PUBLIC STORAGE PROPERTIES XI INC
10-K405, 1998-03-13
REAL ESTATE INVESTMENT TRUSTS
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-K

[X] Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act
of 1934 [Fee Required]

For the fiscal year ended December 31, 1997

                                       or

[ ] Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange
Act of 1934 [No Fee Required]

For the transition period from            to
                              -----------    -------------

Commission File Number 1-10709
                       -------

                       PUBLIC STORAGE PROPERTIES XI, INC.
                       ----------------------------------
             (Exact name of registrant as specified in its charter)

               California                                        95-4300881  
- ------------------------------------       ------------------------------------
(State  or  other   jurisdiction           (IRS Employer Identification Number)
 of  incorporation  or organization)       

          701 Western Avenue
          Glendale, California                              91201-2349
- ------------------------------------       ------------------------------------
(Address of principal executive offices)                   (Zip Code)

Registrant's telephone number, including area code:  (818) 244-8080
                                                     --------------

           Securities registered pursuant to Section 12(b) of the Act

Common Stock Series A, $.01 par value              American Stock Exchange
- ------------------------------------       ------------------------------------
  (Title of each class)              (Name of each exchange on which registered)

           Securities registered pursuant to Section 12(g) of the Act
                                      None
                                ----------------
                                (Title of class)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports)  and  (2)  has  been  subject  to such  filing
requirements for the past 90 days.

                                    Yes X No
                                        --   --

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of the Company's knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. X
           --

The  aggregate  market value of the voting stock held by  non-affiliates  of the
Company  as  of  February   28,   1998:   Common   Stock   Series  A,  $.01  Par
Value-$31,987,178  (computed  on the basis of  $20-1/8  per share  which was the
reported  closing  sale  price of the  Company's  Common  Stock  Series A on the
American Stock Exchange on February 28, 1998).

The number of shares  outstanding of the Company's classes of common stock as of
February 28, 1998:

            Common Stock, $.01 Par Value - Series A 1,819,937 shares
             Common Stock, $.01 Par Value - Series B 184,453 shares
             Common Stock, $.01 Par Value - Series C 522,618 shares
             ------------------------------------------------------

                       DOCUMENTS INCORPORATED BY REFERENCE

                                      NONE


<PAGE>
                       PUBLIC STORAGE PROPERTIES XI, INC.

                                     PART I.

ITEM 1.  BUSINESS
         --------

General
- -------

     Public  Storage  Properties  XI,  Inc.  (the  "Company")  is a real  estate
investment trust ("REIT") organized as a California  corporation that was formed
to succeed to the business of Public  Storage  Properties XI, Ltd., a California
limited  partnership  (the  "Partnership"),   in  a  reorganization  transaction
completed on December 31, 1990.

     The Partnership offered 84,000 units of limited  partnership  interest (the
"Units") to the public in June 1984. The Partnership's general partners were PSI
Associates  II, Inc.  ("PSA"),  a  California  corporation,  and B. Wayne Hughes
("Hughes").  PSA  was  an  affiliate  of  Public  Storage  Management,  Inc.,  a
California corporation (see below).

     Effective  midnight  December 31, 1990, the Partnership  transferred all of
its assets and liabilities to the Company  pursuant to a plan of  Reorganization
approved  by  a  majority  of  the  limited   partners.   In  exchange  for  the
Partnership's  assets and  liabilities,  the Company issued  2,121,212 shares of
common stock Series A ("Series A shares"), 184,453 shares of common stock Series
B ("Series B shares")  and 522,618  shares of common  stock  Series C ("Series C
shares")  of the  Company  to  the  Partnership.  The  Partnership  then  made a
liquidating  distribution to the limited  partners by distributing 99 percent of
the  Series A shares  (on the basis of 25 Series A shares  for each  Unit).  The
remaining  1 percent  of the  Series A shares and all of the Series B shares and
Series C shares were  distributed  to the  general  partners in respect of their
interests in the Partnership. Subsequent thereto, the Partnership was dissolved.
The Company has elected to be taxed as a REIT for Federal income tax purposes.

     The Company is a finite life REIT, with a term until December 31, 2038 (the
same as the predecessor Partnership). Pursuant to the Company's by-laws, in 1997
the Company was  required to present the  shareholders  with a proposal  for the
sale or financing of the properties and, in the case of a sale, a liquidation of
the Company, unless the properties have already been sold or financed. See "Sale
or Financing" below.

     The Company's  investment  objectives  are (as were the  Partnership's)  to
maximize cash flow from operations and to maximize capital appreciation.

     The Company has acquired 15 properties,  all of which are in operation. The
Company   believes   that  its   mini-warehouses   have   attractive   operating
characteristics.

     In 1995,  there were a series of mergers among Public  Storage  Management,
Inc. (which was the Company's mini-warehouse operator), Public Storage, Inc. and
their affiliates  (collectively,  "PSMI"),  culminating in the November 16, 1995
merger (the "PSMI Merger") of PSMI into Storage Equities, Inc., a REIT listed on
the New York Stock  Exchange.  In the PSMI Merger,  Storage  Equities,  Inc. was
renamed  Public  Storage,  Inc.  ("PSI") and PSI acquired  substantially  all of
PSMI's  United  States real  estate  operations  and became the  operator of the
Company's  mini-warehouse  properties.  Hughes,  the Company's  Chief  Executive
Officer,  and  members  of his  family  (the  "Hughes  Family")  are  the  major
shareholders of PSI. As a result of the PSMI Merger,  PSI owns all of the shares
of the Company's common stock that was owned by PSMI or its affiliates,  and PSI
has an option to acquire all of the shares of the  Company's  common stock owned
by Hughes.

Investments in Facilities
- -------------------------

     At December 31, 1997, the Company owned 15 facilities  located in 7 states:
Arizona (3),  California (3),  Connecticut (1), Kansas (1), Nevada (2), New York
(1) and Texas (4). These facilities consist of 11 mini-warehouses,  two business
park facilities and two combination mini-warehouse/business park facilities.

     The  Company  believes  that its  operating  results  have  benefited  from
favorable   industry   trends  and  conditions.   Notably,   the  level  of  new
mini-warehouse  construction  has decreased while consumer demand has increased.
In addition,  the Company's  mini-warehouses are characterized by a low level of
capital expenditures to maintain their condition and appearance.
                                       2
<PAGE>

     Mini-warehouses

     Mini-warehouses,  which comprise the majority of the Company's  investments
(approximately  81% of the  Company's  revenues  for  the  twelve  months  ended
December 31, 1997), are designed to offer accessible  storage space for personal
and business use at a relatively  low cost. A user rents a fully  enclosed space
which is for the user's  exclusive  use and to which only the user has access on
an  unrestricted   basis  during  business  hours.   On-site  operation  is  the
responsibility  of resident  managers who are supervised by area managers.  Some
mini-warehouses  also  include  rentable  uncovered  parking  areas for  vehicle
storage.  Leases for  mini-warehouse  space may be on a long-term or  short-term
basis,  although typically spaces are rented on a month-to-month  basis.  Rental
rates vary according to the location of the property and the size of the storage
space.

     Users of space in  mini-warehouses  include both  individuals and large and
small  businesses.  Individuals  usually employ this space for storage of, among
other  things,  furniture,  household  appliances,  personal  belongings,  motor
vehicles,  boats,  campers,  motorcycles and other household  goods.  Businesses
normally employ this space for storage of excess  inventory,  business  records,
seasonal goods, equipment and fixtures.

     Mini-warehouses  in which the Company  has  invested  generally  consist of
three to seven  buildings  containing an aggregate of between 350 to 750 storage
spaces, most of which have between 25 and 400 square feet and an interior height
of approximately 8 to 12 feet.

     The Company experiences minor seasonal fluctuations in the occupancy levels
of  mini-warehouses  with  occupancies  higher in the summer  months than in the
winter months. The Company believes that these fluctuations  result in part from
increased moving activity during the summer.

     The  Company's  mini-warehouses  are  geographically  diversified  and  are
generally  located in heavily  populated  areas and close to  concentrations  of
apartment  complexes,  single family  residences  and  commercial  developments.
However,  there may be  circumstances  in which it may be  appropriate  to own a
property  in a less  populated  area,  for  example,  in an area  that is highly
visible  from a major  thoroughfare  and  close to,  although  not in, a heavily
populated area. Moreover,  in certain population centers,  land costs and zoning
restrictions may create a demand for space in nearby less populated areas.

     As with most other types of real estate,  the conversion of mini-warehouses
to  alternative  uses in  connection  with a sale or otherwise  would  generally
require substantial capital  expenditures.  However, the Company does not intend
to convert its mini-warehouses to other uses.

     Commercial Properties

     The  Company's  non-mini-warehouse   investments  are  business  parks  and
low-rise office buildings. The business parks include both industrial and office
space. Industrial space may be used for, among other things, light manufacturing
and assembly, storage and warehousing, distribution and research and development
activities.  The Company  believes  that most of the office space is occupied by
tenants who are also renting  industrial  space.  The remaining  office space is
used for general office  purposes.  A business park may also include  facilities
for commercial uses such as banks, travel agencies,  restaurants,  office supply
shops, professionals or other tenants providing services to the public.

     A business  park  property is typically  divided into units ranging in size
from 600 to 5,000  square  feet.  Parking is open or  covered,  and the ratio of
spaces to rentable square feet ranges from one to four per thousand square feet,
depending upon the use of the property and its location.  Office space generally
requires a greater parking ratio than most industrial uses.

Property Operators
- ------------------

     The Company's mini-warehouse properties are managed by PSI (as successor to
PSMI) pursuant to a Management Agreement and the Company's commercial properties
are managed by American Office Park Properties,  L.P.  ("AOPPLP")  pursuant to a
Management  Agreement.  AOPPLP  is an  operating  partnership  formed to own and
operate  business parks in which PSI has a significant  economic  interest.  The
general partner of AOPPLP is American Office Park Properties, Inc., an affiliate
of PSI.

                                       3
<PAGE>

     Under  the  supervision  of the  Company,  PSI and  AOPPLP  coordinate  the
operation  of the  facilities,  establish  rental  policies  and  rates,  direct
marketing  activity,   and  direct  the  purchase  of  equipment  and  supplies,
maintenance activity, and the selection and engagement of all vendors,  supplies
and independent contractors.

     PSI and AOPPLP  engage,  at the expense of the Company,  employees  for the
operation of the Company's  facilities,  including resident managers,  assistant
managers, relief managers, and billing and maintenance personnel. Some or all of
these employees may be employed on a part-time basis and may also be employed by
other persons, partnerships,  REITs or other entities owning facilities operated
by PSI or AOPPLP.

     In the  purchasing of services  such as  advertising  (including  broadcast
media advertising) and insurance, PSI and AOPPLP attempt to achieve economies by
combining the resources of the various facilities that they operate.  Facilities
operated by PSI and AOPPLP have historically  carried  comprehensive  insurance,
including fire, earthquake, liability and extended coverage.

     PSI has  developed  systems for space  inventory,  accounting  and handling
delinquent  accounts,  including a  computerized  network  linking PSI  operated
facilities. Each project manager is furnished with detailed operating procedures
and typically  receives  facilities  management  training from PSI. Form letters
covering a variety of circumstances are also supplied to the project managers. A
record of actions  taken by the project  managers  when  delinquencies  occur is
maintained.

     The Company's  facilities  are  typically  advertised  via signage,  yellow
pages,  flyers  and  broadcast  media  advertising  (television  and  radio)  in
geographic  areas  in  which  many  of the  Company's  facilities  are  located.
Broadcast  media  and  other  advertising  costs are  charged  to the  Company's
facilities located in geographic areas affected by the advertising. From time to
time,  PSI  or  AOPPLP  adopt  promotional  programs,  such  as  temporary  rent
reductions, in selected areas or for individual facilities.

     For as long as the respective  Management  Agreement is in effect,  PSI has
granted the  Company a  non-exclusive  license to use two PSI service  marks and
related designs (and AOPPLP has granted the Company a  non-exclusive  license to
use a PSI service  mark and related  designs),  including  the "Public  Storage"
name, in conjunction with rental and operation of facilities managed pursuant to
the  Management  Agreement.   Upon  termination  of  the  respective  Management
Agreement,  the Company  would no longer have the right to use the service marks
and related designs except as described below. Management believes that the loss
of the right to use the service marks and related  designs could have a material
adverse effect on the Company's business.

     Each Management  Agreement,  as amended in February 1995, provides that (i)
the Management  Agreement will expire in February 2002 provided that in February
of  each  year  it  shall  be  automatically  extended  for  one  year  (thereby
maintaining a seven-year  term) unless either party  notifies the other that the
Management  Agreement  is not being  extended,  in which  case it expires on the
first  anniversary  of its  then  scheduled  expiration  date.  Each  Management
Agreement may also be  terminated  by either party for cause,  but if terminated
for cause by the  Company,  the  Company  retains  the rights to use the service
marks  and  related  designs  until  the  then  scheduled  expiration  date,  if
applicable, or otherwise a date seven years after such termination.

     Certain of the directors and officers of the Company are also directors and
officers of PSI.

Competition
- -----------

     Competition  in  the  market  areas  in  which  the  Company   operates  is
significant  and  affects  the  occupancy  levels,  rental  rates and  operating
expenses of certain of the Company's facilities.  Competition may be accelerated
by any increase in availability  of funds for investment in real estate.  Recent
increases in plans for  development  of  mini-warehouses  is expected to further
intensify competition among mini-warehouse operators in certain market areas. In
addition to competition  from  mini-warehouses  operated by PSI, there are three
other  national  firms and numerous  regional and local  operators.  The Company
believes  that  the  significant  operating  and  financial  experience  of  its
executive  officers and directors,  PSI,  AOPPLP and the "Public  Storage" name,
should  enable  the  Company  to  continue  to  compete  effectively  with other
entities.

                                       4
<PAGE>
Other Business Activities
- -------------------------

     A corporation owned by the Hughes Family reinsures  policies against losses
to goods  stored  by  tenants  in the  Company's  mini-warehouses.  The  Company
believes that the availability of insurance  reduces the potential  liability of
the Company to tenants for losses to their goods from theft or destruction. This
corporation  receives  the  premiums  and bears the  risks  associated  with the
insurance.

     A  corporation,  in which PSI has a 95%  economic  interest  and the Hughes
Family has a 5% economic interest,  sells locks, boxes and tape to tenants to be
used in securing  their  spaces and moving their  goods.  PSI believes  that the
availability of locks, boxes and tape for sale promotes the rental of spaces.

Sale or Financing
- -----------------

     The by-laws of the Company provide that, during 1997,  unless  shareholders
have previously  approved such a proposal,  the  shareholders  will be presented
with a proposal to approve or  disapprove  (a) the sale or  financing  of all or
substantially  all of the  properties and (b) the  distribution  of the proceeds
from  such  transaction  and,  in the  case of a sale,  the  liquidation  of the
Company. The Company has proposed to merge with American Office Park Properties,
Inc. in lieu of liquidating. See "Proposed Merger".

Employees
- ---------

     As of December  31,  1997,  the Company  had 52  employees,  30 persons who
render services on behalf of the Company on a full-time basis and 22 persons who
render services on a part-time basis (6 of whom were executive officers).  These
persons include resident managers, assistant managers, relief managers, district
managers, and administrative and maintenance personnel.

Federal Income Tax
- ------------------

     The Company  intends to continue to operate in a manner so as to qualify as
a REIT under the Internal Revenue Code of 1986, as amended, but no assurance can
be given that the Company  will be able to continue to qualify at all times.  By
qualifying  as a REIT,  the Company  can deduct  dividend  distributions  to its
shareholders for Federal income tax purposes,  thus effectively  eliminating the
"double  taxation"  (at the  corporate and  shareholder  levels) that  typically
applies to corporate  dividends.  The Company  believes it is in compliance with
these  requirements  and,  accordingly,  no provision  for income taxes has been
made.

Year 2000 Compliance
- --------------------

     PSI has  completed  an initial  assessment  of its  computer  systems.  The
majority of the computer  programs were  installed or upgraded over the past few
years and are Year 2000 compliant.  Some of the older computer programs utilized
by PSI were written without regard for Year 2000 issues and could cause a system
failure or miscalculations with possible disruption of operations. Each of these
computer  programs and systems has been  evaluated to be upgraded or replaced as
part of PSI Year 2000 project.

     The cost of the Year 2000 project will be allocated to all  companies  that
use the PSI  computer  systems.  The  cost of the  Year  2000  project  which is
expected to be  allocated to the Company is less than  $40,000.  The cost of new
software will be will be  capitalized  and the cost of  maintenance  to existing
systems will be expensed as incurred.

     The project is expected to be completed by March 31, 1999 which is prior to
any   anticipated   impact  on  operating   systems.   PSI  believes  that  with
modifications to existing software and, in some instances, the conversion to new
software,  the Year 2000 issue will not pose significant  operational  problems.
However,  if such  modifications are not made, or are not completed timely,  the
Year 2000 issue could have a material impact on the operations of the Company.

     The  costs  of the  project  and the  date on which  PSI  believes  it will
complete the Year 2000  modifications  are based on management's best estimates,
which were derived utilizing numerous assumptions of future events. There can be
no guarantee  that these  estimates  will be achieved and actual  results  could
differ materially from those anticipated.

                                       5
<PAGE>
Proposed Merger
- ---------------

     The Company and American Office Park Properties,  Inc. (AOPP),  the general
partner of  AOPPLP,  have  agreed,  subject  to  certain  conditions,  to merge,
pursuant to an Amended and Restated  Agreement and Plan of Reorganization by and
among  The  Company,  AOPP and PSI  dated as of  December  17,  1997.  AOPP,  an
affiliate of PSI, owns and operates  commercial  properties directly and through
AOPPLP.  Upon  the  merger  of AOPP  into  the  Company,  each of the  1,819,937
outstanding  shares of the Company common stock series A (other than shares held
by holders of the Company Common stock series A (" Series A  Shareholders")  who
have properly exercised dissenters' rights under California law ) would continue
to be owned by the Series A Shareholders  or converted into the right to receive
cash as follows:  (i) with respect to up to 20% of the outstanding  common stock
series A of the Company,  $20.50 in cash and (ii) the balance of the outstanding
common stock series A of the Company would  continue to be owned by the Series A
Shareholder.  In the merger, (i) each share of the Company's common stock series
B and each share of the Company's  common stock series C would be converted into
 .8641 shares of the  Company's  common stock series A (or up to 20% in cash) and
(ii) each share of AOPP's  capital  stock will be converted  into 1.18 shares of
the  Company's  common stock series A (or up to 20% in cash).  After the merger,
the Company would have  approximately  14,200,000  outstanding  shares of common
stock series A (assuming no cash  elections,  with  approximately  an additional
6,222,000 shares reserved for issuance upon conversion of partnership  interests
of AOPPLP  into the  Company's  common  stock  series A. After the  merger,  the
ownership of the Company by public  shareholders will be reduced  significantly.
As a result of the  merger,  the  Company's  name will be changed to PS Business
Parks,  Inc.  and  AOPPLP's  name will be changed  to PS  Business  Parks,  L.P.
Concurrently with the merger, the Company will exchange 13  mini-warehouses  for
11 commercial properties owned by PSI. The merger is conditioned on, among other
requirements,  approval by the  Company's  shareholders.  After the merger,  the
Company will be a self-managed and self-advised  REIT which will own and operate
directly and through AOPPLP 62 commercial  properties  located in 10 states with
approximately  6.9 million net  rentable  square feet of space and, in addition,
will manage,  for a fee, 36  commercial  properties.  A meeting of the Company's
shareholders  is scheduled  for March 16, 1998. If the merger is approved at the
March 16, 1998 meeting, it is expected to close shortly thereafter.



                                       6
<PAGE>



ITEM 2.  PROPERTIES.
         ----------

     The following  table sets forth  information  as of December 31, 1997 about
properties owned by the Company:
<TABLE>
<CAPTION>

                                                     Size of         Net Rentable       Number of        Completion
                        Location                      Parcel             Area            Spaces             Date
         --------------------------------------     ----------      ---------------     ---------       -----------
         ARIZONA
<S>                                                 <C>               <C>                   <C>               <C> 
         Phoenix, Black Cyn. Hwy. (a)               3.33 acres        71,000 sq. ft.        366          Jul. 1985
         Phoenix, Grand Ave. (a)                    6.68 acres       111,000 sq. ft.        417           May 1985
         Tempe, Broadway Rd.                        1.47 acres        45,000 sq. ft.        403          Oct. 1984

         CALIFORNIA
         Colma, El Camino Real                      2.72 acres        51,000 sq. ft.        494          Dec. 1984
         Pasadena, Arroyo Parkway I (b)             2.61 acres       110,000 sq. ft.        935          Feb. 1985
         So. San Francisco, Produce (a)             1.67 acres        41,000 sq. ft.         23          Mar. 1986

         CONNECTICUT
         Branford, U.S. Route (c)                   2.76 acres        37,000 sq. ft.        327          Nov. 1984

         KANSAS
         Overland Park, I-435 (a)                   4.34 acres        62,000 sq. ft.         42          Apr. 1985

         NEW YORK
         Long Island, Southern Blvd.                4.00 acres        60,000 sq. ft.        545          Jun. 1986

         NEVADA
         Las Vegas, Charleston Blvd.                1.76 acres        54,000 sq. ft.        442          Oct. 1984
         Las Vegas, Tropicana Ave.                  1.93 acres        66,000 sq. ft.        531          Nov. 1984

         TEXAS
         Arlington, Pioneer Pkwy.                   2.50 acres        61,000 sq. ft.        544          Jul. 1985
         Austin, Ben White Blvd.                    2.62 acres        53,000 sq. ft.        453          Feb. 1986
         Houston, Antoine Dr.                       2.75 acres        62,000 sq. ft.        558          Oct. 1984
         Jacinto City, I-10                         1.88 acres        45,000 sq. ft.        393          Nov. 1984
</TABLE>
- -------------
(a)  The property or a portion of the property has been  developed as a business
     park.
(b)  Property subject to a partial  condemnation action by the City of Pasadena.
     Action will result in reduction in size and reconfiguration of property.
(c)  This property's net rentable area contains office space or a combination of
     office and light industrial space.

     Substantially  all of the Company's  facilities  were acquired prior to the
time that it was customary to conduct environmental investigations in connection
with  property  acquisitions.  During the fourth  quarter of 1995,  the  Company
completed   environmental   assessments   of  its  properties  to  evaluate  the
environmental  condition of, and  potential  environmental  liabilities  of such
properties.  These  assessments  were performed by an independent  environmental
consulting firm. Based on the assessments, the Company expensed $106,000 in 1995
for known environmental remediation requirements.

     The  Company's  properties  are operated to maximize  cash flow through the
regular  review of and,  when  warranted by market  conditions,  adjustments  to
scheduled rents. Approximately 81% of the Company's portfolio (based on revenues
for 1997) are mini-warehouses and the balance consists of commercial properties.
As reflected in the table below,  the Company has  experienced  stable  property
operations:


                                       7
<PAGE>
<TABLE>
<CAPTION>
                                                                              For the year ended December 31,
                                                                        -------------------------------------------
                                                                         1997             1996             1995
                                                                        ----------  ---------------    ------------
<S>                                                                       <C>              <C>               <C>
Weighted average occupancy level (1)                                      93%              92%               92%
Realized annual rent per occupied square foot (1) (2)                   $8.96            $8.67             $8.34
- -------------
(1)  Mini-warehouse facilities only.
(2)  Realized  rent per square foot  represents  the actual  revenue  earned per
     occupied square foot.  Management  believes this is a more relevant measure
     than the posted rental rates,  since posted rates can be discounted through
     the use of promotions. Includes administrative and late fees.

</TABLE>
     Additional   information   is  set  forth   below   with   respect  to  the
Pasadena/Arroyo Parkway I and Overland Park properties because they are the only
properties  with a book value of at least 10% of the total assets of the Company
or that have accounted for gross revenues of at least 10% of the aggregate gross
revenues of the Company.

     PASADENA/ARROYO  PARKWAY  I. This  mini-warehouse  property  is  located in
Pasadena,   California,   just  south  of  the  central  business  district  and
approximately  eight miles  northeast of downtown  Los Angeles.  The property is
surrounded by densely populated residential developments.

     The  2.61-acre  property,  which was  completed  in 1985,  consists  of one
building containing  approximately 110,000 net rentable square feet divided into
935 units.  No tenant occupies 10% or more of the rentable area. At December 31,
1997, the property was 95% occupied by 888 tenants.

     Set forth below is a schedule  showing the occupancy  rate and the rent per
square foot for the property at the dates indicated:

                                                             Annual Realized
                                                              Rent Per Square
            Date                        Occupancy Rate              Foot
  ------------------------            ------------------   --------------------
     December 31, 1997                       95%                   $12.17
     December 31, 1996                       93                     11.27
     December 31, 1995                       90                     10.84
     December 31, 1994                       92                     10.38
     December 31, 1993                       92                      9.91

     OVERLAND PARK. This property, a business park, is located in Overland Park,
Kansas, which is a suburban community  approximately ten miles south of downtown
Kansas City,  Missouri.  The business park offers a combination  of office space
and industrial  space.  The office space is suitable for general  management use
and  interaction  with  customers.  The  industrial  space is suitable for light
manufacturing, assembly, distribution or research and development.

     The property has good exposure and  accessibility  from Interstate 435 near
Metcalf Avenue, a busy surface street leading to downtown Kansas City.  Situated
on 4.34 acres,  the business  park  contains  approximately  62,000 net rentable
square feet divided into 42 units.  The property,  which opened in 1985, was 98%
occupied at December 31, 1997 by 39 tenants.  No tenant  occupies 10% or more of
the rentable area.

     Set forth below is a schedule  showing the occupancy  rate and the rent per
square foot for the property at the dates indicated:

                                                                Annual Realized
                                                                Rent Per Square
             Date                        Occupancy Rate              Foot
  ------------------------            ------------------   --------------------
      December 31, 1997                       98%                    $9.76
      December 31, 1996                       99                      9.26
      December 31, 1995                       93                      8.91
      December 31, 1994                       90                      8.97
      December 31, 1993                       90                      9.52

                                       8
<PAGE>

     A schedule  showing  the total  annual  base rent and  percentage  of total
income  relating  to leases  according  to their  expiration  dates is set forth
below:

           Year of                  Total Amt.         Percentage of
         Expiration*                Base Rent           Total Income
 ------------------------      ------------------   --------------------
             1998                   $332,000              60.04%
             1999                    151,000              27.31
             2000                     48,000               8.68
             2001                     18,000               3.25
             2002                      4,000               0.72
                               ------------------   --------------------
            Total                   $553,000             100.00%
                               ==================   ====================

- --------------
*    Assumes  that none of the  renewal  options  included in the leases will be
     exercised.


ITEM 3.   LITIGATION.
          ----------

      None.

ITEM 4.   SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
          ----------------------------------------------------

     No matters were  submitted to a vote of security  holders during the fourth
quarter 1997.

                                    PART II.

ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS.
         ----------------------------------------------------------------------

     The  Company's  Series A shares are  registered  under Section 12(b) of the
Securities  Exchange Act of 1934 on the American  Stock Exchange  ("AMEX"),  and
commenced  trading  on March 27,  1991 under the  symbol  PSM.  The Series B and
Series C shares  were not  registered  under  Section 12 of the  Securities  and
Exchange Act of 1934 and no public  trading  market  exists for the Series B and
Series C shares.

     The Company's  Articles of  Incorporation  provide that the Series B shares
and  Series  C shares  will  convert  automatically  into  Series A shares  on a
share-for-share  basis (the "Conversion") when (A) the sum of (1) all cumulative
dividends  and other  distributions  from all sources  paid with  respect to the
Series A shares (including liquidating distributions, but not including payments
made to redeem  such stock  other than in  liquidation)  and (2) the  cumulative
Partnership  distributions from all sources with respect to all Units (including
the General  Partners' 1% interest)  equals (B) the product of $20 multiplied by
the  number  of the  then  outstanding  "Original  Series  A  shares".  The term
"Original   Series  A  shares"   means  the  Series  A  shares   issued  in  the
Reorganization.

     In general,  the Series A shares,  Series B shares and Series C shares have
equal voting rights.  The Company's  bylaws provide that during the period prior
to the  conversion of the Series B and Series C shares into Series A shares,  in
all  shareholder  matters voted on by the  Partnership's  general  partners (the
"General  Partners") or their  successors in interest as holders of Series B and
Series C shares,  other than the  election  and removal of  directors  and other
proposals  relating to the control of the Company and its business,  the General
Partners and any  successors  in interest have agreed to vote their Series B and
Series C shares with the holders of a majority of the  outstanding  unaffiliated
Series A shares entitled to vote.


                                       9
<PAGE>

Market Prices and Dividends
- ---------------------------

     The  following  table sets forth the high and low sales  prices on the AMEX
composite  tape per Series A share and dividends per Series A share and Series B
share for fiscal 1996 and 1997:
<TABLE>
<CAPTION>

                                                                   Sales Price          Cash Dividends
     Year                      Quarter Ended                    High         Low           Declared*
- -----------      --------------------------------------        --------     -------     ---------------
<C>              <C>                                           <C>         <C>                  <C>  
1996             March 31                                       $18-3/8     $16-7/8             $0.34
                 June 30                                         18-7/8      17-5/8              0.34
                 September 30                                    20-1/2      18-1/2              0.34
                 December 31                                     20-3/8      19-1/8              0.34

1997             March 31                                       $20-3/8     $19-3/8             $0.34
                 June 30                                         20-1/8      19-3/8              0.34
                 September 30                                   21-7/16     19-5/16              0.34
                 December 31                                     23-1/2      20-1/2              0.34
</TABLE>
*   No dividends were declared on the Series C shares.

     As of December 31, 1997, there were  approximately 940 holders of record of
the Company's Series A shares.

     Holders of Series A shares are entitled to receive  distributions  when, as
and if declared by the Board of Directors out of any funds legally available for
that purpose. The Company, as a REIT, is required to distribute, prior to filing
its tax  return,  at least  95% of its "real  estate  investment  trust  taxable
income,"  which,  as defined by the relevant tax  statutes and  regulations,  is
generally   equivalent   to  net  taxable   ordinary   income.   Under   certain
circumstances,  the  Company  can  rectify a failure  to meet this  distribution
requirement by paying dividends after the close of a particular taxable year.

     A principal policy of the Company is to make quarterly cash  distributions.
The Company  intends to make quarterly cash  distributions  out of funds legally
available, as determined by the Company's Board of Directors.

     For Federal income tax purposes,  distributions to shareholders are treated
as ordinary income,  capital gains, return of capital or a combination  thereof,
and for the past three years all distributions  have been classified as ordinary
income.

     Under  generally  accepted  accounting  principles,   net  income  exceeded
distributions for each of the past three years.

     Series A shares are entitled to participate  equally in distributions  when
declared  by the  Board  of  Directors  and in the  Company's  net  assets  upon
dissolution and liquidation  after repayment of the Company's  liabilities.  The
Series B shares (prior to  conversion  into Series A shares) are not entitled to
participate  in  distributions  attributable  to  sales  or  financings  of  the
properties or the  liquidation  of the Company,  but will  participate  in other
distributions  on the same  basis as the  Series A shares.  The  Series C shares
(prior to conversion  into Series A shares) are not entitled to  participate  in
any distributions, including liquidating distributions.

Repurchase of Company's common stock
- ------------------------------------

     If  considered  to be an  attractive  investment  opportunity  or in  other
appropriate circumstances, the Company may repurchase its Series A shares out of
legally available funds, if approved by the Board of Directors.

     As of February 27, 1997,  the Board of Directors has authorized the Company
to repurchase up to 400,000 Series A shares. From 1991 through 1996, the Company
repurchased  301,275 Series A shares.  The Company  repurchased  36,400 Series A
shares during 1996; no additional  Series A shares were  repurchased  in 1997 or
during the period from January 1, 1998 to February 28, 1998.

                                       10
<PAGE>
ITEM 6.   SELECTED FINANCIAL DATA.
          -----------------------

     The following selected  historical  financial  information has been derived
from the audited financial statements of the Company.
<TABLE>
<CAPTION>


                                                                     Years Ended December 31,
                                              -----------------------------------------------------------------------
                                               1997            1996              1995            1994          1993
                                              -------        -------           -------          -------       -------
                                                               (In thousands, except per share data)
Operating data:
- ---------------
REVENUES:
<S>                                            <C>            <C>              <C>               <C>           <C>   
   Rental income                               $7,561         $7,220           $6,859            $6,651        $6,387
   Interest and other income                       82             33               19                21            40
                                              -------        -------           -------          -------       -------
                                                7,643          7,253            6,878             6,672         6,427
                                              -------        -------           -------          -------       -------

EXPENSES:
   Cost of operations                           2,324          2,334            2,265             2,107         2,083
   Management fees paid to affiliates             440            394              400               388           371
   Depreciation                                 1,198          1,150            1,105             1,046         1,047
   General and administrative                     201            217              205               208           233
   Environmental cost                              -              -               106                -             -
   Interest expense                                -               3                1                -             -
                                              -------        -------           -------          --------      -------
                                                4,163          4,098            4,082              3,749        3,734
                                              -------        -------           -------          --------      -------

NET INCOME                                     $3,480         $3,155           $2,796             $2,923       $2,693
                                              =======        =======           =======          ========      =======

Balance sheet data:
- -------------------
Total assets                                  $28,846        $28,129          $28,388           $28,767       $30,055
Shareholders' equity                           27,371         26,617           26,883            27,398        28,592

Net income per Series A share(2):
   Basic                                        $1.77          $1.59            $1.37             $1.39         $1.23
   Diluted                                      $1.38          $1.24            $1.09             $1.11         $1.00

Distributions declared per share(3)(4):
   Series A                                     $1.36          $1.36            $1.36             $1.36         $1.36
   Series B                                     $1.36          $1.36            $1.36             $1.36         $1.36
Book value per share(5):                       $10.83         $10.53           $10.49            $10.56        $10.71


Weighted average Common shares outstanding:
    Basic- Series A                             1,820          1,831            1,863             1,926        1,988
    Diluted- Series A                           2,527          2,538            2,571             2,633        2,696

Other data:
- -----------
Net cash provided by
   operating activities                        $4,382         $4,485            $3,786           $3,899        $3,780
Net cash used in investing activities            (491)          (507)             (472)            (216)         (135)
Net cash used in financing activities          (2,726)        (3,434)           (3,322)          (4,143)       (2,989)
Funds from operations (1)                       4,678          4,305             4,007            3,969         3,740
Capital expenditures
   to maintain facilities                        (491)          (507)             (472)            (216)         (135)

</TABLE>
                                       11
<PAGE>



ITEM 6.  SELECTED FINANCIAL DATA (CONTINUED)
         ------------------------------------

(1)    Funds from  operations  (FFO) is defined by the Company,  consistent with
       the  definition  of  FFO by  the  National  Association  of  Real  Estate
       Investment Trusts (NAREIT),  as net income (loss) (computed in accordance
       with generally accepted  accounting  principles) before  depreciation and
       extraordinary  or  non-recurring  items.  FFO is  presented  because  the
       Company,  as well  as  many  industry  analysts,  consider  FFO to be one
       measure  of the  performance  of the  Company,  ie,  one  that  generally
       reflects changes in the Company's net operating income. FFO does not take
       into  consideration  scheduled  principal  payments  on debt and  capital
       improvements.  Accordingly,  FFO is not  necessarily a substitute for the
       Company's cash flow or net income as a measure of the Company's liquidity
       or operating  performance or ability to pay  distributions.  Furthermore,
       the NAREIT  definition  of FFO does not address the  treatment of certain
       items  and all REITs do not treat  items the same way in  computing  FFO.
       Accordingly, comparisons of levels of FFO among REITs may not necessarily
       be meaningful.

(2)    Net income  per share is  presented  on a basic and  diluted  basis.  The
       earnings per share  amount prior to 1997 have been  reflected as required
       to comply with  statement  of  Financial  Accounting  Standards  No. 128,
       Earnings per Share. For further  discussion of earnings per share and the
       impact  of  Statement  No.  128,  see notes to the  financial  statements
       beginning  on  page  F-6.  Basic   earnings  per  share   represents  the
       shareholders'  rights to distribution out of the respective  period's net
       income,  which is calculated  by dividing net income after  reduction for
       any distributions  made to the holders of the Company Common Stock Series
       B (holders of the Company  Common Stock Series C are not entitled to cash
       distributions)  by the weighted  average  number of shares of the Company
       Common  Stock  Series A. (See note 4 below.)  Diluted  earnings per share
       assumes  conversion  of the Company  Common Stock Series B and C into the
       Company Common Stock Series A.

(3)    In connection with the  reorganizations of the Company  Partnership,  the
       Company  issued the Company  Common  Stock Series A, B and C. The capital
       structure of the Company was  designed to reflect the economic  rights of
       the limited partners and general partners in the Company  Partnership and
       the capital shares were  distributed to the limited and general  partners
       in respect of their interest in the Company Partnership.

       The  Company's  Common Stock Series A shares are entitled to 100% of cash
       distributions  from  operations from the Company until (a) the sum of (1)
       all cumulative  dividends and other distributions from all sources to the
       holders of the Common  Stock Series A shares and (2) the  cumulative  the
       Company  distributions  from all sources  with respect to all units equal
       (b) the product of $20  multiplied by the number of the  then-outstanding
       "Common  Stock  Series A shares," at which time the Company  Common Stock
       Series B and Common Stock Series C shares will  automatically  convert to
       the Company Common Stock Series A shares ("Conversion").

       As of  December  31,  1997,  Conversion  will  occur when  $4,783,000  in
       additional  distributions are made to holders of the Company Common Stock
       Series A (assuming  no further  repurchases  of the Company  Common Stock
       Series A).

(4)    For federal  income tax  purposes,  distributions  on the Company  Common
       Stock for 1993, 1994, 1995, 1996, and 1997 were from ordinary income. For
       GAAP income purposes,  net income exceeded  distributions  for 1994-1997;
       for 1993,  distributions  exceeded net income by $258,000.  Distributions
       for each year include  distributions  declared  during the fourth quarter
       and  paid  in  January.   The   difference   between  the  components  of
       distributions  for GAAP purposes and tax purposes results  primarily from
       the methods used to compute depreciation expense.(footnote to be update)

(5)    Book  value  per  share  computed  based on the  number  of shares of the
       Company  Common  Stock  Series A, B and C  outstanding  at the end of the
       period.


                                       12
<PAGE>

ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS.
         -----------------------------------------------------------------------

RESULTS OF OPERATIONS.
- ----------------------

      YEAR ENDED  DECEMBER 31, 1997 COMPARED TO YEAR ENDED DECEMBER 31, 1996.
      -----------------------------------------------------------------------
Net income in 1997 was $3,480,000  compared to $3,155,000 in 1996,  representing
an increase of $325,000 or 10%. Net income per diluted  Series A share was $1.38
in 1997 compared to $1.24 in 1996,  representing  an increase of $.14 or 11% per
share. These increases are due to an increase in property net operating income.

     During 1997,  property net  operating  income  (rental  income less cost of
operations,  management  fees  paid  to  affiliates  and  depreciation  expense)
increased  $257,000 from $3,342,000 in 1996 to $3,599,000 in 1997. This increase
is attributable to an increase in rental income at the Company's  mini-warehouse
and business park operations.

     Rental income for the  mini-warehouse  operations  increased $267,000 or 5%
from  $5,876,000 in 1996 to $6,143,000  in 1997.  Cost of operations  (including
management  fees paid to an affiliate of the  Company)  increased  $24,000 or 1%
from  $2,056,000 in 1996 to $2,080,000 in 1997. The results of these changes was
a net increase in property net operating income before  depreciation  expense of
$243,000 or 6% from  $3,820,000 in 1996 to  $4,063,000 in 1997.  The increase in
rental  income is primarily  due to an increase in rental rates at a majority of
the Company's mini-warehouse  properties.  The increase in cost of operations is
primarily due to an increase in  management  fees and property  taxes  partially
offset by decreases in snow removal and tenant legal claims costs.  Snow removal
costs were higher in 1996 than  amounts  typically  incurred  due to higher than
normal  snow  levels  experienced  at the  Company's  mini-warehouse  properties
located in the eastern states.

     Property net operating income before  depreciation  expense with respect to
the Company's business park operations  increased by $62,000 or 9% from $673,000
in 1996 to  $735,000  in 1997.  This  increase  is due to an  increase in rental
income at the Company's  four business park  facilities as a result of increases
in rental rates. Cost of operations remained stable in 1997 compared to 1996.

     Weighted  average   occupancy  levels  were  93%  for  the   mini-warehouse
facilities and 98% for the business park  facilities in 1997 compared to 92% for
the mini-warehouse facilities and 97% for the business park facilities in 1996

     In 1995, the Company  prepaid eight months of 1996  management  fees on its
mini-warehouse  discounted at the rate of 14% per year to  compensate  for early
payment. As a result, management fee expense for the twelve month ended December
31, 1996 was $26,000  lower than it would have been without the  discounted  fee
structure.

     YEAR ENDED  DECEMBER 31, 1996 COMPARED TO YEAR ENDED DECEMBER 31, 1995.
     -----------------------------------------------------------------------
Net income in 1996 was $3,155,000  compared to $2,796,000 in 1995,  representing
an increase of $359,000 or 13%. Net income per diluted  Series A share was $1.24
in 1996 compared to $1.09 in 1995,  representing  an increase of $.15 or 14% per
share.  These  increases  are  primarily  due to an  increase  in  property  net
operating income combined with the favorable impact of comparing to expenses for
1995 which included a  non-recurring  charge for  environmental  assessments and
provision for future remediation costs.

     During 1996,  property net  operating  income  (rental  income less cost of
operations,  management  fees  paid  to  affiliates  and  depreciation  expense)
increased  $253,00 from  $3,089,000 in 1995 to $3,342,000 in 1996. This increase
is  primarily  attributable  to an  increase in rental  income at the  Company's
mini-warehouse and business park operations.

     Rental income for the  mini-warehouse  operations  increased $245,000 or 4%
from  $5,631,000 in 1995 to $5,876,000  in 1996.  Cost of operations  (including
management  fees paid to an affiliate of the  Company)  increased  $63,000 or 3%
from  $1,993,000 in 1995 to $2,056,000 in 1996. The results of these changes was
a net increase in property net operating income before  depreciation  expense of
$181,000 or 5% from  $3,639,000 in 1995 to  $3,820,000 in 1996.  The increase in
rental  income is primarily  due to an increase in rental rates at a majority of
the Company's mini-warehouse  properties.  The increase in cost of operations is
primarily due to increases in payroll,  repairs and  maintenance and advertising
expense.  Repairs and  maintenance  increased  due mainly to an increase in snow
removal and  landscaping  costs.  Snow removal costs increased due to the higher
than normal snow levels experienced at the Company's  mini-warehouse  properties
located in the eastern states.

                                       13
<PAGE>

     Property net operating income before  depreciation  expense with respect to
the Company's business park operations increased by $117,00 or 21% from $556,000
in 1995 to  $673,000  in 1996.  This  increase  is due to an  increase in rental
income at the Company's  four business park  facilities as a result of increases
in rental rates. Cost of operations remained stable in 1996 compared to 1995.

     Weighted  average   occupancy  levels  were  92%  for  the   mini-warehouse
facilities and 97% for the business park  facilities in 1996 compared to 92% for
the mini-warehouse facilities and 95% for the business park facilities in 1995.

     In 1995, the Company  prepaid eight months of 1996  management  fees on its
mini-warehouse  operations  (based  on the  management  fees for the  comparable
period during the calendar year immediately preceding the prepayment) discounted
at the  rate of 14% per year to  compensate  for  early  payment.  In 1996,  the
Company  expensed  the  prepaid  management  fees.  The  amount is  included  in
management  fees paid to affiliates in the statements of income.  As a result of
the  prepayment,  the Company saved  approximately  $26,000 in management  fees,
based on the  management  fees that  would have been  payable  on rental  income
generated in 1996 compared to the amount prepaid.

     During 1996, the Company incurred $3,000 in interest expense on its line of
credit facility.

Mini-warehouse Operating Trends.
- --------------------------------

     The following table  illustrates the operating  trends for the Company's 13
mini-warehouses:
<TABLE>
<CAPTION>
                                                                           For the year ended December 31,
                                                                           -------------------------------
                                                                      1997                1996            1995
                                                                      ----                ----            ----
<S>                                                                     <C>                <C>             <C>
Weighted average occupancy level                                        93%                92%             92%
Realized annual rent per occupied square foot (1)                     $8.96              $8.67           $8.34
</TABLE>

(1)    Realized rent per square foot  represents  the actual  revenue earned per
       occupied square foot. Management believes this is a more relevant measure
       than the  posted  rental  rates,  since  posted  rates can be  discounted
       through the use of promotions. Includes administrative and late fees.

LIQUIDITY AND CAPITAL RESOURCES.
- --------------------------------

     CAPITAL STRUCTURE.  The Company's  financial profile has been characterized
by increasing  cash provided by operating  activities and increasing  funds from
operations ("FFO").

     NET CASH PROVIDED BY OPERATING ACTIVITIES AND FUNDS FROM OPERATIONS.
The Company  believes  that  important  measures of its  performance  as well as
liquidity are net cash provided by operating activities and FFO.

     Net cash provided by operating  activities reflects the cash generated from
the  Company's  business  before   distributions  to  shareholders  and  capital
expenditures.

     The Company has an  unsecured  revolving  credit  facility  with a bank for
borrowings up to $3,000,000 for working  capital  purposes and to repurchase the
Company's stock. Outstanding borrowings on the credit facility, at the Company's
option,  bear  interest  at either the bank's  prime rate plus .25% or the LIBOR
rate plus 2.25%.  Interest is payable monthly.  On December 31, 1999, all unpaid
principal and accrued  interest is due and payable.  During the first quarter of
1996, the Company  borrowed and repaid $250,000 on its line of credit  facility.
At December 31, 1997, there was no outstanding balance on the credit facility.

     The  following  table  summarizes  the  Company's  ability to make  capital
improvements  to maintain  its  facilities  through the use of cash  provided by
operating activities. The remaining cash flow is available to the Company to pay
distributions to shareholders and repurchase its stock.


                                       14
<PAGE>
<TABLE>
<CAPTION>
                                                                                   Years ended December 31,
                                                                     ---------------------------------------------
                                                                        1997              1996              1995
                                                                     -----------   ----------------   -------------
                <S>                                                  <C>               <C>              <C>       
                Net income                                           $3,480,000        $3,155,000       $2,796,000
                Environmental cost                                        -                 -              106,000
                Depreciation                                          1,198,000         1,150,000        1,105,000
                Changes in working capital                             (296,000)          180,000         (221,000)
                                                                     -----------   ----------------   -------------

                Net cash provided by operating activities             4,382,000         4,485,000        3,786,000
                Capital improvements to maintain facilities            (491,000)         (507,000)        (472,000)
                                                                     -----------   ----------------   -------------
                Funds available for distributions to
                     shareholders and repurchase of stock             3,891,000         3,978,000        3,314,000
                Cash distributions to shareholders                   (2,726,000)       (2,749,000)      (2,793,000)
                                                                     -----------   ----------------   -------------
                Excess funds available for principal
                     payments, cash distributions to
                     shareholders and repurchase of stock            $1,165,000        $1,229,000         $521,000
                                                                     ===========   ================   =============
</TABLE>

     The Company believes that its rental revenues and interest and other income
will be  sufficient  over at least the next twelve  months to meet the Company's
operating  expenses,  capital  improvements  and  distributions to shareholders.
During 1995, the Company's  property operator commenced a program to enhance the
visual  appearance  of  the  mini-warehouse  facilities  operated  by  it.  Such
enhancements include new signs,  exterior color schemes, and improvements to the
rental  offices.   The  vast  majority  of  the  costs   associated  with  these
enhancements were incurred in 1995 and 1996.

     FFO is defined by the Company, consistent with the definition of FFO by the
National  Association of Real Estate Investment  Trusts (NAREIT),  as net income
(loss) (computed in accordance with generally  accepted  accounting  principles)
before depreciation and extraordinary or non-recurring  items. FFO for the years
ended December 31, 1997 and 1996 was $4,678,000  and  $4,305,000,  respectively.
FFO is  presented  because  the  Company,  as well as  many  industry  analysts,
consider FFO to be one measure of the performance of the Company, i.e., one that
generally  reflects changes in the Company's net operating income.  FFO does not
take  into  consideration  scheduled  principal  payments  on debt  and  capital
improvements. Accordingly, FFO is not necessarily a substitute for the Company's
cash flow or net income,  as a measure of the  Company's  liquidity or operating
performance or ability to pay distributions.  Furthermore, the NAREIT definition
of FFO does not  address  the  treatment  of certain  items and all REITs do not
treat items the same way in computing FFO. Accordingly, comparisons of levels of
FFO among REITs may not necessarily be meaningful.

     Funds from operations is computed as follows:

<TABLE>
<CAPTION>

                                                               Year ended December 31,
                                           -------------------------------------------------------
                                                 1997                 1996                 1995
                                           -------------        -------------        -------------

          <S>                              <C>                  <C>                  <C>          
          Net income                       $   3,480,000        $   3,155,000        $   2,796,000
          Environmental cost                           -                    -              106,000
          Depreciation                         1,198,000            1,150,000            1,105,000
                                           -------------        -------------        -------------
          Funds from operation             $   4,678,000        $   4,305,000        $   4,007,000
                                           =============        =============        =============
</TABLE>

     During the second  quarter of 1995, the Company  borrowed  $145,000 from an
affiliate for working  capital  purposes.  The advance,  which was repaid in May
1995, bore interest at the prime rate plus .25%.  Interest expense of $1,000 was
charged to income in 1995 with respect to this advance.

     The Company believes its geographically diverse portfolio has resulted in a
relatively stable and predictable investment portfolio.

     On November 12, 1997, the Company's  Board of Directors  declared a regular
quarterly  distribution  per  share of $0.34  payable  on  January  15,  1998 to
shareholders of record on December 31, 1997.


                                       15
<PAGE>
DISTRIBUTIONS
- -------------

     The  Company  has  established  a  conservative  distribution  policy.  The
aggregate  amount of dividends paid or accrued to the  shareholders in each year
since inception of the Company were as follows:

                       Series A             Series B               Total
                    -----------           ----------          -----------
    1984               $858,000              $75,000             $933,000
    1985              1,061,000               92,000            1,153,000
    1986              1,273,000              111,000            1,384,000
    1987              1,751,000              152,000            1,903,000
    1988              2,307,000              201,000            2,508,000
    1989              2,758,000              240,000            2,998,000
    1990              2,865,000              249,000            3,114,000
    1991              3,204,000              282,000            3,486,000
    1992              2,738,000              251,000            2,989,000
    1993              2,700,000              251,000            2,951,000
    1994              2,612,000              251,000            2,863,000
    1995              2,530,000              252,000            2,782,000
    1996              2,484,000              252,000            2,736,000
    1997              2,474,000              252,000            2,726,000
                    -----------           ----------          -----------
   Total            $31,615,000           $2,911,000          $34,526,000
                    ===========           ==========          ===========

     The  Convertible  Series  B shares  and  Convertible  Series C shares  will
convert  automatically  into  Series A shares on a  share-for-share  basis  (the
"Conversion")  when  (A) the  sum of (1)  all  cumulative  dividends  and  other
distributions  from  all  sources  paid  with  respect  to the  Series  A shares
(including liquidating distributions,  but not including payments made to redeem
such  stock  other  than in  liquidation)  and (2)  the  cumulative  Partnership
distributions  from all sources with respect to all units equals (B) the product
of $20  multiplied  by the  number of the then  outstanding  "Original  Series A
shares". The term "Original Series A shares" means the Series A shares issued in
the Reorganization. Through December 31, 1997, the Company has made and declared
cumulative cash  distributions of approximately  $31,615,000 with respect to the
Series A shares. Accordingly, assuming no repurchases or redemptions of Series A
shares  after  December  31,  1997,  Conversion  will occur when  $4,783,000  in
additional  distributions  with  respect to the Series A shares  have been made.

REIT DISTRIBUTION REQUIREMENT
- -----------------------------

     The  Company  has  elected  and  intends to continue to qualify as REIT for
Federal  income tax  purposes.  As a REIT,  the Company  must meet,  among other
tests, sources of income,  share ownership,  and certain asset tests. As a REIT,
the  Company  is not  taxed  on that  portion  of its  taxable  income  which is
distributed to its shareholders provided that at least 95% of its taxable income
is so distributed to its shareholders  prior to filing the Company's tax return.
Under certain  circumstances,  the Company can rectify a failure to meet the 95%
distribution  test by  making  distributions  after  the  close of a  particular
taxable year and  attributing  those  distributions  to the prior year's taxable
income. The Company has satisfied the REIT distribution  requirement for 1997 by
attributing distributions in 1998 to the prior year's taxable income. The extent
to which the Company  will be required to attribute  distributions  to the prior
year will depend on the Company's  operating  results  (taxable  income) and the
level of  distributions  as  determined  by the  Board of  Directors.  The basic
difference  between book income and taxable income is depreciation  expense.  In
1997, the Company's Federal tax depreciation was $1,330,000.

     The Company's  Board of Directors has authorized the Company to purchase up
to 400,000 shares of Series A common stock. As of December 31, 1997, the Company
had purchased and retired 301,275 shares of Series A common stock.


                                       16
<PAGE>

YEAR 2000 SYSTEM ISSUES
- -----------------------

     PSI has  completed  an initial  assessment  of its  computer  systems.  The
majority of the computer  programs were  installed or upgraded over the past few
years and are Year 2000 compliant.  Some of the older computer programs utilized
by PSI were written without regard for Year 2000 issues and could cause a system
failure or miscalculations with possible disruption of operations. Each of these
computer  programs and systems has been  evaluated to be upgraded or replaced as
part of PSI Year 2000 project.

     The cost of the Year 2000 project will be allocated to all  companies  that
use the PSI  computer  systems.  The  cost of the  Year  2000  project  which is
expected to be  allocated to the Company is less than  $40,000.  The cost of new
software will be capitalized  and the cost of  maintenance  to existing  systems
will be expensed as incurred.

     The project is expected to be completed by March 31, 1999 which is prior to
any   anticipated   impact  on  operating   systems.   PSI  believes  that  with
modifications to existing software and, in some instances, the conversion to new
software,  the Year 2000 issue will not pose significant  operational  problems.
However,  if such  modifications are not made, or are not completed timely,  the
Year 2000 issue could have a material impact on the operations of the Company.

     The  costs  of the  project  and the  date on which  PSI  believes  it will
complete the Year 2000  modifications  are based on management's best estimates,
which were derived utilizing numerous assumptions of future events. There can be
no guarantee  that these  estimates  will be achieved and actual  results  could
differ materially from those anticipated.


Proposed Merger
- ---------------

     See "Item 1. Business - Proposed  Merger" for a  description  of a proposed
merger involving the Company.

ITEM 8.   FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.
          --------------------------------------------

     Company's financial statements are included elsewhere herein.  Reference is
made to the Index to Financial  Statements and Financial  Statement  Schedule in
Item 14(a).

ITEM 9.   CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND 
          FINANCIAL DISCLOSURE.
          ----------------------------------------------------------------

     None.

                                    PART III.

ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY.
          ------------------------------------------------

     Set  forth  below  is  information  regarding  the  current  directors  and
executive officers of the Company:


              Name                                     Positions
- ------------------------     --------------------------------------------------
 B. Wayne Hughes             Chairman of the Board and Chief Executive Officer

 Harvey Lenkin               President

 David P. Singelyn           Vice President and Chief Financial Officer

 David Goldberg              Vice President and General Counsel

 A. Timothy Scott            Vice President and Tax Counsel

 Obren B. Gerich             Vice President and Secretary

 Vern O. Curtis              Director

 Jack D. Steele              Director

                                       17
<PAGE>

     B. Wayne Hughes, age 64, has been Chairman of the Board and Chief Executive
Officer  of the  Company  since its  inception  in 1990.  Mr.  Hughes has been a
director of PSI,  the  Company's  mini-warehouse  property  operator,  since its
organization in 1980 and was President and Co-Chief  Executive Officer from 1980
until  November  1991  when he  became  Chairman  of the  Board  and sole  Chief
Executive Officer. Mr. Hughes has been Chairman of the Board and Chief Executive
Officer  since  1990  of  Public  Storage  Properties  XX,  Inc.  ("PSP20"),  an
affiliated  REIT.  From 1989-90  until the  respective  dates of merger,  he was
Chairman of the Board and Chief Executive  Officer of Public Storage  Properties
VI, Inc., Public Storage  Properties VII, Inc., Public Storage  Properties VIII,
Inc.,  Public Storage  Properties IX, Inc.,  Public Storage  Properties X, Inc.,
Public  Storage  Properties  XII,  Inc.,  Public  Storage  Properties  XIV, Inc.
("PSP14"),   Public  Storage  Properties  XV,  Inc.  ("PSP15"),  Public  Storage
Properties XVI, Inc. ("PSP16"),  Public Storage Properties XVII, Inc. ("PSP17"),
Public Storage Properties XVIII, Inc. ("PSP18"),  Public Storage Properties XIX,
Inc.  ("PSP19"),  PS Business  Parks,  Inc.,  Partners  Preferred  Yield,  Inc.,
Partners  Preferred  Yield II,  Inc.,  Partners  Preferred  Yield III,  Inc. and
Storage  Properties,  Inc.  ("SPI")  (collectively,  the "Merged  Public Storage
REITs"),  affiliated REITs that were merged into PSI between  September 1994 and
June 1997.  He has been active in the real estate  investment  field for over 25
years.

     Harvey  Lenkin,  age 61,  has  been  President  of the  Company  since  its
inception in 1990.  Mr.  Lenkin has been employed by PSI for 20 years and became
President and a director of PSI in November 1991. He has been President of PSP20
since 1990.  Mr. Lenkin was  President of the Merged  Public  Storage REITs from
1989-90 until the respective dates of merger and was also a director of SPI from
1989 until  June 1996.  He is a director  of the  National  Association  of Real
Estate Investment Trusts (NAREIT).

     David P. Singelyn, age 36, a certified public accountant, was Controller of
the Company from November 1995 until December 1996 when he became Vice President
and Chief  Financial  Officer.  Mr. Singelyn has been employed by PSI since 1989
and  became  Vice  President  and  Treasurer  of PSI in  November  1995.  He was
Controller of PSP20 from  November 1995 until  December 1996 when he became Vice
President and Chief Financial  Officer.  He was Vice President and Controller of
SPI from 1991 until June 1996. From 1987 to 1989, Mr. Singelyn was Controller of
Winchell's Donut Houses, L.P.

     David  Goldberg,  age 48, became Vice President and General  Counsel of the
Company in December 1995. Mr.  Goldberg became Senior Vice President and General
Counsel of PSI in November 1995. He joined PSI's legal staff in June 1991.  From
December  1982  until  May  1991,  he was a  partner  in the law firm of Sachs &
Phelps, then counsel to PSI.

     A. Timothy  Scott,  age 46,  became Vice  President  and Tax Counsel of the
Company in November 1996. Mr. Scott became Senior Vice President and Tax Counsel
of PSI in November 1996.  From June 1991 until joining PSI, he practiced tax law
as a shareholder of the law firm of Heller,  Ehrman, White & McAuliffe,  counsel
to PSI. Prior to June 1991, his  professional  corporation  was a partner in the
law firm of Sachs & Phelps, then counsel to PSI.

     Obren B.  Gerich,  age 59, a  certified  public  accountant,  has been Vice
President and Secretary of the Company since its inception in 1990 and was Chief
Financial Officer until November 1995. He has been a Vice President of PSI since
1980,  became  Senior  Vice  President  of PSI in  November  1995 and was  Chief
Financial Officer of PSI until November 1991. Mr. Gerich has been Vice President
and Secretary of PSP20 since 1990 and was Chief Financial Officer until November
1995. He was Vice  President  and  Secretary of the Merged Public  Storage REITs
from 1989-90 until the respective dates of merger.

     Vern O.  Curtis,  age 63,  Chairman  of the Audit  Committee,  is a private
investor.  Mr.  Curtis has been a director of the Company since its inception in
1990.  Mr.  Curtis has also been a director of PSP20 since 1990.  Mr.  Curtis is
also a director of the Pimco Funds, Pimco Commercial  Mortgage Securities Trust,
Inc. and Fresh Choice, Inc. He was a director of the Merged Public Storage REITs
from  1989-90  until the  respective  dates of  merger.  Mr.  Curtis was Dean of
Business  School of Chapman  College from 1988 to 1990 and  President  and Chief
Executive Officer of Denny's, Inc. from 1980 to 1987.

     Jack D.  Steele,  age 74,  a  member  of the  Audit  Committee,  has been a
director of the Company since its inception in 1990.  Mr. Steele has also been a
director  of  PSP20  since  1990.  He is also a  director  of M.C.  Gill and CRG
Compensation  Resource  Group.  Mr.  Steele is a business  consultant.  He was a
director of the Merged Public  Storage  REITs from 1989-90 until the  respective
dates of  merger.  Mr.  Steele  was  Chairman  - Board  Services  of  Korn/Ferry
International  from 1986 to 1988 and Dean of School of Business and Professor at
the University of Southern California from 1975 to 1986.


                                       18
<PAGE>
ITEM 11.  EXECUTIVE COMPENSATION.
          ----------------------

Compensation of Directors
- -------------------------

     Each of the  Company's  directors,  other than B. Wayne  Hughes,  currently
receives director's fees of $2,000 per year plus $200 for each meeting attended.
In addition,  each of the members of the Audit Committee  receives $100 for each
meeting  of the  Audit  Committee  attended.  The  policy of the  Company  is to
reimburse directors for reasonable expenses.

Compensation of Executive Officers
- ----------------------------------

     Set forth below is certain  compensation  relating to B. Wayne Hughes,  the
Company's current Chief Executive Officer.  The Company has no executive officer
who earned $100,000 or more in 1997 for services rendered to the Company.

                           Summary Compensation Table

                                              Annual Compensation

    Name and Principal Position            Year                Salary
- --------------------------------        ------------       ------------
 B. Wayne Hughes                            1997               $1,000

 Chairman of the Board and                  1996                1,000

 Chief Executive Officer                    1995                1,000

           COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

     The Company does not have a compensation committee. Mr. Hughes, the current
Chief  Executive  Officer of the  Company,  is a current  member of the Board of
Directors.  Mr.  Hughes is a director and the chief  executive  officer of PSP20
(and  during part of 1997,  Mr.  Hughes was a director  and the chief  executive
officer of PSP14,  PSP15, PSP16, PSP17, PSP18 and PSP19). Mr. Hughes also is the
chief  executive  officer  and a director of PSI, of which  Harvey  Lenkin,  the
current President of the Company,  is the president and a director.  Neither PSI
nor  PSP20 has (nor did  PSP14,  PSP15,  PSP16,  PSP17,  PSP18 or PSP19  have) a
compensation committee.

CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
- ----------------------------------------------

     MANAGEMENT AGREEMENTS. The Company currently has management agreements with
PSI and AOPPLP. Under the management  agreements,  the Company pays PSI a fee of
6% of the gross revenues of the Company's mini-warehouses ($370,000 in 1997) and
pays  AOPPLP  a fee of 5% of the  gross  revenues  of the  Company's  commercial
properties  ($70,000  in  1997).  The  Company  believes  that the  terms of the
management agreements are as favorable as would be obtained from unrelated third
parties.

     PROPOSED MERGER AND EXCHANGE.  The Company and AOPP have agreed, subject to
certain conditions,  to merge, pursuant to an Amended and Restated Agreement and
Plan of Reorganization by and among PSP11, AOPP and PSI dated as of December 17,
1997.  AOPP,  an  affiliate  of PSI,  owns and  operates  commercial  properties
directly and through AOPPLP.  Upon the merger of AOPP into the Company,  each of
the 1,819,937 outstanding shares of the Company's Common Stock Series A ("Series
A Shares")  (other than shares held by holders of the Company's  Series A Shares
("Series A Shareholders") who have properly  exercised  dissenters' rights under
California  law)  would  continue  to be owned by the Series A  Shareholders  or
converted  into the right to receive cash as follows:  (i) with respect to up to
20% of the outstanding  Series A Shares,  $20.50 in cash and (ii) the balance of
the  outstanding  Series A Shares  would  continue  to be owned by the  Series A
Shareholders. In the merger, (i) each share of the Company's Common Stock Series
B ("Series B Shares")  and each share of the  Company's  Common  Stock  Series C
("Series C Shares") would be converted into 0.8641 Series A Shares (or up to 20%
in cash) and (ii) each share of AOPP's  capital  stock would be  converted  into
1.18  Series A Shares (or up to 20% in cash).  The Series A Shares are listed on
the  American  Stock  Exchange  and the  Series B Shares and Series C Shares are
owned by PSI and B. Wayne  Hughes.  There are 707,071  outstanding  Series B and
Series C Shares (of which 47,824  Series C Shares will be canceled  prior to the
  
                                     19
<PAGE>

merger) and approximately  10,000,000  outstanding  shares of AOPP common stock.
After the  merger,  the Company  would have  approximately  14,200,000  Series A
Shares (assuming no cash elections),  with approximately an additional 6,222,000
shares reserved for issuance upon conversion of partnership  interests of AOPPLP
into  Series  A  Shares.   After  the  merger,  the  Series  A  Shares  will  be
reconstituted as common stock.  Concurrently  with the merger,  the Company will
exchange 13  mini-warehouses  for 11  commercial  properties  owned by PSI.  The
merger is  conditioned  on approval by the  Company's  shareholders.  PSI and B.
Wayne  Hughes  own  223,712  Series A Shares and  707,071  Series B and Series C
Shares and the Company's current directors and executive officers,  excluding B.
Wayne Hughes,  own an additional 800 Series A Shares. In addition,  (i) PSI owns
3,492,423.93 shares of AOPP common stock and PSI and its affiliated partnerships
own  6,190,979  units of  partnership  interest  of AOPPLP and (ii) the  current
directors  and  executive  officers  own or have  options to purchase a total of
28,697 shares of AOPP common stock  (outstanding  options to purchase  shares of
AOPP common stock will be assumed by the Company in the merger and  converted to
options to purchase  shares of the  Company's  common stock on the basis of 1.18
shares of the Company's common stock for each share of AOPP common stock).

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.
          ---------------------------------------------------------------

Security Ownership of Certain Beneficial Owners
- -----------------------------------------------

     Information  regarding  beneficial  ownership  of shares  of the  Company's
common  stock by B.  Wayne  Hughes  (a  beneficial  owner of more than 5% of the
Company's  combined  outstanding  shares of Common  Stock Series A, Common Stock
Series B and Common Stock Series C) is set forth in the second table below.  The
following  table sets forth  information  with  respect to the only other person
known to the Company to be the beneficial owner of more than 5% of the Company's
combined  outstanding shares of Common Stock Series A, Common Stock Series B and
Common Stock Series C (or Common Stock Series A):
<TABLE>
<CAPTION>
                                        Shares of Common Stock,
                                            $.01 Par Value,
                                        Beneficially Owned as of
                                           March 9, 1998 (1)
                                        -------------------------
           Name and Address             Number of Shares (2)(3)           Percent
- -----------------------------------     ------------------------      ----------------
<S>                                        <C>                        <C>  
  PSI                                       A:    223,712(4)           A:    12.3%
  701 Western Avenue                        B:    184,453(4)           B:   100.0%
  Glendale, California 91201-2397           C:    522,618(4)           C:   100.0%
                                        ------------------------      ----------------
                                                  930,783(4)(5)              36.8%
</TABLE>
- ------------------------------------
(Footnotes  to the table  are set forth  following  the  table  under  "Security
Ownership of Management" below).

Security Ownership of Management
- --------------------------------

     The  following  table  sets  forth  information   concerning  the  security
ownership of each director of the Company  (including B. Wayne Hughes,  the only
executive  officer  named  under  Item 11) and of all  directors  and  executive
officers of the Company as a group:


                                       20
<PAGE>
<TABLE>
<CAPTION>



                                                  Shares of Common Stock,
                                                      $.01 Par Value,
                                                  Beneficially Owned a of
                                                     March 9, 1998 (1)
                                                  ------------------------                         
                           Name                   Number of Shares (2)(3)           Percent
          -----------------------------------     ------------------------      ----------------

           <S>                                     <C>                          <C>
            B. Wayne Hughes                        A:       424.0(6)             A:      (7)
                                                   B:    36,890.6(6)             B:      20.0%
                                                   C:   104,523.6(6)             C:      20.0%
          -----------------------------------     ------------------------      ----------------
                                                        141,838.2(5)(6)                   5.6%

            Vern O. Curtis                         A:       500.0                        (7)

            Jack D. Steele                         A:       100.0(8)                     (7)

            All Directors and Executive            A:     1,224.0(6)(8)(9)       A:      (7)
              Officers as a Group                  B:    36,890.6(6)             B:      20.0%
              (eight persons)                      C:   104,523.6(6)             C:      20.0%
          -----------------------------------     ------------------------      ----------------
                                                        142,638.2(5)(6)(8)(9)             5.6%
</TABLE>
- ------------------------------------
(1)    Except  as  otherwise  indicated  and  subject  to  applicable  community
       property and similar statutes, the persons listed as beneficial owners of
       the shares  have sole  voting and  investment  power with  respect to the
       shares.

(2)    Capital letters "A", "B" and "C" denote share information with respect to
       Common  Stock  Series A, Common Stock Series B and Common Stock Series C,
       respectively.

(3)    The Company's  current Articles of Incorporation  provide that the Common
       Stock Series B and Common Stock Series C will convert  automatically into
       Common Stock Series A on a share-for-share  basis when (A) the sum of (1)
       all cumulative  dividends and other  distributions  from all sources paid
       with  respect  to  the  Common  Stock  Series  A  (including  liquidating
       distributions, but not including payments made to redeem such stock other
       than in  liquidation)  and (2) the cumulative  Partnership  distributions
       from all sources with respect to all  Partnership  units  (including  the
       general  partners' 1% interest)  equals (B) the product of $20 multiplied
       by the number of then  outstanding  "Original  Series A Shares." The term
       "Original  Series A Shares"  means the  shares of Common  Stock  Series A
       issued in the Reorganization.

(4)    Includes (i) 223,288 shares of Common Stock Series A, 147,562.4 shares of
       Common Stock Series B and 418,094.4 shares of Common Stock Series C owned
       by PSI as to which PSI has sole voting and dispositive power and (ii) 424
       shares of Common Stock Series A, 36,890.6 shares of Common Stock Series B
       and 104,523.6  shares of Common Stock Series C which PSI has an option to
       acquire  (together with other securities) from B. Wayne Hughes as trustee
       of the B.W. Hughes Living Trust and as to which PSI has sole voting power
       (pursuant to an irrevocable proxy) and no dispositive power.

(5)    Includes  Common  Stock  Series A, Common Stock Series B and Common Stock
       Series C.

(6)    Includes 424 shares of Common Stock Series A,  36,890.6  shares of Common
       Stock Series B and 104,523.6  shares of Common Stock Series C owned by B.
       Wayne Hughes as trustee of the B.W.  Hughes  Living Trust as to which Mr.
       Hughes has sole dispositive  power and no voting power; PSI has an option
       to acquire  these  shares and an  irrevocable  proxy to vote these shares
       (see footnote (4) above).

(7)    Less than 0.1%.
                                       21

<PAGE>

(8)    Shares held by a bank custodian of a simplified  employee pension for the
       benefit of Mr. Steele.

(9)    Includes  shares  held  of  record  or  beneficially  by  members  of the
       immediate family of officers of the Company and shares held by custodians
       of  individual  retirement  accounts  for the  benefit of officers of the
       Company (or members of their immediate families).

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.
          ------------------------------------------------

     See "Compensation Committee Interlocks and Insider Participation -- Certain
Relationships and Related Transactions" under Item 11.

                                    PART IV.

ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K.
          ----------------------------------------------------------------

         (a)  List of Documents filed as part of the Report.
              1. Financial Statements:  See Index to Financial Statements 
                 and Financial Statement Schedule.
              2. Financial  Statement  Schedules:  See  Index  to  Financial  
                 Statements  and  Financial  Statement Schedule.
              3. Exhibits:  See Exhibit Index contained herein.

         (b)  Reports on Form 8-K filed  during the last quarter of
                 the period ended December 31, 1997: 
                 Form 8-K/As dated October 21, 1997 and December 17, 1997 
                 (filed January 8, 1998) were filed  relating to the proposed  
                 merger of AOPP into the Company.

         (c)  Exhibits:
                       See Exhibit Index contained herein.
                                       22

<PAGE>
                                 SIGNATURES

     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its behalf by the undersigned, thereto duly authorized.

                                         PUBLIC STORAGE PROPERTIES XI, INC.

Dated: March 13, 1998                    By:/s/ Harvey Lenkin
                                            -------------------------
                                            Harvey Lenkin, President

     Pursuant to the  requirements of the Securities  Exchange Act of 1934, this
report  has  been  signed  below  by the  following  persons  on  behalf  of the
Registrant in the capacities and on the dates indicated.
<TABLE>
<CAPTION>

                   Signature                                      Capacity                                 Date
<S>                                               <C>                                                        <C>
  /s/ B. Wayne Hughes                           Chairman of the Board, Chief Executive                     March 13, 1998
  -------------------------                       Officer and Director
  B. Wayne Hughes                                 (Principal Executive Officer)


  /s/ Vern O. Curtis                            Director                                                   March 13, 1998
  -------------------------
  Vern O. Curtis


  /s/ Jack D. Steele                            Director                                                   March 13, 1998
  -------------------------
  Jack D. Steele


  /s/ David P. Singelyn                         Vice President and Chief Financial Officer                 March 13, 1998
  ---------------------                          (Principal Financial Officer and
  David P. Singelyn                               Principal Accounting Officer)
</TABLE>

                                       23
<PAGE>
                       PUBLIC STORAGE PROPERTIES XI, INC.

                                    INDEX TO
                              FINANCIAL STATEMENTS
                                       AND
                          FINANCIAL STATEMENT SCHEDULE
                                  (Item 14 (a))


<TABLE>
<CAPTION>

                                                                                                     Page
                                                                                                  References
                                                                                                  ----------

<S>                                                                                                <C>
Report of Independent Auditors                                                                      F-1

Financial Statements and Schedule:

     Balance Sheets as of December 31, 1997 and 1996                                                F-2

     For each of the three years in the period ended December 31, 1997:

         Statements of Income                                                                       F-3

         Statements of Shareholders' Equity                                                         F-4

         Statements of Cash Flows                                                                   F-5

     Notes to Financial Statements                                                               F-6 - F-10

Schedule for the years ended December 31, 1997, 1996 and 1995:

         III  Real Estate and Accumulated Depreciation                                           F-11 - F-12
</TABLE>


     All other schedules have been omitted since the required information is not
present or not  present  in amounts  sufficient  to  require  submission  of the
schedule,  or because the  information  required  is  included in the  financial
statements or the notes thereto.


<PAGE>


                         Report of Independent Auditors





The Board of Directors and Shareholders
Public Storage Properties XI, Inc.


We have audited the accompanying balance sheets of Public Storage Properties XI,
Inc. as of December  31, 1997 and 1996,  and the related  statements  of income,
shareholders'  equity and cash  flows for each of the three  years in the period
ended  December 31, 1997.  Our audits also  included the schedule  listed in the
index  at  item  14(a).   These  financial   statements  and  schedule  are  the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these financial statements and schedule based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the financial position of Public Storage Properties XI,
Inc. at December 31, 1997 and 1996,  and the results of its  operations  and its
cash flows for each of the three years in the period ended December 31, 1997, in
conformity with generally accepted accounting principles.  Also, in our opinion,
the related  financial  statement  schedule,  when considered in relation to the
basic  financial  statements  taken as a whole,  presents fairly in all material
respects the information set forth therein.








                                                   /s/   ERNST & YOUNG LLP


February 18, 1998
Los Angeles, California

                                       F-1
<PAGE>
<TABLE>
<CAPTION>
                       PUBLIC STORAGE PROPERTIES XI, INC.
                                 BALANCE SHEETS
                           December 31, 1997 and 1996

                                                                                       1997                    1996
                                                                                ---------------       ---------------

                                     ASSETS


<S>                                                                             <C>                   <C>            
Cash and cash equivalents                                                       $     2,455,000       $     1,290,000
Rent and other receivables                                                               37,000                53,000
Prepaid expenses                                                                        417,000               142,000

Real estate facilities at cost:
   Building, land improvements and equipment                                         27,017,000            26,526,000
   Land                                                                              12,118,000            12,118,000
                                                                                ---------------       ---------------
                                                                                     39,135,000            38,644,000

Less accumulated depreciation                                                       (13,198,000)          (12,000,000)
                                                                                ---------------       ---------------
                                                                                     25,937,000            26,644,000
                                                                                ---------------       ---------------
Total assets                                                                    $    28,846,000       $    28,129,000
                                                                                ===============       ===============


                                          LIABILITIES AND SHAREHOLDERS' EQUITY



Accounts payable                                                                $       615,000       $       633,000
Dividends payable                                                                       681,000               681,000
Advance payments from renters                                                           179,000               198,000

Shareholders' equity:
   Series A common, $.01 par value,
     2,828,989 shares authorized,
     1,819,937 shares issued and
     outstanding                                                                         18,000                18,000
   Convertible Series B common, $.01 par
     value, 184,453 shares authorized,
     issued and outstanding                                                               2,000                 2,000
   Convertible Series C common, $.01 par
     value, 522,618 shares authorized,
     issued and outstanding                                                               5,000                 5,000

   Paid-in-capital                                                                   32,421,000            32,421,000
   Cumulative net income                                                             29,451,000            25,971,000
   Cumulative distributions                                                         (34,526,000)          (31,800,000)
                                                                                ---------------       ---------------
   Total shareholders' equity                                                        27,371,000            26,617,000
                                                                                ---------------       ---------------
Total liabilities and shareholders' equity                                      $    28,846,000       $    28,129,000
                                                                                ===============       ===============

                             See accompanying notes.
                                       F-2
</TABLE>


<PAGE>
<TABLE>
<CAPTION>


                       PUBLIC STORAGE PROPERTIES XI, INC.
                              STATEMENTS OF INCOME
                       For each of the three years in the
                         period ended December 31, 1997

                                                                       1997                  1996                  1995
                                                               --------------        --------------        --------------

REVENUES:
<S>                                                            <C>                   <C>                   <C>           
Rental income                                                  $    7,561,000        $    7,220,000        $    6,859,000
Interest income                                                        82,000                33,000                19,000
                                                               --------------        --------------        --------------
                                                                    7,643,000             7,253,000             6,878,000
                                                               --------------        --------------        --------------
COSTS AND EXPENSES:

Cost of operations                                                  2,324,000             2,334,000             2,265,000
Management fees paid to affiliates                                    440,000               394,000               400,000
Depreciation                                                        1,198,000             1,150,000             1,105,000
Administrative                                                        201,000               217,000               205,000
Environmental cost                                                      -                     -                   106,000
Interest expense                                                        -                     3,000                 1,000
                                                               --------------        --------------        --------------

                                                                    4,163,000             4,098,000             4,082,000
                                                               --------------        --------------        --------------

NET INCOME                                                     $    3,480,000        $    3,155,000        $    2,796,000
                                                               ==============        ==============        ==============

Basic earnings per share-Series A                              $        1.77         $        1.59         $        1.37
                                                               ==============        ==============        ==============

Diluted earnings per share-Series A                            $        1.38         $        1.24         $        1.09
                                                               ==============        ==============        ==============

Dividends declared per share:
   Series A                                                    $        1.36         $        1.36         $        1.36
                                                               ==============        ==============        ==============
   Series B                                                    $        1.36         $        1.36         $        1.36
                                                               ==============        ==============        ==============

Weighted average Common shares outstanding:
   Basic- Series A                                                  1,819,937             1,830,845             1,863,470
                                                               ==============        ==============        ==============
   Diluted- Series A                                                2,527,008             2,537,916             2,570,541
                                                               ==============        ==============        ==============


                             See accompanying notes.
                                       F-3

</TABLE>
<PAGE>
<TABLE>
<CAPTION>

                       PUBLIC STORAGE PROPERTIES XI, INC.
                       STATEMENTS OF SHAREHOLDERS' EQUITY
                 For each of the three years in the period ended
                                December 31, 1997


                                                                      Convertible                 Convertible        
                                           Series A                    Series B                    Series C          
                                     Shares        Amount        Shares        Amount        Shares        Amount    
                                    ---------      --------      -------       ------         -------       ------   
<S>                                 <C>             <C>          <C>           <C>            <C>           <C>      
Balances at December 31, 1994       1,888,537       $19,000      184,453       $2,000         522,618       $5,000   

Net income                                                                                                           
Repurchase of shares                  (32,200)            -                                                          

Cash distributions declared:
   $1.36 per share - Series A                                                                                        
   $1.36 per share - Series B                                                                                        
                                    ---------      --------      -------       ------         -------       ------   


Balances at December 31, 1995       1,856,337        19,000      184,453        2,000         522,618        5,000   

Net income                                                                                                           
Repurchase of shares                  (36,400)       (1,000)                                                         

Cash distributions declared:
   $1.36 per share - Series A                                                                                        
   $1.36 per share - Series B                                                                                        
                                    ---------      --------      -------       ------         -------       ------   

Balances at December 31, 1996       1,819,937        18,000      184,453        2,000         522,618        5,000   

Net income                                                                                                           
Repurchase of shares

Cash distributions declared:
   $1.36 per share - Series A                                                                                        
   $1.36 per share - Series B                                                                                        
                                    ---------      --------      -------       ------         -------       ------   

Balances at December 31, 1997       1,819,937       $18,000      184,453       $2,000         522,618       $5,000   
                                    =========       =======      =======       ======         =======       ======   


</TABLE>
<TABLE>
<CAPTION>

                       PUBLIC STORAGE PROPERTIES XI, INC.
                       STATEMENTS OF SHAREHOLDERS' EQUITY
                 For each of the three years in the period ended
                                December 31, 1997


                                                        Cumulative                         Total
                                          Paid-in           net         Cumulative     shareholders'
                                          Capital         income       distributions      equity
                                      -----------     -----------     ------------     -----------
<S>                                   <C>             <C>             <C>              <C>        
Balances at December 31, 1994         $33,634,000     $20,020,000     $(26,282,000)    $27,398,000

Net income                                              2,796,000                        2,796,000
Repurchase of shares                     (529,000)                                        (529,000)

Cash distributions declared:
   $1.36 per share - Series A                                          (2,530,000)      (2,530,000)
   $1.36 per share - Series B                                            (252,000)        (252,000)
                                      -----------     -----------     ------------     -----------


Balances at December 31, 1995          33,105,000      22,816,000     (29,064,000)      26,883,000

Net income                                              3,155,000                        3,155,000
Repurchase of shares                     (684,000)                                        (685,000)

Cash distributions declared:
   $1.36 per share - Series A                                          (2,484,000)      (2,484,000)
   $1.36 per share - Series B                                            (252,000)        (252,000)
                                      -----------     -----------     ------------     -----------

Balances at December 31, 1996          32,421,000      25,971,000     (31,800,000)      26,617,000

Net income                                              3,480,000                        3,480,000
Repurchase of shares

Cash distributions declared:
   $1.36 per share - Series A                                          (2,474,000)      (2,474,000)
   $1.36 per share - Series B                                            (252,000)        (252,000)
                                      -----------     -----------     ------------     -----------

Balances at December 31, 1997         $32,421,000     $29,451,000     $(34,526,000)    $27,371,000
                                      ===========     ===========     ============     ===========


</TABLE>
                             See accompanying notes.
                                       F-4
<PAGE>
<TABLE>
<CAPTION>
                       PUBLIC STORAGE PROPERTIES XI, INC.
                            STATEMENTS OF CASH FLOWS
                       For each of the three years in the
                         period ended December 31, 1997

                                                                     1997                  1996                  1995
                                                               -------------         -------------         -------------
Cash flows from operating activities:
<S>                                                            <C>                   <C>                   <C>          
   Net income                                                  $   3,480,000         $   3,155,000         $   2,796,000

   Adjustments to reconcile net
       income to net cash provided
       by operating activities:

     Depreciation                                                  1,198,000             1,150,000             1,105,000
     Decrease (increase) in rent and other receivables                16,000                34,000               (53,000)
     Increase in prepaid expenses                                   (275,000)              (79,000)               (4,000)
     Amortization (payment) of prepaid management fees                -                    205,000              (205,000)
     (Decrease) increase in accounts payable                         (18,000)               24,000               151,000
     Decrease in advance payments from renters                       (19,000)               (4,000)               (4,000)
                                                               -------------         -------------         -------------

       Total adjustments                                             902,000             1,330,000               990,000
                                                               -------------         -------------         -------------

       Net cash provided by operating activities                   4,382,000             4,485,000             3,786,000
                                                               -------------         -------------         -------------

Cash flows from investing activities:

     Additions to real estate facilities                            (491,000)             (507,000)             (472,000)
                                                               -------------         -------------         -------------

       Net cash used in  investing activities                       (491,000)             (507,000)             (472,000)
                                                               -------------         -------------         -------------

Cash flows from financing activities:

     Distributions paid to shareholders                           (2,726,000)           (2,749,000)           (2,793,000)
     Advances from affiliate                                          -                     -                    145,000
     Repayment of advances from affiliate                             -                     -                   (145,000)
     Borrowing on credit facility                                     -                    250,000                -
     Repayment of borrowing on credit facility                        -                   (250,000)               -
     Purchase of Company Series A common stock                        -                   (685,000)             (529,000)
                                                               -------------         -------------         -------------

       Net cash used in financing activities                      (2,726,000)           (3,434,000)           (3,322,000)
                                                               -------------         -------------         -------------

Net increase (decrease) in cash and cash equivalents              1,165,000               544,000                 (8,000)

Cash and cash equivalents at the beginning of the year             1,290,000               746,000               754,000
                                                               -------------         -------------         -------------

Cash and cash equivalents at the end of the year               $   2,455,000         $   1,290,000         $     746,000
                                                               =============         =============         =============

</TABLE>
                             See accompanying notes.
                                       F-5

<PAGE>

                       PUBLIC STORAGE PROPERTIES XI, INC.
                          NOTES TO FINANCIAL STATEMENTS
                                December 31, 1997

1.        DESCRIPTION OF BUSINESS

               Public  Storage   Properties  XI,  Inc.  (the   "Company")  is  a
          California  corporation  which has elected to qualify as a real estate
          investment trust ("REIT") for Federal income tax purposes. The Company
          succeeded to the business of Public  Storage  Properties XI, Ltd. (the
          "Partnership")  in a  reorganization  transaction  which was effective
          December 31, 1990 (the "Reorganization").

               The Company owns and operates 13 self-storage  facilities located
          in six states and 2 business park facilities  containing commercial or
          industrial spaces located in California and Kansas.

               The term of the  Company is until all  properties  have been sold
          and, in any event, not later than December 31, 2038. The bylaws of the
          Company provide that, during 1997, unless shareholders have previously
          approved such a proposal,  the  shareholders  will be presented with a
          proposal to approve or disapprove  (a) the sale or financing of all or
          substantially  all of the properties and (b) the  distribution  of the
          proceeds  from  such  transaction  and,  in the  case of a  sale,  the
          liquidation of the Company.

2.        SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

          Income Taxes:

               The Company has and intends to continue to qualify as a REIT,  as
          defined in Section 856 of the Internal  Revenue Code (the Code).  As a
          REIT,  the Company is not taxed on that portion of its taxable  income
          which is  distributed  to its  shareholders  provided that the Company
          meets the  requirements  of the Code.  The  Company  believes it is in
          compliance with these requirements and, accordingly,  no provision for
          income taxes has been made.

          Statements of Cash Flows:

               For purposes of  financial  statement  presentation,  the Company
          considers all highly liquid debt instruments purchased with a maturity
          of three months or less to be cash equivalents.

          Real Estate Facilities:

               Cost of  land  includes  appraisal  and  legal  fees  related  to
          acquisition  and  closing  costs.  Buildings,  land  improvements  and
          equipment reflect costs incurred through December 31, 1997 and 1996 to
          develop  primarily  mini-warehouse  facilities and to a lesser extent,
          business  park  facilities.   The  mini-warehouse  facilities  provide
          self-service  storage  spaces for lease,  usually on a  month-to-month
          basis,  to  the  general  public.  The  buildings  and  equipment  are
          depreciated on the straight-line  basis over estimated useful lives of
          25 and 5 years, respectively.

                                      F-6
<PAGE>


2.        SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

          Real Estate Facilities (continued):

               In  1995,  the  Financial   Accounting   Standards  Board  issued
          Statement of Financial Accounting Standards No. 121 ("Statement 121"),
          "Accounting for the Impairment of Long-Lived Assets and for Long-Lived
          Assets to be Disposed of." Statement 121 requires impairment losses to
          be recorded on long-lived assets used in operations when indicators of
          impairment are present and the undiscounted cash flows estimated to be
          generated by those assets are less than the assets'  carrying  amount.
          Statement 121 also addresses the accounting for long-lived assets that
          are expected to be disposed of. The Company  adopted  Statement 121 in
          1996 and based on current  circumstances,  such  adoption did not have
          any effect on the financial statements.

               At  December  31,  1997,  the  basis  of real  estate  facilities
          (excluding land) for Federal income tax purposes (after adjustment for
          accumulated depreciation of $17,442,000 is $9,443,000.

          Revenue Recognition:

               Property rents are recognized as earned.

          Net Income Per Share:

               In  1997,  the  Financial   Accounting   Standards  Board  issued
          Statement  No. 128,  Earnings  per Share.  Statement  128 replaced the
          calculation of primary and fully diluted earnings per share with basic
          and diluted  earnings per share.  Unlike  primary  earnings per share,
          basic earnings per share excludes any dilutive  effects of convertible
          securities.  Diluted  earnings  per  share  is  very  similar  to  the
          previously reported fully diluted earnings per share. All earnings per
          share  amounts for all periods  have been  presented to conform to the
          Statement 128 requirements.

               Net income per share is presented  on a basic and diluted  basis.
          Basic earnings per share represents the Series A shareholders'  rights
          to distributions out of the respective  period's net income,  which is
          calculated by dividing net income after reduction for distributions to
          the Convertible  Series B shareholders  (Series C shareholders are not
          entitled to cash  distributions)  by the  weighted  average  number of
          outstanding  Series A shares  (Note  4).  Diluted  earnings  per share
          assumes  conversion  of the  Convertible  Series B and Series C shares
          into Series A shares.

          Use of Estimates:

               The  preparation of the financial  statements in conformity  with
          generally accepted  accounting  principles requires management to make
          estimates  and  assumptions  that affect the  amounts  reported in the
          financial  statements  and  accompanying  notes.  Actual results could
          differ from those estimates.

          Environmental Cost:

               Substantially all of the Company's facilities were acquired prior
          to  the  time  that  it  was   customary   to  conduct   environmental
          investigations  in connection with property  acquisitions.  During the
          fourth   quarter  of  1995,   the  Company   completed   environmental
          assessments of its properties to evaluate the environmental  condition
          of, and potential environmental liabilities of such properties.  These
          assessments were performed by an independent  environmental consulting
          firm. Based on the assessments,  the Company expensed $106,000 in 1995
          for known environmental remediation  requirements.  Although there can
          be no  assurance,  the  Company  is not  aware  of  any  environmental
          contamination  of any of its property sites which  individually  or in
          the  aggregate  would be material to the Company's  overall  business,
          financial condition, or results of operations.

                                      F-7

<PAGE>
3.       RELATED PARTY TRANSACTIONS

               The Company has a management agreement with Public Storage,  Inc.
          ("PSI")  pursuant to which PSI operates the  Company's  mini-warehouse
          facilities  for a fee  equal to 6% of the  facilities'  monthly  gross
          revenue (as  defined).  The  Company's  business  parks are managed by
          American  Office  Park  Properties,   LP  ("AOPPLP")   pursuant  to  a
          management  contract.  AOPPLP,  an  affiliate  of  PSI,  operates  the
          Company's  business  parks  for a fee  equal  to 5% of the  facilities
          monthly gross income.

               Each Management Agreement,  as amended in February 1995, provides
          that the  agreement  will expire in  February  2002  provided  that in
          February of each year it shall be automatically  extended for one year
          (thereby  maintaining a seven-year  term) unless either party notifies
          the other that the  Management  Agreement  is not being  extended,  in
          which case it expires,  on the first anniversary of its then scheduled
          expiration  date. Each Management  Agreement may also be terminated by
          either party for cause,  but if  terminated  for cause by the Company,
          the Company  retains  the rights to use the service  marks and related
          designs until the then scheduled  expiration  date, if applicable,  or
          otherwise a date seven years after such termination.

               In August 1995, the Management  Agreement for the  mini-warehouse
          facilities was amended to provide that upon demand from PSI made prior
          to December 15,  1995,  the Company  agreed to prepay  (within 15 days
          after such  demand) up to 12 months of  management  fees (based on the
          management  fees for the  comparable  period  during the calendar year
          immediately  preceding such prepayment)  discounted at the rate of 14%
          per year to  compensate  for early  payment.  In  November  1995,  the
          Company prepaid, to PSI, 8 months of 1996 management fees at a cost of
          $205,000. The amount was expensed as management fees paid to affiliate
          during 1996.

               During the second quarter of 1995, the Company borrowed  $145,000
          from an affiliate for working capital purposes. The advance, which was
          repaid in May  1995,  bore  interest  at the  prime  rate  plus  .25%.
          Interest  expense of $1,000 was charged to income in 1995 with respect
          to this advance.


4.       SHAREHOLDERS' EQUITY

               Series A shares are  entitled to all  distributions  of cash from
          sale or  refinancing  and  participate  ratably  with the  Convertible
          Series B shares in  distributions  of cash flow from  operations.  The
          Convertible Series C shares (prior to conversion into Series A shares)
          will not participate in any distributions.

               The Convertible  Series B shares and Convertible  Series C shares
          will convert  automatically  into Series A shares on a share-for-share
          basis  (the  "Conversion")  when  (A) the  sum of (1)  all  cumulative
          dividends and other  distributions  from all sources paid with respect
          to the Series A shares (including liquidating  distributions,  but not
          including   payments   made  to  redeem   such  stock  other  than  in
          liquidation) and (2) the cumulative Partnership distributions from all
          sources  with  respect  to all units  equals  (B) the  product  of $20
          multiplied by the number of the then  outstanding  "Original  Series A
          shares". The term "Original Series A shares" means the Series A shares
          issued in the  Reorganization.  Through December 31, 1997, the Company
          has made and declared  cumulative cash  distributions of approximately
          $31,615,000 with respect to the Series A shares. Accordingly, assuming
          no  repurchases  or  redemptions of Series A shares after December 31,
          1997,   Conversion   will  occur   when   $4,783,000   in   additional
          distributions with respect to the Series A shares have been made.

                                      F-8

<PAGE>



4.        SHAREHOLDERS' EQUITY (CONTINUED)

               Assuming  liquidation  of the  Company  at its net book  value at
          December 31, 1997 and 1996, each Series of common shares would receive
          the following as a liquidating distribution:

                                                1997                 1996
                                        ---------------      ---------------

            Series A                    $    21,566,000      $    21,449,000
            Convertible Series B              1,425,000            1,348,000
            Convertible Series C              4,380,000            3,820,000
                                        ---------------      ---------------
            Total                       $    27,371,000      $    26,617,000
                                        ===============      ===============

                  The Series B and Series C shareholders have agreed that 47,824
         of the Series A shares  received  upon  conversion  of the  Convertible
         Series  B and  Convertible  Series C shares  will  not be  entitled  to
         distributions   attributable  to  sale  or  financing  proceeds.   This
         agreement,  which is binding on transferees of such Series A shares, is
         reflected  in the  liquidation  values  applicable  to the Series A and
         Convertible Series B and C shares.


               The Series A shares,  Convertible Series B shares and Convertible
          Series  C  shares  have  equal  voting  rights.  The  holders  of  the
          Convertible  Series B and  Convertible  Series C shares have agreed to
          vote along with the majority of the unaffiliated Series A shareholders
          on matters other than control of the Company and its business.

               The Company's  Board of Directors has  authorized  the Company to
          purchase up to 400,000 shares of the Company's  Series A common stock.
          As of December 31, 1997, the Company had purchased and retired 301,275
          shares of Series A common  stock,  of which  36,400  and  32,200  were
          purchased and retired in 1996 and 1995, respectively.

               For Federal income tax purposes,  all  distributions  declared by
          the Board of Directors in 1997, 1996 and 1995 were ordinary income.


5.       NOTE PAYABLE TO BANK

               The Company has an unsecured  revolving  credit  facility  with a
          bank for borrowings up to $3,000,000 for working capital  purposes and
          to  repurchase  the  Company's  stock.  Outstanding  borrowings on the
          credit facility,  at the Company's option, bear interest at either the
          bank's prime rate plus .25% or the LIBOR rate plus 2.25%.  Interest is
          payable  monthly.  On December  31,  1999,  all unpaid  principal  and
          accrued interest is due and payable.

               During the first quarter of 1996, the Company borrowed and repaid
          $250,000 on its line of credit  facility.  At December 31, 1997, there
          was no outstanding balance on the credit facility.

               Under  covenants  of the  credit  facility,  the  Company  is (1)
          required to maintain a ratio of liabilities to assets (as defined) for
          each  fiscal  quarter  of not more  than .3 to 1.0,  (2)  required  to
          maintain a debt coverage ratio (as defined) for each fiscal quarter of
          not less than 8 times the debt  service,  (3)  required  to maintain a
          fixed charge  coverage  ratio (as defined) for each fiscal  quarter of
          not less  than  1.0 to 1.0 and (4)  required  to  maintain  a  minimum
          shareholder's  equity  (as  defined)  for each  fiscal  quarter of $20
          million. The Company was in compliance with all covenants in 1997.


                                      F-9
<PAGE>

6.        QUARTERLY RESULTS (UNAUDITED)

               The  following  is a summary of  unaudited  quarterly  results of
          operations:
<TABLE>
<CAPTION>


                                                                          Three months ended
                                                      ---------------------------------------------------------
                                                      March 1997      June 1997      Sept. 1997      Dec. 1997
                                                      ------------  -------------  -------------   ------------
        <S>                                           <C>            <C>            <C>              <C>       
        Revenues                                      $1,836,000     $1,900,000     $1,963,000       $1,944,000
                                                      ------------  -------------  -------------   ------------
        Expenses                                       1,053,000      1,008,000      1,042,000        1,060,000
                                                      ------------  -------------  -------------   ------------
        Net income                                      $783,000       $892,000       $921,000         $884,000
                                                      ============  =============  =============   ============ 
        Basic earnings per share- Series A                 $0.40          $0.45          $0.47            $0.45
                                                      ============  =============  =============   ============ 

        Diluted earnings per share- Series A               $0.31          $0.35          $0.36            $0.36
                                                      ============  =============  =============   ============ 



                                                                         Three months ended
                                                      ---------------------------------------------------------
                                                      March 1996      June 1996      Sept. 1996      Dec. 1996
                                                      ------------  -------------  -------------   ------------
        Revenues                                      $1,741,000     $1,822,000      $1,858,000      $1,832,000
                                                      ------------  -------------  -------------   ------------

        Expenses                                       1,004,000      1,017,000       1,028,000       1,049,000
                                                      ------------  -------------  -------------   ------------

        Net income                                      $737,000       $805,000        $830,000        $783,000
                                                      ============  =============  =============   ============ 

        Basic earnings per share- Series A                 $0.37          $0.40           $0.42           $0.40
                                                      ============  =============  =============   ============ 

        Diluted earnings per share- Series A               $0.29          $0.32           $0.32           $0.31
                                                      ============  =============  =============   ============ 

</TABLE>

               The 1996 and  first  three  quarter  of 1997  earnings  per share
          amounts  have been  reflected  to comply with  Statement  of Financial
          Accounting Standards No. 128, Earnings per share.

7.        Proposed Merger (unaudited)

               The Company and American Office Park Properties, Inc. (AOPP), the
          general partner of AOPPLP, have agreed, subject to certain conditions,
          to merge,  pursuant to an Amended and Restated  Agreement  and Plan of
          Reorganization  by and  among  The  Company,  AOPP and PSI dated as of
          December  17,  1997.  AOPP,  an  affiliate  of PSI,  owns and operates
          commercial  properties directly and through AOPPLP. Upon the merger of
          AOPP into the Company, each of the 1,819,937 outstanding shares of the
          Company  common  stock  series A (other than shares held by holders of
          the Company Common stock series A (" Series A Shareholders")  who have
          properly  exercised  dissenters'  rights under  California law ) would
          continue to be owned by the Series A  Shareholders  or converted  into
          the right to receive cash as follows: (i) with respect to up to 20% of
          the outstanding  common stock series A of the Company,  $20.50 in cash
          and (ii) the balance of the  outstanding  common stock series A of the
          Company would continue to be owned by the Series A Shareholder. In the
          merger, (i) each share of the Company's common stock series B and each
          share of the Company's  common stock series C would be converted  into
          .8641 shares of the  Company's  common stock series A (or up to 20% in
          cash) and (ii) each share of AOPP's  capital  stock will be  converted
          into 1.18 shares of the Company's  common stock series A (or up to 20%
          in cash).  After the  merger,  the  Company  would have  approximately
          14,200,000  outstanding  shares of common  stock series A (assuming no
          cash elections,  with  approximately  an additional  6,222,000  shares
          reserved for issuance upon

                                      F-10
<PAGE>

7.        Proposed Merger (unaudited)
          (continued)

          conversion  of  partnership  interests  of AOPPLP  into the  Company's
          common stock series A. After the merger,  the ownership of the Company
          by public shareholders will be reduced  significantly.  As a result of
          the merger,  the Company's name will be changed to PS Business  Parks,
          Inc.  and  AOPPLP's  name will be changed to PS Business  Parks,  L.P.
          Concurrently   with  the  merger,   the  Company   will   exchange  13
          mini-warehouses for 11 commercial  properties owned by PSI. The merger
          is conditioned on, among other requirements, approval by the Company's
          shareholders. After the merger, the Company will be a self-managed and
          self-advised  REIT which will own and  operate  directly  and  through
          AOPPLP  62   commercial   properties   located   in  10  states   with
          approximately  6.9 million net  rentable  square feet of space and, in
          addition, will manage, for a fee, 36 commercial properties.  A meeting
          of the Company's  shareholders is scheduled for March 16, 1998. If the
          merger is approved at the March 16,  1998  meeting,  it is expected to
          close shortly thereafter.

                                      F-11
<PAGE>
<TABLE>
<CAPTION>

                       PUBLIC STORAGE PROPERTIES XI, INC.
                           SCHEDULE III - REAL ESTATE
                          AND ACCUMULATED DEPRECIATION


                                                                                                       
                                                                  Initial Cost             Costs       
                                                                         Bldg., Land   subsequent to   
    Date                                                                    Imp &       construction   
  Completed           Description           Encumbrances       Land       Equipment    (Improvements)  
- -------------------------------------------------------------------------------------------------------
 Mini-warehouses:
    <S>      <C>                                <C>            <C>           <C>               <C>     
    11/84     Branford / Owens Commerce          -             $551,000      $904,000          $93,000 
    10/84     Houston / De Soto Dr               -              882,000     1,111,000          121,000 
    10/84     Las Vegas / Charleston             -              543,000     1,065,000           99,000 
    12/84     Colma / El Camino Real             -              675,000     1,406,000           79,000 
    02/85     Pasadena /Arroyo Pkwy I            -            3,021,000     3,764,000          185,000 
    10/84     Tempe / E Broadway                 -              346,000       916,000           60,000 
    11/84     Las Vegas / Tropicana Ave          -              590,000     1,135,000           93,000 
    11/84     Houston / East Freeway             -              394,000       970,000          152,000 
    05/85     Phoenix / N 43rd Ave               -              193,000       969,000           86,000 
    07/85     Phoenix / Black Canyon             -              201,000     1,025,000           98,000 
    12/85     Nesconset / Southern Blvd          -              429,000     1,871,000          114,000 
    02/86     Austin / Ben White Blvd            -              700,000       972,000           74,000 
    07/85     Arlington / E Pioneer Pkwy         -              590,000     1,187,000          103,000 

 Business Parks:

    04/85     Overland Park / I-435              -            1,172,000     2,671,000          827,000    
    05/85     Phoenix / 43RD Ave                 -              493,000     1,658,000          197,000    
    07/85     Phoenix / Black Canyon Hwy         -              236,000       610,000           55,000    
    03/86     S. San Francisco / San             -            1,102,000     2,017,000          330,000    
              Mateo
                                          ----------------------------------------------------------------
                                                 -          $12,118,000   $24,251,000       $2,766,000    
                                          ================================================================
</TABLE>
<TABLE>
<CAPTION>

                       PUBLIC STORAGE PROPERTIES XI, INC.
                           SCHEDULE III - REAL ESTATE
                          AND ACCUMULATED DEPRECIATION


                                                                                                           Life on Which
                                                                                                          Depreciation in
                                          Gross Carrying Amount At December 31, 1997                       Latest Income
    Date                                                Bldg., Land Imp                   Accumulated      Statements is
  Completed           Description             Land        & Equipment         Total       Depreciation        Computed
- --------------------------------------------------------------------------------------------------------------------------
 Mini-warehouses:
    <S>      <C>                               <C>             <C>          <C>                <C>           <C>       
    11/84     Branford / Owens Commerce        $551,000        $997,000     $1,548,000         ($505,000)    5-25 Years
    10/84     Houston / De Soto Dr              882,000       1,232,000      2,114,000          (624,000)    5-25 Years
    10/84     Las Vegas / Charleston            543,000       1,164,000      1,707,000          (609,000)    5-25 Years
    12/84     Colma / El Camino Real            675,000       1,485,000      2,160,000          (734,000)    5-25 Years
    02/85     Pasadena /Arroyo Pkwy I         3,021,000       3,949,000      6,970,000        (1,980,000)    5-25 Years
    10/84     Tempe / E Broadway                346,000         976,000      1,322,000          (513,000)    5-25 Years
    11/84     Las Vegas / Tropicana Ave         590,000       1,228,000      1,818,000          (629,000)    5-25 Years
    11/84     Houston / East Freeway            394,000       1,122,000      1,516,000          (559,000)    5-25 Years
    05/85     Phoenix / N 43rd Ave              193,000       1,055,000      1,248,000          (529,000)    5-25 Years
    07/85     Phoenix / Black Canyon            201,000       1,123,000      1,324,000          (537,000)    5-25 Years
    12/85     Nesconset / Southern Blvd         429,000       1,985,000      2,414,000          (914,000)    5-25 Years
    02/86     Austin / Ben White Blvd           700,000       1,046,000      1,746,000          (473,000)    5-25 Years
    07/85     Arlington / E Pioneer Pkwy        590,000       1,290,000      1,880,000          (629,000)    5-25 Years

 Business Parks:

    04/85     Overland Park / I-435           1,172,000       3,498,000      4,670,000        (1,730,000)    5-25 Years
    05/85     Phoenix / 43RD Ave                493,000       1,855,000      2,348,000          (823,000)    5-25 Years
    07/85     Phoenix / Black Canyon Hwy        236,000         665,000        901,000          (316,000)    5-25 Years
    03/86     S. San Francisco / San          1,102,000       2,347,000      3,449,000        (1,094,000)    5-25 Years
              Mateo
                                          ----------------------------------------------------------------
                                            $12,118,000     $27,017,000    $39,135,000      ($13,198,000)
                                          ================================================================

                                      F-12
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                       PUBLIC STORAGE PROPERTIES XI, INC.
                           REAL ESTATE RECONCILIATION
                            SCHEDULE III (CONTINUED)



(a)  The  following  is  a  reconciliation  of  costs  and  related  accumulated
     depreciation.

                              COSTS RECONCILIATION


                                                                            Years Ended December 31,
                                                           ----------------------------------------------------------
                                                                 1997                 1996                 1995
                                                           ----------------     ----------------     ----------------
<S>                                                        <C>                  <C>                  <C>             
Balance at the beginning of the period                     $     38,644,000     $     38,149,000     $     37,726,000



Additions during the period:

  Improvements                                                      491,000              507,000              472,000

Deductions during the period                                         -                   (12,000)             (49,000)
                                                           ----------------     ----------------     ----------------
Balance at the close of the period                         $     39,135,000     $     38,644,000     $     38,149,000
                                                           ================     ================     ================


                                        ACCUMULATED DEPRECIATION RECONCILIATION


                                                                            Years Ended December 31,
                                                           ----------------------------------------------------------
                                                                 1997                 1996                 1995
                                                           ----------------     ----------------     ----------------
Balance at the beginning of the period                     $     12,000,000     $     10,862,000     $      9,806,000

Additions during the period:

  Depreciation                                                    1,198,000            1,149,000            1,105,000

Deductions during the period                                         -                   (11,000)             (49,000)
                                                           ----------------     ----------------     ----------------
Balance at the close of the period                         $     13,198,000     $     12,000,000     $     10,862,000
                                                           ================     ================     ================

</TABLE>
(b)  The aggregate  depreciable cost of real estate (excluding land) for Federal
     income tax purposes is $26,885,000.

                                      F-13
<PAGE>
                       PUBLIC STORAGE PROPERTIES XI, INC.

                                  EXHIBIT INDEX
                                  (Item 14(c))

2.1       Amended  and  Restated  Agreement  and  Plan of  Reorganization  among
          Registrant,  American Office Park Properties, Inc. ("AOPP") and Public
          Storage,  Inc.  ("PSI")  dated as of  December  17,  1997.  Filed with
          Registrant's  Registration  Statement No.  333-45405 and  incorporated
          herein by reference.

3.1       Amended   and   Restated   Articles  of   Incorporation.   Filed  with
          Registrant's  Annual  Report on Form 10-K for the year ended  December
          31, 1991 and incorporated herein by reference.

3.2       Certificate  of  Amendment  of Articles of  Incorporation.  Filed with
          Registrant's  Annual  Report on Form 10-K for the year ended  December
          31, 1992 and incorporated herein by reference.

3.3       Amended  and  Restated  Bylaws,  as amended.  Filed with  Registrant's
          Registration  Statement  No.  333-45405  and  incorporated  herein  by
          reference.

10.1      Amended   Management   Agreement   dated  February  21,  1995  between
          Registrant and Public Storage Management, Inc. Filed with Registrant's
          Annual  Report on Form 10-K for the year ended  December  31, 1994 and
          incorporated herein by reference.

10.2      Amended   Management   Agreement   dated  February  21,  1995  between
          Registrant and Public Storage Commercial  Properties Group, Inc. Filed
          with  Registrant's  Annual  Report  on Form  10-K for the  year  ended
          December 31, 1994 and incorporated herein by reference.

10.3      Amendment to Amended  Management  Agreement dated August 8, 1995 among
          Registrant, Public Storage Management, Inc. and Storage Equities, Inc.
          Filed with  Registrant's  Quarterly Report on Form 10-Q for the period
          ended September 30, 1995 and incorporated herein by reference.

10.4      Amended Management Agreement between Storage Equities, Inc. and Public
          Storage  Commercial  Properties  Group,  Inc. dated as of February 21,
          1995.  Filed with PSI's Annual  Report on Form 10-K for the year ended
          December 31, 1994 and incorporated herein by reference.

10.5      Revolving  Note and Loan  Agreement  between  Registrant and The First
          National  Bank  of  Boston  dated   December  29,  1995.   Filed  with
          Registrant's  Annual  Report on Form 10-K for the year ended  December
          31, 1995 and incorporated herein by reference.

10.6      Revolving Loan by PSI to American  Office Park  Properties,  L.P. (the
          "Operating  Partnership")  dated as of December 16,  1997.  Filed with
          Registrant's  Registration  Statement No.  333-45405 and  incorporated
          herein by reference.

*10.7     AOPP's 1997 Stock Option and Incentive Plan.  Filed with  Registrant's
          Registration  Statement  No.  333-45405  and  incorporated  herein  by
          reference.

10.8      Second  Amended and Restated  Agreement of Limited  Partnership of the
          Operating Partnership. Filed herewith.

10.9      Merger and Contribution  Agreement dated as of December 23, 1997 among
          Acquiport Two Corporation, Acquiport Three Corporation, New York State
          Common  Retirement  Fund,  the  Operating  Partnership,  AOPP and AOPP
          Acquisition   Corp.  Three.   Filed  with  Registrant's   Registration
          Statement No. 333-45405 and incorporated herein by reference.

10.10     Agreement Among Shareholders and Company dated as of December 23, 1997
          among Acquiport Two Corporation,  AOPP, the Operating  Partnership and
          PSI. Filed with Registrant's  Registration Statement No. 333-45405 and
          incorporated herein by reference.

<PAGE>

10.11     Amendment  to Agreement  Among  Shareholders  and Company  dated as of
          January 21, 1998 among Acquiport Two Corporation,  AOPP, the Operating
          Partnership and PSI. Filed with  Registrant's  Registration  Statement
          No. 333-45405 and incorporated herein by reference.

10.12     Non-Competition  Agreement  dated as of  December  23, 1997 among PSI,
          AOPP, the Operating  Partnership and Acquiport Two Corporation.  Filed
          with   Registrant's   Registration   Statement   No.   333-45405   and
          incorporated herein by reference.

**10.13   Employment  Agreement between AOPP and Ronald L. Havner,  Jr. dated as
          of December 23, 1997. Filed with Registrant's  Registration  Statement
          No. 333-45405 and incorporated herein by reference.

**10.14   Employment  Agreement  between  AOPP and Mary Jayne Howard dated as of
          December 23, 1997. Filed with Registrant's  Registration Statement No.
          333-45405 and incorporated herein by reference.

10.15     Common  Stock  Purchase  Agreement  dated as of January 23, 1998 among
          AOPP and the  Investors  signatory  thereto.  Filed with  Registrant's
          Registration  Statement  No.  333-45405  and  incorporated  herein  by
          reference.

10.16     Registration  Rights Agreement dated as of January 30, 1998 among AOPP
          and  the  Investors   signatory   thereto.   Filed  with  Registrant's
          Registration  Statement  No.  333-45405  and  incorporated  herein  by
          reference.

27        Financial Data Schedule. Filed herewith.

99        AOPP Pro Forma Consolidated Financial Statements. Filed herewith.

- ---------------
*         Compensatory benefit plan.

**        Management contract.

                                                     
                           SECOND AMENDED AND RESTATED          Exhibit 10.8
                        AGREEMENT OF LIMITED PARTNERSHIP
                                       OF
                      AMERICAN OFFICE PARK PROPERTIES, L.P.



[EXHIBITS  TO THIS  AGREEMENT  HAVE BEEN  OMITTED AND WILL BE  FURNISHED  TO THE
SECURITIES AND EXCHANGE COMMISSION UPON REQUEST.]



<PAGE>
                           SECOND AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                                       OF
                      AMERICAN OFFICE PARK PROPERTIES, L.P.


          This SECOND  AMENDED AND  RESTATED  AGREEMENT  OF LIMITED  PARTNERSHIP
("Agreement"),   dated  as  of  February  24,  1998,  of  AMERICAN  OFFICE  PARK
PROPERTIES,  L.P.  (the  "Partnership")  is entered  into by and among  AMERICAN
OFFICE PARK PROPERTIES,  INC., a California corporation (the "General Partner"),
and the  Persons  whose  names  are set forth on the  attached  Exhibit A as the
Limited  Partners,  together with any other  Persons who become  Partners in the
Partnership as provided below.

          A. This  Agreement  amends and restates in its  entirety  that certain
Amended and Restated  Agreement of Limited  Partnership of American  Office Park
Properties,  L.P.,  dated as of December  11,  1997,  as amended by that certain
First  Amendment  also  dated as of  December  11,  1997,  that  certain  Second
Amendment  dated as of December 15, 1997, and that certain Third Amendment dated
as of December 23, 1997.

          B. The Partners desire to ratify the formation of the Partnership, and
to set forth their  respective  rights and duties relating to the Partnership on
the terms as provided in this Agreement.

          The parties agree as follows:



                                1. DEFINED TERMS

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

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

          "ADDITIONAL  FUNDS"  shall  have the  meaning  set  forth  in  Section
4.1(b)(1).

          "ADDITIONAL   LIMITED   PARTNER"  means  a  Person   admitted  to  the
Partnership as a Limited  Partner in accordance with the terms of this Agreement
and who is shown as such on the books and records of the Partnership.

          "AFFILIATE" means, with respect to any Person, (a) any Person directly
or  indirectly  controlling,  controlled  by or under  common  control with such
Person,  (b)  any  Person  owning  or  controlling  10  percent  or  more of the
outstanding voting interests of such Person, (c) any Person of which such Person
owns or controls 10 percent or more of the voting interest,  or (d) any officer,
director, general partner or trustee of such Person or any Person referred to in
clauses (a), (b) and (c) above.
<PAGE>

          "AGREEMENT"  means this  Amended  and  Restated  Agreement  of Limited
Partnership, as it may be amended, supplemented or restated from time to time.

          "ARTICLES OF INCORPORATION" means the Amended and Restated Articles of
Incorporation  of the General  Partner filed with the Office of the Secretary of
State of the State of  California  on November 13, 1995,  as amended or restated
from  time to  time,  or the  articles  of  incorporation,  as  amended,  of any
permitted successor by merger to the General Partner.

          "ASSIGNEE"  means a Person to whom one or more  Partnership  Units (as
defined below) 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.

          "AVAILABLE  CASH"  means  with  respect  to any  period for which such
calculation is being made:


               (a) all cash revenues and funds received by the Partnership  from
     whatever source (excluding the proceeds of any capital  contribution)  plus
     the amount of any reduction  (including,  without  limitation,  a reduction
     resulting because the General Partner determines such amounts are no longer
     necessary) in reserves,  working capital  accounts or other cash or similar
     balances of the Partnership referred to in clause (b)(iv) below;

               (b) less the sum of the following (except to the extent made with
     the proceeds of any capital contribution):

                    (i) all  interest,  principal  and other debt  payments made
          during such period by the Partnership,

                    (ii) all cash expenditures  (including capital expenditures)
          made by the Partnership during such period,

                    (iii) investments in any entity (including loans made to the
          entity)  to  the  extent  that  such  investments  are  not  otherwise
          described in clauses (b)(i) or (ii), and

                    (iv) the  amount  of any  increase  during  such  period  in
          reserves,  working capital  accounts or other cash or similar balances
          that the General  Partner  determines is necessary or  appropriate  to
          meet the needs of the Partnership in its sole and absolute discretion.

Notwithstanding  the  foregoing,  Available  Cash  shall  not  include  any cash
received or reductions in reserves,  or take into account any disbursements made
or reserves  established,  after commencement of the dissolution and liquidation
of the Partnership.

          "BUSINESS DAY" means any day except a Saturday, Sunday or other day on
which commercial banks in Los Angeles,  California are authorized or required by
law to close.

          "CAPITAL  ACCOUNT" means the Capital Account  maintained for a Partner
pursuant to Section 4.4.

                                       2
<PAGE>

          "CERTIFICATE" means the Certificate of Limited Partnership relating to
the  Partnership  filed in the office of the  Secretary of State of the State of
California,  as amended from time to time in  accordance  with the terms of this
Agreement and the Act.

          "CODE"  means the  Internal  Revenue  Code of 1986,  as  amended.  Any
reference in this Agreement to a specific  section or sections of the Code shall
be deemed to include a reference to any corresponding provision of future law.

          "COMMON  SHARES" means the shares of Common Stock,  $.10 par value per
share, of the General Partner.

          "EVENT OF DISSOLUTION" has the meaning set forth in Section 13.1.

          "GENERAL  PARTNER"  means  American  Office Park  Properties,  Inc., a
California  corporation,   or  its  successors  as  a  general  partner  of  the
Partnership.

          "GENERAL PARTNERSHIP  INTEREST" means a Partnership Interest held by a
General  Partner  with  respect  to its  interest  as a general  partner  of the
Partnership.  For purposes of allocations and distributions,  but not for voting
purposes,  a  General  Partnership  Interest  may be  expressed  as a number  of
Partnership Units.

          "IRS" means the Internal Revenue Service of the United States.

          "INCAPACITY" or "INCAPACITATED" means:

               (a) as to any  Partner  who is a  natural  person  death or total
     physical disability,  as reasonably determined by the General Partner or by
     an entry by a court of competent jurisdiction  adjudicating such Partner as
     incompetent to manage his or her Person or estate,

               (b) as to any  corporation  that is a  Partner,  the  filing of a
     certificate of dissolution,

               (c) as to any partnership or limited  liability company that is a
     Partner,  the dissolution and commencement of winding up of the partnership
     or limited liability company,

               (d) as to any estate that is a Partner,  the  distribution by the
     fiduciary of the estate's entire interest in the Partnership,

               (e)  as  to  any  trustee  of a  trust  that  is a  Partner,  the
     termination of the trust (but not the substitution of a new trustee) or

               (f) 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

                    (i) the Partner  commences a  voluntary  proceeding  seeking
          liquidation,  reorganization  or other  relief  under any  bankruptcy,
          insolvency or similar law now or later in effect,

                    (ii) the Partner executes and delivers a general  assignment
          for the benefit of the Partner's creditors,

                                       3
<PAGE>

                    (iii)  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 voluntary or involuntary,  proceeding
          under any bankruptcy, or similar law now or later in effect,

                    (iv) 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,

                    (v)  any   involuntary   proceeding   seeking   liquidation,
          reorganization  or other relief under any  bankruptcy,  insolvency  or
          other similar law now or later in effect has not been dismissed within
          60 days after its commencement,

                    (vi) the  appointment  of a trustee,  receiver or liquidator
          that  has  not  been  vacated  or  stayed   within  90  days  of  such
          appointment, or

                    (vii)  an  appointment  referred  to in  clause  (vi) is not
          vacated within 90 days after the expiration of any such stay.

          "INDEMNITEE" means:

               (a) any Person made a party to a  proceeding  by reason of his or
     her status as (i) a General Partner,  (ii) a Limited  Partner,  or (iii) an
     officer of the Partnership or of the General Partner, and

               (b) 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.

          "LIMITED  PARTNER"  means any  Person  named as a Limited  Partner  in
Exhibit A attached to this  Agreement,  as such Exhibit 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 in the Partnership.

          "LIMITED  PARTNERSHIP  INTEREST"  means a  Partnership  Interest  of a
Limited Partner (and any Partnership  Interest of the General Partner other than
the General Partnership  Interest) in the Partnership  representing a fractional
part of the Partnership Interests of all Limited Partners.

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

          "NEW SECURITIES" has the meaning set forth in Section 4.2(c).

          "NOTICE OF REDEMPTION" means the Notice of Redemption substantially in
the form of Exhibit B to this Agreement.

          "OPTION  PLANS" means the option plans for Common Shares or Units,  as
the case may be, restricted share plans or employee benefit plans established by
the General Partner or the Partnership.

                                       4
<PAGE>

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

          "PARTNERSHIP"  means the limited  partnership formed under the Act and
pursuant to this Agreement, and any successor to that limited partnership.

          "PARTNERSHIP  INTEREST" means an ownership interest in the Partnership
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  Partnership
Units.

          "PARTNERSHIP  RECORD  DATE" means the record date  established  by the
General  Partner either (a) for the  distribution  of Available Cash pursuant to
Section  5.1,  which  shall be the same as the record  date  established  by the
General  Partner for a distribution  to its  shareholders  of some or all of its
portion of such  distribution,  or (b) for determining the Partners  entitled to
vote on or consent to any  proposed  action for which the consent or approval of
the Partners is sought.

          "PARTNERSHIP  UNIT" or "UNIT" means a fractional,  undivided  share of
the  Partnership  Interests of all Partners  issued pursuant to Sections 4.1 and
4.2,  in such  number as set forth on Exhibit A, as such  Exhibit may be amended
from time to time, and as such numbers may be adjusted as a result of changes in
the Unit Adjustment  Factor. The ownership of Partnership Units may be evidenced
by a non-transferable, non-negotiable certificate for Units substantially in the
form attached as Exhibit C.

          "PARTNERSHIP  YEAR"  means the fiscal year of the  Partnership,  which
shall be the calendar year.

          "PERCENTAGE  INTEREST"  means,  as to a Partner,  its  interest in the
Partnership  as  determined  by  dividing  the  Partnership  Units owned by such
Partner  by the total  number  of  Partnership  Units  then  outstanding  and as
specified in the attached Exhibit A, as such Exhibit may be amended from time to
time.

          "PERSON"  means  an  individual,  corporation,   partnership,  limited
liability company, association, trust, estate or other entity or organization.

          "PREFERRED  SHARES"  shall  mean the  shares of  Non-Voting  Preferred
Stock, $.10 par value per share, of the General Partner.

          "PROFIT" and "LOSS" have the meaning set forth in Section 6.1(f).

          "REDEEMING PARTNER" has the meaning set forth in Section 8.6(a).

          "REDEMPTION AMOUNT" means an amount of cash per Partnership Unit equal
to the Value on the  Valuation  Date of the  Common  Shares  that the  Redeeming
Partner  being  redeemed  would have been  entitled  to  receive if the  General
Partner were to assume the Partnership's  obligation to redeem Partnership Units
of such Redeeming Partner pursuant to Section 8.6(d) by issuing Common Shares.

                                       5
<PAGE>

          "REDEMPTION RIGHT" has the meaning set forth in Section 8.6(a).

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

          "REIT" means a real estate  investment  trust under Section 856 of the
Code.

          "SECURITIES  ACT" means the  Securities Act of 1933, as the same shall
be amended from time to time.

          "SHARES"  means any Common  Shares  issued to a Limited  Partner  upon
conversion of such Limited Partner's Units pursuant to Section 8.6(d).

          "SHARES AMOUNT" means a number of Common Shares equal to the number of
Partnership  Units (as  appropriately  adjusted  pursuant to changes in the Unit
Adjustment Factor) offered for redemption by a Redeeming Partner; provided that,
if the General  Partner issues to all holders of Common Shares rights,  options,
warrants or convertible  or  exchangeable  securities  entitling such holders to
subscribe  for  or  purchase   Shares  or  any  other   securities  or  property
(collectively,  the  "rights"),  then the Shares  Amount shall also include such
rights that a holder of that number of Shares would be entitled to receive.

          "SPECIFIED REDEMPTION DATE" means the tenth Business Day after receipt
by the General Partner of a Notice of Redemption.

          "SUBSIDIARY"  means,  with respect to any Person,  any  corporation or
other  entity of which a majority of (a) the voting  power of the voting  equity
securities  or (b) the  outstanding  equity  interests  is  owned,  directly  or
indirectly, by such Person.

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

          "UNIT  ADJUSTMENT  FACTOR"  means  initially  1.0 provided that in the
event that the General Partner

                           (a)  declares or pays a dividend  on its  outstanding
         Common Shares in Common Shares or makes a  distribution  to all holders
         of its outstanding Common Shares in Common Shares,

               (b) subdivides its outstanding Common Shares or

               (c) combines its outstanding  Common Shares into a smaller number
     of Common Shares,

the Unit Adjustment Factor shall be adjusted to be a fraction,  the numerator of
which shall be the number of Common Shares issued and  outstanding on the record
date for such dividend,  distribution,  subdivision or combination (assuming for
such purposes that such dividend,  distribution,  subdivision or combination has
occurred  as of such  time),  and the  denominator  of which shall be the actual
number of Common Shares  (determined  without the above  assumption)  issued and
outstanding on the record date for such dividend,  distribution,  subdivision or
combination.  If another entity shall become the General Partner (the "Successor
Entity"),  the Unit  Adjustment  Factor shall be adjusted to be a fraction,  the
 
                                      6
<PAGE>

numerator of which is the value of one share of the predecessor General Partner,
determined as of the date when the Successor Entity becomes the General Partner,
and the denominator of which is the value of one share of the Successor  Entity,
determined as of that same date.  The Board of Directors of the General  Partner
shall determine when an adjustment to the Unit  Adjustment  Factor is necessary.
The Board's  determination  as to whether an  adjustment  is  necessary  and the
amount  of such  adjustment  shall be  conclusive  absent  manifest  error.  Any
adjustment  to the Unit  Adjustment  Factor shall become  effective  immediately
after the effective  date of such event  retroactive to the record date, if any,
for such event (provided,  however,  if a Notice of Redemption is given prior to
such a record date but the Specified  Redemption  Date is after the record date,
then the change in the Unit  Adjustment  Factor with  respect to that  Redeeming
Partner shall be  retroactive to the date of the Notice of  Redemption).  In the
event of any change in the Unit  Adjustment  Factor,  the number of  Partnership
Units held by each Partner shall be proportionately  adjusted by multiplying the
number of Partnership Units held by such Partner immediately prior to the change
in the Unit Adjustment Factor by the new Unit Adjustment  Factor;  the intent of
this provision is for one Partnership Unit to remain exchangeable for one Common
Share without dilution.

          "VALUATION DATE" means the date of receipt by the General Partner of a
Notice  of  Redemption  or,  if  such  date is not a  Business  Day,  the  first
subsequent Business Day.

          "VALUE"  means,  with  respect to a Common  Share,  the average of the
daily  market  price  for the ten  (10)  consecutive  trading  days  immediately
preceding the Valuation  Date.  The market price for each such trading day shall
be:

               (a) if the Common Shares are listed or admitted to trading on any
     securities  exchange or the Nasdaq  National  Market,  the  closing  price,
     regular  way, on such day, or if no such sale takes place on such day,  the
     average of the closing bid and asked prices on such day;

               (b) if the Common Shares are not listed or admitted to trading on
     any securities  exchange or the Nasdaq National Market,  th0e last reported
     sale price on such day or, if no sale takes place on such day,  the average
     of the closing bid and asked  prices on such day, as reported by a reliable
     quotation source designated by the General Partner; or

               (c) if the Common Shares are not listed or admitted to trading on
     any  securities  exchange  or the Nasdaq  National  Market and no such last
     reported  sale price or closing  bid and asked  prices are  available,  the
     average  of the  reported  high bid and low asked  prices  on such day,  as
     reported by a reliable  quotation source designated by the General Partner,
     or if there  shall be no bid and asked  prices on such day,  the average of
     the high bid and low asked prices,  as so reported,  on the most recent day
     (not more than 10 days prior to the date in question) for which prices have
     been so  reported;  provided  that if  there  are no bid and  asked  prices
     reported during the 10 days prior to the date in question, the Value of the

                                       7
<PAGE>

     Common  Shares shall be determined  by the General  Partner  acting in good
     faith  on  the  basis  of  such  quotations  and  other  information  as it
     considers, in its reasonable judgment, appropriate.

If a holder of Common  Shares  would be entitled  to receive  rights to purchase
Common Shares  ("Common Share  Rights")  issued to all holders of Common Shares,
then the Value of such Common Share Rights  shall be  determined  by the General
Partner  acting  in good  faith  on the  basis  of  such  quotations  and  other
information as it considers, in its reasonable judgment, appropriate.


                            2. ORGANIZATIONAL MATTERS

     2.1 ORGANIZATION AND FORMATION: APPLICATION OF ACT.

          (a) ORGANIZATION AND FORMATION OF PARTNERSHIP. The General Partner and
the Limited Partners ratify the formation and continuation of the Partnership as
a limited  partnership  according  to all of the terms  and  provisions  of this
Agreement and otherwise in accordance  with the Act. The General  Partner is the
sole general partner and the Limited  Partners are the sole limited  partners of
the Partnership.

          (b)  APPLICATION  OF ACT.  The  Partnership  is a limited  partnership
subject to the  provisions of the Act and the terms and  conditions set forth in
this Agreement.  Except as expressly provided in this Agreement to the contrary,
the  rights  and  obligations  of  the  Partners  and  the   administration  and
termination of the Partnership  shall be governed by the Act. No Partner has any
interest  in any  Partnership  Property,  and the  Partnership  Interest of each
Partner shall be personal property for all purposes.

     2.2 NAME. The name of the Partnership is American  Office Park  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  of  the  General   Partner.   The  words   "Limited
Partnership,"  "L.P.,"  "Ltd." or similar  words or letters shall be included in
the  Partnership's  name where  necessary for the purposes of complying with the
laws of any jurisdiction  that so requires.  The General Partner in its sole and
absolute  discretion may change the name of the Partnership at any time and from
time to time and shall  notify the  Limited  Partners of such change in the next
regular  communication  to the Limited  Partners;  provided that the name of the
Partnership  may not be  changed  to  include  the name of any  Limited  Partner
without the written consent of that Limited Partner.

     2.3  PRINCIPAL  OFFICE.   The  address  of  the  principal  office  of  the
Partnership shall be located at 701 Western Avenue, Glendale,  California 91201,
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  California as the General
Partner deems advisable.

     2.4 TERM. The term of the Partnership  commenced as of January 1, 1997, and
shall continue until December 31, 2096,  unless it is dissolved  sooner pursuant
to the provisions of Article 13 or as otherwise provided by law.

                                       8
<PAGE>


                                   3. PURPOSE

     3.1 PURPOSE  AND  BUSINESS.  The  purpose and nature of the  business to be
conducted by the Partnership is:

               (a) to conduct any business  that may be lawfully  conducted by a
          limited partnership organized pursuant to the Act,

               (b) to enter into any partnership, joint venture or other similar
          arrangement  to engage in any of the  foregoing  or the  ownership  of
          interests in any entity engaged in (directly or indirectly) any of the
          foregoing and

               (c) to do anything necessary or incidental to the foregoing;

provided,  however, that each of the foregoing clauses (a), (b) and (c) shall be
limited and  conducted in such a manner as to permit the General  Partner at all
times to be classified as a REIT,  unless the General Partner provides notice to
the Partnership that it intends to cease or has ceased to qualify as a REIT. The
Partners  acknowledge that the status of the General Partner as a REIT inures to
the benefit of all Partners and not solely to the benefit of the General Partner
and its affiliates.

     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  described in this
Agreement and for the protection and benefit of the  Partnership;  provided that
the Partnership shall not take, or refrain from taking,  any action that, in the
judgment of the General Partner, in its sole and absolute discretion,  (a) could
adversely  affect the ability of the General Partner to continue to qualify as a
REIT,  (b) could  subject  the  General  Partner to any  additional  taxes under
Section  857 or  Section  4981  of the  Code  or (c)  could  violate  any law or
regulation  of any  governmental  body or agency  having  jurisdiction  over the
General Partner or its  securities,  unless such action (or inaction) shall have
been specifically consented to by the General Partner in writing.

     3.3 PARTNERSHIP  ONLY FOR PURPOSES  SPECIFIED.  The Partnership  shall be a
partnership  only for the purposes  specified in Section 3.1, and this Agreement
shall not be deemed to create a  partnership  among the Partners with respect to
any activities  whatsoever other than the activities  within the purposes of the
Partnership  as specified in Section 3.1.  Except as otherwise  provided in this
Agreement,  no Partner  shall have any  authority  to act for,  bind,  commit or
assume  any  obligation  or  responsibility  on behalf of the  Partnership,  its
properties or any other Partner.  No Partner, in its capacity as a Partner under
this  Agreement,  shall  be  responsible  or  liable  for  any  indebtedness  or
obligation of another  Partner,  nor shall the  Partnership  be  responsible  or
liable for any indebtedness or obligation of any Partner, incurred either before
or after the execution and delivery of this Agreement by such Partner, except as
to those  responsibilities,  liabilities,  indebtedness or obligations  incurred
pursuant to and as limited by the terms of this Agreement and the Act.

                                       9
<PAGE>

     3.4 REPRESENTATIONS AND WARRANTIES BY THE PARTIES.

          (a) Each Partner that is an individual represents and warrants to each
other Partner that:

               (i) the  consummation  of the  transactions  contemplated by this
          Agreement  to be performed by such Partner will not result in a breach
          or  violation  of or a default  under,  any  agreement  by which  such
          Partner or any of such  Partner's  property  is or are  bound,  or any
          statute,  regulation,  order or other  law to which  such  Partner  is
          subject, and

               (ii) such  Partner  shall  inform the  Partnership  whether  such
          Partner is a "foreign person" within the meaning of Section 1445(f) of
          the Code.

          (b) Each Partner that is not an individual  represents and warrants to
each other Partner that:

               (i)  all  transactions  contemplated  by  this  Agreement  to  be
          performed by it have been duly  authorized  by all  necessary  action,
          including  without   limitation,   that  of  its  general  partner(s),
          committee(s),     trustee(s),    beneficiaries,    directors    and/or
          shareholder(s), as the case may be, as required,

               (ii) the consummation of such transactions  shall not result in a
          breach or violation of, or a default under, its partnership agreement,
          trust agreement, charter or by-laws, as the case may be, any agreement
          by which such Partner or any of such  Partner's  properties  or any of
          its partners, beneficiaries, trustees or shareholders, as the case may
          be, is or are bound, or any statute, regulation, order or other law to
          which such Partner or any of its partners, trustees,  beneficiaries or
          shareholders, as the case may be, is or are subject and

               (iii) such  Partner  shall  inform the  Partnership  whether such
          Partner is a "foreign person" within the meaning of Section 1445(f) of
          the Code.

          (c) Each Limited Partner further represents, warrants and agrees that,
it does not and will not,  without  the prior  written  consent  of the  General
Partner, actually own or constructively own (under the attribution rules of Code
Section 318, as modified by Code Section 856(d)(5)) stock of any corporation, or
an  interest  in the assets  and  profits  of any other  entity,  from which the
General Partner or the  Partnership,  directly or indirectly,  derives  material
rental  income from real  property  that would be excluded from "rents from real
property" pursuant to Code Section 856(d)(2)(B).

          (d) Upon the request of the General Partner, each Limited Partner will
disclose to the General  Partner the amount of Common  Shares or other shares of
capital  stock of the General  Partner that it actually  owns or  constructively
owns and shall  further  disclose to the General  Partner any  ownership  in the
stock,  assets or net profits of any  corporation or other entity from which the
General Partner or the  Partnership,  directly or indirectly,  derives  material
rental income from real property.

                                       10
<PAGE>

          (e) Each Partner  represents  and warrants  that it is an  "accredited
investor" as defined in Rule 501  promulgated  under the  Securities  Act.  Each
Partner  represents,  warrants and agrees that it has acquired and  continues to
hold its interest in the Partnership for its own account for investment only and
not for the purpose of, or with a view toward, the resale or distribution of all
or any  part of that  interest,  nor with a view  toward  selling  or  otherwise
distributing  such interest or any part of that interest at any particular  time
or under any predetermined  circumstances.  Each Partner further  represents and
warrants that it is a  sophisticated  investor,  able and accustomed to handling
sophisticated   financial   matters   for  itself,   particularly   real  estate
investments,  and that it has a  sufficiently  high net  worth  that it does not
anticipate  a need for the funds it has invested in the  Partnership  in what it
understands to be a highly speculative and illiquid investment.

          (f) The representations  and warranties  contained in this Section 3.4
shall survive the  execution and delivery of this  Agreement by each Partner and
the dissolution, liquidation and termination of the Partnership.

          (g) Each Partner  acknowledges that no representations as to potential
profit,  distributions,  cash flows,  funds from operations or yield, if any, in
respect of the  Partnership or the General Partner have been made by any Partner
or any  employee  or  representative  or  Affiliate  of any  Partner,  and  that
projections and any other information,  including, without limitation, financial
and descriptive information and documentation,  that may have been in any manner
submitted to such Partner shall not constitute any representation or warranty of
any kind or nature, express or implied.



                            4. CAPITAL CONTRIBUTIONS;
                               ISSUANCE OF UNITS;
                                CAPITAL ACCOUNTS

          4.1      CAPITAL CONTRIBUTIONS OF THE PARTNERS.

          (a) INITIAL  CAPITAL  CONTRIBUTIONS.  At the time of the  execution of
this  Agreement,  the  Partners  shall  make or  shall  have  made  the  capital
contributions  set forth in Exhibit A to this Agreement.  The Partners shall own
Partnership  Units in the  amounts  set  forth in  Exhibit  A and  shall  have a
Percentage  Interest  in the  Partnership  as set  forth  in  Exhibit  A,  which
Percentage  Interest  shall be  adjusted  in  Exhibit A from time to time by the
General  Partner to the extent  necessary  to  reflect  accurately  redemptions,
conversions,  capital  contributions,  the  issuance of  additional  Partnership
Units, transfers of Partnership Interests permitted under Article 11, or similar
events having an effect on a Partner's Percentage Interest.  Sixty-six Thousand,
Eight Hundred and  Eighty-five  (66,885)  Partnership  Units held by the General
Partner  (representing one percent (1%) of all outstanding  Partnership Units as
of the date of the initial capital  contributions to the  Partnership)  shall be
deemed to be the General Partnership Interest.

          (b) ADDITIONAL CAPITAL CONTRIBUTIONS.

               (1) No Partner  shall be assessed  or,  except as provided for in
Sections 4.1(b)(2) below, and except for any such amounts that a Limited Partner
may be  obligated  to repay  under  Section  10.5  (withholding  provision),  be
required to contribute  additional  funds or other property to the  Partnership.
  
                                       11
<PAGE>

Any  additional  funds  or  other  property  required  by  the  Partnership,  as
determined by the General Partner in its sole discretion  ("Additional  Funds"),
may, at the option of the General  Partner  and without an  obligation  to do so
(except as provided for in Section  4.1(b)(2)),  be  contributed  by the General
Partner as additional  capital  contributions.  If and as the General Partner or
any other Partner makes  additional  capital  contributions  to the Partnership,
each such Partner shall receive additional  Partnership Units as provided for in
Section 4.2.

               (2) The  proceeds  of any and all funds  raised by or through the
General Partner through the issuance of additional shares of the General Partner
(whether  Common  Shares  or  Preferred  Shares)  shall  be  contributed  to the
Partnership as additional capital  contributions,  and in such event the General
Partner shall be issued  additional  Partnership  Units  pursuant to Section 4.2
below.  In any such case, if the proceeds so contributed are less than the gross
proceeds  of the  issuance  (i.e.,  due to any  underwriter's  discount or other
expenses  incurred in  connection  with the  issuance),  the  General  Partner's
capital  contribution  shall be deemed to equal the amount of the gross proceeds
(i.e., the net proceeds actually contributed, plus any underwriter's discount or
other  expenses  incurred,  and any such  discount or expense shall be deemed to
have been incurred on behalf of the Partnership).

          (c) RETURN OF CAPITAL  CONTRIBUTIONS.  Except as  otherwise  expressly
provided in this  Agreement,  the capital  contribution  of each Limited Partner
will be returned to that Partner  only in the manner and to the extent  provided
in Article 5 and Article 13, and no Partner may withdraw from the Partnership or
otherwise  have any  right to  demand  or  receive  the  return  of its  capital
contribution to the Partnership  (as such),  except as specifically  provided in
this  Agreement.   Under  circumstances   requiring  a  return  of  any  capital
contribution,  no Partner  shall have the right to receive  property  other than
cash,  except as specifically  provided in this  Agreement.  No Partner shall be
entitled  to  interest  on  any   capital   contribution   or  Capital   Account
notwithstanding  any  disproportion   between  the  Partners  in  their  capital
contributions  or Capital  Accounts.  Except as  specifically  provided  in this
Agreement, the General Partner shall not be liable for the return of any portion
of the  capital  contribution  of any  Limited  Partner,  and the return of such
capital contribution shall be made solely from Partnership assets.

          (d) LIABILITY OF LIMITED  PARTNERS.  No Limited Partner shall have any
further  personal  liability  to  contribute  money to, or in  respect  of,  the
liabilities or the obligations of the Partnership, nor shall any Limited Partner
be personally liable for any obligations of the Partnership, except as otherwise
provided in this Article 4 or in the Act. No Limited  Partner  shall be required
to make any  contributions  to the  capital  of the  Partnership  other than its
initial capital contribution.

          (e) NO OBLIGATIONS FOR DEFICIT CAPITAL ACCOUNTS.  If any Partner has a
deficit   balance  in  its  Capital   Account   (after   giving  effect  to  all
contributions,  distributions  and allocations for all taxable years,  including
those during any year in which a liquidation occurs), such Partner shall have no
obligation at the time of liquidation or otherwise to make any  contribution  to
the capital of the  Partnership  with respect to that  deficit,  and the deficit
shall not be  considered a debt owed to the  Partnership  or to any other Person
for any purpose.
                                       12

<PAGE>

          4.2      ISSUANCES OF ADDITIONAL PARTNERSHIP INTERESTS.

               (a)  ISSUANCES IN GENERAL.  The General  Partner is authorized to
cause  the  Partnership  to issue  such  additional  Partnership  Units or other
Partnership  Interests for any  Partnership  purpose at any time or from time to
time,  including  Units  in  one  or  more  series  of any  classes,  with  such
designations, preferences and relative, participating, optional or other special
rights,  powers and duties,  including rights, powers and duties senior to other
Partnership  Interests,  all as  shall be  determined  by the  General  Partner,
subject to California law, including,  without  limitation,  with respect to (i)
the allocations of items of Partnership income, gain, loss, deduction and credit
to each such class or series of  Partnership  Interests,  (ii) the right of each
such  class  or  series  of  Partnership   Interests  to  share  in  Partnership
distributions,  and (iii)  the  rights  of each  class or series of  Partnership
Interests  upon  dissolution  and  liquidation  of  the  Partnership,  for  such
consideration  and on such terms and  conditions as shall be  established by the
General Partner in its sole and absolute discretion, all without the approval of
any  Limited  Partners  except  to the  extent  specifically  provided  in  this
Agreement.  The General  Partner may also amend the Agreement to provide for the
issuance  of  Partnership  Units the  Redemption  Right of which will  relate to
Preferred Shares on such terms as are determined by the General Partner.

               (b) ISSUANCE TO THE GENERAL PARTNER.  In the case of the issuance
of additional  Partnership Units or other  Partnership  Interests to the General
Partner:  (i) the agreement to issue the additional  Partnership  Interests must
arise in  connection  with an issuance of or  agreement  to issue  shares of the
General Partner,  which shares have designations,  preferences and other rights,
all  such  that  the  economic  interests  are  substantially   similar  to  the
designations,  preferences  and  other  rights  of  the  additional  Partnership
Interests  that would be issued to the General  Partner in accordance  with this
Section  4.2(b),  and (ii) the  General  Partner  shall  agree to make a capital
contribution  to the  Partnership  in an amount equal to the proceeds  raised in
connection  with the  issuance of such shares of the General  Partner.  For this
purpose, if the General Partner merges with another entity,  assets of the other
entity  acquired  as a result of the merger  shall be treated as acquired by the
General  Partner in  connection  with the  "issuance"  of the shares held by the
other entities' shareholders in the surviving entity.

               (c)  ISSUANCE  OF  ADDITIONAL  SHARES.  The  General  Partner  is
explicitly  authorized to issue additional  Common Shares or Preferred Shares of
the General Partner, or rights, options, warrants or convertible or exchangeable
securities  containing the right to subscribe for or purchase  Common Shares and
Preferred Shares ("New Securities") and in connection with the issuance: (i) the
General  Partner  shall  contribute  the proceeds  from the issuance of such New
Securities  and from the exercise of rights  contained in such New Securities to
the  Partnership  or agree as  provided  in  Section  7.6 at the  option  of the
Partnership to make such a  contribution,  and (ii) upon the  contribution,  the
Partnership shall issue to the General Partner, Partnership Interests or rights,
options,  warrants or convertible or exchangeable  securities of the Partnership
having  designations,  preferences and other rights,  all such that the economic
interests  are  substantially  similar  to  those  of  the  New  Securities.  In
connection  with the issuance of Partnership  Interests  that are  substantially
similar to New Securities,  the General Partner is authorized to modify or amend
                                       13
<PAGE>

the  distributions  or  allocations  under this  Agreement  solely to the extent
necessary  to give  effect to the  designations,  preferences  and other  rights
pertaining to such Partnership Interests.

               (d)  FORFEITURE  OF SHARES.  If the  Partnership  or the  General
Partner  acquires  Common  Shares as a result of the  forfeiture  of such Common
Shares under a restricted or similar share plan,  then the General Partner shall
cause the  Partnership to cancel that number of  Partnership  Units equal to the
number of Common  Shares so  acquired,  and, if the  Partnership  acquired  such
Common Shares,  it shall transfer such Common Shares to the General  Partner for
cancellation.

               (e) ISSUANCE PURSUANT TO OPTION PLANS.

                    (1) Upon the exercise of an option to acquire  Common Shares
of the  General  Partner  that is  granted  by the  Partnership  or the  General
Partner, the optionee shall transfer the exercise price to the Partnership,  and
the Partnership shall purchase from the General Partner for fair market value at
the time of exercise the number of Common  Shares with respect to which  options
were  exercised  and shall  transfer  the shares to the  optionee.  The  General
Partner shall  immediately  transfer the proceeds received for the Common Shares
to the  Partnership  in  exchange  for a number of Units  equal to the number of
Common Shares sold.

                    (2) The General Partner shall cause the Partnership to issue
Partnership  Units of the  Partnership  upon the  exercise by any optionee of an
option to acquire  Partnership Units granted by the Partnership  pursuant to the
Option Plans in accordance with the terms of the Option Plans. Partnership Units
so issued shall  represent  Limited  Partnership  Interests.  

     4.3 NO PREEMPTIVE  RIGHTS.  Except to the extent  expressly  granted by the
General  Partner  pursuant  to a written  agreement,  no Person  shall  have any
preemptive,  preferential  or other similar right with respect to (a) additional
capital  contributions or loans to the  Partnership,  or (b) issuance or sale of
any Partnership Units.

     4.4 CAPITAL  ACCOUNTS.  A separate  capital  account (a "Capital  Account")
shall  be  established  and  maintained  for each  Partner  in  accordance  with
Regulations  Section  1.704-1(b)(2)(iv)  and the  terms of this  Agreement.  The
General  Partner is authorized to revalue the property of the Partnership to its
fair market value (as determined by the General Partner, in its sole discretion,
and  taking  into  account  Section  7701(g)  of the  Code) in  accordance  with
Regulations  Section  1.704-1(b)(2)(iv)(f).  When the Partnership's  property is
revalued by the General  Partner,  the Capital Accounts of the Partners shall be
adjusted in accordance with Regulations Section 1.704-1(b)(2)(iv)(f) and (g).

     4.5 GENERAL  PARTNER LOANS OR FUNDING.  The General  Partner may, or to the
extent the General Partner enters into a "Funding Debt" (i.e., any debt incurred
by or on behalf of the General Partner for the purpose of providing funds to the
Partnership),   the  General  Partner  shall,   lend  Additional  Funds  to  the
Partnership  or  contribute  the  funds  to the  Partnership  for a  Partnership
Interest paying a preferred return (a "General Partner Funding"). If the General
  
                                       14
<PAGE>

Partner  enters into such a Funding  Debt,  the  General  Partner  Funding  will
consist of the  proceeds  from such  Funding Debt and if the funds are loaned to
the  Partnership,  the loan will be on the same terms and conditions,  including
interest rate, repayment schedule and costs and expenses, incurred in connection
with such Funding Debt,  and in the case of a contribution  to the  Partnership,
the preferred  partnership interest will substantially  reflect the terms of the
Funding  Debt.  Otherwise,  any General  Partner  Funding made  pursuant to this
Section  4.5  shall  be on  terms  and  conditions  no  less  favorable  to  the
Partnership  than would be available to the Partnership from any third party. If
a Funding Debt or debt issued by the  Partnership  is comprised,  in whole or in
part, of debt convertible into or exchangeable for Common Shares or other equity
interests in the General  Partner and any portion of such debt is converted into
or exchanged for Common Shares,  the General  Partner shall have the right,  but
not the  obligation,  to convert the  equivalent  amount of the General  Partner
Funding into additional Partnership Interests.

     4.6 LOANS BY THIRD PARTIES.  The  Partnership may incur debt, or enter into
other similar credit,  guarantee,  financing or refinancing arrangements for any
purpose  (including,   without  limitation,   in  connection  with  any  further
acquisition of properties)  from any Person that is not the General Partner upon
such terms as the General  Partner  determines  appropriate;  provided that, the
Partnership shall not incur any debt under which a breach,  violation or default
would be deemed to occur by virtue of the  transfer of any  Limited  Partnership
Interest.



                                5. DISTRIBUTIONS

     5.1 REQUIREMENT AND CHARACTERIZATION OF DISTRIBUTIONS.  The General Partner
shall,  commencing in 1998, distribute at least quarterly an amount equal to all
Available  Cash  generated  by the  Partnership  during such  quarter or shorter
period to the  Partners  who are  Partners on the  Partnership  Record Date with
respect to such quarter or shorter  period (i) first,  with respect to any class
of Partnership  Interests  issued  pursuant to Section 4.2 that is entitled to a
preference over other  Partnership  Units on the  distribution of Available Cash
(and among such classes in order of the  preferences  designated  between  those
classes, and pro rata within each such class), and (ii) then, in accordance with
their respective  Percentage Interests on such Partnership Record Date; provided
that in no event may a Redeeming  Partner  receive a  distribution  of Available
Cash  with  respect  to a  Unit  if  such  Partner  is  entitled  to  receive  a
distribution  with  respect  to a Common  Share  for  which  such  Unit has been
redeemed or exchanged.  It will be the policy of the Partnership,  commencing in
1998,  to  make  distributions  per  Unit  that  are  equal  to  the  per  share
distributions made by the General Partner with respect to its Common Shares, and
in any case the per Unit and per share  distributions  will be equal  during the
Partnership  Years 1998,  1999,  and 2000.  The General  Partner shall make such
efforts,  as it  determines  in its sole and absolute  discretion,  to cause the
Partnership  to distribute its operating cash flow in a manner that would ensure
that such  distributions  are treated by the Limited Partners as "operating cash
flow distributions" within the meaning of Regulations Section 1.707-4(b)(2).

     5.2  AMOUNTS  WITHHELD.  All amounts  withheld  pursuant to the Code or any
provisions of any state,  local or foreign tax law and Section 10.5 with respect
to any allocation, payment or distribution to the General Partner or any Limited
                                       15
<PAGE>

Partners or  Assignees  shall be treated as amounts  distributed  to the General
Partner or such Limited  Partners or  Assignees  pursuant to Section 5.1 for all
purposes under this Agreement.

     5.3  DISTRIBUTIONS  UPON  LIQUIDATION.  Proceeds  from  any  sale or  other
disposition of all or  substantially  all of the assets of the  Partnership or a
related series of  transactions  that,  taken  together,  results in the sale or
other  disposition of all or substantially  all of the assets of the Partnership
shall be distributed to the Partners in accordance with Section 13.2.

     5.4  DISTRIBUTIONS  IN KIND. No Partner has any right to demand and receive
property  other than cash. The General  Partner may  determine,  in its sole and
absolute  discretion,  to  make  a  distribution  in  kind  to the  Partners  of
Partnership assets, and such assets shall be distributed in such a fashion as to
ensure that the fair market value is  distributed  and  allocated in  accordance
with Articles 5 and 6.

     5.5  REIT  DISTRIBUTION  REQUIREMENTS.   Notwithstanding  anything  to  the
contrary in this  Agreement,  the General  Partner may cause the  Partnership to
distribute  amounts  sufficient to enable the General Partner to pay shareholder
dividends  that will  allow the  General  Partner  to (i) meet its  distribution
requirement for qualification as a REIT as set forth in Section  857(a)(1)of the
Code and (ii) avoid any federal  income or excise tax  liability  imposed by the
Code.



                                 6. ALLOCATIONS

     6.1 ALLOCATION OF PROFIT AND LOSS.

          (a) GENERAL.  Except as otherwise set forth in this Agreement,  Profit
and Loss and items of income, gain, expense, or loss of the Partnership for each
fiscal  year of the  Partnership  shall  be  allocated  among  the  Partners  in
accordance with their respective  Percentage  Interests.  The provisions of this
Section 6.1 shall be amended appropriately in the event that the General Partner
causes the  Partnership to issue Units with different  preferences or redemption
rights.

          (b)    NONRECOURSE    DEDUCTIONS   AND   MINIMUM   GAIN    CHARGEBACK.
Notwithstanding any provision to the contrary:

               (i)  any  expense  of  the  Partnership  that  is a  "nonrecourse
          deduction"  within the meaning of  Regulations  Section  1.704-2(b)(1)
          shall  be  allocated  in  accordance  with  the  Partners'  respective
          Percentage Interests,

               (ii)  any  expense  of  the   Partnership   that  is  a  "partner
          nonrecourse  deduction"  within  the  meaning of  Regulations  Section
          1.704-2(i)(2)  shall  be  allocated  in  accordance  with  Regulations
          Section 1.704-2(i)(l),

               (iii) if there is a net decrease in  "partnership  minimum  gain"
          within the meaning of  Regulations  Section  1.704-2(g)(1)  that would
          subject a Partner to a "minimum gain chargeback" within the meaning of
          Regulations Section 1.704-2(f) for any Partnership taxable year, items
          of gain and income shall be allocated among the Partners in accordance
          with (to the minimum extent allowable)  Regulations Section 1.704-2(f)
          and the ordering rules  contained in Regulations  Section  1.704-2(j),
          and

                                       16
<PAGE>

               (iv) if there is a net decrease within the meaning of Regulations
          Section  1.704-2(i)(4)  in "partner  nonrecourse  debt  minimum  gain"
          within the meaning of  Regulations  Section  1.704-2(i)(5)  that would
          subject a Partner to a minimum  gain  chargeback  for any  Partnership
          taxable  year,  items of gain and income shall be allocated  among the
          Partners  in  accordance  with  (to  the  minimum  extent   allowable)
          Regulations Section  1.704-2(i)(4) and the ordering rules contained in
          Regulations Section 1.704-2(j).

A Partner's  "interest in partnership  profits" for purposes of determining  its
share of the nonrecourse  liabilities of the  Partnership  within the meaning of
Regulations Section 1.752-3(a)(3) shall be such Partner's Percentage Interest.

          (c) QUALIFIED INCOME OFFSET. If a Partner receives in any taxable year
an adjustment, allocation, or distribution described in subparagraphs (4),(5) or
(6) of  Regulations  Section  1.704(b)(2)(ii)(d)  that  causes  or  increases  a
negative balance in such Partner's  Capital Account that exceeds the sum of such
Partner's  share of  "partnership  minimum gain" and "partner  nonrecourse  debt
minimum gain," as determined in accordance with Regulations  Sections 1.704-2(g)
and 1.704-2(i),  such Partner shall be allocated specially for such taxable year
(and, if necessary,  later taxable  years) items of income and gain in an amount
and manner  sufficient to eliminate  such negative  Capital  Account  balance as
quickly as possible as provided in Regulations Section 1.704-1(b)(2)(ii)(d).

          (d) CAPITAL ACCOUNT DEFICITS. Loss shall not be allocated to a Partner
to the extent that such  allocation  would cause (or increase) a deficit in such
Partner's  Capital  Account (after  reduction to reflect the items  described in
Regulations Section  1.704-1(b)(2)(ii)(d)(4),  (5) and (6)) to exceed the sum of
such  Partner's  shares  of  "partnership  minimum  gain"  (Regulations  Section
1.704-2(g)(1)) and "partner  nonrecourse debt minimum gain" (Regulations Section
1.704-2(i)(5)).  Any Loss in excess of that limitation shall be allocated to the
General Partner.

          (e) ALLOCATIONS  UPON CHANGES IN PARTNERSHIP  INTERESTS.  If a Partner
transfers  any part or all of its  Partnership  Interest or upon  changes in the
outstanding  Partnership  Interests  (such  as the  issuance  or  redemption  of
Partnership  Interests),  the distributive shares of the various items of Profit
and Loss and other items attributable to those Partnership  Interests  allocable
among the Partners during such fiscal year of the Partnership shall be allocated
between the transferor and the transferee Partner or between the persons treated
a Partners  prior to such event and those treated as Partners after the event as
the  General  Partner  deems  appropriate  to take into  account  their  varying
interests  during that period (which may include interim  closings of the books,
prorations  of items,  using daily,  weekly,  monthly,  or  quarterly  proration
periods, etc.). The General Partner, in its sole discretion, shall determine the
method  or  methods  to be used to  allocate  the  distributive  shares of items
between the Partners.  In addition,  allocations of items among the Partners may
be changed by agreement  between the General  Partner and the  affected  Limited
Partner or Limited  Partners,  without amendment of this Agreement or consent of
the other Limited Partners.

          (f)  DEFINITION OF PROFIT AND LOSS.  "Profit" and "Loss" and any items
of  income,  gain,  expense,  or loss  referred  to in this  Agreement  shall be
determined by the General  Partner in accordance with the  Partnership's  "book"

                                       17
<PAGE>

income  computed  under federal  income tax  accounting  principles  taking into
account Regulations Section  1.704-1(b)(2)(iv) and the effect of any revaluation
of   Partnership    property   in   accordance    with    Regulations    Section
1.704-1(b)(2)(iv)(f),  except that  Profit and Loss shall not  include  items of
income, gain, expense and loss that are specifically allocated, such as pursuant
to Section 6.1(b) or 6.1(c).

          (g) TAX ALLOCATIONS.  All allocations of income,  Profit,  gain, Loss,
and expense (and all  components of those items) for federal income tax purposes
shall be allocated among the Partners in the same manner as such  allocations of
"book" income,  gain,  loss or deduction are allocated  pursuant to this Section
6.1, except as otherwise  required by Section 704(c) of the Code and Regulations
Section 1.704-1(b)(4). The General Partner shall have the authority to elect the
method to be used by the Partnership for allocating  items of income,  gain, and
expense as required  by Section  704(c) of the Code and such  election  shall be
binding on all Partners.

          (h) CURATIVE ALLOCATION.  The allocations set forth in Section 6.1(b),
(c) and (d) (the "Regulatory  Allocations")  are intended to comply with certain
regulatory  requirements,  including the  requirements  of  Regulations  Section
1.704-1(b) and 1.704-2. Notwithstanding the provisions of Section 6.1(b),(c) and
(d), the Regulatory  Allocations shall be taken into account in allocating other
items of income,  gain,  loss and  deduction  among the Partners so that, to the
extent  possible,  the net  amount of such  allocations  of other  items and the
Regulatory  Allocations  to each  Partner  shall be equal to the net amount that
would have been allocated to each such Partner if the Regulatory Allocations had
not occurred.  In applying this Section 6.1(h), a Partner's share of partnership
minimum  gain and partner  nonrecourse  debt minimum gain (within the meaning of
Regulations  Sections  1.704-2(g) and 1.704-2(i),  respectively) at any point in
time  shall be  treated  as an amount of  income or gain that has  already  been
allocated to the Partner.

          6.2 SUBSTANTIAL ECONOMIC EFFECT. It is the intent of the Partners that
the allocations of Profit and Loss and items of income,  gain,  expense and loss
under the Agreement have substantial  economic effect (or be consistent with the
Partners'  interests in the  Partnership in the case of the allocation of losses
attributable  to  nonrecourse  debt) within the meaning of Section 704(b) of the
Code as  interpreted  by the related  Regulations.  Article 6 and other relevant
provisions of this Agreement  shall be interpreted in a manner  consistent  with
that intent.



                    7. MANAGEMENT AND OPERATIONS OF BUSINESS

          7.1      MANAGEMENT.

               (a)  POWERS OF GENERAL  PARTNER.  Except as  otherwise  expressly
provided in this Agreement,  all management powers over the business and affairs
of the Partnership are 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. Notwithstanding anything
to the contrary in this Agreement, the General Partner may not be removed by the
  
                                       18
<PAGE>

Limited  Partners.  In  addition  to the powers  that are granted to the General
Partner under any other provision of this  Agreement,  the General Partner shall
have full power and authority to do all things deemed  necessary or desirable by
it to conduct the business of the Partnership,  to exercise all powers set forth
in  Section  3.2 and to  effectuate  the  purposes  set  forth in  Section  3.1,
including, without limitation:

               (1) the making of any  expenditures,  the lending or borrowing of
          money (including,  without limitation, making prepayments on loans and
          borrowing money to permit the Partnership to make distributions to its
          Partners in such  amounts as will permit the General  Partner (so long
          as the General  Partner  qualifies  as a REIT) to avoid the payment of
          any federal income tax  (including,  for this purpose,  any excise tax
          pursuant to Section 4981 of the Code) and to make distributions to its
          shareholders sufficient to permit the General Partner to maintain REIT
          status),  the  assumption or guarantee of, or other  contracting  for,
          indebtedness  and other  liabilities,  the  issuance of  evidences  of
          indebtedness  (including  the  securing of same by  mortgage,  deed of
          trust or other lien or  encumbrance on the  Partnership's  assets) and
          the incurring of any obligations it deems necessary for the conduct of
          the activities of the Partnership;  provided, that all such borrowing,
          incurrence of debt and prepayments shall be subject to the limitations
          set forth in Sections 4.5 and 4.6;

               (2) the making of tax, regulatory and other filings, or rendering
          of periodic or other reports to  governmental or other agencies having
          jurisdiction over the business or assets of the Partnership;

               (3) the acquisition,  disposition,  sale,  conveyance,  mortgage,
          pledge,  encumbrance,  hypothecation,  contribution or exchange of any
          assets of the  Partnership  or the merger or other  combination of the
          Partnership  with or into another  entity on such terms as the General
          Partner deems proper; provided,  however, that: (i) no sale, exchange,
          disposition  or other  transfer  of any  property  of the  Partnership
          contributed  on January 2, 1997 shall occur prior to December 31, 1998
          without the prior  written  consent of the General  Partner;  (ii) the
          sale of all or substantially  all of the assets of the Partnership and
          a Business  Combination  (as defined in Section  8.7(a)) shall require
          the consent set forth in Section  8.7(b);  and (iii)  certain sales of
          any  Designated  Property  (as defined in Section 8.8) may require the
          consent of specified persons as set forth in Section 8.8.

               (4) the use of the assets of the Partnership (including,  without
          limitation, cash on hand) for any purpose consistent with the terms of
          this  Agreement  and on any  terms  it sees  fit,  including,  without
          limitation,  the  financing  of the conduct of the  operations  of the
          General  Partner,   the  Partnership  or  any  of  the   Partnership's
          Subsidiaries,  the lending of funds to other  Persons  (including  the
          Partnership's  Subsidiaries)  and the repayment of  obligations of the
          Partnership and its  Subsidiaries and any other Person in which it has
          an equity  investment and the making of capital  contributions  to its
          Subsidiaries,  the holding of any real, personal and mixed property of
          the  Partnership  in the name of the  Partnership  or in the name of a
          nominee or trustee (subject to Section 7.11),  the creation,  by grant
          or otherwise,  of easements or servitudes,  and the performance of any
          and  all  acts  necessary  or  appropriate  to  the  operation  of the
          Partnership  assets including,  without  limitation,  applications for
          rezoning, objections to rezoning,  constructing,  altering, improving,
          repairing,   renovating,   rehabilitating,   razing,   demolishing  or
          condemning any improvements or property of the Partnership;

                                       19
<PAGE>

               (5) the negotiation, execution, and performance of any contracts,
          conveyances or other  instruments  (including  with  Affiliates of the
          Partnership  to the extent  provided in Section  7.7) that the General
          Partner   considers   useful  or  necessary  to  the  conduct  of  the
          Partnership's   operations  or  the   implementation  of  the  General
          Partner's powers under this Agreement,  including, without limitation,
          the  execution  and  delivery of leases on behalf of or in the name of
          the Partnership  (including the lease of Partnership  property for any
          purpose and without limit as to the term of the lease,  whether or not
          such term  (including  renewal  terms) shall extend beyond the date of
          termination  of the  Partnership  and  whether  or not the  portion so
          leased is to be occupied by the lessee or, in turn, subleased in whole
          or in part to others);

               (6) the opening and closing of bank  accounts,  the investment of
          Partnership  funds in  securities,  certificates  of deposit and other
          instruments,  and  the  distribution  of  Partnership  cash  or  other
          Partnership assets in accordance with this Agreement;

               (7)  the   establishment   of  one  or  more   divisions  of  the
          Partnership,   the   selection  and  dismissal  of  employees  of  the
          Partnership or the General  Partner  (including,  without  limitation,
          employees  having  titles  such  as  "president,"   "vice  president,"
          "secretary"  and  "treasurer"),  and the  engagement  and dismissal of
          agents,  outside  attorneys,   accountants,   engineers,   appraisers,
          consultants,  contractors  and  other  professionals  on behalf of the
          General  Partner or the  Partnership  and the  determination  of their
          compensation and other terms of employment or hiring;

               (8) the  maintenance  of such  insurance  for the  benefit of the
          Partnership and the Partners as it deems necessary or appropriate;

               (9) the formation of, or  acquisition  of an interest in, and the
          contribution   of  property   to,  any  further   limited  or  general
          partnerships,  joint ventures,  limited  liability  companies or other
          relationships that it deems desirable (including,  without limitation,
          the acquisition of interests in, and the  contribution of property to,
          its  Subsidiaries  and any  other  Person  in which  it has an  equity
          investment from time to time);

               (10)  the  control  of  any  matters  affecting  the  rights  and
          obligations  of the  Partnership,  including the conduct of litigation
          and the  incurring of legal  expense and the  settlement of claims and
          litigation,  and the indemnification of any Person against liabilities
          and contingencies to the extent permitted by law;

               (11)  the  undertaking  of any  action  in  connection  with  the
          Partnership's direct or indirect investment in its Subsidiaries or any
          other Person (including,  without limitation, the contribution or loan
          of funds by the Partnership to such Persons);

               (12)  the   determination   of  the  fair  market  value  of  any
          Partnership  property distributed in kind using such reasonable method
          of valuation as it may adopt;

               (13) the issuance of Partnership Units to any Subsidiary that may
          be  necessary  for  such  Subsidiary  to  satisfy  such   Subsidiary's
          obligations  under the Option  Plans,  in exchange for the transfer to
                                       20
<PAGE>

          the Partnership by such  Subsidiary of the price per Partnership  Unit
          required by the Option Plans to be paid by Subsidiaries;

               (14) the management,  operation,  leasing,  landscaping,  repair,
          alteration,   demolition  or  improvement  of  any  real  property  or
          improvements  owed  by  the  Partnership  or  any  Subsidiary  of  the
          Partnership;

               (15)  the   exercise,   directly  or   indirectly,   through  any
          attorney-in-fact  acting under a general or limited power of attorney,
          of any right, including the right to vote, appurtenant to any asset or
          investment held by the Partnership;

               (16) the  exercise  of any of the powers of the  General  Partner
          enumerated in this  Agreement on behalf of or in  connection  with any
          Subsidiary  of the  Partnership  or any  other  Person  in  which  the
          Partnership  has a direct or indirect  interest,  or jointly  with any
          such Subsidiary or other Person;

               (17) the  enforcement of any rights against any Partner  pursuant
          to representations,  warranties, covenants and indemnities relating to
          such Partner's contribution of property or assets to the Partnership;

               (18) the  exercise  of any of the powers of the  General  Partner
          enumerated  in this  Agreement  on behalf  of any  Person in which the
          Partnership does not have an interest pursuant to contractual or other
          arrangements with such Person; and

               (19) the  making,  execution  and  delivery of any and all deeds,
          leases,  notes,  deeds to  secure  debt,  mortgages,  deeds of  trust,
          security agreements,  conveyances,  contracts, guarantees, warranties,
          indemnities,  waivers,  releases or legal instruments or agreements in
          writing  necessary  or  appropriate  in the  judgment  of the  General
          Partner  for the  accomplishment  of any of the powers of the  General
          Partner enumerated in this Agreement.

          (b) NO  APPROVAL  REQUIRED  FOR  ABOVE  POWERS.  Each  of the  Limited
Partners agrees that the General  Partner is authorized to execute,  deliver and
perform  the  above-mentioned  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  (except as  otherwise
specifically  provided  in  paragraph  (a)(3) of  Section  7.1),  the Act or any
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) INSURANCE. The General Partner may cause the Partnership to obtain
and maintain  casualty,  liability and other  insurance on the properties of the
Partnership and liability  insurance for the Indemnities under this Agreement in
such amounts as the General Partner, in its sole and absolute discretion,  deems
appropriate and reasonable from time to time.

                                       21
<PAGE>

          (d)  WORKING  CAPITAL  RESERVES.  The  General  Partner  may cause the
Partnership to establish and maintain  working capital  reserves in such amounts
as the General Partner, in its sole and absolute  discretion,  deems appropriate
and reasonable from time to time.

          (e) NO OBLIGATIONS TO CONSIDER TAX  CONSEQUENCES TO LIMITED  PARTNERS.
In exercising its authority under this  Agreement,  the General Partner may, but
shall be under no obligation to, take into account the tax  consequences  to any
Partner  (including  the General  Partner) of any action taken (or not taken) by
any of them. The General Partner and the Partnership shall not have liability to
a Limited  Partner  for  monetary  damages or  otherwise  for losses  sustained,
liabilities  incurred  or  benefits  not  derived  by such  Limited  Partner  in
connection with such  decisions,  provided that the General Partner has acted in
good faith and pursuant to its authority under this Agreement.

     7.2 RESTRICTIONS ON GENERAL  PARTNER'S  AUTHORITY.  The General Partner may
not, without the written consent of all of the Limited Partners, take any action
in contravention of this Agreement, including, without limitation:

          (a) taking any action  that would make it  impossible  to carry on the
ordinary  business  of the  Partnership,  except as  otherwise  provided in this
Agreement; or

          (b)  possessing  Partnership  property,  or  assigning  any  rights in
specific  Partnership  property,  for other than a Partnership purpose except as
otherwise provided in this Agreement.

In addition,  without the consent of any adversely affected Limited Partner, the
General  Partner may not perform any act that would subject a Limited Partner to
liability as a general partner in any jurisdiction or any other liability except
as provided in this Agreement or under the Act.

     7.3 CERTIFICATE OF LIMITED  PARTNERSHIP.  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 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 California and each other  jurisdiction in which the Partnership
may elect to do  business  or own  property.  Subject  to the  terms of  Section
8.5(a)(4) (Rights of Limited Partners to certain business records),  the General
Partner shall not be required, before or after filing, to deliver or mail a copy
of the  Certificate,  as it may be amended or restated from time to time, to any
Limited Partner.  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  California  and any other
jurisdiction in which the Partnership may elect to do business or own property.

     7.4 RESPONSIBILITY FOR EXPENSES.

          (a) NO  COMPENSATION.  Except  as  provided  in this  Section  7.4 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.

                                       22
<PAGE>

          (b)  RESPONSIBILITY  FOR OWNERSHIP AND OPERATION  EXPENSES.  Except as
provided in Section 7.13, the Partnership shall be responsible for and shall pay
all expenses  relating to the  Partnership's  ownership  of its assets,  and the
operation of, or for the benefit of, the  Partnership,  and the General  Partner
shall be  reimbursed  on a monthly  basis,  or such other  basis as the  General
Partner may determine in its sole and absolute  discretion,  for all expenses it
incurs relating to the  Partnership's  ownership of its assets and the operation
of, or for the benefit of, the Partnership. If certain expenses are incurred for
the  benefit of the  Partnership  and other  entities,  those  expenses  will be
allocated  to the  Partnership  and the other  entities  in such a manner as the
General Partner in its sole and absolute  discretion  deems fair and reasonable.
Such  reimbursements  shall be in addition to any  reimbursement  to the General
Partner as a result of indemnification pursuant to Section 7.8. All payments and
reimbursements  under  this  Agreement  represent  expenses  of the  Partnership
incurred on its behalf, and not expenses of the General Partner, and shall be so
characterized for federal income tax purposes.

          (c) RESPONSIBILITY  FOR ORGANIZATION OR ISSUANCE  EXPENSES.  Except as
provided in Section 7.13, the Partnership shall be responsible for and shall pay
(or shall reimburse the General Partner for) all expenses  incurred  relating to
the organization of the Partnership (including expenses relating to the issuance
of Units),  as well as other costs of capital  raising or  property  acquisition
incurred  by the  Partnership  or  General  Partner  with  respect  to  funds or
properties  acquired by the  Partnership  or by the  General  Partner for prompt
contribution  to the  Partnership,  all of which  expenses are considered by the
Partners to constitute expenses of, and for the benefit of, the Partnership.

     7.5  PURCHASES  OF SHARES BY THE GENERAL  PARTNER.  If the General  Partner
purchases shares in connection with a share repurchase or similar program or for
the  purpose of  delivering  those  shares to satisfy  an  obligation  under any
dividend reinvestment or equity purchase program adopted by the General Partner,
any employee  equity purchase plan adopted by the General Partner or any similar
obligation or arrangement  undertaken by the General Partner in the future,  the
purchase  price  paid by the  General  Partner  for those  shares  and any other
expenses  incurred by the General Partner in connection with that purchase shall
be  considered  expenses of the  Partnership  and shall be  reimbursable  to the
General  Partner,  subject  to the  conditions  that:  (i) if those  shares  are
subsequently  sold by the General Partner,  the General Partner shall pay to the
Partnership  any  proceeds  received  by the General  Partner  for those  shares
(provided  that a transfer of shares for  Partnership  Units pursuant to Section
8.6 would not be considered a sale for this purpose); and (ii) if the shares are
not  retransferred  by the  General  Partner  within  thirty (30) days after the
purchase  of the shares,  the General  Partner  shall cause the  Partnership  to
cancel a number of  Partnership  Units held by the General  Partner equal to the
number of shares purchased.

     7.6 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  and  disposition  of  Partnership
Interests  as a General  Partner or Limited  Partner and the  management  of the
business  of the  Partnership,  the  General  Partner's  operation  as a  public
  
                                       23
<PAGE>

reporting company with securities  registered under the Securities  Exchange Act
of 1934,  as  amended,  its  operation  as a REIT,  and such  activities  as are
incidental  to those  activities.  The General  Partner shall not own any assets
other  than  Partnership  Interests,  the  stock of an  entity  qualifying  as a
"qualified  REIT  subsidiary"  under  Section  856(i)  of the  Code,  all of the
interests in a limited liability company, debts owed by the Partnership and such
bank  accounts or similar  instruments  as it deems  necessary  to carry out its
responsibilities   contemplated   under  this  Agreement  and  the  Articles  of
Incorporation.  Notwithstanding  the  foregoing,  the General  Partner  shall be
permitted to own,  directly or through  Subsidiaries,  interests in  Partnership
properties that do not exceed 1% of the economic  interest of any property,  and
if appropriate for regulatory,  tax, or other purposes, the General Partner also
may  own,  directly  or  through  Subsidiaries,  interests  in  assets  that the
Partnership  otherwise  could  acquire,  if the  General  Partner  grants to the
Partnership the option to acquire the assets within a period not to exceed three
years in exchange  for the number of  Partnership  Units that would be issued if
the  Partnership  acquired the assets at the time of  acquisition by the General
Partner.  The General  Partner and Affiliates of the General Partner may acquire
Limited Partnership  Interests and shall be entitled to exercise all rights of a
Limited Partner relating to such Limited Partnership  Interests.  The provisions
of this Section 7.6 shall not be construed  to limit the outside  activities  of
Affiliates of the General Partner.

     7.7 CONTRACTS WITH AFFILIATES.

          (a) LOANS.  The Partnership may lend or contribute to its Subsidiaries
or other  Persons 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 or  benefit in favor of any  Subsidiary  or any other
Person.

          (b) TRANSFERS OF ASSETS.  The Partnership may transfer assets to joint
ventures,  other partnerships,  corporations or other business entities in which
it is or by so transferring the assets becomes a participant upon such terms and
subject to such conditions consistent with this Agreement and applicable law.

          (c) CONTRACTS WITH GENERAL PARTNER.  Except as expressly  permitted by
this  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 on
terms that are fair and reasonable and no less favorable to the Partnership than
would be obtained from an unaffiliated third party.

          (d)  EMPLOYEE  BENEFIT  PLANS.  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 of the  Partnership's  Subsidiaries,
including any such plan that requires the  Partnership,  the General  Partner or
any of the Partnership's  Subsidiaries to issue or transfer Partnership Units to
employees.
                                       24
<PAGE>

          (e) CONFLICT AVOIDANCE ARRANGEMENTS.  The General Partner is expressly
authorized to enter into, in the name and on behalf of the Partnership,  a right
of first opportunity 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.

     7.8 INDEMNIFICATION.

          (a) GENERAL. Except as provided in Section 7.13, the Partnership shall
indemnify an Indemnitee  from and against any and all losses,  claims,  damages,
liabilities,  joint or several,  expenses  (including  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 as set forth
in this Agreement in which any  Indemnitee may be involved,  or is threatened to
be involved, as a party or otherwise, unless it is established that: (i) the act
or  omission of the  Indemnitee  was  material to the matter  giving rise to the
proceeding and either was committed in bad faith or was the result of active and
deliberate  dishonesty;  (ii)  the  Indemnitee  actually  received  an  improper
personal  benefit in money,  property or  services;  or (iii) in the case of any
criminal proceeding, the Indemnitee had reasonable cause to believe that the act
or omission was unlawful.  The termination of any proceeding by judgment,  order
or settlement does not create a presumption that the Indemnitee did not meet the
requisite  standard of conduct set forth in this Section 7.8(a). The termination
of any  proceeding  by  conviction  or  upon a plea of  nolo  contendere  or its
equivalent,  or an entry of an order of probation  prior to judgment,  creates a
rebuttable presumption that the Indemnitee did not meet the requirement standard
of conduct set forth in this Section  7.8(a).  Any  indemnification  pursuant to
this  Section  7.8  shall be made  only out of the  assets  of the  Partnership.
Notwithstanding the foregoing provisions,  the General Partner shall be entitled
to  reimbursement  by the Partnership for any amounts paid by it in satisfaction
of indemnification  obligations owed by the General Partner to present or former
directors of the General Partner, as provided for in or pursuant to the Articles
of   Incorporation   and  By-Laws  of  the   General   Partner  or  any  similar
indemnification agreements between the General Partner and such persons.

          (b) IN ADVANCE OF FINAL  DISPOSITION.  Except as  provided  in Section
7.13,  reasonable  expenses  incurred  by an  Indemnitee  who  is a  party  to a
proceeding may be paid or reimbursed by the  Partnership in advance of the final
disposition of the proceeding  upon receipt by the  Partnership of (a) a written
affirmation  by the  Indemnitee of the  Indemnitee's  good faith belief that the
standard  of  conduct  necessary  for  indemnification  by  the  Partnership  as
authorized in this Section 7.8 has been met, and (b) a written undertaking by or
on  behalf of the  Indemnitee  to repay the  amount  if it shall  ultimately  be
determined that the standard of conduct was not met.

          (c) NO EFFECT ON OTHER RIGHTS.  The  indemnification  provided by this
Section 7.8 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,  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 Indemnitee is indemnified.
  
                                       25
<PAGE>

          (d) INSURANCE. The Partnership may purchase and maintain insurance, on
behalf of the Indemnities and such other Persons as the General Partner shall in
its sole and absolute  discretion  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 or under applicable law.

          (e)  EMPLOYEE  BENEFIT  PLANS.  For  purposes of this Section 7.8, the
Partnership  shall  be  deemed  to have  requested  an  Indemnitee  to  serve as
fiduciary of an employee  benefit plan  whenever  the  performance  by it of its
duties to the Partnership also imposes duties on, or otherwise involves services
by, it to the plan or participants or  beneficiaries  of the plan;  excise taxes
assessed on an Indemnitee  with respect to an employee  benefit plan pursuant to
applicable law shall constitute fines within the meaning of Section 7.8(a);  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  participants  and  beneficiaries of the plan shall be
deemed to be for a purpose  that is not  opposed  to the best  interests  of the
Partnership.

          (f) NO PERSONAL  LIABILITY  FOR LIMITED  PARTNERS.  In no event may an
Indemnitee  subject the Limited Partners to personal  liability by reason of the
indemnification provisions set forth in this Agreement.

          (g)  INTERESTED  TRANSACTIONS.  An  Indemnitee  shall  not  be  denied
indemnification  in  whole  or in  part  under  this  Section  7.8  because  the
Indemnitee  had an  interest  in the  transaction  with  respect  to  which  the
indemnification  applies if the transaction was otherwise permitted by the terms
of this Agreement.

          (h) BINDING  EFFECT.  The  provisions  of this Section 7.8 are for the
benefit of the Indemnities,  their heirs, successors, assigns and administrators
and  shall  not be deemed to create  any  rights  for the  benefit  of any other
Persons.

          (i) EFFECT OF AMENDMENT. Any amendment, modification or repeal of this
Section 7.8 or any provision of this  Agreement  shall be  prospective  only and
shall not in any way affect the rights of an  Indemnitee  under this Section 7.8
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.

     7.9 LIABILITY OF THE GENERAL PARTNER.

          (a)  GENERAL.  Notwithstanding  anything to the  contrary set forth in
this Agreement,  the General Partner shall not be liable for monetary damages to
the Partnership, any Partners or any Assignees for losses sustained, liabilities
incurred or benefits not derived as a result of errors in judgment or of any act
or omissions if the General Partner acted in good faith.

          (b) NO  OBLIGATION  TO CONSIDER  INTERESTS  OF LIMITED  PARTNERS.  The
Limited  Partners  expressly  acknowledge  that the General Partner is acting on
behalf of the Partnership and the General Partner's  shareholders  collectively,
that the  General  Partner  is under no  obligation  to  consider  the  separate
interests  of the  Limited  Partners  (including,  without  limitation,  the tax
  
                                       26
<PAGE>

consequences to Limited  Partners or Assignees) in deciding whether to cause the
Partnership  to take (or decline to take) any actions  that the General  Partner
has  undertaken  in good  faith on  behalf  of the  Partnership,  including  the
disposition of properties of the Partnership, and that the General Partner shall
not be liable for monetary damages for losses sustained,  liabilities  incurred,
or benefits not derived by Limited  Partners in connection  with such  decisions
provided the General Partner does not violate the terms of any written agreement
between the Partnership and one or more Limited Partners.

          (c) ACTS OF AGENTS.  Subject to its  obligations and duties as General
Partner set forth in Section 7.1(a), the General Partner may exercise any of the
powers  granted to it by this  Agreement  and perform any of the duties  imposed
upon it under this Agreement  either directly or indirectly or by or through its
agents.  The General  Partner  shall not be  responsible  for any  misconduct or
negligence on the part of any such agent appointed by it in good faith.

          (d) EFFECT OF AMENDMENT. Any amendment, modification or repeal of this
Section 7.9 or any provision of this  Agreement  shall be  prospective  only and
shall not in any way affect the limitations on the General  Partner's  liability
to the Partnership and the Limited  Partners under this Section 7.9 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.

          (e) LIMITATION OF LIABILITY OF SHAREHOLDERS, DIRECTORS AND OFFICERS OF
THE GENERAL PARTNER. Any obligation or liability of the General Partner that may
arise at any time under this  Agreement or any  obligation or liability that may
be incurred by it pursuant to any other  instrument,  transaction or undertaking
contemplated by this Agreement shall be satisfied, if at all, out of the General
Partner's  assets only.  No such  obligation  or liability  shall be  personally
binding upon,  nor shall resort for the  enforcement  of any such  obligation or
liability  be had  to,  the  property  of any  of its  shareholders,  directors,
officers,  employees  or  agents,  regardless  of  whether  such  obligation  or
liability is in the nature of contract, tort or otherwise.

     7.10 OTHER MATTERS CONCERNING THE GENERAL PARTNER.

          (a) RELIANCE ON DOCUMENTS.  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 to be genuine and to have
been signed or presented by the proper party or parties.

          (b) RELIANCE ON  CONSULTANTS  AND  ADVISERS.  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  that 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.

                                       27
<PAGE>

          (c) ACTION THROUGH  OFFICERS AND ATTORNEYS.  The General Partner shall
have the  right,  in  respect  of any of its  powers or  obligations  under this
Agreement,  to act  through  any  of its  duly  authorized  officers  and a duly
appointed attorney or 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 that is  permitted  or
required to be done by the General Partner under this Agreement.

          (d)  ACTIONS TO  MAINTAIN  REIT  STATUS OR AVOID  TAXATION  OF GENERAL
PARTNER.  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 General Partner to continue
to qualify as a REIT or (ii) to avoid the General  Partner  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.

     7.11 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 of those assets.  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 declares and warrants that any Partnership
assets 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
for the use and benefit of the  Partnership in accordance with the provisions of
this Agreement;  provided,  however, 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.

     7.12 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 such Person shall be entitled to deal with the
General  Partner as if it were the  Partnership's  sole party in interest,  both
legally and  beneficially.  Each Limited  Partner waives any and all defenses or
other remedies that 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 on or claiming  under those  instruments


                                       28
<PAGE>

that (a) at the time of the execution and delivery of such certificate, document
or  instrument,  this  Agreement  was in full force and  effect,  (b) 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 (c)
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.

     7.13 TREATMENT OF AND LIMITATION ON PAYMENTS TO GENERAL PARTNER.

          (a) REIMBURSEMENT AND INDEMNIFICATION  PAYMENTS.  If and to the extent
any payments to the General  Partner  pursuant to Sections 7.4 or 7.8 constitute
gross  income to the General  Partner (as opposed to the  repayment  of advances
made on behalf of the  Partnership),  those amounts shall constitute  guaranteed
payments  within  the  meaning of  Section  707(c) of the Code,  and shall be so
treated  by the  Partnership  and all  Partners,  and  shall not be  treated  as
distributions for purposes of computing the Partners' Capital Accounts.

          (b) LIMITATION ON PAYMENTS TO GENERAL PARTNER.  To the extent that the
amount  paid or  credited to the  General  Partner or its  officers,  directors,
employees  or agents  pursuant to Section  7.4 or Section  7.8 would  constitute
gross income of the General Partner that is not described in Sections  856(c)(2)
or  856(c)(3)  of the Code (a "GP  Payment")  then,  notwithstanding  any  other
provisions of this Agreement,  the amount of such GP Payment for any fiscal year
shall not exceed the lesser of:

               (i) an amount equal to the excess, if any, of

                  (1) four  and  eight  tenths  percent  (4.8%)  of the  General
                      Partner's   total  gross  income  (not  including  any  GP
                      Payments or gross income from prohibited transactions) for
                      the fiscal year over

                  (2) the amount of gross income  (within the meaning of Section
                      856(c)(2) of the Code) derived by the General Partner from
                      sources  other than those  described  in  subsections  (A)
                      through (H) of Section  856(c)(2) of the Code (taking into
                      account Section 856(c)(5)(G), but not including the amount
                      of  any  GP  Payments  or  gross  income  from  prohibited
                      transactions); or

               (ii) an amount equal to the excess, if any, of

                  (1) twenty-four  and  eight  tenths  percent  (24.8%)  of  the
                      General Partner's total gross income (not including any GP
                      Payments or gross income from prohibited transactions) for
                      the fiscal year over

                  (2) the amount of gross income  (within the meaning of Section
                      856(c)(3) of the Code) derived by the General Partner from
                      sources  other than those  described  in  subsections  (A)
                      through  (I) of  Section  856(c)(3)  of the Code  (but not
                      including  the amount of any GP Payments  or gross  income
                      from prohibited transactions);

Notwithstanding the foregoing, GP Payments in excess of the amounts set forth in
paragraphs (i) and (ii) may be made if and to the extent the General Partner, as
a condition  precedent,  obtains an opinion of tax  counsel  that the receipt of

                                       29
<PAGE>

such excess amounts would not adversely affect the General  Partner's ability to
qualify as a REIT.  To the extent GP  Payments  may not be made in a year due to
the above  limitations,  such GP  Payments  shall  carry  over and be treated as
arising in the following year(s) (subject again to limitation as set forth above
in those years), for a maximum of seven years (treating amounts payable as first
being paid from the earliest year such amounts were carried  over,  and the next
succeeding years in chronological  order). If any GP Payment is carried over for
such  seven-year  period  and not  paid,  such  amount  shall  no  longer  be an
obligation  of the  Partnership.  If a GP  Payment is  inadvertently  made in an
amount  in  excess of the  limitations  in this  Section  7.13(b),  such  excess
payments  shall be  treated  as a  permitted  loan from the  Partnership  to the
General Partner, to be repaid as soon as practicable  following discovery of the
overpayment.



                  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
Section 10.5 (Partnership withholding obligations), or under the Act.

     8.2 MANAGEMENT OF BUSINESS.  No Limited Partner or Assignee (other than 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 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  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  7.7(e) and  subject to any other  agreements
entered into by a Limited  Partner or its Affiliates  with the General  Partner,
the  Partnership  or a  Subsidiary,  the following  rights shall govern  outside
activities of Limited Partners:

               (a) any Limited Partner (other than the General  Partner) and any
          officer, director,  employee, agent, trustee, Affiliate or shareholder
          of any Limited  Partner  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 in direct or indirect competition with the Partnership;

               (b)  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;

               (c) none of the Limited  Partners nor any other Person shall have
          any rights by virtue of this Agreement or the partnership relationship
          established  by this  Agreement in any business  ventures of any other
          Person, other than the General Partner, and such Persons shall have no

                                       30
<PAGE>

          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 that, if
          presented  to the  Partnership,  any  Limited  Partner  or such  other
          Person, could be taken by such Person;

               (d) the fact that a Limited  Partner may encounter  opportunities
          to purchase,  otherwise  acquire,  lease, sell or otherwise dispose of
          real or personal property and may take advantage of such opportunities
          or introduce such opportunities to entities in which it has or has not
          any  interest,  shall not subject  such  Partner to  liability  to the
          Partnership  or any of the  other  Partners  on  account  of the  lost
          opportunity; and

               (e) except as otherwise  specifically provided in this Agreement,
          nothing  contained  in this  Agreement  shall be deemed to  prohibit a
          Limited Partner or any Affiliate of a Limited Partner from dealing, or
          otherwise engaging in business, with Persons transacting business with
          the Partnership or from providing  services  relating to the purchase,
          sale,  rental,  management  or operation of real or personal  property
          (including real estate brokerage services) and receiving  compensation
          for those  activities,  from any Persons who have transacted  business
          with the Partnership or other third parties.

     8.4 PRIORITY  AMONG LIMITED  PARTNERS.  No Partner  (Limited or General) or
Assignee  shall have  priority  over any other  Partner  (Limited or General) or
Assignee  either as to the return of  capital  contributions  or,  except to the
extent  provided  by Article 6 or as  permitted  by Section  4.2,  or  otherwise
expressly provided in this Agreement, as to profits, losses or distributions.

     8.5 RIGHTS OF LIMITED PARTNERS RELATING TO THE PARTNERSHIP.

          (a) COPIES OF BUSINESS  RECORDS.  In addition to other rights provided
by this Agreement or by the Act,  including  rights set forth in Article 14, and
except as limited by Section 8.5(c),  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:

               (1) to  obtain a copy of the most  recent  annual  and  quarterly
          reports  filed with the  Securities  and  Exchange  Commission  by the
          General  Partner  pursuant to the Securities  Exchange Act of 1934, as
          amended;

               (2) to  obtain a copy of the  Partnership's  federal,  state  and
          local income tax returns for each Partnership Year;

               (3) to obtain a current list of the name and last known business,
          residence or mailing address of each Partner;

               (4) to obtain a copy of this  Agreement and the  Certificate  and
          all  amendments,  together  with  executed  copies  of all  powers  of
          attorney  pursuant to which this  Agreement,  the  Certificate and all
          amendments have been executed; and

               (5) 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.

                                       31
<PAGE>

          (b) NOTIFICATION OF CHANGES IN UNIT ADJUSTMENT FACTOR. The Partnership
shall  notify  each  Limited  Partner  in writing of any change to the number of
Units as a result  of a change to the Unit  Adjustment  Factor  within  ten (10)
Business Days of the date such change becomes effective.

          (c) CONFIDENTIAL  INFORMATION.  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 Partnership  information that (i)
the  General  Partner  believes  to be in the  nature of trade  secrets or other
information  the disclosure of which the General  Partner in good faith believes
is not in the best  interests  of the  Partnership  or (ii) the  Partnership  is
required  by law or by  agreements  with  unaffiliated  third  parties  to  keep
confidential.

     8.6 REDEMPTION RIGHT.

          (a) GENERAL.  Beginning  one year after the date on which each Limited
Partner is admitted to the Partnership (except as otherwise contractually agreed
to by the  General  Partner),  each  Limited  Partner  (other  than the  General
Partner) shall have the right (the "Redemption  Right") to cause the Partnership
to  purchase  on the  Specified  Redemption  Date  all or  any of  such  Limited
Partner's Units for cash equal to the Redemption Amount,  provided however, that
the General Partner has the authority to establish  different  payment schedules
to satisfy a Limited  Partner's  Redemption Right at the time the Units that are
the subject of such  Redemption  Right are issued.  The Redemption  Right may be
exercised by a Limited Partner (a "Redeeming Partner") at any time and from time
to time by  delivering a Notice of  Redemption  to the General  Partner not less
than ten (10) days prior to such redemption, provided that a Limited Partner may
not exercise the Redemption Right for less than one thousand (1,000) Partnership
Units unless such  Redeeming  Partner then holds less than one thousand  (1,000)
Partnership  Units,  in which event the  Redeeming  Partner  must  exercise  the
Redemption  Right  for all of the  Partnership  Units  held  by  such  Redeeming
Partner.  The  Assignee of any Limited  Partner may  exercise  the rights of the
Limited  Partner  pursuant to this Section 8.6, and the Limited Partner shall be
deemed to have  assigned  those rights to the Assignee and shall be bound by the
exercise of the rights by the Limited Partner's Assignee,  and payments shall be
made directly to the Assignee and not to the Limited Partner.

          (b) IF DELIVERY OF COMMON SHARES IS PROHIBITED,  ETC.  Notwithstanding
the  provisions  of Section  8.6(a) and (d), a Partner  shall not be entitled to
exercise the Redemption  Right pursuant to Section 8.6(a) if (i) the delivery of
Common  Shares  to such  Partner  on the  Specified  Redemption  Date  would  be
prohibited  under the  Articles  of  Incorporation,  or (ii) in the  opinion  of
counsel to the General  Partner,  there is a significant risk that a delivery of
Common  Shares to the  Partner  would  cause the  General  Partner  to no longer
qualify as a REIT, would  constitute a violation of applicable  securities laws,
or would result in the  Partnership no longer being treated as a partnership for
federal income tax purposes. In addition, the consummation of a redemption shall
be subject to the expiration or termination of the applicable waiting period, if
any, under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended.

                                       32
<PAGE>

          (c) SECTION 16 CONSIDERATIONS. If a Redemption Right is exercised by a
Redeeming  Partner  who is a  "reporting  person"  within the meaning of Section
16(a) of the Securities  Exchange Act of 1934, as amended (the "Exchange  Act"),
the General  Partner will promptly  notify such Redeeming  Partner as to whether
the  Redemption  Right will be satisfied with the payment of cash or through the
delivery of Common Shares.  If the  Partnership or the General Partner elects to
satisfy the  Redemption  Right with the payment of cash,  the Redeeming  Partner
shall have the right to either withdraw its exercise of the Redemption Right, or
delay the  consummation  of the  redemption  to the extent  necessary to avoid a
"short-swing" profit under Section 16(b) of the Exchange Act.

          (d) GENERAL PARTNER ASSUMPTION OF REDEMPTION RIGHT.

               (1)  Subject  to the other  provisions  of this  Section  8.6 and
Section 11.3 (Limited  Partners' rights to transfer),  beginning on the date one
year after a Limited Partner's admission to the Partnership (except as otherwise
contractually agreed to by the General Partner),  the General Partner may assume
directly  and  satisfy  the  obligations  of  the  Partnership  as to a  Limited
Partner's  Redemption  Right by paying to a Redeeming  Partner either the Shares
Amount,  or cash equal to the Redemption  Amount as of the Specified  Redemption
Date,  with the choice of  consideration  to be determined at the sole option of
the General Partner. If the General Partner shall exercise and perform its right
to satisfy the Redemption  Right in this manner,  the Partnership  shall have no
obligation  to pay any  amount to the  Redeeming  Partner  with  respect to such
Redeeming  Partner's exercise of the Redemption Right, and each of the Redeeming
Partner,  the  Partnership,  and the General Partner shall treat the transaction
between the General Partner and the Redeeming Partner as a sale of the Redeeming
Partner's  Partnership Units to the General Partner for federal and state income
tax purposes.  Each  Redeeming  Partner  agrees to execute such documents as the
General  Partner may  reasonably  require in connection  with the payment of the
Redemption  Amount.  The  General  Partner  shall at all times  reserve and keep
available  out of its  authorized  but unissued  Common  Shares,  solely for the
purpose of effecting the exchange of Partnership  Units for Common Shares,  such
number of Common  Shares as shall from time to time be  sufficient to effect the
conversion of all outstanding  Partnership Units, and the exercise or conversion
of all other rights to acquire Common Shares.  No Limited Partner shall,  solely
by virtue of being the holder of one or more Partnership  Units, be deemed to be
a shareholder of or have any other interest in the General Partner.

               (2) Each  Redeeming  Partner  agrees to execute such documents as
the  General  Partner  may  reasonably  require  in  connection  with,  and as a
condition  of, the  issuance of Common  Shares upon  exercise of the  Redemption
Right,  including,  without  limitation,  executing and delivering an investment
representation  letter with  respect to the matters set forth in Section  3.4(c)
and related matters.

     8.7 EXTRAORDINARY TRANSACTIONS.

          (a) The General Partner may not engage in any merger, consolidation or
other  combination  with or into another person or sale of all or  substantially
all of its assets, or any reclassification,  or any recapitalization (other than
stock splits and stock dividends or other events  described in the definition of


                                       33
<PAGE>

"Unit  Adjustment  Factor") or change of outstanding  Common Shares (a "Business
Combination"),  unless (i) the Limited Partners receive, or have the opportunity
to receive,  the same consideration per Unit as holders of Common Shares receive
per Common Share in the transaction (without regard to tax  considerations),  or
(ii) Limited  Partners (other than the General  Partner) holding at least 60% of
the Units held by Limited  Partners  (other  than the General  Partner)  vote to
approve the Business Combination.

          (b) In addition to the  requirements  of Section  8.7(a),  the General
Partner will not consummate a Business  Combination in which the General Partner
conducts a vote of the  shareholders of the General Partner unless the matter is
also submitted to a vote of the Partners.  For purposes of the Partnership vote,
(i) each holder of Units (including the General  Partner,  as to its limited and
general  partnership  interests) shall be entitled to a number of votes equal to
the total votes to which the holder would have been  entitled in the vote of the
General  Partner's  shareholders  if the holder's  Units had been  exchanged for
Common Shares upon the exercise of a Redemption  Right,  (ii) in the Partnership
vote,  the  General  Partner  shall  be  deemed  to  vote  all  Units  it  holds
(representing both its general and limited partnership  interests) in proportion
to the manner in which the General Partner's  shareholders  voted  (disregarding
shareholders  who did not vote),  and (iii) the  Business  Combination  shall be
deemed  approved by the  Partnership  if the votes so recorded  (the deemed vote
with respect to the General Partner's  interest and the actual vote of the other
holders of Units) satisfy the standard for a favorable vote of the  shareholders
of the General Partner.

          (c)  Notwithstanding  the  provisions  of Section  8.7(a) and (b), the
General Partner shall be permitted,  without compliance with the requirements of
Section 8.7(a) or (b): (i) to transfer all or part of its  partnership  interest
to an entity wholly owned by the General  Partner,  or if the General Partner is
wholly owned by another  entity (the  "Parent"),  to transfer all or part of its
General  Partner  partnership  interest  to the  Parent,  (ii) to merge into any
entity wholly-owned by the General Partner or with any parent entity that wholly
owns the General  Partner  (in either  such case no change  shall be made to the
Unit Adjustment  Factor as a result of that transaction and the surviving entity
shall be treated as was the  General  Partner),  and (iii) to merge into  Public
Storage  Properties XI, Inc. (in which case the Unit Adjustment  Factor shall be
adjusted as provided with respect to a Successor Entity to take into account the
ratio into which shares of the General  Partner will be converted into shares of
Public Storage Properties XI, Inc.).

     8.8 CONSENT OF CERTAIN LIMITED  PARTNERS.  Each of the properties listed on
Exhibit D (as well as any subsequently acquired property, the federal income tax
basis of which is determined  by reference to the federal  income tax basis of a
listed  property,  such as a property  acquired in a "like-kind  exchange" for a
listed property) is referred to as a "Designated  Property." The Partnership may
not sell or otherwise  dispose of any  Designated  Property  during the ten year
period  commencing on the date of the  contribution  to the  Partnership of that
Designated  Property in a transaction  that will cause gain  recognition  to the
contributing partner,  without the prior written consent of Public Storage, Inc.
The limitation on  disposition of the preceding  sentence shall not apply if, at
the  time  of  the  disposition,   Public  Storage,   Inc.  and  its  affiliated
partnerships  then own less than 30% of the  Units  owned as of the date of this
Agreement.  At the  time of any  subsequent  contributions  of  property  to the
Partnership,  the General  Partner may agree with the  contributor  to treat the


                                       34
<PAGE>

property  as a  Designated  Property  that may not be sold or disposed of by the
Partnership without the contributor's  consent for a period to be agreed upon by
the General Partner and the contributor.



                    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  appropriate  books and records
with respect to the Partnership's business,  including,  without limitation, all
books and records  necessary to provide to the Limited Partners any information,
lists and copies of documents  required to be provided  pursuant to Section 9.3.
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  purposes on an accrual basis in accordance
with generally accepted accounting  principles and for tax reporting purposes on
the accrual basis.

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

     9.3 REPORTS.

          (a) ANNUAL REPORTS. As soon as practicable, but in no event later than
120 days after the close of each  Partnership  Year,  the General  Partner shall
cause to be mailed to each  Limited  Partner as of the close of the  Partnership
Year, an annual report containing financial statements of the Partnership, or of
the General  Partner if such  statements  are prepared  solely on a consolidated
basis  with  the  General  Partner,  for such  Partnership  Year,  presented  in
accordance with generally accepted accounting principles,  such statements to be
audited  by a  nationally  recognized  firm of  independent  public  accountants
selected by the General Partner.

          (b) QUARTERLY REPORTS.  If the General Partner  distributes  quarterly
reports to its shareholders,  as soon as practicable, but in no event later than
60 days  after the close of each  calendar  quarter  (except  the last  calendar
quarter of each  year),  the  General  Partner  shall cause to be mailed to each
Limited Partner as of the last day of the calendar quarter,  a report containing
unaudited financial statements of the Partnership, or of the General Partner, if
such  statements are prepared  solely on a  consolidated  basis with the General
Partner,  and such other  information  as may be required by  applicable  law or
regulation, or as the General Partner determines to be appropriate.



                                 10. TAX MATTERS

     10.1 PREPARATION OF TAX RETURNS.  The General Partner shall arrange for the
preparation  and timely  filing of all  returns of  Partnership  income,  gains,
deductions,  losses and other items required of the  Partnership for federal and
state  income tax  purposes  and shall use all  reasonable  efforts to  furnish,


                                       35
<PAGE>

within 90 days of the close of each taxable year, the tax information reasonably
required by the General  Partner and the Limited  Partners for federal and state
income tax reporting  purposes.  The Limited Partners shall promptly provide the
General Partner with such  information  relating to the Contributed  Properties,
including  tax  basis  and  other  relevant  information,  as may be  reasonably
requested by the General Partner from time to time.

          10.2 TAX ELECTIONS.  Except as otherwise  provided in this  Agreement,
the  General  Partner  shall,  in its sole and  absolute  discretion,  determine
whether to make any available  election pursuant to the Code;  including without
limitation,  the  election  under  Section  754 of the Code in  accordance  with
applicable  regulations.  The  General  Partner  shall have the right to seek to
revoke any such election  (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
Partners.

          10.3 TAX MATTERS PARTNER.

               (a)  GENERAL.  The  General  Partner  shall be the  "tax  matters
partner" of the Partnership for federal income tax purposes. Pursuant to Section
6223(c) of the Code,  upon receipt of notice from the IRS of the beginning of an
administrative  proceeding  with  respect to the  Partnership,  the tax  matters
partner shall furnish the IRS with the name, address and profit interest of each
of the Limited Partners; provided, however, that such information is provided to
the Partnership by the Limited Partners. The Limited Partners shall provide such
information to the Partnership as the General Partner shall reasonably request.

               (b)  POWERS.  The tax  matters  partner  is  authorized,  but not
required:

                    (1) to enter into any  settlement  with the IRS 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  (a) who  (within the time
               prescribed   pursuant  to  the  Code  and  Regulations)  files  a
               statement  with the IRS  providing  that the tax matters  partner
               shall not have the authority to enter into a settlement agreement
               on behalf of such  Partner or (b) who is a "notice  partner"  (as
               defined  in  Section  6231 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  or  otherwise  given 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  United  States  Claims  Court,  or the  filing of a
               complaint for refund with 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;

                                       36
<PAGE>


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

                    (5) to enter  into an  agreement  with the IRS to extend the
               period for  assessing  any tax that is  attributable  to any item
               required to be taken into account 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  of
               the  Partnership  in  connection  with any tax audit or  judicial
               review  proceeding to the extent  permitted by applicable  law or
               regulations.

          (c)  ELECTING  LARGE  PARTNERSHIP.  The General  Partner,  in its sole
discretion,  may  cause  the  Partnership  to  elect  to be an  "electing  large
partnership"  under Section 775 of the Code. In that case,  the General  Partner
shall be the  person  authorized  to act on  behalf  of the  Partnership  in any
federal or related state income tax  proceeding  for purposes of Section 6255 of
the Code and shall be  authorized  to undertake any and all actions on behalf of
the Partnership to the maximum extent  contemplated  under Sections 6240 through
6255 of the Code (including, without limitation, to bind the Partnership and all
Partners with respect to any settlement of any proceeding).

          (d)   REIMBURSEMENT.   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) shall be borne by the  Partnership.  Nothing in this Agreement
shall be construed to restrict the Partnership  from engaging an accounting firm
and a law firm to assist the tax matters partner in discharging its duties under
this  Agreement,  so long as the  compensation  paid by the Partnership for such
services  is  reasonable.  The  taking of any action  and the  incurring  of any
expense by the General  Partner  pursuant to this  Section  10.3,  except to the
extent  required by law, is a matter in the sole and absolute  discretion of the
General Partner,  and the provisions  relating to indemnification of the General
Partner  set forth in  Section  7.8  shall be fully  applicable  to the  General
Partner in its capacity as such.

     10.4 ORGANIZATION 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  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 (a) the Partnership withholds such
payment from a distribution  that would otherwise be made to the Limited Partner
or (b) the General Partner determines, in its sole and absolute discretion, that


                                       37
<PAGE>

such payment may be satisfied out of the available funds of the Partnership that
would, but for such payment, be distributed to the Limited Partner.  Any amounts
withheld pursuant to the foregoing clauses (a) or (b) shall be treated as having
been distributed to such Limited Partner.  Each Limited Partner  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.  If a Limited  Partner  fails to pay any amounts  owed to the  Partnership
pursuant to this Section 10.5 when due, 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  (including,  without  limitation,  the right to  receive  distributions
otherwise payable by the Partnership to such defaulting  Limited  Partner).  Any
amounts payable by a Limited Partner under this provision shall bear interest at
the base rate on corporate loans at large United States money center  commercial
banks,  as  published  from time to time in the Wall Street  Journal,  plus four
percentage  points (but not higher than the maximum  lawful  rate) 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 under this provision.



                          11. TRANSFERS AND WITHDRAWALS

     11.1 TRANSFER.

          (a) DEFINITION. The term "transfer," when used in this Article 11 with
respect to a  Partnership  Unit,  shall be deemed to refer to a  transaction  by
which the General Partner purports to assign its Partnership Interest to another
Person or by which a Limited Partner purports to assign its Limited  Partnership
Interest to another  Person,  and  includes a sale,  assignment,  gift,  pledge,
encumbrance,  hypothecation,  mortgage, exchange or any other disposition by law
or otherwise.  The term "transfer" when used in this Article 11 does not include
any  redemption or repurchase of  Partnership  Units by the  Partnership  from a
Partner  or  acquisition  of  Partnership  Units  from a Limited  Partner by the
General Partner pursuant to Section 8.6 or otherwise. No part of the interest of
a Limited Partner shall be subject to the claims of any creditor, any spouse for
alimony  or  support,  or to  legal  process,  and  may  not be  voluntarily  or
involuntarily alienated or encumbered except as may be specifically provided for
in this Agreement.

          (b)  REQUIREMENTS.  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.

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<PAGE>

     11.2 TRANSFER OF GENERAL PARTNER'S PARTNERSHIP INTEREST.

          (a) GENERAL. The General Partner may not withdraw as a General Partner
or  transfer  its  General  Partnership  Interest  except in  connection  with a
transaction described in Section 8.7.

          (b) TRANSFER TO PARTNERSHIP.  The General Partner may transfer Limited
Partnership Interests held by it to the Partnership.

     11.3 LIMITED PARTNERS' RIGHTS TO TRANSFER.

          (a) GENERAL.  Except as provided in this Agreement,  a Limited Partner
may not transfer its Partnership  Interest  without the prior written consent of
the  General  Partner,  which  consent  may be given or  withheld by the General
Partner in its sole and  absolute  discretion.  Notwithstanding  the  foregoing,
subject to the provisions of  subsections  (d), (e), (f) and (g) of this Section
11.3,  and  Sections  11.4 and 11.6, a Limited  Partner  may,  without the prior
written consent of the General Partner

               (i)  transfer all or any portion of its  Partnership  Interest to
          the General Partner,

               (ii) transfer all or any portion of its  Partnership  Interest to
          an Affiliate,  another  original  Limited  Partner or to an "Immediate
          Family" member (i.e., as to any natural Person,  such natural Person's
          spouse, parents, descendants, nephews, nieces, brothers and sisters),

               (iii) if such Limited Partner is a natural  person,  transfer all
          or any  portion  of his or her  Partnership  Interest  upon his or her
          death to such Limited  Partner's  estate,  executor,  administrator or
          personal  representative  or to such Limited  Partner's  beneficiaries
          pursuant  to a  devise  or  bequest  or by the  laws  of  descent  and
          distribution  or to a trust of which such Limited Partner is a settlor
          or  co-settlor  with a member of his or her  Immediate  Family and the
          beneficiaries  of which  include  no Person  other  than such  Limited
          Partner and/or such Limited Partner's Immediate Family,

               (iv)  transfer  all or any  portion of its  Partnership  Interest
          pursuant to the exercise of the Redemption Right,

               (v) pledge all or any  portion of its  Partnership  Interest to a
          lending institution, that is not an Affiliate of such Limited Partner,
          as collateral  or security for a bona fide loan or other  extension of
          credit, and transfer such pledged Partnership Interest to such lending
          institution  in  connection  with the exercise of remedies  under such
          loan or extension or credit, and

               (vi) if such Limited  Partner is a  corporation,  partnership  or
          other business entity,  transfer all or any portion of its Partnership
          Interest to one or more entities that are wholly owned and  controlled
          by such Limited Partner or by distributing  Partnership Interests in a
          liquidation,  winding up or  otherwise  without  consideration  to the
          equity owners of such corporation, partnership or business entity.

                                       39
<PAGE>

In order to effect any transfer, the Limited Partner must deliver to the General
Partner a duly  executed  copy of the  instrument  making such transfer and such
instrument  must  evidence  the  written  acceptance  by the  assignee  of,  and
compliance with, all of the terms and conditions of this Agreement and represent
that  such  assignment  was  made in  accordance  with all  applicable  laws and
regulations.

               (b) GENERAL PARTNER RIGHT OF FIRST REFUSAL.  A Partner shall give
to the General  Partner  written  notice of any  proposed  transfer  that is not
otherwise  permitted pursuant to Section 11.3(a) above, which notice shall state
(i) the  identity of the  proposed  transferee,  and (ii) the amount and type of
consideration proposed to be received for the transferred Partnership Units. The
General  Partner shall have ten (10) days within which to give the  transferring
Partner notice of its election to acquire the Partnership  Units on the proposed
terms. If the General Partner does not so elect,  the  transferring  Partner may
transfer  such  Partnership  Units to a third party,  on economic  terms no more
favorable  to the  transferee  than the  proposed  terms,  subject  to the other
conditions of this Section 11.3.

               (c) ASSUMPTION OF OBLIGATIONS.  It is a condition to any transfer
otherwise  permitted  under this Agreement  (excluding  Pledges of a Partnership
Interest,  but  including  any  transfer  of the pledged  Partnership  Interest,
whether to the secured  party or  otherwise,  pursuant  to the  secured  party's
exercise of its  remedies  under such Pledge or the related loan or extension of
credit) that the transferee assumes by operation of law or express agreement all
of the  obligations of the transferor  Limited Partner under this Agreement with
respect to such  transferred  Partnership  Interest and no such transfer  (other
than pursuant to a statutory  merger or  consolidation  in which all obligations
and liabilities of the transferor Partner are assumed by a successor corporation
by operation of law) shall  relieve the  transferor  Partner of its  obligations
under this  Agreement  without  the  approval  of the  General  Partner,  in its
reasonable  discretion.  Notwithstanding  the  foregoing,  any transferee of any
transferred  Partnership  Interest  shall be  subject  to any and all  ownership
limitations contained in the Articles of Incorporation.  Any transferee, whether
or not  admitted as a  Substituted  Limited  Partner,  shall take subject to the
obligations  of the  transferor  under  this  Agreement.  Unless  admitted  as a
Substitute Limited Partner, no transferee,  whether by a voluntary transfer,  by
operation of law or  otherwise,  shall have rights under this  Agreement,  other
than the rights of an Assignee as provided in Section 11.5.

               (d)  INCAPACITATED  LIMITED  PARTNERS.  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 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 her  interest in the  Partnership.  The  Incapacity  of a Limited
Partner, in and of itself, shall not dissolve or terminate the Partnership.

               (e) TRANSFERS  CONTRARY TO SECURITIES  LAWS. The General  Partner
may prohibit any transfer  otherwise  permitted  under Section 11.3 by a Limited
Partner of its  Partnership  Units if, in the  opinion  of legal  counsel to the


                                       40
<PAGE>

Partnership,  such transfer  would require  filing of a  registration  statement
under  the  Securities  Act or would  otherwise  violate  any  federal  or state
securities laws or regulations  applicable to the Partnership or the Partnership
Units.

               (f)  TRANSFERS  AFFECTING  TAX  STATUS.  No transfer by a Limited
Partner of its Partnership  Units (or any economic or other  interest,  right or
attribute)  may be  made to any  Person,  including  a  redemption  or  exchange
pursuant  to  Section  8.6,  if (i) in the  opinion  of  legal  counsel  for the
Partnership,  it would cause a  termination  of the  Partnership  for federal or
state  income  tax  purposes  that the  General  Partner  believes  would have a
material  adverse effect or result in the Partnership  being treated for federal
income tax purposes as an  association  taxable as a  corporation,  or (ii) such
transfer  is  effectuated  through  an  "established  securities  market"  or  a
"secondary market (or the substantial equivalent)" within the meaning of Section
7704 of the Code. Notwithstanding anything to the contrary in this Agreement, no
interests  in the  Partnership  shall be  issued  in a  transaction  that is (or
transactions  that  are)  registered  or  required  to be  registered  under the
Securities Act.

               (g) TRANSFERS TO HOLDERS OF NONRECOURSE LIABILITIES.  No transfer
or pledge of any Partnership Units may be made to a lender to the Partnership or
any Person who is  related  (within  the  meaning of Section  1.752-4(b)  of the
Regulations)  to  any  lender  to  the  Partnership  whose  loan  constitutes  a
"nonrecourse  liability"  (within  the meaning of Section  1.752-1(a)(2)  of the
Regulations)  without  the  consent  of the  General  Partner,  in its  sole and
absolute discretion, provided that as a condition to any such consent the lender
will be  required  to enter into an  arrangement  with the  Partnership  and the
General Partner to exchange or redeem for the Redemption  Amount any Partnership
Units that such lender or related person owns or would acquire upon  foreclosure
of a security interest  simultaneously  with the time at which such lender would
be  deemed  to be a  partner  in the  Partnership  for  purposes  of  allocating
liabilities to such lender under Section 752 of the Code.

               (h) OTHER RESTRICTIONS.  In addition to any other restrictions on
transfer  contained in this Agreement,  in no event may a transfer or assignment
of a Partnership  Interest by any Partner (including a transfer upon exercise of
the Redemption  Right) be made without the consent of the General Partner in its
sole and absolute discretion:

                    (i) to any person or entity who lacks the legal right, power
               or capacity to own a Partnership Interest;

                    (ii) in violation of applicable law;

                    (iii) of any component  portion of a  Partnership  Interest,
               such as the Capital Account, or rights to distributions, separate
               and apart from all other components of a Partnership Interest,

                    (iv)  in the  event  such  transfer  adversely  affects  the
               General  Partner's  ability to qualify as a REIT or could subject
               the General Partner to any additional  taxes under Section 857 or
               Section 4981 of the Code;

                    (v) if 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);

                                       41
<PAGE>

                    (vi) if such  transfer  would,  in the opinion of counsel to
               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;
               or

                    (vii)  if  such  transfer   subjects  the   Partnership   to
               regulation  under the  Investment  Partnership  Act of 1940,  the
               Investment Advisors Act of 1940 or the Employee Retirement Income
               Security Act of 1974, each as amended.

     11.4 SUBSTITUTED LIMITED PARTNERS.

          (a) CONSENT OF GENERAL PARTNER REQUIRED. No Limited Partner shall have
the right to substitute a transferee  as a Limited  Partner in its place without
the prior written consent of the General Partner,  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 a  transferee  of any such  interests to
become a Substituted  Limited Partner shall not give rise to any cause of action
against the Partnership or any Partner.

          (b) RIGHTS AND DUTIES OF SUBSTITUTED  LIMITED  PARTNERS.  A transferee
who has been admitted as a Substituted  Limited  Partner in accordance with this
Article  11 shall  have all the  rights  and  powers  and be  subject to all the
restrictions and liabilities of a Limited Partner under this Agreement.

          (c)  AMENDMENT  OF  EXHIBIT  A. Upon the  admission  of a  Substituted
Limited Partner,  the General Partner shall amend Exhibit A to reflect the name,
address,   number  of  Partnership  Units,  and  Percentage   Interest  of  such
Substituted Limited Partner and to eliminate or adjust, if necessary,  the name,
address and interest of the  predecessor of such  Substituted  Limited  Partner.

     11.5  ASSIGNEES.   If  the  General  Partner,  in  its  sole  and  absolute
discretion,  does not consent to the admission of any permitted transferee under
Section  11.4  as a  Substituted  Limited  Partner,  such  transferee  shall  be
considered  an Assignee for  purposes of this  Agreement.  An Assignee  shall be
entitled  to all the rights of an  assignee  of a limited  partnership  interest
under the Act, including the right to receive distributions from the Partnership
and the share of Profit,  Loss, and gain  attributable to the Partnership  Units
assigned  to  such  transferee,  but  shall  not be  deemed  to be an  owner  of
Partnership  Units for any other purpose under this Agreement,  and shall not be
entitled to vote such  Partnership  Units in any matter presented to the Limited
Partners for a vote (such vote remaining with the transferor  Limited  Partner).
If any  such  transferee  desires  to  make a  further  assignment  of any  such
Partnership  Units,  such  transferee  shall be subject to all 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 Partnership Units.

     11.6 GENERAL PROVISIONS.

               (a)  WITHDRAWAL  OF  LIMITED  PARTNER.  No  Limited  Partner  may
withdraw from the Partnership other than as a result of a permitted  transfer of
  
                                       42
<PAGE>

all of such Limited Partner's  Partnership Units in accordance with this Article
11 or pursuant to a redemption of all of its Partnership  Units upon exercise of
the Redemption Right.

               (b) TRANSFER OF ALL  PARTNERSHIP  UNITS BY LIMITED  PARTNER.  Any
Limited  Partner who shall transfer all of its  Partnership  Units in a transfer
permitted  pursuant to this Article 11 or pursuant to the Redemption Right shall
cease to be a Limited Partner, except as otherwise provided in Section 11.5.

               (c) TIMING OF  TRANSFERS.  Transfers  pursuant to this Article 11
may only be made on the first day of a fiscal quarter of the Partnership, unless
the General Partner otherwise agrees.



                            12. ADMISSION OF PARTNERS

     12.1  ADMISSION OF  SUCCESSOR  GENERAL  PARTNER.  A successor to all of the
General  Partner's General  Partnership  Interest pursuant to Section 8.7 who is
proposed to be admitted as a successor  General Partner shall be admitted to the
Partnership as the General Partner, effective upon such transfer, provided that,
in the case of  transactions  other than  those  described  in  Section  8.7(c),
Limited Partners  representing a majority of the Percentage Interests (including
Limited  Partnership  Interests held by the General  Partner) vote to admit such
person as successor  General Partner,  which votes shall be cast by such Limited
Partners  in their  sole and  absolute  discretion.  Provided  such  vote of the
Limited Partners is obtained, 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
and such  other  documents  or  instruments  as may be  required  to effect  the
admission.

     12.2 ADMISSION OF ADDITIONAL LIMITED PARTNERS.

          (a)  GENERAL.  A  Person  who  makes  a  capital  contribution  to the
Partnership  in  accordance  with this  Agreement or who  exercises an option to
receive  Partnership Units shall be admitted to the Partnership as an Additional
Limited  Partner  only upon  furnishing  to the General  Partner (a) evidence of
acceptance in form  satisfactory  to the General Partner of all of the terms and
conditions  of this  Agreement,  including,  without  limitation,  the  power of
attorney  granted in Article 16 and (b) such other  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) CONSENT OF GENERAL PARTNER REQUIRED.  Notwithstanding  anything to
the contrary in this Section  12.2, no Person shall be admitted as an Additional
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 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.

                                       43
<PAGE>

     12.3  AMENDMENT  OF AGREEMENT  AND  CERTIFICATE.  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 Exhibit A) 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 Article 16.



                         13. DISSOLUTION AND LIQUIDATION

     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.  The Partnership  shall dissolve,  and its affairs shall be wound up,
upon the first to occur of any of the following ("Events of Dissolution"):

          (a) the  expiration of the  Partnership's  term as provided in Section
2.4;

          (b) an event of withdrawal of the General  Partner,  as defined in the
Act, unless,  within 90 days after the withdrawal,  remaining Partners holding a
majority  of the  Units  agree  in  writing  to  continue  the  business  of the
Partnership and to the appointment, effective as of the date of withdrawal, of a
substitute General Partner;

          (c) from and after the date of this  Agreement  through  December  31,
2056, an election to dissolve the  Partnership  made by the General Partner with
the consent of the holders of a majority of the Percentage  Interests (including
Limited  Partnership  Interests  held by the General  Partner),  and on or after
January 1, 2056,  an election to dissolve  the  Partnership  made by the General
Partner, in its sole and absolute discretion;

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

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

          (f) the merger or other  combination of the  Partnership  with or into
another entity; or

          (g) the General Partner --

               (1) makes an assignment for the benefit of creditors;

               (2) files a voluntary petition in bankruptcy;

               (3) is adjudged a bankrupt or insolvent,  or has entered  against
          it an order for relief in any bankruptcy or insolvency proceeding;

               (4)  files  a  petition   or  answer   seeking   for  itself  any
          reorganization,  arrangements, composition, readjustment, liquidation,
          dissolution or similar relief under any statute, law or regulation;

                                       44
<PAGE>

               (5) files an answer or other  pleading  admitting  or  failing to
          contest the material allegations of a petition filed against it in any
          proceeding of this nature; or

               (6) seeks,  consents to or  acquiesces  in the  appointment  of a
          trustee,  receiver or liquidator  of the General  Partner or of all or
          any substantial part of its properties.

     13.2 WINDING UP.

               (a) GENERAL. Upon the occurrence of an Event of Dissolution,  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 a majority in interest of
the Limited Partners (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 of the
property,  and the proceeds  shall be applied and  distributed  in the following
order:

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

               (2) Second,  to the payment and discharge of or provision for all
          of the Partnership's debts and liabilities to the General Partner;

               (3)  Third,   to  the  payment  and   discharge  of  all  of  the
          Partnership's debt and liabilities to the other Partners,  pro rata in
          accordance with amounts owed to each such Partner; and

               (4) The  balance,  if any,  to the  General  Partner  and Limited
          Partners in  accordance  with their  Capital  Accounts,  after  giving
          effect to all  contributions,  distributions,  and allocations for all
          periods.

          The General Partner shall not receive any additional  compensation for
any services  performed pursuant to this Article 13, other than reimbursement of
its expenses.

          (b)  WHERE  IMMEDIATE  SALE  OF  PARTNERSHIP'S   ASSETS   IMPRACTICAL.
Notwithstanding  the provisions of Section  13.2(a) that require  liquidation of
the assets of the Partnership,  but subject to the order of priorities set forth
in that  provision,  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 assets except those  necessary to satisfy  liabilities of
the Partnership  (including to those Partners as creditors) or, with the consent
of the Partners holding a majority of the Partnership  Units,  distribute to the
Partners,  in lieu of cash,  as  tenants in common  and in  accordance  with the
  
                                       45
<PAGE>

provisions of Section 13.2(a), 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  interest 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.

     13.3 LIQUIDATION.  Subject to Section 13.4, in the event the Partnership is
"liquidated"  within the meaning of  Regulations  Section  1.704-1(b)(2)(ii)(g),
distributions  shall be made pursuant to this Article 13 to the General  Partner
and Limited  Partners who have  positive  Capital  Accounts in  compliance  with
Regulations Section  1.704-1(b)(2)(ii)(b)(2)  (including any timing requirements
of those  provisions).  In the  discretion  of the General  Partner,  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: (a)  distributed to a
liquidating trust established for the benefit of the General Partner and Limited
Partners for the purpose of liquidating  Partnership assets,  collecting amounts
owed to the Partnership,  and paying any contingent or unforeseen liabilities or
obligations of the  Partnership or of 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 General Partner, 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 (b)  withheld 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
amounts shall be distributed to the General Partner and Limited Partners as soon
as practicable.

     13.4 DEEMED  DISTRIBUTION  AND  RECONTRIBUTION.  Notwithstanding  any other
provision 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  Event  of
Dissolution has occurred,  the  Partnership's  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.

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

     13.6 NOTICE OF  DISSOLUTION.  If an Event of Dissolution or an event occurs
that would,  but for provisions of Section 13.1,  result in a dissolution of the
Partnership,  the General  Partner shall,  within 30 days of the event,  provide
written  notice of the event to each of the  Partners  and to all other  parties
with whom the Partnership regularly conducts business (as determined in the sole
and absolute  discretion of the General Partner) and shall publish notice of the
event  in a  newspaper  of  general  circulation  in each  place  in  which  the
Partnership  regularly conducts business (as determined in the sole and absolute
discretion of the General Partner).

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<PAGE>

     13.7  CANCELLATION  OF  CERTIFICATE  OF  LIMITED   PARTNERSHIP.   Upon  the
completion of the  liquidation  of the  Partnership as provided in Section 13.2,
the Partnership  shall be terminated and the Certificate and all  qualifications
of the Partnership as a foreign limited  partnership in jurisdictions other than
the State of  California  shall be  canceled  and such  other  actions as may be
necessary to terminate the Partnership shall be taken.

     13.8 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
liquidation  of its assets  pursuant to Section  13.2,  in order to minimize any
losses  otherwise  attendant  upon such  winding-up,  and the provisions of this
Agreement  shall  remain in effect  between  the  Partners  during the period of
liquidation.



                14. AMENDMENT OF PARTNERSHIP AGREEMENT; MEETINGS

     14.1 AMENDMENTS.

          (a)  GENERAL.  Amendments  to this  Agreement  may be  proposed by the
General  Partner or by any  Limited  Partners  holding 25 percent or more of the
Partnership Units. 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 on the  proposal  and to transact  any other  business  that it may deem
appropriate.  For purposes of obtaining a written vote, the General  Partner may
establish a Partnership  Record Date and 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 THAT IS  CONSISTENT  WITH THE GENERAL  PARTNER'S
RECOMMENDATION  WITH  RESPECT TO THE  PROPOSAL.  Except as  provided  in Section
14.1(b) or 14.1(c), a proposed amendment shall be adopted and be effective as an
amendment  to this  Agreement  if it is approved  by the General  Partner and it
receives the consent of a majority of the Partnership  Units held by the Limited
Partners  (including  Partnership  Units  held  by the  General  Partner  in its
capacity as a Limited Partner).

          (b) GENERAL PARTNER'S POWER TO AMEND. Notwithstanding Section 14.1(a),
the  General  Partner  shall have the power,  without the consent of the Limited
Partners,  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 rights,  powers,  duties, and preferences of
     the holders of any  additional  Partnership  Interests  issued  pursuant to
     Section 4.2(b);

               (4) to  reflect  a change  that  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
                                       47
<PAGE>

     arising under this Agreement that will not be inconsistent with law or with
     the provisions of this Agreement;

               (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; and

               (6) to reflect such changes as are  reasonably  necessary for the
     General Partner to maintain its status as a REIT.

          The General Partner will notify the Limited Partners when any material
action under this Section 14.1(b) is taken in the next regular  communication to
the Limited Partners.

          (c) CONSENT OF ADVERSELY  AFFECTED PARTNER  REQUIRED.  Notwithstanding
Section 14.1(a), this Agreement shall not be amended without the consent of each
Partner adversely affected if such amendment would:

               (1) convert a Limited Partner's  interest in the Partnership into
          a general partner's interest,

               (2) modify the limited liability of a Limited Partner,

               (3) alter rights of the Partner to receive distributions pursuant
          to Article  5, or the  allocations  specified  in Article 6 (except as
          permitted pursuant to Section 4.2 and Section 14.1(b)(3)),

               (4) alter or modify the Redemption Right or the Redemption Amount
          as set forth in Section 8.6 and related definitions,

               (5) cause the  termination of the  Partnership  prior to the time
          set forth in Sections 2.5 or 13.1,

               (6)  affect  the  operation  of the Unit  Adjustment  Factor in a
          manner adverse to the Limited Partners, or

               (7)  impose  on the  Limited  Partners  any  obligation  to  make
          additional  capital  contributions  to the Partnership or (viii) amend
          this Section 14.1(c).

Further,  no  amendment  may alter the  restrictions  of the  General  Partner's
authority  set forth in  Section  7.2  without  the  consent  specified  in that
Section.

     14.2 MEETINGS OF THE PARTNERS.

          (a)  GENERAL.  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 holding 25 percent or more of the Partnership Units.
The call shall state the nature of the business to be transacted.  Notice of any
such  meeting  shall be given to all  Partners not less than seven days nor more
than 30 days prior to the date of such  meeting.  Partners may vote in person or
by proxy at such meeting.  Whenever the vote or consent of Partners is permitted
or required under this Agreement, such vote or consent may be given at a meeting
  
                                     48
<PAGE>

of Partners  or may be given in  accordance  with the  procedure  prescribed  in
Section 14.1.  Except as otherwise  expressly  provided in this  Agreement,  the
consent of holders of a majority of the Percentage  Interests (including Limited
Partnership Interests held by the General Partner) shall control.

          (b) ACTION BY WRITTEN CONSENT.  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  for such  action to be taken at a  meeting).  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
for such action to be taken at a meeting).  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) PROXIES.  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 its
attorney-in-fact. No proxy shall be valid after the expiration of 11 months from
the date of the proxy unless otherwise provided in the proxy. Every proxy shall,
unless  otherwise  specifically  provided  in the  proxy,  be  revocable  at the
pleasure of the Limited Partner executing it.

          (d) CONDUCT OF MEETING. Each meeting of 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,  including  establishment of a Partnership
Record Date for such meeting.



                             15. GENERAL PROVISIONS

     15.1  ADDRESSES AND NOTICE.  All notices and demands  under this  Agreement
shall be in writing, and may be either delivered personally (which shall include
deliveries  by  courier)  by  telefax,  telex or other wire  transmission  (with
request  for  evidence  of  receipt  in a manner  appropriate  with  respect  to
communications  of that type,  provided that a confirmation copy is concurrently
sent by a  nationally  recognized  express  courier for  overnight  delivery) or
mailed,  postage  prepaid,  by  certified or  registered  mail,  return  receipt
requested,  directed to the parties at their  respective  addresses set forth on
Exhibit A, as it may be amended from time to time,  and, if to the  Partnership,
such notices and demands sent in the  foregoing  manner must be delivered at its
principal place of business set forth above.  Notices delivered personally or by
telefax,  telex or other  wire  transmission  shall be  effective  on the  first
Business Day  following the date of delivery or  transmission.  Notices that are
mailed shall be deemed to have been received  three (3) Business Days  following
the date so mailed. Any party may designate a different address to which notices
and demands shall  subsequently  be directed by written notice given in the same
manner and directed to the Partnership at its office.

     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

                                       49
<PAGE>

Agreement and in no way define, limit, extend or describe the scope or intent of
any provisions of this  Agreement.  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 and their heirs, executors,  administrators,  successors,
legal representatives and permitted assigns.

     15.6  WAIVER  OF  PARTITION.   The  Partners  agree  that  the  Partnership
properties are not and will not be suitable for partition.  Accordingly, each of
the Partners  irrevocably waives any and all rights (if any) that it may have to
maintain any action for partition of any of the Partnership properties.

     15.7 ENTIRE  AGREEMENT.  This Agreement  constitutes  the entire  agreement
among the parties with respect to the matters  contained in this  Agreement;  it
supersedes any prior agreements or  understandings  among them and it may not be
modified or amended in any manner other than pursuant to Article 14.

     15.8  SECURITIES  LAW  PROVISIONS.  The  Partnership  Units  have  not been
registered  under  the  federal  or  state  securities  laws of any  state  and,
therefore,  may not be resold unless  appropriate  federal and state  securities
laws, as well as the provisions of Article 11, have been complied with.

     15.9 REMEDIES NOT EXCLUSIVE.  Any remedies  contained in this Agreement for
breaches of obligations under this Agreement shall not be deemed to be exclusive
and shall not  impair  the right of any  party to  exercise  any other  right or
remedy, whether for damages, injunction or otherwise.

     15.10 TIME. Time is of the essence of this Agreement.

     15.11 CREDITORS.  None of the provisions of this Agreement shall be for the
benefit of, or shall be enforceable by, any creditor of the Partnership.

     15.12 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 of this Agreement shall constitute
waiver of any such breach or any other covenant, duty, agreement or condition.

     15.13   EXECUTION   COUNTERPARTS.   This   Agreement  may  be  executed  in
counterparts,  all of which together shall  constitute one agreement  binding on
all the parties to this Agreement, notwithstanding that all such parties are not
signatories  to the  original or the same  counterpart.  Each party shall become
                                       50
<PAGE>

bound  by  this  Agreement  immediately  upon  affixing  its  signature  to this
Agreement.

     15.14  APPLICABLE LAW. This Agreement shall be construed in accordance with
and governed by the laws (other than the law governing the choice of law) of the
State of  California,  without  regard to the principles of conflicts of law. In
the  event  of a  conflict  between  any  provision  of this  Agreement  and any
nonmandatory  provision  of the Act,  the  provisions  of this  Agreement  shall
control and take precedence.

     15.15  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 in this Agreement shall
not be affected.

     15.16 NO THIRD-PARTY  RIGHTS CREATED.  The provisions of this Agreement are
solely for the purpose of defining the interests of the Partners,  inter se; and
no other person,  firm or entity  (i.e.,  a party who is not a signatory to this
Agreement or a permitted  successor  to such a signatory)  shall have any right,
power,  title or  interest by way of  subrogation  or  otherwise,  in and to the
rights, powers, title and provisions of this Agreement.



                              16. POWER OF ATTORNEY

     16.1 POWER OF ATTORNEY.

               (a) SCOPE. Each Limited Partner and each Assignee 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

                         (i) all  certificates,  documents and other instruments
                    (including,  without  limitation,  this  Agreement  and  the
                    Certificate  and  all  amendments  or  restatements  of  the
                    Agreement or the  Certificate)  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 California and in all other  jurisdictions in which
                    the Partnership may conduct business or own property;

                         (ii) 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;

                         (iii)  all   conveyances   and  other   instruments  or
                    documents  that the General  Partner  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;

                                       51
<PAGE>

                         (iv)  all   instruments   relating  to  the  admission,
                    withdrawal,  removal or substitution of any Partner pursuant
                    to, or other events  described in,  Articles 11, 12 or 13 or
                    the capital contribution of any Partner; and

                         (v) all  certificates,  documents and other instruments
                    relating to the determination of the rights, preferences and
                    privileges of Partnership Interests; and

                    (2)  execute,  swear to,  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, to make,
evidence,  give,  confirm or ratify any vote,  consent,  approval,  agreement or
other  action that is made or given by the Partners  under this  Agreement or is
consistent with the terms of this Agreement or appropriate or necessary,  in the
sole  discretion of the General  Partner,  to effectuate  the terms or intent of
this Agreement.

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

               (b)  IRREVOCABILITY.  The foregoing power of attorney is 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 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 Partnership Units and
shall extend to such Limited Partner's or Assignee's heirs, successors,  assigns
and personal representatives. Each such Limited Partner or Assignee agrees to be
bound by any  representation  made by the General Partner,  acting in good faith
pursuant to such power of attorney;  and each such  Limited  Partner or Assignee
waives  any and all  defenses  that  may be  available  to  contest,  negate  or
disaffirm  the action of the  General  Partner,  taken in good faith  under such
power of attorney. Each Limited Partner or Assignee shall execute and deliver to
the  General  Partner or the  Liquidator,  within 15 days  after  receipt of the
General  Partner's  request,  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.

               The parties have signed this  Agreement as of the date  specified
in the introductory paragraph of this Agreement.

                                GENERAL PARTNER:

                                AMERICAN OFFICE PARK PROPERTIES, INC.,
                                a California corporation


                                By:       s/ Ronald L. Havner, Jr.
                                          --------------------------------
                                         Ronald L. Havner, Jr., President
                                         and Chief Executive Officer


                                       52
<PAGE>

                                LIMITED PARTNERS:

                                AMERICAN OFFICE PARK PROPERTIES, INC.,
                                a California corporation


                                By:       s/ Ronald L. Havner, Jr.
                                          --------------------------------
                                         Ronald L. Havner, Jr., President
                                         and Chief Executive Officer


                                PUBLIC STORAGE, INC.,
                                a California corporation


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                         David P. Singelyn, Vice President


                                SEI/PSP II JOINT VENTURES
                                a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                SEI/PSP III JOINT VENTURES
                                a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                PS PARTNERS V, LTD.,
                                a California Limited Partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                       53
<PAGE>

                                SEI/PSP V JOINT VENTURES
                                a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                SEI/PSP VI JOINT VENTURES
                                a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                SEI/PSP VI JOINT VENTURES
                                a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                SEI/PSP VII JOINT VENTURES
                                 a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                PS PARTNERS VIII, LTD.,
                                a California Limited Partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                       54

<PAGE>

                                SEI/PSP I JOINT VENTURES
                                 a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                PS PARTNERS II, LTD.,
                                a California limited partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                PS TEXAS HOLDINGS, LTD.,
                                a Texas limited partnership

                                By:      PS GPT Properties, Inc., 
                                         a California corporation,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                SEI/PSP IV JOINT VENTURES
                                 a California general partnership

                                By:      Public Storage, Inc.,
                                         General Partner


                                By:       s/ David P. Singelyn
                                          --------------------------------
                                          David P. Singelyn, Vice President


                                GALAXY PARTNERSHIP,
                                a Maryland general partnership


                                By:       s/ Andrew J. Czekaj
                                          --------------------------------
                                         Andrew J. Czekaj, General Partner


                                       55
<PAGE>

                                GALAXY ASSOCIATES, L.L.C.,
                                a Virginia limited liability company


                                By:       s/ Andrew J. Czekaj
                                          --------------------------------
                                         Andrew J. Czekaj, Manager


                                FARATON CORP.,
                                a British Virgin Islands corporation

                                By:       s/ John Pritchard
                                          --------------------------------
                                         John Pritchard, Authorized Officer


                                       56



<TABLE> <S> <C>


<ARTICLE>                     5
<CIK>                         0000866368
<NAME>                 PUBLIC STORAGE PROPERTIES XI, INC.       
                       
 <MULTIPLIER>                                                   1
 <CURRENCY>                                                    US
        
 <S>                                                          <C>
 <PERIOD-TYPE>                                             12-mos
 <FISCAL-YEAR-END>                                    Dec-31-1997
 <PERIOD-START>                                       Jan-01-1997
 <PERIOD-END>                                         Dec-31-1997
 <EXCHANGE-RATE>                                                1
 <CASH>                                                 2,455,000
 <SECURITIES>                                                   0
 <RECEIVABLES>                                            454,000
 <ALLOWANCES>                                                   0
 <INVENTORY>                                                    0
 <CURRENT-ASSETS>                                       2,909,000
 <PP&E>                                                39,135,000
 <DEPRECIATION>                                      (13,198,000)
 <TOTAL-ASSETS>                                        28,846,000
 <CURRENT-LIABILITIES>                                  1,475,000
 <BONDS>                                                        0
                                           0
                                                     0
 <COMMON>                                                  25,000
 <OTHER-SE>                                            27,346,000
 <TOTAL-LIABILITY-AND-EQUITY>                          28,846,000
 <SALES>                                                        0
 <TOTAL-REVENUES>                                       7,643,000
 <CGS>                                                          0
 <TOTAL-COSTS>                                          3,962,000
 <OTHER-EXPENSES>                                         201,000
 <LOSS-PROVISION>                                               0
 <INTEREST-EXPENSE>                                             0
 <INCOME-PRETAX>                                        3,480,000
 <INCOME-TAX>                                                   0
 <INCOME-CONTINUING>                                    3,480,000
 <DISCONTINUED>                                                 0
 <EXTRAORDINARY>                                                0
 <CHANGES>                                                      0
 <NET-INCOME>                                           3,480,000
 <EPS-PRIMARY>                                               1.77
 <EPS-DILUTED>                                               1.38
        

</TABLE>



                AOPP PRO FORMA CONSOLIDATED FINANCIAL STATEMENTS


The  following  unaudited  pro  forma  consolidated  financial  statements  were
prepared to reflect the proposed  merger (the "Merger") of American  Office Park
Properties,  Inc.  ("AOPP") and Public Storage  Properties  XI, Inc.  ("PSP11"),
which is described in the Public Storage Properties XI, Inc. Proxy Statement and
Prospectus  dated  February  5, 1998 (the "Proxy  Statement").  Under the Merger
Agreement:

     *    AOPP will merge into PSP11.

     *    Each outstanding share of PSP11 Common Stock will continue to be owned
          by current  holders or converted  into the right to receive  $20.50 in
          cash.  The amount of cash  elections  (the "Cash  Elections")  will be
          limited to 20% of the total  outstanding  shares of PSP11.  If a PSP11
          shareholder  does not elect cash, he or she will continue to own PSP11
          Common Stock.

     *    Each  share of PSP11  Common  Stock  Series B and each  share of PSP11
          Common  Stock  Series C will be  converted  into either .8641 share of
          PSP11 Common  Stock or the right to receive  $17.71 in cash (up to 20%
          of the  outstanding  Series B and  Series  C),  at the  option  of the
          shareholders.  All of the  Series  B and  Series C  shareholders  have
          indicated that they intend to elect PSP11 Common Stock in the Merger.

     *    Each share of AOPP  Common  Stock will be  converted  into either 1.18
          shares of PSP11  Common  Stock or the right to receive  $24.19 in cash
          (up to 20% of the outstanding AOPP Common Stock),  at the option of an
          AOPP  shareholder.  All of the AOPP  shareholders  have indicated that
          they intend to elect PSP11 Common Stock in the Merger.

     *    The surviving  corporation  in the Merger will be renamed "PS Business
          Parks, Inc. ("PSBP")."

     *    Concurrent  with the Merger,  PSP11 will exchange (the  "Exchange") 11
          mini-warehouses  and two properties  that combine  mini-warehouse  and
          commercial space for 11 commercial properties owned by Public Storage,
          Inc. ("PSI").

The number of PSP11  Common  Shares  outstanding  upon the  consummation  of the
Merger will depend in large part on the amount of shares  electing  cash.  Since
the amount is not predictable,  two scenarios of pro forma financial information
have been provided:  (i) assuming  maximum Cash Elections of 20% of PSP11 Common
Stock and (ii) assuming no Cash Elections.

The Merger will be treated as a reverse  merger  whereby AOPP will be treated as
the accounting  acquirer  using the purchase  method.  This has been  determined
based upon the following:

     *    The  business  focus post  Merger  will  continue to be that of AOPP's
          which includes the acquisition, ownership and management of commercial
          properties.  Prior to the  Merger,  PSP11's  business  focus  has been
          primarily  on  the  ownership  and  operation  of  its  mini-warehouse
          properties which represent approximately 81% of its portfolio.

     *    Following the Merger, the former  shareholders and unitholders of AOPP
          will own in excess of 80% of the merged companies.

In addition to adjustments to reflect the proposed Merger, pro forma adjustments
were made to reflect the following transactions:

     1.   On April 1, 1997, AOPP LP (the "Operating  Partnership") acquired four
          commercial properties from PSI in exchange for 1,235,500 OP Units.



                                      PF-1
<PAGE>



     2.   On July 31, 1997,  AOPP  acquired two  commercial  properties  from an
          unaffiliated  third party for cash totaling  $33,750,000.  AOPP raised
          the cash for this  acquisition  by  issuing  1,690,000  shares of AOPP
          Common Stock primarily to PSI for cash totaling $33,800,000.

     3.   On September  24, 1997,  AOPP  acquired one  commercial  property (the
          "Largo  Property") from an  unaffiliated  third party for an aggregate
          cost  of  $10,374,000,  consisting  of  cash  of  $10,050,000  and the
          issuance of 12,000 Operating  Partnership  units ("OP Units") having a
          value of $324,000.

     4.   On December  10,  1997,  AOPP  purchased a  commercial  property  (the
          "Northpointe   Property")  for  $3,875,000,   consisting  of  cash  of
          $3,575,000  and the  issuance  of  11,111  OP Units  having a value of
          $300,000.

     5.   On December 24, 1997,  AOPP completed a transaction  where AOPP issued
          1,512,718  OP Units and  2,970,134  shares of AOPP  common  stock to a
          subsidiary of a state pension  fund,  and the  subsidiary of the state
          pension fund,  through a merger and contribution,  transferred to AOPP
          six commercial properties (the "Acquiport  Properties" - $118,655,000)
          and $1,000,000  cash. The Company  incurred  $3,300,000 in transaction
          costs.  On January 9, 1998,  the  subsidiary of the state pension fund
          exercised  its option to convert the shares of OP units into shares of
          AOPP common stock on a one-for-one basis.

     6.   In December 1997,  AOPP reached an agreement in principle with a group
          of  institutional  investors  under  which  AOPP  would  issue  up  to
          5,740,741  shares of AOPP common stock at $27.00 per share in separate
          tranches.  The first tranche,  1,851,852 shares or $50.0 million,  was
          issued in January  1998.  The remainder of the shares are to be issued
          as the funds are  required  by AOPP,  in minimum  increments  of $20.0
          million.

     7.   On January  13,  1998,  AOPP  purchased  a  commercial  property  (the
          "Ammendale   property")  for   $22,643,000,   consisting  of  cash  of
          $22,450,000  and the  issuance  of 7,143  OP  Units  having a value of
          $193,000.

     8.   In March 1998,  AOPP  purchased  one  commercial  property  and had an
          agreement in principle to purchase  another  commercial  property (the
          "March  Acquisitions",  referred  to  in  the  Proxy  Statement  dated
          February 5, 1998 as the "Proposed  Acquisitions") from an unaffiliated
          third  party  for  an  aggregate  cost  of  $33,152,000,  composed  of
          $18,200,000  cash,  the  issuance of 8,033 OP Units  having a value of
          $217,000, and the assumption of mortgage notes payable of $14,735,000.

     9.   No effect has been given to a capital  infusion from the subsidiary of
          the state pension fund referred to in 5) above.  Pursuant to the terms
          of the merger and  contribution  agreement  with the  subsidiary,  the
          subsidiary has the right to acquire  additional  shares in AOPP at $27
          per share in order to maintain its proportional interest in AOPP prior
          to the PSP 11 merger.  Assuming all of the pro forma adjustments noted
          above (primarily the issuance of shares to  institutional  investors),
          the  subsidiary  would  have the right to  purchase  approximately  an
          additional 850,000 shares of AOPP stock.

The pro forma consolidated  balance sheet at December 31, 1997 has been prepared
to reflect (i) the  aforementioned  acquisitions  and proposed  acquisitions  of
commercial  properties  which  occurred after December 31, 1997 the related (ii)
conversion  of OP units to AOPP  Common  Stock by the  subsidiary  of the  state
pension  fund,  (iii) the  issuance  of $50.0  million of AOPP  Common  Stock to
institutional  investors,  and (iv) the proposed Merger transaction between AOPP
and PSP11.

The pro forma  consolidated  statement of income for the year ended December 31,
1997 has been prepared assuming (i) the aforementioned acquisitions and proposed
acquisitions of commercial properties (ii) the issuance of $50.0 million of AOPP

                                      PF-2
<PAGE>

Common Stock to institutional  investors,  and (iii) the proposed Merger between
AOPP and PSP11, as if all such  transactions  were completed at the beginning of
fiscal 1997.

The pro forma adjustments are based upon available  information and upon certain
assumptions  as set forth in the notes to the pro forma  consolidated  financial
statements that PSP11 and AOPP believe are reasonable in the circumstances.  The
pro forma  consolidated  financial  statements and accompanying  notes should be
read in conjunction with the historical financial statements of PSP11, AOPP, and
certain financial  information with respect to properties  acquired and proposed
to be acquired pursuant to agreements in principle.  (SEE "FINANCIAL  STATEMENTS
- -ACQUIRED  PROPERTIES,   -EXCHANGED  PROPERTIES, -BALDON,   -LARGO,   -ACQUIPORT
PROPERTIES  AND PROPOSED  ACQUISITIONS  INCLUDED IN THE ABOVE  REFERENCED  PROXY
STATEMENT).  The following pro forma  consolidated  financial  statements do not
purport to represent what AOPP's results of operations  would actually have been
if the  transactions  in fact had occurred at the  beginning  of the  respective
periods  or to  project  AOPP's  results of  operations  for any future  date or
period.



                                      PF-3
<PAGE>
<TABLE>
<CAPTION>

                             PS BUSINESS PARKS, INC.
                      PRO FORMA CONSOLIDATED BALANCE SHEET
                                December 31, 1997
                                   (Unaudited)
             (Amounts in thousands, except share and per share data)
                     Assuming Maximum Cash Elections of 20%
                                      AOPP
             -------------------------------------------------------
                                                                                                                      
                                                                          Pro Forma Adjustments                       
                                                       -----------------------------------------------------          
                                                                        Property          Other            AOPP       
                       ASSETS                             AOPP        Acquisitions     Adjustments      Pre-Merger    
                                                      (Historical)      (Note 1)         (Note 2)       (Pro Forma)   
                                                      ------------      --------         --------       -----------   
<S>                                                   <C>            <C>              <C>               <C>           
Cash and cash equivalents                             $     3,884    $  (40,650)      $   41,200        $  4,434      
Real estate facilities, net of accumulated                314,238        55,795               -          370,033      
   depreciation
Intangible assets, net of accumulated amortization          3,272             -               -           3,272       
Other assets                                                2,060             -               -           2,060       
Purchase cost                                                   -             -               -               -       
                                                      ------------      --------         --------       -----------   


     Total assets                                     $   323,454    $   15,145       $   41,200       $ 379,799      
                                                      ============      ========         ========       ===========   
        LIABILITIES AND SHAREHOLDERS' EQUITY
Accrued and other liabilities                         $     8,331    $        -       $   (2,900)      $   5,431      
Notes payable                                               3,500        14,735           (3,500)         14,735      
Minority interest                                         168,665           410          (30,297)        138,778      
Shareholder's equity:
   Common stock , $.10 par value, 100,000,000 shares 
      authorized 6,549,411 issued and outstanding 
      (13,724,103 pro forma shares issued 
       and outstanding)                                       655                            336             991      
   Series A                                                     -             -                -               -      
   Series B                                                     -             -                -               -      
   Series C                                                     -             -                -               -      
   Paid-in capital                                        142,699                         77,561         220,260      
   Cumulative net income                                    3,154             -                -           3,154      
   Cumulative distribution paid                            (3,550)            -                -          (3,550)     
                                                      ------------      --------         --------       -----------   
       Total shareholders' equity                         142,958             -           77,897         220,855      
                                                      ------------      --------         --------       -----------   
   Total liabilities and shareholders' equity         $   323,454    $   15,145        $  41,200       $  379,799     
                                                      ============      ========         ========       ===========   

Book Value per share of Common Stock (Note 4)         $     21.83                                      $    22.28     
                                                      ============                                      ===========   


</TABLE>
<TABLE>
<CAPTION>

                             PS BUSINESS PARKS, INC.
                      PRO FORMA CONSOLIDATED BALANCE SHEET
                                December 31, 1997
                                   (Unaudited)
             (Amounts in thousands, except share and per share data)
                     Assuming Maximum Cash Elections of 20%
                                      AOPP
             -------------------------------------------------------

                                                                                             Adjustments
                                                                             ----------------------------------
                                                                                                          PSBP
                       ASSETS                                 PSP11        Purchase     Valuation     Post-Merger
                                                           (Historical)    (Note 3)      (Note 3)     (Pro Forma)
                                                           ------------    --------      --------     -----------
<S>                                                        <C>           <C>           <C>            <C>       
Cash and cash equivalents                                  $  2,455      $ (1,889)     $       -      $    5,000
Real estate facilities, net of accumulated                   25,937             -         23,156         419,126
   depreciation
Intangible assets, net of accumulated amortization               -              -         (1,540)          1,732
Other assets                                                   454              -              -           2,514
Purchase cost                                                    -         48,987        (48,987)              -
                                                           ------------    --------      --------     -----------


     Total assets                                         $  28,846      $ 47,098      $ (27,371)     $  428,372
                                                           ============    ========      ========     ===========
        LIABILITIES AND SHAREHOLDERS' EQUITY
Accrued and other liabilities                             $   1,475      $     -       $       -      $    6,906
Notes payable                                                     -         6,373              -          21,108
Minority interest                                                 -             -              -         138,778
Shareholder's equity:
   Common stock , $.10 par value, 100,000,000 shares
      authorized 6,549,411 issued and outstanding 
      (13,724,103 pro forma shares issued 
       and outstanding)                                           -           203           178           1,372
   Series A                                                      18             -           (18)              -
   Series B                                                       2             -            (2)              -
   Series C                                                       5             -            (5)              -
   Paid-in capital                                           32,421        40,522       (32,599)        260,604
   Cumulative net income                                     29,451             -       (29,451)          3,154
   Cumulative distribution paid                             (34,526)            -        34,526          (3,550)
                                                           ------------    --------      --------     -----------
       Total shareholders' equity                            27,371        40,725       (27,371)        261,580
                                                           ------------    --------      --------     -----------
   Total liabilities and shareholders' equity             $    28,846    $ 47,098      $(27,371)      $ 428,372
                                                           ============    ========      ========     ===========

Book Value per share of Common Stock (Note 4)             $    10.83                                  $   19.06
                                                           ============                               ===========


</TABLE>
         See Accompanying Notes to Pro Forma Consolidated Balance Sheet.
                                      PF-4

<PAGE>


                             PS BUSINESS PARKS, INC.
                  NOTES TO PRO FORMA CONSOLIDATED BALANCE SHEET
                                December 31, 1997
                                   (Unaudited)
                    (Assuming Maximum Cash Elections of 20%)




1.   ACQUISITION OF REAL ESTATE FACILITIES 
     -------------------------------------

     On January 13, 1998, AOPP purchased the Ammendale property for an aggregate
     cost of  $22,643,000  consisting  of  $22,450,000  cash and the issuance of
     7,143 OP Units having a value of $193,000.

     In March 1998, AOPP purchased one commercial  property and had an agreement
     in  principle  to  purchase   another   commercial   property  (the  "March
     Acquisitions,"  referred  to as the  "Proposed  Acquisitions"  in the Proxy
     Statement  dated February 5, 1998) from  unaffiliated  third parties for an
     aggregate cost of $33,152,000,  composed of $18,200,000  cash, the issuance
     of 8,033  OP  Units  having a value  of  $217,000,  and the  assumption  of
     mortgage notes payable of $14,735,000.

     The  following  pro  forma  adjustments  have  been  made to the pro  forma
     consolidated  balance  sheet  as  of  December  31,  1997  to  reflect  the
     acquisition and proposed  acquisitions of the above  commercial  properties
     and the related issuance of OP Units:

<TABLE>
<CAPTION>
                                                                                                     (in 000's)
                                                                                                -------------------
                                                                                               

          <S>                                                                                <C>
     *    Cash and cash  equivalents  has been  decreased  to  reflect  the cash
          portion  of the  acquisition  cost  of the  properties  purchased,  as
          follows:
                   March Acquisitions...............................................                $    (18,200)
                   Ammendale Property...............................................                     (22,450)
                                                                                                -------------------
                                                                                                   $    (40,650)
                                                                                                ===================

     *    Real estate  facilities  has been adjusted to reflect the  acquisition
          cost of the facilities acquired:                                                          $     33,152
                   March Acquisitions...............................................                      22,643
                   Ammendale Property...............................................            -------------------
                                                                                                    $     55,795
                                                                                                ===================

     *    Notes payable has been  increased to reflect the principal  balance of
          related notes expected to be assumed by AOPP in
          connection with the March Acquisitions....................................                $     14,735
                                                                                                ===================


     *    Minority interest has been increased to reflect the issuance of 15,176
          OP Units in connection with the acquisition of the March
          Acquisitions and Ammendale properties.....................................               $        410
                                                                                                ===================


</TABLE>
                                      PF-5
<PAGE>

2.   OTHER ADJUSTMENTS
     -----------------

     On  December  24,  1997,  AOPP  completed a  transaction  where AOPP issued
     1,512,718 shares of OP units and 2,970,134 shares of AOPP common stock to a
     subsidiary of a state pension fund, and the subsidiary of the state pension
     fund, through a merger and contribution, transferred to AOPP six commercial
     properties ($118,655,000) and $1,000,000 cash. The Company incurred a total
     of $3,300,000 in transaction costs.  Approximately  $400,000 of these costs
     were  paid in  December  1997 and  approximately  $2,900,000  were  paid in
     January 1998.

     On January 9, 1998,  the subsidiary of the state pension fund exercised its
     option to convert the shares of OP Units into  shares of AOPP common  stock
     on a one-for-one basis.

     In December 1997,  AOPP reached an agreement with a group of  institutional
     investors  under  which AOPP  would  issue up to  5,740,741  shares of AOPP
     common stock at $27.00 per share in separate  tranches.  The first tranche,
     1,851,852  shares  or $50.0  million,  was  issued  in  January  1998.  The
     remainder of the shares are to be issued as the funds are required by AOPP,
     in minimum  increments  of $20 million.  Funds from the first  tranche were
     utilized to repay a $3,500,000  loan due to PSI, to fund  remaining  unpaid
     costs related to the subsidiary of a state pension fund transaction, and to
     complete the real estate  transactions  that  occurred or are  projected to
     occur in 1998 (the March Acquisitions and Ammendale properties).

     The following pro forma  adjustments have been made to reflect the issuance
     of $50.0  million of AOPP  Common  Stock to  institutional  investors,  the
     conversion of the OP Units into shares of AOPP stock,  AOPP's payoff of its
     loan from PSI,  and the  payment  of  remaining  transaction  costs for the
     subsidiary of the state pension fund transaction.
<TABLE>
<CAPTION>

                                                                                                        (in 000's)
                                                                                                       ------------

     *    Cash and  cash  equivalents  has been  increased  to  reflect  the net
          proceeds from the issuance of common stock to institutional  investors
          (gross proceeds of $50,000,000 less estimated offering
         <S>                                                                                     <C>            
          costs of $2,400,000)......................................................             $        47,600

     *    Cash  and  cash   equivalents  have  been  decreased  to  reflect  the
          utilization  of a  portion  of the  proceeds  from  the  institutional
          investors to repay the $3,500,000  loan due to PSI, and to reflect the
          payment of $2,900,000 in transaction costs which were unpaid
          and accrued at December 31, 1997..........................................                      (6,400)
                                                                                                       ------------
                                                                                                 $        41,200
                                                                                                       ============

     *    Accounts payable and accrued  liabilities have been reduced to reflect
          the payment of transaction costs which were unpaid and
          accrued at December 31, 1997..............................................                      (2,900)
                                                                                                       ============

     *    Notes payable have been reduced to reflect the repayment of a
          $3,500,000 loan due to PSI................................................             $        (3,500)
                                                                                                       ============

</TABLE>
                                      PF-6
<PAGE>
<TABLE>
<CAPTION>
                                                                                                        (in 000's)
                                                                                                       ------------
     *    Common Stock has been adjusted to reflect the following items:
         <S>                                                                                    <C>           
          *    Conversion of 1,512,718 OP Units into AOPP common stock......                      $          151
          *    Issuance of 1,851,852 shares of AOPP common stock to                                                              
               institutional investors.......................................                                185
                                                                                                ------------------
                                                                                                 $           336
                                                                                                ==================

     *     Paid in capital has been  adjusted  to reflect the  following items:
           *   Conversion of 1,512,718 OP Units into AOPP common stock......                     $        30,146
           *   Issuance of 1,851,852 shares of AOPP common stock to         
               institutional investors.......................................                             47,415
                                                                                                ------------------
                                                                                                 $        77,561
                                                                                                ==================

     *      Minority Interest has been adjusted to reflect the conversion of
            1,512,718 OP Units into AOPP common stock ........................                   $       (30,297)
                                                                                                ==================
</TABLE>

3.    MERGER PRO FORMA ADJUSTMENTS
      ----------------------------

     The Merger will be accounted  for using the purchase  method of  accounting
     with AOPP being the  accounting  acquirer.  The total purchase cost will be
     allocated  to  the   acquired  net  assets;   first  to  the  tangible  and
     identifiable  intangible  assets and liabilities  acquired based upon their
     respective  fair values,  and the remainder will be allocated to the excess
     of  purchase  cost  over  fair  value  of  assets  acquired,  if any.  Upon
     completion  of the Merger,  the  outstanding  shares of AOPP  common  stock
     (historical  shares  outstanding  at December  31, 1997  combined  with the
     shares  issued in January  1998) will be  converted  into an  aggregate  of
     11,698,498  shares of PSP11  Common  Stock and PSP11  will be  renamed  "PS
     Business Parks, Inc."

     In determining the cost of the Merger,  AOPP evaluated as a measure of cost
     of the Merger (i) the aggregate fair value of PSP11's net assets  acquired,
     (ii) the fair value of PSP11's Common Stock traded in the market, and (iii)
     the cash  election  price of $20.50 per share of PSP11 Common  Stock.  AOPP
     determined that the use of the cash price of $20.50 was a reliable  measure
     of the Merger cost; further, that such cash price was materially equivalent
     to the Merger cost had either of the other alternatives been chosen,  based
     upon the following:

     *    The fair value of the net assets of PSP11 were readily determinable as
          of August 15, 1997(date the Merger was announced).  Substantially  all
          of the PSP11 assets were  comprised of real estate  facilities  having
          current appraised values as determined by independent appraisers.  The
          estimated  fair  value per share of PSP11  Common  Stock at August 15,
          1997  based upon the fair  values of the net assets was  approximately
          $20.50 per share.

     *    Since AOPP is the  accounting  acquirer,  AOPP's  common  stock market
          price would have been an indicator of the Merger cost. However, AOPP's
          common  stock is not  publicly  traded,  accordingly,  AOPP  evaluated
          PSP11's common stock as a determination of AOPP's implied common stock
          value.  The market price of PSP11's  Common Stock from January 1, 1997
          through  August 15, 1997 ranged from  $20-3/8 to $19-3/8.  The closing
          price of PSP11's Common Stock on August 15, 1997, was $20.00.  PSP11's
          trading price for the one month period after the  announcement  of the
          proposed Merger traded in the range from $19-15/16 to $20-9/16.


                                      PF-7
<PAGE>

     *    Each outstanding share of PSP11 Common Stock will continue to be owned
          by current  holders or converted  into the right to receive  $20.50 in
          cash. The amount of cash elections will be limited to 20% of the total
          outstanding  shares of PSP11.  If a PSP11  shareholder  does not elect
          cash, he or she will  continue to own PSP11 Common  Stock.  Similarly,
          each share of AOPP  Common  Stock will be  converted  into either 1.18
          shares of PSP11  Common  Stock or the right to receive  $24.19 in cash
          (up to 20% of the outstanding AOPP Common Stock),  at the option of an
          AOPP shareholder.

In  determining  the fair  value of the net  assets to be  acquired,  historical
carrying  values as of December 31, 1997 were used with respect to PSP11's other
assets and accrued  liabilities  since they approximate fair value and appraised
values were used for PSP11's real estate facilities. The aggregate purchase cost
and its  preliminary  allocation to the historical  assets and liabilities is as
follows:
<TABLE>
<CAPTION>
                                                                                                         (in 000's)
                                                                                                      --------------
         PURCHASE COST:
         --------------

    <S>                                                                                                <C>           
     *    Issuance  of  1,455,950  shares of Common  Stock to  PSP11's  Series A
          common shareholders (1,819,937 shares outstanding less assumed
          shares electing cash of 363,987) at $20.50 per share..................                        $   29,847
     *    Issuance of 569,655  shares of Common  Stock to the holders of PSP11's
          Common  Stock  Series  B  and  Series  C  (707,071   combined   shares
          outstanding  less  cancellation  of  47,824  shares  of  Series  C the
          remaining of which is multiplied by the conversion ratio of 0.8641) at
          $20.50 per share.....................................................                             11,678
     *    Cash  elections  (assumes  that 20% or 363,987  shares of the Series A
          Common Stock of PSP11 elect to receive $20.50 per share in cash in the
          Merger)...............................................................                             7,462
                                                                                                        -----------
               Total Purchase Cost..............................................                      $   48,987
                                                                                                        ===========


         PRELIMINARY ALLOCATION OF PURCHASE COST:
         ----------------------------------------

              Cash..............................................................                        $    2,455
              Other assets......................................................                               454
              Accrued and other liabilities.....................................                            (1,475)
              Real estate facilities (fair value of $48,000,000 less $447,000 of
                excess aggregate fair values of net assets acquired over
                purchase cost)..................................................                            47,553
                                                                                                        -----------

                                                                                                        $   48,987
                                                                                                        ===========

</TABLE>
                                      PF-8
<PAGE>

     The following pro forma adjustments have been made to reflect the Merger as
of December 31, 1997:
<TABLE>
<CAPTION>


                                                                                                       (in 000's)
                                                                                                      --------------
             PURCHASE ADJUSTMENTS:
             ---------------------


               <S>                                                                                     <C>
               * Cash and cash equivalents have been reduced to reflect the
                 cash necessary to satisfy cash elections ($7,462,000) combined
                 with estimated direct costs and expenses of the merger of $800,000                    $   (8,262)
                                                                                                       =========== 



               * Unallocated purchase cost has been increased to reflect the
                 aggregate purchase cost.........................................                      $   48,987
                                                                                                       =========== 



               * Common stock has been increased to reflect the issuance of
                 2,025,605 shares with a par value of $0.10 per share...............                   $      203
                                                                                                       =========== 



               * Paid-in Capital has been decreased to reflect the issuance of
                 common stock ($41,525,000 less par value of $203,000 and
                 estimated direct costs and expenses of the Merger of $800,000)......                  $   40,522
                                                                                                       =========== 


             VALUATION ADJUSTMENTS:
             ----------------------



               * Unallocated purchase cost has been decreased to reflect the
                 allocation of the aggregate purchase cost............................                 $  (48,987)
                                                                                                       =========== 



               * Real estate facilities has been increased to reflect the fair
                 value of the real  estate  facilities  to be  acquired  in the
                 Merger  (purchase price allocation of $47,553,000 plus related
                 net  historical  cost of management  contracts on AOPP's books
                 with  respect  to  such  properties  ($1,540,000)  less  PSP11
                 historical net book value of $25,937,000)............................                  $   23,156
                                                                                                       =========== 
                                                                                      



               * AOPP's intangible assets have been reduced to reflect the
                 reclassification  to real estate with respect to the above pro
                 forma adjustment......................................................                $   (1,540)
                                                                                                       =========== 



               * PSP11's historical equity has been eliminated as follows:
                      Series A common stock............................................                 $      (18)
                      Series B common stock............................................                         (2)
                      Series C common stock............................................                         (5)
                      Paid-in capital..................................................                    (32,421)
                      Cumulative net income............................................                    (29,451)
                      Cumulative distributions.........................................                     34,526
                                                                                                --------------------
                                                                                                        $  (27,371)
                                                                                                       =========== 
</TABLE>
                                      PF-9
<PAGE>
ADDITIONAL MERGER RELATED ADJUSTMENTS:
- --------------------------------------


AOPP  would  not have  sufficient  cash for  operations  after  satisfying  cash
elections  and closing  costs of the Merger,  and would  borrow from its line of
credit.  The  following  pro forma  adjustments  have been made to reflect these
borrowings,  as  well  as to  reflect  the  issuance  of  common  stock  to AOPP
shareholders pursuant to the terms of the Merger Agreement.
<TABLE>
<CAPTION>

                                                                                                            (in 000's)
                                                                                                      --------------------
               <S>                                                                                    <C>
              *    Cash has been increased to reflect the borrowings from AOPP's line
                   of credit............................................................                 $    6,373
                                                                                                      ====================

              *    Notes payable has been increased to reflect the borrowings from
                   AOPP's line of credit.............................................                    $    6,373
                                                                                                      ====================

              *    Common  stock has been  increased  to reflect the issuance of
                   1,784,517  shares  (par  value  of  $0.10  per  share)  to the
                   shareholders  of AOPP to  adjust  to the  terms of the  Merger
                   Agreement  (9,913,981  pro  forma  shares  multiplied  by  the
                   conversion ratio of 1.18 less
                   9,913,981 shares)....................................................                 $      178
                                                                                                      ====================

              *    Paid-in capital has been decreased to reflect the issuance of
                   the above common stock to AOPP shareholders.......................                    $     (178)
                                                                                                      ====================
</TABLE>

EXCHANGE OF PROPERTIES
- ----------------------

Concurrent  with the  Merger,  PSP11 will  exchange 11  mini-warehouses  and two
properties that combine  mini-warehouse  and commercial  space for 11 commercial
properties  owned by PSI.  The fair value of the  mini-warehouse  facilities  is
approximately  $42,400,000  compared  to the  fair  value  of the 11  commercial
properties  to be received  of  $42,900,000.  Through the pro forma  adjustments
above,  the commercial  facilities  are reflected on the pro forma  consolidated
balance  sheet at their fair  approximate  values as a result of the  accounting
acquisition  of PSP11 by AOPP.  No  additional  adjustments  have  been  made to
reflect the Exchange as the relative valuations are nearly the same.


                                     PF-10
<PAGE>



4.   BOOK VALUE PER SHARE OF COMMON STOCK

     Book value per share has been  determined by dividing  total  shareholders'
     equity by the outstanding shares of Common Stock. The following  summarizes
     the shares outstanding:


<TABLE>
<CAPTION>

                                                                                                      Common shares
                                                                                                       outstanding
                                                                                                       --------------
             <S>                                                                                        <C>
              *    AOPP historical shares outstanding at December 31, 1997............                     6,549,411
              *    AOPP shares issued to subsidiary of state pension fund in connection
                   with conversion of its OP Units into common stock of AOPP..........                     1,512,718
              *    Pro forma shares issued to institutional investors.................                     1,851,852
                                                                                                       --------------
                              Pre-Merger pro forma AOPP shares outstanding............                     9,913,981

              *    PSP11's Series A shares (assuming maximum Cash Elections,  see
                  "Purchase cost" above)..............................................                     1,455,950

              *    PSP11's Series B and C (see "Purchase cost" above).................                       569,655

              *    Incremental shares issued to AOPP shareholders based upon the
                   conversion   of  the   Pre-Merger   AOPP   shares  into  PSP11
                   equivalents  (9,913,981 pro forma shares  subtracted  from the
                   product of 9,913,981 multiplied by 1.18)...........................                     1,784,517
                                                                                                       --------------
                              Post-Merger pro forma AOPP shares outstanding...........                    13,724,103
                                                                                                       ==============


</TABLE>
                                     PF-11
<PAGE>
<TABLE>
<CAPTION>

                                                                          PS BUSINESS PARKS, INC.
                                                                PRO FORMA CONSOLIDATED STATEMENT OF INCOME
                                                                   For the Year Ended December 31, 1997
                                                                                (Unaudited)
                                                               (Amounts in thousands, except per share data)
                                                                 (Assuming Maximum Cash Elections of 20%)

                                                                                AOPP
                                            ---------------------------------------------------------------
                                                                                                           
                                                                                                           
                                                                       Pro Forma Adjustments               
                                                          ----------------------------------------------   
                                                          Acquisition of   Acquisition of                  
                                                            real estate     real estate         Other      
                                               AOPP       from affiliates    from third      adjustments   
                                           (Historical)      (Note 1)         parties          (Note 3)    
                                           ------------      --------         -------          --------    
                                                                              (Note 2)
REVENUES:
   Rental income:
<S>                                         <C>            <C>             <C>               <C>           
     Commercial properties                  $   30,169     $    1,038      $   27,024        $        -    
     Mini-warehouse properties                       -              -               -                 -    
   Facility management fees                        956            (52)              -                 -    
   Interest and other income                       453              -               -                 -    
                                           ------------      --------         -------          --------    
                                                31,578            986          27,024                 -    
                                           ------------      --------         -------          --------    
EXPENSES:
   Cost of operations:
     Commercial properties                      12,330            363           7,759                 -    
     Mini-warehouse properties                       -              -               -                 -    
   Cost of managing facilities                     189            (12)              -                 -    
   Depreciation and amortization                 5,195             92           5,526                 -    
   General and administrative                    1,461              -               -               300    
   Interest expense                                  1              -           1,105                 -    
                                           ------------      --------         -------          --------    
                                                19,176            443          14,390               300    
                                           ------------      --------         -------          --------    
   Income before minority interest in
     income                                     12,402            543          12,634              (300)   
   Minority interest in income (Note 7)         (8,566)             -               -            (1,189)   
                                           ------------      --------         -------          --------    

   Net income (loss)                            $3,836           $543         $12,634           $(1,489)   
                                           ============      ========         =======          ========    

   PER SHARE OF COMMON STOCK:
   Net income (Note 4 and 6)                $     1.45                                                     
                                           ============                                                    
   Weighted average shares (Note 4 and 6)        2,641                                                     
                                           ============                                                    

</TABLE>
<TABLE>
<CAPTION>

                                                                          PS BUSINESS PARKS, INC.
                                                                PRO FORMA CONSOLIDATED STATEMENT OF INCOME
                                                                   For the Year Ended December 31, 1997
                                                                                (Unaudited)
                                                               (Amounts in thousands, except per share data)
                                                                 (Assuming Maximum Cash Elections of 20%)

                                                                                AOPP
                                            ----------------------------------------------------------------------------
                                                                                                                                 
                                                                                   Merger
                                                                                Adjustments
                                                                                -----------
                                                                                Exchange of
                                                   AOPP                         real estate         PSBP
                                                Pre-Merger        PSP11         facilities      Post-Merger
                                               (Pro forma)     (Historical)      (Note 5)       (Pro forma)
                                               -----------     ------------      --------       -----------
                                           
REVENUES:
   Rental income:
<S>                                            <C>             <C>             <C>              <C>       
     Commercial properties                     $   58,231      $    1,418      $    8,008       $   67,657
     Mini-warehouse properties                          -           6,143          (6,143)               -
   Facility management fees                           904               -            (471)             433
   Interest and other income                          453              82               -              535
                                               -----------     ------------      --------       -----------
                                                   59,588           7,643           1,394           68,625
                                               -----------     ------------      --------       -----------
EXPENSES:
   Cost of operations:
     Commercial properties                         20,452             682           3,271           24,405
     Mini-warehouse properties                          -           2,082          (2,082)               -
   Cost of managing facilities                        177               -             (93)              84
   Depreciation and amortization                   10,813           1,198             146           12,157
   General and administrative                       1,761             201               -            1,962
   Interest expense                                 1,106               -             462            1,568
                                               -----------     ------------      --------       -----------
                                                   34,309           4,163           1,704           40,176
                                               -----------     ------------      --------       -----------
   Income before minority interest in
     income                                        25,279           3,480            (310)          28,449
   Minority interest in income (Note 7)            (9,755)              -            (168)          (9,923)
                                               -----------     ------------      --------       -----------

   Net income (loss)                              $15,524          $3,480           $(478)         $18,526
                                               ===========     ============      ========       ===========

   PER SHARE OF COMMON STOCK:
   Net income (Note 4 and 6)                   $     1.57      $     1.38                       $     1.35
                                               ===========     ============                     ===========
   Weighted average shares (Note 4 and 6)           9,914           2,527                           13,724
                                               ===========     ============                     ===========

</TABLE>
     See Accompanying Notes to Pro-Forma Consolidated Statements of Income.
                                      PF-12

<PAGE>

                             PS BUSINESS PARKS, INC.
              NOTES TO PRO FORMA CONSOLIDATED STATEMENTS OF INCOME
                      For the Year Ended December 31, 1997
                                   (Unaudited)
                    (Assuming Maximum Cash Elections of 20%)


1.   ACQUISITION  OF REAL  ESTATE  FACILITIES  FROM  AFFILIATES  (THE  "ACQUIRED
     PROPERTIES")
     --------------------------------------------------------------------------

     On April 1,  1997,  the  Operating  Partnership  acquired  four  commercial
     properties from PSI in exchange for 1,235,500 OP Units.

     The  following  pro  forma  adjustments  have  been  made to the pro  forma
     consolidated   statements  of  income  to  reflect  the  above  as  if  the
     transaction was completed as of January 1, 1997:

<TABLE>
<CAPTION>
                                                                                                                  (in 000's)
                                                                                                              ----------------

              *   Rental income has been increased to reflect:
                  *  the pro forma rental income as if the real estate facilities acquired on
                  <S>                                                                                       <C>       
                     April 1, 1997 were owned by AOPP throughout the entire period................                  $    4,127

                  *  less the rental income with respect to these properties included in
                     AOPP's historical amounts....................................................                      (3,089)
                         Total incremental rental income.........................................            -----------------
                                                                                                                   $     1,038
                                                                                                             ==================

              *   Facility  management fee income has been decreased to eliminate
                  AOPP's  historical  management  fee income (5% of rental income)
                  with respect to the commercial properties acquired on                       
                  April 1, 1997, as such fee is not collected on owned facilities...............                   $       (52)
                                                                                                             ==================


              *   Cost of operations has been increased as follows:
                  * To reflect the pro forma cost of operations as if the real estate
                    facilities acquired on April 1, 1997 were owned by AOPP throughout the        
                    entire full period............................................................                 $    1,227
                  * The above adjustment excludes facility management fees,  accordingly,  a
                    pro forma adjustment has been made to reflect the actual cost of management...                         41
                  * To eliminate cost of operations included in AOPP's historical amounts.........                       (905)
                                                                                                             ------------------
                        Total incremental cost of operations......................................                 $      363
                                                                                                             ==================
                                                                                                  
                                                                                                  

              *   Cost of managing facilities has been decreased to eliminate the
                  costs  associated with the management fee income with respect to
                  the  properties  acquired  on April 1, 1997.  The  reduction  in
                  management fee income will result
                  in a reduction in cost of operations with respect to facility management..........                 $      (12)
                                                                                                             ==================

              *   Depreciation has been increased to reflect the incremental depreciation of
                  the commercial properties acquired on April 1, 1997...............................                 $       92
                                                                                                             ==================
</TABLE>

2.   ACQUISITION OF REAL ESTATE FACILITIES FROM THIRD PARTIES
     --------------------------------------------------------

     During  1997 and  1998,  AOPP has  completed  the  acquisition  of  several
     properties  and has an agreement  in  principle  to acquire one  additional
     property:

               *    Baldon  Properties:  In July  1997,  AOPP  issued  1,690,000
                    shares of common stock  primarily  to PSI for cash  totaling
                    $33,800,000.  AOPP used substantially all of the proceeds to
                    acquire  two  commercial  properties  in July  1997  from an
                    unaffiliated third party for $33,750,000 in cash.

                                     PF-13

<PAGE>
               *    Largo  Property:  On September  24, 1997,  AOPP acquired one
                    commercial  property for an aggregate  cost of  $10,374,000,
                    consisting of $10,050,000 cash and the issuance of 12,000 OP
                    units having a value of $324,000.

               *    On December 10, 1997,  AOPP purchased a commercial  property
                    (the "Northpointe  Property") for $3,875,000,  consisting of
                    cash of  $3,575,000  and the  issuance  of  11,111  OP units
                    having a value of $300,000.

               *    Acquiport Properties: On December 24, 1997, AOPP completed a
                    transaction   where  AOPP  issued  1,512,718  OP  units  and
                    2,970,134  shares of AOPP common stock to a subsidiary  of a
                    state pension fund,  and the subsidiary of the state pension
                    fund, through a merger and contribution, transferred to AOPP
                    six  commercial  properties  ($118,655,000)  and  $1,000,000
                    cash. The Company incurred  $3,300,000 in transaction costs.
                    In January  1998,  the  subsidiary of the state pension fund
                    exercised  its option to convert the OP units into shares of
                    AOPP common stock.

               *    March Acquisition Properties:  In March 1998, AOPP purchased
                    one commercial property and had an agreement in principle to
                    purchase another commercial property from unaffiliated third
                    parties for an aggregate cost of  $33,152,000  consisting of
                    cash  totaling  $18,200,000,  the issuance of 8,033 OP Units
                    having a value of $217,000 and the assumption of $14,735,000
                    of mortgage debt.

               *    On January 13, 1998,  AOPP  purchased a commercial  property
                    (the "Ammendale  property") for  $22,643,000,  consisting of
                    cash of  $22,450,000  and the  issuance  of  7,143  OP units
                    having a value of $193,000.

The following pro forma  adjustments have been made to reflect the operations of
these properties as if such properties had been acquired at the beginning of the
year:
<TABLE>
<CAPTION>

                                                                                                                        (000's)
                                                                                                                  -------------

     *    Rental  income  has been  increased  to reflect  the pro forma  rental
          income of the  properties,  as if these  facilities were owned by AOPP
          throughout 1997:

          *    Rental income for 1997 for the following properties:
                        <S>                                                                                       <C>      
                        Baldon properties ...........................................................              $    6,570
                        Largo property...............................................................                   1,343
                        Acquiport  properties........................................................                  14,813
                        Northpointe Property.........................................................                     631
                        Ammendale Property...........................................................                   2,883
                        March Acquisitions...........................................................                   3,916
                
          *    Less:  the  portion  of  rental  income  with  respect  to  these
               properties which has been included in AOPP's historical amounts......................                  (3,132)
                                                                                                                    --------- 

                     
                                                                                                                   $   27,024
                                                                                                                   ==========
</TABLE>
                                     PF-14
<PAGE>
<TABLE>
<CAPTION>



                                                                                                                (000's)
                                                                                                              ------------
           <S>                                                                                              <C>
              * Cost of operations has been increased to reflect the pro forma cost of
                operations  of these  properties,  as if they were owned by AOPP
                throughout the entire period presented:
                *   Cost  of  operations  for  the  entire  year's  properties'
                    historical operations:
                        Baldon...............................................................               $    2,280
                        Largo................................................................                      367
                        Acquiport Properties.................................................                    3,059
                        Northpointe Property.................................................                      125
                        Ammendale Property...................................................                      640
                        March Acquisitions...................................................                    1,089
                 *  Less: the portion of cost of operations with respect to these
                    properties which has been included in AOPP's historical amounts..........                   (1,157)
                 *  Plus:  Pro forma adjustment to reflect additional estimated personnel
                    cost to manage the facilities and property taxes.........................                    1,356
                                                                                                                 -----
                                                                                                            $    7,759
                                                                                                            ==========

               * Depreciation has been increased to reflect a full year's depreciation
                 expense..............................................................                      $    5,526
                                                                                                            ===========      

               * Interest expense has been increased to reflect the historical interest
                 expense for each of the periods presented with respect to the assumption of
                 mortgage notes payable .....................................................                $    1,105
                                                                                                             ==========

3.   OTHER PRO FORMA ADJUSTMENTS
     ---------------------------

                                                                                                                (000's)
                                                                                                                ---------   

              * A pro forma adjustment has been made to increase general and
                administrative expense to reflect additional costs with respect to payroll
                as AOPP hires acquisition and executive personnel...........................                 $      300
                                                                                                             ==========


              * Many  of  the   properties   acquired   were  acquired  by  the
                consolidated  Operating  Partnership in exchange for OP Units of
                AOPP.  Such  ownership  interests  are  represented  as minority
                interest in the consolidated financial statements.  Accordingly,
                a pro  forma  adjustment  has been  made to  increase  "Minority
                interest in income" to reflect the incremental income associated
                with pro forma  adjustments  allocable to the minority  interest
                (representing the difference  between the pro forma amounts less
                the historical amounts included in AOPP's historical financial statements)......              $  (1,189)
                                                                                                              ========= 
</TABLE>
                                     PF-15
<PAGE>

4.  NET INCOME PER COMMON SHARE (AOPP PRE- MERGER PRO FORMA) HAS BEEN COMPUTED 
    AS FOLLOWS:
    --------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                           (000's)
                                                                                                        -------------      

<S>                                                                                                     <C>          
           Historical net income.........................................................               $   3,836,000

           Historical weighted average common shares.....................................                   2,641,258

           Historical net income per common share........................................               $       1.45

           Pro forma net income..........................................................               $  15,524,000

           Pro forma weighted average common shares (1)..................................                   9,913,981

           Pro forma net income per common share.........................................               $       1.57

- -----------------------------------------------------------------------------------------------------------------------------------
           (1)
           Historical weighted average shares (common and equivalents)...................                   2,641,258
           Adjusted for:

               Issuance of common shares in July 1997 in connection with property        
                  acquisitions...........................................................                     995,137

               Issuance of common stock to subsidiary of a state pension fund (on
                  December 24, 1997).....................................................                   2,913,016

               Issuance of common stock to subsidiary of a state pension fund in
                  connection with conversion of OP units into common stock...............                   1,512,718

               Pro forma issuance of common stock to institutional investors.............                   1,851,852
                                                                                                            ---------

                    Total Pre-Merger pro forma weighted average shares...................                   9,913,981
                                                                                                            =========
</TABLE>
                                     PF-16
<PAGE>


5.       PRO FORMA MERGER ADJUSTMENTS - EXCHANGE OF PROPERTIES:
         ------------------------------------------------------

          Concurrent with the Merger, PSP11 will exchange 11 mini-warehouses and
          two properties that combine mini-warehouse and commercial space for 11
          commercial properties owned by PSI.
<TABLE>
<CAPTION>

                                                                                                         (000's)
                                                                                                  ---------------       



                    *     Rental income- commercial properties has been increased to
                          reflect the rental income with respect to the 11 commercial
<S>                                                                                                <C>        
                          properties received through the Exchange.....................            $     8,008
                                                                                                   ===========


                    *     Rental income- mini-warehouses has been decreased to eliminate
                          the rental income with respect to the 11 mini-warehouse
                          facilities and two properties that combine mini-warehouse and
                          commercial space given up through the Exchange...............            $    (6,143)
                                                                                                   =========== 


                    *     A  pro forma adjustment has made to facility management fees to:

                          *   eliminate the historical facility management fees related
                              to 11 commercial properties acquired in the Exchange as such
                              fee will no longer be charged to these properties as AOPP
                              will own them............................................            $      (400)

                          *   eliminate the historical facility management fees related
                              to the two commercial properties of PSP11 acquired in the
                              Merger...................................................                    (71)
                                                                                               --------------------

                                                                                                   $      (471)
                                                                                                   ================ 


                     *     A pro  forma  adjustment  has  been  made  to cost of operations to:

                           *  eliminate historical management fees paid to AOPP to manage
                              PSP11's two commercial properties which are included in
                              historical amounts and as a result of the Merger will no
                              longer be incurred.......................................            $       (71)

                           *  reflect the cost of operations of the 11 commercial
                              properties acquired in the Exchange (before cost of     
                              management)..............................................                   3,249

                           *  reflect the cost of management for PSP11's two commercial
                              properties and the 11 commercial properties acquired in the
                              Exchange.................................................                     93
                                                                                                  -------------

                                                                                                   $     3,271
                                                                                                   ===========
                                     PF-17
<PAGE>

                     *    Cost  of   operations-   mini-warehouses   has   been
                          decreased to  eliminate  the cost of  operations  with
                          respect to the 11  mini-warehouse  facilities  and two
                          properties that combine  mini-warehouse and commercial
                          space given up through the
                          Exchange.....................................................            $    (2,082)


                      *   Cost of managing facilities has been decreased to eliminate
                          the historical cost of managing the two PSP11 commercial
                          properties and the 11 commercial properties acquired in the
                          Exchange,  such costs are reclassified to Cost of operations-
                          commercial properties........................................            $       (93)
                                                                                                   =========== 


                       *  A pro forma  adjustment has been made to depreciation
                          expense to reflect the:

                               *   Eliminate the historical depreciation expense of               $    (1,198)
                                   PSP11's facilities..................................

                               *   Record  depreciation  expense  based  on the
                                   acquired   cost   of  the   remaining   PSP11
                                   facilities  ($47,553,000  cost, 30% allocated
                                   to land,  the  remaining  cost  allocated  to
                                   1,344  buildings,  depreciated  straight-line
                                   over 25 years).                                                $     1,344
                                                                                                  -----------

                                                                                                   $     146
                                                                                                  -----------

                       *  A pro  forma  adjustment  has been  made to  interest
                          expense to  reflect  interest  expense  related to pro
                          forma  borrowings on AOPP's line of credit (see note 3
                          - Merger Pro Forma  Adjustments  -  Additional  merger
                          adjustments to the pro forma balance sheet)
                                                                                                   $       462
                                                                                                   ===========

                        *  A pro forma adjustment has been made to increase the minority
                           interests' share of income based upon its pro rata ownership
                           interest in the above pro forma adjustments..................            $      (168)
                                                                                                    =========== 


</TABLE>
                                     PF-18
<PAGE>
6.  POST-MERGER PRO FORMA NET INCOME PER SHARE OF COMMON STOCK HAS BEEN COMPUTED
    AS FOLLOWS:
    ----------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                                 Year Ended
                                                                                                            December 31, 1997
                                                                                                            -------------------
<S>                                                                                                             <C>           
           Post-Merger pro forma net income........................................................             $   18,526,000


           Post-Merger pro forma weighted average common shares (1)................................                 13,724,103

           Pro forma net income per share of Common Stock..........................................             $         1.35

- -----------------------------------------------------------------------------------------------------------------------------------
          (1)
           Pre-Merger pro forma weighted average shares from Note 4 above..........................                  9,913,981

           PSP11's  Series A shares  (see Note 4 to the Pro  Forma  Consolidated Balance Sheet -
                Assuming Maximum Cash Elections of 20%)............................................                  1,455,950

           PSP11's  Series  B and C (see  Note 4 to the Pro  Forma  Consolidated Balance Sheet-
                Assuming Maximum Cash Elections of 20%)............................................                    569,655

           Incremental  shares  issued  to  AOPP  shareholders  based  upon  the
                conversion of the Pre-Merger AOPP shares into PSP11  equivalents
                (9,913,981  shares  subtracted  from the  product  of  9,913,981
                multiplied by 1.18) (see Note 4 to the Pro Forma
                Consolidated Balance Sheet- Assuming Maximum Cash Elections of 20%)................                  1,784,517
                                                                                                                     ---------

           Post-Merger pro forma weighted average Common Stock common shares.......................                 13,724,103
                                                                                                                    ==========
</TABLE>

7.   MINORITY INTEREST:
     -----------------

     Minority  interest  represents  ownership  interests  of OP  Units  in  the
     consolidated  Operating  Partnership  which are not  owned by AOPP.  The OP
     Units,   subject  to  certain  conditions  of  the  Operating   Partnership
     Agreement,  are  convertible  into Common  Shares of AOPP on a  one-for-one
     basis. Pro forma weighted average OP Units  outstanding  during each period
     owned by minority  interests  totaled  7,350,754 (after  adjustment for the
     conversion  factor of 1.18).  The following table  summarizes the ownership
     interests:
<TABLE>
<CAPTION>

                                                                                                                 Year Ended
                                                                                                             December 31, 1997
                                                                                                             ------------------
           <S>                                                                                                   <C>       
           Pro forma AOPP Common Shares outstanding..............................................                   13,724,103
           Pro forma OP Units owned by minority  interests which are convertible into AOPP
                 Common Shares...................................................................                    7,350,754
                                                                                                             ------------------
                   Total AOPP Common Shares outstanding assuming conversion of OP Units..........                   21,074,857
                                                                                                             ==================

           Percentage ownership of AOPP Common Shares outstanding................................                     65.1%
           Percentage ownership of minority interests............................................                     34.9%
                                                                                                             ------------------
                Total ownership interest.........................................................                    100.0%
                                                                                                             ==================
</TABLE>
                                     PF-19
<PAGE>
<TABLE>
<CAPTION>

                             PS BUSINESS PARKS, INC.
                      PRO FORMA CONSOLIDATED BALANCE SHEET
                                December 31, 1997
                                   (Unaudited)
             (Amounts in thousands, except share and per share data)

                                                                    Assuming No Cash Elections
                                                                                AOPP
                                                                     --------------------------
                                                                     Pro Forma Adjustments           
                                                                     ---------------------           
                                                                                                     
                                                                                                     
                                                                        Property          Other      
                                                         AOPP         Acquisitions     Adjustments   
                      ASSETS                         (Historical)      ( Note 1)        (Note 2)     
                                                     ------------      ---------        --------     
<S>                                                  <C>            <C>               <C>            
Cash and cash equivalents                            $     3,884    $      (40,650)   $     41,200   
Real estate facilities, net of accumulated               314,238            55,795               -   
   depreciation
Intangible assets, net of accumulated amortization         3,272                 -               -   
Other assets                                               2,060                 -               -   
Purchase cost                                                  -                 -               -   
                                                     ------------      ---------        --------     
     Total assets                                    $   323,454    $       15,145    $     41,200   
                                                     ============      ===========      ==========   
       LIABILITIES AND SHAREHOLDERS' EQUITY
Accrued and other liabilities                        $     8,331    $            -    $     (2,900)  
Notes payable                                              3,500            14,735          (3,500)  
Minority interest                                        168,665               410         (30,297)  
Shareholder's equity:
Common stock , $.10 par value, 100,000,000 shares
    authorized, 6,549,411 issued and outstanding
    (14,088,090 pro forma shares                             655                               336   
    issued/outstanding)
   Series A                                                    -                 -               -   
   Series B                                                    -                 -               -   
   Series C                                                    -                 -               -   
   Paid-in capital                                       142,699                            77,561   
   Cumulative net income                                   3,154                 -               -   
   Cumulative distribution paid                           (3,550)                -               -   
                                                     ------------      -----------      ----------   
       Total shareholders' equity                        142,958                 -          77,897   
                                                     ------------      -----------      ----------   
   Total liabilities and shareholders' equity        $   323,454    $       15,145    $     41,200   
                                                     ============      ===========      ==========   

Book Value per share of Common Stock (Note 4)        $      21.83                                    
                                                     ============                                    

</TABLE>
<TABLE>
<CAPTION>

                             PS BUSINESS PARKS, INC.
                      PRO FORMA CONSOLIDATED BALANCE SHEET
                                December 31, 1997
                                   (Unaudited)
             (Amounts in thousands, except share and per share data)

                                                   
                                                   
                                                   
                                                                      Pro Forma Merger
                                                                      ----------------
                                                                       Adjustments                      PSBP
                                                                      ----------------             --------------
                                                   
                                                        PSP11         Purchase        Valuation     Post-Merger
                      ASSETS                         (Historical)     (Note 3)        (Note 3)      (Pro Forma)
                                                     ------------     --------        --------      -----------
<S>                                                 <C>            <C>              <C>            <C>          
Cash and cash equivalents                           $     2,455    $      (800)     $         -    $       6,089
Real estate facilities, net of accumulated               25,937              -           23,156          419,126
   depreciation
Intangible assets, net of accumulated amortization            -              -           (1,540)           1,732
Other assets                                                454              -                -            2,514
Purchase cost                                                 -         48,987          (48,987)               -
                                                     ------------     --------        --------      -----------
     Total assets                                   $    28,846    $    48,187      $   (27,371)   $     429,461
                                                     ============    =========        ==========    ============
       LIABILITIES AND SHAREHOLDERS' EQUITY
Accrued and other liabilities                       $     1,475    $                $         -    $       6,906
Notes payable                                                 -              -                -           14,735
Minority interest                                             -              -                -          138,778
Shareholder's equity:
Common stock , $.10 par value, 100,000,000 shares
    authorized, 6,549,411 issued and outstanding
    (14,088,090 pro forma shares                              -            239              179            1,409
    issued/outstanding)
   Series A                                                  18              -              (18)               -
   Series B                                                   2              -               (2)               -
   Series C                                                   5              -               (5)               -
   Paid-in capital                                       32,421         47,948          (32,600)         268,029
   Cumulative net income                                 29,451              -          (29,451)           3,154
   Cumulative distribution paid                         (34,526)             -           34,526           (3,550)
                                                     ------------     --------        ----------    ------------
       Total shareholders' equity                        27,371         48,187          (27,371)         269,042
                                                     ------------     --------        ----------    ------------
   Total liabilities and shareholders' equity       $    28,846    $    48,187      $   (27,371)   $     429,461
                                                     ============    =========        ==========    ============

Book Value per share of Common Stock (Note 4)       $      10.83                                   $      19.10
                                                     ============                                   ============

</TABLE>

    See Accompanying Notes to Pro Forma Consolidated Balance Sheet.
                                      PF-20

<PAGE>


                             PS BUSINESS PARKS, INC.
                  NOTES TO PRO FORMA CONSOLIDATED BALANCE SHEET
                                December 31, 1997
                                   (Unaudited)

                          (Assuming No Cash Elections)


1.    ACQUISITION OF REAL ESTATE FACILITIES
      -------------------------------------

     Same as Note 1 to Pro Forma  Consolidated  Balance Sheet (Assuming  Maximum
     Cash Elections of 20%).

2.    OTHER ADJUSTMENTS
      -----------------

     Same as note 2 to Pro Forma  Consolidated  Balance Sheet (Assuming  Maximum
     Cash Elections of 20%).

3.    MERGER PRO FORMA ADJUSTMENTS
      ----------------------------

     The Merger will be accounted  for using the purchase  method of  accounting
     with AOPP being the  accounting  acquirer.  The total purchase cost will be
     allocated  to  the   acquired  net  assets;   first  to  the  tangible  and
     identifiable  intangible  assets and liabilities  acquired based upon their
     respective  fair values,  and the remainder will be allocated to the excess
     of  purchase  cost  over  fair  value  of  assets  acquired,  if any.  Upon
     completion  of the Merger,  the  outstanding  shares of AOPP  common  stock
     (historical  shares  outstanding  at December  31, 1997  combined  with the
     shares issued in December 1997 and January 1998) will be converted  into an
     aggregate  of  11,698,498  shares of PSP11  Common  Stock and PSP11 will be
     renamed "PS Business Parks, Inc."

     In determining the cost of the Merger,  AOPP evaluated as a measure of cost
     of the Merger (i) the aggregate fair value of PSP11's net assets  acquired,
     (ii) the fair value of PSP11's Common Stock traded in the market, and (iii)
     the cash  election  price of $20.50 per share of PSP11 Common  Stock.  AOPP
     determined that the use of the cash price of $20.50 was a reliable  measure
     of the Merger cost; further, that such cash price was materially equivalent
     to the Merger cost had either of the other alternatives been chosen,  based
     upon the following:

     *    The fair value of the net assets of PSP11 were readily determinable as
          of August 15 1997(date the Merger was announced). Substantially all of
          the PSP11  assets  were  comprised  on real estate  facilities  having
          current appraised values as determined by independent appraisers.  The
          estimated  fair  value per share of PSP11  Common  Stock at August 15,
          1997  based upon the fair  values of the net assets was  approximately
          $20.50 per share.

     *    Since AOPP is the  accounting  acquirer,  AOPP's  common  stock market
          price would have been an indicator of the Merger cost. However, AOPP's
          common  stock is not  publicly  traded,  accordingly,  AOPP  evaluated
          PSP11's common stock as a determination of AOPP's implied common stock
          value.  The market price of PSP11's  Common Stock from January 1, 1997
          through  August 15, 1997 ranged from  $20-3/8 to $19-3/8.  The closing
          price of PSP11's Common Stock on August 15, 1997, was $20.00.  PSP11's
          trading price for the one month period after the  announcement  of the
          proposed Merger traded in the range from $19-15/16 to $20-9/16.

     *    Each outstanding share of PSP11 Common Stock will continue to be owned
          by current  holders or converted  into the right to receive  $20.50 in
          cash. The amount of cash elections will be limited to 20% of the total
          outstanding  shares of PSP11.  If a PSP11  shareholder  does not elect
          cash, he or she will  continue to own PSP11 Common  Stock.  Similarly,
          each share of AOPP  Common  Stock will be  converted  into either 1.18
          shares of PSP11  Common  Stock or the right to receive  $24.19 in cash
          (up to 20% of the outstanding AOPP Common Stock),  at the option of an
          AOPP shareholder.

     In determining the fair value of the net assets to be acquired,  historical
     carrying  values as of December  31, 1997 were used with respect to PSP11's
     other assets and accrued  liabilities since they approximate fair value and
     appraised  values  were  used  for  PSP11's  real  estate  facilities.  The
     aggregate  purchase cost and its  preliminary  allocation to the historical
     assets and liabilities is as follows:



                                     PF-21
<PAGE>
<TABLE>
<CAPTION>

                                                                                                       (in 000's)
                                                                                                       ----------
             PURCHASE COST:
             --------------

          *    Issuance of 1,819,937 shares of Common Stock to PSP11's Series
<S>                                    <C>                                                               <C>    
               A common shareholder at $20.50 per share.........................                         $37,309

          *    Issuance of 569,655 shares of Common Stock to the holders
               of  PSP11's  Common  Stock  Series B and Series C (707,071
               combined shares  outstanding  less  cancellation of 47,824
               shares of Series C the remaining of which is multiplied by
               the conversion ratio of 0.8641) at $20.50 per share.....................                    11,678
                                                                                                           ------
                       Total Purchase Cost.............................................                   $48,987
                                                                                                          =======

             PRELIMINARY ALLOCATION OF PURCHASE COST:
             ----------------------------------------

                    Cash............................................................                       $2,455
                    Other assets....................................................                          454
                    Accrued and other liabilities...................................                       (1,475)
                    Real estate facilities (fair value of $48,000,000 less $447,000
                      of excess aggregate fair values of net assets acquired over
                      purchase cost)................................................                       47,553
                                                                                                           ------
                                                                                                          $48,987
                                                                                                          =======


     The following pro forma adjustments have been made to reflect the Merger as of December 31, 1997:

                                                                                                         (in 000's)
                                                                                                         ----------
             PURCHASE ADJUSTMENTS:
             ---------------------

              *  Cash and cash  equivalents has been reduced to reflect to
                 cash necessary to fund estimated direct costs and expenses
                 of the Merger....................................................                        $(800)
                                                                                                          ========

              *  Unallocated purchase cost has been increased to reflect the
                 aggregate purchase cost.......................................                          $48,987
                                                                                                          =======

              *  Common stock has been increased to reflect the issuance of
                 2,389,592 shares with a par value of $0.10 per share..........                            $239
                                                                                                        =======

              *  Paid-in   Capital  has  been  increased  to  reflect  the
                 issuance of common  stock  ($48,987,000  less par value of $239,000 and
                 estimated direct costs and expenses of the Merger of $800,000)..                       $47,948
                                                                                                        =======
                                     PF-21
<PAGE>

     VALUATION ADJUSTMENTS:
     ----------------------

                                                                                                       (in 000's)
                                                                                                      -------------        
              *   Unallocated purchase cost has been decreased to reflect the
                  allocation of the aggregate purchase cost............................                $    (48,987)
                                                                                                      ==============

              *   Real estate facilities has been increased to reflect the fair
                  value of the real  estate  facilities  to be  acquired  in the
                  Merger  (purchase price allocation of $47,553,000 plus related
                  net  cost  of  management   contracts  with  respect  to  such
                  properties ($1,540,000) less PSP11
                  historical net book value of $25,937,000)............................                $     23,156
                                                                                                      ==============

              *   AOPP's  intangible  assets  have been  reduced to reflect the
                  reclassification  to real estate with respect to the above pro
                  forma
                  adjustment...........................................................                $     (1,540)
                                                                                                      ==============

              *   PSP11's historical equity has been eliminated as follows:
                      Series A common stock............................................                          (2)
                      Series B common stock............................................                          (5)
                      Series C common stock............................................                     (32,421)
                      Paid-in capital..................................................                     (29,451)
                      Cumulative net income............................................                      34,526
                      Cumulative distributions.........................................         ---------------------
                                                                                                       $    (27,371)
                                                                                                      ==============


     ADDITIONAL MERGER RELATED ADJUSTMENTS:
     --------------------------------------

     The following pro forma  adjustments have been made to reflect the issuance
     of common  stock to AOPP  shareholders  pursuant to the terms of the Merger
     Agreement.

                                                                                                       (in 000's)

              *   Common  stock has been  increased  to reflect the issuance of
                  1,784,517  shares  (par  value  of  $0.10  per  share)  to the
                  shareholders  of AOPP to  adjust  to the  terms of the  Merger
                  Agreement  (9,913,981  pro  forma  shares  multiplied  by  the
                  conversion ratio of 1.18 less
                  9,913,981 shares)....................................................                $         179
                                                                                                      ==============

              *   Paid-in capital has been decreased to reflect the issuance of
                  the above common stock to AOPP shareholders.......................                   $        (179)
                                                                                                      ==============

</TABLE>
     EXCHANGE OF PROPERTIES
     ----------------------

     Same as Note 3 to Pro Forma  Consolidated  Balance Sheet (Assuming  Maximum
     Cash Elections of 20%) - "Exchange of Properties."

                                     PF-23
<PAGE>

4.    BOOK VALUE PER SHARE OF COMMON STOCK
      ------------------------------------

     Book value per share has been  determined by dividing  total  shareholders'
     equity by the outstanding shares of Common Stock. The following  summarizes
     the shares outstanding:
<TABLE>
<CAPTION>

                                                                                                     Common shares
                                                                                                      outstanding
                                                                                                      -----------

            <S>                                                                                        <C>      
              *   AOPP historical shares outstanding at December 31, 1997............                    6,549,411
              *   AOPP shares issued to subsidiary of state pension fund in
                  connection with conversion of its OP units into common stock of AOPP                   1,512,718
              *   Pro forma shares issued to institutional investor group............                    1,851,852
                                                                                                         ---------

                              Pre-Merger pro forma AOPP shares outstanding............                    9,913,981

              *   PSP11's Series A shares (Assuming no Cash Elections,  see
                 "Purchase cost" above)..............................................                    1,819,937

              *   PSP11's Series B and C (see "Purchase cost" above).................                      569,655

              *   Incremental shares issued to AOPP shareholders based upon the
                  conversion   of  the   Pre-Merger   AOPP   shares  into  PSP11
                  equivalents  (9,913,981 pro forma shares  subtracted  from the
                  product of  9,913,981 multiplied by 1.18).......................................        1,784,517
                                                                                                          ---------

                              Post-Merger AOPP pro forma shares outstanding...........                   14,088,090
                                                                                                         ==========





</TABLE>
                                     PF-24
<PAGE>
<TABLE>
<CAPTION>

                             PS BUSINESS PARKS, INC.
              NOTES TO PRO FORMA CONSOLIDATED STATEMENTS OF INCOME
                      For the Year Ended December 31, 1997
                                   (Unaudited)
                          (Assuming No Cash Elections)

                                                                     AOPP                  
                                                                                           
                                                            Pro Forma Adjustments          
                                                      Acquisition of    Acquisition of     
                                                        real estate    real estate from    
                                           AOPP       from affiliates   third parties      
                                       (Historical)      (Note 1)          (Note 2)        
                                       ----------------------------------------------------
REVENUES:
   Rental income:
<S>                                     <C>            <C>             <C>                 
     Commercial properties              $   30,169     $    1,038      $   27,024          
     Mini-warehouse properties                   -              -               -          
   Facility management fees                    956            (52)              -          
   Interest and other income                   453              -               -          
                                       ----------------------------------------------------
                                            31,578            986          27,024          
                                       ----------------------------------------------------
EXPENSES:
   Cost of operations:
     Commercial properties                  12,330            363           7,759          
     Mini-warehouse properties                   -              -               -          
   Cost of managing facilities                 189            (12)              -          
   Depreciation and amortization             5,195             92           5,526          
   General and administrative                1,461              -               -          
   Interest Expense                              1              -           1,105          
                                       ----------------------------------------------------
                                            19,176            443          14,390          
                                       ----------------------------------------------------
   Income before minority interest
     in income                              12,402            543          12,634          
   Minority interest in income (Note 7)     (8,566)             -               -          
                                       ----------------------------------------------------

   Net income (loss)                        $3,836           $543         $12,634          
                                        ===================================================


   PER SHARE OF COMMON STOCK:
   Net income (Notes 4 and 6)           $     1.45                                         
                                        ==========                                         
   Weighted average shares                   2,641                                         
                                        ==========                                         
</TABLE>
<TABLE>
<CAPTION>

                             PS BUSINESS PARKS, INC.
              NOTES TO PRO FORMA CONSOLIDATED STATEMENTS OF INCOME
                      For the Year Ended December 31, 1997
                                   (Unaudited)
                          (Assuming No Cash Elections)

                                                                     AOPP                                                       
                                                                                                                                
                                                                                        Adjustments
                                                                                        Exchange of
                                           Other            AOPP                        real estate        PSBP
                                        adjustments      Pre-Merger        PSP11        facilities      Post-Merger
                                          (Note 3)      (Pro forma)    (Historical)      (Note 5)       (Pro forma)
                                     ------------------------------------------------------------------------------
REVENUES:
   Rental income:
<S>                                     <C>             <C>             <C>            <C>              <C>       
     Commercial properties              $        -      $   58,231      $    1,418     $    8,008       $   67,657
     Mini-warehouse properties                   -               -           6,143         (6,143)               -
   Facility management fees                      -             904               -           (471)             433
   Interest and other income                     -             453              82              -              535
                                     ------------------------------------------------------------------------------
                                                 -          59,588           7,643          1,394           68,625
                                     ------------------------------------------------------------------------------
EXPENSES:
   Cost of operations:
     Commercial properties                       -          20,452             682          3,271           24,405
     Mini-warehouse properties                   -               -           2,082         (2,082)               -
   Cost of managing facilities                   -             177               -            (93)              84
   Depreciation and amortization                 -          10,813           1,198            146           12,157
   General and administrative                  300           1,761             201              -            1,962
   Interest Expense                              -           1,106               -              -            1,106
                                     ------------------------------------------------------------------------------
                                               300          34,309           4,163          1,242           39,714
                                     ------------------------------------------------------------------------------
   Income before minority interest
     in income                                (300)         25,279           3,480            152           28,911
   Minority interest in income (Note        (1,189)         (9,755)              -           (158)          (9,913)
                                     ------------------------------------------------------------------------------

   Net income (loss)                       $(1,489)        $15,524          $3,480            $(6)         $18,998
                                     =============================================================================


   PER SHARE OF COMMON STOCK:
   Net income (Notes 4 and 6)                           $     1.57      $     1.38                      $     1.35
                                                        ===========     ===========                     ==========
   Weighted average shares                                   9,914           2,527                          14,088
                                                        ===========     ===========                     ==========
</TABLE>
         See Accompanying Notes to Pro Forma Consolidated Balance Sheet.
                                      PF-25

<PAGE>

1.  ACQUISITION OF REAL ESTATE FACILITIES FROM AFFILIATES
    -----------------------------------------------------

     Same as Note 1 to the Pro Forma Consolidated Statements of Income (Assuming
     Maximum Cash Elections of 20%).

2.  ACQUISITION OF REAL ESTATE FACILITIES FROM THIRD PARTIES
    -----------------------------------------------------

     Same as Note 2 to the Pro Forma Consolidated Statements of Income (Assuming
     Maximum Cash Elections of 20%).

3.  OTHER PRO FORMA ADJUSTMENTS
    --------------------------

     Same as Note 3 to the Pro Forma Consolidated Statements of Income (Assuming
     Maximum Cash Elections of 20%).

4.   NET INCOME PER COMMON SHARE (AOPP PRE- MERGER PRO FORMA) HAS BEEN COMPUTED 
     AS FOLLOWS:
     --------------------------------------------------------------------------
<TABLE>
<CAPTION>

                                                                                                                     (000's)
                                                                                                                   ----------

<S>                                                                                                                <C>       
           Historical net income ....................................................                              $3,836,000

           Historical weighted average common shares.................................                               2,641,258

           Historical net income (loss) per common share.............................                                  $1.45


           Pro forma net income......................................................                             $15,524,000

           Pro forma weighted average common shares (1)..............................                               9,913,981

           Pro forma net income per common share.....................................                                  $1.57


- -----------------------------------------------------------------------------------------------------------------------------------
           (1)
           Historical weighted average shares (common and equivalents)...............                               2,641,258

           Adjusted for:

               Issuance of common shares in July 1997 in connection with property
                  acquisitions.......................................................                                 995,137

               Issuance of common stock to subsidiary of a state pension fund on
                  December 24, 1997..................................................                               2,913,016

               Issuance of common stock to subsidiary of a state pension fund in
                  connection  with conversion of its OP units into common shares
                  of AOPP Inc...........................................................                            1,512,718

               Issuance of common stock to institutional investor group                                             1,851,852
                                                                                                                   ----------

                    Total Pre-Merger pro forma weighted average shares...............                               9,913,981
                                                                                                                   ==========

</TABLE>
                                     PF-26
<PAGE>


5.   PRO FORMA MERGER ADJUSTMENTS - EXCHANGE OF PROPERTIES:
     ------------------------------------------------------

     Concurrent with the Merger,  PSP11 will exchange 11 mini-warehouses and two
     properties  that  combine   mini-warehouse  and  commercial  space  for  11
     commercial properties owned by PSI.
<TABLE>
<CAPTION>


                                                                                                              (000's)
                                                                                                              -------


          <S>                                                                                               <C>
            *   Rental  income-  commercial  properties  has been  increased to
                reflect  the rental  income  with  respect to the 11  commercial
                properties received through the Exchange                                                        $8,008
                                                                                                       ===================
                                                        


            *   Rental income-  mini-warehouses has been decreased to eliminate
                the  rental  income  with  respect  to  the  11   mini-warehouse
                facilities and two properties  that combine  mini-warehouse  and
                commercial space given up through the Exchange.                                                 $(6,143)
                                                                                                       ===================
                                                              


             *   A pro forma adjustment has made to facility management fees to:

                 *  eliminate the historical facility management fees related to
                    11 commercial properties acquired in the Exchange as such fee
                    will no longer be charged to these properties as AOPP will own them                          $(400)

                 *  eliminate the historical facility management fees related to 
                    the two commercial properties of PSP11 acquired in the Merger                                 (71)
                                                                                                      -------------------
                                                                                                                 $(471)
                                                                                                      ===================


              *  A pro forma adjustment has been made to cost of operations to:

                 *  eliminate historical management fees paid to AOPP to manage 
                    PSP11's two commercial properties which are included in 
                    historical amounts and as a result of the Merger will no 
                    longer be incurred                                                                            $(71)

                 *  reflect the cost of operations of the 11 commercial properties 
                    acquired in the Exchange (before cost of management)                                         3,249
                                                                       
                 *  reflect the cost of management for the PSP11's two commercial 
                    properties and the 11 commercial properties acquired in the Exchange                            93
                                                                                        
                                                                                                      -------------------

                                                                                                                $3,271
                                                                                                       ===================
               *  Cost of  operations-  mini-warehouses  has  been  decreased  to
                  eliminate  the  cost  of  operations  with  respect  to  the  11
                  mini-warehouse   facilities  and  two  properties  that  combine
                  mini-warehouse   and  commercial  space  given  up  through  the
                  Exchange.                                                                                    $(2,082)
                                                                                                       ===================
                           
                                     PF-27
<PAGE>


                * Cost of managing facilities has been decreased to eliminate the historical cost of
                  managing the two PSP11 commercial properties and the 11 commercial
                  properties acquired in the Exchange,  such costs are reclassified to Cost
                  of operations- commercial properties......................................                      $(93)
                                                                                                       ===================


                * A pro forma adjustment has been made to:

                      *   Eliminate the historical depreciation expense of PSP11's facilities                  $(1,198)

                      *  Record depreciation expense based on the acquired cost
                         of the remaining PSP11  facilities  ($47,553,000  cost,
                         30% allocated to land,  the remaining cost allocated to
                         buildings, depreciated straight-line over 25 years).
                                                                                                                  1,344
                                                                                                      -------------------

                                                                                                                  $146
                                                                                                       ===================

                *   A pro forma adjustment has been made to increase the minority interests'
                    share of income based upon its pro rata ownership interest................                   $(158)
                                                                                                       ===================



                                     PF-28
<PAGE>



6.  PRO FORMA NET INCOME PER SHARE OF COMMON STOCK HAS BEEN COMPUTED AS FOLLOWS:
    ----------------------------------------------------------------------------


                                                                                                              (000's)
                                                                                                              -------


           Post-Merger pro forma net income...............................................                 $18,998,000


           Post-Merger pro forma weighted average Common Stock common shares (1)..........                  14,088,090

           Pro forma net income per share of Common Stock.................................                      $1.35
           -------------------------------------------------------------------------------------

           (1)
           Pre-Merger pro forma weighted average shares from Note 4 above.............                      9,913,981

           PSP11's Series A shares (see Note 4 to the Pro Forma Consolidated Balance
                Sheet)................................................................                      1,819,937

           PSP11's Series B and C (see Note 4 to the Pro Forma Consolidated Balance
                Sheet)................................................................                        569,655

           Incremental  shares  issued  to  AOPP  shareholders  based  upon  the
                conversion of the Pre-Merger AOPP shares into PSP11  equivalents
                (9,913,981  shares  subtracted  from the  product  of  9,913,981
                multiplied by 1.18) (see Note
                4 to the Pro Forma Consolidated Balance Sheet)........................                      1,784,517
                -                                                                                           ---------

           Post-Merger pro forma weighted average Common Stock common shares .........                     14,088,090
                                                                                                           ==========

</TABLE>
                                     PF-29
<PAGE>

7.  MINORITY INTEREST:

     Minority  interest  represents  ownership  interests  of OP  Units  in  the
     consolidated  Operating  Partnership  which are not  owned by AOPP.  The OP
     Units,   subject  to  certain  conditions  of  the  Operating   Partnership
     Agreement,  are  convertible  into Common  Shares of AOPP on a  one-for-one
     basis. Pro forma weighted average OP Units outstanding  during each periods
     owned  by  minority  interests  totaled  7,350,754  (after  adjustment  for
     conversion  factor of 1.18 and the impact of the stock dividend in December
     1997).  The following  summarizes the ownership  interests in the Pro forma
     Consolidated Financial Statements:
<TABLE>
<CAPTION>

                                                                                                            Year Ended
                                                                                                         December 31, 1997
                                                                                                         ------------------

<S>                                                                                                        <C>       
           Pro forma AOPP Common Shares outstanding...................................                     14,088,090

           Pro forma OP Units owned by minority interests which are convertible into
                AOPP Common Shares....................................................                      7,350,754
                                                                                                           ----------- 

                Total AOPP Common Shares outstanding  assuming  conversion of OP 
                Units..                                                                                    21,438,844
                                                                                                           ===========
                       


           Percentage ownership of AOPP Common Shares outstanding.....................                          65.7%

           Percentage ownership of minority interests.................................                          34.3%
                                                                                                           ----------- 

                Total ownership interest..............................................                         100.0%
                                                                                                           ===========
                                     PF-30
</TABLE>


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