appropriate  jurisdiction  against the General Partner,  in each
     case under any federal or state  bankruptcy  or  insolvency  laws as now or
     hereafter  in effect,  unless  prior to the entry of such order or judgment
     all of the remaining  Partners agree in writing to continue the business of
     the Partnership and to the appointment, effective as of a date prior to the
     date of such order or judgment, of a substitute General Partner.

      13.2 WINDING UP.

     A.   Upon the  occurrence of a Liquidating  Event,  the  Partnership  shall
          continue  solely for the  purposes  of  winding  up its  affairs in an
          orderly manner,  liquidating its assets,  and satisfying the claims of
          its creditors  and Partners.  No Partner shall take any action that is
          inconsistent with, or not necessary to or appropriate for, the winding
          up of the Partnership's business and affairs. The General Partner, or,
          in the event there is no remaining General Partner, any Person elected
          by  Limited  Partners  holding  at  least a  majority  of the  Limited
          Partnership  Interests (the General Partner or such other Person being
          referred  to herein as the  "Liquidator"),  shall be  responsible  for
          overseeing the winding up and dissolution of the Partnership and shall
          take full account of the  Partnership's  liabilities  and property and
          the  Partnership  property  shall  be  liquidated  as  promptly  as is
          consistent  with  obtaining the fair value  thereof,  and the

                                      -43-
<PAGE>


          proceeds therefrom (which may, to the extent determined by the General
          Partner,  include shares of beneficial interest or other securities of
          the Company) shall be applied and distributed in the following order:

               (i)  First,   to  the  payment  and   discharge  of  all  of  the
          Partnership's  debts  and  liabilities  to  creditors  other  than the
          Partners;

               (ii)  Second,  to  the  payment  and  discharge  of  all  of  the
          Partnership's debts and liabilities to the General Partner;

               (iii)Third,   to  the  payment  and   discharge  of  all  of  the
          Partnership's debts and liabilities to the other Partners;

               (iv) Fourth,  to the General Partner and Limited  Partners to the
          extent  of and in  accordance  with  the  positive  balances  in their
          Capital   Accounts,   after  giving   effect  to  all   contributions,
          distributions, and allocations for all periods; and

               (v) The  balance,  if any,  to the  Partners  according  to their
          Percentage Interests.

The  General  Partner  shall not  receive any  additional  compensation  for any
services performed pursuant to this Article 13.

     B.   Notwithstanding  the  provisions of Section 13.2A hereof which require
          liquidation of the assets of the Partnership, but subject to the order
          of priorities  set forth therein,  if prior to or upon  dissolution of
          the  Partnership  the Liquidator  determines that an immediate sale of
          part or all of the Partnership's  assets would be impractical or would
          cause undue loss to the Partners,  the Liquidator may, in its sole and
          absolute  discretion,  defer for a reasonable  time the liquidation of
          any  asset  except  those  necessary  to  satisfy  liabilities  of the
          Partnership   (including  to  those  Partners  as  creditors)   and/or
          distribute to the Partners,  in lieu of cash, as tenants in common and
          in accordance  with the provisions of Section 13.2A hereof,  undivided
          interests  in such  Partnership  assets  as the  Liquidator  deems not
          suitable for liquidation. Any such distributions in kind shall be made
          only  if,  in  the  good  faith  judgment  of  the  Liquidator,   such
          distributions  in kind are in the best interests of the Partners,  and
          shall be subject to such  conditions  relating to the  disposition and
          management of such properties as the Liquidator  deems  reasonable and
          equitable  and to any  agreements  governing  the  operation  of  such
          properties  at such time.  The  Liquidator  shall  determine  the fair
          market value of any property distributed in kind using such reasonable
          method of valuation as it may adopt.

     C.   In the  discretion  of  the  Liquidator,  a pro  rata  portion  of the
          distributions  that would otherwise be made to the General Partner and
          Limited Partners pursuant to this Article 13 may be:

               (1)  distributed  to a trust  established  for the benefit of the
          General  Partner and Limited  Partners for the purposes of liquidating
          Partnership  assets,

                                      -44-
<PAGE>

          collecting amounts owed to the Partnership,  and paying any contingent
          or unforeseen  liabilities or  obligations  of the  Partnership or the
          General Partner arising out of or in connection with the  Partnership.
          The  assets of any such  trust  shall be  distributed  to the  General
          Partner  and Limited  Partners  from time to time,  in the  reasonable
          discretion of the  Liquidator,  in the same  proportions as the amount
          distributed to such trust by the Partnership would otherwise have been
          distributed to the General  Partner and Limited  Partners  pursuant to
          this Agreement; or

               (2)  withheld  or escrowed  to provide a  reasonable  reserve for
          Partnership  liabilities  (contingent or otherwise) and to reflect the
          unrealized  portion  of  any  installment   obligations  owed  to  the
          Partnership,  provided that such withheld or escrowed amounts shall be
          distributed to the General Partner and Limited  Partners in the manner
          and  order  of  priority  set  forth  in  Section  13.2A  as  soon  as
          practicable.

      13.3  OBLIGATION TO CONTRIBUTE  DEFICIT.  In the event the  Partnership is
"liquidated" within the meaning Section 1.704-1(b)(2)(ii)(G) of the Regulations,
if any Partner's Adjusted  Contributions are less than zero (after giving effect
to all  contributions,  distributions,  and  allocations  for all Fiscal  Years,
including the Fiscal Year during which such  liquidation  occurs),  such Partner
shall  contribute  to the capital of the  Partnership  the amount  necessary  to
restore such Partner's  Capital Account to zero in compliance  with  Regulations
Section 1.704-1(b)(2(ii)(B)(3).

      13.4  RIGHTS OF LIMITED  PARTNERS.  Except as  otherwise  provided in this
Agreement,  each  Limited  Partner  shall  look  solely  to  the  assets  of the
Partnership for the return of its Adjusted Capital  Contributions and shall have
no right or power to  demand  or  receive  property  other  than  cash  from the
Partnership.  Except as otherwise provided in this Agreement, no Limited Partner
shall have  priority  over any other  Partner  as to the return of its  Adjusted
Capital Contributions, distributions, or allocations.

      13.5 NOTICE OF DISSOLUTION.  In the event a Liquidating Event occurs or an
event occurs that would,  but for the  provisions of an election or objection by
one or more Partners  pursuant to Section 13.1,  result in a dissolution  of the
Partnership,  the General  Partner  shall,  within 30 days  thereafter,  provide
written notice thereof to each of the Partners.

      13.6 TERMINATION OF PARTNERSHIP AND CANCELLATION OF CERTIFICATE OF LIMITED
PARTNERSHIP.  Upon the  completion  of the  liquidation  of the  Partnership'  s
assets, as provided in Section 13.2 hereof, the Partnership shall be terminated,
a certificate of  cancellation  shall be filed,  and all  qualifications  of the
Partnership as a foreign  limited  partnership in  jurisdictions  other than the
state of Delaware  shall be canceled and such other  actions as may be necessary
to terminate the Partnership shall be taken.

      13.7 REASONABLE  TIME FOR  WINDING-UP.  A reasonable time shall be allowed
for the orderly  winding-up of the business and affairs of the  Partnership  and
the  

                                      -45-
<PAGE>


liquidation  of its assets  pursuant to Section 13.2 hereof in order to minimize
any losses otherwise attendant upon such winding-up,  and the provisions of this
Agreement  shall  remain  in effect  among the  Partners  during  the  period of
liquidation.

      13.8  WAIVER  OF  PARTITION.  Each  Partner  hereby  waives  any  right to
partition of the Partnership property.

      13.9 DEEMED  DISTRIBUTION AND  RECONTRIBUTION.  Notwithstanding  any other
provisions of this Article 13, in the event the Partnership is liquidated within
the meaning of Regulations Section 1.704-1(b)(2)(ii)(G) but no Liquidating Event
has  occurred,   the  Property  shall  not  be  liquidated,   the  Partnership's
liabilities shall not be paid or discharged, and the Partnership's affairs shall
not be wound up. Instead,  the Partnership  shall be deemed to have  distributed
the  Property in kind to the  Partners,  who shall be deemed to have assumed and
taken  subject to all  Partnership  liabilities,  all in  accordance  with their
respective Capital Accounts,  and if any Partner has an Adjusted Capital Account
Deficit  (after  giving  effect  to  all   contributions,   distributions,   and
allocations  for all Fiscal  Years,  including the Fiscal Year during which such
liquidation  occurs)  such  Partner  shall  contribute  to  the  capital  of the
Partnership  the amount  necessary to restore  such  deficit  balance to zero in
compliance  with   Regulations   Section   1.704-1(b)(2(ii)(B)(3).   Immediately
thereafter,  the Partners shall be deemed to have  recontributed the property in
kind to the Partnership, which shall be deemed to have assumed and taken subject
to all such liabilities.

ARTICLE 14.     AMENDMENT OF PARTNERSHIP AGREEMENT; MEETINGS.

      14.1 AMENDMENTS.

     A.   Amendments to this Agreement may be proposed by the General Partner or
          by any  Limited  Partners  (other  than the  Company)  holding  in the
          aggregate 25% or more of the  Partnership  Interests.  Following  such
          proposal,  the General Partner shall submit any proposed  amendment to
          the Limited Partners.  The General Partner shall seek the written vote
          of the Partners on the  proposed  amendment or shall call a meeting to
          vote  thereon  and to  transact  any other  business  that it may deem
          appropriate.  For  purposes of obtaining a written  vote,  the General
          Partner may require a response within a reasonable specified time, but
          not less than 15 days,  and  failure to  respond  in such time  period
          shall constitute a vote which is consistent with the General Partner's
          recommendation  with  respect to the  proposal.  Except as provided in
          Section 8.9, 13.1C,  14.1B, 14.1C or 14.1D, a proposed amendment shall
          be adopted and be effective  as an amendment  hereto if it is approved
          by the General Partner and it receives the Consent of Limited Partners
          holding  50%  or  more  of the  Percentage  Interests  of the  Limited
          Partners (including Limited Partner Interests held by the Company).

     B.   Notwithstanding  any  provisions  of  Sections  8.9 and  14.1A  to the
          contrary,  the  General  Partner  shall  have the power,  without  the
          consent of the Limited  Partners,

                                      -46-
<PAGE>


          to amend this  Agreement as may be required to facilitate or implement
          any of the following purposes:

               (1) to add to the obligations of the General Partner or surrender
          any right or power granted to the General  Partner or any Affiliate of
          the General Partner for the benefit of the Limited Partners;

               (2) to  reflect  the  admission,  substitution,  termination,  or
          withdrawal of Partners in accordance with this Agreement;

               (3) to set forth the designations,  rights,  powers,  duties, and
          preferences  of the holders of any  additional  Partnership  Interests
          issued pursuant to Section 4.3 hereof;

               (4) to reflect a change that is of an inconsequential  nature and
          does  not  adversely  affect  the  Limited  Partners  in any  material
          respect, or to cure any ambiguity, correct or supplement any provision
          in this Agreement not inconsistent  with law or with other provisions,
          or make other  changes  with  respect to  matters  arising  under this
          Agreement  that  will  not  be  inconsistent  with  law  or  with  the
          provisions of this Agreement; and

               (5)  to  satisfy  any  requirements,  conditions,  or  guidelines
          contained in any order, directive,  opinion, ruling or regulation of a
          federal or state agency or contained in federal or state law.

The General Partner shall provide notice to the Limited Partners when any action
under this Section 14.1B is taken.

     C.   Notwithstanding  provision of Section 14.1A and 14.1B to the contrary,
          this  Agreement  shall not be  amended  without  the  Consent  of each
          Partner  adversely  affected  if such  amendment  would (i)  convert a
          Limited  Partner's  interest in the Partnership into a General Partner
          Interest;  (ii) modify the limited liability of a Limited Partner in a
          manner  adverse to such  Limited  Partner;  (iii) alter  rights of the
          Partner to receive distributions  pursuant to Article 5 or Article 13,
          or the  allocations  specified  in  Article  6  (except  as  permitted
          pursuant to Article IV and Section  14.1B(3)  hereof);  (iv) cause the
          termination of the Partnership  prior to the time set forth in Section
          2.5 or 13.1; or (v) amend this Section  14.1C.  Further,  no amendment
          may alter the  restrictions  on the General  Partner' s authority  set
          forth in Section 13.1C without the Consent specified in that section.

      14.2 MEETINGS OF THE PARTNERS.

     A.   Meetings  of the  Partners  may be called by the  General  Partner and
          shall be called upon the  receipt by the General  Partner of a written
          request by Limited  Partners  (other than the Company)  holding 25% or
          more of the Partnership Interests.  The request shall state the nature
          of the business to be transacted.  Notice of any such meeting shall be
          given to all Partners not less than 7 days nor more than 30 days prior

                                      -47-
<PAGE>

          to the date of such  meeting.  Partners may vote in person or by proxy
          at such meeting.  Whenever the vote or Consent of the Limited Partners
          is permitted or required  under this  Agreement,  such vote or Consent
          may be  given  at a  meeting  of the  Partners  or  may  be  given  in
          accordance  with the  procedure  prescribed  in Section  14.1A hereof.
          Except as otherwise expressly provided in this Agreement,  the consent
          of holders of a majority of the Percentage  Interests held by Partners
          (including  Limited  Partnership  Interests held by the Company) shall
          control.

     B.   Any  action  required  or  permitted  to be taken at a meeting  of the
          Partners may be taken without a meeting if a written  consent  setting
          forth the  action so taken is signed by a majority  of the  Percentage
          Interests of the Partners  (or such other  percentage  as is expressly
          required by this Agreement).  Such consent may be in one instrument or
          in several instruments,  and shall have the same force and effect as a
          vote of a majority of the  Percentage  Interests  of the  Partners (or
          such other  percentage  as is expressly  required by this  Agreement).
          Such  consent  shall be filed with the General  Partner.  An action so
          taken  shall be  deemed to have  been  taken at a meeting  held on the
          effective date so certified.

     C.   Each Limited  Partner may  authorize  any Person or Persons to act for
          him by proxy on all matters in which a Limited  Partner is entitled to
          participate,  including  waiving  notice of any meeting,  or voting or
          participating at a meeting.  Every proxy must be signed by the Limited
          Partner or his  attorney-in-fact.  No proxy  shall be valid  after the
          expiration  of 11  months  from  the  date  thereof  unless  otherwise
          provided in the proxy.  Every proxy shall be revocable at the pleasure
          of the Limited  Partner  executing it, such revocation to be effective
          upon the  Partnership's  receipt of written notice of such  revocation
          from the Limited Partner executing such proxy.

     D.   Each meeting of the Partners shall be conducted by the General Partner
          or such other  Person as the General  Partner may appoint  pursuant to
          such rules for the conduct of the  meeting as the  General  Partner or
          such other  Person  deems  appropriate.  Meetings of  Partners  may be
          conducted  in the same manner as meetings of the  shareholders  of the
          Company and may be held at the same time, and as part of,  meetings of
          the shareholders of the Company.

ARTICLE 15.     GENERAL PROVISIONS.

      15.1 ADDRESSES AND NOTICE. Any notice,  demand, request or report required
or permitted to be given or made to a Partner or Assignee  under this  Agreement
shall be in writing and shall be deemed  given or made when  delivered in person
or when sent by first  class  United  States  mail or by other  means of written
communication  to  the  Partner  or  Assignee  (including  electronic  mail  and
electronic facsimile transmission if delivery in that manner has been confirmed)
at the  address  set forth in  Appendix  I or such  other  address  of which the
Partner shall notify the General Partner in writing.

      15.2 TITLES AND  CAPTIONS.  All  article or section  titles or captions in
this Agreement are for  convenience  only. They shall not be deemed part of this
Agreement and in no way define, limit, extend or describe the scope or intent of
any provisions

                                      -48-
<PAGE>


hereof. Except as specifically provided otherwise,  references to "Articles" and
"Sections" are to Articles and Sections of this Agreement.

      15.3 PRONOUNS AND PLURALS.  Whenever the context may require,  any pronoun
used in this Agreement shall include the  corresponding  masculine,  feminine or
neuter forms,  and the singular form of nouns,  pronouns and verbs shall include
the plural and vice versa.

      15.4 FURTHER ACTION.  The parties shall execute and deliver all documents,
provide  all  information  and take or  refrain  from  taking  action  as may be
necessary or appropriate to achieve the purposes of this Agreement.

      15.5 BINDING EFFECT. This Agreement shall be binding upon and inure to the
benefit  of the  parties  hereto  and their  heirs,  executors,  administrators,
successors, legal representatives and permitted assigns.

      15.6  CREDITORS.  Other than as expressly set forth herein with respect to
the  Indemnitees,  none of the  provisions  of this  Agreement  shall be for the
benefit of, or shall be enforceable by, any creditor of the Partnership.

      15.7 WAIVER. No failure by any party to insist upon the strict performance
of any covenant,  duty,  agreement or condition of this Agreement or to exercise
any right or remedy  consequent upon a breach thereof shall constitute waiver of
any such breach or any other covenant, duty, agreement or condition.

      15.8 COUNTERPARTS.  This Agreement may be executed in counterparts, all of
which  together  shall  constitute  one agreement  binding on all of the parties
hereto,  notwithstanding  that  all  such  parties  are not  signatories  to the
original  or the  same  counterpart.  Each  party  shall  become  bound  by this
Agreement immediately upon affixing its signature hereto.

      15.9  APPLICABLE  LAW. This  Agreement  shall be construed and enforced in
accordance  with and  governed  by the laws of the  State of  Delaware,  without
regard to the principles of conflicts of laws thereof.

     15.10  INVALIDITY OF  PROVISIONS.  If any provision of this Agreement is or
becomes invalid, illegal or unenforceable in any respect, the validity, legality
and  enforceability  of the remaining  provisions  contained herein shall not be
affected thereby.

     15.11 ENTIRE AGREEMENT.  This Agreement  contains the entire  understanding
and agreement  among the Partners with respect to the subject  matter hereof and
supersedes any other prior written or oral  understandings  or agreements  among
them with respect thereto.

     15.12 GUARANTY BY THE COMPANY. The Company  unconditionally and irrevocably
guarantees to the Limited Partners the performance by the General Partner

                                      -49-
<PAGE>

of the General  Partner' s obligations  under this Agreement.  This guarantee is
exclusively for the benefit of the Limited  Partners and shall not extend to the
benefit any creditor of the Partnership.



<PAGE>


      IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as of
the date first written above.



GENERAL PARTNER:

MISSION WEST PROPERTIES, A CALIFORNIA CORPORATION


By:  /s/ Michael J. Anderson
   -------------------------------------                                    
   Michael J. Anderson
Its:  Vice President and Chief Operating Officer


LIMITED PARTNERS:


/s/ Carl E. Berg
- ----------------------------------------
CARL E. BERG

/s/ Mary Ann Berg
- -----------------------------------------
MARY ANN BERG

/s/ Clyde J. Berg
- -----------------------------------------
CLYDE J. BERG





<PAGE>
<TABLE>
<CAPTION>

                                   APPENDIX I

          PARTNERS' [ADJUSTED] CONTRIBUTIONS AND PARTNERSHIP INTERESTS

 Name and Address          Cash          Agreed         Total            L.P.       Percentage
    of Partner         Contributions      Value      Contribution       Units        Interest
                                           of             **
                                       Contributed
                                        Property**
=================================================================================================
GENERAL PARTNER

<S>                                                                <C>                <C>   
Mission West                                                              ---         10.91%
Properties                                              
10050 Bandley Drive
Cupertino, CA 95014

LIMITED PARTNERS


Carl E. and Mary                                                    18,024,576        44.545%
Ann Berg
10050 Bandley Drive
Cupertino, CA 95014

Clyde J. Berg                                                       18,024,576        44.545%
10050 Bandley Drive
Cupertino, CA 95014
</TABLE>


* The Company's Cash  Contribution  shall be increased by all transaction  costs
paid  by the  Company  out of  the  Company  cash  pursuant  to the  Acquisition
Agreement.

** To be  completed  upon  final  adjustment  of  accounts  at July 1,  1998 and
preparation of 1998 federal income tax return.

<PAGE>


                                   APPENDIX II



                      ALLOCATIONS OF PARTNERSHIP INTERESTS



1.    ALLOCATION OF NET INCOME AND NET LOSS.

      (a) NET INCOME.  Except as  otherwise  provided in this  Appendix  II, Net
Income (or items thereof) (other than Net Income,  or items thereof,  arising in
connection with a Terminating Capital  Transaction) for any fiscal year or other
applicable  period shall be allocated to the Partners in  accordance  with their
respective Percentage Interests.

      (b) NET LOSS.  Except as otherwise  provided in this Appendix II, Net Loss
(or items thereof) of the Partnership  for each fiscal year or other  applicable
period  shall be  allocated to the  Partners in  accordance  with the  Partners'
respective Percentage Interests.  Notwithstanding the preceding sentence, to the
extent  any Net Loss (or  items  thereof)  allocated  to a  Partner  under  this
subparagraph (b) would cause such Partner (hereinafter,  a "Restricted Partner")
to have an  Adjusted  Capital  Account  Deficit,  or  increase  the amount of an
existing  Adjusted Capital Account Deficit,  as of the end of the fiscal year or
other applicable period to which such Net Loss relates,  such Net Loss shall not
be allocated to such  Restricted  Partner and instead  shall be allocated to the
other Partner(s) (hereinafter,  the "Permitted Partners") pro rata in accordance
with each Permitted Partner's Percentage Interest.

      (c)  TERMINATING  CAPITAL  TRANSACTION;  LIQUIDATION.  Allocations  of Net
Income or Net Loss (or items thereof) in connection  with a Terminating  Capital
Transaction or Liquidation  of the  Partnership  shall first be made so that, to
the extent  possible,  each Partner's  Capital  Account balance is equal to such
Partner's  Adjusted  Contribution,  and the  remainder of such Net Income or Net
Loss (or items  thereof)  shall be allocated to the Partners in accordance  with
their  Percentage  Interests.  Notwithstanding  the preceding  sentence,  to the
extent  any Net Loss (or  items  thereof)  would be  allocated  to a  Restricted
Partner  under this  subparagraph  (c),  such Net Loss shall not be allocated to
such Restricted Partner and instead shall be allocated to the Permitted Partners
pro rata in accordance with each Permitted Partner's Percentage Interest.

      (d) RULES OF CONSTRUCTION.

           (1) CAPITAL  ACCOUNT  INCREASES.  For purposes of making  allocations
pursuant to subparagraph  1(c) of this Appendix II, a Partner's  Capital Account
balance  shall  be  deemed  to be  increased  by  such  Partner's  share  of any
Partnership  Minimum Gain and Partner Minimum Gain remaining at the close of the
fiscal period in respect of which such allocations are being made.

           (2)  CHANGE IN  PERCENTAGE  INTERESTS.  In the  event  any  Partner's
Percentage  Interest  changes  during a fiscal  year for any  reason,  including
without  limitation,  the Transfer of any interest in the  Partnership,  the tax
allocations  contained  in this  Appendix  II shall be applied as  necessary  to
reflect the varying interests of the Partners during such year.

2.    SPECIAL ALLOCATIONS.

      Notwithstanding  any  provisions  of paragraph 1 of this  Appendix II, the
following special allocations shall be made.

      (a) MINIMUM GAIN CHARGEBACK (NONRECOURSE LIABILITIES). Except as otherwise
provided in Section 1.704-2(f) of the Regulations, if there is a net decrease in
Partnership  Minimum Gain for any Partnership fiscal year, each Partner shall be
specially  allocated items of Partnership income and gain for such year (and, if
necessary,  subsequent  years) in an amount equal to such Partner's share of the
net decrease in Partnership  Minimum Gain to the extent  required by Regulations
Section  1.704-2(f).  The  items  to be so  allocated  shall  be  determined  in
accordance  with  Sections  1.704-2(f)  and  (j)(2)  of  the  Regulations.  This
subparagraph  2(a) is  intended  to  comply  with the  minimum  gain  chargeback
requirement  in  said  section  of the  Regulations  and  shall  be  interpreted
consistently therewith.  Allocations pursuant to this subparagraph 2(a) shall be
made in proportion to the  respective  amounts  required to be allocated to each
Partner pursuant hereto.

      (b) PARTNER  MINIMUM  GAIN  CHARGEBACK.  Except as  otherwise  provided in
Section 1.704-2(i)(4) of the Regulations,  if there is a net decrease in Partner
Minimum Gain attributable to a Partner  Nonrecourse Debt during any fiscal year,
each Partner who has a share of the Partner  Minimum Gain  attributable  to such
Partner  Nonrecourse Debt,  determined in accordance with Section 1.704- 2(i)(5)
of the Regulations, shall be specially allocated items of Partnership income and
gain for such year (and, if necessary,  subsequent  years) in an amount equal to
that  Partner's   share  of  the  net  decrease  in  the  Partner  Minimum  Gain
attributable  to such Partner  Nonrecourse  Debt to the extent and in the manner
required by Section 1.704-2(i) of the Regulations.  The items to be so allocated
shall be determined in accordance with Sections  1.704-2(i)(4) and (j)(2) of the
Regulations.  This subparagraph 2(b) is intended to comply with the minimum gain
chargeback  requirement  with respect to Partner  Nonrecourse  Debt contained in
said  Section   1.704-2(i)(4)  of  the  Regulations  and  shall  be  interpreted
consistently therewith.  Allocations pursuant to this subparagraph 2(b) shall be
made in proportion to the  respective  amounts  required to be allocated to each
Partner pursuant hereto.

      (c) QUALIFIED INCOME OFFSET. In the event a Partner unexpectedly  receives
any   adjustments,   allocations   or   distributions   described   in  Sections
1.704-1(b)(2)(ii)(d)(4),  (5) or (6) of the Regulations, and such Partner has an
Adjusted Capital Account Deficit,  items of Partnership  income (including gross
income) and gain shall be  specially  allocated to such Partner in an amount and
manner  sufficient to eliminate the Adjusted  Capital Account Deficit as quickly
as possible as required by the Regulations.  This  subparagraph 2(c) is intended
to constitute a "qualified income offset" under Section  1.704-1(b)(2)(ii)(d) of
the Regulations and shall be interpreted consistently therewith.

      (d) OTHER  CHARGEBACK OF IMPERMISSIBLE  NEGATIVE  CAPITAL ACCOUNT.  To the
extent any  Partner has an Adjusted  Capital  Account  Deficit at the end of any
Partnership  Year,  each such  Partner  shall be  specially  allocated  items of
Partnership  income  (including  gross  income)  and gain in the  amount of such
excess as quickly as  possible,  provided  that an  allocation  pursuant to this
paragraph  2(d) shall be made if and only to the extent that such Partner  would
have an Adjusted  Capital Account Deficit after all other  allocations  provided
for in this Appendix II have been  tentatively  made as if this  paragraph  2(d)
were not in the Agreement.

      (e) NONRECOURSE DEDUCTIONS.  Nonrecourse Deductions for any fiscal year or
other  applicable  period shall be allocated to the Partners in accordance  with
their respective Percentage Interests.

      (f) PARTNER NONRECOURSE DEDUCTIONS. Partner Nonrecourse Deductions for any
fiscal year or other  applicable  period with  respect to a Partner  Nonrecourse
Debt shall be specially allocated to the Partner that bears the economic risk of
loss  for  such  Partner   Nonrecourse   Debt  (as  determined   under  Sections
1.704-2(b)(4) and 1.704-2(i)(1) of the Regulations).

      (g)  INTENT  OF  ALLOCATIONS.  The  parties  intend  that  the  allocation
provisions of this Appendix II shall result in final Capital Account balances of
the Partners that  initially are equal to each Partner's  Adjusted  Contribution
and are then in proportion to the Partners' respective Percentage Interests,  so
that when  liquidating  distributions  are made in  accordance  with such  final
Capital Account balances under Section 13.2A(4) hereof,  such distributions will
be able to return to each  Partner its  Adjusted  Contribution  and then will be
made in proportion  to the Partners'  respective  Percentage  Interests.  To the
extent that such final Capital Account balances do not so reflect the provisions
of this Appendix II, income and loss of the Partnership for the current year and
future  years,  as computed  for book  purposes,  shall be  allocated  among the
Partners  so as to result  in final  Capital  Account  balances  reflecting  the
provisions of this Appendix II, and to the extent such  allocations  of items of
income  (including  gross  income)  and  deduction  do not  result in such final
Capital  Account  balances,  then,  income and loss of the Partnership for prior
open  years,  as  computed  for book  purposes  (or  items of gross  income  and
deduction of the  Partnership  for such years,  as computed  for book  purposes)
shall be reallocated  among the Partners  consistent  with the  foregoing.  This
subparagraph shall control  notwithstanding any reallocation of income, loss, or
items thereof, as computed for book purposes, by the Internal Revenue Service or
any other taxing authority.

      (h) SECTION 754  ADJUSTMENT.  To the extent an  adjustment to the adjusted
tax basis of any asset of the Partnership pursuant to Section 734(b) of the Code
or  Section  743(b) of the Code is  required  pursuant  to  Regulations  Section
1.704-1(b)(2)(iv)(m)  to be taken into account in determining  Capital Accounts,
the amount of such  adjustment  to the Capital  Accounts  shall be treated as an
item of gain (if the  adjustment  increases  the basis of the asset) or loss (if
the  adjustment  decreases  such basis) and such gain or loss shall be specially
allocated  among the  Partners in a manner  consistent  with the manner in which
each of their respective  Capital Accounts are required to be adjusted  pursuant
to such section of the Regulations.

      (i) GROSS INCOME  ALLOCATION.  There shall be  specially  allocated to the
General Partner an amount of Partnership income and gain during each Partnership
Year or portion thereof, before any other allocations are made hereunder,  which
is equal to the excess, if any, of the cumulative  distributions of cash made to
the General Partner under Section 7.3B hereof over the cumulative allocations of
Partnership  income and gain to the General Partner pursuant to this Section (i)
of this Appendix II.

3.    TAX ALLOCATIONS.

      (a) ITEMS OF  INCOME OR LOSS.  Except  as is  otherwise  provided  in this
Appendix II, an  allocation of  Partnership  Net Income or Net Loss to a Partner
shall be treated as an allocation to such Partner of the same share of each item
of  income,  gain,  loss,  deduction  and item of  tax-exempt  income or Section
705(a)(2)(B)  expenditure  (or item  treated  as such  expenditure  pursuant  to
Regulations  Section  1.704-1(b)(2)(iv)(i))  ("Tax  Items")  that is taken  into
account in computing Net Income or Net Loss.

      (b) SECTION 1245/1250  RECAPTURE.  If any portion of gain from the sale of
Partnership  assets is treated as gain which is ordinary income by virtue of the
application of Code Sections 1245 or 1250 ("Affected Gain"),  then such Affected
Gain shall be  allocated  among the  Partners  in the same  proportion  that the
depreciation and amortization  deductions  giving rise to the Affected Gain were
allocated.  This  subparagraph 3(b) shall not alter the amount of Net Income (or
items thereof)  allocated  among the Partners,  but merely the character of such
Net Income (or items thereof).  For purposes  hereof,  in order to determine the
proportionate  allocations of depreciation and amortization  deductions for each
fiscal  year or  other  applicable  period,  such  deductions  shall  be  deemed
allocated  on the same  basis  as Net  Income  and Net Loss for such  respective
period.

      (c) PRECONTRIBUTION GAIN. The Partnership may elect the traditional method
of allocation  contained in Section 1.704- 3(b) of the  Regulations to take into
account any  variation  between the adjusted  basis and the fair market value of
the   Initial   Contributed   Property   at  the   time   of  the   contribution
("Precontribution  Gain") on a  Property-by-Property  basis.  By executing  this
Agreement, each Partner hereby agrees to report income, gain, loss and deduction
on such Partner's  federal income tax return in a manner that is consistent with
the use of the  traditional  method of  allocation  with  respect to the Initial
Contributed Property.  With respect to any Contributed Property, the Partnership
shall use any permissible method contained in the Regulations  promulgated under
Section  704(c)  of the  Code  selected  by the  General  Partner,  in its  sole
discretion,  to take into account any  variation  between the adjusted  basis of
such  asset  and the  fair  market  value  of such  asset  as of the time of the
contribution.  Each  Partner  hereby  agrees to report  income,  gain,  loss and
deduction on such  Partner's  federal  income tax return in a manner  consistent
with the method used by the Partnership.

      (d) ALLOCATIONS  RESPECTING SECTION 704(C) AND REVALUATIONS.  If any asset
has a Gross Asset Value which is different from the Partnership's adjusted basis
for such asset for  federal  income tax  purposes  because the  Partnership  has
revalued such asset pursuant to Regulations  Section  1.704-1(b)(2)(iv)(f),  the
allocations  of Tax Items shall be made in  accordance  with the  principles  of
Section  704(c) of the Code and the  Regulations  and the methods of  allocation
promulgated thereunder,  provided, however, that the General Partner shall elect
with respect to each Initial Contributed Property, to allocate the income, gain,
loss and deduction with respect to such Property using the "traditional  method"
described in Regulations  Section  1.704-3(b) unless the majority of the Limited
Partners affected thereby otherwise instruct the General Partner.  The intent of
this Section 3(d) and Section 3(c) above is that each Partner who contributed to
the capital of the Partnership a Contributed Property will bear, through reduced
allocations of depreciation,  increased  allocations of gain or other items, the
tax detriments  associated with any Precontribution  Gain. This Section 3(d) and
Section 3(c) are to be interpreted consistently with such intent.

      (e) EXCESS  NONRECOURSE  LIABILITY  SAFE HARBOR.  Pursuant to  Regulations
Section  1.752-3(a)(3),  solely  for  purposes  of  determining  each  Partner's
proportionate share of the "excess  nonrecourse  liabilities" of the Partnership
(as defined in  Regulations  Section  1.752-3(a)(3)),  the Partners'  respective
interests in  Partnership  profits shall be  determined in accordance  with each
Partner's  Percentage  Interest;  provided,  however,  that each Partner who has
contributed  an  asset to the  Partnership  shall be  allocated,  to the  extent
possible,  a share of "excess nonrecourse  liabilities" of the Partnership which
results in such Partner being  allocated  nonrecourse  liabilities  in an amount
which is at least equal to the amount of income  pursuant  to Section  704(c) of
the Code and the Regulations promulgated thereunder (the "Liability Shortfall").
In the event  there is an  insufficient  amount of  nonrecourse  liabilities  to
allocate  to each  Partner  an amount of  nonrecourse  liabilities  equal to the
Liability Shortfall, then an amount of nonrecourse liabilities in proportion to,
and to the  extent  of,  the  Liability  Shortfall  shall be  allocated  to each
Partner.

      (f)  REFERENCES TO  REGULATIONS.  Any reference in this Appendix II or the
Agreement to a provision of proposed and/or temporary  Regulations shall, in the
event  such  provision  is  modified  or  renumbered,  be deemed to refer to the
successor  provision as so modified or  renumbered,  but only to the extent such
successor  provision  applies to the Partnership  under the effective date rules
applicable to such successor provision.

      (g) SUCCESSOR PARTNERS.  For purposes of this Appendix II, a transferee of
a Partnership  Interest  shall be deemed to have been  allocated the Net Income,
Net Loss and other items of Partnership income, gain, loss, deduction and credit
allocable to the  transferred  Partnership  Interest that  previously  have been
allocated to the transferor Partner pursuant to this Agreement.

      (h) LIMITATION TO PRESERVE REIT STATUS.  Notwithstanding  anything else in
this  Agreement,  to the extent that the amount paid,  credited,  distributed or
reimbursed  by the  Partnership  or any  Partners  to, for or with  respect  any
Partner that is a REIT ("REIT Partner") or its officers, directors, employees or
agents,  whether  as  a  reimbursement,  fee,  expense  or  indemnity  (a  "REIT
Payment"),  would  constitute  gross  income to the REIT Partner for purposes of
Section 856 (c)(2) or Section 856(c)(3) of the Code, then,  notwithstanding  any
other provision of this Agreement, the amount of such REIT Payments, as selected
by  the  General  Partner  in its  discretion  from  among  items  of  potential
distribution,  reimbursement,  fees, expenses and indemnities,  shall be reduced
for any Fiscal Year so that the REIT  Payments,  as so reduced,  to, for or with
respect to such REIT Partner shall not exceed the lesser of:

           (i)  an  amount  equal  to the  excess,  if  any,  of  (x)  four  and
nine-tenths percent (4.9%) of the REIT Partner total gross income (but excluding
the  amount of any REIT  Payments)  for the  Fiscal  Year that is  described  in
subsections  (A) through (H) of Section  856(c)(2)  over (y) the amount of gross
income  (within the meaning of Section  856(c)(2))  derived by the REIT  Partner
from  sources  other than those  described  in  subsections  (A)  through (H) of
Section 856(c)(2) (but not including the amount of any REIT Payments); or

           (ii) an amount  equal to the  excess,  if any, of (x) 24% of the REIT
Partner's total gross income (but excluding the amount of any REIT Payments) for
the Fiscal  Year that is  described  in  subsections  (A) through (I) of Section
856(c)(3)  over (y) the amount of gross  income  (within  the meaning of Section
856(c)(3))  derived by the REIT Partner from sources other than those  described
in  subsections  (A) through (I) of Section  856(c)(3)  (but not  including  the
amount of any REIT Payments);

PROVIDED,  HOWEVER,  that REIT  payments  in excess of the  amounts set forth in
clauses  (i) and (ii) above may be made if the General  Partner,  as a condition
precedent,  obtains an opinion of tax  counsel  that the  receipt of such excess
amounts shall not adversely  affect the REIT  Partner's  ability to qualify as a
REIT.  To the extent  that REIT  Payments  may not be made in a Fiscal Year as a
consequence  of the  limitations  set  forth in this  Section  3(h),  such  REIT
Payments  shall  carry over and shall be  treated  as  arising in the  following
Fiscal Year.  Nothing in this  Section 3(h) shall permit the General  Partner to
allocate  income of the  Partnership to any Partner in excess of the income that
would  otherwise  be  allocated  to it under  Article 6  without  regard to this
Section 3(h). The purpose of the  limitations  contained in this Section 3(h) is
to prevent any REIT  Partner from failing to qualify as a REIT under the Code by
reason  of  such  REIT  Partner's  share  of  items,  including   distributions,
reimbursements, fees, expenses or indemnities, receivable directly or indirectly
from the Partnership or the Partners, and this Section 3(h) shall be interpreted
and applied to effectuate such purpose.

<PAGE>





- ---------------------------------------------------------------------













                              AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                        MISSION WEST PROPERTIES, L.P. III









                                  JULY 1, 1998

- ---------------------------------------------------------------------

<PAGE>
<TABLE>
<CAPTION>



                                TABLE OF CONTENTS

                                                                PAGE
                                       
<S>                                                              <C>    
ARTICLE 1. Defined Terms..........................................2

  1.1 "Act".......................................................2
  1.2 "Acquisition Agreement".....................................2
  1.3 "Additional Limited Partner"................................2
  1.4 "Adjusted Capital Account Deficit"..........................2
  1.5 "Adjusted Contribution".....................................2
  1.6 "Affiliate".................................................3
  1.7 "Agreement".................................................3
  1.8 "Articles of Incorporation".................................3
  1.9 "Assignee"..................................................3
  1.10 "Available Cash"...........................................3
  1.11 "Berg Acquisition".........................................3
  1.12 "Berg Group"...............................................3
  1.13 "Berg Land Holdings".......................................3
  1.14 "Capital Account"..........................................4
  1.15 "Capital Contribution".....................................5
  1.16 "Capital Event"............................................5
  1.17 "Certificate"..............................................5
  1.18 "Change of Control Transaction"............................5
  1.19 "Charter"..................................................5
  1.20 "Code".....................................................5
  1.21 "Common Stock".............................................5
  1.22 "Common Stock Price".......................................6
  1.23 "Company"..................................................6
  1.24 "Consent"..................................................6
  1.25 "Depreciation".............................................6
  1.26 "Dividend Reinvestment Plan"...............................6
  1.27 "Effective Date"...........................................6
  1.28 "Employee Benefit Plan"....................................6
  1.29 "Entity"...................................................7
  1.30 "Equity Security"..........................................7
  1.31 "ERISA"....................................................7
  1.32 "Exchange Act".............................................7
  1.33 "Exchange Factor"..........................................7
  1.34 "Exchange Right"...........................................7
  1.35 "Exchange Rights Agreement"................................7
  1.36 "GAAP".....................................................7
  1.37 "General Partner"..........................................7
  1.38 "General Partner Interest".................................7
  1.39 "Gross Asset Value"........................................7
  1.40 "Immediate Family".........................................8
  1.41 "Incapacity" or "Incapacitated"............................8
  1.42 "Indemnitee"...............................................9
  1.43 "Initial Contributed Property".............................9
 

                                     - i -

<PAGE>
  1.44 "Lien".....................................................9
  1.45 "Limited Partner".........................................10
  1.46 "Limited Partner Interest"................................10
  1.47 "Liquidating Event".......................................10
  1.48 "Liquidator"..............................................10
  1.49 "L.P. Unit"...............................................10
  1.50 "L.P. Unit Majority"......................................10
  1.51 "Net Income" or "Net Loss"................................10
  1.52 "New Equity Financing Right"..............................11
  1.53 "Nonrecourse Deductions"..................................11
  1.54 "Nonrecourse Liabilities".................................11
  1.55 "Operating Partnership"...................................11
  1.56 "Partner".................................................11
  1.57 "Partner Minimum Gain"....................................11
  1.58 "Partner Nonrecourse Debt"................................11
  1.59 "Partner Nonrecourse Deductions"..........................11
  1.60 "Partnership".............................................12
  1.61 "Partnership Interest"....................................12
  1.62 "Partnership Minimum Gain"................................12
  1.63 "Partnership Record Date".................................12
  1.64 "Partnership Year"........................................12
  1.65 "Pending Development Projects"............................12
  1.66 "Partnership Interest"....................................12
  1.67 "Permitted Partners"......................................12
  1.68 "Permitted Transferee"....................................12
  1.69 "Person"..................................................12
  1.70 "Precontribution Gain"....................................12
  1.71 "Put Rights"..............................................12
  1.72 "Protective Provisions Expiration Date"...................13
  1.73 "Quarter".................................................13
  1.74 "Regulations".............................................13
  1.75 "REIT"....................................................13
  1.76 "REIT Requirements".......................................13
  1.77 "Restricted Partner"......................................13
  1.78 "SEC".....................................................13
  1.79 "Securities Act"..........................................13
  1.80 "Stock Option Plan".......................................13
  1.81 "Subsidiary"..............................................13
  1.82 "Substituted Limited Partner".............................13
  1.83 "Tax Items"...............................................13
  1.84 "Terminating Capital Transaction".........................14
  1.85 "Total Market Capitalization".............................14
  1.86 "Transfer"................................................14
  1.87 "Unit"....................................................14
  

                                     - ii -

<PAGE>
  1.88 "United States Person"....................................14
  1.89 "Voting Securities".......................................14

ARTICLE 2. Organizational Matters................................14

  2.1 Continuation...............................................14
  2.2 Name.......................................................14
  2.3 Registered Office and Agent; Principal Office..............15
  2.4 Power of Attorney..........................................15
  2.5 Term.......................................................16

ARTICLE 3. Purpose...............................................16

  3.1 Purpose and Business.......................................16
  3.2 Powers.....................................................17

ARTICLE 4. Capital Contributions.................................17

  4.1 Capital Contributions of the Partners......................17
  4.2 Additional Funds; Restrictions on Company..................17
  4.3 Issuance of Additional Partnership Interests; Admission 
      of Additional Limited Partners.............................19
  4.4 Repurchase of Company Equity Securities....................19
  4.5 No Third Party Beneficiary.................................20
  4.6 No Interest; No Return.....................................20

ARTICLE 5. Distributions.........................................20

  5.1 Regular Distributions......................................20
  5.2 Qualification as a REIT....................................20
  5.3 Withholding................................................21
  5.4 Additional Partnership Interests...........................21
  5.5 Distributions Upon Liquidation.............................21

ARTICLE 6. Allocations...........................................21

ARTICLE 7. Management and Operation of Business..................21

  7.1 Management.................................................21
  7.2 Certificate of Limited Partnership.........................22
  7.3 Reimbursement of the General Partner and the Company.......23
  7.4 Outside Activities of the General Partner..................23
  7.5 Contracts with Affiliates..................................23
  7.6 Indemnification............................................24
 

                                    - iii -

<PAGE>
  7.7 Liability of the General Partner...........................26
  7.8 Limited Partners' Right to Bring Derivative Lawsuits.......27
  7.9 Other Matters Concerning the General Partner...............27
  7.10 Title to Partnership Assets...............................27
  7.11 Reliance by Third Parties.................................28

ARTICLE 8. Rights and Obligations of Limited Partners............28

  8.1 Limitation of Liability....................................28
  8.2 Management of Business.....................................28
  8.3 Outside Activities of Limited Partners.....................29
  8.4 Return of Capital..........................................29
  8.5 Rights of Limited Partners Relating to the Partnership.....29
  8.6 Exchange Rights............................................30
  8.7 Put Rights.................................................30
  8.8 New Equity Financing Rights................................32
  8.9 Matters Requiring L.P. Unit Majority Approval..............32
  8.10 Approval of Certain Taxable Sales.........................33

ARTICLE 9. Books, Records, Accounting and Reports................33

  9.1 Records and Accounting.....................................33
  9.2 Fiscal Year................................................34

ARTICLE 10. Tax Matters..........................................34

  10.1 Preparation of Tax Returns................................34
  10.2 Tax Elections.............................................34
  10.3 Tax Matters Partner.......................................34
  10.4 Organizational Expenses...................................36
  10.5 Withholding...............................................36

ARTICLE 11. Transfers and Withdrawals............................37

  11.1 Transfer..................................................37
  11.2 Transfer of the Company's Partnership Interests...........37
  11.3 Limited Partners' Rights to Transfer......................37
  11.4 Substituted Limited Partners..............................40
  11.5 Assignees.................................................40
  11.6 Effect of Prohibited Transfer.............................41
  11.7 General Provisions........................................41

ARTICLE 12. Admission of Partners................................41

                                     - iv -


<PAGE>
  12.1 Admission of Successor General Partner....................41
  12.2 Admission of Additional and Substituted Limited Partners..42
  12.3 Amendment of Agreement and Certificate of Limited 
       Partnership...............................................43

ARTICLE 13. Dissolution, Liquidation and Termination.............43

  13.1 Dissolution...............................................43
  13.2 Winding Up................................................44
  13.3 Obligation to Contribute Deficit..........................45
  13.4 Rights of Limited Partners................................46
  13.5 Notice of Dissolution.....................................46
  13.6 Termination of Partnership and Cancellation of 
       Certificate of Limited Partnership........................46
  13.7 Reasonable Time for Winding-Up............................46
  13.8 Waiver of Partition.......................................46
  13.9 Deemed Distribution and Recontribution....................46

ARTICLE 14. Amendment of Partnership Agreement; Meetings.........47

  14.1 Amendments................................................47
  14.2 Meetings of the Partners..................................48

ARTICLE 15. General Provisions...................................49

  15.1 Addresses and Notice......................................49
  15.2 Titles and Captions.......................................49
  15.3 Pronouns and Plurals......................................49
  15.4 Further Action............................................49
  15.5 Binding Effect............................................50
  15.6 Creditors.................................................50
  15.7 Waiver....................................................50
  15.8 Counterparts..............................................50
  15.9 Applicable Law............................................50
  15.10 Invalidity of Provisions.................................50
  15.11 Entire Agreement.........................................50
  15.12 Guaranty by the Company..................................50


</TABLE>
                                     - v -

<PAGE>


                              AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                                       OF

                        MISSION WEST PROPERTIES, L.P. III



      This AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP OF MISSION WEST
PROPERTIES,  L.P. III (this  "Agreement"),  dated as of July 1, 1998, is entered
into by and  among  Mission  West  Properties,  a  California  corporation  (the
"Company" or the "General Partner") and the parties whose names are set forth on
Appendix I attached hereto (as it may be amended from time to time).

      WHEREAS, the Partnership was organized initially as Kontrabecki Associates
I, a California limited partnership and became a limited partnership pursuant to
the Revised Uniform Limited Partnership Act of the State of Delaware by filing a
Certificate  of Conversion of Limited  Partnership  and a Certificate of Limited
Partnership for Mission West Properties, L.P. III with the Secretary of State of
the State of Delaware on July 1, 1998;

      WHEREAS,  prior to its conversion to a Delaware limited  partnership,  the
Partnership has been operated and managed by John T. Kontrabecki ("Kontrabecki")
as sole  general  partner,  pursuant  to the terms of the  Agreement  of Limited
Partnership of Kontrabecki Associates I (the "Prior Agreement");

      WHEREAS,  pursuant to the terms of a Acquisition Agreement dated as of May
14,  1998,  as amended  as of July 1, 1998 (the  "Acquisition  Agreement"),  the
Company  has  agreed  to  acquire  a  10.91%  general  partner  interest  in the
Partnership and to become the sole general  partner in the Partnership  upon the
satisfaction of certain conditions set forth in the Acquisition Agreement, which
now have been satisfied or waived by the parties thereto;

      WHEREAS,  Kontrabecki  and all of the limited  partners in the Partnership
wish to admit the  Company  as a general  partner,  to file the  certificate  of
limited  partnership of the Partnership to reflect the Company's  admission as a
general  partner,  and to amend and  restate  the Prior  Agreement  as  provided
herein; and

      WHEREAS,  upon the  filing of the  Certificate  of  Conversion  of Limited
Partnership and the certificate of limited  partnership of the Partnership  with
the Secretary of State of the State of Delaware,  Kontrabecki  intends to resign
as a general 



<PAGE>
partner and become a limited partner in the Partnership pursuant to the terms of
this Agreement.

      NOW THEREFORE,  in consideration of the mutual covenants herein contained,
and other valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties do hereby agree as follows:

ARTICLE 1. DEFINED TERMS.

      The  following  definitions  shall be for all purposes,  unless  otherwise
clearly  indicated to the contrary,  applied to the following terms used in this
Agreement.

      1.1 "ACT" the Delaware Revised Uniform Limited  Partnership Act, as it may
be amended from time to time, and any successor to such statute.

      1.2 "ACQUISITION  AGREEMENT" means the agreement dated as of May 14, 1998,
as amended as of July 1, 1998,  among the  Partnership,  the other  partnerships
comprising  the  Operating  Partnership,  all of the partners  therein,  and the
Company  concerning  the  acquisition  of  the  Berg  Properties,  the  Acquired
Properties and the Pending  Development  Projects by the Operating  Partnership,
the Company's  investment in and admission to the Operating  Partnership as sole
general  partner,  and the rights and  options of the  limited  partners  in the
Operating  Partnership  to tender L.P.  Units or acquire  shares of Common Stock
under certain circumstances.

      1.3  "ADDITIONAL   LIMITED   PARTNER"  means  a  Person  admitted  to  the
Partnership as a Limited Partner pursuant to Section 4.3 hereof and who is shown
as such on the books and records of the Partnership.

      1.4 "ADJUSTED  CAPITAL ACCOUNT DEFICIT" means with respect to any Partner,
the negative balance, if any, in such Partner's Capital Account as of the end of
any  relevant  fiscal year,  determined  after  giving  effect to the  following
adjustments:

     (a)  credit to such Capital  Account any portion of such  negative  balance
          which  such  Partner  (i) is treated  as  obligated  to restore to the
          Partnership pursuant to the provisions of Section 1.704-1(b)(2)(ii)(c)
          of the  Regulations,  or (ii) is deemed to be  obligated to restore to
          the  Partnership  pursuant to the  penultimate  sentences  of Sections
          1.704-2(g)(1) and 1.704-2(i)(5) of the Regulations; and

     (b)  debit  to  such  Capital  Account  the  items  described  in  Sections
          1.704-1(b)(2)(ii)(d)(4), (5) and (6) of the Regulations.

      1.5 "ADJUSTED CONTRIBUTION" means the Capital Contributions of any Partner
reduced by the total distributions to such Partner from Capital Events occurring
subsequent to the Closing Date under the Acquisition Agreement.  For purposes of
this Agreement,  the initial Capital  Contribution of the Company shall be equal
to [$35,200,000]  and the initial Adjusted  Contribution of each Limited Partner
shall be 


                                     - 2 -

<PAGE>
equal  to  the  value  of  the  Limited  Partner's  interest  in  the  Operating
Partnership as set forth in Appendix I of the Acquisition Agreement.

      1.6  "AFFILIATE"  means,  (a) with respect to any individual  Person,  any
member of the  Immediate  Family of such Person or a trust  established  for the
benefit of such  member,  or (b) with respect to any Entity,  any Person  which,
directly  or  indirectly  through  one  or  more  intermediaries,  controls,  is
controlled by, or is under common control with, any such Entity.

      1.7  "AGREEMENT"  means this  Amended and  Restated  Agreement  of Limited
Partnership,  as originally executed and as amended,  modified,  supplemented or
restated from time to time, as the context requires.

      1.8 "ARTICLES OF INCORPORATION" means the Articles of Incorporation of the
Company,  as  amended  and  restated  from  time to  time,  or the  articles  of
incorporation,  certificate  of  incorporation,  operating  agreement  of  other
Charter  instrument of any  corporation  or other entity which is a successor to
the Company by merger or consolidation.

      1.9  "ASSIGNEE"  means a Person to whom one or more L.P.  Units  have been
transferred in a manner permitted under this Agreement, but who has not become a
Substituted Limited Partner, and who has the rights set forth in Section 11.5.

      1.10  "AVAILABLE  CASH"  means the  Partnership's  share of the  Operating
Partnership's  Available  Cash (as defined in the  Acquisition  Agreement)  with
respect to the applicable  period of measurement  (i.e., any period beginning on
the first day of the fiscal year, quarter or other period commencing immediately
after the last day of the fiscal year,  quarter or other  applicable  period for
purposes of the prior calculation of Available Cash for or with respect to which
a  distribution  has been made,  and ending on the last day of the fiscal  year,
quarter  or  other  applicable  period  immediately  preceding  the  date of the
calculation).  Notwithstanding  the foregoing,  Available Cash shall not include
any cash  received or  reductions  in  reserves,  nor shall the  calculation  of
Available Cash take into account any disbursements made or reserves established,
after commencement of the dissolution and liquidation of the Partnership.

      1.11  "BERG  ACQUISITION"  has the  meaning  set forth in the  Acquisition
Agreement.

      1.12 "BERG GROUP" means Carl E. Berg,  Clyde J. Berg, the members of their
respective  Immediate  Families,  and any Entity which is an Affiliate of either
Carl E. Berg or Clyde J. Berg, excluding the Partnership and the Company.

      1.13 "BERG LAND  HOLDINGS"  means certain land held by members of the Berg
Group which the Operating  Partnership  may acquire under certain  circumstances
pursuant to the terms of the  Acquisition  Agreement  and the related  Berg Land
Holdings  


                                     - 3 -

<PAGE>
Option  Agreement  to be entered into by the parties  thereto  upon  approval of
certain transactions by the Company's shareholders.

      1.14  "CAPITAL  ACCOUNT"  means with respect to any  Partner,  the Capital
Account maintained for such Partner in accordance with the following provisions:

     (a)  to each  Partner's  Capital  Account  there shall be credited (i) such
          Partner's  Initial  Adjusted  Contribution as of the effective date of
          this Agreement (ii) such Partner's Capital Contributions subsequent to
          the  Effective   Date  of  this   Agreement,   (iii)  such   Partner's
          distributive share of Net Income and any items in the nature of income
          or gain which are  specially  allocated  to such  Partner  pursuant to
          Sections 1 and 2 of Appendix II and (iv) the amount of any Partnership
          liabilities  assumed by such Partner or which are secured by any asset
          distributed to such Partner;

     (b)  to each  Partner's  Capital  Account  there  shall be debited  (i) the
          amount of cash and the Gross Asset Value of any  Property  distributed
          to such Partner pursuant to any provision of this Agreement, (ii) such
          Partner's distributive share of Net Losses and any items in the nature
          of expenses or losses  which are  specially  allocated to such Partner
          pursuant to  Sections 1 and 2 of Appendix  II, and (iii) the amount of
          any  liabilities of such Partner  assumed by the  Partnership or which
          are  secured  by  any  asset   contributed  by  such  Partner  to  the
          Partnership to the extent not assumed by the Partner; and

     (c)  in the event all or a portion of a Partnership Interest is transferred
          in accordance with the terms of this Agreement,  the transferee  shall
          succeed  to the  Capital  Account of the  transferor  to the extent it
          relates to the transferred Partnership Interest.

The foregoing  provisions and the other provisions of this Agreement relating to
the  maintenance  of Capital  Accounts  are  intended  to comply  with  Sections
1.704-1(b) and 1.704-2 of the Regulations,  and shall be interpreted and applied
in a manner consistent with such  Regulations.  In the event the General Partner
shall reasonably  determine that it is prudent to modify the manner in which the
Capital  Accounts,  or  any  debits  or  credits  thereto  (including,   without
limitation,  debits or credits  relating  to  liabilities  which are  secured by
contributed or distributed  assets or which are assumed by the Partnership,  the
General  Partner or any Limited  Partner)  are  computed in order to comply with
such Regulations, the General Partner may make such modification;  provided that
it does not have an adverse effect on the amounts  distributable  to any Partner
pursuant to Article 13 hereof upon the dissolution of the Partnership.

      1.15 "CAPITAL  CONTRIBUTION" means, with respect to any Partner, any cash,
cash  equivalents  or the Gross  Asset  Value of  property  which  such  Partner
contributes or is deemed to contribute to the Partnership  pursuant to Article 4
hereof.
      1.16 "CAPITAL EVENT" means any Partnership transaction not in the ordinary
course of its  business,  including,  without  limitation,  distribution  to the
Partners  in  excess  


                                     - 4 -

<PAGE>
of distributive shares of income,  principal payments,  prepayments,  prepayment
penalties,  sales,  exchanges,  foreclosures  or other  dispositions of Property
owned by the Partnership, recoveries of damage awards and insurance proceeds not
used to rebuild (other than the receipt of  contributions  to the capital of the
Partnership and business or rental  interruption  insurance proceeds not used to
rebuild).

      1.17 "CERTIFICATE" means the Certificate of Limited  Partnership  relating
to the Partnership to be filed in the office of the Delaware Secretary of State,
as amended from time to time in accordance with the terms hereof and the Act.

      1.18 "CHANGE OF CONTROL  TRANSACTION"  shall mean (A) any  transaction  or
series of transactions  occurring after the Effective Date, in which all Limited
Partners in the Operating  Partnership  are legally  entitled to participate and
pursuant to which L.P. Units representing more than 50% of the total outstanding
L.P. Units of the Operating Partnership are purchased by a Person not controlled
by, in control of or under common control with the Company, any Affiliate of the
Company or any Affiliate of a Limited  Partner,  (B) the merger or consolidation
of the Partnership  with another entity (other than a merger or consolidation in
which the holders of L.P. Units of the Partnership immediately before the merger
or  consolidation  own  immediately  after the merger or  consolidation,  Voting
Securities  of the  surviving  or  acquiring  Entity  or a parent  party of such
surviving or acquiring  Entity,  possessing more than 50% of the voting power of
the surviving or acquiring  Entity or parent party) resulting in the exchange of
the  outstanding  L.P. Units of the  Partnership  for cash,  securities or other
property, or (C) any merger, sale, lease, license, exchange or other disposition
(whether in one  transaction or a series of related  transactions)  of more than
50% of the assets of the Partnership.

      1.19  "CHARTER"  has the  meaning  set forth in Rule 405 of  Regulation  C
promulgated by the SEC under the Securities Act ("Rule 405").

      1.20 "CODE"  means the Internal  Revenue  Code of 1986,  as amended and in
effect  from  time  to  time,  as  interpreted  by  the  applicable  regulations
thereunder.  Any reference  herein to a specific section or sections of the Code
shall be deemed to include a reference to any corresponding  provision of future
law.

      1.21  "COMMON  STOCK"  means a share of Common Stock of the Company or any
shares of Voting  Securities  into which the Common Stock may be reclassified or
converted  or  for  which  shares  of  Common  Stock  may  be  exchanged  in any
transaction  made  applicable  or  available to all holders of Common Stock as a
class.

      1.22 "COMMON  STOCK  PRICE"  means with respect to a particular  valuation
event identified under this Agreement, the last reported sales price regular way
on such date or, in case no such  reported  sale takes  place on such date,  the
average of the reported  closing bid and asked prices  regular way on such date,
in either case on the American Stock Exchange,  the New York Stock Exchange,  or
if the  Common  Stock is not then  listed or  admitted  to  trading  on any such
exchange,  the Nasdaq or any comparable system on which the Common Stock is then
listed or  admitted  to trading or, 


                                     - 5 -

<PAGE>
if not then listed or admitted to trading on any national  securities  exchange,
the Nasdaq or any  comparable  system for the  10-trading day period ending with
the last day preceding the date of the valuation event.

      1.23 "COMPANY" means Mission West  Properties,  a California  corporation,
and any successor to such corporation.

      1.24  "CONSENT"  means the consent or  approval of a proposed  action by a
Partner given in accordance with Section 14.2 hereof.

      1.25  "DEPRECIATION"  means,  with respect to any asset of the Partnership
for any fiscal year or other period, the depreciation,  depletion,  amortization
or other cost recovery  deduction,  as the case may be, allowed or allowable for
federal  income tax  purposes  in respect of such asset for such  fiscal year or
other period;  provided,  however,  that except as otherwise provided in Section
1.704-2 of the  Regulations,  if there is a  difference  between the Gross Asset
Value  (including the Gross Asset Value, as increased  pursuant to paragraph (d)
of the definition of Gross Asset Value) and the adjusted tax basis of such asset
at the  beginning  of such fiscal year or other  period,  Depreciation  for such
asset shall be an amount that bears the same ratio to the beginning  Gross Asset
Value  of  such  asset  as  the  federal  income  tax  depreciation,  depletion,
amortization  or other cost  recovery  deduction  for such  fiscal year or other
period  bears to the  beginning  adjusted  tax  basis of such  asset;  provided,
further, that if the federal income tax depreciation, depletion, amortization or
other  cost  recovery  deduction  for such asset for such  fiscal  year or other
period is zero, Depreciation of such asset shall be determined with reference to
the  beginning  Gross  Asset  Value of such asset  using any  reasonable  method
selected by the General Partner.

      1.26 "DIVIDEND REINVESTMENT PLAN" has the meaning set forth in Rule 405.

      1.27 "EFFECTIVE DATE" means the date of closing of the Berg Acquisition.

      1.28 "EMPLOYEE BENEFIT PLAN" has the meaning set forth in Rule 405.

      1.29  "ENTITY"  means  any  general   partnership,   limited  partnership,
corporation, joint venture, trust, business trust, real estate investment trust,
limited liability company, cooperative or association.

      1.30 "EQUITY SECURITY" has the meaning set forth in Rule 405.

      1.31 "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time (or any corresponding provisions of succeeding laws).

      1.32 "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.


                                     - 6 -

<PAGE>
      1.33  "EXCHANGE  FACTOR" has the meaning set forth in the Exchange  Rights
Agreement,  and is equal to the number of L.P. Units  exchangeable for one share
of Common Stock, from time to time, under the Exchange Rights Agreement.

      1.34  "EXCHANGE  RIGHT" has the meaning set forth in the  Exchange  Rights
Agreement.

      1.35 "EXCHANGE RIGHTS AGREEMENT" means the Exchange Rights Agreement among
the Company, and each of the limited partners of the partnerships comprising the
Operating Partnership.

      1.36 "GAAP" means United States generally accepted accounting  principles,
as in effect from time to time.

      1.37 "GENERAL  PARTNER" means the general partner of the  Partnership,  if
there is more than one general partner, all such general partners.

      1.38 "GENERAL PARTNER  INTEREST" means a Partnership  Interest held by the
General Partner,  in its capacity as general partner. A General Partner Interest
may be expressed as a number of Units,  each of which shall  represent  the same
Percentage Interest in the Partnership as one L.P. Unit.

      1.39  "GROSS  ASSET  VALUE"  means,  with  respect  to  any  asset  of the
Partnership, such asset's adjusted basis for federal income tax purposes, except
as follows:

     (a)  the initial Gross Asset Value of any asset contributed by a Partner to
          the  Partnership  shall be the gross fair market  value of such asset,
          without  reduction for liabilities,  as determined by the contributing
          Partner and the Partnership on the date of contribution thereof;

     (b)  if the General  Partner  reasonably  determines  that an adjustment is
          necessary or appropriate to reflect the relative economic interests of
          the Partners,  the Gross Asset Values of all Partnership  assets shall
          be adjusted in accordance with Sections  1.704-1(b)(2)(iv)(f)  and (g)
          of the Regulations to equal their respective gross fair market values,
          without  reduction for  liabilities,  as reasonably  determined by the
          General Partner, as of the following times:

          (1)  a  Capital   Contribution   (other  than  a  de  minimis  Capital
               Contribution)  to the Partnership by a new or existing Partner as
               consideration for a Partnership Interest; or

          (2)  the  distribution  by the Partnership to a Partner of more than a
               de minimis amount of Partnership  assets as consideration for the
               repurchase of a Partnership Interest; or


                                     - 7 -

<PAGE>
          (3)  the liquidation of the Partnership  within the meaning of Section
               1.704-1(b)(2)(ii)(g) of the Regulations;

     (c)  the  Gross  Asset  Values of  Partnership  assets  distributed  to any
          Partner shall be the gross fair market  values of such assets  (taking
          Section  7701(g)  of the Code  into  account)  without  reduction  for
          liabilities, as reasonably determined by the General Partner as of the
          date of distribution; and

     (d)  the Gross Asset Values of  Partnership  assets shall be increased  (or
          decreased) to reflect any  adjustments  to the adjusted  basis of such
          assets  pursuant to Sections 734(b) or 743(b) of the Code, but only to
          the extent that such adjustments are taken into account in determining
          Capital  Accounts  pursuant  to  Section  1.704-1(b)(2)(iv)(m)  of the
          Regulations  (as set forth in Appendix II);  provided,  however,  that
          Gross Asset  Values shall not be adjusted  pursuant to this  paragraph
          (d) to the extent that the General Partner reasonably  determines that
          an  adjustment  pursuant  to  paragraph  (b)  above  is  necessary  or
          appropriate  in  connection  with a transaction  that would  otherwise
          result in an adjustment pursuant to this paragraph (d).

      At all times,  Gross Asset  Values  shall be adjusted by any  Depreciation
taken into  account  with  respect to the  Partnership's  assets for purposes of
computing Net Income and Net Loss.

      1.40 "IMMEDIATE  FAMILY" means, with respect to any Person,  such Person's
spouse, parents,  parents-in-law,  children, nephews, nieces, brothers, sisters,
brothers-in-law,  sisters-in-law, stepchildren, sons-in-law and daughters-in-law
or any trust solely for the benefit of any of the foregoing family members whose
sole beneficiaries include the foregoing family members.

      1.41  "INCAPACITY"  OR  "INCAPACITATED"  means,  (i) as to any  individual
Partner,  death,  total  physical  disability  or entry by a court of  competent
jurisdiction  adjudicating  him  incompetent to manage his person or his estate;
(ii) as to any  corporation  which is a Partner,  the filing of a certificate of
dissolution,  or its  equivalent,  for the  corporation or the revocation of its
charter;  (iii) as to any  partnership  which is a Partner,  the dissolution and
commencement of winding up of the partnership;  (iv) as to any estate which is a
Partner,  the  distribution  by the fiduciary of the estate's entire interest in
the  Partnership;  (v) as to any  trustee  of a trust  which is a  Partner,  the
termination of the trust (but not the substitution of a new trustee); or (vi) as
to any Partner, the bankruptcy of such Partner. For purposes of this definition,
bankruptcy  of a Partner  shall be deemed to have  occurred when (a) the Partner
commences a voluntary  proceeding seeking  liquidation,  reorganization or other
relief under any bankruptcy, insolvency or other similar law now or hereafter in
effect;  (b) the Partner is adjudged  as bankrupt or  insolvent,  or a final and
nonappealable  order for relief under any bankruptcy,  insolvency or similar law
now or hereafter in effect has been entered against the Partner; (c) the Partner
executes  and  delivers a general  assignment  for the benefit of the  Partner's
creditors;  (d) the  Partner  files an answer  or other  pleading  admitting  or
failing to contest the  material  allegations  of a petition  filed  against the
Partner in any proceeding of the nature  described in 


                                     - 8 -

<PAGE>
clause (b) above;  (e) the  Partner  seeks,  consents  to or  acquiesces  in the
appointment  of a trustee,  receiver or liquidator for the Partner or for all or
any substantial  part of the Partner's  properties;  (f) any proceeding  seeking
liquidation, reorganization or other relief of or against such Partner under any
bankruptcy,  insolvency  or other similar law now or hereafter in effect has not
been  dismissed  within  120  days  after  the  commencement  thereof;  (g)  the
appointment without the Partner's consent or acquiescence of a trustee, receiver
or liquidator has not been vacated or stayed within 90 days of such appointment;
or (h) an  appointment  referred  to in clause (g) which has been  stayed is not
vacated within 90 days after the expiration of any such stay.

      1.42  "INDEMNITEE"  means (i) any Person made a party to a  proceeding  by
reason of (A) such Person's status as (1) the General  Partner,  (2) a director,
trustee or officer of the Partnership or the General Partner, or (3) a director,
trustee or officer of any other Entity,  each Person serving in such capacity at
the  request  of the  Partnership  or the  General  Partner,  or (B)  his or its
liabilities,  pursuant to a loan guarantee or otherwise, for any indebtedness of
the  Partnership  or any  Subsidiary  of  the  Partnership  (including,  without
limitation,  any  indebtedness  which the  Partnership  or any Subsidiary of the
Partnership has assumed or taken assets subject to); and (ii) such other Persons
(including  Affiliates of the General Partner or the Partnership) as the General
Partner  may  designate  from  time to time  (whether  before or after the event
giving rise to potential liability), in its sole and absolute discretion.

      1.43 "INITIAL CONTRIBUTED PROPERTY" means the Properties as defined in the
Acquisition Agreement.

      1.44 "LIEN" means,  with respect to any asset of the Partnership,  (i) any
mortgage,  deed of trust,  lien,  pledge,  encumbrance,  charge,  restriction or
security interest in or on such asset, (ii) the interest of a vendor or a lessor
under any conditional sale agreement, capital lease or title retention agreement
relating to such asset and (iii) in the case of securities, any purchase option,
call or similar right of a third party with respect to such securities.

      1.45  "LIMITED  PARTNER"  means any Person  named as a Limited  Partner in
Appendix  I,  as  such  Appendix  may be  amended  from  time  to  time,  or any
Substituted  Limited  Partner or Additional  Limited  Partner,  in such Person's
capacity as a Limited Partner of the Partnership.

      1.46 "LIMITED PARTNER INTEREST" means a Partnership  Interest of a Limited
Partner in the  Partnership  representing a fractional  part of the  Partnership
Interests  of all Partners and includes any and all benefits to which the holder
of such a Partnership  Interest may be entitled,  as provided in this Agreement,
together  with all  obligations  of such  Person  to  comply  with the terms and
provisions of this Agreement.  A Limited Partner  Interest may be expressed as a
number of L.P. Units.

      1.47 "LIQUIDATING EVENT" has the meaning set forth in Section 13.1 hereof.


                                     - 9 -

<PAGE>
      1.48 "LIQUIDATOR" has the meaning set forth in Section 13.2 hereof.

      1.49 "L.P.  UNIT" means a fractional,  undivided  share of the Partnership
Interests  of all  Partners  issued  pursuant to Sections  4.1, 4.2 and 4.3. The
number of L.P. Units outstanding and the Percentage Interests in the Partnership
represented by such L.P. Units are set forth in Appendix I, as such Appendix may
be amended from time to time.  The ownership of L.P. Units shall be evidenced by
such form of  certificate  for units as the General  Partner adopts from time to
time  unless  the  General  Partner  determines  that  the L.P.  Units  shall be
uncertificated securities.

      1.50 "L.P. UNIT MAJORITY" means the Limited Partners holding the right
to vote, in the aggregate, a majority of the total number of L.P. Units
outstanding in the Operating Partnership.

      1.51 "NET  INCOME"  OR "NET LOSS"  means,  for each  fiscal  year or other
applicable  period, an amount equal to the Partnership's  taxable income or loss
for such year or period as  determined  for federal  income tax  purposes by the
General  Partner,  determined in accordance with Section 703(a) of the Code (for
this purpose, all items of income, gain, loss or deduction required to be stated
separately  pursuant to Section  703(a) of the Code shall be included in taxable
income or loss),  adjusted  as  follows:  (a) by  including  as an item of gross
income any tax-exempt income received by the Partnership and not otherwise taken
into  account  in  computing  Net  Income  or Net  Loss;  (b) by  treating  as a
deductible  expense any  expenditure  of the  Partnership  described  in Section
705(a)(2)(B)  of the  Code  (or  which  is  treated  as a  Section  705(a)(2)(B)
expenditure pursuant to Section 1.704-1(b)(2)(iv)(i) of the Regulations) and not
otherwise  taken into  account in  computing  Net Income or Net Loss,  including
amounts paid or incurred to organize the Partnership (unless an election is made
pursuant to Section  709(b) of the Code) or to promote the sale of  interests in
the Partnership and by treating deductions for any losses incurred in connection
with the sale or exchange of Partnership property disallowed pursuant to Section
267(a)(1)  or  707(b)  of  the  Code  as   expenditures   described  in  Section
705(a)(2)(B)  of the Code;  (c) by taking into account  Depreciation  in lieu of
depreciation,  depletion,  amortization and other cost recovery deductions taken
into account in computing  taxable income or loss; (d) by computing gain or loss
resulting from any  disposition  of  Partnership  property with respect to which
gain or loss is recognized  for federal  income tax purposes by reference to the
Gross Asset Value of such  property  rather than its adjusted tax basis;  (e) in
the event of an  adjustment  of the Gross Asset Value of any  Partnership  asset
which requires that the Capital Accounts of the Partnership be adjusted pursuant
to Sections 1.704-1(b)(2)(iv)(e), (f) and (g) of the Regulations, by taking into
account  the  amount  of  such  adjustment  as if  such  adjustment  represented
additional Net Income or Net Loss pursuant to Appendix II; and (f) by not taking
into account in computing Net Income or Net Loss items  separately  allocated to
the Partners pursuant to Sections 1 and 2 of Appendix II.

      1.52 "NEW  EQUITY  FINANCING  RIGHT" has the  meaning set forth in Section
8.8.


                                     - 10 -

<PAGE>
      1.53  "NONRECOURSE  DEDUCTIONS"  has the meaning set forth in  Regulations
Sections 1.704-2(b)(1) and 1.704-2(c).

      1.54  "NONRECOURSE  LIABILITIES"  has the meaning set forth in Regulations
Section 1.704-2(b)(3).

      1.55 "OPERATING PARTNERSHIP" means, collectively, Mission West
Properties, L.P., Mission West Properties, L.P. I, Mission West Properties,
L.P. II and Mission West Properties, L.P. III.

      1.56  "PARTNER"  means  the  General  Partner  or a Limited  Partner,  and
"Partners" means the General Partner and the Limited Partners collectively.

      1.57 "PARTNER MINIMUM GAIN" means an amount,  with respect to each Partner
Nonrecourse  Debt,  equal to the  Partnership  Minimum Gain that would result if
such  Partner  Nonrecourse  Debt  were  treated  as  a  Nonrecourse   Liability,
determined in accordance with Regulations Section 1.704-2(i)(3).

      1.58 "PARTNER  NONRECOURSE  DEBT" has the meaning set forth in Regulations
Section 1.704-2(b)(4).

      1.59  "PARTNER  NONRECOURSE  DEDUCTIONS"  has the  meaning  set  forth  in
Regulations  Section  1.704-2(i)(2),  and  the  amount  of  Partner  Nonrecourse
Deductions with respect to a Partner  Nonrecourse Debt for a Partnership taxable
year shall be  determined in accordance  with the rules of  Regulations  Section
1.704-2(i)(2).

      1.60  "PARTNERSHIP"  means  the  limited  partnership   governed  by  this
Agreement, and any successor thereto.

      1.61 "PARTNERSHIP INTEREST" means an ownership interest in the Partnership
representing an Adjusted Contribution by either a Limited Partner or the General
Partner  and  includes  any and all  benefits  to  which  the  holder  of such a
Partnership  Interest  may be entitled as provided in this  Agreement,  together
with all  obligations  of such Person to comply with the terms and provisions of
this  Agreement.  A  Partnership  Interest  may be expressed as a number of L.P.
Units.

      1.62  "PARTNERSHIP  MINIMUM GAIN" has the meaning set forth in Regulations
Section  1.704-2(b)(2),  and the amount of Partnership  Minimum Gain, as well as
any net increase or decrease in a Partnership  Minimum  Gain,  for a Partnership
taxable year shall be  determined in  accordance  with the rules of  Regulations
Section 1.704-2(d).

      1.63  "PARTNERSHIP  RECORD DATE" means the record date  established by the
General Partner for the  distribution of Available Cash pursuant to Section 5.1,
which  shall be the same as the record  date  established  by the  Company for a
distribution  to  its  shareholders  of  some  or all of  its  portion  of  such
distribution.


                                     - 11 -

<PAGE>
      1.64 "PARTNERSHIP YEAR" means the fiscal year of the Partnership, which is
the calendar year, as set forth in Section 9.2.

      1.65  "PENDING  DEVELOPMENT  PROJECTS"  means three Berg  Group-owned  R&D
Property  development  projects  which the Operating  Partnership  has agreed to
acquire upon their completion pursuant to the terms of the Acquisition Agreement
and the related Pending Projects Option Agreement to entered into by the parties
thereto upon approval of certain transactions by the Company's shareholders.

      1.66 "PARTNERSHIP INTEREST" means, as to a Partner, the fractional part of
the Partnership Interests owned by such Partner and expressed as a percentage as
specified in Appendix I, as such Appendix may be amended from time to time.

      1.67  "PERMITTED  PARTNERS"  has the meaning set forth in Section  1(b) of
Appendix II.

      1.68  "PERMITTED  TRANSFEREE"  means any  person  to whom  L.P.  Units are
Transferred in accordance with Section 11.3 of this Agreement.

      1.69 "PERSON" means an individual or Entity.

      1.70  "PRECONTRIBUTION  GAIN" has the meaning set forth in Section 3(c) of
Appendix II.

      1.71 "PUT RIGHTS" shall have the meaning provided in Section 8.7.

      1.72 "PROTECTIVE  PROVISIONS  EXPIRATION DATE" means the date on which the
members of the Berg Group own less than 15% of the Common  Stock,  treating  all
Equity  Securities  of the Company and all L.P.  Units owned by such  members as
Common Stock outstanding for this purpose.

      1.73  "PROPERTIES"  has the  meaning  given  such term in the  Acquisition
Agreement.

      1.74  "QUARTER"  means each of the three month periods ending on March 31,
June 30, September 30 and December 31.
      1.75  "REGULATIONS"  means the final,  temporary  or  proposed  Income Tax
Regulations  promulgated under the Code, as such regulations may be amended from
time to time (including corresponding provisions of succeeding regulations).

      1.76 "REIT" means a real estate investment trust as defined in Section 856
of the Code.

      1.77 "REIT REQUIREMENTS"  means all of the requirements  imposed under the
Code on any entity seeking to qualify and remain qualified as a REIT.


                                     - 12 -

<PAGE>
      1.78  "RESTRICTED  PARTNER"  has the meaning set forth in Section  1(b) of
Appendix II.

      1.79 "SEC" means the U.S. Securities and Exchange Commission.

      1.80 "SECURITIES ACT" means the Securities Act of 1933, as amended.

      1.81 "STOCK  OPTION PLAN" means the  Company's  1997 Stock Option Plan and
any other plan adopted from time to time by the Company pursuant to which shares
of Common  Stock are issued,  or options to acquire  shares of Common  Stock are
granted,  to  consultant,  employees or directors of the Company,  the Operating
Partnership  or their  respective  Affiliates in  consideration  for services or
future services.

      1.82  "SUBSIDIARY"  means,  with respect to any Person,  any  corporation,
partnership  or other  entity of which a majority of (i) the voting power of the
Voting Securities;  or (ii) the outstanding equity interests, is owned, directly
or indirectly, by such Person.

      1.83  "SUBSTITUTED  LIMITED  PARTNER"  means a Person who is admitted as a
Limited Partner to the Partnership pursuant to Section 11.4 hereof.

      1.84 "TAX ITEMS" has the meaning set forth in Appendix II.

      1.85 "TERMINATING CAPITAL TRANSACTION" means any Change of Control
Transaction.

      1.86  "TOTAL  MARKET   CAPITALIZATION"  means  the  market  value  of  the
outstanding  Common  Stock  determined  as if all L.P.  Units  in the  Operating
Partnership had been converted into Common Stock at the Exchange Factor plus the
total debt of the Company and the Operating Partnership.

      1.87 "TRANSFER" as a noun, means any sale, assignment, conveyance, pledge,
hypothecation,  gift,  encumbrance or other  transfer,  and as a verb,  means to
sell, assign, convey, pledge, hypothecate, give, encumber or otherwise transfer.

      1.88 "UNIT" means an equal  undivided  interest in all of the  outstanding
Partnership Interests.

      1.89  "UNITED  STATES  PERSON"  means a  holder  of L.P.  Units  who is an
individual  who is a citizen or resident of the United  States;  a  corporation,
partnership  or other entity  created or organized in, or under the laws of, the
United States or any State;  an estate the income of which from sources  without
the United States is includable in gross income for United States federal income
tax purposes; a trust the primary supervision of which is exercisable by a court
within the United States and having one or more United States  fiduciaries  with
authority to control all  substantial  decisions  of such trust;  and any 


                                     - 13 -

<PAGE>
Person  whose  income  or gain in  respect  of the  L.P.  Units  is  effectively
connected with the conduct of a United States trade or business.

      1.90 "VOTING  SECURITIES"  means any Equity  Security  which  entitles the
holder thereof to vote on all matters  submitted for a vote of equity holders by
the issuer of such Equity Security, including the right to vote for directors in
the case of a corporation.

      Certain  additional  terms  and  phrases  have the  meanings  set forth in
Appendix II.

ARTICLE 2. ORGANIZATIONAL MATTERS.

      2.1  CONTINUATION.  The Partners  hereby agree to continue the Partnership
under and  pursuant  to the Act.  Except  as  expressly  provided  herein to the
contrary,  the rights and obligations of the Partners and the administration and
termination  of the  Partnership  shall be governed by the Act. The  Partnership
Interest of each Partner shall be personal property for all purposes.

      2.2 NAME. The name of the  Partnership  shall be Mission West  Properties,
L.P. [ ]. The  Partnership's  business may be conducted  under any other name or
names deemed advisable by the General Partner, including the name of the General
Partner or any  Affiliate  thereof.  The words  "Limited  Partnership,"  "L.P.,"
"Ltd." or similar words or letters shall be included in the  Partnership's  name
where necessary to comply with the laws of any jurisdiction. The General Partner
in its sole and absolute  discretion  may, upon 5 days' prior written  notice to
the Limited Partners, change the name of the Partnership.

      2.3  REGISTERED  OFFICE AND AGENT;  PRINCIPAL  OFFICE.  The address of the
registered  office of the  Partnership in the State of Delaware and the name and
address of the registered agent for service of process on the Partnership in the
State  of  Delaware  is The  Corporation  Trust  Company,  1029  Orange  Street,
Wilmington,  Delaware 19801.  The principal  office of the Partnership  shall be
10050 Bandley Drive,  Cupertino,  California  95014,  or such other place as the
General  Partner  may from  time to time  designate  by  notice  to the  Limited
Partners.  The  Partnership  may maintain  offices at such other place or places
within or outside the State of Delaware as the General Partner deems advisable.

      2.4  POWER OF ATTORNEY.

     A.   Each Limited Partner and each Assignee hereby constitutes and appoints
          the General  Partner,  any  Liquidator,  and  authorized  officers and
          attorneys-in-fact  of each, and each of those acting  singly,  in each
          case with full power of substitution, as its true and lawful agent and
          attorney-in-fact, with full power and authority in its name, place and
          stead to:

          (1)  execute,  swear to, acknowledge,  deliver, file and record in the
               appropriate  public offices (a) all  certificates,  documents and
               other instruments (including,  without limitation, this Agreement
               and the Certificate  and all


                                     - 14 -

<PAGE>
               amendments or  restatements  thereof) that the General Partner or
               the Liquidator deems  appropriate  or necessary to form,  qualify
               or continue the  existence or qualification of the Partnership as
               a  limited  partnership  (or a partnership  in which the  Limited
               Partners have limited  liability) in the State of Delaware and in
               all other  jurisdictions  in which the  Partnership  may or plans
               to  conduct   business  or  own  property,   including,   without
               limitation,  any documents necessary  or  advisable to convey any
               Contributed Property to the Partnership; (b) all instruments that
               the General Partner deems appropriate or necessary to reflect any
               amendment, change, modification or restatement of this  Agreement
               in accordance  with  its  terms;  (c) all conveyances  and  other
               instruments  or  documents  that  the   General  Partner  or  the
               Liquidator  deems  appropriate   or   necessary  to  reflect  the
               dissolution  and liquidation of the  Partnership  pursuant to the
               terms  of  this  Agreement,   including,  without  limitation,  a
               certificate of cancellation; (d)  all instruments relating to the
               admission,  withdrawal,  removal or  substitution of any  Partner
               pursuant to, or other events described  in, Article 11, 12 or 13,
               or  the  Capital  Contribution  of  any  Partner;  and  (e)   all
               certificates,  documents and  other  instruments  relating to the
               determination  of  the  rights,  preferences  and  privileges  of
               Partnership Interest; and

          (2)  execute,  swear  to,  seal,  acknowledge  and file  all  ballots,
               consents,  approvals, waivers, certificates and other instruments
               appropriate or necessary,  in the sole and absolute discretion of
               the General Partner or any Liquidator,  to make, evidence,  give,
               confirm or ratify any vote, consent, approval, agreement or other
               action  which is made or given by the  Partners  hereunder  or is
               consistent  with the terms of this  agreement or  appropriate  or
               necessary,  in the sole  discretion of the General Partner or any
               Liquidator, to effectuate the terms or intent of this Agreement.

      Nothing  contained  herein shall be construed as  authorizing  the General
Partner or any  Liquidator to amend this  Agreement  except in  accordance  with
Article 14, or as may be otherwise expressly provided for in this Agreement.

     B.   The foregoing  power of attorney is hereby  declared to be irrevocable
          and a power coupled with an interest,  in recognition of the fact that
          each of the  Partners  will be relying  upon the power of the  General
          Partner and any Liquidator to act as contemplated by this Agreement in
          any filing or other action by it on behalf of the Partnership,  and it
          shall survive and not be affected by the subsequent  Incapacity of any
          Limited  Partner or Assignee and the Transfer of all or any portion of
          such Limited  Partner's or Assignee's  L.P.  Units and shall extend to
          such Limited  Partner's or Assignee's heirs,  successors,  assigns and
          personal representatives. Each such Limited Partner or Assignee hereby
          agrees to be bound by any  representation  made by the General Partner
          or any  Liquidator,  acting in good  faith  pursuant  to such power of
          attorney,  and each such Limited Partner or Assignee hereby waives any
          and  all  defenses  which  may be  available  to  contest,  negate  or
          disaffirm the action of the General Partner or any  Liquidator,  taken
          in good faith under such power of attorney.  Each  Limited  Partner or
          Assignee  shall  execute  and  deliver to the  General  Partner or


                                     - 15 -

<PAGE>
          the Liquidator,  within 15 days after receipt of the General Partner's
          or Liquidator's request therefor, such further designation,  powers of
          attorney  and  other  instruments  as  the  General   Partner  or  the
          Liquidator,  as the case may be, deems  necessary  to effectuate  this
          Agreement  and  the  purposes  of  the Partnership.

      2.5 TERM.  The term of the  Partnership  shall commence on the date hereof
and shall continue until December 31, 2048,  unless the Partnership is dissolved
sooner pursuant to the provisions of Article 13 or as otherwise provided by law.

ARTICLE 3. PURPOSE.

      3.1 PURPOSE  AND  BUSINESS.  The purpose and nature of the  business to be
conducted by the  Partnership  is to conduct any  business  that may be lawfully
conducted  by a limited  partnership  organized  pursuant to the Act  including,
without limitation,  to engage in the following  activities:  to acquire,  hold,
own, develop,  construct,  improve,  maintain,  operate,  sell, lease, transfer,
encumber,   convey,  exchange,  and  otherwise  dispose  of  or  deal  with  the
Properties,  and the  Pending  Development  Projects;  to  acquire,  hold,  own,
develop, construct, improve, maintain, operate, sell, lease, transfer, encumber,
convey,  exchange,  and  otherwise  dispose  of or deal with  real and  personal
property of all kinds;  to undertake such other  activities as may be necessary,
advisable,  desirable or convenient to the business of the  Partnership;  and to
engage in such other ancillary  activities as shall be necessary or desirable to
effectuate the foregoing purposes.

      3.2 POWERS. The Partnership is empowered to do any and all acts and things
necessary,  appropriate,  proper, advisable, incidental to or convenient for the
furtherance  and  accomplishment  of the  purposes and business for which it has
been formed and for the  protection  and benefit of the  Partnership;  provided,
that the Partnership  shall not take, and shall refrain from taking,  any action
which,  in the  judgment  of the  General  Partner,  in its  sole  and  absolute
discretion, (i) could adversely affect the ability of the Company to continue to
qualify as a REIT; (ii) could subject the Company to any additional  taxes under
Section  857 or Section  4981 of the Code;  or (iii)  could  violate  any law or
regulation  of any  governmental  body or agency  having  jurisdiction  over the
Company or its  securities,  unless  such action (or  inaction)  shall have been
specifically  consented to by the Company,  if not the General Partner,  and the
L.P. Unit Majority.

ARTICLE 4. CAPITAL CONTRIBUTIONS.

      4.1  CAPITAL CONTRIBUTIONS OF THE PARTNERS.

     A.   At the time of the execution of this Agreement, the Partners have made
          the Adjusted  Contributions,  or shall make the Capital  Contributions
          contemplated by the Acquisition Agreement,  as set forth in Appendix I
          to this  Agreement.  Each Limited  Partner shall own L.P. Units in the
          amount  set forth for such  Partner  in  Appendix  I and shall  have a
          Percentage  Interest  in the  Partnership  as set forth in Appendix I,
          which shall be adjusted in Appendix I from time to time by the General
          Partner  to the extent


                                     - 16 -

<PAGE>
          necessary  to  reflect   accurately  exchanges,   additional   Capital
          Contributions,   the  issuance  of   additional Partnership Interests,
          the  exercise of  Put Rights  with respect to L.P.  Units  or  similar
          events having an effect on any Partner's  Percentage Interest.

     B.   The number of Units held by the General  Partner,  in its  capacity as
          general partner,  shall be deemed to be the General Partner  Interest.
          Except as provided in Sections 4.2, 10.5 and 13.3,  the Partners shall
          have no obligation to make any additional Capital Contributions.

      4.2  ADDITIONAL FUNDS; RESTRICTIONS ON COMPANY.

     A.   The sums of money  required to finance the business and affairs of the
          Partnership  shall be derived from the initial  Capital  Contributions
          made to the Partnership by the Company as set forth in the Acquisition
          Agreement and from funds  generated from the operation and business of
          the Partnership including, without limitation,  distributions directly
          or indirectly received by the Partnership from Available Cash provided
          by the Operating  Partnership.  In the event  additional  financing is
          needed from sources other than as set forth in the preceding  sentence
          for any reason, subject to the provisions of Sections 8.8 and 8.9, the
          General  Partner may, in its  discretion,  in such amounts and at such
          times as it solely shall  determine  to be  necessary or  appropriate,
          obtain  additional funds for the Operating  Partnership which shall be
          allocated to each of the partnerships included therein,  including the
          Partnership,  pro rata in  proportion  to the  ratio of the  number of
          Units then outstanding in each such Partnership to the total number of
          L.P. Units then  outstanding in the Operating  Partnership  taken as a
          whole ("Pro Rata Share").  Accordingly, to the extent of such Pro Rata
          Share of the  Partnership  and  subject to  Section  8.9 and any other
          limitations contained in this Agreement or the Acquisition  Agreement,
          the General Partner may, (i) cause the Partnership to issue additional
          Partnership  Interests and admit  additional  Limited  Partners to the
          Partnership  in  accordance  with  Section 4.3;  (ii) make  additional
          Capital Contributions to the Partnership (subject to the provisions of
          Section 4.2B); (iii) cause the Partnership to borrow money, enter into
          loan arrangements,  issue debt securities, obtain letters of credit or
          otherwise  borrow money on a secured or unsecured  basis; or (iv) make
          loans to the Partnership  (subject to Section 4.2B). In no event shall
          the  Limited  Partners  be  required  to make any  additional  Capital
          Contributions  or any loan to,  or  otherwise  provide  any  financial
          accommodation for the benefit of, the Partnership pursuant to any such
          permitted action by the General  Partner,  except insofar as a Limited
          Partner  has  exercised  its New Equity  Financing  Right  pursuant to
          Section 8.8.

     B.   Except as agreed  otherwise at the time by vote or written  consent of
          the L.P. Unit Majority:  (i) the Company shall lend to the Partnership
          its Pro Rata Share of the proceeds of or consideration received by the
          Company  from all loans and  advances to the  Company  pursuant to any
          financial  borrowing  arrangement  on the  same  financial  terms  and
          conditions,  including interest rate and repayment schedule,  as shall
          be  applicable  with  respect to or  incurred in  connection  with the
          issuance  of  such  loans  and  advances  to the  Company  (which  the
          Partnership may, in turn, lend to any other


                                     - 17 -

<PAGE>
          partnership constituting part of the Operating Partnership);  (ii)  in
          the case of Equity Securities senior or junior to the  Common Stock as
          to  dividends  and   distributions  on   liquidation,  which  are  not
          convertible  into  Common Stock as of the issuance  date,  the Company
          shall  contribute to the Partnership the proceeds of or  consideration
          (including  any property or other non-cash assets)  received  for such
          Securities and the proceeds of,  or consideration  received from,  any
          subsequent exercise, exchange or  conversion thereof  (if applicable),
          and shall receive from the  Partnership, new Partnership  Interests in
          the Partnership  in  consideration  therefor  with the same  financial
          terms  and   conditions,   including  dividend,   dividend   priority,
          liquidation   preference, conversion  and  redemption  rights,  as are
          applicable to such Equity  Securities;  (iii)  in  the case o f Common
          Stock,  or other Equity Securities convertible into Common Stock as of
          the  issuance  date, including, without limitation,  shares of  Common
          Stock or  other  Equity  Securities  issued upon  exercise of  options
          issued  under the Stock Option Plan or any other Employee Benefit Plan
          of the  Company,  the Company  shall  contribute  to  the  Partnership
          the  proceeds  of or consideration  (including  any property  or other
          non-cash  assets) received for such  Securities  and the  proceeds of,
          or  consideration received from,  any subsequent exercise, exchange or
          conversion  thereof  (if  applicable),  and  shall  receive  from  the
          Partnership a number of additional Units of General  Partner  Interest
          in consideration therefor equal to the  product of  (x) the  number of
          shares of Common  Stock  or  other Equity  Securities  issued  by  the
          Company,  multiplied by (y) the  Exchange Factor in effect on the date
          of such  contribution;  and (iv) in the case of  Common Stock or other
          Equity Securities  issued upon the exercise  or  surrender  of  rights
          under  a  stock option,  warrant,  or any  other right for  which  the
          company  does not  receive  proceeds,  and issues less than the number
          of shares of Common  Stock or other Equity Securities  subject to such
          option,  warrant  or other  right to the holder  thereof retaining the
          excess  of such  shares  as payment  of the  purchase  price  (a  "net
          exercise"),  or where the Company  uses the proceeds received pursuant
          to a Dividend  Reinvestment Plan to acquire shares of Common Stock or
          other Equity  Securities  to be issued to  the shareholder  exercising
          such right, the Company shall receive from the Partnership a number of
          additional Units of  General  Partner  Interest equal  to  the  actual
          number of shares of Common  Stock or other Equity Securities so issued
          to the shareholder  multiplied  by the Exchange Factor.

      4.3 ISSUANCE OF ADDITIONAL PARTNERSHIP INTERESTS;  ADMISSION OF ADDITIONAL
LIMITED  PARTNERS.  In addition  to any  Partnership  Interests  issuable by the
Partnership  pursuant to Section 4.2, and subject to the  provisions of Sections
8.8 and 8.9, the General Partner is authorized to cause the Partnership to issue
additional Partnership Interests (or options therefor) in the form of L.P. Units
or other Partnership Interests senior or junior to the L.P. Units to any Persons
at any time or from  time to time,  for  consideration  per Unit of  Partnership
Interest not less than the Common Stock Price determined at the initial issuance
date divided by the Exchange Factor, and on such other terms and conditions,  as
the General Partner shall establish provided, however, that (i) each partnership
included in the  Operating  Partnership  shall effect its Pro Rata Share of such
issuance,  (ii) such issuance  does not cause the  Partnership  to become,  with
respect to any Employee Benefit Plan subject to Title I of ERISA or Section 4975
of the Code, a "party in interest"  (as defined in Section  3(14) of ERISA) or


                                     - 18 -

<PAGE>
a "disqualified  person" (as defined in Section 4975(e) of the Code);  and (iii)
such  issuance  does not cause any portion of the assets of the  Partnership  to
constitute assets of any Employee Benefit Plan subject to Section  2510.3-101 of
the  regulations  of the  United  States  Department  of Labor.  Subject  to the
limitations  set forth in the preceding  sentence,  the General Partner may take
such steps as it, in its reasonable  discretion,  deems necessary or appropriate
to admit any Person as a Limited Partner of the Partnership,  including, without
limitation, amending the Certificate,  Appendix I or any other provision of this
Agreement.

      4.4  REPURCHASE  OF COMPANY  EQUITY  SECURITIES.  In the event the Company
shall elect to purchase  from its  shareholders  shares of Common  Stock for the
purpose of delivering  such shares to satisfy an  obligation  under any Dividend
Reinvestment  Plan or Employee  Benefit Plan  adopted by the  Company,  or shall
repurchase  any other  Equity  Securities  of the Company  pursuant to any other
share  repurchase  obligation or arrangement  undertaken by the Company with any
Company shareholder,  including preferred stock redemptions,  the purchase price
paid by the  Company  for such  shares and any other  expenses  incurred  by the
Company in  connection  with such purchase  shall be considered  expenses of the
Partnership  and shall be  reimbursed  to the Company,  subject to the condition
that: (i) if such shares subsequently are to be sold by the Company, the Company
shall pay to the  Partnership  any  proceeds  received  by the  Company for such
shares of Common Stock or other Equity Securities  (provided that an exchange of
shares of Common Stock for L.P. Units pursuant to the Exchange Rights  Agreement
would not be considered a sale for such  purposes);  and (ii) if such shares are
not re-transferred by the Company within 30 days after the purchase thereof, the
General  Partner  shall cause the  Partnership  to cancel the number of Units of
General Partner  Interest held by the Company  determined by multiplying (x) the
quotient obtained by dividing the total amount deemed paid by the Partnership by
the Common Stock Price determined as of the repurchase date, by (y) the Exchange
Factor in effect on the date of such repurchase.

      4.5 NO THIRD PARTY  BENEFICIARY.  No creditor or other third party  having
dealings  with the  Partnership  shall  have the right to  enforce  the right or
obligation  of any Partner to make Capital  Contributions  or loans or to pursue
any other right or remedy hereunder or at law or in equity,  it being understood
and agreed that the provisions of this Agreement shall be solely for the benefit
of,  and may be  enforced  solely by, the  parties  hereto and their  respective
successors and assigns.

      4.6 NO INTEREST;  NO RETURN.  No Partner  shall be entitled to interest on
its  Capital  Contribution  or on such  Partner's  Capital  Account.  Except  as
provided in Section 8.7 or Article 13 of this  Agreement,  or by law, no Partner
shall have any right to demand or receive the return of its Capital Contribution
from the Partnership.

ARTICLE 5. DISTRIBUTIONS.

      5.1 REGULAR  DISTRIBUTIONS.  Except for distributions  pursuant to Section
13.2 in connection with the dissolution and liquidation of the Partnership,  and
subject to the  provisions  of Sections  5.3, 5.4 and 5.5,  the General  Partner
shall cause the  Partnership


                                     - 19 -


<PAGE>
to distribute,  from time to time as determined by the General  Partner,  but in
any event not less frequently than once each Quarter, the Partnership's Pro Rata
Share of all Available Cash, to the Partners,  in accordance with each Partner's
respective  Percentage  Interest;  provided,  however,  that in no  event  may a
Limited  Partner receive a distribution of Available Cash with respect to a L.P.
Unit, if such Limited Partner is entitled to receive a distribution  out of such
Available  Cash with respect to a share of Common Stock for which such L.P. Unit
has been exchanged.

      5.2  QUALIFICATION  AS A REIT.  The General  Partner  shall be entitled to
cause the Partnership to distribute to the General Partner the Partnership's Pro
Rata Share of Available Cash distributed by the Operating  Partnership to enable
the General Partner to pay shareholder  dividends that will (i) satisfy the REIT
Requirements  for  distributions  to  shareholders,  and (ii) avoid any  federal
income or excise tax liability of the General Partner;  provided,  however,  the
General  Partner is not bound to comply  with this  covenant  to the extent such
distributions would violate applicable Delaware law.

      5.3 WITHHOLDING.  With respect to any withholding tax or other similar tax
liability or obligation to which the  Partnership  may be subject as a result of
any act or status of any  Partner or to which the  Partnership  becomes  subject
with  respect to any Unit,  the  Partnership  shall  have the right to  withhold
amounts of Available Cash  distributable to such Partner or with respect to such
Units, to the extent of the amount of such  withholding tax or other similar tax
liability or obligation pursuant to the provisions contained in Section 10.5.

      5.4  ADDITIONAL   PARTNERSHIP   INTERESTS.   If  the  Partnership   issues
Partnership  Interests in accordance  with Section 4.2 or 4.3 which are entitled
to certain distribution priorities,  Section 5.1 shall be amended, as necessary,
to  reflect  the  distribution   priority  of  such  Partnership  Interests  and
corresponding amendments shall be made to the provisions of Appendix II.

      5.5 DISTRIBUTIONS  UPON LIQUIDATION.  Proceeds from a Terminating  Capital
Transaction  and any other cash  received or  reductions  in reserves made after
commencement of the  liquidation of the Partnership  shall be distributed to the
Partners in accordance with Section 13.2.

ARTICLE 6. ALLOCATIONS.

      The Net Income,  Net Loss, and other  Partnership  items of income,  gain,
loss,  deduction  or credit as  provided  under  the  Code,  shall be  allocated
pursuant to the provisions of Appendix II, as amended from time to time.

ARTICLE 7. MANAGEMENT AND OPERATION OF BUSINESS.

      7.1  MANAGEMENT.

     A.   Except as otherwise expressly provided in this Agreement,  and subject
          to the  provisions  of Section  8.9,  all  management  powers over the
          business  and affairs  the


                                     - 20 -

<PAGE>
          Partnership  are  and  shall  be  exclusively  vested  in the  General
          Partner, and no Limited Partner shall have any right to participate in
          or exercise  control or management power over the business and affairs
          of the  Partnership.  The  General  Partner  may not be removed by the
          Limited Partners, with or without cause. In addition to the powers now
          or hereafter granted a general partner of a limited  partnership under
          the Act or which are  granted to the General  Partner  under any other
          provision of this Agreement, the General Partner shall have full power
          and authority to make contracts,  sign documents,  conduct litigation,
          acquire  and  convey   property,   hire  employees,   consultants  and
          professionals,  raise capital, borrow funds, incur liabilities, invest
          funds, comply with all applicable laws, and do all other things deemed
          necessary or desirable by the General  Partner to conduct the business
          of the  Partnership  on behalf of the  Partnership;  to  exercise  all
          powers set forth in Section  3.2, and to  effectuate  the purposes set
          forth in Section  3.1,  provided  that any  exercise of the  foregoing
          rights and powers must be consistent with the REIT Requirements.

     B.   Except as provided in Section 8.9, each of the Limited Partners agrees
          that the General Partner is authorized to execute, deliver and perform
          the agreements and  transactions on behalf of the Partnership  without
          any further act, approval or vote of the Partners, notwithstanding any
          other  provision  of this  Agreement to the fullest  extent  permitted
          under  the  Act or  other  applicable  law,  rule or  regulation.  The
          execution,  delivery  or  performance  by the  General  Partner or the
          Partnership  of any  agreement  authorized  or  permitted  under  this
          Agreement  shall not constitute a breach by the General Partner of any
          duty that the General  Partner may owe the  Partnership or the Limited
          Partners  or any other  Persons  under this  Agreement  or of any duty
          stated or implied by law or equity.

     C.   At all times from and after the date hereof,  in  accordance  with the
          provisions of the Acquisition Agreement, the General Partner may cause
          the Partnership to establish and maintain at any and all times working
          capital  accounts and other cash or similar balances in such amount as
          the  General  Partner,  in its sole  and  absolute  discretion,  deems
          appropriate  and  reasonable  from  time to time.  Such  accounts  may
          include funds of the General Partner and the other partnerships in the
          Operating  Partnership,  which the  General  Partner  shall be free to
          commingle.

     D.   In exercising its authority under this Agreement,  the General Partner
          shall take into  account  the tax  consequences  to any Partner of any
          action taken by it and shall select the  alternative  which appears at
          the time to present the least adverse tax  consequences to the Limited
          Partners.  By way of example,  but not of  limitation:  If the General
          Partner decides to refinance  (directly or indirectly) any outstanding
          indebtedness  of  the  Partnership,  the  General  Partner  shall  use
          reasonable  efforts to  structure  such  refinancing  in a manner that
          minimizes  any adverse tax


                                     - 21 -

<PAGE>

          consequences  resulting therefrom to the Limited Partners. The General
          Partner  and the  Partnership  shall not have  liability  to a Limited
          Partner under any circumstances as a result of an income tax liability
          incurred by such Limited Partner as a result of a necessary action (or
          inaction) by the General Partner taken pursuant to its authority under
          and in accordance  with this  Agreement  where  avoiding the resulting
          adverse  tax  consequences  to a Limited  Partner  was not  reasonably
          practicable under the circumstances.

      7.2 CERTIFICATE OF LIMITED PARTNERSHIP. The General Partner shall file the
[AMENDED  CERTIFICATE]  [CERTIFICATE] with the Secretary of State of Delaware as
required by the Act. The General  Partner  shall use all  reasonable  efforts to
cause to be filed such other  certificates or documents as may be reasonable and
necessary or appropriate  for the  formation,  continuation,  qualification  and
operation  of a limited  partnership  (or a  partnership  in which  the  limited
partners  have limited  liability) in the State of Delaware and any other state,
or the District of Columbia,  in which the  Partnership may elect to do business
or own  property.  To the extent that such action is  determined  by the General
Partner to be reasonable and necessary or appropriate, the General Partner shall
file amendments to and  restatements of the Certificate and do all of the things
to maintain the Partnership as a limited  partnership (or a partnership in which
the limited  partners  have  limited  liability)  under the laws of the State of
Delaware  and each  other  state,  or the  District  of  Columbia,  in which the
Partnership  may elect to do business or own  property.  Subject to the terms of
Section  8.5A(iv) hereof,  the General Partner shall not be required,  before or
after  filing,  to deliver or mail a copy of the  Certificate  or any  amendment
thereto to any Limited Partner.

      7.3  REIMBURSEMENT OF THE GENERAL PARTNER AND THE COMPANY.

      A. Except as provided in this Section 7.3 and elsewhere in this  Agreement
(including the provisions of Articles 5 and 6 regarding distributions, payments,
and  allocations to which it may be entitled),  the General Partner shall not be
compensated for its services as general partner of the Partnership.

      B. The General  Partner,  shall be reimbursed on a monthly basis,  or such
other basis as it may  determine  in its sole and absolute  discretion,  for all
expenses  that it incurs  relating to the ownership and operation of, or for the
benefit of, the Partnership; provided, that the amount of any such reimbursement
shall be reduced by any interest  earned by the General  Partner with respect to
bank  accounts or other  instruments  or accounts  held by it in its name.  Such
reimbursement  shall be in  addition  to any  reimbursement  made as a result of
indemnification pursuant to Section 7.6.

      7.4 OUTSIDE  ACTIVITIES OF THE GENERAL PARTNER.  The General Partner shall
not  directly or  indirectly  enter into or conduct any  business  other than in
connection  with the  ownership,  acquisition,  development  and  disposition of
Partnership Interests and the management of the business of the Partnership, and
such  activities  as  are  incidental  thereto.  The  General  Partner  and  any
Affiliates  of the General  Partner may acquire  Limited  Partner  Interests and
shall be entitled to exercise all rights of a Limited  Partner  relating to such
Limited Partner Interests.

      7.5  CONTRACTS WITH AFFILIATES.

     A.   The  Partnership  may lend or contribute  funds or other assets to its
          Subsidiaries or other Persons in which it has an equity investment and
          such  Persons


                                     - 22 -

<PAGE>
          may  borrow  funds  from  the  Partnership,  on terms  and  conditions
          established  in the  sole  and  absolute  discretion  of  the  General
          Partner. The foregoing authority shall not create any right or benefit
          in favor of any Subsidiary or any other Person.

     B.   Except as provided in Section 7.4, the Partnership may Transfer assets
          to joint ventures, other partnerships,  corporations or other business
          entities  in which it is or thereby  becomes a  participant  upon such
          terms and subject to such  conditions  consistent  with this Agreement
          and  applicable law as the General  Partner,  in its sole and absolute
          discretion, believes are advisable.

     C.   Except  as  expressly   permitted  by  this   Agreement  or  otherwise
          contemplated by the Acquisition Agreement, neither the General Partner
          nor any of its Affiliates shall sell,  Transfer or convey any property
          to, or  purchase  any  property  from,  the  Partnership,  directly or
          indirectly, except pursuant to transactions that are determined by the
          General Partner in good faith to be fair and reasonable.

     D.   Except as provided  otherwise in Section 8.9, the General Partner,  in
          its sole and  absolute  discretion  and  without  the  approval of the
          Limited Partners, may propose and adopt, on behalf of the Partnership,
          Employee  Benefit Plans funded by the  Partnership  for the benefit of
          employees of the General Partner, the Partnership, Subsidiaries of the
          Partnership  or any  Affiliate  of any of them in respect of  services
          performed, directly or indirectly, for the benefit of the Partnership,
          the General Partner, or any Subsidiaries of the Partnership.

     E.   The General Partner is expressly authorized to enter into, in the name
          and on behalf of the  Partnership,  a "right of first  opportunity" or
          "right of first offer"  arrangement,  non-competition  agreements  and
          other conflict  avoidance  agreements  with various  Affiliates of the
          Partnership  and the  General  Partner,  on such terms as the  General
          Partner, in its sole and absolute discretion, believes are advisable.

      7.6  INDEMNIFICATION.

     A.   To the fullest extent permitted by Delaware law, the Partnership shall
          indemnify each Indemnitee from and against any and all losses, claims,
          damages, liabilities,  joint or several, expenses (including,  without
          limitation,  reasonable  attorneys'  fees  and  other  legal  fees and
          expenses),  judgments,  fines, settlements,  and other amounts arising
          from any and all  claims,  demands,  actions,  suits  or  proceedings,
          civil, criminal,  administrative or investigative,  that relate to the
          operations  of the  Partnership  or the  Company  as set forth in this
          Agreement,  in which such Indemnitee may be involved, or is threatened
          to be involved,  as a party or  otherwise,  except to the extent it is
          finally determined by a court of competent jurisdiction, from which no
          further appeal may be taken, that such Indemnitee's action constituted
          intentional  acts or  omissions  constituting  willful  misconduct  or
          fraud. Without limitation, the foregoing indemnity shall extend to any
          liability of any Indemnitee,  pursuant to a loan guaranty or otherwise
          for any  indebtedness  of the  Partnership  or any  Subsidiary  of the
          Partnership (including, without limitation, any indebtedness which the
          Partnership or any Subsidiary of the  Partnership has assumed or taken
          subject  to),  except with respect to  Partnership  debt


                                     - 23 -

<PAGE>

          that has been assumed or  guaranteed  by an Indemnitee in its capacity
          as a Limited  Partner.  The General  Partner is hereby  authorized and
          empowered,  on behalf of the  Partnership,  to enter  into one or more
          indemnity  agreements  consistent  with the provisions of this Section
          7.6 in favor of any Indemnitee having or potentially  having liability
          for  any  such  indebtedness.  Any  indemnification  pursuant  to this
          Section  7.6 shall be made only out of the assets of the  Partnership,
          and neither the General Partner nor any Limited Partner shall have any
          obligation  to  contribute  to  the  capital  of the  Partnership,  or
          otherwise  provide  funds,  to  enable  the  Partnership  to fund  its
          obligations under this Section 7.6.

     B.   Reasonable  expenses  incurred  by an  Indemnitee  who is a party to a
          proceeding  shall be paid or reimbursed by the  Partnership in advance
          of the final disposition of the proceeding.

     C.   The indemnification  provided by this Section 7.6 shall be in addition
          to any other rights to which an  Indemnitee or any other Person may be
          entitled  under any  agreement,  pursuant to any vote of the Partners,
          under the Company's Articles of Incorporation,  as a matter of law, or
          otherwise,  and shall  continue as to an Indemnitee  who has ceased to
          serve  in  such  capacity  unless  otherwise  provided  in  a  written
          agreement pursuant to which such Indemnities are indemnified.

     D.   The  Partnership  may,  but shall not be  obligated  to,  purchase and
          maintain  insurance,  on  behalf  of the  Indemnities  and such  other
          Persons as the General Partner shall determine,  against any liability
          that may be asserted  against or expenses that may be incurred by such
          Person in connection with the Partnership's activities,  regardless of
          whether the Partnership  would have the power to indemnify such Person
          against such liability under the provisions of this Agreement.

     E.   For purposes of this Section 7.6, the  Partnership  shall be deemed to
          have  requested  an  Indemnitee  to serve as  fiduciary of an Employee
          Benefit Plan whenever the performance by such Indemnitee of its duties
          to the  Partnership  also  imposes  duties on, or  otherwise  involves
          services  by,  such   Indemnitee  to  the  plan  or   participants  or
          beneficiaries of the plan; excise taxes assessed on an Indemnitee with
          respect to an Employee  Benefit Pan pursuant to  applicable  law shall
          constitute  fines  within the meaning of this Section 7.6; and actions
          taken or omitted by the Indemnitee with respect to an Employee Benefit
          Plan  in  the  performance  of its  duties  for a  purpose  reasonably
          believed  by  it  to  be  in  the  interest  of  the  participant  and
          beneficiaries of the plan shall be deemed to be for a purpose which is
          not opposed to the best interests of the Partnership.

     F.   In no event may an Indemnitee  subject any of the Limited  Partners to
          personal  liability by reason of the  indemnification  provisions  set
          forth in this Agreement.

     G.   An Indemnitee shall not be denied  indemnification in whole or in part
          under this Section 7.6 because the  Indemnitee  had an interest in the
          transaction with


                                     - 24 -


<PAGE>
          respect to which the  indemnification  applies if the  transaction was
          otherwise permitted by the terms of this Agreement.

     H.   The  provisions  of  this  Section  7.6 are  for  the  benefit  of the
          Indemnitees,  their heirs, successors,  assigns and administrators and
          shall not be deemed to create any rights for the  benefit of any other
          Persons. Any amendment,  modification or repeal of this Section 7.6 or
          any provision  hereof shall be  prospective  only and shall not in any
          way affect the  Partnership's  liability to any Indemnitee  under this
          Section  7.6,  as in  effect  immediately  prior  to  such  amendment,
          modification,  or  repeal  with  respect  to  claims  arising  from or
          relating  to  matters  occurring,  in whole or in part,  prior to such
          amendment,  modification or repeal, regardless of when such claims may
          arise or be asserted.

     I.   The  provisions  of this  Section  7.6  shall be  inapplicable  to any
          investigation,  claim,  suit, or proceeding,  or the portion  thereof,
          which concerns  claims for breach of contract  between the Partnership
          and a Person  contracting  other than in such  Person's  capacity as a
          Partner, or as an officer or director of the General Partner.

     J.   No provision of this Section 7.6 shall be construed as permitting  any
          contract or  transaction  which is  prohibited  by the  provisions  of
          Section 9.2(b) of the Acquisition Agreement.

      7.7  LIABILITY OF THE GENERAL PARTNER.

     A.   Notwithstanding  anything to the contrary set forth in this Agreement,
          the General Partner and its officers and directors shall not be liable
          for monetary damages to the Partnership, any Partners or any Assignees
          for losses sustained or liabilities  incurred as a result of errors in
          judgment or of any act or omission,  if the General  Partner  acted in
          good faith;  provided,  however,  the foregoing shall not be deemed to
          exculpate  the Company from any  liability  the Company may have under
          the Acquisition Agreement.

     B.   Subject to its  obligations and duties as General Partner set forth in
          Section  7.1A  hereof,  the General  Partner may  exercise  any of the
          powers  granted to it by this  Agreement and perform any of the duties
          imposed upon it hereunder  either directly or by or through its agent.
          The General  Partner  shall not be liable for any acts or omissions on
          the part of any such  agent,  except  in  circumstances  for which the
          General  Partner  may be  liable  under  Section  7.7A or would not be
          subject to indemnification under Section 7.6.

     C.   Any  amendment,  modification  or  repeal of this  Section  7.7 or any
          provision  hereof shall be  prospective  only and shall not in any way
          affect the limitations on the General  Partner's and its officers' and
          directors' liability to the Partnership and the Limited Partners under
          this  Section 7.7 as in effect  immediately  prior to such  amendment,
          modification or repeal with respect to claims arising from or relating
          to


                                     - 25 -


<PAGE>
          matters  occurring,  in  whole or in  part,  prior to such  amendment,
          modification or repeal, regardless of when such claims may arise or be
          asserted.



<PAGE>


      7.8 LIMITED  PARTNERS'  RIGHT TO BRING  DERIVATIVE  LAWSUITS.  Any Limited
Partner may bring an action on behalf of the Partnership, as permitted under the
Act and the laws of the State of Delaware, to recover a judgment in favor of the
Partnership  if the  General  Partner  has  refused to bring the action or if an
effort to cause  the  General  Partner  to bring  the  action  is not  likely to
succeed.

      7.9  OTHER MATTERS CONCERNING THE GENERAL PARTNER.

     A.   The General  Partner  may rely and shall be  protected  in acting,  or
          refraining from acting, upon any resolution,  certificate,  statement,
          instrument,  opinion,  report, notice, request,  consent, order, bond,
          debenture,  or other paper or document believed by it in good faith to
          be genuine and to have been signed or presented by the proper party or
          parties.

     B.   The  General  Partner  may consult  with legal  counsel,  accountants,
          appraisers,  management consultants,  investment bankers,  architects,
          engineers,   environmental   consultants  and  other  consultants  and
          advisers  selected  by it, and any act taken or omitted to be taken in
          reliance  upon the  opinion of such  Persons as to matters  which such
          General  Partner  reasonably  believes  to  be  within  such  Person's
          professional or expert  competence  shall be conclusively  presumed to
          have been done or omitted in good  faith and in  accordance  with such
          opinion.

     C.   The  General  Partner  shall have the right,  in respect of any of its
          powers  or  obligations  hereunder,  to act  through  any of its  duly
          authorized  officers and duly appointed  attorneys-in-fact.  Each such
          attorney  shall,  to the extent provided by the General Partner in the
          power of attorney, have full power and authority to do and perform all
          and every act and duty which is  permitted  or  required to be done by
          the General Partner hereunder.

     D.   Notwithstanding any other provisions of this Agreement or the Act, any
          action of the  General  Partner  on behalf of the  Partnership  or any
          decision  of the General  Partner to refrain  from acting on behalf of
          the Partnership,  undertaken in the good faith belief that such action
          or  omission is  necessary  or  advisable  in order (i) to protect the
          ability of the Company to  continue  to qualify as a REIT;  or (ii) to
          avoid the Company  incurring  any taxes  under  Section 857 or Section
          4981 of the Code, is expressly  authorized under this Agreement and is
          deemed approved by all of the Limited Partners.

      7.10 TITLE TO PARTNERSHIP  ASSETS.  Title to Partnership  assets,  whether
real,  personal or mixed and whether tangible or intangible,  shall be deemed to
be owned by the  Partnership  as an  entity,  and no  Partner,  individually  or
collectively,  shall have any ownership  interest in such Partnership  assets or
any portion thereof.  Title to any or all of the Partnership  assets may be held
in the name of the Partnership,  the General Partner or one or more nominees, as
the General Partner may determine,  including Affiliates of the General Partner.
The General Partner hereby declares and warrants that any Partnership  asset for
which legal  title is held in the name of the General  Partner or any nominee or
Affiliate of the General


                                     - 27 -


<PAGE>
Partner  shall be held by the  General  Partner  for the use and  benefit of the
Partnership in accordance with the provisions of this Agreement;  provided, that
the General  Partner shall use its best efforts to cause  beneficial  and record
title to such  assets  to be  vested in the  Partnership  as soon as  reasonably
practicable.  All  Partnership  assets  shall be recorded as the property of the
Partnership  in its books and records,  irrespective  of the name in which legal
title to such Partnership assets is held.

      7.11 RELIANCE BY THIRD PARTIES.  Notwithstanding  anything to the contrary
in this Agreement,  any Person dealing with the Partnership shall be entitled to
assume that the General Partner has full power and authority, without consent or
approval of any other Partner or Person,  to encumber,  sell or otherwise use in
any manner any and all assets of the Partnership and to enter into any contracts
on  behalf of the  Partnership,  and take any and all  actions  on behalf of the
Partnership,  and such Person shall be entitled to deal with the General Partner
as if the General Partner were the  Partnership's  sole party in interest,  both
legally  and  beneficially.  Each  Limited  Partner  hereby  waives  any and all
defenses  or other  remedies  which  may be  available  against  such  Person to
contest,  negate or disaffirm  any action of the General  Partner in  connection
with any such  dealing.  In no event shall any Person  dealing  with the General
Partner or its  representatives be obligated to ascertain that the terms of this
Agreement have been complied with or to inquire into the necessity or expedience
of any act or action of the  General  Partner or its  representatives.  Each and
every  certificate,  document  or other  instrument  executed  on  behalf of the
Partnership by the General  Partner or its  representatives  shall be conclusive
evidence in favor of any and every Person relying thereon or claiming thereunder
that:  (i) at the  time of the  execution  and  delivery  of  such  certificate,
document or instrument,  this  Agreement was in full force and effect;  (ii) the
Person  executing and delivering  such  certificate,  document or instrument was
duly authorized and empowered to do so for and on behalf of the Partnership; and
(iii) such  certificate,  document or instrument was duly executed and delivered
in accordance  with the terms and  provisions  of this  Agreement and is binding
upon the Partnership.

ARTICLE 8. RIGHTS AND OBLIGATIONS OF LIMITED PARTNERS.

      8.1 LIMITATION OF LIABILITY.  The Limited Partners shall have no liability
under this Agreement except as expressly  provided in this Agreement,  including
Sections 10.5 and 13.3 hereof, or under the Act.  Notwithstanding  the preceding
sentence, each Limited Partner shall have the right, but not the obligation,  to
guarantee a portion of the  indebtedness  of the  Partnership in accordance with
the terms of the Acquisition Agreement.

      8.2 MANAGEMENT OF BUSINESS. No Limited Partner or Assignee (other than the
General Partner, any of its Affiliates or any officer, director, employee, agent
or trustee of the General Partner,  the Partnership or any of their  Affiliates,
in their  capacity  as such)  shall take part in the  operation,  management  or
control (within the meaning of the Act) of the Partnership's business,  transact
any business in the  Partnership's  name or have the power to sign documents for
or otherwise bind the  Partnership.  The


                                     - 28 -

<PAGE>
transaction of any such business by the General  Partner,  any of its Affiliates
or any officer,  director,  employee,  partner,  agent or trustee of the General
Partner, the Partnership or any of their Affiliates,  in their capacity as such,
shall not affect,  impair or eliminate the  limitations  on the liability of the
Limited Partners or Assignees under this Agreement.

      8.3 OUTSIDE  ACTIVITIES  OF LIMITED  PARTNERS.  Subject to any  agreements
entered  into  pursuant to Section 7.5 hereof and any other  agreements  entered
into by a Limited  Partner or its Affiliates  with the Partnership or any of its
Subsidiaries  including the  Acquisition  Agreement,  any Limited Partner (other
than the Company) and any officer, director, employee, agent, trustee, Affiliate
or shareholder of any Limited Partner (other than the Company) shall be entitled
to and may have business interests and engage in business activities in addition
to  those  relating  to  the  Partnership,   including  business  interests  and
activities  that are in  direct  competition  with the  Partnership  or that are
enhanced by the activities of the  Partnership.  Neither the Partnership nor any
Partners  shall  have any  rights by virtue of this  Agreement  in any  business
ventures of any Limited Partner or Assignee which are permitted within the scope
of this Section 8.3. None of the Limited  Partners  (other than the Company) nor
any other  Person  shall  have any  rights by  virtue of this  Agreement  or the
Partnership  relationship  established  hereby in any  business  ventures of any
other Person and such Person shall have no obligation pursuant to this Agreement
to offer any  interest in any such  business  ventures to the  Partnership,  any
Limited  Partner  or any such other  Person,  even if such  opportunity  is of a
character  which, if presented to the  Partnership,  any Limited Partner or such
other Person, could be taken by such Person.

      8.4 RETURN OF CAPITAL.  Except in connection with the exercise of Exchange
Rights or Put Rights,  no Limited Partner shall be entitled to the withdrawal or
return of its Capital  Contribution,  except to the extent of distributions made
pursuant to this Agreement or upon  termination  of the  Partnership as provided
herein.  Except to the extent provided by Appendix II, or as otherwise expressly
provided in this  Agreement,  no Limited Partner or Assignee shall have priority
over any other Limited  Partner or Assignee,  either as to the return of Capital
Contributions or as to profits, losses or distributions.

      8.5  RIGHTS OF LIMITED PARTNERS RELATING TO THE PARTNERSHIP.

     A.   In addition to the other rights  provided by this  Agreement or by the
          Act,  and  except as  limited by Section  8.5B  hereof,  each  Limited
          Partner shall have the right, for a purpose reasonably related to such
          Limited  Partner's  interest as a limited partner in the  Partnership,
          upon written demand with a statement of the purpose of such demand and
          at such  Limited  Partner' s own expense  (including  such  reasonable
          copying  and  administrative   charges  as  the  General  Partner  may
          establish from time to time):  (i) to obtain a copy of the most recent
          annual  and  quarterly  reports  filed  by the  Company  with  the SEC
          pursuant  to  the  Exchange   Act;  (ii)  to  obtain  a  copy  of  the
          Partnership's  federal,  state and local  income tax  returns for each
          Partnership  Year; (iii) to obtain a current list of the name and last
          known business,  residence or mailing


                                     - 29 -

<PAGE>
          address of each Partner;  (iv) to obtain a copy of this  Agreement and
          the  Certificate  and  all  amendments  and/or  restatements  thereto,
          together  with executed  copies of all powers of attorney  pursuant to
          which  this  Agreement,  the  Certificate  and all  amendments  and/or
          restatements  thereto have been  executed;  and (v) to obtain true and
          full  information  regarding the amount of cash and a description  and
          statement  of any  other  property  or  services  contributed  by each
          Partner and which each Partner has agreed to contribute in the future,
          and the date on which each became a Partner.

     B.   Notwithstanding  any other  provision of this Section 8.5, the General
          Partner  may keep  confidential  from the Limited  Partners,  for such
          period  of time as the  General  Partner  determines  in its  sole and
          absolute  discretion to be reasonable,  any  information  that (i) the
          General  Partner  reasonably  believes  to be in the  nature  of trade
          secrets or other confidential information, the disclosure of which the
          General Partner in good faith believes is not in the best interests of
          the  Partnership or the Company or could damage the Partnership or its
          business;  or (ii) the Partnership is required by law or by agreements
          with an unaffiliated third party to keep confidential.

      8.6 EXCHANGE RIGHTS. The Limited Partners may exchange all or a portion of
their  L.P.  Units for  shares of Common  Stock on the terms and  subject to the
conditions and restrictions contained in the Exchange Rights Agreement.

      8.7  PUT RIGHTS.

     A.   Upon the terms and subject to the conditions of this  Agreement,  each
          Limited  Partner  (other  than  Carl E.  Berg and  Clyde J.  Berg with
          respect  to all  L.P.  Units  owned  by  them  beneficially  as of the
          Effective  Date)  shall  have the right to  tender to the  Partnership
          outstanding  L.P.  Units no more than once during any 12-month  period
          commencing  after  December 29, 1999. The  Partnership  shall purchase
          properly  tendered L.P. Units for cash at a price (the "Tender Price")
          equal to the average  market value of the Common Stock price as of the
          date the  Limited  Partner  delivers to the  General  Partner,  at the
          address  provided in Appendix II, a completed and duly executed Letter
          of  Transmittal  in the form  attached  as  Exhibit A to the  Exchange
          Rights  Agreement,  and any other documents  required by the Letter of
          Transmittal.  Only a tender in this  manner  will  constitute  a valid
          tender of L.P.  Units  pursuant  to this  Section  8.7A.  The  General
          Partner shall make all  determinations  as to the validity and form of
          any tender of L.P.  Units in  accordance  with the  provisions of this
          Agreement,  and upon  rejection of a tender,  shall give the tendering
          holder  written  notice of such  rejection,  which  shall  include the
          reasons therefor. Unless otherwise agreed by the General Partner or as
          provided  in Section  8.7C,  tenders of L.P.  Units  pursuant  to this
          Section  8.7A  shall  be  irrevocable  and  shall  not be  subject  to
          withdrawal or modification.

     B.   Within 15 days  after  the valid  tender  of L.P.  Units  pursuant  to
          Section  8.7A,  the Company may make an election to purchase such L.P.
          Units itself with cash of the Company (the "Cash  Election").  If with
          respect to any tender of L.P.  Units pursuant to this Section 8.7, the
          Company makes the Cash Election, then within 90 days after such tender
          the Company  shall pay to the tendering  Limited  Partner an aggregate
          amount of cash equal to the purchase  price of the tendered L.P. Units
          with available cash,


                                     - 30 -

<PAGE>

          borrowed  funds or the proceeds of an offering of new shares of Common
          Stock.  Upon  acquiring  the L.P.  Units,  the  Company  may cause the
          Partnership  to retire  the L.P.  Units and  convert  them to the same
          number of Units of General Partner  Interest,  and the General Partner
          shall amend Appendix I accordingly.

     C.   Notwithstanding  the  foregoing,  if the  purchase  price for the L.P.
          Units tendered by a Limited  Partners in one year exceeds  $1,000,000,
          the   Partnership   or  the  Company   shall  be  entitled  to  reduce
          proportionally  the  number  of L.P.  Units to be  acquired  from each
          Tendering  Partner  so that the total  purchase  price does not exceed
          $1,000,000 if the Company so elects. In addition,  if the Company does
          not timely make the Cash Election,  the Partnership  shall deliver the
          purchase  price for the  tendered  L.P.  Units to the Limited  Partner
          within 45 days after the Letter of  Transmittal  was  delivered to the
          General Partner. The General Partner may defer payment of the purchase
          price until such time not to exceed 120 days after the valid tender of
          L.P.  Units pursuant to Section 8.7A as the  Partnership  has adequate
          Available Cash after payment of the purchase  price, in the reasonable
          judgment  of  the  General  Partner,  to  fund  current  distributions
          necessary for the Company to satisfy the REIT  Requirements  following
          the waiver by the Company of its right to make the Cash  Election.  In
          such  event,  the General  Partner  shall give the  tendering  Limited
          Partner  written  notice of its  decision to defer the payment  with a
          calculation  supporting the General Partner's  determination within 20
          days after the Letter of  Transmittal  was  delivered  to the  General
          Partner.  Upon receiving such notice, the Limited Partner may withdraw
          the tender. In addition,  the Limited Partner may instead exercise its
          rights  under the  Exchange  Rights  Agreement.  If a Limited  Partner
          tenders L.P. Units  pursuant to this Section 8.7, the Limited  Partner
          shall pay the amount of any additional  documentary,  stamp or similar
          issue or transfer tax which is due, and shall be  responsible  for all
          income or other taxes as a result of such exchange.

     D.   Each  tender of L.P.  Units  shall  constitute  a  representation  and
          warranty   by  the   tendering   Limited   Partner   of  each  of  the
          representations  and  warranties  set  forth in the form of  Letter of
          Transmittal.

     E.   Until the holder of L.P.  Units  tendered  pursuant to Section 8.7 has
          received  cash  in  exchange  therefor,  such  Limited  Partner  shall
          continue  to hold and own such  L.P.  Units for all  purposes  of this
          Agreement.


                                     - 31 -

<PAGE>
      8.8  NEW EQUITY FINANCING RIGHTS.

     A.   If the General Partner  determines that it is in the best interests of
          the  Partnership  to obtain  additional  funds through the issuance of
          additional  Partnership  Interests,  the General  Partner  shall first
          offer to the Limited Partners in each of the  partnerships  comprising
          the Operating  Partnership,  including the  Partnership,  the right of
          first refusal to purchase that portion of such additional  Partnership
          Interests  which their  respective  numbers of L.P.  Units bear to the
          total number of outstanding  L.P. Units in the Operating  Partnership.
          The General Partner shall make this offer pursuant to a written notice
          describing  the  offering  price,   class  or  series  of  Partnership
          Interest, and all other material terms of the offer. Such notice shall
          be sent to each Limited  Partner at the address  reflected in Appendix
          I, as amended.  The Limited  Partners shall have 10 days from the date
          of such notice to elect to purchase  any such  additional  Partnership
          Interests.   Such  election  shall  be  made  pursuant  to  a  written
          subscription form specifying the number of Units of additional Limited
          Partnership  Interests the Limited  Partner intends to acquire and the
          total  purchase  price  therefor,  and shall be signed by the  Limited
          Partner and delivered to the General  Partner at the address set forth
          on Appendix I. After such 10-day period,  the General Partner shall be
          free  to  offer  any  additional  Limited  Partnership   Interests  on
          substantially similar terms to non-Partners and Partners alike.

     B.   The  foregoing  right of the Limited  Partners  to acquire  additional
          equity  interests  offered by the Partnership  ("New Equity  Financing
          Right")  shall  not  apply  to any  offering  (i)  which  is part of a
          transaction in which the Limited  Partners had the ability to exercise
          their New Equity Financing Rights under the Acquisition Agreement with
          respect to an offering of Equity  Securities  by the Company,  (ii) in
          connection  with a merger or other  business  combination  subject  to
          approval by the L.P. Unit Majority pursuant to Section 8.9, (iii) to a
          Person in connection  with the  acquisition of property or services by
          the Partnership from such Person, or (iv) of any Partnership  Interest
          upon conversion of an outstanding  Equity Security of the Partnership,
          any Partnership Subsidiary, or the Company.

      8.9  MATTERS REQUIRING L.P. UNIT MAJORITY APPROVAL.

      The consent of the L.P. Unit Majority will be required with respect to the
following  actions  involving  the  Partnership:  (i)  the  material  amendment,
modification or termination of the Agreement;  (ii) a general assignment for the
benefit of creditors or the appointment of a custodian,  receiver or trustee for
any of the assets of the  Partnership;  (iii) the  institution of any proceeding
for bankruptcy of the Partnership;  (iv) the Transfer of any General Partnership
Interests,  including  transfers  attendant  to  any  merger,  consolidation  or
liquidation  of the  Company  except as  otherwise  provided  in 11.2C;  (v) the
admission of any additional or substitute  General  Partner in the  Partnership;
and (vi) a Change of Control  Transaction.  In  addition,  until the  Protective
Provisions  Expiration  Date, the consent of the L.P. Unit Majority will also be
required  with respect to: (i) any  Terminating  Capital  Transaction;  (ii) the
dissolution  and  liquidation of the  Partnership;  and (iii) the  Partnership's
issuance of Limited Partner


                                     - 32 -

<PAGE>
Interests  having  seniority  over the L.P.  Units with respect to  distributing
assets, and voting rights.

      8.10  APPROVAL OF CERTAIN  TAXABLE  SALES.  Until the earlier of the tenth
anniversary of the closing of the Berg Acquisition and the Protective Provisions
Expiration  Date, the General  Partner must obtain the prior written  consent of
Carl E. Berg,  and upon Carl  Berg's  death if prior to the  expiration  of this
provision,  Clyde J. Berg, before effecting any sale or other transfer of any of
the Properties identified on Schedules 1, 2, 3 or 5 to the Acquisition Agreement
on behalf of the Partnership  which results in the recognition of taxable income
by any member of the Berg Group  under the Code.  Until the earlier of the tenth
anniversary of the Berg  Acquisition  and the date on which John T.  Kontrabecki
ceases to  beneficially  own at least 750,000 L.P.  Units,  the General  Partner
shall obtain his prior  written  consent  prior to  effecting  any sale or other
transfer  of  any of  the  Properties  (identified  in  Schedules  4 or 5 to the
Acquisition  Agreement)  as owned by  Kontrabecki,  Triangle  Partners,  or Berg
Ventures  II,  which  will  result  in the  recognition  of  taxable  income  by
Kontrabecki under the Code.

ARTICLE 9. BOOKS, RECORDS, ACCOUNTING AND REPORTS.

      9.1  RECORDS AND ACCOUNTING.

     The General Partner shall keep or cause to be kept at the principal  office
of the Partnership those records and documents  required to be maintained by the
Act and other books and records deemed by the General  Partner to be appropriate
with respect to the Partnership's business,  including,  without limitation, all
books and records  necessary to comply with applicable REIT  Requirements and to
provide to the Limited Partners any  information,  lists and copies of documents
required to be provided  pursuant to Sections  8.5A and 9.3 hereof.  Any records
maintained  by or on  behalf of the  Partnership  in the  regular  course of its
business  may be kept on,  or be in the form of,  punch  cards,  magnetic  tape,
photographs,  micrographics or any other  information  storage device,  provided
that the records so maintained are convertible into clearly legible written form
within a  reasonable  period  of time.  The  books of the  Partnership  shall be
maintained, for financial and tax reporting purposes, on an accrual basis in


                                     - 33 -


<PAGE>
accordance with GAAP, or such other basis as the General  Partner  determines to
be necessary or appropriate.

      9.2  FISCAL YEAR.  The fiscal year of the Partnership shall be the
calendar year.

ARTICLE 10.     TAX MATTERS.

      10.1 PREPARATION OF TAX RETURNS. The General Partner shall arrange for the
preparation and timely filing of all  Partnership  returns for federal and state
income tax  purposes  and shall use all  reasonable  efforts to furnish,  within
sixty  (60)  days  of the  close  of each  taxable  year,  the  tax  information
reasonably  required by Limited  Partners for their federal and state income tax
reporting purposes.

      10.2 TAX ELECTIONS. The General Partner shall elect for the Partnership to
be considered a limited  partnership on all applicable  federal and state income
tax returns to be filed by the Partnership. Except as otherwise provided herein,
the  General  Partner  shall,  in its sole and  absolute  discretion,  determine
whether  to  make  any  other   available   election   pursuant   to  the  Code.
Notwithstanding  the above,  in making any such tax election the General Partner
shall take into account the tax consequences to the Limited  Partners  resulting
from any such  election.  The General  Partner  shall make such tax elections on
behalf of the Partnership as the L.P. Unit Majority  request,  provided that the
General  Partner  believes that such election is not adverse to the interests of
the General Partner, including its interest in preserving its qualification as a
REIT  under  the  Code.  In  addition,  the  General  Partner  shall  elect  the
"traditional   method"  of  making  Section  704(c)   allocations   pursuant  to
Regulations  Section 1.704-3 with respect to each Property under the Acquisition
Agreement.  The General  Partner  shall have the right to seek to revoke any tax
election it makes  (other than the  election  to use the  traditional  method of
making  the  Section  704(c)  allocations   described  in  this  Section  10.2),
including,  without limitation, the election under Section 754 of the Code, upon
the General Partner' s determination,  in its sole and absolute discretion, that
such  revocation  is in the best  interests of the Limited  Partners  taken as a
whole and with the  approval  of the L.P.  Unit  Majority  until the  Protective
Provisions Expiration Date. All such elections and determinations may be made on
a  Property-by-Property  basis,  and the  General  Partner  shall be required to
analyze the impact of all such elections and determinations on that basis.

      10.3 TAX MATTERS PARTNER.

     A.   The  General  Partner  shall  be  the  "tax  matters  partner"  of the
          Partnership  for  federal  income tax  purposes.  Pursuant  to Section
          6230(e) of the Code, upon receipt of notice from the Internal  Revenue
          Service of the beginning of an administrative  proceeding with respect
          to the Partnership, the tax matters partner shall furnish the Internal
          Revenue  Service  with  the  name,  address,  taxpayer  identification
          number,  and Percentage  Interest of each of the Limited  Partners and
          the  Assignees;  provided,  that such  information  is provided to the
          Partnership by the Limited Partners and the Assignees.


                                     - 34 -


<PAGE>
     B.   The tax matters partner is authorized, but not required:

          (1)  to enter into any settlement  with the Internal  Revenue  Service
               with respect to any  administrative  or judicial  proceedings for
               the  adjustment of  Partnership  items  required to be taken into
               account by a Partner for income tax purposes (such administrative
               proceedings  being referred to as a "tax audit" and such judicial
               proceedings being referred to as "judicial  review"),  and in the
               settlement  agreement the tax matters partner may expressly state
               that such  agreement  shall bind all  Partners,  except that such
               settlement  agreement  shall not bind any Partner (i) who (within
               the time prescribed pursuant to the Code and Regulations) files a
               statement with the Internal  Revenue  Service  providing that the
               tax matters  partner shall not have the authority to enter into a
               settlement  agreement on behalf of such Partner; or (ii) who is a
               "notice  partner" (as defined in Section  6231(a)(8) of the Code)
               or a member of a "notice group" (as defined in Section 6223(b)(2)
               of the Code);

          (2)  in the event that a notice of a final  administrative  adjustment
               at the  Partnership  level of any item  required to be taken into
               account by a Partner for tax purposes (a "final  adjustment")  is
               mailed to the tax matters  partner,  to seek  judicial  review of
               such final  adjustment,  including  the filing of a petition  for
               readjustment  with the Tax Court or the filing of a complaint for
               refund with the United States Claims Court or the District  Court
               of the United States for the district in which the  Partnership's
               principal place of business is located;

          (3)  to  intervene  in any  action  brought by any other  Partner  for
               judicial review of a final adjustment;

          (4)  to file a  request  for an  administrative  adjustment  with  the
               Internal  Revenue Service and, if any part of such request is not
               allowed by the Internal Revenue  Service,  to file an appropriate
               pleading (petition or complaint) for judicial review with respect
               to such request;

          (5)  to enter into an agreement with the Internal  Revenue  Service to
               extend the period for assessing any tax which is  attributable to
               any item  required  to be taken  account of by a Partner  for tax
               purposes, or an item affected by such item; and

          (6)  to take  any  other  action  on  behalf  of the  Partners  or the
               Partnership in connection  with any tax audit or judicial  review
               proceeding  to  the  extent   permitted  by  applicable   law  or
               regulations.

               The  taking of any  action  and the  incurring of any  expense by
               the tax matters  partner in connection  with any such proceeding,
               except to the extent required by law, is a matter in the sole and
               absolute discretion of the tax matters partner and the provisions
               relating to indemnification of the General  Partner set forth in


                                     - 35 -

<PAGE>
               Section 7.6 of this  Agreement  shall be fully  applicable to the
               tax matters partner in its capacity as such.

     C.   The  tax  matters  partner  shall  receive  no  compensation  for  its
          services.  All third  party  costs and  expenses  incurred  by the tax
          matters partner in performing its duties as such (including  legal and
          accounting  fees and  expenses)  shall  be  borne by the  Partnership.
          Nothing  herein shall be construed  to restrict the  Partnership  from
          engaging  an  accounting  firm to assist  the tax  matters  partner in
          discharging its duties hereunder,  so long as the compensation paid by
          the Partnership for such services is reasonable.

      10.4  ORGANIZATIONAL  EXPENSES.  The  Partnership  shall  elect to  deduct
expenses,  if any,  incurred by it in organizing the Partnership  ratably over a
60-month period as provided in Section 709 of the Code.

      10.5  WITHHOLDING.  Each Limited Partner hereby authorizes the Partnership
to withhold  from, or pay on behalf of or with respect to, such Limited  Partner
any amount of federal,  state,  local, or foreign taxes that the General Partner
determines  that the  Partnership is required to withhold or pay with respect to
any amount  distributable  or allocable to such Limited Partner pursuant to this
Agreement,  including,  without limitation, any taxes required to be withheld or
paid by the Partnership  pursuant to Sections 1441,  1442,  1445, or 1446 of the
Code.  Any amount paid on behalf of or with respect to a Limited  Partner  shall
constitute a loan by the Partnership to such Limited  Partner,  which loan shall
be repaid by such Limited  Partner  within 15 days after notice from the General
Partner that such payment must be made unless (i) the Partnership withholds such
payment  from a  distribution  which  would  otherwise  be made  to the  Limited
Partner;  or (ii) the  General  Partner  determines,  in its  sole and  absolute
discretion,  that such payment may be  satisfied  out of the amount of Available
Cash which would,  but for such payment,  be distributed to the Limited Partner.
Any  amounts  withheld  pursuant to the  foregoing  clauses (i) or (ii) shall be
treated as having been distributed to such Limited Partner. Each Limited Partner
hereby  unconditionally  and  irrevocably  grants to the  Partnership a security
interest in such Limited Partner' s Partnership  Interest to secure such Limited
Partner's  obligation to pay to the Partnership any amounts  required to be paid
pursuant to this Section 10.5. In the event that a Limited  Partner fails to pay
when due any amounts owed to the Partnership  pursuant to this Section 10.5, the
General  Partner  may, in its sole and  absolute  discretion,  elect to make the
payment to the Partnership on behalf of such defaulting Limited Partner,  and in
such event shall be deemed to have loaned such amount to such defaulting Limited
Partner  and shall  succeed to all rights and  remedies  of the  Partnership  as
against such defaulting Limited Partner. Without limitation,  in such event, the
General  Partner  shall  have the  right to  receive  distributions  that  would
otherwise be distributable to such defaulting Limited Partner until such time as
such loan,  together with all interest  thereon,  has been paid in full, and any
such distributions so received by the General Partner shall be treated as having
been  distributed to the defaulting  Limited Partner and immediately paid by the
defaulting Limited Partner to the General Partner in repayment of such loan. Any
amount payable by a Limited Partner


                                     - 36 -


<PAGE>
hereunder  shall bear  interest  at the  highest  base or prime rate of interest
published from time to time by any of Wells Fargo Bank,  N.A., plus 4 percentage
points,  but in no event higher than the maximum lawful rate of interest on such
obligation,  such interest to accrue from the date such amount is due (i.e.,  15
days after demand) until such amount is paid in full. Each Limited Partner shall
take such actions as the  Partnership  or the General  Partner  shall request in
order to perfect or enforce the security interest created hereunder.

ARTICLE 11.     TRANSFERS AND WITHDRAWALS.

      11.1 TRANSFER.

     A.   The term  "Transfer,"  when used in this  Article 11 with respect to a
          Unit,  shall be deemed to refer to a transaction  by which the General
          Partner  purports  to assign  all or any part of its  General  Partner
          Interest to another Person or by which a Limited  Partner  purports to
          assign  all or any part of its  Limited  Partner  Interest  to another
          Person.  The term  "Transfer"  when used in this  Article  11 does not
          include any exchange of L.P. Units for shares of Common Stock pursuant
          to the Exchange Rights Agreement.

     B.   No  Partnership  Interest shall be  Transferred,  in whole or in part,
          except in accordance  with the terms and  conditions set forth in this
          Article  11. Any  Transfer  or  purported  Transfer  of a  Partnership
          Interest not made in accordance with this Article 11 shall be null and
          void.

      11.2 TRANSFER OF THE COMPANY'S PARTNERSHIP INTERESTS.

     A.   The General  Partner may not  withdraw as General  Partner or transfer
          its General Partner  Interest or Limited  Partner  Interest unless (i)
          the L.P.  Unit  Majority  (excluding  L.P.  Units held by the Company)
          consents to such Transfer or  withdrawal,  or (ii) such Transfer is to
          an entity which is wholly-owned by the Company and is a Qualified REIT
          Subsidiary under Section 856(i) of the Code.

     B.   In the event the  General  Partner  withdraws  as  General  Partner in
          accordance with Section 11.2A, the General  Partner's  General Partner
          Interest  shall  immediately  be  converted  into  a  Limited  Partner
          Interest.

      11.3 LIMITED PARTNERS' RIGHTS TO TRANSFER.

     A.   Subject to the  provisions  of this Section  11.3,  a Limited  Partner
          (other  than the  Company)  may,  without  the  consent of the General
          Partner:

          (a)  if such Limited  Partner is a partnership or a limited  liability
               company,  Transfer  such  Limited  Partner's  L.P.  Units  to any
               partner of such  Limited  Partner  or any member of such  limited
               liability company;


                                     - 37 -

<PAGE>
          (b)  Transfer such Limited  Partner's  L.P. Units to any other Limited
               Partner; and

          (c)  pledge  such  Limited  Partner's  L.P.  Units  to  any  financial
               institution as collateral for any loan with respect to which such
               Limited Partner is personally liable.

     B.   Subject to the provisions of this Section 11.3, a Limited  Partner may
          Transfer  any of such  Limited  Partner's  L.P.  Units,  other than in
          accordance with Section 11.3A,  only with the prior written consent of
          the General Partner which may be withheld in its sole discretion.

     C.   If  a  Limited  Partner  is  subject  to  Incapacity,   the  executor,
          administrator,  trustee, committee,  guardian, conservator or receiver
          of such  Limited  Partner's  estate  shall have all of the rights of a
          Limited  Partner,  but not more  rights  than  those  enjoyed by other
          Limited  Partners,  for the purpose of settling or managing the estate
          and such  power as the  Incapacitated  Limited  Partner  possessed  to
          Transfer  all or any part of his or its  interest in the  Partnership.
          The  Incapacity  of a Limited  Partner,  in and of  itself,  shall not
          dissolve or terminate the Partnership.

     D.   No Transfer by a Limited  Partner of its L.P. Units may be made to any
          Person if (i) in the opinion of legal counsel for the Partnership,  it
          would  result  in the  Partnership  being  treated  as an  association
          taxable  as  a  corporation;   (ii)  such  Transfer  would  cause  the
          Partnership  to become,  with  respect to any  Employee  Benefit  Plan
          subject  to Title I of ERISA,  a  "party-in-interest"  (as  defined in
          Section  3(14) of ERISA) or a  "disqualified  person"  (as  defined in
          Section  4975(c)  of the  Code);  (iii) such  Transfer  would,  in the
          opinion of legal counsel for the Partnership, cause any portion of the
          assets of the Partnership to constitute assets of any Employee Benefit
          Plan pursuant to Department of Labor Regulations  Section  2510.2-101;
          (iv) such Transfer would subject the  Partnership to regulation  under
          the Investment  Company Act of 1940,  the  Investment  Advisors Act of
          1940 or ERISA;  or (v) such  Transfer is a sale or exchange,  and such
          sale or  exchange  would,  when  aggregated  with all other  sales and
          exchanges  during  the  12-month  period  ending  on the  date  of the
          proposed Transfer, result in a Change of Control Transaction.

     E.   Subject to the  foregoing  provisions of Section 11.3 and the terms of
          Section  12.2,  a  Limited  Partner  may  transfer  L.P.  Units  to an
          Affiliate and have such Affiliate become a Limited Partner.

      In addition to the conditions set forth in Sections 11.3D,  11.4, and 12.2
any Transfer pursuant to this Article 11 is subject to the following conditions:

          (1)  unless  such  Transfer  is being made  pursuant  to an  effective
               registration  statement  under the Securities Act, or pursuant to
               Rule  144 or  Rule  144A  thereunder,  the  transferring  Limited
               Partner shall deliver to the Company a notice with respect to the
               proposed  transfer,  together  with an opinion of counsel in form
               and substance  satisfactory  to the General  Partner  prepared by
               counsel  reasonably


                                     - 38 -

<PAGE>
               satisfactory to the General Partner (which shall include, without
               limitation,  counsel to each of the  Limited  Partners  as of the
               date hereof),  to the effect that an exemption from  registration
               and qualification under such Securities Act is available;

          (2)  the  transferring  Limited Partner and its transferee  shall each
               provide  a  certificate  to the  General  Partner,  in  form  and
               substance satisfactory to the General Partner, to the effect that
               (i) the proposed  transfer will not be effected on or through (a)
               a United States national,  regional or local securities exchange,
               (b) a foreign securities exchange or (c) an interdealer quotation
               system that regularly disseminates firm buy or sell quotations by
               identified brokers or dealers (including, without limitation, the
               Nasdaq) by electronic means or otherwise, and (ii) it is not, and
               the proposed  transfer will not be made by,  through or on behalf
               of, (a) a Person who  regularly  quotes  equity  interests in the
               Partnership, such as a broker or dealer making a market in equity
               interests in the  Partnership or (b) a Person who regularly makes
               available to the public (including  customers or subscribers) bid
               or  offer  quotes  with  respect  to  equity   interests  in  the
               Partnership  and stands ready to effect buy or sell  transactions
               at the quoted prices for itself or on behalf of others; PROVIDED,
               HOWEVER,  that such  certificate  shall not be  required  for any
               transfer in connection with a registered public offering;

          (3)  the transferee  must be a United States Person for federal income
               tax purposes; and

          (4)  such transfer must not cause the Partnership to terminate or lose
               its status as a partnership for tax purposes.

     F.   If it shall  become  unlawful  for any Limited  Partner to continue to
          hold some or all of the L.P. Units held by such Limited Partner, or by
          reason of legal or  regulatory  restrictions  the cost to such Limited
          Partner to continue to hold such L.P.  Units (in relation to the value
          of such L.P.  Units to such Limited  Partner)  has, in the  reasonable
          judgment  of  such  Limited  Partner,  significantly  increased,  such
          Limited  Partner may, at any time  following  the date three  business
          days after the delivery by such Limited Partner to the General Partner
          a notice of the existence of any such restriction, Transfer all or any
          portion of the L.P.  Units held by such  Limited  Partner  free of any
          restrictions   imposed   under  this   Agreement   (other  than  those
          restrictions  required by federal or state laws, including securities,
          and tax, laws, and subject to the prospective  transferee  meeting the
          requirements of Section 12.2, and provided that the transferee Limited
          Partner shall hold its L.P.  Units subject to all of the terms of this
          Agreement);  but only if such Limited Partner cannot then exercise its
          Exchange  Rights or Put Rights for cash,  and the Company has notified
          the Limited  Partner  that the Company will not register for offer and
          sale all  shares of  Common  Stock  issued  upon the  exercise  of the
          Exchange Rights within 90 days. In connection  therewith,  the Company
          shall assist such Limited  Partner in disposing of the L.P. Units held
          by it in a prompt  and  orderly  manner,  and (at the  request of such
          Limited Partner) make available (and authorize such Limited Partner to
          make available  through the Company)  financial and other  information
          concerning  the  Company  and  its  Subsidiaries  (including,  without
          limitation,  the  information  described  in Rule  144A(d)(4))  to any
          prospective  purchaser  of


                                     - 39 -

<PAGE>
          such L.P. Units (it being agreed that such prospective purchaser shall
          be either an "accredited  investor" within the meaning of Rule 501 (a)
          under the Securities Act or a "qualified  institutional  buyer" within
          the meaning of Rule 144A(d)(1)  under such Act to the extent that such
          L.P. Units are "restricted securities" as such term is defined in Rule
          144).  The Company may require  that each such  prospective  purchaser
          keep confidential, pursuant to customary confidentiality requirements,
          any information received by it pursuant to this provision.

      11.4  SUBSTITUTED  LIMITED  PARTNERS.  The General  Partner shall have the
right to consent to the  admission  of a  transferee  who  receives  L.P.  Units
pursuant to Section  11.3A,  C, or E, which  consent may be given or withheld by
the General Partner in its sole and absolute  discretion.  The General Partner's
failure or refusal to permit such  transferee  to become a  Substituted  Limited
Partner shall not give rise to any cause of action  against the  Partnership  or
any Partner.

      11.5  ASSIGNEES.  If  the  General  Partner,  in  its  sole  and  absolute
discretion, does not consent to the admission of any transferee as a Substituted
Limited  Partner,  as  described  in  Section  11.4,  such  transferee  shall be
considered  an Assignee for  purposes of this  Agreement.  An Assignee  shall be
deemed  to  have  had   assigned  to  it,  and  shall  be  entitled  to  receive
distributions  from the Partnership and the share of Net Income,  Net Losses and
any other Tax Items with respect to the L.P. Units assigned to such  transferee,
but shall not be deemed to be a holder of L.P. Units for any other purpose under
this Agreement,  and shall not be entitled to vote such L.P. Units in any matter
presented to the Limited  Partners  for a vote (such L.P.  Units being deemed to
have been voted on such matter in the same  proportion  as all other L.P.  Units
held by Limited Partners are voted). In the event the Assignee desires to make a
further assignment of any such L.P. Units, such Assignee shall be subject to all
of the  provisions  of this Article 11 to the same extent and in the same manner
as any Limited Partner desiring to make an assignment of L.P. Units.

      11.6 EFFECT OF  PROHIBITED  TRANSFER.  Any  transfer  made in violation of
Article 11 shall be null and void and of no force and effect.

      11.7 GENERAL PROVISIONS.

     A.   No Limited Partner may withdraw from the  Partnership  other than as a
          result of a permitted  Transfer of all of such Limited Partner' s L.P.
          Units in accordance with this Article 11, or pursuant to the tender or
          exchange  of all of its L.P.  Units  pursuant  to the  exercise of Put
          Rights or Exchange Rights.

     B.   Any Limited  Partner  who shall  Transfer  all of its L.P.  Units in a
          Transfer  permitted  pursuant  to this  Article 11 shall cease to be a
          Limited Partner upon the admission of all Assignees of such L.P. Units
          as Substituted  Limited Partners.  Similarly,  any Limited Partner who
          shall  Transfer all of its L.P. Units pursuant to a tender or exchange
          of all of its L.P.  Units  pursuant  to the  exercise of Put Rights or
          Exchange Rights shall cease to be a Limited Partner.


                                     - 40 -


<PAGE>
     C.   Without  the  consent  of the  General  Partner,  permitted  Transfers
          pursuant to this Article 11 may be made effective only as of the first
          day of a Quarter.

     D.   If any Partnership Interest is transferred or assigned during the year
          in  compliance  with the  provisions  of this  Article 11, or redeemed
          pursuant to Section 8.7, or exchanged  pursuant to the Exchange Rights
          Agreement on any day other than the first day of a  Partnership  Year,
          the Net Income, Net Losses, each item thereof, and all other Tax Items
          attributable  to such  interest  for such  Partnership  Year  shall be
          divided  and  allocated   between  the  transferor   Partner  and  the
          transferee  Partner by taking into  account  their  varying  interests
          during the  Partnership  Year in accordance with Section 706(d) of the
          Code,  using the  interim  closing  of the books  method.  Solely  for
          purposes  of  making  such  allocations,  each of such  items  for the
          calendar  month in which the  Transfer or  assignment  occurs shall be
          allocated to the  transferee  Partner,  and none of such items for the
          calendar  month in which an exchange  occurs shall be allocated to the
          exchanging Partner,  provided,  however,  that the General Partner may
          adopt such other  conventions  relating to  allocations  in connection
          with  transfers,  assignments,  or  exchanges  as  it  determines  are
          necessary  or  appropriate.   All   distributions  of  Available  Cash
          attributable  to such L.P. Units with respect to which the Partnership
          Record  Date is  before  the  date of such  transfer,  assignment,  or
          exchange  shall be made to the  transferor  Partner or the  exchanging
          Partner,  as the  case  may  be,  and in the  case  of a  Transfer  or
          assignment other than an exchange, all distributions of Available Cash
          thereafter  attributable  to  such  L.P.  Units  shall  be made to the
          transferee Partner.

ARTICLE 12.     ADMISSION OF PARTNERS.

      12.1  ADMISSION OF SUCCESSOR  GENERAL  PARTNER.  A successor to all of the
General  Partner  Interest  pursuant  to Article 11 hereof who is proposed to be
admitted as a successor  General Partner shall be admitted to the Partnership as
the General  Partner,  effective upon the Transfer.  Any such  transferee  shall
carry on the business of the Partnership without dissolution.  In each case, the
admission  shall be subject  to the  successor  General  Partner  executing  and
delivering to the  Partnership  an acceptance of all of the terms and conditions
of this  Agreement,  the  Acquisition  Agreement,  and such other  documents  or
instruments  as may be  required  to effect the  admission.  In the case of such
admission on any day other than the first day of a Partnership  Year,  all items
attributable to the General Partner  Interest for such Partnership Year shall be
allocated  between  the  transferring  General  Partner  and such  successor  as
provided in Section 11.6D.

      12.2 ADMISSION OF ADDITIONAL AND SUBSTITUTED LIMITED PARTNERS.

     A.   A Person  who  makes a  Capital  Contribution  to the  Partnership  in
          accordance  with  this  Agreement  after  the  Effective  Date  and  a
          Permitted  Transferee  pursuant to Article 11 shall be admitted to the
          Partnership as an Additional Limited Partner or a Substituted  Limited
          Partner only upon  furnishing  to the General  Partner (i) evidence of
          acceptance in form  satisfactory  to the General Partner of all of the
          terms and conditions of this Agreement and the Acquisition  Agreement,
          including,  without  limitation,  the  power of  attorney  granted  in
          Section 2.4 hereof and (ii) such other


                                     - 41 -


<PAGE>
          documents or  instruments  as may be required in the discretion of the
          General  Partner  in order to effect  such  Person's  admission  as an
          Additional Limited Partner.

     B.   Notwithstanding  anything to the  contrary in this  Section  12.2,  no
          Person  shall  be  admitted  as an  Additional  Limited  Partner  or a
          Substituted  Limited  Partner  without  the  consent  of  the  General
          Partner,  which  consent  may be  given  or  withheld  in the  General
          Partner's sole and absolute discretion. The admission of any Person as
          an Additional  Limited Partner or a Substituted  Limited Partner shall
          become  effective  on the date upon  which the name of such  Person is
          recorded on the books and records of the  Partnership,  following  the
          consent of the General Partner to such admission.

     C.   If any Additional  Limited  Partner is admitted to the  Partnership on
          any day  other  than the  first day of a  Partnership  Year,  then Net
          Income, Net Losses,  each other Tax Item and all other items allocable
          among  Partners  and  Assignees  for such  Partnership  Year  shall be
          allocated among such Additional Limited Partner and all other Partners
          and Assignees by taking into account their  varying  interests  during
          the  Partnership  Year in accordance  with Section 706(d) of the Code,
          using the interim closing of the books method.  Solely for purposes of
          making such allocations,  each of such items for the calendar month in
          which an admission of any Additional  Limited  Partner occurs shall be
          allocated  among all of the Partners  and  Assignees,  including  such
          Additional  Limited Partner.  All distributions of Available Cash with
          respect  to which the  Partnership  Record  Date is before the date of
          such admission  shall be made solely to Partners and Assignees,  other
          than  the  Additional  Limited  Partner,   and  all  distributions  of
          Available  Cash  thereafter  shall be made to all of the  Partners and
          Assignees, including such Additional Limited Partner.

     D.   A transferee who has been admitted as a Substituted Limited Partner or
          an Additional Limited Partner shall have all the rights and powers and
          be  subject  to all the  restrictions  and  liabilities  of a  Limited
          Partner under this Agreement.

      12.3 AMENDMENT OF AGREEMENT AND  CERTIFICATE OF LIMITED  PARTNERSHIP.  For
the admission to the Partnership of any Partner,  the General Partner shall take
all steps  necessary and  appropriate  under the Act to amend the records of the
Partnership  and, if necessary,  to prepare as soon as practical an amendment of
this  Agreement  (including an amendment of Appendix I) and, if required by law,
shall prepare and file an amendment to the  Certificate and may for this purpose
exercise the power of attorney granted pursuant to Section 2.4 hereof.

ARTICLE 13.     DISSOLUTION, LIQUIDATION AND TERMINATION.

      13.1 DISSOLUTION.  The Partnership shall not be dissolved by the admission
of  Substituted  Limited  Partners  or  Additional  Limited  Partners  or by the
admission of a successor  General  Partner in accordance  with the terms of this
Agreement.  In the event of the withdrawal of the General Partner, any successor
General Partner shall continue the business of the Partnership.  The Partnership
shall dissolve,  and its affairs


                                     - 42 -

<PAGE>
shall be  wound  up,  only  upon  the  first  to  occur of any of the  following
("Liquidating Events"):

     (i)  the expiration of its term as provided in Section 2.5 hereof;

     (ii) an event of withdrawal of the General  Partner,  as defined in the Act
          (other than an event of bankruptcy), unless, within 90 days after such
          event of withdrawal a majority in interest of the  remaining  Partners
          agree in writing to continue  the business of the  Partnership  and to
          the  appointment,  effective  as  of  the  date  of  withdrawal,  of a
          successor General Partner;

     (iii)from and after the date of this Agreement  through  December 31, 2048,
          an election to dissolve the Partnership  made by the General  Partner,
          with the Consent of Limited  Partners  holding  66-2/3% or more of the
          L.P. Units (including L.P. Units held by the Company);

     (iv) on or after January 1, 2049,  an election to dissolve the  Partnership
          made by the General Partner, in its sole and absolute discretion;

     (v)  entry of a decree of judicial  dissolution of the Partnership pursuant
          to the provisions of the Act;

     (vi) the sale of all or  substantially  all of the assets and properties of
          the Partnership;

     (vii)a final and non-appealable judgment is entered by a court of competent
          jurisdiction ruling that the General Partner is bankrupt or insolvent,
          or a final and  non-appealable  order for relief is entered by a court
          with appropriate  jurisdiction  against the General  Partner,  in each
          case under any federal or state  bankruptcy or insolvency  laws as now
          or  hereafter  in effect,  unless  prior to the entry of such order or
          judgment all of the  remaining  Partners  agree in writing to continue
          the business of the Partnership and to the  appointment,  effective as
          of a date prior to the date of such order or judgment, of a substitute
          General Partner.

      13.2 WINDING UP.

     A.   Upon the  occurrence of a Liquidating  Event,  the  Partnership  shall
          continue  solely for the  purposes  of  winding  up its  affairs in an
          orderly manner,  liquidating its assets,  and satisfying the claims of
          its creditors  and Partners.  No Partner shall take any action that is
          inconsistent with, or not necessary to or appropriate for, the winding
          up of the Partnership's business and affairs. The General Partner, or,
          in the event there is no remaining General Partner, any Person elected
          by  Limited  Partners  holding  at  least a  majority  of the  Limited
          Partnership  Interests (the General Partner or such other Person being
          referred  to herein as the  "Liquidator"),  shall be  responsible  for
          overseeing the winding up and dissolution of the Partnership and shall
          take full account of the  Partnership's  liabilities  and property and
          the  Partnership  property  shall  be  liquidated  as  promptly  as is
          consistent  with  obtaining the fair value  thereof,  and the


                                     - 43 -

<PAGE>
          proceeds therefrom (which may, to the extent determined by the General
          Partner,  include shares of beneficial interest or other securities of
          the Company) shall be applied and distributed in the following order:

          (i)  First,  to the payment and discharge of all of the  Partnership's
               debts and liabilities to creditors other than the Partners;

          (ii) Second,  to the payment and discharge of all of the Partnership's
               debts and liabilities to the General Partner;

          (iii)Third,  to the payment and discharge of all of the  Partnership's
               debts and liabilities to the other Partners;

          (iv) Fourth, to the General Partner and Limited Partners to the extent
               of and in accordance with the positive  balances in their Capital
               Accounts,    after   giving   effect   to   all    contributions,
               distributions, and allocations for all periods; and

          (v)  The  balance,   if  any,  to  the  Partners  according  to  their
               Percentage Interests.

The  General  Partner  shall not  receive any  additional  compensation  for any
services performed pursuant to this Article 13.

     B.   Notwithstanding  the  provisions of Section 13.2A hereof which require
          liquidation of the assets of the Partnership, but subject to the order
          of priorities  set forth therein,  if prior to or upon  dissolution of
          the  Partnership  the Liquidator  determines that an immediate sale of
          part or all of the Partnership's  assets would be impractical or would
          cause undue loss to the Partners,  the Liquidator may, in its sole and
          absolute  discretion,  defer for a reasonable  time the liquidation of
          any  asset  except  those  necessary  to  satisfy  liabilities  of the
          Partnership   (including  to  those  Partners  as  creditors)   and/or
          distribute to the Partners,  in lieu of cash, as tenants in common and
          in accordance  with the provisions of Section 13.2A hereof,  undivided
          interests  in such  Partnership  assets  as the  Liquidator  deems not
          suitable for liquidation. Any such distributions in kind shall be made
          only  if,  in  the  good  faith  judgment  of  the  Liquidator,   such
          distributions  in kind are in the best interests of the Partners,  and
          shall be subject to such  conditions  relating to the  disposition and
          management of such properties as the Liquidator  deems  reasonable and
          equitable  and to any  agreements  governing  the  operation  of  such
          properties  at such time.  The  Liquidator  shall  determine  the fair
          market value of any property distributed in kind using such reasonable
          method of valuation as it may adopt.

     C.   In the  discretion  of  the  Liquidator,  a pro  rata  portion  of the
          distributions  that would otherwise be made to the General Partner and
          Limited Partners pursuant to this Article 13 may be:

          (1)  distributed to a trust established for the benefit of the General
               Partner  and Limited  Partners  for the  purposes of  liquidating
               Partnership  assets,


                                     - 44 -


<PAGE>
               collecting  amounts  owed  to the  Partnership,  and  paying  any
               contingent  or  unforeseen  liabilities  or  obligations  of  the
               Partnership  or  the  General   Partner  arising  out  of  or  in
               connection  with the  Partnership.  The  assets of any such trust
               shall be distributed to the General Partner and Limited  Partners
               from  time  to  time,  in  the   reasonable   discretion  of  the
               Liquidator,  in the same proportions as the amount distributed to
               such  trust  by  the   Partnership   would  otherwise  have  been
               distributed to the General Partner and Limited Partners  pursuant
               to this Agreement; or

          (2)  withheld  or  escrowed  to  provide  a  reasonable   reserve  for
               Partnership  liabilities (contingent or otherwise) and to reflect
               the unrealized portion of any installment obligations owed to the
               Partnership,  provided  that such  withheld or  escrowed  amounts
               shall be distributed to the General Partner and Limited  Partners
               in the manner and order of priority set forth in Section 13.2A as
               soon as practicable.

      13.3  OBLIGATION TO CONTRIBUTE  DEFICIT.  In the event the  Partnership is
"liquidated" within the meaning Section 1.704-1(b)(2)(ii)(G) of the Regulations,
if any Partner's Adjusted  Contributions are less than zero (after giving effect
to all  contributions,  distributions,  and  allocations  for all Fiscal  Years,
including the Fiscal Year during which such  liquidation  occurs),  such Partner
shall  contribute  to the capital of the  Partnership  the amount  necessary  to
restore such Partner's  Capital Account to zero in compliance  with  Regulations
Section 1.704-1(b)(2(ii)(B)(3).

      13.4  RIGHTS OF LIMITED  PARTNERS.  Except as  otherwise  provided in this
Agreement,  each  Limited  Partner  shall  look  solely  to  the  assets  of the
Partnership for the return of its Adjusted Capital  Contributions and shall have
no right or power to  demand  or  receive  property  other  than  cash  from the
Partnership.  Except as otherwise provided in this Agreement, no Limited Partner
shall have  priority  over any other  Partner  as to the return of its  Adjusted
Capital Contributions, distributions, or allocations.

      13.5 NOTICE OF DISSOLUTION.  In the event a Liquidating Event occurs or an
event occurs that would,  but for the  provisions of an election or objection by
one or more Partners  pursuant to Section 13.1,  result in a dissolution  of the
Partnership,  the General  Partner  shall,  within 30 days  thereafter,  provide
written notice thereof to each of the Partners.

      13.6 TERMINATION OF PARTNERSHIP AND CANCELLATION OF CERTIFICATE OF LIMITED
PARTNERSHIP.  Upon the  completion  of the  liquidation  of the  Partnership'  s
assets, as provided in Section 13.2 hereof, the Partnership shall be terminated,
a certificate of  cancellation  shall be filed,  and all  qualifications  of the
Partnership as a foreign  limited  partnership in  jurisdictions  other than the
state of Delaware  shall be canceled and such other  actions as may be necessary
to terminate the Partnership shall be taken.

      13.7 REASONABLE  TIME FOR  WINDING-UP.  A reasonable time shall be allowed
for the orderly  winding-up of the business and affairs of the  Partnership  and
the


                                     - 45 -


<PAGE>
liquidation  of its assets  pursuant to Section 13.2 hereof in order to minimize
any losses otherwise attendant upon such winding-up,  and the provisions of this
Agreement  shall  remain  in effect  among the  Partners  during  the  period of
liquidation.

      13.8  WAIVER  OF  PARTITION.  Each  Partner  hereby  waives  any  right to
partition of the Partnership property.

      13.9 DEEMED  DISTRIBUTION AND  RECONTRIBUTION.  Notwithstanding  any other
provisions of this Article 13, in the event the Partnership is liquidated within
the meaning of Regulations Section 1.704-1(b)(2)(ii)(G) but no Liquidating Event
has  occurred,   the  Property  shall  not  be  liquidated,   the  Partnership's
liabilities shall not be paid or discharged, and the Partnership's affairs shall
not be wound up. Instead,  the Partnership  shall be deemed to have  distributed
the  Property in kind to the  Partners,  who shall be deemed to have assumed and
taken  subject to all  Partnership  liabilities,  all in  accordance  with their
respective Capital Accounts,  and if any Partner has an Adjusted Capital Account
Deficit  (after  giving  effect  to  all   contributions,   distributions,   and
allocations  for all Fiscal  Years,  including the Fiscal Year during which such
liquidation  occurs)  such  Partner  shall  contribute  to  the  capital  of the
Partnership  the amount  necessary to restore  such  deficit  balance to zero in
compliance  with   Regulations   Section   1.704-1(b)(2(ii)(B)(3).   Immediately
thereafter,  the Partners shall be deemed to have  recontributed the property in
kind to the Partnership, which shall be deemed to have assumed and taken subject
to all such liabilities.

ARTICLE 14.     AMENDMENT OF PARTNERSHIP AGREEMENT; MEETINGS.

      14.1 AMENDMENTS.

          A.   Amendments  to this  Agreement  may be  proposed  by the  General
               Partner  or by any  Limited  Partners  (other  than the  Company)
               holding  in  the  aggregate  25%  or  more  of  the   Partnership
               Interests.  Following  such proposal,  the General  Partner shall
               submit  any  proposed  amendment  to the  Limited  Partners.  The
               General  Partner  shall seek the written  vote of the Partners on
               the  proposed  amendment  or shall call a meeting to vote thereon
               and to transact any other business that it may deem  appropriate.
               For purposes of obtaining a written vote, the General Partner may
               require a response  within a reasonable  specified  time, but not
               less than 15 days,  and  failure to  respond in such time  period
               shall  constitute  a vote which is  consistent  with the  General
               Partner's recommendation with respect to the proposal.  Except as
               provided in Section 8.9, 13.1C, 14.1B, 14.1C or 14.1D, a proposed
               amendment  shall be  adopted  and be  effective  as an  amendment
               hereto if it is approved  by the General  Partner and it receives
               the  Consent  of  Limited  Partners  holding  50% or  more of the
               Percentage  Interests of the Limited Partners  (including Limited
               Partner Interests held by the Company).

          B.   Notwithstanding  any  provisions of Sections 8.9 and 14.1A to the
               contrary,  the General Partner shall have the power,  without the
               consent of the Limited  Partners,


                                     - 46 -


<PAGE>
               to amend this  Agreement  as may be  required  to  facilitate  or
               implement any of the following purposes:

               (1)  to  add  to  the  obligations  of  the  General  Partner  or
                    surrender any right or power granted to the General  Partner
                    or any  Affiliate of the General  Partner for the benefit of
                    the Limited Partners;

               (2)  to reflect  the  admission,  substitution,  termination,  or
                    withdrawal of Partners in accordance with this Agreement;

               (3)  to set forth the designations,  rights,  powers, duties, and
                    preferences  of the  holders of any  additional  Partnership
                    Interests issued pursuant to Section 4.3 hereof;

               (4)  to reflect a change that is of an inconsequential nature and
                    does  not  adversely  affect  the  Limited  Partners  in any
                    material  respect,  or to cure  any  ambiguity,  correct  or
                    supplement any provision in this Agreement not  inconsistent
                    with law or with other  provisions,  or make  other  changes
                    with respect to matters  arising under this  Agreement  that
                    will not be inconsistent  with law or with the provisions of
                    this Agreement; and

               (5)  to  satisfy  any  requirements,  conditions,  or  guidelines
                    contained  in  any  order,  directive,  opinion,  ruling  or
                    regulation  of a federal  or state  agency or  contained  in
                    federal or state law.

The General Partner shall provide notice to the Limited Partners when any action
under this Section 14.1B is taken.

     C.   Notwithstanding  provision of Section 14.1A and 14.1B to the contrary,
          this  Agreement  shall not be  amended  without  the  Consent  of each
          Partner  adversely  affected  if such  amendment  would (i)  convert a
          Limited  Partner's  interest in the Partnership into a General Partner
          Interest;  (ii) modify the limited liability of a Limited Partner in a
          manner  adverse to such  Limited  Partner;  (iii) alter  rights of the
          Partner to receive distributions  pursuant to Article 5 or Article 13,
          or the  allocations  specified  in  Article  6  (except  as  permitted
          pursuant to Article IV and Section  14.1B(3)  hereof);  (iv) cause the
          termination of the Partnership  prior to the time set forth in Section
          2.5 or 13.1; or (v) amend this Section  14.1C.  Further,  no amendment
          may alter the  restrictions  on the General  Partner' s authority  set
          forth in Section 13.1C without the Consent specified in that section.

      14.2 MEETINGS OF THE PARTNERS.

     A.   Meetings  of the  Partners  may be called by the  General  Partner and
          shall be called upon the  receipt by the General  Partner of a written
          request by Limited  Partners  (other than the Company)  holding 25% or
          more of the Partnership Interests.  The request shall state the nature
          of the business to be transacted.  Notice of any such meeting shall be
          given to all Partners not less than 7 days nor more than 30 days prior


                                     - 47 -


<PAGE>
          to the date of such  meeting.  Partners may vote in person or by proxy
          at such meeting.  Whenever the vote or Consent of the Limited Partners
          is permitted or required  under this  Agreement,  such vote or Consent
          may be  given  at a  meeting  of the  Partners  or  may  be  given  in
          accordance  with the  procedure  prescribed  in Section  14.1A hereof.
          Except as otherwise expressly provided in this Agreement,  the consent
          of holders of a majority of the Percentage  Interests held by Partners
          (including  Limited  Partnership  Interests held by the Company) shall
          control.

     B.   Any  action  required  or  permitted  to be taken at a meeting  of the
          Partners may be taken without a meeting if a written  consent  setting
          forth the  action so taken is signed by a majority  of the  Percentage
          Interests of the Partners  (or such other  percentage  as is expressly
          required by this Agreement).  Such consent may be in one instrument or
          in several instruments,  and shall have the same force and effect as a
          vote of a majority of the  Percentage  Interests  of the  Partners (or
          such other  percentage  as is expressly  required by this  Agreement).
          Such  consent  shall be filed with the General  Partner.  An action so
          taken  shall be  deemed to have  been  taken at a meeting  held on the
          effective date so certified.

     C.   Each Limited  Partner may  authorize  any Person or Persons to act for
          him by proxy on all matters in which a Limited  Partner is entitled to
          participate,  including  waiving  notice of any meeting,  or voting or
          participating at a meeting.  Every proxy must be signed by the Limited
          Partner or his  attorney-in-fact.  No proxy  shall be valid  after the
          expiration  of 11  months  from  the  date  thereof  unless  otherwise
          provided in the proxy.  Every proxy shall be revocable at the pleasure
          of the Limited  Partner  executing it, such revocation to be effective
          upon the  Partnership's  receipt of written notice of such  revocation
          from the Limited Partner executing such proxy.

     D.   Each meeting of the Partners shall be conducted by the General Partner
          or such other  Person as the General  Partner may appoint  pursuant to
          such rules for the conduct of the  meeting as the  General  Partner or
          such other  Person  deems  appropriate.  Meetings of  Partners  may be
          conducted  in the same manner as meetings of the  shareholders  of the
          Company and may be held at the same time, and as part of,  meetings of
          the shareholders of the Company.

ARTICLE 15.     GENERAL PROVISIONS.

      15.1 ADDRESSES AND NOTICE. Any notice,  demand, request or report required
or permitted to be given or made to a Partner or Assignee  under this  Agreement
shall be in writing and shall be deemed  given or made when  delivered in person
or when sent by first  class  United  States  mail or by other  means of written
communication  to  the  Partner  or  Assignee  (including  electronic  mail  and
electronic facsimile transmission if delivery in that manner has been confirmed)
at the  address  set forth in  Appendix  I or such  other  address  of which the
Partner shall notify the General Partner in writing.

      15.2 TITLES AND  CAPTIONS.  All  article or section  titles or captions in
this Agreement are for  convenience  only. They shall not be deemed part of this
Agreement and in no way define, limit, extend or describe the scope or intent of
any provisions


                                     - 48 -


<PAGE>
hereof. Except as specifically provided otherwise,  references to "Articles" and
"Sections" are to Articles and Sections of this Agreement.

      15.3 PRONOUNS AND PLURALS.  Whenever the context may require,  any pronoun
used in this Agreement shall include the  corresponding  masculine,  feminine or
neuter forms,  and the singular form of nouns,  pronouns and verbs shall include
the plural and vice versa.

      15.4 FURTHER ACTION.  The parties shall execute and deliver all documents,
provide  all  information  and take or  refrain  from  taking  action  as may be
necessary or appropriate to achieve the purposes of this Agreement.

      15.5 BINDING EFFECT. This Agreement shall be binding upon and inure to the
benefit  of the  parties  hereto  and their  heirs,  executors,  administrators,
successors, legal representatives and permitted assigns.

      15.6  CREDITORS.  Other than as expressly set forth herein with respect to
the  Indemnitees,  none of the  provisions  of this  Agreement  shall be for the
benefit of, or shall be enforceable by, any creditor of the Partnership.

      15.7 WAIVER. No failure by any party to insist upon the strict performance
of any covenant,  duty,  agreement or condition of this Agreement or to exercise
any right or remedy  consequent upon a breach thereof shall constitute waiver of
any such breach or any other covenant, duty, agreement or condition.

      15.8 COUNTERPARTS.  This Agreement may be executed in counterparts, all of
which  together  shall  constitute  one agreement  binding on all of the parties
hereto,  notwithstanding  that  all  such  parties  are not  signatories  to the
original  or the  same  counterpart.  Each  party  shall  become  bound  by this
Agreement immediately upon affixing its signature hereto.

      15.9  APPLICABLE  LAW. This  Agreement  shall be construed and enforced in
accordance  with and  governed  by the laws of the  State of  Delaware,  without
regard to the principles of conflicts of laws thereof.

      15.10  INVALIDITY OF PROVISIONS.  If any provision of this Agreement is or
becomes invalid, illegal or unenforceable in any respect, the validity, legality
and  enforceability  of the remaining  provisions  contained herein shall not be
affected thereby.

      15.11  ENTIRE  AGREEMENT. This Agreement contains the entire understanding
and agreement  among the Partners with respect to the subject  matter hereof and
supersedes any other prior written or oral  understandings  or agreements  among
them with respect thereto.

      15.12 GUARANTY BY THE COMPANY. The Company unconditionally and irrevocably
guarantees to the Limited Partners the performance by the General Partner


- - 49 -

<PAGE>
of the General  Partner' s obligations  under this Agreement.  This guarantee is
exclusively for the benefit of the Limited  Partners and shall not extend to the
benefit any creditor of the Partnership.


                                     - 50 -
<PAGE>


      IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as of
the date first written above.



GENERAL PARTNER:

MISSION WEST PROPERTIES
A CALIFORNIA CORPORATION


By: /s/ Michael J. Anderson
- ----------------------------
Name: Michael J. Anderson
Title:      Vice President and Chief Operating Officer


LIMITED PARTNERS:


/s/ John T. Kontrabecki
- ------------------------------
John T. Kontrabecki


/s/ Carl E. Berg
- -------------------------------
Carl E. Berg


/s/ Clyde J. Berg
- -------------------------------
Clyde J. Berg


                                     - 51 -
<PAGE>
<TABLE>
<CAPTION>


                                   APPENDIX I

         PARTNERS' [ADJUSTED] CONTRIBUTIONS AND PARTNERSHIP INTERESTS

Name and Address                 Cash             Agreed          Total           L.P.       Percentage
    of Partner               Contributions       Value of     Contribution**     Units        Interest
                                               Contributed
                                                Property**
                             -------------     -----------    --------------    -------      ----------
<S>                                                                             <C>            <C>   

GENERAL PARTNER                                                                   ___          10.91%

Mission West Properties
10050 Bandley Drive
Cupertino, CA 95014

LIMITED PARTNER                                                                

John T. Kontrabecki                                                             953,018        44.545%
2755 Campus Drive, #100
San Mateo, CA 94403

Carl E. Berg                                                                    476,509        22.2725%
10050 Bandley Drive
Cupertino, CA 95014

Clyde J. Berg                                                                   476,509        22.2725%
10050 Bandley Drive
Cupertino, CA 95014

</TABLE>

*The Company's Cash  Contribution  shall be increased by all  transaction  costs
paid  by the  Company  out of  the  Company  Cash  pursuant  to the  Acquisition
Agreement.

**To be  completed  upon  final  adjustment  of  accounts  at July 1,  1998  and
preparation of 1998 federal income tax return.


                                     - 52 -
<PAGE>


                                   APPENDIX II



                      ALLOCATIONS OF PARTNERSHIP INTERESTS



1.    ALLOCATION OF NET INCOME AND NET LOSS.

     (a)  NET INCOME.  Except as  otherwise  provided in this  Appendix  II, Net
          Income (or items  thereof)  (other than Net Income,  or items thereof,
          arising in connection with a Terminating Capital  Transaction) for any
          fiscal  year or other  applicable  period  shall be  allocated  to the
          Partners in accordance with their respective Percentage Interests.

     (b)  NET LOSS.  Except as otherwise  provided in this Appendix II, Net Loss
          (or items  thereof) of the  Partnership  for each fiscal year or other
          applicable  period shall be  allocated  to the Partners in  accordance
          with the Partners' respective  Percentage  Interests.  Notwithstanding
          the preceding sentence,  to the extent any Net Loss (or items thereof)
          allocated to a Partner  under this  subparagraph  (b) would cause such
          Partner  (hereinafter,  a  "Restricted  Partner")  to have an Adjusted
          Capital  Account  Deficit,  or  increase  the  amount  of an  existing
          Adjusted Capital Account Deficit,  as of the end of the fiscal year or
          other applicable period to which such Net Loss relates,  such Net Loss
          shall not be allocated to such Restricted Partner and instead shall be
          allocated  to  the  other  Partner(s)  (hereinafter,   the  "Permitted
          Partners")  pro  rata in  accordance  with  each  Permitted  Partner's
          Percentage Interest.

     (c)  TERMINATING  CAPITAL  TRANSACTION;  LIQUIDATION.  Allocations  of  Net
          Income or Net Loss (or items thereof) in connection with a Terminating
          Capital  Transaction or Liquidation of the Partnership  shall first be
          made so that, to the extent possible,  each Partner's  Capital Account
          balance  is equal to such  Partner's  Adjusted  Contribution,  and the
          remainder of such Net Income or Net Loss (or items  thereof)  shall be
          allocated  to  the  Partners  in  accordance  with  their   Percentage
          Interests.  Notwithstanding the preceding sentence,  to the extent any
          Net Loss (or items thereof) would be allocated to a Restricted Partner
          under this  subparagraph  (c), such Net Loss shall not be allocated to
          such  Restricted  Partner  and  instead  shall  be  allocated  to  the
          Permitted   Partners  pro  rata  in  accordance  with  each  Permitted
          Partner's Percentage Interest.

     (d)  RULES OF CONSTRUCTION.

          (1)  CAPITAL  ACCOUNT  INCREASES.  For purposes of making  allocations
               pursuant to  subparagraph  1(c) of this  Appendix II, a Partner's
               Capital  Account  balance shall be deemed to be increased by such
               Partner's  share of any  Partnership  Minimum  Gain  and  Partner
               Minimum  Gain  remaining  at the  close of the  fiscal  period in
               respect of which such allocations are being made.


                                     - 53 -


<PAGE>
          (2)  CHANGE  IN  PERCENTAGE  INTERESTS.  In the  event  any  Partner's
               Percentage  Interest changes during a fiscal year for any reason,
               including without limitation, the Transfer of any interest in the
               Partnership,  the tax  allocations  contained in this Appendix II
               shall be applied as necessary to reflect the varying interests of
               the Partners during such year.

2.    SPECIAL ALLOCATIONS.

      Notwithstanding  any  provisions  of paragraph 1 of this  Appendix II, the
following special allocations shall be made.

     (a)  MINIMUM GAIN CHARGEBACK (NONRECOURSE LIABILITIES). Except as otherwise
          provided in Section  1.704-2(f) of the Regulations,  if there is a net
          decrease in Partnership  Minimum Gain for any Partnership fiscal year,
          each Partner shall be specially  allocated items of Partnership income
          and gain for such year (and,  if  necessary,  subsequent  years) in an
          amount  equal  to  such  Partner's   share  of  the  net  decrease  in
          Partnership Minimum Gain to the extent required by Regulations Section
          1.704-2(f).  The  items  to be so  allocated  shall be  determined  in
          accordance  with Sections  1.704-2(f)  and (j)(2) of the  Regulations.
          This  subparagraph  2(a) is intended  to comply with the minimum  gain
          chargeback requirement in said section of the Regulations and shall be
          interpreted  consistently  therewith.  Allocations  pursuant  to  this
          subparagraph  2(a)  shall  be made  in  proportion  to the  respective
          amounts required to be allocated to each Partner pursuant hereto.

     (b)  PARTNER  MINIMUM  GAIN  CHARGEBACK.  Except as  otherwise  provided in
          Section  1.704-2(i)(4) of the Regulations,  if there is a net decrease
          in Partner  Minimum Gain  attributable to a Partner  Nonrecourse  Debt
          during any fiscal  year,  each  Partner who has a share of the Partner
          Minimum Gain attributable to such Partner Nonrecourse Debt, determined
          in accordance with Section 1.704- 2(i)(5) of the Regulations, shall be
          specially allocated items of Partnership income and gain for such year
          (and,  if  necessary,  subsequent  years) in an  amount  equal to that
          Partner's  share  of the net  decrease  in the  Partner  Minimum  Gain
          attributable to such Partner Nonrecourse Debt to the extent and in the
          manner required by Section 1.704-2(i) of the Regulations. The items to
          be so  allocated  shall be  determined  in  accordance  with  Sections
          1.704-2(i)(4) and (j)(2) of the Regulations. This subparagraph 2(b) is
          intended to comply with the minimum gain chargeback  requirement  with
          respect  to  Partner   Nonrecourse  Debt  contained  in  said  Section
          1.704-2(i)(4) of the Regulations and shall be interpreted consistently
          therewith.  Allocations  pursuant to this  subparagraph  2(b) shall be
          made in proportion to the respective  amounts required to be allocated
          to each Partner pursuant hereto.

     (c)  QUALIFIED INCOME OFFSET. In the event a Partner unexpectedly  receives
          any adjustments,  allocations or  distributions  described in Sections
          1.704-1(b)(2)(ii)(d)(4),  (5)  or (6) of  the  Regulations,  and  such
          Partner has an Adjusted Capital Account Deficit,  items of Partnership
          income (including gross income) and gain shall be specially  allocated
          to such Partner in an amount and manner  sufficient  to eliminate  the
          Adjusted Capital Account Deficit as quickly as possible as required by
          the


                                     - 54 -


<PAGE>
          Regulations.  This  subparagraph  2(c) is  intended  to  constitute  a
          "qualified  income offset" under Section  1.704-1(b)(2)(ii)(d)  of the
          Regulations and shall be interpreted consistently therewith.

     (d)  OTHER  CHARGEBACK OF IMPERMISSIBLE  NEGATIVE  CAPITAL ACCOUNT.  To the
          extent any Partner has an Adjusted  Capital Account Deficit at the end
          of  any  Partnership  Year,  each  such  Partner  shall  be  specially
          allocated  items of Partnership  income  (including  gross income) and
          gain in the amount of such  excess as quickly  as  possible,  provided
          that an allocation  pursuant to this  paragraph  2(d) shall be made if
          and only to the  extent  that  such  Partner  would  have an  Adjusted
          Capital  Account Deficit after all other  allocations  provided for in
          this Appendix II have been  tentatively made as if this paragraph 2(d)
          were not in the Agreement.

     (e)  NONRECOURSE DEDUCTIONS.  Nonrecourse Deductions for any fiscal year or
          other  applicable  period  shall  be  allocated  to  the  Partners  in
          accordance with their respective Percentage Interests.

     (f)  PARTNER NONRECOURSE DEDUCTIONS. Partner Nonrecourse Deductions for any
          fiscal  year or other  applicable  period  with  respect  to a Partner
          Nonrecourse  Debt shall be  specially  allocated  to the Partner  that
          bears the economic risk of loss for such Partner  Nonrecourse Debt (as
          determined  under  Sections  1.704-2(b)(4)  and  1.704-2(i)(1)  of the
          Regulations).

     (g)  INTENT  OF  ALLOCATIONS.   The  parties  intend  that  the  allocation
          provisions of this  Appendix II shall result in final Capital  Account
          balances of the Partners that  initially  are equal to each  Partner's
          Adjusted  Contribution  and are then in  proportion  to the  Partners'
          respective   Percentage   Interests,    so   that   when   liquidating
          distributions  are made in accordance  with such final Capital Account
          balances under Section 13.2A(4)  hereof,  such  distributions  will be
          able to return to each Partner its Adjusted Contribution and then will
          be  made  in  proportion  to  the  Partners'   respective   Percentage
          Interests.  To the extent that such final Capital Account  balances do
          not so reflect the  provisions of this Appendix II, income and loss of
          the Partnership for the current year and future years, as computed for
          book purposes,  shall be allocated  among the Partners so as to result
          in final Capital  Account  balances  reflecting the provisions of this
          Appendix  II, and to the extent  such  allocations  of items of income
          (including  gross  income) and  deduction  do not result in such final
          Capital Account balances, then, income and loss of the Partnership for
          prior open years,  as computed  for book  purposes  (or items of gross
          income and deduction of the  Partnership  for such years,  as computed
          for book purposes) shall be reallocated among the Partners  consistent
          with the foregoing.  This subparagraph  shall control  notwithstanding
          any  reallocation of income,  loss, or items thereof,  as computed for
          book  purposes,  by the Internal  Revenue  Service or any other taxing
          authority.

     (h)  SECTION 754  ADJUSTMENT.  To the extent an  adjustment to the adjusted
          tax basis of any asset of the  Partnership  pursuant to Section 734(b)
          of the Code or  Section  743(b) of the Code is  required  pursuant  to
          Regulations Section  1.704-1(b)(2)(iv)(m)  to be taken into account in
          determining  Capital  Accounts,  the amount of such  adjustment


                                     - 55 -

<PAGE>
          to the  Capital  Accounts  shall be treated as an item of gain (if the
          adjustment  increases  the  basis  of  the  asset)  or  loss  (if  the
          adjustment  decreases  such  basis)  and  such  gain or loss  shall be
          specially allocated among the Partners in a manner consistent with the
          manner in which each of their respective Capital Accounts are required
          to be adjusted pursuant to such section of the Regulations.

     (i)  GROSS INCOME  ALLOCATION.  There shall be  specially  allocated to the
          General  Partner an amount of Partnership  income and gain during each
          Partnership Year or portion thereof,  before any other allocations are
          made  hereunder,  which  is  equal  to  the  excess,  if  any,  of the
          cumulative  distributions  of cash made to the General  Partner  under
          Section 7.3B hereof over the  cumulative  allocations  of  Partnership
          income and gain to the General Partner pursuant to this Section (i) of
          this Appendix II.

3.    TAX ALLOCATIONS.

     (a)  ITEMS OF  INCOME  OR LOSS.  Except as is  otherwise  provided  in this
          Appendix II, an allocation of Partnership  Net Income or Net Loss to a
          Partner  shall be treated as an allocation to such Partner of the same
          share  of each  item of  income,  gain,  loss,  deduction  and item of
          tax-exempt income or Section 705(a)(2)(B) expenditure (or item treated
          as    such    expenditure     pursuant    to    Regulations    Section
          1.704-1(b)(2)(iv)(i))  ("Tax  Items")  that is taken  into  account in
          computing Net Income or Net Loss.

     (b)  SECTION 1245/1250  RECAPTURE.  If any portion of gain from the sale of
          Partnership  assets is  treated as gain  which is  ordinary  income by
          virtue of the  application  of Code Sections  1245 or 1250  ("Affected
          Gain"),  then such Affected Gain shall be allocated among the Partners
          in  the  same  proportion  that  the   depreciation  and  amortization
          deductions  giving  rise to the  Affected  Gain were  allocated.  This
          subparagraph  3(b)  shall not alter the amount of Net Income (or items
          thereof)  allocated  among the  Partners,  but merely the character of
          such Net Income (or items thereof).  For purposes hereof,  in order to
          determine  the   proportionate   allocations   of   depreciation   and
          amortization  deductions  for each  fiscal  year or  other  applicable
          period, such deductions shall be deemed allocated on the same basis as
          Net Income and Net Loss for such respective period.

     (c)  PRECONTRIBUTION GAIN. The Partnership may elect the traditional method
          of allocation  contained in Section 1.704- 3(b) of the  Regulations to
          take into account any  variation  between the  adjusted  basis and the
          fair market value of the Initial  Contributed  Property at the time of
          the contribution  ("Precontribution  Gain") on a  Property-by-Property
          basis.  By executing  this  Agreement,  each Partner  hereby agrees to
          report  income,  gain,  loss and deduction on such  Partner's  federal
          income tax return in a manner that is  consistent  with the use of the
          traditional   method  of  allocation   with  respect  to  the  Initial
          Contributed Property.  With respect to any Contributed  Property,  the
          Partnership  shall  use  any  permissible   method  contained  in  the
          Regulations  promulgated  under Section 704(c) of the Code selected by
          the General Partner, in its sole discretion,  to take into account any
          variation between the adjusted basis of such asset and the fair market
          value of such asset as of the time of the  contribution.  Each Partner
          hereby  agrees to report  income,  gain,  loss and  deduction  on such
          Partner's

                                     - 56 -



<PAGE>
          federal income tax return in a manner  consistent with the method used
          by the Partnership.

     (d)  ALLOCATIONS  RESPECTING SECTION 704(C) AND REVALUATIONS.  If any asset
          has a Gross  Asset  Value which is  different  from the  Partnership's
          adjusted basis for such asset for federal income tax purposes  because
          the  Partnership  has  revalued  such asset  pursuant  to  Regulations
          Section  1.704-1(b)(2)(iv)(f),  the  allocations of Tax Items shall be
          made in accordance  with the  principles of Section 704(c) of the Code
          and  the  Regulations  and  the  methods  of  allocation   promulgated
          thereunder,  provided,  however,  that the General Partner shall elect
          with respect to each  Initial  Contributed  Property,  to allocate the
          income,  gain,  loss and deduction with respect to such Property using
          the "traditional  method" described in Regulations  Section 1.704-3(b)
          unless the majority of the Limited Partners affected thereby otherwise
          instruct  the General  Partner.  The intent of this  Section  3(d) and
          Section 3(c) above is that each Partner who contributed to the capital
          of the Partnership a Contributed  Property will bear,  through reduced
          allocations of  depreciation,  increased  allocations of gain or other
          items, the tax detriments  associated with any  Precontribution  Gain.
          This Section 3(d) and Section 3(c) are to be interpreted  consistently
          with such intent.

     (e)  EXCESS  NONRECOURSE  LIABILITY  SAFE HARBOR.  Pursuant to  Regulations
          Section  1.752-3(a)(3),   solely  for  purposes  of  determining  each
          Partner's proportionate share of the "excess nonrecourse  liabilities"
          of the Partnership (as defined in Regulations Section  1.752-3(a)(3)),
          the Partners'  respective  interests in  Partnership  profits shall be
          determined  in accordance  with each  Partner's  Percentage  Interest;
          provided,  however,  that each Partner who has contributed an asset to
          the Partnership shall be allocated, to the extent possible, a share of
          "excess  nonrecourse  liabilities" of the Partnership which results in
          such Partner  being  allocated  nonrecourse  liabilities  in an amount
          which is at least  equal to the amount of income  pursuant  to Section
          704(c) of the Code and the  Regulations  promulgated  thereunder  (the
          "Liability  Shortfall").  In the event there is an insufficient amount
          of  nonrecourse  liabilities  to allocate to each Partner an amount of
          nonrecourse  liabilities  equal to the  Liability  Shortfall,  then an
          amount of nonrecourse  liabilities in proportion to, and to the extent
          of, the Liability Shortfall shall be allocated to each Partner.

     (f)  REFERENCES  TO  REGULATIONS.  Any reference in this Appendix II or the
          Agreement  to a provision  of proposed  and/or  temporary  Regulations
          shall,  in the event such  provision  is  modified or  renumbered,  be
          deemed  to  refer  to  the  successor  provision  as  so  modified  or
          renumbered, but only to the extent such successor provision applies to
          the  Partnership  under the  effective  date rules  applicable to such
          successor provision.

     (g)  SUCCESSOR PARTNERS.  For purposes of this Appendix II, a transferee of
          a Partnership  Interest shall be deemed to have been allocated the Net
          Income,  Net Loss and other items of Partnership  income,  gain, loss,
          deduction and credit allocable to the transferred Partnership Interest
          that previously have been allocated to the transferor Partner pursuant
          to this Agreement.


                                     - 57 -


<PAGE>
     (h)  LIMITATION TO PRESERVE REIT STATUS.  Notwithstanding  anything else in
          this  Agreement,  to  the  extent  that  the  amount  paid,  credited,
          distributed  or reimbursed by the  Partnership or any Partners to, for
          or with  respect any Partner  that is a REIT ("REIT  Partner")  or its
          officers, directors,  employees or agents, whether as a reimbursement,
          fee, expense or indemnity (a "REIT  Payment"),  would constitute gross
          income to the REIT  Partner  for  purposes  of  Section  856 (c)(2) or
          Section  856(c)(3)  of  the  Code,  then,  notwithstanding  any  other
          provision  of this  Agreement,  the amount of such REIT  Payments,  as
          selected by the General  Partner in its discretion from among items of
          potential distribution, reimbursement, fees, expenses and indemnities,
          shall be reduced for any Fiscal Year so that the REIT Payments,  as so
          reduced, to, for or with respect to such REIT Partner shall not exceed
          the lesser of:

          (i)  an  amount  equal  to  the  excess,  if  any,  of  (x)  four  and
               nine-tenths percent (4.9%) of the REIT Partner total gross income
               (but  excluding  the amount of any REIT  Payments) for the Fiscal
               Year that is described in subsections  (A) through (H) of Section
               856(c)(2) over (y) the amount of gross income (within the meaning
               of Section  856(c)(2))  derived by the REIT  Partner from sources
               other than those  described  in  subsections  (A)  through (H) of
               Section  856(c)(2)  (but not  including  the  amount  of any REIT
               Payments); or

          (ii) an amount  equal to the  excess,  if any,  of (x) 24% of the REIT
               Partner's  total gross  income (but  excluding  the amount of any
               REIT   Payments)  for  the  Fiscal  Year  that  is  described  in
               subsections  (A)  through (I) of Section  856(c)(3)  over (y) the
               amount of gross income (within the meaning of Section  856(c)(3))
               derived  by the  REIT  Partner  from  sources  other  than  those
               described  in  subsections  (A) through (I) of Section  856(c)(3)
               (but not including the amount of any REIT Payments);

PROVIDED,  HOWEVER,  that REIT  payments  in excess of the  amounts set forth in
clauses  (i) and (ii) above may be made if the General  Partner,  as a condition
precedent,  obtains an opinion of tax  counsel  that the  receipt of such excess
amounts shall not adversely  affect the REIT  Partner's  ability to qualify as a
REIT.  To the extent  that REIT  Payments  may not be made in a Fiscal Year as a
consequence  of the  limitations  set  forth in this  Section  3(h),  such  REIT
Payments  shall  carry over and shall be  treated  as  arising in the  following
Fiscal Year.  Nothing in this  Section 3(h) shall permit the General  Partner to
allocate  income of the  Partnership to any Partner in excess of the income that
would  otherwise  be  allocated  to it under  Article 6  without  regard to this
Section 3(h). The purpose of the  limitations  contained in this Section 3(h) is
to prevent any REIT  Partner from failing to qualify as a REIT under the Code by
reason  of  such  REIT  Partner's  share  of  items,  including   distributions,
reimbursements, fees, expenses or indemnities, receivable directly or indirectly
from the Partnership or the Partners, and this Section 3(h) shall be interpreted
and applied to effectuate such purpose.


                                     - 58 -



                            EXCHANGE RIGHTS AGREEMENT

     This Exchange Rights  Agreement  (this  "Agreement") is made as of December
29, 1998 by and among Mission West  Properties,  a California  corporation  (the
"Company"),   each  of  Mission  West  Properties,   L.P.,  a  Delaware  limited
partnership  ("MWP"),  Mission  West  Properties,  L.P.  I, a  Delaware  limited
partnership  ("MWP I"),  Mission West  Properties,  L.P. II, a Delaware  limited
partnership ("MWP II") and Mission West Properties, L.P. III, a Delaware limited
partnership  (MWP  III,  and  collectively  with  MWP,  MWP I and  MWP  II,  the
"Operating  Partnership"),  and each of the limited  partners  in the  Operating
Partnership listed on the signature pages hereto (the "Limited Partners").

     WHEREAS,  the Limited Partners own all of the units of limited  partnership
interest of the Operating Partnership ("L.P. Units") currently outstanding;

     WHEREAS,  pursuant to an Acquisition Agreement dated as of May 14, 1998 and
amended  by an  Amendment  to  Acquisition  Agreement  dated as of July 1,  1998
(collectively  the  "Acquisition  Agreement")  among the Company,  the Operating
Partnership  and the  Contributing  Entities  (as that  term is  defined  in the
Acquisition  Agreement),  the  Company  has  acquired  the  general  partnership
interests in the  Operating  Partnership  in exchange for  $35,200,000,  and the
Operating  Partnership  will acquire certain  properties  from the  Contributing
Entities in exchange for L.P. Units and the shareholders and/or limited partners
of the Contributing Entities will thereby become Limited Partners and parties to
an Operating Partnership Agreement of the Operating Partnership. For purposes of
this  Agreement,  L.P.  Units shall include L.P.  Units  outstanding on the date
hereof,  together with any L.P. Units of the Operating  Partnership issued after
the date hereof.

     WHEREAS,  pursuant to the  Acquisition  Agreement  the  parties  hereto are
entering into this  Agreement to provide for the rights of the Limited  Partners
to (i) tender L.P.  Units in exchange for shares of the  Company's  common stock
(the "Common  Stock"),  cash or a  combination  of Common Stock and cash, on the
terms and conditions set forth herein (the "Exchange  Rights") and (ii) register
shares of Common Stock;

     NOW,  THEREFORE,  in  consideration of the premises and the mutual covenant
set forth herein, the parties hereto agree as follows:

1.    Definitions.

For purposes of this Agreement:

     "Affiliate"  shall mean (a) with  respect  to any  individual  person,  any
member of the  immediate  family of such person or a trust  established  for the
benefit of such  member,  or (b) with respect to any entity,  any person  which,
directly  or  indirectly  through  one  or  more  intermediaries   controls,  is
controlled by, or is under common control with any such entity.

     "Beneficially  Owning"  means owning Common Stock  directly,  indirectly or
constructively  by a person or entity through the  application of Section 318(a)
of the Code, as modified by Section 856(d)(5) of the Code, or Section 544 of the
Code, as modified by Section  856(h) of the Code.  The term  "Beneficially  Own"
shall have a correlative meaning.

     "Code"  means the Internal  Revenue Code of 1986,  as amended and in effect
from time to time, as interpreted by the applicable regulations thereunder.

     "Common Stock" means the shares of Common Stock, no par value per share, of
the Company or any shares of voting  securities  into which the Common Stock may
be  reclassified  or  converted  or for  which  shares  of  Common  Stock may be
exchanged  in any  transaction  made  applicable  or available to all holders of
Common Stock as a class.

     "Closing  Price" shall mean,  with respect to a particular  date,  the last
reported  sales price regular way on such date or, in case no such reported sale
takes  place on such date,  the  average of the  reported  closing bid and asked
prices  regular way on such date,  in either case on the AMEX,  or if the Common
Stock is not then  listed  or  admitted  to  trading  on such  Exchange,  on the
principal national securities  exchange,  the Nasdaq or any comparable system on
which the Common  Stock is then  listed or  admitted  to trading or, if not then
listed or admitted to trading on any national securities exchange, the Nasdaq or
any comparable  system.  The closing sale price on such date of the Common Stock
or if the Common  Stock is not then quoted on Nasdaq or any  comparable  system,
the Board of Trustees of the Trust and the Board of Directors of the Corporation
shall in good faith determine the Closing Price.

     "Exchange  Factor"  shall  mean  the  ratio  at which  L.P.  Units  will be
exchangeable  into Common Stock. The Exchange Factor shall initially be 1:1. The
initial Exchange Factor shall be subject to adjustment as provided in Section 7.

     "Ownership  Limit" has the meaning set forth in the Restated  Articles,  as
amended from time to time, or in the  Acquisition  Agreement with respect to the
Berg Group (as defined therein).

     "Partnership  Agreement" shall mean the Operating Partnership's Amended and
Restated Agreement of Limited Partnership, as amended from time to time.

     "REIT  Requirements"  shall mean the  requirements  for the  Company to (i)
qualify  as a REIT  under  the Code and the rules  and  regulations  promulgated
thereunder and (ii) avoid any federal income or excise tax liability.

     "Restated   Articles"   means  the   Amended  and   Restated   Articles  of
Incorporation  of the Mission  West  Properties,  Inc.,  a Maryland  corporation
("Mission  West-Maryland"),  as amended from time to time after the date of this
Agreement.  Mission  West-Maryland  will  be the  successor  corporation  to the
Company upon the  consummation  of a merger by the Company with and into Mission
West-Maryland for the purpose of redomiciling the Company in Maryland.

2. Right to Tender L.P. Units.

     2.1  General.  Upon  the  terms  and  subject  to the  conditions  of  this
Agreement,  after the first  anniversary  hereof each holder of L.P. Units shall
have the right to tender to the Company outstanding L.P. Units;  provided,  that
prior to the first  anniversary  of this  Agreement,  holders of L.P.  Units may
tender L.P. Units solely in connection  with (i) the  registration  of shares of
Common Stock acquired upon  exchanging L.P. Units for Common Stock pursuant to a
registered  public  offering  of Common  Stock  initiated  by the Company to the
extent of 25% of the total shares sold in the offering (subject to the Ownership
Limit and the  underwriter's  unlimited right to reduce the participation of all
selling  shareholders)  and (ii) the  registration  of an  aggregate  of 500,000
shares of Common Stock acquired upon  exchanging  L.P. Units into such shares of
Common  Stock on a Form S-3,  or any  successor  form  thereto  (subject  to the
Ownership Limit). Any registration of Common Stock received in exchange for L.P.
Units  pursuant to this Section 2 shall  comply in all  respects  with Section 8
hereof.

     2.2  Certain  Limitations.  Notwithstanding  any  other  provision  of this
Agreement  to the  contrary,  no Common Stock or cash shall be issued or paid in
respect of any tender of L.P.  Units (i) if the right to tender  L.P.  Units and
receive Common Stock or cash would result in the Company not satisfying the REIT
Requirements in any respect or would result in any person or entity Beneficially
Owning Common Stock exceeding the applicable  Ownership Limit, (ii) prior to the
expiration or termination of the waiting period  applicable to such exchange and
issuance, if any, under the Hart-Scott-Rodino Antitrust Improvement Act of 1976,
as it may be amended  from time to time,  or (iii)  prior to the  receipt of all
governmental and regulatory approvals which are required to be obtained prior to
such tender and issuance or payment.  Such holder  shall,  as a condition to any
tender of L.P.  Units which would result in any Limited  Partner,  together with
such Limited Partner's  Affiliates,  Beneficially  Owning, in the aggregate more
than shares of  outstanding  Common Stock  exceeding  the  applicable  Ownership
Limit, give not less than ninety (90) days' written notice to the Company of its
intent to tender L.P.  Units.  In the event that the  ability to receive  Common
Stock or cash would result in the Company not satisfying  the REIT  Requirements
in any  respect  or would  result in any  person or entity  Beneficially  Owning
Common Stock  exceeding the Ownership  Limit,  and as a result thereof no Common
Stock or cash may be  issued or paid in  respect  of any  tender  of L.P.  Units
pursuant to subsection (i) above,  the parties hereto shall use their respective
best efforts to restructure  the terms and provisions of this Agreement (and, if
necessary,  the Partnership  Agreement),  or to agree to terms and provisions in
addition to such terms and  provisions,  so as to provide to each such party the
same substantive rights (or substantive rights as close thereto as is reasonably
practicable) as those provided by this Agreement and the Partnership Agreement.

     2.3 Nature of the Offer.  The right to exchange L.P. Units pursuant to this
Agreement  constitutes a continuous  offer and may not be withdrawn,  amended or
modified by the  Company  without  the prior  written  consent of each holder of
outstanding  L.P.  Units  adversely  affected by such  withdrawal,  amendment or
modification;  provided that any withdrawal, amendment or modification that does
not  adversely  affect  any holder of  outstanding  L.P.  Units may be  effected
without the consent of such holder.

3.    Acceptance of Tender; Election of Method of Payment for Tendered L.P.
      Units.

     3.1 Form of Tender.  Upon the terms and subject to the  conditions  of this
Agreement,  the Company shall accept L.P. Units validly  tendered in proper form
and meeting all of the  requirements of this Agreement.  In order for L.P. Units
to be validly tendered pursuant to this Agreement, the registered holder thereof
shall deliver to the Company, at the address provided pursuant to Section 12 (i)
a completed and duly executed  Letter of Transmittal in the form attached hereto
as Exhibit A (the "Letter of Transmittal")  and any other documents  required by
the Letter of Transmittal and (ii) a calculation,  to the best knowledge of such
registered holder after due inquiry (together with such supporting documentation
as the  Company may  reasonably  request),  of the  maximum  number of shares of
Common Stock that may be issued to such registered holder without causing either
(x) the Company to not satisfy the REIT  Requirements  in any respect or (y) any
person or entity to  Beneficially  Own Common Stock in excess of the  applicable
Ownership  Limit. The Company shall make all  determinations  as to the validity
and form of any tender of L.P.  Units in accordance  with the provisions of this
Agreement and upon rejection of a tender shall give the tendering holder written
notice of such rejection, which shall include the reasons therefor.

     3.2  Revocability.  Unless otherwise  agreed to by the Company,  tenders of
L.P.  Units pursuant to this  Agreement  shall be  irrevocable  and shall not be
subject to  withdrawal or  modification;  provided that if the Company makes the
Stock  Election (as defined  below) with respect to a tender,  then within three
(3) days after such Stock Election the tendering holder may elect to revoke such
tender so long as (i) no public disclosure of such tender has been made prior to
such  revocation and (ii) such tendering  holder  reimburses the Company for all
reasonable costs and expenses incurred in connection with such tender.

     3.3 Company  Elections.  Within fifteen (15) days after the valid tender of
L.P. Units pursuant to this Agreement, the Company shall make an election to pay
for  such  L.P.  Units  by  delivering  either  (i)  Common  Stock  (the  "Stock
Election"),  (ii) cash (the "Cash  Election") or (iii) a  combination  of Common
Stock and cash (the "Combined Election").

4.    Stock Election.

     4.1 Stock Exchange. If with respect to any tender of L.P. Units pursuant to
this Agreement,  the Company makes the Stock  Election,  then within twenty (20)
days after such tender the Company  shall  deliver to the  tendering  holder one
share of Common  Stock for each  L.P.  Unit  validly  tendered  pursuant  to the
provisions of this Agreement, as adjusted pursuant to Section 7.

     4.2  Fractional   Shares.  No  fractional  shares  or  scrip   representing
fractional  shares shall be issued upon exchange of L.P.  Units pursuant to this
Agreement. If more than one Letter of Transmittal shall be delivered at one time
by the same  holder,  the number of full shares  which  shall be  issuable  upon
exchange of the L.P.  Units  tendered  thereby shall be computed on the basis of
the aggregate number of L.P. Units so tendered. Instead of any fractional shares
which would otherwise be issuable upon exchange of any L.P.  Units,  the Company
shall pay a cash  adjustment  in respect of such  fraction in an amount equal to
the same fraction of the Closing Price.

     4.3 Taxes. If a holder exchanges L.P. Units pursuant to this Agreement, the
Company shall pay any documentary, stamp or similar issue or transfer tax due on
any issue of Common Stock upon such exchange.  Such holder,  however,  shall (i)
pay to the Company the amount of any  additional  documentary,  stamp or similar
issue or transfer tax which is due (or shall  establish to the  satisfaction  of
the Company the payment  thereof) as a result of Common  Stock being issued in a
name other than the name of such holder and (ii) be  responsible  for all income
or other taxes as a result of such exchange.

5.    Cash Election.

     If with respect to any tender of L.P. Units pursuant to this Agreement, the
Company makes the Cash Election,  then within thirty (30) days after such tender
the Company shall pay to the tendering  holder an aggregate  amount of cash (the
"Aggregate  Cash  Payment")  equal to the product of (i) the number of shares of
Common  Stock which would have been  delivered to such holder if the Company had
made the Stock Election with respect to such tender and (ii) the average Closing
Price for the ten (10)  trading day period  ending one (1) day prior to the date
of such tender.

6.    Combined Election.

     If with respect to any tender of L.P. Units pursuant to this Agreement, the
Company  shall make the Combined  Election,  then within  thirty (30) days after
such  tender the Company  shall (i) notify the  tending  holder of the number of
such tendered L.P. Units which will be exchanged for cash (the "Cash Units") and
the number of such tendered L.P.  Units which will be exchanged for Common Stock
(the "Stock Units") as adjusted pursuant to Section 7, (ii) pay to the tendering
holder, in respect of each Cash Unit validly tendered pursuant to the provisions
of this Agreement,  an amount of cash equal to the average Closing Price for the
ten  trading-day  period ending one (1) day prior to the date of such tender and
(iii) deliver to the  tendering  holder one share of Common Stock for each Stock
Unit validly tendered pursuant to the provisions of this Agreement.

The  provisions  of Sections  4.2 and 4.3 of this  Agreement  shall apply to the
issuance of Common Stock pursuant to this Section 6.

7.    Exchange Factor; Adjustments To Exchange Factor.

     7.1  Exchange  Factor.  Pursuant  to  Sections  4, 5 and 6, each L.P.  Unit
initially shall be exchangeable, without the payment of additional consideration
by the  holder  thereof,  into one (1) share of Common  Stock or the  equivalent
thereof in cash. The number of L.P. Units  exchangeable  for one share of Common
Stock  ("Exchange  Factor")  shall  be  subject  to  adjustment  as  hereinafter
provided.

     7.2 Adjustment for Stock Splits, Dividends and Combinations. If the Company
at any  time or  from  time to  time  after  the  date  hereof  shall  effect  a
subdivision  of the  outstanding  Common  Stock,  or shall fix a record date for
determination of shareholders  entitled to receive a dividend of Common Stock on
its outstanding  Common Stock,  the Exchange  Factor then in effect  immediately
before  such  subdivision  or as of such  record  date shall be  proportionately
reduced,  and if the Corporation shall combine the outstanding  shares of Common
Stock,  the Exchange  Factor then in effect  immediately  before the combination
shall be proportionately  increased. Any adjustment under this Section 7.2 shall
become  effective  at the  close of  business  on the date  the  subdivision  or
combination  becomes effective or on the record date for determining  holders of
any class of securities entitled to receive the dividend;  provided that if such
record  date shall have been fixed and such  dividend  shall not have been fully
paid on the date fixed therefor,  the adjustment previously made in the Exchange
Factor that became  effective  on such record date shall be  cancelled as of the
close of business on such record date, and thereafter the Exchange  Factor shall
be  adjusted  pursuant to this  Section 7.2 as of the time of actual  payment of
such dividend.

     7.3  Adjustments for Other  Dividends and  Distributions.  In the event the
Company at any time or from time to time  shall  make or issue,  or fix a record
date for the  determination  of holders of Common Stock  entitled to receive,  a
dividend or other  distribution  payable in securities of the Company other than
shares of Common Stock,  then and in each such event  provision shall be made so
that the holders of L.P. Units shall receive upon exchange thereof,  in addition
to the number of shares of Common Stock receivable thereupon, the amount of such
securities  of the Company that they would have  received  had their L.P.  Units
been exchanged into Common Stock on the date of such event, giving effect to all
adjustments  called for with respect to such  securities  during the period from
the date of such event to and including the exchange date.

     7.4  Adjustment for  Reclassification,  Exchange and  Substitution.  If the
Common Stock  issuable upon exchange of the L.P. Units shall be changed into the
same or different  number of shares of any class or series of stock,  whether by
capital reorganization,  reclassification or otherwise (other than a subdivision
or combination of shares or stock dividend  provided for in Sections 7.1 and 7.2
above, or a merger, consolidation,  sale of assets or other transaction provided
for in Section 7.3  below),  then and in each such event the holder of each L.P.
Unit shall have the right  thereafter  to exchange  such share into the kind and
amount of shares of stock and other securities and property receivable upon such
reorganization,  reclassification  or other  change by  holders of the number of
shares of Common  Stock  into which  such L.P.  Unit  might have been  exchanged
immediately  prior  to such  reorganization,  reclassification  or  change,  all
subject to further adjustment as provided herein.

     7.5  Adjustment  for  Merger or  Reorganization,  etc.  In the event of any
merger or consolidation  of the Company with or into another  corporation or the
conveyance of all or  substantially  all of the assets of the Company to another
corporation,  each L.P. Unit shall thereafter be exchangeable into the number of
shares of stock or other  securities or property to which a holder of the number
of shares of Common Stock of the Company  deliverable upon exchange of such L.P.
Units would have been entitled upon such  consolidation,  merger or  conveyance;
and, in any such case,  appropriate  adjustment  (as  determined by the Board of
Directors)  shall be made in the application of the provisions  herein set forth
with  respect to the rights and interest  thereafter  of the holders of the L.P.
Units,  to the end that the  provisions set forth herein  (including  provisions
with respect to changes in and other  adjustments of the Exchange  Factor) shall
thereafter be  applicable,  as nearly as  reasonably  may be, in relation to any
share of stock or other property  thereafter  deliverable  upon exchange of L.P.
Units.

     7.6 No Impairment.  The Company will not, by amendment of this Agreement or
through  any  reorganization,   transfer  of  assets,   consolidation,   merger,
dissolution, issue or sale of securities or any other voluntary action, avoid or
seek to avoid the  observance or  performance of any of the terms to be observed
or performed under this Section 7 and in the taking of all such action as may be
necessary or appropriate in order to protect the Exchange  Rights of the holders
of L.P. Units against impairment.

     7.7 Certificate as to  Adjustments.  Upon the occurrence of each adjustment
or  readjustment  of the Exchange Factor pursuant to this Section 7, the Company
at its expense  shall  promptly  compute  such  adjustment  or  readjustment  in
accordance  with the terms  hereof and furnish to each holder of L.P.  Units,  a
certificate  setting forth such adjustment or readjustment and showing in detail
the facts upon which such  adjustment  or  readjustment  is based.  The  Company
shall, upon the written request at any time of any holder of L.P. Units, furnish
or cause to be furnished  to such holder a like  certificate  setting  forth (i)
such  adjustments and  readjustments,  (ii) the ratio at which exchanges of L.P.
Units would be made at the time,  and (iii) the number of shares of Common Stock
and the amount,  if any, of other  property  which at the time would be received
upon exchange of such holder's L.P. Units.

8.    Registration Rights.

     The Company shall provide the following  registration rights to the Limited
Partners:

     8.1 Definitions. For purposes of this Section 8:

          (a) The term "register",  "registered",  and "registration" refer to a
     registration  effected by preparing and filing a registration  statement or
     similar  document in compliance with the Securities Act and the declaration
     or ordering of effectiveness of such registration statement or document;

          (b) The term  "Registrable  Securities"  means (1) the Common Stock of
     the Company issued upon exchange of the L.P.  Units (the "Exchange  Stock")
     and (2) any Common  Stock of the Company  issued as (or  issuable  upon the
     conversion or exercise of any warrant,  right,  or other  security which is
     issued as) a dividend or other distribution with respect to, or in exchange
     for or in  replacement  of, such  Exchange  Stock,  excluding in all cases,
     however,  any  Registrable  Securities sold by a person in a transaction in
     which  such  person's  rights  under  this  Agreement  or  the  Partnership
     Agreement  were not  assigned  in  conformity  with this  Agreement  or the
     Partnership Agreement;

          (c)  For  this  purpose,  "Registration  Expenses"  mean  any  and all
     expenses of the Company incident to performance of or compliance with this

          Agreement,  including,  without limitation, (i) all SEC and securities
     exchange  registration  and filing fees,  (ii) all printing,  messenger and
     deliver  expenses,  (iii) all fees and expenses incurred in connection with
     the listing of the Registrable  Securities on any securities exchange,  and
     the  fees  and  disbursements  of  counsel  for  the  Company  and  of  its
     independent public accountants,  but excluding  underwriting  discounts and
     commissions and transfer taxes, if any;

          (d) The term  "Form  S-3" or "Form  S-11"  means  such form  under the
     Securities  Act as in effect on the date  hereof or any  registration  form
     under the  Securities  Act  subsequently  adopted by the SEC which  permits
     inclusion or incorporation of substantial information by reference to other
     documents filed by the Company with the SEC.

     8.2 Company  Registration.  If (but  without any  obligation  to do so) the
Company proposes to register (including for this purpose a registration effected
by the Company for  shareholders  other than the  Limited  Partners)  any of its
stock or other  securities  under the  Securities  Act of 1933,  as amended (the
"Securities  Act") in  connection  with the public  offering of such  securities
solely  for cash  (other  than a  registration  relating  solely  to the sale of
securities to  participants  in a Company stock plan, or a  registration  on any
form which  does not  include  substantially  the same  information  as would be
required to be included in a  registration  statement  covering  the sale of the
Registrable  Securities),  the Company shall,  at such time,  promptly give each
Limited Partner written notice of such registration. Upon the written request of
each Limited  Partner given within twenty (20) days after mailing of such notice
by the Company in  accordance  with  Section 12 of this  Agreement,  the Company
shall,  subject to the provisions of paragraph 8.9 below, cause to be registered
under the  Securities  Act the  Registrable  Securities  that each such  Limited
Partner has  requested to be registered to the extent of 25% of the total shares
to be sold in the offering.

     8.3 Shelf Registration. At any time, from time to time, following the first
anniversary of the date of the Agreement,  upon the request of Limited  Partners
holding at least five percent (5%) of the Registrable Securities ("Participating
Limited  Partners"),  the Company  shall file,  and use its best efforts to have
declared effective under the Securities Act by the sixtieth (60th) day after the
date the  Company  receives  such  request,  a  "shelf"  registration  statement
pursuant  to the  requirements  of the  Securities  Act on Form  S-3 or  another
appropriate form pursuant to Rule 415 under the Securities Act (or any successor
rule or regulation)  covering the  disposition of at least 200,000 shares of the
Registrable   Securities   in  one  or  more   underwritten   offerings,   block
transactions, broker transactions, at-the-market transactions, and in such other
manner or manners as may be specified by such  Participating  Limited  Partners,
provided,  however , that the Company is only  obligated  to effect one (1) such
registration  in any twelve  (12)-month  period.  The Company shall use its best
efforts to keep such "shelf" registration  continuously effective as long as the
delivery of a prospectus is required under the Securities Act in connection with
the  disposition  of  the  Registrable  Securities  registered  thereby  and  in
furtherance  of such  obligation,  shall  supplement or amend such  registration
statement if, as, and when required by the rules,  regulations and  instructions
applicable  to the form  used by the  Company  for such  registration  or by the
Securities Act or by any other rules and  regulations  thereunder  applicable to
"shelf"  registrations.  The Company  shall  provide the  Participating  Limited
Partners  with  written  notice  of the  filing  of  such  "shelf"  registration
statement within five (5) days after such registration  statement has been filed
with the Securities and Exchange  Commission ("SEC"). If the Company delivers to
the Participating  Limited Partners a certificate signed by the President of the
Company stating that in the good faith judgment of the Board of Directors of the
Company,  it would be  detrimental  to the Company or its  shareholders  for the
Participating  Limited  Partners  to offer or sell,  or to continue to offer and
sell, any Registrable  Securities under the shelf  registration  statement for a
period set forth in such certificate not to exceed one hundred twenty (120) days
and commencing no earlier than ten (10) days after the date such  certificate is
so delivered (the "Blackout  Period"),  the Limited  Partners shall not offer or
sell any Registrable  Securities during such Blackout Period,  provided that the
Company shall have the right to deliver such a certificate  only once during any
twelve (12) month period.

     8.4 Requests for Registration.

          (a)  Notwithstanding  the  limitations set forth in Section 8.3 above,
     subject to the  Ownership  Limit and the  discretion  of the  Company,  all
     Limited  Partners in the  aggregate  may request the  registration  of L.P.
     Units prior to the first anniversary of the Closing Date in connection with
     the  registration  of an aggregate  of 500,000  shares of Common Stock on a
     Form  S-3 or  another  appropriate  form  pursuant  to Rule 415  under  the
     Securities Act (or any successor rule or regulation),  upon converting L.P.
     Units into shares of Common Stock.  Such  registration  shall be subject to
     the Blackout Period described in Section 8.3.

          (b) If the  Company  shall  receive a  written  request  from  Limited
     Partners  holding  no fewer  that  500,000  L. P.  Units  (the  "Initiating
     Holders")  and the  Company  is not then  eligible  to file a  registration
     statement on Form S-3 or another  appropriate  form pursuant to Rule 415 of
     the Securities Act (or any successor rule or regulation) in accordance with
     the  requirements  of Section 8.3, the Company shall  promptly give written
     notice of such request to all Limited  Partners  and shall,  subject to the
     limitations  set forth  below,  effect as soon as  practicable,  and in any
     event with in one hundred twenty (120) days of the receipt of such request,
     a  registration  on Form S-11,  or an equivalent  form, of all  Registrable
     Securities  which the  Limited  Partners  request to be  registered  within
     twenty (20) days of the mailing of such notice by the Company in accordance
     with Section 12 hereof in an underwritten public offering.  The underwriter
     will be selected by a majority  in interest of the  Initiating  Holders and
     shall  be an  underwriter  of  nationally  recognized  standing  reasonably
     acceptable to the Company.  In such event, the right of any Limited Partner
     to  include  such  Limited   Partner's   Registrable   Securities  in  such
     registration shall be conditioned upon such Limited Partner's participation
     in  such   underwriting  and  the  inclusion  of  such  Limited   Partner's
     Registrable  Securities in the  underwriting to the extent provided herein.
     All Limited Partners  proposing to distribute their securities through such
     underwriting  shall  (together with the Company) enter into an underwriting
     agreement in customary form with the underwriter or  underwriters  selected
     for such underwriting.  Notwithstanding any other provision of this Section
     8.4(b), if the underwriter  advises the Initiating  Holders in writing that
     marketing  factors  require  a  limitation  of the  number  of shares to be
     underwritten,  then the  Initiating  Holders  shall so advise  all  Limited
     Partners  proposing  to  distribute   Registrable  Securities  which  would
     otherwise  be  underwritten  pursuant  hereto,  and the number of shares of
     Registrable  Securities that may be included in the  underwriting  shall be
     allocated among all Limited Partners,  including the Initiating Holders, in
     proportion  (as  nearly  as  practicable)  to  the  amount  of  Registrable
     Securities of the Company owned by each Holder;  provided however, that the
     number  of  shares  of  Registrable  Securities  to  be  included  in  such
     underwriting shall not be reduced unless all other securities to be offered
     for sale by any  security  holder  are  first  entirely  excluded  from the
     underwriting. In addition, any registration pursuant to this Section 8.4(b)
     shall be subject to the Blackout Period described in Section 8.3.

     8.5 Obligations of the Parties.

          (a)  Whenever  required  under  Section  8.2, 8.3 or 8.4 to effect the
     registration  of  any  Registrable   Securities,   the  Company  shall,  as
     expeditiously as reasonably possible:

               (i) prepare and file with the SEC a  registration  statement with
          respect to such  Registrable  Securities  and use its best  efforts to
          cause such registration  statement to become effective,  and, upon the
          request  of  a  Limited  Partner,  keep  such  registration  statement
          effective  until  the  completion  of  the  sale  of  the  Registrable
          Securities  subject  to the  registration  statement,  subject  to the
          provisions of Section 8.3;

               (ii)  prepare  and  file  with  the  SEC  such   amendments   and
          supplements to such registration  statement and the prospectus used in
          connection  with such  registration  statement  as may be necessary to
          comply with the  provisions of the  Securities Act with respect to the
          disposition of all securities covered by such registration statement;

               (iii)furnish to the Limited  Partners such numbers of copies of a
          prospectus, including a preliminary prospectus, in conformity with the
          requirements  of the  Act,  and  such  other  documents  as  they  may
          reasonably   request  in  order  to  facilitate  the   disposition  of
          Registrable Securities owned by the Limited Partners;

               (iv) use its best efforts to register and qualify the  securities
          covered by such registration  statement under such other securities or
          Blue Sky laws of such  jurisdictions as shall be reasonably  requested
          by the  Limited  Partner,  provided  that  the  Company  shall  not be
          required in connection  therewith or as a condition thereto to qualify
          to do business  or to file a general  consent to service of process in
          any such states or jurisdictions;

               (v) in the event of any underwritten public offering,  enter into
          and perform its obligations under an underwriting  agreement, in usual
          and customary  form,  with the managing  underwriter of such offering.
          The Limited  Partner shall also enter into and perform its obligations
          under such an agreement; and

               (vi)  notify the Limited  Partners at any time when a  prospectus
          relating  thereto is required to be delivered under the Securities Act
          of the  happening  of any event as a result  of which  the  prospectus
          included in such registration  statement,  as then in effect, includes
          an untrue  statement  of a material  fact or omits to state a material
          fact required to be stated therein or necessary to make the statements
          therein not misleading in light of the circumstances then existing.

          (b) When  requested by Limited  Partners in connection  with a "shelf"
     registration  pursuant to Section 8.3, the Company shall assist the Limited
     Partners in obtaining a firm  commitment  underwriting  agreement  for such
     resales from a qualified  investment  banking  firm,  as  determined by the
     Company.

          (c)  The  Limited   Partners   agree  that  in  connection   with  any
     registration  of the  Registrable  Securities  by the  Company  pursuant to
     Section 8.2, 8.3 or 8.4, except as permitted under Regulation M promulgated
     under the Exchange Act, if the  Registrable  Securities of Holder are being
     distributed pursuant to such registration,  the Limited Partners shall not,
     directly  or  indirectly,  by the use of any  means or  instrumentality  of
     interstate  commerce,  or the  mails,  or  any  facility  of  any  national
     securities  exchange,  either alone or with one or more persons, bid for or
     purchase  for any  account in which any Limited  Partner  has a  beneficial
     interest,  any shares of the Common Stock of the Company until such Limited
     Partner  has  completed  the  Limited   Partner's   participation  in  such
     distribution.

     8.6  Furnish  Information.  It  shall  be  a  condition  precedent  to  the
obligations  of the Company to take any action  pursuant to Sections 8.2, 8.3 or
8.4 with respect to the  Registrable  Securities  of a Limited  Partner that the
Limited Partner shall furnish to the Company such information  regarding itself,
the Registrable Securities held by it, and the intended method of disposition of
such securities as shall be required to effect the  registration of such Limited
Partner's Registrable Securities.

     8.7 Expenses of Requested Registrations.  In connection with registrations,
filings,  or  qualifications  pursuant to Sections 8.3 or 8.4, the Company shall
pay  all  Registration   Expenses,   other  than  selling  expenses   (including
commissions and separate counsel' fees of the Limited Partners).

     8.8 Expenses of Company  Registration.  The Company  shall bear and pay all
expenses incurred by the Company in connection with any registration, filing, or
qualification of Registrable  Securities with respect to registrations  pursuant
to  Section  8.2  and  the  closing  of the  sale  thereof,  including  (without
limitation) all registration, filing, qualification,  printer's fees, attorneys'
and accounting fees and expenses;  provided, however, that the Company shall not
be  responsible  for  underwriting  discounts and  commissions  or other charges
relating to the Registrable Securities,  or for the Limited Partners' attorneys'
fees  and  expenses  or any  taxes  imposed  with  respect  to  the  Registrable
Securities on the sale and transfer thereof.

     8.9 Underwriting Requirements. In connection with any offering involving an
underwriting  of shares of the Company's  capital stock pursuant to Section 8.2,
Limited  Partners  may  include  up to 25% of the shares  sold in the  offering,
provided  however,  that the Company shall not be required under Section 8.2, to
include any of the Limited Partners' Registrable Securities in such underwriting
unless the Limited Partner accepts the terms of the  underwriting as agreed upon
between  the Company and the  underwriters  selected by it (or by other  persons
entitled  to select the  underwriters),  and then only in such  quantity  as the
underwriters  determine in their sole discretion will not jeopardize the success
of the offering by the Company.  If the total  amount of  securities,  including
Registrable  Securities,  requested by the Participating  Limited Partners to be
included in such offering  exceeds the amount of  securities  sold other than by
the  Company  that the  underwriters  determine  in  their  sole  discretion  is
compatible  with the success of the  offering,  the Company shall be required to
include  in  the  offering  only  that  number  of  such  securities,  including
Registrable   Securities,   which  the  underwriters  determine  in  their  sole
discretion  will not jeopardize  the success of the offering (the  securities so
included to be apportioned pro rata among the selling shareholders  according to
the total amount of  securities  entitled to be included  therein  owned by each
selling  shareholder or in such other proportions as shall mutually be agreed to
by such  selling  shareholders).  For  purposes of the  preceding  parenthetical
concerning  apportionment,  for any selling shareholder which is a Participating
Limited  Partner  of  Registrable  Securities  and  which  is a  partnership  or
corporation, the partners, retired partners, and shareholders of such holder, or
the estates and family members of any such partners and retired partners and any
trusts for the benefit of any of the  foregoing  persons shall be deemed to be a
single  "selling  shareholder",  and any pro rata reduction with respect to such
"selling  shareholder"  shall  be based  upon the  aggregate  amount  of  shares
carrying  registration rights owned by all entities and individuals  included in
such "selling shareholder", as defined in this sentence.

     8.10 Delay of  Registration.  The Limited Partners shall not have any right
to obtain or seek an  injunction  restraining  or  otherwise  delaying  any such
registration as the result of any  controversy  that might arise with respect to
the interpretation or implementation of any provision of this Section 8.

     8.11 Indemnification.  In the event any Registrable Securities are included
in a registration statement under this Section 8:

          (a) To the extent  permitted by law, the Company  will  indemnify  and
     hold harmless a Limited  Partner,  any  underwriter (as defined in the Act)
     for a Limited  Partner  and each  person,  if any,  who  controls a Limited
     Partner or  underwriter  within the meaning of the Act or the Exchange Act,
     against any losses,  claims,  damages, or liabilities (joint or several) to
     which they may become  subject under the Act, or the Exchange Act, or other
     federal  or  state  law,  insofar  as  such  losses,  claims,  damages,  or
     liabilities (or actions in respect  thereof) arise out of or are based upon
     any of the following  statements,  omissions or violations  (collectively a
     "Violation"):  (i) any untrue  statement or alleged  untrue  statement of a
     material  fact  contained in such  registration  statement,  including  any
     preliminary  prospectus  or  final  prospectus  contained  therein  or  any
     amendments or supplements thereto, (ii) the omission or alleged omission to
     state therein a material fact required to be stated  therein,  or necessary
     to make the statements  therein not  misleading,  or (iii) any violation or
     alleged  violation by the Company of the Act,  the Exchange  Act, any state
     securities law or any rule or regulation  promulgated under the Act, or the
     Exchange  Act or any state  securities  law;  and the Company will pay to a
     Limited Partner,  underwriter or controlling person, as incurred, any legal
     or  other  expenses   reasonably   incurred  by  them  in  connection  with
     investigating  or defending any such loss,  claim,  damage,  liability,  or
     action;  provided,  however, that the indemnity agreement contained in this
     subsection  (a) shall not apply to amounts paid in  settlement  of any such
     loss, claim,  damage,  liability,  or action if such settlement is effected
     without the consent of the Company (which consent shall not be unreasonably
     withheld),  nor shall the Company be liable to any  indemnitee for any such
     loss, claim, damage,  liability, or action to the extent that it arises out
     of or is based  upon a  Violation  which  occurs  in  reliance  upon and in
     conformity with written information  furnished by such indemnitee expressly
     for use in connection with such registration.

          (b) To the extent  permitted by law, a Limited  Partner will indemnify
     and hold harmless the Company, each of its directors,  each of its officers
     who has  signed  the  registration  statement,  each  person,  if any,  who
     controls the Company  within the meaning of the Act, any  underwriter,  any
     other shareholder selling securities in such registration statement and any
     controlling  person of any such underwriter or other  shareholder,  against
     any losses, claims, damages, or liabilities (joint or several) to which any
     of the foregoing persons may become subject, under the Act, or the Exchange
     Act,  or other  federal  or state  law,  insofar  as such  losses,  claims,
     damages, or liabilities (or actions in respect thereto) arise out of or are
     based  upon any  Violation,  in each  case to the  extent  (and only to the
     extent) that such Violation  occurs in reliance upon and in conformity with
     written  information  furnished by a Limited  Partner  expressly for use in
     connection  with such  registration;  and a Limited  Partner  will pay,  as
     incurred,  any legal or other  expenses  reasonably  incurred by any person
     intended to be indemnified  pursuant to this  subsection (b), in connection
     with investigating or defending any such loss, claim, damage, liability, or
     action;  provided,  however, that the indemnity agreement contained in this
     subsection  (b) shall not apply to amounts paid in  settlement  of any such
     loss,  claim,  damage,  liability or action if such  settlement is effected
     without the consent of the a Limited  Partner,  which  consent shall not be
     unreasonably withheld; and provided,  that, in no event shall any indemnity
     obligation  under this  subsection  (b)  (together  with any  obligation to
     contribute  under  subsection  (d))  exceed  the  gross  proceeds  from the
     offering received by a Limited Partner.

          (c) Promptly after receipt by an indemnified  party under this Section
     8.11  of  notice  of  the   commencement  of  any  action   (including  any
     governmental  action),  such indemnified  party will, if a claim in respect
     thereof is to be made  against any  indemnifying  party under this  Section
     8.11,   deliver  to  the  indemnifying   party  a  written  notice  of  the
     commencement  thereof  and the  indemnifying  party shall have the right to
     participate  in,  and,  to the extent the  indemnifying  party so  desires,
     jointly with any other indemnifying party similarly noticed,  to assume the
     defense  thereof  with  counsel  mutually   satisfactory  to  the  parties;
     provided,  however,  that an  indemnified  party  (together  with all other
     indemnified  parties  which  may be  represented  without  conflict  by one
     counsel) shall have the right to retain one separate counsel, with the fees
     and expenses to be paid by the  indemnifying  party, if  representation  of
     such indemnified  party by the counsel  retained by the indemnifying  party
     would be  inappropriate  due to actual  or  potential  differing  interests
     between  such  indemnified  party and any other party  represented  by such
     counsel in such  proceeding.  The failure to deliver  written notice to the
     indemnifying party within a reasonable time of the commencement of any such
     action, if prejudicial to its ability to defend such action,  shall relieve
     such  indemnifying  party of any liability to the  indemnified  party under
     this Section  8.11,  but the omission so to deliver  written  notice to the
     indemnifying party will not relieve it of any liability that it may have to
     any indemnified party otherwise than under this Section 8.11.

          (d) If the  indemnification  provided for in this Section 8.11 is held
     by a court of competent  jurisdiction  to be  unavailable to an indemnified
     party  with  respect  to any loss,  liability,  claim,  damage,  or expense
     referred to therein,  then the indemnifying  party, in lieu of indemnifying
     such indemnified  party  hereunder,  shall contribute to the amount paid or
     payable  by such  indemnified  party as a result of such  loss,  liability,
     claim,  damage,  or expense in such proportion as is appropriate to reflect
     the  relative  fault of the  indemnifying  party on the one hand and of the
     indemnified  party  on the  other in  connection  with  the  statements  or
     omissions that resulted in such loss, liability,  claim, damage, or expense
     as well as any other relevant equitable considerations.  The relative fault
     of the indemnifying  party and of the indemnified party shall be determined
     by reference to, among other things,  whether the untrue or alleged  untrue
     statement  of a material  fact or the  omission  to state a  material  fact
     relates  to  information  supplied  by  the  indemnifying  party  or by the
     indemnified  party and the parties' relative intent,  knowledge,  access to
     information,  and  opportunity  to  correct or prevent  such  statement  or
     omission.  In  no  event  shall  any  a  Limited  Partner's  obligation  to
     contribute  under this  subsection  (d)  (together  with any  obligation to
     indemnify under subsection (b)) exceed the gross proceeds from the offering
     received by such a Limited Partner.

          (e) Notwithstanding  the foregoing,  to the extent that the provisions
     on indemnification and contribution contained in the underwriting agreement
     entered into in  connection  with an  underwritten  public  offering are in
     conflict with the foregoing provisions,  the provisions in the underwriting
     agreement shall control.

          (f) The  obligations  of the Company and a Limited  Partner under this
     Section 8.11 shall survive the  completion  of any offering of  Registrable
     Securities in a registration  statement  filed pursuant to Section 8.2, 8.3
     or 8.4, and otherwise.

     8.12 Reports Under  Securities  Exchange Act of 1934. With a view to making
available to the Limited Partners the benefits of Rule 144 promulgated under the
Securities  Act and any other rule or regulation of the SEC that may at any time
permit the  Limited  Partners  to sell  securities  of the Company to the public
without  registration  or pursuant to a  registration  on Form S-3,  the Company
agrees to use reasonable efforts to:

          (a) make and keep  public  information  available,  as those terms are
     understood and defined in SEC Rule 144, at all times;

          (b) take such action as is necessary to enable the Limited Partners to
     utilize  Form  S-3  for  the  sale  of  Registrable  Securities  as soon as
     permitted pursuant to this Section 8 after the date of the Agreement;

          (c)  file  with the SEC in a  timely  manner  all  reports  and  other
     documents required of the Company under the Securities Act and the Exchange
     Act of 1934 as amended (the "Exchange Act"); and

          (d) furnish to a Limited  Partner,  so long as a Limited  Partner owns
     any Registrable Securities,  forthwith upon request (i) a written statement
     by the Company that it has complied with the reporting  requirements of SEC
     Rule 144, the Securities Act, and the Exchange Act, or that it qualifies as
     a registrant  whose  securities may be resold  pursuant to Form S-3 (at any
     time  after it so  qualifies),  (ii) a copy of the most  recent  annual  or
     quarterly  report of the Company and such other  reports and  documents  so
     filed by the Company, and (iii) such other information as may be reasonably
     requested in availing a Limited  Partner of any rule or  regulation  of the
     SEC which permits the selling of any such securities  without  registration
     or pursuant to such form.

     8.13 Exercise of  Registration  Rights.  The rights to cause the Company to
register Registrable Securities pursuant to this Section 8 may be exercised by a
Limited  Partner or by any transferee or assignee of such  securities who, after
such  assignment  or  transfer,  holds at least  500,000  shares of  Registrable
Securities (subject to appropriate adjustment for stock splits, stock dividends,
combinations,  and other  recapitalizations),  provided, in the case of any such
transferee  or assignee,  the Company is,  within a  reasonable  time after such
transfer,  furnished  with  written  notice  of the  name  and  address  of such
transferee  or  assignee  and  the   securities   with  respect  to  which  such
registration rights are being assigned and such transferee or assignee agrees to
comply  with all  obligations  imposed  on a Limited  Partner  under  applicable
provisions of this Section 8; and provided,  further, that such assignment shall
be effective only if immediately following such transfer the further disposition
of such  securities  by the  transferee  or  assignee  is  restricted  under the
Securities  Act.  For the  purposes  of  determining  the  number  of  shares of
Registrable  Securities  held by a  transferee  or  assignee,  the  holdings  of
transferees and assignees of a partnership who are partners or retired  partners
of such partnership  (including spouses and ancestors,  lineal descendants,  and
siblings of such partners or spouses who acquire Registrable Securities by gift,
will,  or  intestate  succession)  shall  be  aggregated  together  and with the
partnership;  and provided  that all  assignees  and  transferees  who would not
qualify  individually for an assignment of the  registration  rights as provided
herein shall have a single  attorney-in-fact  for the purpose of exercising  any
rights,  receiving notices, or taking any action under applicable  provisions of
this Section 8.

     8.14 "Market Stand-Off" Agreement.  The Limited Partners hereby agree that,
during the period of  duration  (not to exceed one  hundred  eighty  (180) days)
specified by the Company and an underwriter of Common Stock or other  securities
of the Company,  following the  effective  date of any  registered  underwritten
public  offering  of the  Company's  securities,  it shall  not,  to the  extent
requested  by the Company and such  underwriter,  directly or  indirectly  sell,
offer to sell, contract to sell (including, without limitation, any short sale),
grant any option to purchase or otherwise  transfer or dispose of (other than to
donees who agree to be similarly bound) any securities of the Company held by it
at  any  time  during  such  period  except   Common  Stock   included  in  such
registration; provided, however, that all officers and directors of the Company,
and all other persons with registration  rights (whether or not pursuant to this
Agreement)  enter into  similar  agreements.  In order to enforce the  foregoing
covenant, the Company may impose stop-transfer  instructions with respect to the
Registrable  Securities of the Limited Partners (and the shares or securities of
every other person subject to the foregoing  restriction)  until the end of such
period.

     8.15 Delayed Payment Units Registration. If at any time after one year from
the date of this  Agreement,  (a) a Limited  Partner  validly tenders L.P. Units
pursuant to the  provisions of this  Agreement,  (b) the Company makes the Stock
Election or the Combined  Election with respect to such tender,  (c) as a result
of the Ownership  Limit such Limited  Partner  cannot receive the full number of
shares of Common Stock otherwise  issuable to such Limited  Partner  pursuant to
such tender and such election  (without  giving effect to the Ownership  Limit),
then:

          (i) subject to the other terms and conditions of this Agreement,  such
     Limited Partner shall be entitled to receive the number of shares of Common
     Stock which it can receive  pursuant to such tender,  such election and the
     Ownership Limit; and

          (ii)  if  such  Limited  Partner  shall  make a  written  request  for
     registration  of Common Stock pursuant to this Section 8, the Company shall
     cause  there to be  filed  with the SEC a  registration  statement  and the
     Company  shall  register  and sell  pursuant  thereto a number of shares of
     Common Stock equal to the number of shares of such  Unissued  Common Stock.
     Within  two (2)  business  days  after the  receipt  by the  Company of the
     proceeds of any sale (after underwriting discounts and commissions) of such
     Common  Stock  pursuant to such  registration,  the Company  shall pay such
     proceeds to the  tendering  holder of the Delayed  Payment  Units,  in full
     payment for the tender of such Delayed Payment Units.

          (iii)For purposes of this Section 8.15, the number of shares of Common
     Stock which such Limited Partner cannot receive  pursuant to such tender as
     a result of the  Ownership  Limit are referred to as the  "Unissued  Common
     Stock" and the L.P. Units tendered in respect of such Unissued Common Stock
     are referred to as the "Delayed Payment Units."

9.    Representations of Tendering Holder.

     Each tender of L.P. Units shall constitute a representation and warranty by
the tendering holder of each of the  representations and warranties set forth in
the form of  Letter of  Transmittal.  Without  limiting  the  generality  of the
foregoing,  unless,  at the time of a tender for exchange of L.P. Units pursuant
to this  Agreement,  a  registration  statement  relating to Common  Stock to be
delivered upon such tender is effective  under the  Securities  Act, such tender
shall  constitute a  representation  and warranty by the tendering holder to the
Company that such tendering  holder (i) is an "accredited  investor"  within the
meaning of Rule 501 under the Securities Act, (ii) has sufficient  knowledge and
experience  in  financial  and  business  matters and in  investing  in entities
similar  to the  Operating  Partnership  and  the  Company,  so as to be able to
evaluate the risks and merits of its investment in the Operating Partnership and
the Company and it is able financially to bear the risks thereof,  (iii) has had
an opportunity to discuss the business,  management and financial affairs of the
Operating  Partnership  and the Company  with the  management  of the  Operating
Partnership and the Company and (iv)  understands  that the Common Stock has not
been  registered  under the  Securities  Act by reason  of their  issuance  in a
transaction  exempt from the  registration  requirements  of the  Securities Act
pursuant to Section 4(2) thereof or Rule 506  promulgated  under the  Securities
Act and  such  Common  Stock  must  be held  indefinitely  unless  a  subsequent
disposition  thereof is registered under the Securities Act and applicable state
securities laws or is exempt from such registration.

10.   Status of Tendering Holder.

     Until the holder of L.P. Units tendered  pursuant to this Agreement becomes
a holder of record of the Common Stock issued in exchange  therefor (in the case
of a Stock  Election or a Combined  Election)  or until such holder has received
cash  in  exchange  therefor  (in  the  case of a Cash  Election  or a  Combined
Election),  such holder shall  continue to hold and own such L.P.  Units for all
purposes  of the  Partnership  Agreement.  In the case of a Stock  Election or a
Combined Election,  no such holder shall have any rights as a shareholder of the
Company in respect of such Common  Stock  until such holder  becomes a holder of
record of such Common Stock.

11. Reservation of Shares; Closing of Transfer Books.

     11.1 The Company  shall reserve and shall at all times have reserved out of
its authorized by but unissued Common Stock, solely for the purpose of effecting
the exchange of L.P. Units pursuant to this  Agreement,  enough shares of Common
Stock to permit the  exchange of the then  outstanding  L.P.  Units.  All Common
Stock which may be issued upon exchange of L.P.  Units shall be validly  issued,
fully paid and  nonassessable  and free from all taxes,  liens and charges  with
respect to the  issuance  thereof  other than income taxes  resulting  from such
exchange.

     11.2 The Company  shall not close its  transfer  books so as to prevent the
timely issuance of Common Stock pursuant to this Agreement.

12.   General.

     12.1 Survival. The covenants, representations and warranties of the parties
to this Agreement shall survive the execution and delivery of this Agreement.

     12.2  Binding  Effect;  Benefits;  Assignment.  All of the  terms  of  this
Agreement  shall be binding upon,  inure to the benefit of and be enforceable by
and against the successors and permitted  assigns of the Company,  the Operating
Partnership and all the Limited Partners. Nothing in this Agreement,  express or
implied,  is  intended  to confer  upon any other  person any rights or remedies
under or by  reason of this  Agreement  except as  expressly  indicated  in this
Agreement.  The Company agrees that persons  admitted as limited partners in the
Operating  Partnership (i.e., any one of the limited partnerships therein) shall
be entitled to become parties to this Agreement upon execution of an appropriate
addendum hereto and consent by the Operating Partnership.

     12.3 Further  Action.  Each of the parties to this Agreement  shall execute
such  documents  and  other  papers  and take  such  further  actions  as may be
reasonably  required or desirable to carry out the  provisions of this Agreement
and the  transactions  contemplated  in this  Agreement or, at or after the date
hereof,  to evidence the consummation of the  transactions  contemplated in this
Agreement.  Each of the parties to this  Agreement  shall  take,  or cause to be
taken,  all actions and to do, or cause to be done, all other things  necessary,
proper or advisable to consummate  and make effective as promptly as practicable
the  transactions  contemplated by this Agreement,  to satisfy the conditions to
this Agreement and to obtain in a timely manner all necessary waivers, consents,
and approvals and to effect all necessary registrations and filings.

     12.4  Governing  Law. This  Agreement  shall be governed by the laws of the
State of California  without  regard to its  principles  governing  conflicts of
laws.

     12.5 Notices. All notices, requests, demands and other communications to be
given pursuant to the terms of this  Agreement  shall be in writing and shall be
delivered  personally,  telecopied  or sent by nationally  recognized  overnight
delivery  service,  and shall be deemed  given and  effective  when so delivered
personally, telecopied or sent, as follows:

          (a) If to the Company:

                     Mission West Properties
                     10050 Bandley Drive
                     Cupertino, California 95014
                     Telecopier:  408/725-1626
                     Attention:  Carl E. Berg

               with a copy to:

                     Graham & James LLP
                     600 Hansen Way
                     Palo Alto, California 94304
                     Telecopier:  650/856-3619
                     Attention:  Alan B. Kalin

          (b) If to the Limited Partners:

     At the  address  of  such  Limited  Partner  set  forth  in the  applicable
     Operating Partnership Agreement.

     Each party may change its  address or  telecopier  number by prior  written
     notice to the other parties.

     12.6  Counterparts.  This  Agreement  may be executed in  counterparts  and
transmitted by facsimile,  each of which when so executed and transmitted  shall
be deemed to be an original, and such counterparts shall together constitute one
and the same instrument.

     12.7  Expenses.  The Company and the Limited  Partners  shall pay their own
respective expenses, costs and fees (including,  without limitation,  attorneys'
and accountants' fees) incurred in connection with the negotiation, preparation,
execution  and  delivery  of  this  Agreement  and  the   consummation   of  the
transactions contemplated by this Agreement.

     12.8 Entire  Agreement.  This Agreement sets forth the entire agreement and
understanding  of the  Company  and the  Limited  Partners  with  respect to the
transactions contemplated by this Agreement, and supersede all prior agreements,
arrangements  and  understandings   relating  to  the  subject  matter  of  this
Agreement.

     12.9  Amendment  and  Waiver.  This  Agreement  may be  amended,  modified,
superseded  or  canceled,  and  any of the  terms,  covenants,  representations,
warranties  or conditions  of this  Agreement  may be waived,  only by a written
instrument  executed  by the  Company  and a majority in interest of the Limited
Partners  or,  in the case of a waiver,  by or on  behalf  of the party  waiving
compliance.  The failure of any party at any time to require  performance of any
provision of this Agreement  shall in no manner affect the right at a later time
to enforce the same. No waiver by any party of any condition or of any breach of
any term, covenant,  representation or warranty contained in this Agreement,  in
any one or more  instances,  shall be deemed to be or  construed as a further or
continuing  waiver of any such  condition  or of any  breach  of any such  term,
covenant, representation or warranty or any other term, covenant, representation
or warranty set forth in this Agreement.

     12.10  Headings.  The  headings  of the  sections  and  paragraphs  of this
agreement  have been inserted for  convenience or reference only and shall in no
way  restrict  or  otherwise  modify  any of the  terms  or  provisions  of this
Agreement.

     12.11 No Third Party Beneficiaries.  Nothing in this Agreement,  express or
implied, is intended to or shall (a) confer on any person other than the parties
hereto  and  their  respective  successors  or  assigns  any  rights  (including
third-party beneficiary rights),  remedies,  obligations or liabilities under or
by reason of this  Agreement or (b) constitute the parties hereto as partners or
as  participants  in a joint  venture.  This  Agreement  shall not provide third
parties with any remedy,  claim,  liability,  reimbursement,  cause of action or
other right in excess of those existing  without  reference to the terms of this
Agreement.  No third party shall have any right,  independent  of any right that
exists  irrespective of this Agreement,  under or granted by this Agreement,  to
bring any suit at law or equity  for any  matter  governed  by or subject to the
provisions of this Agreement.

     12.12 Rules of  Construction.  The parties hereto agree that they have been
represented  by counsel during the  negotiation  and execution of this Agreement
and,  therefore,  waive  the  application  of any  law,  regulation  or  rule of
construction  providing that ambiguities in any agreement or other document will
be construed against the party drafting such agreement or document.

     12.13  Severability.  In the event that any provision of this  Agreement or
the  application  thereof,  becomes  or is  declared  by a  court  of  competent
jurisdiction  to be  illegal,  void  or  unenforceable,  the  remainder  of this
Agreement  will  continue in full force and effect and the  application  of such
provision to other persons or circumstances will be interpreted so as reasonably
to effect the intent of the parties hereto.

                 [Remainder of page intentionally left blank]



<PAGE>


                 Signature Pages of Exchange Rights Agreement

     In  Witness  Whereof,  the  parties  hereto  have  hereunto  executed  this
Agreement as of the first date written above, and a party's  signature hereon in
any capacity shall  constitute  such party's  execution of this Agreement in all
capacities which the party holds for purposes of this Agreement.

Mission West Properties, a California Corporation

      By: 
         ________________________________                                 
         Michael J. Anderson
         Its: Vice President and Chief Operating Officer


Mission West Properties, L.P., a Delaware limited partnership

      By: Mission West Properties, a California corporation
      Its: General Partner

         By: 
            _____________________________                              
            Michael J. Anderson
         Its: Vice President and Chief Operating Officer


1981 Kara Ann Berg Trust

      By: 
         ________________________________                                 
         Clyde J. Berg, Trustee


Sonya L. Berg Trust

      By:
         ________________________________                                 
         Thelmer Aalgaard, Trustee


Sherri L. Berg Trust

      By: 
         ________________________________                               
         Thelmer Aalgaard, Trustee


Michael L. Knapp

      By:  
         ________________________________
         Michael L. Knapp


Triangle Development Company, a California General Partnership

      By: Berg Venture I
      Its: General Partner

         By: 
           ______________________________                   
           John T. Kontrabecki
         Its: General Partner


Berg Venture II, a California Limited Partnership

      By: 
         ________________________________                                
         John T. Kontrabecki
      Its: General Partner


Baccarat Fremont Developers, LLC, a California Limited Liability Company

      By: 
         ________________________________                               
         Michael L. Knapp
      Its: Managing Member


Baccarat Cambrian, a California General Partnership

      By: 
         ________________________________                     
         Carl E. Berg
      Its: General Partner


Berg & Berg Enterprises Inc., a California Corporation

      By: 
         ________________________________                        
         Carl E. Berg
      Its: President


De Anza Office Partners, a California general partnership

      By: 
         ________________________________                                 
         Carl E. Berg
      Its: General Partner


Mission West Properties, L.P. I, a Delaware limited partnership

      By: Mission West Properties
      Its: General Partner

         By: 
            _____________________________                              
            Michael J. Anderson
         Its: Vice President and Chief Operating Officer


Berg Living Trust UTA dated May 1, 1981

      By: 
         ________________________________                                 
         Carl E. Berg
         Its:  Trustee


      By: 
         ________________________________                               
         Mary Ann Berg
         Its:  Trustee


Clyde J. Berg, Trustee, 1995 Clyde J. Berg Revocable Trust, dated April 4, 1995

      By:  
         ________________________________                                
         Clyde J. Berg
         Its:  Trustee


 Clyde J. Berg, Trustee, Carl Berg Child's Trust UTA dated June 2, 1978

      By:             
         ________________________________                     
         Clyde J. Berg
         Its:  Trustee


Mission West Properties, L.P. II, a Delaware limited partnership

      By: Mission West Properties Limited Liability
      Its: General Partner

         By:
            _____________________________                  
            Michael J. Anderson
         Its: Vice President and Chief Operating Officer



________________________________
Carl E. Berg


       
________________________________
Mary Ann Berg



________________________________
Clyde J. Berg




Mission West Properties, L.P. III, a Delaware Limited Partnership

      By: Mission West Properties, a California Corporation
      Its: General Partner

         By: 
            _____________________________                  
            Michael J. Anderson
         Its: Vice President and Chief Operating Officer



________________________________
John T. Kontrabecki



                      PENDING PROJECTS ACQUISTION AGREEMENT



     This Pending Project Acquisition Agreement ("Agreement") is entered into as
of December  29, 1998 by and  between  Mission  West  Properties,  a  California
corporation (the "Company"),  Mission West Properties,  L.P., a Delaware limited
partnership  ("MWP"),  Mission  West  Properties,  L.P.  I, a  Delaware  limited
partnership  ("MWP I"),  Mission West  Properties,  L.P. II, a Delaware  limited
partnership ("MWP II") and Mission West Properties, L.P. III, a Delaware limited
partnership  ("MWP III";  MWP,  MWP I, MWP II and MWP III are referred to as the
"Operating Partnership";  the Company and the Operating Partnership are referred
to  collectively as the  "Purchaser"),  on the one hand, and the individuals and
entities  listed on Appendix I who own the  properties  set forth  opposite such
individuals' and entities' names thereon (the "Sellers") on the other hand.

                                    RECITALS

     A. The Sellers  are the owners of certain  real  property  located in Santa
Clara County, California, and described in attached EXHIBIT A, together with all
rights,  privileges,  easements, and appurtenances  (collectively,  the "Pending
Projects");  and  all  personal  property,   entitlements,   licenses,  permits,
development rights, air rights,  authorizations,  certificates,  surveys, plans,
specifications,  reports, studies, test results and all unexpired warranties and
guaranties  given  by  unaffiliated  third  parties  owned  by the  Sellers  and
pertaining to or used  exclusively in connection with the Pending  Projects (the
"Personal  Property");  (the Pending  Projects and  Personal  Property  shall be
collectively referred to herein as the "Pending Projects").

     B. In connection  with the  Acquisition  Agreement dated as of May 14, 1998
(the  "Acquisition  Agreement"),  to which the Purchaser and the Sellers all are
parties, the Operating  Partnership has agreed to issue L.P. Units to all of the
limited partners  therein,  the Company has agreed to become the general partner
of the Operating  Partnership,  and the Company has agreed to permit  holders of
L.P.  Units to exchange them for shares of the Company's  common stock  ("Common
Stock") under certain circumstances.

     C. The  Operating  Partnership  is  governed by the  Operating  Partnership
Agreement and the Acquisition Agreement.

     D. The  Purchaser  desires to acquire the Pending  Projects and the Sellers
desire to convey  the  Pending  Projects  on the  terms and  conditions  of this
Agreement,  and  pursuant  to the  Acquisition  Agreement  have  agreed that the
Company or the  Operating  Partnership  shall  acquire  each of the 12 buildings
comprising  the Pending  Projects as soon as such  building  (each an  "acquired
property" herein) has been completed and fully leased by issuing additional L.P.
Units to the  Sellers  at a value of $4.50  per L.P.  Unit,  or at the  Sellers'
option, they may receive cash or a combination of cash and L.P. Units.

                                    AGREEMENT

     For good and valuable consideration,  the receipt and adequacy of which are
acknowledged, the parties agree as follows:

     1. ACQUISITION. At the Closing Date (as defined herein) for the acquisition
of each of the buildings  included in the Pending Projects,  the Sellers who own
that building (as indicated on Appendix I) (the  "Participating  Sellers") agree
to convey,  and the Purchaser  agrees to acquire,  such property  subject to the
terms  and  conditions  of  this  Agreement.  The  Sellers'  shall  appoint  one
representative  to act as their agent in  connection  with the  acquisition  and
conveyance  of each  acquired  property  (the  "Sellers'  Representative").  The
Sellers'  Representative  is  authorized  to receive  written  notices  from the
Purchaser on behalf of all of the Sellers of such property.

     2. ACQUISITION  VALUE. The acquisition  value for the conveyance of each of
the  buildings in the Pending  Projects will be the amount set forth in Appendix
I, subject to adjustment if the actual  average  monthly  rental per square foot
for the term of the lease or leases in effect  with  respect  thereto  as of the
Closing  Date (as defined  herein)  differs from the  projected  rental rate set
forth in Appendix I. Consequently, the actual Acquisition Value will be equal to
the  acquisition  value set forth in Appendix I  multiplied  by the ratio of the
actual  average  monthly  rental rate per square foot  divided by the  projected
rental rate set forth in Appendix I (the "Acquisition Value"):

     3. CONSIDERATION.

     (a) ITEMS. The Purchaser shall provide the following items of consideration
to the Sellers upon the Purchaser's acquisition of the Pending Projects:

     (i) the  Acquisition  Value of each building as set forth in Appendix I, as
such  amount  shall be adjusted  as of the  Closing  Date (as  defined  herein),
payable,  at the election of the Participating  Sellers,  as provided in Section
3(b), (A) in cash in an amount equal to (x) such Acquisition Value minus (y) the
sum of the principal  amount of all debt  encumbering  the building  (other than
assessment  leins) as of the Closing Date, and all accrued,  unpaid interest and
other financing charges  applicable to such debt (the "Net Acquisition  Value"),
or (ii) through the issuance to the Participating Sellers of that number of L.P.
Units (with each  receiving his, her or its  proportionate  share based on their
ownership  interests in the acquired property) equal to the quotient obtained by
dividing the Net Acquisition Value by $4.50;

     (ii) the assumption of all indebtedness  encumbering the acquired  property
as of the Closing Date; and

     (iii)assumption and payment of all prorations and reimbursements  which the
Purchaser is obligated to pay pursuant to Section 10.

     (b) The  Participating  Sellers  shall decide among  themselves  whether to
receive  cash or L.P.  Units,  or both,  upon their  conveyance  of the acquired
property to the Purchaser, and through one representative who they select, shall
deliver to the Purchaser,  a written notice of election specifying the number of
L.P.  Units,  the  amount of cash,  or the  number  and  amount  of each,  to be
delivered  to each  Participating  Seller  not  less  than 10 days  prior to the
Closing Date.

     (c) The  purchaser  of each  acquired  property  at the  Closing may be the
Operating Partnership or the Company; provided that pursuant to the terms of the
Operating  Partnership  Agreement the Company shall  contribute such property to
the Operating  Partnership in exchange for additional  partnership  interests as
provided  therein.  The Purchaser  shall notify the Sellers which entity will be
acquiring the property not less than 3 days prior to the Closing Date.

     4. CLOSING DATE. The  acquisition of each building in the Pending  Projects
shall  occur  on the  3rd  business  day  after  the  last to  occur  of (i) the
completion of the building and receipt of required occupancy  permits;  (ii) the
execution of written leases with respect to 100% of the rentable  square footage
in such  building,  (iii)  satisfaction  of all closing  conditions set forth in
Section 5 and 6 as set forth in  certificates  which each party shall deliver to
the other,  and (iv) the  Participating  Sellers'  delivery to the  Purchaser of
their  election as to the form of  consideration  they intend to receive for the
acquired property (the "Closing Date").

     5. CONDITIONS TO THE PURCHASER'S PERFORMANCE. The Purchaser's obligation to
acquire any of the buildings included in the Pending Projects is subject in each
instance to the following conditions precedent:

     (a) The Sellers'  representations  and warranties in this  Agreement  being
correct in all material respects as of each Closing Date;

     (b) The Sellers'  compliance with the provisions of Section 15 with respect
to such acquired property;

     (c)  There  shall not have  occurred  after the date  hereof  any  material
adverse physical change in the acquired property,  other than as contemplated by
the  parties  in  connection  with  the  completion  of the  property,  from its
condition as of the date hereof.

     (d) The Purchaser  shall not have elected to terminate  such  obligation in
conformity with the provisions of Section II or Section 12.

     The foregoing conditions shall be for the benefit of, and may be waived by,
the Purchaser.  Upon the  non-satisfaction  of any of the foregoing  conditions,
unless  waived by the  Purchaser,  the  Purchaser's  obligations  to acquire the
particular property shall terminate.

     6.  CONDITIONS  TO THE SELLERS'  PERFORMANCE.  The Sellers'  obligation  to
convey  each  building  included  in the  Pending  Projects  is  subject in each
instance to the following conditions precedent:

     (a) The Purchaser's  representations and warranties in this Agreement being
correct in all material respects as of each Closing Date; and

     (b) The  Purchaser's  performance of all of its obligations to acquire such
property under this Agreement.

     (c) The Purchaser  shall not have elected to terminate  such  obligation in
conformity with the provisions of Section II or Section 12.

     The  foregoing  conditions  shall be for the  benefit of, and may be waived
only by, the Participating Sellers with respect to each acquired property.  Upon
the non-satisfaction of any of the foregoing  conditions,  unless waived by such
Participating  Sellers, their obligation to convey the particular property shall
terminate.

     7. ACCESS.

     (a) Access to the Pending Projects prior to the Closing Date shall be given
to the  Purchaser  during normal  business  hours upon at least one (1) business
day's prior notice to the Seller.

     (b) The Purchaser and the Purchaser's  contractors  and  consultants  shall
have the right,  from the date  hereof  until the  Closing  Date for an acquired
property,  to enter  onto  such  property,  at its own cost  and  risk,  for any
purposes, including but not limited to, inspecting the property. The Purchaser's
contractors and consultants  shall be duly licensed and insured.  As a condition
of such entry, the Purchaser shall provide evidence  reasonably  satisfactory to
the Sellers of the existence of general  liability  insurance  prior to any such
entry, inspection, test or study. The Sellers agree to cooperate reasonably with
the  Purchaser  in the  inspection  of the  Pending  Projects  and agree to make
available to the Purchaser all information in the Sellers' possession or control
pertaining to the condition of the Pending Projects,  including  engineering and
environmental  reports,   studies,   tests,   monitoring  results,  and  related
documentation.

     (c) The Purchaser  shall  indemnify and defend the Sellers against and hold
the Sellers harmless from all losses, costs, damages, liabilities, and expenses,
arising out of any personal injury or physical damage to the Pending Projects in
connection with the Purchaser's inspection of or presence,  prior to the Closing
Date,  on the Pending  Projects.  Furthermore,  the Purchaser  shall  indemnify,
defend and hold the Sellers harmless from and against any mechanic's lien claims
that may arise in  connection  with the  Purchaser's  inspection of or presence,
prior to the Closing Date, on the Pending Projects.

     8. TITLE.  Title to the Pending  Projects shall be such as will be insured,
solely in the name of the applicable  Purchasors as good and marketable title by
a title insurance company  acceptable to the Purchaser at regular rates pursuant
to the  standard  stipulations  and  conditions  of the 1970 Form B ALTA Owner's
Title  Insurance  Policy as revised in 1984,  and as the same may be modified by
such  endorsements,  affirmative  coverage  and other  matters  which  have been
requested by the Purchaser prior to each of the Closing Dates, free and clear of
all liens and  encumbrances,  except  those  liens  and  encumbrances  which the
Purchaser agrees to accept and/or assume in writing as of each Closing Date.

     9. CLOSE OF THE PURCHASE AND SALE.

     (a) CONVEYANCE OF TITLE. At each close of escrow, good and marketable title
to the Pending Projects shall be conveyed by the Sellers to the Purchaser by the
Deed (as defined below) subject only to the following permitted liens:

          (i)  A  lien  for  real  property  taxes  and   assessments  not  then
     delinquent;

          (ii)  Matters of title  respecting  the Pending  Projects  approved or
     deemed approved by the Purchaser in accordance with this Agreement;

          (iii) Title and survey  matters  which would be  disclosed  by an ALTA
     survey and approved or deemed approved by the Purchaser;

          (iv) Matters  affecting the condition of title to the Pending Projects
     created by or with the written consent of the Purchaser; and

          (v) Indebtedness for borrowed funds incurred by the Sellers with their
     written agreement.

     As of each of the  Closing  Dates,  all of the  Sellers'  right,  title and
interest in and to the Personal Property shall be conveyed by the Sellers to the
Purchaser by the Warranty Bill of Sale in the form attached  hereto as EXHIBIT B
(the "Bill of Sale").

     (b) THE SELLERS'  DELIVERIES ON THE CLOSING DATE. The Sellers shall deliver
to the Purchaser on every Closing Date the following documents:

          (i) Statutory  grant deeds  executed and  acknowledged  by the Sellers
     (the "Deed");

          (ii) The Sellers'  affidavits of non-foreign status as contemplated by
     Section 1445 of the Internal Revenue Code of 1986, as amended, or a release
     from the Internal Revenue Service in form and content reasonably acceptable
     to the  Purchaser,  indicating  that  the  Purchaser  is  excused  from any
     withholding requirements under federal law ("FIRPTA Affidavit") executed by
     the Sellers, but undated;

          (iii)The  Sellers'  affidavits as contemplated by Revenue and Taxation
     Code Section 18662 or a release from the California  Franchise Tax Board in
     form and content  reasonably  acceptable to the Purchaser,  indicating that
     the Purchaser is excused from any withholding requirements under California
     law (the "Withholding Affidavit") executed by the Sellers, but undated;

          (iv) Bills of Sale duly executed by the Sellers, but undated; and

          (v) Such other  documents as the Purchaser may  reasonably  require in
     order to close the transactions in accordance with the terms hereof.

     (c) PURCHASER'S DELIVERIES ON THE CLOSING DATE. The Purchaser shall deliver
to the Sellers on every Closing Date the following:

          (i) The  consideration  in accordance  with Section 3(a) together with
     the Purchaser's share of closing costs; and

          (ii) Such other  documents  as the Sellers may  reasonably  require to
     close the transactions in accordance with the terms hereof.

     (d) CLOSING  COSTS.  The closing  costs shall be allocated  and prorated as
follows:

          (i) THE SELLERS SHALL PAY:

               (A) any costs of clearing title to the Pending Projects;

               (B) any document preparation fees for the Deed; and

               (C) all documentary  and/or real property transfer taxes due upon
          the transfer of the Pending Projects.

          (ii) THE PURCHASER SHALL PAY:

               (A) all  charges  in  connection  with  the  issuance  of a title
          policy; and

               (B) the recording  charges in connection with  recordation of the
          Deed.

     Any closing  costs not  addressed  herein shall be allocated in  accordance
with the custom and practice then prevailing in Santa Clara County.

               (iii) REAL ESTATE  TAXES,  BONDS AND  ASSESSMENTS.  Current  real
          property taxes, any current installment of any bond or assessment that
          constitutes a lien on the Pending Projects, rents and license fees, if
          any,  including any additional  property taxes or  installments of any
          bond or assessment  lien that may be assessed  after the Closing Date,
          but that relate to a period prior to the Closing  Date,  regardless of
          when notice of those taxes,  dues or  assessments  are received or who
          receives the notice shall be prorated as of the Closing Date.

     10.  POSSESSION.  Exclusive  possession  of the Pending  Projects  shall be
delivered to the Purchaser on each Closing Date.

     11. DAMAGE AND DESTRUCTION.

     (a) In the event of damage or  destruction  of a building  included  in the
Pending  Projects or any portion of the Pending Projects prior to a Closing Date
in an amount not exceeding Ten Thousand Dollars ($10,000), the Purchaser and the
Sellers shall consummate the transaction, provided that the Sellers shall assign
to the Purchaser such Sellers'  rights under any insurance  policy  covering the
damage or  destruction  and shall  indemnify the  Purchaser  with respect to any
costs  incurred by the Purchaser in repairing  and restoring the building  after
the  Closing  Date that are not paid by the  insurance  up to the  amount of Ten
Thousand Dollars ($10,000) or may, at the Sellers' election, grant the Purchaser
a credit in said amount against the Acquisition Value.

     (b) In the event of damage or  destruction  of a building  included  in the
Pending  Projects or any portion of the  Pending  Projects  prior to the Closing
Date in an amount in excess of Ten Thousand Dollars ($10,000), the Purchaser may
elect within ten (10) days following such event of damage or destruction, either
to terminate its  obligation  to acquire such  property  under the terms of this
Agreement upon written notice to the Sellers,  or to consummate the transaction,
in which event the Sellers  shall assign to the  Purchaser  the Sellers'  rights
under any insurance  policy covering the damage or destruction,  but without the
indemnity  provided  in  subsection  (a)  above.  The  Purchaser's   failure  to
affirmatively  elect whether to terminate or consummate the  transaction  within
said ten (10) day period shall be deemed the Purchaser's  election to consummate
the transaction.  If the Purchaser elects to terminate its obligation to acquire
such  property  under the terms of this  Agreement  pursuant to this  provision,
neither  party  shall have any  further  obligations  to acquire or convey  such
property under this Agreement.

     12. CONDEMNATION.

     (a) If any portion of a building  included in the Pending Projects is taken
by  condemnation  or eminent domain or is the subject of a threatened or pending
condemnation or eminent domain proceeding that has not been consummated prior to
the Closing Dates  resulting in a decrease in the value of the Pending  Projects
in an amount not exceeding Ten Thousand Dollars ($10,000), the Purchaser and the
Sellers shall consummate the transaction, provided that the Sellers shall assign
to the Purchaser  such  Sellers'  rights to all awards for the  condemnation  or
taking and shall  indemnify the Purchaser  with respect to any costs incurred by
the  Purchaser in repairing  and restoring the property that are not paid by the
condemnation  awards up to the amount of Ten Thousand Dollars  ($10,000) or may,
at the Sellers'  election,  grant the Purchaser a credit in such amount  against
the consideration payable for the acquired property.

     (b) If any portion of a building  included in the Pending Projects is taken
by  condemnation  or eminent domain or is the subject of a threatened or pending
condemnation or eminent domain proceeding that has not been consummated prior to
the Closing  Date  resulting  in a decrease in the value of such  property in an
amount in excess of Ten Thousand  Dollars  ($10,000),  the  Purchaser  may elect
within ten (10) days following such event,  either to terminate its  obligation,
to acquire the property under this Agreement upon written notice to the Sellers,
or to consummate the transaction, in which event the Sellers shall assign to the
Purchaser such Sellers' rights to all awards for the condemnation or taking, but
without the indemnity provided in subsection (a) above. The Purchaser's  failure
to affirmatively elect whether to terminate or consummate the transaction within
said ten (10) day period shall be deemed the Purchaser's  election to consummate
the transaction.  If the Purchaser elects to terminate its obligation to acquire
the property  under this  Agreement  pursuant to this  provision,  neither party
shall have any further obligations to acquire or convey such property under this
Agreement, except as otherwise provided in this Agreement.

     13.  SELLERS'  REPRESENTATIONS  AND  WARRANTIES.  The  Sellers  jointly and
severally  represent  and warrant to the  Purchaser  that as of the date of this
Agreement and as of each of the respective Closing Dates:

     (a) The Sellers  have full  right,  power and  authority  to enter into and
perform the Sellers'  obligations  under this  Agreement in accordance  with its
terms;

     (b) None of the Sellers is a "foreign person" within the meaning of Section
1445(f)(3) of the Internal Revenue Code of 1954, as amended, and is a "resident"
of the State of California within the meaning of Section 18662 of the California
Revenue and Taxation Code, as amended;

     (c) There is not pending, or to the Sellers' actual knowledge,  threatened,
any litigation  with respect to the Pending  Projects  (excluding any properties
conveyed to the Purchaser hereunder prior to the Closing Date); and

     (d)  Except  as  disclosed  to the  Purchaser  and to the  Sellers'  actual
knowledge,  no toxic or hazardous  chemicals,  waste,  or substances of any kind
have ever been  spilled,  disposed  of, or stored on,  under,  or at the Pending
Projects in violation of any applicable  law, rule or regulation  (excluding any
properties conveyed to the Purchaser hereunder prior to the Closing Date).

     The  continued   accuracy  in  all  respects  of  the  Sellers'   foregoing
representations  and warranties of the Sellers shall be a condition precedent to
the Purchaser's  obligation to close the acquisition of each property.  All such
representations  and  warranties  contained  in this  Agreement  shall be deemed
remade as of the Closing Dates for each acquired property.

     14. PURCHASER REPRESENTATIONS AND WARRANTIES.  The Purchaser represents and
warrants to the Sellers that as of the date of this  Agreement and as of each of
the respective  Closing Dates the Purchaser has full right,  power and authority
to buy the Pending  Projects  from the  Sellers  and to perform the  Purchaser's
obligations under this Agreement in accordance with its terms.

     15. SELLERS'  COVENANTS.  Commencing on the date hereof and continuing with
respect to each building included in the Pending Projects until the Closing Date
for the acquisition of such property:

     (a) The Sellers shall not create or consent to any liens, encumbrances,  or
easements on or affecting the Pending  Projects,  except for the permitted liens
described  in Section 9(a) as  contemplated  by the  submitted  plans and issued
permits for such Projects and for secured debt.

     (b) The  Sellers  shall  not  permit  any act of waste  or act  that  would
materially to diminish the value of the Pending Projects for any reason,  except
that caused by ordinary wear and tear.

     (c) The Sellers will promptly (after learning of same) notify the Purchaser
in writing of any adverse material changes  affecting the physical  condition of
the Pending Projects.

     (d) The  Sellers  shall  complete  and  maintain  the  Pending  Projects in
conformity with  applicable  building codes,  laws, and sound  construction  and
property management practices.

     (e) Unless the acquisition of an acquired  property is sooner terminated by
the Purchaser (when permitted under this Agreement),  the Sellers will not make,
accept,  negotiate or otherwise  pursue any offers for the disposition  (whether
directly, through a joint venture, ground lease, financing, or otherwise) of any
interest in the Pending Projects.

     16.  "AS-IS"  SALE.  Except as expressly  set forth  herein,  the Purchaser
acknowledges  that it is  buying  the  Pending  Projects  in  "As-Is,  Where-Is"
condition, in reliance on its own investigations.

     17.  BROKERS AND FINDERS.  The Purchaser and the Sellers each represent and
warrant to the other  party that no broker or finder  has been  utilized  in the
purchase and sale  contemplated by this  Agreement.  In the event of a claim for
broker's fees,  finder's  fees,  commissions  or other similar  compensation  in
connection  herewith:  (i) the  Purchaser,  if such  claim  is  based  upon  any
agreement alleged to have been made by the Purchaser,  shall indemnify,  defend,
and hold the Sellers  harmless  (using counsel  reasonably  satisfactory  to the
Sellers) from and against any and all damages, liabilities,  costs, expenses and
losses  (including,  but not  limited  to,  attorneys'  fees and costs) that the
Sellers sustain or incur by reason of such claim; and (ii) the Sellers,  if such
claim is based  upon any  agreement  alleged  to have been made by the  Sellers,
shall  indemnify,   defend  and  hold  the  Purchaser  harmless  (using  counsel
reasonably  satisfactory to the Purchaser) from and against any and all damages,
liabilities,  costs,  expenses  and  losses  (including,  but  not  limited  to,
attorneys'  fees and costs) that the  Purchaser  sustains or incurs by reason of
such claim.

     18. SURVIVAL.  Except to the extent  specifically  provided to the contrary
hereunder,  each and every covenant,  agreement,  representation and warranty of
each of the parties  hereto  shall  survive the Closing Date and shall not merge
with the Sellers' deliveries of the Deeds or other documents to the Purchaser.

     19. ASSIGNMENT;  SUCCESSORS AND ASSIGNS. The Purchaser shall have the right
to  assign  this  Agreement  with the  prior  written  consent  of the  Sellers'
Representative or all Sellers, which consent shall not be unreasonably withheld.
This Agreement, and the terms, covenants and conditions herein contained,  shall
be  binding  upon and  inure to the  benefit  of the  parties  hereto  and their
respective successors, heirs and assigns.

     20.  NOTICES.  All  notices to be given  under this  Agreement  shall be in
writing and sent by:

     (a) certified mail, return receipt requested, in which case notice shall be
deemed  delivered three (3) business days after deposit,  postage prepaid in the
United States Mail,

     (b) a nationally  recognized  overnight courier, in which case notice shall
be deemed delivered one (1) business day after deposit with that courier, or

     (c)  facsimile  or  similar  means if a copy of the  notice is also sent by
United States  Certified Mail, in which case notice shall be deemed delivered on
transmittal  by facsimile or other similar  means,  provided that a transmission
report is generated by reflecting the accurate  transmission of the notices,  as
follows:

                If to the Purchaser:

                Mission West Properties
                10050 Bandley Drive
                Cupertino, CA 95014
                Attention: Independent Directors Committee
                Fax No. (408) 725-1626

                If to the Sellers:

                c/o Berg & Berg Enterprises, Inc.
                10050 Bandley Drive
                Cupertino, CA  95014
                Attention: Carl E. Berg
                Fax No. (408) 725-1626

     21.  ARBITRATION OF DISPUTES.  Any dispute or claim in law or equity solely
between the Purchaser and Sellers arising out of this Agreement shall be decided
by  neutral,  binding  arbitration.   The  arbitration  shall  be  conducted  in
accordance with the rules of the American  Arbitration  Association ("AAA") then
obtaining  using a single  arbitrator.  The decision of the arbitrator  shall be
final and binding. In all other respects,  the arbitration shall be conducted in
accordance  with Part III,  Title 9 of the California  Code of Civil  Procedure.
Judgment  upon the award  rendered  by the  arbitrator(s)  may be entered in any
court having jurisdiction thereof. The parties shall have the right to discovery
in accordance  with code of Civil  Procedure  Section  1283.05.  The arbitration
shall take place in the County of Santa Clara.  The filing of a judicial  action
to enable the recording of a notice of pending action,  for order of attachment,
receivership,  injunction, or other provisional remedies, shall not constitute a
waiver of the right to arbitrate under this provision.

     22.  ATTORNEYS'  FEES.  If any  arbitration  or court  action is  commenced
between the parties,  the prevailing  party in that  arbitration or court action
shall be  entitled  to  recover  from the  non-prevailing  party all  reasonable
attorneys' fees and costs.

     23. ENTIRE AGREEMENT.  This Agreement contains the entire agreement between
the parties to this  Agreement and shall not be modified in any manner except by
an instrument in writing executed by the parties or their respective  successors
in interest.

     24. SEPARATE CONTENTS.  The acquisition and conveyance of the real property
and  improvements  constituting  each of the  buildings  included in the Pending
Projects or identified on Appendix I is a separate transaction, and the parties'
obligations with respect to each such property  constitutes a separate  contract
under this Agreement.

     25. SEVERABILITY.  If any term or provision of this Agreement shall, to any
extent, be held invalid or unenforceable,  the remainder of this Agreement shall
not be affected.

     26. WAIVERS.  A waiver or breach of covenant or provision in this Agreement
shall  not be  deemed  a waiver  of any  other  covenant  or  provision  in this
Agreement,  and no waiver  shall be valid  unless in writing and executed by the
waiving  party.  An extension of time for  performance  of any obligation or act
shall  not be  deemed  an  extension  of the time for  performance  of any other
obligation or act.

     27. CONSTRUCTION.  The section headings and captions of this Agreement are,
and the  arrangement  of this  instrument  is, for the sole  convenience  of the
parties to this Agreement.  The section headings,  captions,  and arrangement of
this instrument do not in any way affect,  limit,  amplify,  or modify the terms
and provisions of this Agreement.  The singular form shall include  plural,  and
vice versa.  This Agreement shall not be construed as if it had been prepared by
one of the  parties,  but rather as if both parties  have  prepared  it.  Unless
otherwise  indicated,  all  references  to sections are to this  Agreement.  All
exhibits referred to in this Agreement are attached to it and incorporated in it
by this  reference.  Capitalized  terms used in this  Agreement have the meaning
ascribed to them in the Acquisition Agreement under indicated otherwise.

     28. MERGER. All of the terms, provisions,  representations and covenants of
the parties under this  Agreement  shall survive the Closing Dates and shall not
be merged in the Deeds.

     29.   COUNTERPARTS.   This  Agreement  may  be  executed  in  one  or  more
counterparts.

     30. TIME OF THE ESSENCE. Time is of the essence in this Agreement.

     31.  GOVERNING  LAW.  This  Agreement  shall be governed  and  construed in
accordance with the laws of the State of California.

     32. EXHIBITS.  Each exhibit to which reference is made in this Agreement is
deemed  incorporated into this Agreement in its entirety by such reference.  The
exhibits to this Agreement are the following:

           Exhibit A Legal Description of Pending Projects
           Exhibit B Warranty Bill of Sale

     IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement as of
the date first set forth above.


PURCHASER:                             SELLERS:

MISSION WEST PROPERTIES, a             By: /s/Carl E. Berg
California Corporation                    ______________________________  
                                          Carl E. Berg
By:   /s/ Michael J. Anderson                                 
   ______________________________      By: /s/Clyde J. Berg      
                                          ______________________________
Its:    Vice President                    Clyde J. Berg
    _____________________________         
                                          


MISSION WEST PROPERTIES, L.P., a       BERG & BERG ENTERPRISES, INC., a
Delaware Limited Partnership           California Corporation

By: Mission West Properties, a         By:   /s/ Carl E. Berg
    California Corporation, as            ______________________________
    General Partner
                                       Its:   President
By:   /s/ Michael J. Anderson             _____________________________
   ______________________________         

Its:    Vice President                                  
    _____________________________          


MISSION WEST PROPERTIES, L.P. I, a     BACCARAT FREMONT, LLC, a California
Delaware Limited Partnership           Limited Liability Company

By: Mission West Properties, a         By:    /s/ Michael Knapp
    California Corporation, as            ______________________________
    General Partner
                                       Its:     Manager
By:  /s/ Michael J. Anderson              _____________________________  
   ______________________________         

Its:   Vice President                                  
    _____________________________          


MISSION WEST PROPERTIES, L.P. II, a    
Delaware Limited Partnership           

By: Mission West Properties, a         By: /s/ Thelmer Aalgaard
    California Corporation, as            ______________________________
    General Partner                       Thelmer Aalgaard

By:    /s/ Michael J. Anderson         By: /s Patricia Aalgaard
   ______________________________         ______________________________
                                          Patricia Aalgaard
Its:      Vice President                                 
    _____________________________      By: /s/ Clyde J. Berg
                                          ______________________________
                                          Clyde J. Berg, Trustee of the 1981 
                                          Kara Ann Berg Trust 
                                        
                                     
MISSION WEST PROPERTIES, L.P. III, a   
Delaware Limited Partnership           

By: Mission West Properties, a      
    California Corporation, as          
    General Partner
                                      
By:  /s/ Michael J. Anderson                                       
   ______________________________        

Its:    Vice President                                  
    _____________________________        
                                          



<PAGE>
<TABLE>
<CAPTION>

                                        APPENDIX I

                             LIST OF PENDING PROJECTS, OWNERS
                                            AND
                                 INITIAL ACQUISITION VALUE


                                                                  Projected
                                                   Projected       Average
                                                    Triple         Monthly
                                   Approximate        Net        Rental Rate    
                                    Building        Annual        Per Square    Acquisition 
PENDING PROJECT AND OWNERS            Size         Base Rent        Foot           Value
=============================================================================================

<S>                                  <C>         <C>                <C>         <C>                                               
GREAT OAKS                            54,240       $715,968         $1.10        $5,226,043                                        
Carl Berg and Clyde Berg

MEMOREX DRIVE                         52,800      $ 535,560         $0.85        $3,347,250                                    
Carl Berg and Clyde Berg

RICHARD AVE.                          58,740       $599,148         $0.85        $3,744,675                                      
Carl Berg and Clyde Berg

AUTOMATION PARKWAY
Berg & Berg Enterprises,   
Inc.                     Bldg.  1    114,028     $1,778,036         $1.30       $12,705,971
                              
                                2     80,640     $1,257,984         $1.30        $8,985,600
                               
                                3     80,640     $1,257,984         $1.30        $8,985,600
                              
                                4     61,056       $952,474         $1.30        $6,803,386
                                   

L'AVENIDA
Baccarat Fremont, LLC,   Bldg.  1     94,134     $3,219,382         $2.85       $18,937,541      
a California limited 
liability company, Thelmer      2    101,622     $3,475,724         $2.85       $20,445,435         
Aalgaard and Patricia   
Aalgaard, husband and wife,     3     93,314     $3,191,339         $2.85       $18,772,582       
and Clyde Berg, Trustee of 
the 1981 Kara Ann Berg Trust    4    126,236     $4,317,271         $2.85       $25,395,717
                              
                                5     98,166     $3,357,277         $2.85       $19,748,688
                               

</TABLE>
<PAGE>


                                    EXHIBIT A

                   LEGAL DESCRIPTION OF THE PENDING PROJECTS

THE LAND REFERRED TO IN THIS REPORT IS SITUATED IN THE STATE OF CALIFORNIA,  AND
IS DESCRIBED AS FOLLOWS:

GREAT OAKS:

This land is located in south San Jose, California and consists of approximately
3 gross  acres of  unimproved  land.  The  land is  described  by the  following
Assessor's Parcel Number:

706-02-025

MEMOREX DRIVE AND RICHARD AVE.:

This  land  is  located  in  north  Santa  Clara,  California  and  consists  of
approximately a 6 acre portion of land. This portion of land is described by the
following Assessor's Parcel Number:

224-65-006

AUTOMATION PARKWAY:

This land is located in north San Jose, California and consists of approximately
21 gross  acres of  unimproved  land.  The land is  described  by the  following
Assessor's Parcel Numbers:

Portions of 244-13-10, and 244-15-18.

L' AVENIDA:

This land is located in Mountain View,  California and consists of approximately
32 gross  acres of  unimproved  land.  The land is  described  by the  following
Assessor's Parcel Numbers:

116-16-63, 116-16-60, 116-16-65, 116-16-59, 116-16-75, 116-16-70, 116-16-69,
116-16-74




<PAGE>


                                    EXHIBIT B

                              WARRANTY BILL OF SALE

     This  Warranty  Bill of Sale  ("Bill of Sale") is executed as of March ___,
1998 by the  individuals  and entities listed on Appendix I ("Sellers") in favor
of Mission West Properties,  a California  corporation (the "Company"),  Mission
West  Properties,  L.P.  ("MWP"),  Mission  West  Properties,  L.P. I ("MWP I"),
Mission West Properties,  L.P. II ("MWP II"), Mission West Properties,  L.P. III
("MWP  III,  and  collectively  with the  Company,  MWP,  MWP I and MWP II,  the
"Purchaser")

                                    RECITALS

      A. The Sellers and the  Purchaser  have entered into that certain  Pending
Projects  Acquistion  Agreement  dated  of even  date  herewith  (the  "Purchase
Agreement"),  in which the  Purchaser  has agreed to purchase  real  property in
Santa Clara County, State of California, more particularly described in attached
Schedule 1, (the "Pending Projects") incorporated in this Bill of Sale.

      B. Pursuant to the Purchase Agreement, the Sellers have agreed to transfer
to the  Purchaser  all the Sellers'  right,  title and interest in all licenses,
permits, development rights, air rights, authorizations,  certificates, surveys,
plans,  specifications,   reports,  studies,  test  results  and  all  unexpired
warranties  and  guaranties  given by  unaffiliated  third  parties owned by the
Sellers and  pertaining to or used  exclusively  in connection  with the Pending
Projects  (collectively,  "Personal Property") concurrent with the Closing Dates
(as defined in the Purchase Agreement).

      For good and valuable consideration, the receipt and adequacy of which are
hereby acknowledged, the Sellers agree as follows:

                                    AGREEMENT

      1.  TRANSFER.  Effective  as of the  Closing  Dates,  the  Sellers  hereby
transfer,  sell,  assign,  grant and convey to the Purchaser all of the Sellers'
right, title, and interest in the Personal Property.

      2.  SELLERS'S  COVENANTS.  The Sellers  covenant to the Purchaser that the
Sellers have good and  marketable  title to the Personal  Property,  free of all
liens, and has the right to transfer the Personal Property.  The Sellers further
agree  that the  Sellers  will  defend  the  Purchaser's  title to the  Personal
Property against the demands of anyone claiming through the Sellers.

      3. ATTORNEYS' FEES. If any suit,  action or other proceeding is instituted
to enforce the rights of either  party under this Bill of Sale,  the  successful
party, as adjudicated by a court, shall be entitled to reasonable  attorney fees
and court costs.

      4.  GOVERNING  LAW.  This Bill of Sale shall be governed and  construed in
accordance with California law.

      The  Sellers  have  executed  this Bill of Sale as of the date first above
written.

SELLERS:

_______________________________________

By:                                 
   ____________________________________

Its:                                
    ___________________________________


By:                                 
   ____________________________________

Its:                                
    ___________________________________



                       BERG LAND HOLDINGS OPTION AGREEMENT

OPTIONEE:   Mission West Properties, a California corporation, Mission West
            Properties, L.P., a Delaware limited partnership, Mission West
            Properties, L.P.I, a Delaware limited partnership, Mission West
            Properties, L.P.II, a Delaware limited partnership, Mission West
            Properties, L.P.III, a Delaware limited partnership

OPTIONOR:   BB&K, a California general partnership, Baccarat Fremont
            Developers, LLC, a California limited liability company

PROPERTY:   King Ranch Business Park, San Jose, CA
            Hellyer and Piercy, San Jose, CA
            Fremont and Cushing, Fremont, CA

Dated:      December 29, 1998




<PAGE>




                               BERG LAND HOLDINGS
                                OPTION AGREEMENT

      This Berg Land Holdings Option Agreement  ("Agreement") is entered into as
of December  29, 1998 by and  between  Mission  West  Properties,  a  California
corporation (the "Company"),  Mission West Properties,  L.P., a Delaware limited
partnership  ("MWP"),  Mission  West  Properties,  L.P.  I, a  Delaware  limited
partnership  ("MWP I"),  Mission West  Properties,  L.P. II, a Delaware  limited
partnership ("MWP II") and Mission West Properties, L.P. III, a Delaware limited
partnership  ("MWP III";  MWP,  MWP I, MWP II and MWP III are referred to as the
"Operating Partnership";  the Company and the Operating Partnership are referred
to  collectively  as the  "Optionee"),  on the one hand, and the individuals and
entities  listed  on  Appendix  I who own or  have  the  right  to  acquire  the
properties set forth opposite such individuals' and entities' names thereon (the
"Optionors") on the other hand.

                                    RECITALS

      A. The  Optionors  are the owners of, or have the right to acquire,  three
(3) tracts of real  property  located in Santa Clara County and Alameda  County,
California,  commonly known as King Ranch Business Park, Hellyer and Piercy, and
Fremont and Cushing,  and  described in attached  Exhibit A,  together  with all
rights, privileges,  easements, and appurtenances (collectively,  the "Berg Land
Holdings");  and  all  personal  property,   entitlements,   licenses,  permits,
development rights, air rights,  authorizations,  certificates,  surveys, plans,
specifications,  reports, studies, test results and all unexpired warranties and
guaranties  given by  unaffiliated  third  parties  owned by the  Optionors  and
pertaining to or used exclusively in connection with the Berg Land Holdings (the
"Personal  Property");  (the Berg Land Holdings and Personal  Property  shall be
collectively referred to herein as the "Berg Land Holdings").

      B. In connection with the  Acquisition  Agreement dated as of May 14, 1998
(the "Acquisition  Agreement"),  to which the Optionee and the Optionors all are
parties, the Operating  Partnership has agreed to issue L.P. Units to all of the
limited partners  therein,  the Company has agreed to become the general partner
of the Operating  Partnership,  and the Company has agreed to permit  holders of
L.P.  Units to exchange them for shares of the Company's  common stock  ("Common
Stock") under certain circumstances.

      C. The  Operating  Partnership  is governed by the  Operating  Partnership
Agreement and the Acquisition Agreement.

      D. The  Optionee  desires  to have an  option  to  acquire  the Berg  Land
Holdings  and the  Optionors  desire to grant such an option to  Optionee on the
terms  and  conditions  of  this  Agreement,  and  pursuant  to the  Acquisition
Agreement have agreed that the Company or the Operating  Partnership  shall have
the option to acquire each of the buildings comprising the Berg Land Holdings as
soon as such building  (each an "acquired  property"  herein) has been completed
and fully leased by issuing either  additional L.P. Units to the Optionors based
upon the Acquisition Value (as defined below), or at the Optionors' option, they
may receive cash or a combination of cash and L.P.
Units equal to the Acquisition Value.

      E. This Agreement  shall become  effective  December 29, 1998 (the "Option
Effective Date").

                                    AGREEMENT

      NOW THEREFORE,  in  consideration  of the mutual covenants and promises of
the parties, the parties hereto agree as follows:

     1. Option.  Optionor  grants  Optionee an exclusive  option  ("Option")  to
purchase each of the acquired properties comprising the Berg Land Holdings.  The
Option shall be "rolling"  and shall apply to each acquired  property.  The fact
that  Optionee  does not exercise  the Option with  respect to a given  acquired
property shall not impact  Optionee's  right to exercise the Option with respect
to  a  subsequent   acquired   property.   The  Optionors'   shall  appoint  one
representative  to act as their agent in  connection  with the  acquisition  and
conveyance of each  acquired  property (the  "Optionors'  Representative").  The
Optionors'  Representative  is  authorized to receive  written  notices from the
Optionee on behalf of all of the  Optionors of such  property.  This Option does
not create any right to acquire any portion of the Berg Land  Holdings  prior to
the development of a completed building thereon, fully leased.

     2. Term of Option.  The term of the Option  ("Term")  shall commence on the
Option  Effective Date and, unless  Optionee has timely  exercised the Option in
accordance with the provisions hereof,  shall terminate on the sooner of (i) the
"Percentage  Interest Date" (as defined  below),  or (ii) 11:59 p.m. on December
31,  2010.  The  Percentage  Interest  Date shall be the date on which the "Berg
Group" as defined in the  Acquisition  Agreement no longer owns or has the right
to acquire 65% of the  Company's  Common  Stock,  determined  as though all L.P.
Units  owned in the  aggregate  by the Berg Group were  exchanged  for shares of
Common Stock at the Exchange Factor.

     3.  Consideration.  As consideration  for the Option,  Optionee has paid to
Optionor the sum of Ten and No/100 Dollars ($10.  00) ("Option  Consideration"),
the receipt and sufficiency of which are hereby acknowledged.

     4. Development of Berg Land Holdings.  Optionor intends to develop the Berg
Land Holdings and construct  thereon various  industrial  buildings,  subject to
obtaining the necessary  governmental  permits and approvals.  This  development
will  occur  over  several  years and  shall be  accomplished  in a manner  that
Optionor  determines,  in its sole  discretion,  is prudent  based  upon  market
conditions.  The properties commonly known as Hellyer and Piercy and Fremont and
Cushing  are  not  yet  owned  by  Optionors,  but are  subject  to  acquisition
agreements  wherein the Optionors have the right to acquire such properties.  If
the Optionors  decide not to exercise  their rights to acquire such  properties,
then  such  properties  shall no  longer  be  deemed to be part of the Berg Land
Holdings and shall no longer be subject to the terms of this Option.

     5.  Exercise.  The exercise of the Option with respect to a given  acquired
property  must occur  within  thirty  (30) days of  receipt  of the  "Completion
Notice" from Optionor's  Representative to Optionee. The Completion Notice shall
be  delivered  by  Optionor's  Representative  to Optionee  with respect to each
acquired  property in the Berg Land Holdings once the following has occurred (i)
the completion of the building and receipt of required occupancy  permits;  (ii)
the execution of written  leases with respect to one hundred  percent  (100%) of
the rentable square footage in such building,  and (iii) the Optionors' election
as to the  form of  consideration  they  intend  to  receive  for  the  acquired
property.  Optionee  may  exercise  the Option at any time  during  such  thirty
(30)-day period by written notice ("Notice") to Optionor,  stating the date upon
which  Optionee  desires to close escrow  (provided  that escrow shall not close
later than the sixtieth (60th) day following receipt of the Completion Notice).

     6. Acquisition  Value. In the event that Optionee exercises the Option, the
Acquisition  Value for the subject  acquired  property shall be equal to (i) the
full  construction  cost  of  all  improvements  on or  servicing  the  acquired
property,  plus (ii) 10% of the amount set forth in  subsection  (i), plus (iii)
interest at LIBOR plus 1.65% per annum on the  amounts  set forth in  subsection
(i) from the date paid by Optionor and ending at the close of escrow,  plus (iv)
the acquisition  value of the parcel on which the improvements  were constructed
as set forth in the schedule  below and carrying  costs of 10% per annum thereon
from  January  1,  1998  until  the  close of  escrow,  minus (v) the sum of the
principal  amount of all debt  (other than  assessment  liens)  encumbering  the
subject  acquired  property  as  of  the  closing.  Optionee  shall  assume  all
assessments  that  are  a  lien  against  the  subject  acquired  property.  The
acquisition value of each parcel of the Berg Land Holdings shall be as follows:

<TABLE>
<CAPTION>

Location:                     Acquisition Value per     Acquisition Value per
                                 square foot of           acre of Acquired
                               Acquired Property:           Property:
                              ---------------------     ---------------------
<S>                          <C>                             <C>

King Ranch Business Park      $10.00 per square foot          $435,600

Hellyer and Piercy            $8.50 per square foot           $370,260

Fremont and Cushing           $20.00 per square foot          $871,200

</TABLE>

     7. Payment of Acquisition  Value.  The  Acquisition  Value shall be paid in
cash or L.P.  Units,  at the election of the Optionor's  Representative.  To the
extent the Optionor's Representative elects to receive L.P. Units, the number of
L.P. Units (N) paid to Optionor shall be determined as follows:

      (A-B)/C=N; where:

      A = Acquisition Value
      B = Any cash  portion  of the  Acquisition  Value  paid to  Optionor 
      C = The average market value of the Common  Stock over  the 30 trading-day
          period preceding the exercise of the Option.

     8. Agreement of Purchase and Sale.  Within seven (7) days after exercise of
the Option by Optionee,  Optionee and Optionors  each shall execute an agreement
of  purchase  and sale for the  purchase  of the  subject  acquired  property by
Optionee from  Optionors.  This purchase and sale agreement  shall be consistent
with this  Agreement  and shall also  reflect (a) the date of  execution  of the
purchase  and sale  agreement,  (b) the method of payment  and the amount of the
Acquisition  Value,  (c) the  outside  date of the close of escrow,  and (d) the
legal description of the acquired property to be transferred.

     9. Representations and Warranties. Optionors warrant that Optionors are the
owners  of, or have a valid and  binding  agreement  to  acquire,  the Berg Land
Holdings, and have (or will have prior to the close of escrow under the purchase
and sale agreement) insurable fee simple title to the acquired property clear of
restrictions,  leases, liens, and other encumbrances, except as permitted in the
purchase and sale agreement. If this option is exercised by Optionee,  Optionors
will  convey (or cause the  underlying  owner to convey)  title to the  acquired
property by California statutory grant deed.

     10. Assignment. Optionee shall have the right to assign the Option with the
prior  consent of Optionors  (whose  consent  shall be subject to their sole and
absolute discretion).

     11. No Transfer of Parcel. From and after the Option Effective Date, unless
and until this  Agreement is terminated,  Optionors  shall not sell or convey or
grant an option to sell or convey all or any  portion of the Berg Land  Holdings
if such sale,  conveyance or grant might in any way impair Optionors' ability to
transfer the Berg Land Holdings to Optionee.

     12. Miscellaneous.

          (a) Successors and Assigns. The terms, covenants and conditions herein
     contained  shall be binding upon and inure to the benefit of the successors
     and assigns of the parties hereto.

          (b) Entire  Agreement.  This Agreement  contains all of the covenants,
     conditions and agreements between the parties and shall supersede all prior
     correspondence, agreements and understandings, both oral and written.

          (c) Governing Law. This Agreement  shall be governed by, and construed
     in accordance with, the laws of the State of California.

          (d) Notices.  All notices  required or permitted to be given hereunder
     shall be in writing and mailed  postage  prepaid by certified or registered
     mail, return receipt requested, or by personal delivery, to the appropriate
     address  indicated in this  paragraph,  or at such other place or places as
     either  Optionee or Optionors'  Representative  respectively  may designate
     from time to time in a written notice given to the other.  Notices shall be
     deemed  sufficiently given upon receipt if by personal delivery,  overnight
     carrier or facsimile or three (3) days after the date of mailing thereof.

               (i) Optionee's Address for Notice:

                     Mission West Properties
                     10050 Bandley Drive
                     Cupertino, CA 95014
                     Attention:  Independent Directors Committee
                     Facsimile No.:  (408) 725-0700

               (ii) Optionors' Address for Notice:

                     Berg & Berg Enterprises, Inc.
                     10050 Bandley Drive
                     Cupertino, CA 95014
                     Attention:  Carl E. Berg
                     Facsimile No.:  (408) 725-0700

          (e)  Headings.  The title and  headings of the  paragraphs  hereof are
     intended  solely for means of  reference  and are not  intended  to modify,
     explain  or  place  any  construction  on  any of the  provisions  of  this
     Agreement.

          (f) Third-Party Rights. Nothing in this Agreement, express or implied,
     is  intended  to confer  on any  person,  other  than the  parties  to this
     Agreement  and their  respective  successors  and  assigns,  any  rights or
     remedies under or by reason of this Agreement.

          (g)  Authority of Parties.  All persons  executing  this  Agreement on
     behalf of any party to this Agreement  warrant that they have the authority
     to execute this Agreement on behalf of that party.

          (h) Partial  Invalidity.  Any  provisions  of this  Agreement  that is
     unenforceable  or invalid or the inclusion of which would adversely  affect
     the validity,  or  enforceability  of this Agreement shall be of no effect,
     but all the  remaining  provisions of this  Agreement  shall remain in full
     force.

          (i)  Counterparts.  This  Agreement  may be  executed  in one or  more
     counterparts.

          (j)  Amendment.  This  Agreement  may  not  be  modified,  amended  or
     otherwise  changed  in any  manner  except  by a writing  executed  by both
     Optionee and Optionor.

          (k) Time. Time is of the essence of every provision herein contained.

          (l) Exhibits.  The following exhibits are attached to, and made a part
     of, this Agreement:

          (m) Construction.  The section headings and captions of this Agreement
     are, and the arrangement of this instrument is, for the sole convenience of
     the  parties  to  this  Agreement.  The  section  headings,  captions,  and
     arrangement of this instrument do not in any way affect, limit, amplify, or
     modify the terms and provisions of this Agreement.  The singular form shall
     include plural, and vice versa. This Agreement shall not be construed as if
     it had been  prepared by one of the parties,  but rather as if both parties
     have prepared it. Unless  otherwise  indicated,  all references to sections
     are to this  Agreement.  All  exhibits  referred to in this  Agreement  are
     attached to it and incorporated in it by this reference. As used herein all
     capitalized  terms  shall  have  the  meanings  ascribed  to  them  in  the
     Acquisition Agreement, unless otherwise expressed.

           Exhibit A - Description of the Berg Land Holdings




<PAGE>


      IN WITNESS WHEREOF, the parties hereto have executed this Agreement in one
or more  counterparts,  on the date(s) set forth below,  effective as of the day
and year first above written.

                "Optionor"

                BB&K, a California general partnership

                By:  /s/ Carl E. Berg
                   __________________________________
                        
                Its:  General Partnership                     
                    _________________________________

                BACCARAT FREMONT DEVELOPERS, LLC, a California Limited
                Liability Company

                By:   /s/ Michael Knapp
                   __________________________________
                           
                Its:  Magager                        
                    _________________________________

                "Optionee"

                MISSION WEST PROPERTIES, a California Corporation

                By:  /s/ Michael J. Anderson
                   __________________________________
                            
                Its:  Vice President
                    _________________________________                          

                MISSION WEST PROPERTIES, L.P., a Delaware limited partnership

                By:  Mission West Properties, a California Corporation,
                     as General Partner

                By:   /s/ Michael J. Anderson      
                   _____________________________
                    
                Its: Vice President
                    ____________________________   

                MISSION WEST PROPERTIES, L.P.I, a Delaware Limited Partnership

                By:  Mission West Properties, a California Corporation,
                     as General Partner

                By:   /s/ Michael J. Anderson
                   _____________________________
                            
                Its:  Vice President
                    ____________________________               

                MISSION WEST PROPERTIES, L.P.II, a Delaware Limited Partnership

                By:  Mission West Properties, a California Corporation,
                     as General Partner

                By:   /s/ Michael J. Anderson
                   _____________________________
                          
                Its: Vice President
                    ____________________________        

                MISSION WEST PROPERTIES, L.P.III, a Delaware Limited Partnership

                By:  Mission West Properties, a California corporation,
                     as General Partner

                By:  /s/ Michael J. Anderson
                   _____________________________
                             
                Its:  Vice President
                    ____________________________                         


<PAGE>


<TABLE>
<CAPTION>


                                   APPENDIX I


                       OPTIONORS OF THE BERG LAND HOLDINGS

OPTIONOR                                      PROPERTY
- --------                                      --------
<S>                                           <C>    
BB&K, a California General                    King Ranch Business Park, San
   Partnership                                Jose, CA
                                 
Baccarat Fremont Developers, LLC,             Hellyer and Piercy, San Jose, CA
   a California Limited Liability
   Company

Baccarat Fremont Developers, LLC,             Fremont and Cushing, Fremont, CA
   a California Limited Liability
   Company

</TABLE>


<PAGE>


                                    EXHIBIT A

                  Legal Description of the Berg Land Holdings

THE LAND REFERRED TO IN THIS REPORT IS SITUATED IN THE STATE OF CALIFORNIA,  AND
IS DESCRIBED AS FOLLOWS:

King Ranch Business Park:

This land is located in south San Jose, California and consists of approximately
123 gross acres of  unimproved  land.  The land is  described  by the  following
Assessor's Parcel Numbers:

678-14-033,   678-14-052,   678-14-058,   678-14-060,   678-14-62,   678-14-066,
678-14-74,   678-14-079,   678-14-081,   678-16-005,   portion  of   678-16-006,
678-16-007, 678-16-008, and 678-16-011

Hellyer and Piercy:

This land is located in south San Jose, California and consists of approximately
7 gross  acres of  unimproved  land.  The  land is  described  by the  following
Assessor's Parcel Number:

678-08-003

Fremont and Cushing:

This land is located in Fremont,  California  and consists of  approximately  32
gross  acres  of  unimproved  land.  The  land  is  described  by the  following
Assessor's Parcel Numbers:

519-0850-014-57, and 519-0850-014-54



                                                                          
                          Mission West Properties, Inc.
                          Registration Rights Agreement









To:   Each purchaser of shares of
      Mission West Properties common
      stock in May 1998 private
      placement transactions


      You have agreed to acquire the number of shares of common stock of Mission
West Properties, a California corporation, identified below under the terms of a
Stock  Purchase  Agreement  dated as of May __,  1998 (the  "Agreement").  These
shares  are  "restricted  securities"  as defined  in Rule  144(a)(3)  under the
Securities  Act of 1933,  as amended  (the  "Securities  Act").  As described in
Section 4.8 of the  Agreement,  these  shares are  subject to a minimum  holding
period of one year from the date of  purchase  and you must  comply  with  other
resale  restrictions  contained  in Rule 144 before  they can be resold  without
registration  under the Securities  Act. One such  restriction is a limit on the
number of shares that you can sell during any three-month period which generally
is equal to the greater of 1% of the total number of outstanding  shares and the
average weekly reported  trading volume during the four calendar weeks preceding
the date on which you file a notice of the proposed  sale on SEC Form 144,  (the
"Volume  Limitation").  These restrictions will no longer apply when you are not
an affiliate of Mission  West  Properties  and have held the shares for at least
two years.

      Following  approval of the  shareholders  of Mission West  Properties at a
Special  Meeting to be held on December 28, 1998 and the closing of the purchase
of  your  Mission  West   Properties   shares,   Mission  West  Properties  will
reincorporate  in the  State  of  Maryland  by  merging  into its  wholly  owned
subsidiary Mission West Properties,  Inc. (the "Company").  In the merger,  each
share of Mission West  Properties  common stock that you have  purchased will be
exchanged for one share of common stock, $.001 par value, of the Company.

      The Company has registered  with the  Securities  and Exchange  Commission
("SEC") certain securities of the Company to be exchanged in the reincorporation
pursuant to a Registration Statement on Form S-4 (the "Registration Statement").
In addition,  the Company has registered the resale of the shares of the Company
(the  "Shares") that you will acquire in exchange for the shares of Mission West
Properties common stock that you have purchased under the Agreement.

     The  Company  intends to maintain  the  effectiveness  of the  Registration
Statement for the resale of your shares until  December 31, 1999;  provided that
events may arise which result in the  Company's  determination  that it would be
detrimental  to the  Company  or its  stockholders  for  you and  other  selling
stockholders to continue offering or selling their Shares under the Registration
Statement.  In that event, the Company, in its sole discretion,  will direct you
by written  notice ("Stop  Trading  Notice") to refrain from offering or selling
your  Shares  during a period,  which  shall not  exceed 30 days (the  "Blackout
Period"),  designated  by the Company.  In addition,  the Company may direct its
transfer  agent to refuse to  transfer  any of your  Shares  subject to the Stop
Trading  Notice.  Any Stop  Trading  Notice will take  effect,  and the Blackout
Period will  commence,  at 9:00 a.m.  Eastern  Time on the second  business  day
following  the date of that  Notice  and will  continue  for the  number of days
stated in the Notice.  By signing where  indicated  below and returning a signed
copy of this agreement to the Company you will have agreed not to offer and sell
any of your Shares pursuant to the  Registration  Statement  during any Blackout
Period.

      The Company  intends to issue a Stop Trading Notice at such times, if any,
when the Company has decided  not to  disclose  material  nonpublic  information
which it has no duty to disclose to the public. The Company does not expect this
to be a frequent occurrence.

      The Company  expects to withdraw  the  effectiveness  of the  Registration
Statement for the resale of your Shares after December 31, 1999. Thereafter, the
Company will exert its good faith  efforts to include your Shares in any "shelf"
registration or other resale  registration  statement  filed by the Company,  if
your restricted holdings exceed the maximum number of shares that you could then
sell under Rule 144, taking into account the Volume Limitation. The Company will
provide you with prior written notice of such registration statements if you are
eligible to participate in such registrations at the time.  Participation in the
registration  will be  subject to all of the terms of the  particular  offering,
including any agreements with underwriters.

      Please note  further  that the Company  will  continue to include you as a
Selling Stockholder under the Registration Statement only if you sign and return
this Registration Rights Agreement to the Company before January 5, 1999.

Dated:  December 29, 1998.

                               Sincerely,


                               MISSION WEST PROPERTIES, INC.

                               By:                            
                                     ------------------------------------------
                               Its:                           
                                     ------------------------------------------
                               Dated:                         
                                     ------------------------------------------

Accepted and agreed:

By:                            
   ------------------------------------------------
   Signature

   ------------------------------------------------
   Print name

   ------------------------------------------------
   Title, if applicable

   ------------------------------------------------
   Represented entity, trust, or other stockholder.

   ------------------------------------------------
   Number of shares




Exhibit 23.3


                      CONSENT OF INDEPENDENT ACCOUNTANTS


We  hereby  consent  to  the   incorporation  by  reference  in  the  Prospectus
constituting  part  of  this   Post-Effective   Amendment  No.  1  to  Form  S-4
Registration  Statement on Form S-3 of Mission West Properties,  Inc.,  formerly
Mission West Properties, of our report dated February 11, 1997, except as to the
1 for 30 reverse  stock split  discussed  in Note 1, which is as of November 10,
1997,  appearing on page F-3 of Mission West  Properties'  Annual Report on Form
10-K for the year ended  December 31, 1997.  We also consent to the reference to
us under the heading "Experts" in such Prospectus.


San Diego, California                        /S/ PricewaterhouseCoopers LLP
February 10, 1999                             -------------------------------




Exhibit 23.4

                      CONSENT OF INDEPENDENT ACCOUNTANTS


We  consent  to the  inclusion  in the  Prospectus  constituting  part  of  this
Post-Effective  Amendment No. 1 to Form S-4  Registration  Statement on Form S-3
(File No.  333-52835-99) of our report dated April 17, 1998 on our audits of the
combined  financial  statements  and  financial  statement  schedule of The Berg
Properties as of December 31, 1997 and 1996 and for the years ended December 31,
1997,  1996 and 1995 and our  reports  dated April 17, 1998 on our audits of the
Combined   Statements  of  Revenue  and  Certain  Expenses  of  the  Kontrabecki
Properties  for the  years  ended  December  31,  1997,  1996  and  1995 and the
Statement of Revenue and Certain Expenses of the Fremont Properties for the year
ended  December  31,  1997.  Additionally,  we consent to the  incorporation  by
reference  of our report  dated March 20, 1998 on our audit of the  consolidated
financial  statements of Mission West  Properties,  Inc.,  formerly Mission West
Properties,  as of and for the year ended November 30, 1997 and one month period
ended December 31, 1997. We also consent to the references to our firm under the
caption "Experts".

San Francisco, California
February 10, 1999                         /s/ PricewaterhouseCoopers LLP
                                         -------------------------------



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