SPIEKER PROPERTIES INC
424B2, 1997-10-08
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>   1
                                               Filed Pursuant to Rule 424(b)(2)
                                               Registration No. 333-35997-01

 
           PROSPECTUS SUPPLEMENT TO PROSPECTUS DATED OCTOBER 1, 1997
 
                                6,000,000 SHARES
 
                            SPIEKER PROPERTIES, INC.
[SPIEKER LOGO]
 
                 SERIES C CUMULATIVE REDEEMABLE PREFERRED STOCK
                   (LIQUIDATION PREFERENCE $25.00 PER SHARE)
                            ------------------------
 
    Spieker Properties, Inc. (the "Company"), a leading real estate investment
trust that specializes in the acquisition, development and management of
suburban office and industrial properties, is hereby offering 6,000,000 shares
of Series C Cumulative Redeemable Preferred Stock ("Series C Preferred Stock").
Dividends on the Series C Preferred Stock will be cumulative from the date of
original issue and will be payable quarterly in arrears on or about the last day
of January, April, July and October of each year, commencing October 31, 1997,
at the rate of 7 7/8% of the liquidation preference per annum. See "Description
of Series C Preferred Stock -- Dividends."
 
    The shares of Stock C Preferred Stock are not redeemable prior to October
10, 2002. On and after October 10, 2002, the Series C Preferred Stock may be
redeemed for cash at the option of the Company, in whole or in part, at a
redemption price of $25.00 per share, plus accrued and unpaid dividends, if any,
thereon. The redemption price (other than the portion thereof consisting of
accrued and unpaid dividends) is payable solely out of the sale proceeds of
other capital stock of the Company. The Series C Preferred Stock will not be
subject to any sinking fund or mandatory redemption and will not be convertible
into any other securities of the Company. See "Description of Series C Preferred
Stock -- Redemption." No person or persons acting as a group may beneficially
own more than 9.9% of the value of the outstanding capital stock of the Company,
including the Series C Preferred Stock, with limited exceptions. See
"Description of Series C Preferred Stock -- Restrictions on Ownership."
 
    Application will be made to have the Series C Preferred Stock approved for
listing on the New York Stock Exchange under the symbol "SPKPrC." Trading of the
Series C Preferred Stock on the New York Stock Exchange is expected to commence
within a 30-day period after the initial delivery of the Series C Preferred
Stock. See "Underwriting."
 
    The Company is offering 4,400,000 shares of Series C Preferred Stock through
the Underwriters named below and 1,600,000 shares of Series C Preferred Stock
directly to an institutional investor. See "Concurrent Offering."
 
    The shares of Series C Preferred Stock are subject to certain restrictions
on ownership designed to preserve the Company's status as a real estate
investment trust for federal income tax purposes. See "Description of Capital
Stock" in the accompanying Prospectus.
                            ------------------------
 
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS SUPPLEMENT OR THE PROSPECTUS TO WHICH IT
                                    RELATES.
           ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                            ------------------------
 
<TABLE>
<CAPTION>
                                                         INITIAL PUBLIC       UNDERWRITING      PROCEEDS TO
                                                        OFFERING PRICE(1)     DISCOUNT(2)      COMPANY(1)(3)
                                                        -----------------     ------------     -------------
        <S>                                             <C>                   <C>              <C>
        Per Share.....................................      $25.00              $0.7875          $24.2125
        Total.........................................   $150,000,000          $3,465,000      $146,535,000
</TABLE>
 
- ---------------
 
(1) Plus accrued dividends, if any, from October 10, 1997.
 
(2) The Company and Spieker Properties, L.P. have agreed to indemnify the
    Underwriters against certain liabilities, including liabilities under the
    Securities Act of 1933. See "Underwriting."
 
(3) Before deducting estimated expenses of $50,000 payable by the Company. The
    Underwriters will receive no discount or commission on the sale of the
    Series C Preferred Stock in the Concurrent Offering. See "Concurrent
    Offering."
                            ------------------------
 
    These shares are offered severally by the Underwriters, as specified herein,
subject to receipt and acceptance by them and subject to their right to reject
any order in whole or in part. It is expected that certificates for the shares
will be ready for delivery in New York, New York, on or about October 10, 1997,
against payment therefor in immediately available funds.
 
GOLDMAN, SACHS & CO.
             DONALDSON, LUFKIN & JENRETTE
               SECURITIES CORPORATION
                          MERRILL LYNCH & CO.
 
                                     MORGAN STANLEY DEAN WITTER
 
                                              PRUDENTIAL SECURITIES INCORPORATED
 
                            ------------------------
 
           The date of this Prospectus Supplement is October 7, 1997.
<PAGE>   2
 
     IN CONNECTION WITH THE OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE SERIES C
PREFERRED STOCK AT A LEVEL ABOVE THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN
MARKET. SUCH TRANSACTIONS MAY BE EFFECTED ON THE NEW YORK STOCK EXCHANGE, IN THE
OVER-THE-COUNTER MARKET OR OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE
DISCONTINUED AT ANY TIME.
 
     CERTAIN PERSONS PARTICIPATING IN THE OFFERING MAY ENGAGE IN TRANSACTIONS
THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE SHARES, INCLUDING
OVER-ALLOTMENT, STABILIZING AND SHORT-COVERING TRANSACTIONS IN SUCH SHARES, AND
THE IMPOSITION OF A PENALTY BID, IN CONNECTION WITH THE OFFERING. FOR A
DESCRIPTION OF THESE ACTIVITIES, SEE "UNDERWRITING."
 
                                       S-2
<PAGE>   3
 
                                  THE OFFERING
 
     For a more complete description of the terms of the Series C Preferred
Stock specified in the following summary, see "Description of Series C Preferred
Stock."
 
SECURITIES OFFERED............   6,000,000 shares of Series C Preferred Stock.
 
RANKING.......................   With respect to the payment of dividends and
                                 amounts upon liquidation, the Series C
                                 Preferred Stock will rank pari passu with the
                                 Company's Series A and Series B Preferred Stock
                                 and will rank senior to the Company's Common
                                 Stock, Class B Common Stock and Class C Common
                                 Stock.
 
USE OF PROCEEDS...............   The net proceeds to the Company from the
                                 Offering and the concurrent offering (the
                                 "Concurrent Offering") will be used for funding
                                 pending property acquisitions. See "Use of
                                 Proceeds."
 
DIVIDENDS.....................   Dividends on the Series C Preferred Stock will
                                 be cumulative from the date of original issue
                                 and are payable quarterly on or about the last
                                 day of January, April, July and October of each
                                 year, commencing October 31, 1997, at the rate
                                 of 7 7/8% of the initial liquidation preference
                                 per annum (equivalent to $1.96875 per share per
                                 annum). Dividends on the Series C Preferred
                                 Stock will accrue whether or not the Company
                                 has earnings, whether or not there are funds
                                 legally available for the payment of such
                                 dividends and whether or not such dividends are
                                 declared. See "Description of Series C
                                 Preferred Stock -- Dividends."
 
LIQUIDATION RIGHTS............   The liquidation preference for each share of
                                 Series C Preferred Stock is $25.00, plus an
                                 amount equal to accrued and unpaid dividends,
                                 if any. See "Description of Series C Preferred
                                 Stock -- Liquidation Rights."
 
REDEMPTION....................   Except in certain circumstances relating to the
                                 preservation of the Company's status as a REIT,
                                 shares of the Series C Preferred Stock are not
                                 redeemable prior to October 10, 2002. See
                                 "Description of Preferred Stock -- Restrictions
                                 on Transfer" in the accompanying Prospectus. On
                                 and after October 10, 2002, the Series C
                                 Preferred Stock may be redeemed for cash at the
                                 option of the Company, in whole or in part, at
                                 a redemption price of $25.00 per share, plus
                                 accrued and unpaid dividends, if any, thereon.
                                 The redemption price (other than the portion
                                 thereof consisting of accrued and unpaid
                                 dividends) is payable solely out of the sale
                                 proceeds of other capital stock of the Company,
                                 which may include Common Stock, Preferred
                                 Stock, depositary shares, interests,
                                 participations or other ownership interests in
                                 the Company, however designated (other than
                                 debt securities convertible into or
                                 exchangeable for capital stock) and any rights,
                                 warrants or options to purchase any thereof
                                 (collectively, "Capital Stock"). See
                                 "Description of Series C Preferred
                                 Stock -- Redemption."
 
VOTING RIGHTS.................   Except as described herein and in the
                                 accompanying Prospectus, holders of Series C
                                 Preferred Stock will not have any voting
                                 rights. In any matter in which the Series C
                                 Preferred Stock may vote (as expressly provided
                                 herein, or as may be required by
 
                                       S-3
<PAGE>   4
 
                                 law), each share of Series C Preferred Stock
                                 will be entitled to one vote. For further
                                 information regarding the voting rights of the
                                 holders of Series C Preferred Stock, see
                                 "Description of Series C Preferred
                                 Stock -- Voting Rights."
 
OWNERSHIP LIMITS..............   Ownership of more than 9.9% of the value of the
                                 outstanding shares of Common Stock and
                                 Preferred Stock of the Company, including the
                                 Series C Preferred Stock offered hereby, is
                                 restricted in order to preserve the Company's
                                 status as a REIT for federal income tax
                                 purposes. See "Description of Capital
                                 Stock -- Restrictions on Transfer" in the
                                 accompanying Prospectus.
 
TRADING.......................   Application will be made to have the Series C
                                 Preferred Stock approved for listing on the New
                                 York Stock Exchange under the symbol "SPKPrC".
                                 Trading of the Series C Preferred Stock on the
                                 New York Stock Exchange is expected to commence
                                 within a 30-day period after the initial
                                 delivery of the Series C Preferred Stock.
 
                              CONCURRENT OFFERING
 
     In addition to the 4,400,000 shares of Series C Preferred Stock offered
through the Underwriters, the Company is offering 1,600,000 shares of Series C
Preferred Stock directly to an institutional investor. The Company will issue
and sell such shares directly to such investor. The Underwriters will receive no
discount or commission on the sale of the Series C Preferred Stock in the
Concurrent Offering.
 
                                       S-4
<PAGE>   5
 
                    DESCRIPTION OF SERIES C PREFERRED STOCK
 
     The following summary sets forth the material terms and provisions of the
Series C Preferred Stock and is qualified in its entirety by reference to the
terms and provisions of the Articles Supplementary relating to the Series C
Preferred Stock and the Company's Charter, as amended, which are incorporated by
reference herein. The following description of the particular terms of the
Series C Preferred Stock supplements, and to the extent inconsistent therewith
replaces, the description of the general terms and provisions of the Preferred
Stock set forth in the accompanying Prospectus, to which description reference
is hereby made.
 
GENERAL
 
     Subject to limitations prescribed by Maryland law and the Company's
Charter, the Board of Directors is authorized to issue, from the authorized but
unissued capital stock of the Company, Preferred Stock in such classes or series
as the Board of Directors may determine and to establish from time to time the
number of shares of Preferred Stock to be included in any such series and to fix
the designation and any preferences, conversion and other rights, voting powers,
restrictions, limitations as to dividends, qualifications and terms and
conditions of redemption of the shares of each such series. The Company
currently has outstanding 1,000,000 shares of Series A Preferred Stock (the
"Series A Preferred Stock") and 4,250,000 shares of Series B Cumulative
Redeemable Preferred Stock (the "Series B Preferred Stock"). The Board of
Directors has authorized the Company to classify and issue the Series C
Preferred Stock. The Series A Preferred Stock, Series B Preferred Stock and the
Series C Preferred Stock will rank on a parity as to dividends and amounts upon
liquidation.
 
     When issued, the Series C Preferred Stock will be validly issued, fully
paid and nonassessable. The holders of the Series C Preferred Stock will have no
preemptive rights with respect to any shares of the capital stock of the Company
or any other securities of the Company convertible into or carrying rights or
options to purchase any such stock. The Series C Preferred Stock will not be
subject to any sinking fund or other obligation of the Company to redeem or
retire the Series C Preferred Stock.
 
     The transfer agent, registrar and distribution disbursing agent for the
Series C Preferred Stock will be The Bank of New York.
 
DIVIDENDS
 
     Holders of the Series C Preferred Stock shall be entitled to receive, when
and as declared by the Board of Directors, out of funds legally available for
the payment of dividends, cumulative preferential cash dividends at the rate of
7 7/8% of the initial liquidation preference per annum (equivalent to $1.96875
per share per annum). Such dividends shall be cumulative from the date of
original issue and shall be payable quarterly in arrears on the last day of
January, April, July and October or, if not a business day, the next succeeding
business day (each, a "Dividend Payment Date"). The first dividend, which will
be due on October 31, 1997, will be for less than a full quarter. Such first
dividend and any dividend distribution payable on the Series C Preferred Stock
for any partial distribution period will be computed on the basis of a 360-day
year consisting of twelve 30-day months. Dividends will be payable to holders of
record as they appear in the records of the Company at the close of business on
the applicable record date, which shall be on such date designated by the Board
of Directors of the Company for the payment of dividends that is not more than
50 nor less than 10 days prior to such Dividend Payment Date (each, a "Dividend
Record Date").
 
     Dividends on the Series C Preferred Stock will accrue whether or not the
Company has earnings, whether or not there are funds legally available for the
payment of such dividends and whether or not such dividends are declared. No
interest, or sum of money in lieu of interest, shall be payable in respect of
any dividend payment or payments on Series C Preferred Stock which may be in
arrears. Holders of the Series C Preferred Stock will not be entitled to any
dividends in excess of the full cumulative dividends as described above.
 
                                       S-5
<PAGE>   6
 
     If, for any taxable year, the Company elects to designate as "capital gain
distributions" (as defined in Section 857 of the Internal Revenue Code of 1986,
as amended (the "Code")) any portion (the "Capital Gains Amount") of the total
distributions (as determined for federal income tax purposes) paid or made
available for the year to holders of all classes of capital stock (the "Total
Distributions"), then the portion of the Capital Gains Amount that shall be
allocable to holders of Series C Preferred Stock shall be in the same portion
that the Total Distributions paid or made available to the holders of the Series
C Preferred Stock for the year bears to the Total Distributions.
 
     If any shares of Series C Preferred Stock are outstanding, no dividends
shall be declared or paid or set apart for payment on any series of capital
stock of the Company ranking, as to dividends, on a parity with or junior to the
Series C Preferred Stock for any period unless full cumulative dividends have
been or contemporaneously are declared and paid or declared and a sum sufficient
for the payment thereof set apart for such payments on the Series C Preferred
Stock for all past dividend periods and the then current dividend period. When
dividends are not paid in full (or a sum sufficient for such full payment is not
set apart) upon the Series C Preferred Stock and the stock of any other series
of capital stock ranking on parity as to dividends with the Series C Preferred
Stock, all dividends declared upon Series C Preferred Stock and any other series
of capital stock ranking on a parity as to dividends with the Series C Preferred
Stock shall be declared pro rata so that the amount of dividends declared per
share on the Series C Preferred Stock and such other series of capital stock
shall in all cases bear to each other the same ratio that accrued dividends per
share on the Series C Preferred Stock and such other series of capital stock
bear to each other.
 
     Except as provided in the immediately preceding paragraph, unless full
cumulative dividends on the Series C Preferred Stock have been or
contemporaneously are declared and paid or declared and a sum sufficient for the
payment thereof set apart for payment for all past dividend periods and the then
current dividend period, no dividends (other than in Common Stock or other
capital stock ranking junior to the Series C Preferred Stock as to dividends and
upon liquidation) shall be declared or paid or set aside for payment or other
dividend shall be declared or made upon the Common Stock, Class B Common Stock,
Class C Common Stock, Series A Preferred Stock, Series B Preferred Stock or any
other capital stock of the Company ranking junior to or on a parity with the
Series C Preferred Stock as to dividends or amounts upon liquidation, nor shall
any Common Stock, Class B Common Stock, Class C Common Stock, Series A Preferred
Stock, Series B Preferred Stock or any other capital stock of the Company
ranking junior to or on a parity with the Series C Preferred Stock as to
dividends or amounts upon liquidation be redeemed, purchased or otherwise
acquired for any consideration (or any moneys be paid to or made available for a
sinking fund for the redemption of any such stock) by the Company (except by
conversion into or exchange for other capital stock of the Company ranking
junior to the Series C Preferred Stock as to dividends and amounts upon
liquidation).
 
     Spieker Properties, L.P. (the "Operating Partnership") will be required to
make distributions to the Company that will mirror the Company's payment of
dividends on the Series C Preferred Stock (including accrued and unpaid
dividends upon redemption, and of the liquidation preference amount of the
Series C Preferred Stock) prior to any distribution of cash or assets to the
holders of Partnership Units or to the holders of any other interests in the
Operating Partnership, except for distributions on preferred Partnership Units
or required in connection with any other capital stock of the Company ranking on
a parity with the Series C Preferred Stock as to dividends and/or amounts upon
liquidation. The Company has currently outstanding 1,000,000 shares of Series A
Preferred Stock and 4,250,000 shares of Series B Preferred Stock, both of which
rank pari passu with the Series C Preferred Stock as to dividends and amounts
upon liquidation. The dividend rate for the Series A Preferred Stock is equal to
the dividend rate on the Common Stock (as determined on an as-converted basis
for the Series A Preferred Stock), provided that in no event will the dividend
rate on the Series A Preferred Stock be less than the initial dividend rate on
such stock. The outstanding 1,000,000 shares of Series A Preferred Stock are
convertible into 1,219,512 shares of Common Stock and, based on the Company's
current annual dividend rate of $1.88 per share of Common Stock, the Operating
Partnership's aggregate annual distribution to the Company for the dividends on
the Series A Preferred Stock is approximately
 
                                       S-6
<PAGE>   7
 
$2,292,683. The dividend rate for the Series B Preferred Stock is 9.45% of the
initial liquidation preference of $25.00 per share, or $2.3625 per annum. On an
aggregate basis, the Operating Partnership's annual distribution to the Company
for dividends on the Series B Preferred Stock is $10,040,625.
 
     Any dividend payment made on Series C Preferred Stock shall first be
credited against the earliest accrued but unpaid dividend due with respect to
Series C Preferred Stock which remains payable.
 
LIQUIDATION RIGHTS
 
     Upon any voluntary or involuntary liquidation, dissolution or winding up of
the affairs of the Company, then, before any distribution or payment shall be
made to the holders of any Common Stock or any other class or series of capital
stock of the Company ranking junior to the Series C Preferred Stock in the
distribution of assets upon any liquidation, dissolution or winding up of the
Company, the holders of Series C Preferred Stock shall be entitled to receive
out of assets of the Company legally available for distribution to stockholders,
liquidation distributions in the amount of the liquidation preference of $25.00
per share, plus an amount equal to all dividends accrued and unpaid thereon, if
any. After payment of the full amount of the liquidating distributions to which
they are entitled, the holders of Series C Preferred Stock will have no right or
claim to any of the remaining assets of the Company. In the event that, upon any
such voluntary or involuntary liquidation, dissolution or winding up, the
available assets of the Company are insufficient to pay the amount of the
liquidation distributions on all outstanding Series C Preferred Stock and the
corresponding amounts payable on all shares of other classes or series of
capital stock of the Company ranking on a parity with the Series C Preferred
Stock in the distribution of assets upon any liquidation, dissolution or winding
up of the affairs of the Company ("Parity Stock"), then the holders of the
Series C Preferred Stock and all other Parity Stock shall share ratably in any
such distribution of assets in proportion to the full liquidating distributions
to which they would otherwise be respectively entitled.
 
     For such purposes, the consolidation or merger of the Company with or into
any other entity, or the sale, lease or conveyance of all or substantially all
of the property or business of the Company, shall not be deemed to constitute a
liquidation, dissolution or winding up of the Company.
 
REDEMPTION
 
     Shares of the Series C Preferred Stock are not redeemable prior to October
10, 2002. On and after October 10, 2002, the Company at its option upon not less
than 30 nor more than 90 days' written notice may redeem the Series C Preferred
Stock, in whole or in part, at any time or from time to time, for cash at a
redemption price of $25.00 per share, plus an amount equal to all dividends
accrued and unpaid thereon to the date fixed for redemption, without interest.
The redemption price of the Series C Preferred Stock (other than the portion
thereof consisting of accrued and unpaid dividends) is payable solely out of
proceeds from the sale of other capital stock of the Company, which may include
Common Stock, Preferred Stock, depositary shares, interests, participations or
other ownership interests in the Company however designated (other than debt
securities converted into or exchangeable for capital stock), and any rights,
warrants or options to purchase any thereof. Holders of Series C Preferred Stock
to be redeemed shall surrender such Series C Preferred Stock at the place
designated in such notice and shall be entitled to the redemption price and any
accrued and unpaid dividends payable upon such redemption following such
surrender. If fewer than all of the outstanding Series C Preferred Stock are to
be redeemed, the number of shares to be redeemed will be determined by the
Company and such shares may be redeemed pro rata from the holders of record of
such shares in proportion to the number of such shares held by such holders
(with adjustments to avoid redemption of fractional shares) or by lot in a
manner determined by the Company.
 
     Unless full cumulative dividends on all Series C Preferred Stock and all
Parity Stock shall have been or contemporaneously are declared and paid or
declared and a sum sufficient for the payment thereof set apart for payment for
all past dividend periods and the then current dividend period, no Series C
 
                                       S-7
<PAGE>   8
 
Preferred Stock or Parity Stock shall be redeemed unless all outstanding Series
C Preferred Stock and Parity Stock are simultaneously redeemed; provided,
however, that the foregoing shall not prevent the purchase or acquisition of
Series C Preferred Stock pursuant to a purchase or exchange offer made on the
same terms to holders of all outstanding Series C Preferred Stock or Parity
Stock, as the case may be. Furthermore, unless full cumulative dividends on all
outstanding shares of Series C Preferred Stock and Parity Stock have been or
contemporaneously are declared and paid or declared and a sum sufficient for the
payment thereof set apart for payment for all past dividend periods and the then
current dividend period, the Company shall not purchase or otherwise acquire
directly or indirectly any Series C Preferred Stock or Parity Stock (except by
conversion into or exchange for shares of capital stock of the Company ranking
junior to the Series C Preferred Stock and Parity Stock as to dividends and
amounts upon liquidation).
 
     Notice of redemption will be mailed at least 30 days but not more than 90
days before the redemption date to each holder of record of Series C Preferred
Stock at the address shown on the stock transfer books of the Company. Each
notice shall state: (i) the redemption date; (ii) the number of shares of Series
C Preferred Stock to be redeemed; (iii) the redemption price; (iv) the place or
places where certificates for shares of Series C Preferred Stock are to be
surrendered for payment of the redemption price; and (v) that dividends on the
Series C Preferred Stock will cease to accrue on such redemption date. If fewer
than all shares of Series C Preferred Stock are to be redeemed, the notice
mailed to each such holder thereof shall also specify the number of shares of
Series C Preferred Stock to be redeemed from each such holder. If notice of
redemption of any Series C Preferred Stock has been given and if the funds
necessary for such redemption have been set aside by the Company in trust for
the benefit of the holders of shares of Series C Preferred Stock so called for
redemption, then from and after the redemption date, dividends will cease to
accrue on the shares of Series C Preferred Stock, such shares of Series C
Preferred Stock shall no longer be deemed outstanding and all rights of the
holders of such shares will terminate, except the right to receive the
redemption price.
 
     The holders of Series C Preferred Stock at the close of business on a
Dividend Record Date will be entitled to receive the dividends payable with
respect to such Series C Preferred Stock on the corresponding Dividend Payment
Date notwithstanding the redemption thereof between such Dividend Record Date
and the corresponding Dividend Payment Date or the Company's default in the
payment of the dividend due. Except as provided above, the Company will make no
payment or allowance for unpaid dividends, whether or not in arrears, on shares
of Series C Preferred Stock which have been called for redemption.
 
     The Series C Preferred Stock will not be subject to any sinking fund or
mandatory redemption. However, in order to preserve the Company's status as a
REIT as defined in the Code, the Series C Preferred Stock may be exchanged for
shares of Excess Stock, which may be subject to purchase by the Company as
described in the accompanying Prospectus under "Description of Capital Stock --
Restrictions on Transfer."
 
VOTING RIGHTS
 
     Except as indicated below, or except as otherwise from time to time
required by applicable law, the holders of Series C Preferred Stock will have no
voting rights.
 
     If six quarterly dividends (whether or not consecutive) payable on the
Series C Preferred Stock or any Parity Stock are in arrears, whether or not
earned or declared, the number of directors then constituting the Board of
Directors of the Company will be increased by two, and the holders of Series C
Preferred Stock, voting together as a class with the holders of any other series
of Parity Stock, including the outstanding Series A and Series B Preferred Stock
(the Series A and Series B Preferred Stock and any such other series of Parity
Stock, the "Voting Preferred Stock"), will have the right to elect two
additional directors to serve on the Company's Board of Directors at any annual
meeting of stockholders or a properly called special meeting of the holders of
Series C Preferred Stock and such other Voting Preferred Stock until all
dividends accumulated on such Series C Preferred Stock and Voting Preferred
Stock have been declared and paid or set aside for payment. The term of office
of all directors so elected will terminate with the termination of such voting
rights.
 
                                       S-8
<PAGE>   9
 
     The approval of two-thirds of the outstanding shares of Series C Preferred
Stock and all other series of Voting Preferred Stock similarly affected, voting
as a single class, is required in order to amend the Company's Articles
Supplementary or Charter to affect materially and adversely the rights,
preferences or voting power of the holders of the Series C Preferred Stock or
the Voting Preferred Stock. The approval of a majority of the outstanding shares
of Series C Preferred Stock and all other series of Voting Preferred Stock
similarly affected, voting as a single class, is required in order to (i) enter
into a share exchange that affects the Series C Preferred Stock or the Voting
Preferred Stock, or consolidate with or merge the Company with or into any other
corporation, unless in each such case each share of Series C Preferred Stock and
Voting Preferred Stock remains outstanding without a material adverse change to
its terms and rights or is converted into or exchanged for preferred stock of
the surviving entity having preferences, conversion and other rights, voting
powers, restrictions, limitations as to dividends, qualifications and terms or
conditions of redemption thereof identical to that of the Series C Preferred
Stock or the Voting Preferred Stock, as applicable, or (ii) authorize,
reclassify, create, or increase the authorized amount of any class of capital
stock having rights senior to the Series C Preferred Stock or the Voting
Preferred Stock with respect to the payment of dividends or amounts upon
liquidation, dissolution or winding up of the affairs of the Company. However,
the Company may create additional classes of Parity Stock and stock ranking
junior to the Series C Preferred Stock as to distributions or amounts upon
liquidation, dissolution or winding up of the affairs of the Company ("Junior
Stock"), increase the authorized number of Parity Stock and Junior Stock and
issue additional series of Parity Stock and Junior Stock without the consent of
any holder of Series C Preferred Stock.
 
     Except as provided above and as required by law, the holders of Series C
Preferred Stock are not entitled to vote on any merger or consolidation
involving the Company or a sale of all or substantially all of the assets of the
Company.
 
CONVERSION
 
     Shares of the Series C Preferred Stock are not convertible into or
exchangeable for any other property or securities of the Company at the option
of the holder. However, in order to preserve the Company's status as a REIT as
defined in the Code, the Series C Preferred Stock may be exchanged for Excess
Stock as described in "Description of Capital Stock -- Restrictions on Transfer"
in the accompanying Prospectus.
 
RESTRICTIONS ON OWNERSHIP
 
     For information regarding restrictions on ownership of the Series C
Preferred Stock, see "Description of Capital Stock -- Restrictions on Transfer"
in the accompanying Prospectus.
 
                                USE OF PROCEEDS
 
     The net proceeds of the Series C Preferred Stock offered hereby and in the
Concurrent Offering are expected to be $146.5 million. The Company intends to
contribute such proceeds to the Operating Partnership. These funds, together
with proceeds from the issuance of $300 million aggregate principal amount of
unsecured notes in July and September 1997, issuances and sales of Common Stock
and convertible preferred partnership units and unsecured borrowings under the
Company's line of credit facilities, will be used to fund the acquisition of
additional properties, including a portfolio of 44 properties (the "WCB
Portfolio"). In addition, the Company may enter into a new facility in
connection with the acquisition of the WCB Portfolio under which it would incur
unsecured borrowings to fund a portion of the purchase price for the WCB
Portfolio.
 
     Pending such application, the Operating Partnership will use a portion of
the net proceeds to repay borrowings on the Company's unsecured line of credit.
As of September 30, 1997, the weighted average interest rate on such short-term
indebtedness expected to be repaid with the net proceeds of the Offering was
6.5%.
 
                                       S-9
<PAGE>   10
 
                   CERTAIN FEDERAL INCOME TAX CONSIDERATIONS
 
     The following summary of certain federal income tax considerations is based
on current law, is for general information only, and is not tax advice. This
discussion does not purport to deal with all aspects of taxation that may be
relevant to particular shareholders in light of their personal investment or tax
circumstances, or to certain types of shareholders (including insurance
companies, tax-exempt organizations, financial institutions or broker dealers,
foreign corporations and persons who are not citizens or residents of the United
States) subject to special treatment under the federal income tax laws. In
addition, this section does not discuss foreign, state, or local taxation, and
this section only deals with shares of Series C Preferred Stock held as "capital
assets" within the meaning of Section 1221 of the Code.
 
     This Prospectus Supplement does not address the taxation of the Company or
the impact on the Company of its election to be taxed as a REIT. Such matters
are addressed in the accompanying Prospectus under "Federal Income Tax
Considerations -- Taxation of the Company." Prospective investors should
consult, and must depend on, their own tax advisors regarding the state, local,
foreign and other tax consequences of holding and disposing of Series C
Preferred Stock.
 
     Dividends and Other Distributions. For a discussion regarding the taxation
of dividends and other distributions, see "Federal Income Tax
Considerations -- Taxation of Stockholders" in the accompanying Prospectus.
 
     Backup Withholding. For a discussion of backup withholding, see "Federal
Income Tax Considerations -- Taxation of Stockholders -- Backup Withholding" in
the accompanying Prospectus.
 
     Sale or Exchange of Series C Preferred Stock. Upon the sale or exchange of
Series C Preferred Stock to a party other than the Company, a holder of Series C
Preferred Stock will realize a gain or loss measured by the difference between
the amount realized on the sale or other disposition and the holder's adjusted
tax basis in the Series C Preferred Stock. Any gain or loss realized will
generally be capital gain or loss. The recently enacted Taxpayer Relief Act of
1997 made certain changes to the Code with respect to taxation of capital gains
of noncorporate taxpayers. In general, the maximum tax rate for noncorporate
taxpayers on long-term capital gain has been lowered to 20% from the previous
28% rate with respect to capital assets (including the Series C Preferred
Stock), but only if they have been held for more than 18 months at the time of
disposition. Capital gain on assets sold on or after July 29, 1997, having a
holding period of more than one year but not more than 18 months will be taxed
as "mid-term gain" at a maximum 28% rate.
 
     Redemption of Series C Preferred Stock. The treatment to be accorded to any
redemption by the Company of Series C Preferred Stock can only be determined on
the basis of particular facts as to each holder of Series C Preferred Stock at
the time of redemption. In general, a holder of Series C Preferred Stock will
recognize capital gain or loss measured by the difference between the amount
realized by the holder upon the redemption and such holder's adjusted tax basis
in the Series C Preferred Stock redeemed (provided the shares of Series C
Preferred Stock are held as a capital asset) if such redemption (i) results in a
"complete termination" of the holder's interest in all classes of shares of the
Company under Section 302(b)(3) of the Code (ii) is "substantially
disproportionate" with respect to the holder's interest in the Company under
Section 302(b)(2) of the Code (which will not be the case if only Series C
Preferred Stock are redeemed, since they generally do not have voting rights) or
(iii) is "not essentially equivalent to a dividend" with respect to the holder
of Series C Preferred Stock under Section 302(b)(1) of the Code. In determining
whether any of these tests have been met, shares considered to be owned by the
holder by reason of certain constructive ownership rules set forth in the Code,
as well as shares actually owned, must generally be taken into account. Because
the determination as to whether any of the alternative tests of Section 302(b)
of the Code will be satisfied with respect to any particular holder of Series C
Preferred Stock depends upon the facts and circumstances at the time when the
determination must be made, prospective investors are advised to consult their
own tax advisors to determine such tax treatment.
 
                                      S-10
<PAGE>   11
 
                                  UNDERWRITING
 
     Subject to the terms and conditions of the Underwriting Agreement and the
related Pricing Agreement, the Company has agreed to sell to each of the
Underwriters named below, and each of the Underwriters, for whom Goldman, Sachs
& Co., Donaldson, Lufkin & Jenrette Securities Corporation, Merrill Lynch,
Pierce Fenner & Smith Incorporated, Morgan Stanley & Co. Incorporated and
Prudential Securities Incorporated are acting as representatives, has severally
agreed to purchase from the Company, the respective number of shares of Series C
Preferred Stock set forth opposite its name below:
 
<TABLE>
<CAPTION>
                                                                     SHARES OF SERIES C
                               UNDERWRITERS                           PREFERRED STOCK
        -----------------------------------------------------------  ------------------
        <S>                                                          <C>
        Goldman, Sachs & Co........................................         630,000
        Donaldson, Lufkin & Jenrette Securities Corporation........         630,000
        Merrill Lynch, Pierce, Fenner & Smith Incorporated.........         630,000
        Morgan Stanley & Co. Incorporated..........................         630,000
        Prudential Securities Incorporated.........................         630,000
        Bear, Stearns & Co. Inc....................................          75,000
        SBC Warburg Dillon Read Inc................................          75,000
        A.G. Edwards & Sons, Inc...................................          75,000
        Legg Mason Wood Walker, Incorporated.......................          75,000
        Oppenheimer & Co., Inc.....................................          75,000
        Advest, Inc................................................          35,000
        Robert W. Baird & Co. Incorporated.........................          35,000
        J.C. Bradford & Co.........................................          35,000
        Cowen & Company............................................          35,000
        Crowell, Weedon & Co.......................................          35,000
        Dain Bosworth Incorporated.................................          35,000
        Fahnestock & Co. Inc.......................................          35,000
        Interstate/Johnson Lane Corporation........................          35,000
        Janney Montgomery Scott Inc................................          35,000
        McDonald & Company Securities, Inc.........................          35,000
        McGinn, Smith & Co., Inc...................................          35,000
        Morgan Keegan & Company, Inc...............................          35,000
        Piper Jaffray Inc..........................................          35,000
        Principal Financial Securities, Inc........................          35,000
        Ragen MacKenzie Incorporated...............................          35,000
        Rauscher Pierce Refanes, Inc...............................          35,000
        Raymond James & Associates, Inc............................          35,000
        The Robinson-Humphrey Company, LLC.........................          35,000
        Roney & Co., LLC...........................................          35,000
        Sutro & Co. Incorporated...................................          35,000
        Trilon International Inc...................................          35,000
        Tucker Anthony Incorporated................................          35,000
        U.S. Clearing Corp.........................................          35,000
        Wedbush Morgan Securities..................................          35,000
        Wheat First Securities, Inc................................          35,000
                                                                          ---------
                  Total............................................       4,400,000
                                                                          =========
</TABLE>
 
     Under the terms and conditions of the Underwriting Agreement and the
related Pricing Agreement, the Underwriters are committed to take all of the
shares of Series C Preferred Stock, if any are taken.
 
                                      S-11
<PAGE>   12
 
     The Underwriters propose to offer the Series C Preferred Stock in part
directly to the public at the initial public offering price set forth on the
cover page of this Prospectus Supplement and in part to certain securities
dealers at such price less a concession of $.50 per share. The Underwriters may
allow, and such dealers may reallow, a concession not in excess of $.40 per
share to certain brokers and dealers. After the shares of Series C Preferred
Stock are released for sale to the public, the offering price and other selling
terms may from time to time be varied by the representatives.
 
     The Company has agreed that during the period beginning from the date of
this Prospectus Supplement and continuing to and including the date 90 days
after the date of this Prospectus Supplement, not to sell, contract to sell or
otherwise dispose of any shares of Series C Preferred Stock or any securities of
the Company that are substantially similar to the shares of Series C Preferred
Stock, or any other security convertible into or exchangeable for, or represent
the right to receive, shares of Series C Preferred Stock or any such similar
securities without the prior written consent of the Underwriters.
 
     Certain of the Underwriters have provided various investment banking
services to the Company and its affiliates from time to time, for which they
have received customary compensation.
 
     The Company and the Operating Partnership have agreed to indemnify the
several Underwriters against certain liabilities, including liabilities under
the Securities Act of 1933, as amended.
 
     In connection with the Offering, the Underwriters may purchase and sell the
shares of Series C Preferred Stock in the open market. These transactions may
include over-allotment and stabilizing transactions and purchases to cover
syndicate short positions created in connection with the Offering. Stabilizing
transactions consist of certain bids or purchases for the purpose of preventing
or retarding a decline in the market price of the shares; and syndicate short
positions involve the sale by the Underwriters of a greater number of shares
than they are required to purchase from the Company in the Offering. The
Underwriters also may impose a penalty bid, whereby selling concessions allowed
to syndicate members or other broker-dealers in respect of the shares of Series
C Preferred Stock sold in the Offering for their account may be reclaimed by the
syndicate if such shares are repurchased by the syndicate in stabilizing or
covering transactions. These activities may stabilize, maintain or otherwise
affect the market price of the shares, which may be higher than the price that
might otherwise prevail in the open market; and these activities, if commenced,
may be discontinued at any time. These transactions may be effected on the New
York Stock Exchange, in the over-the-counter market or otherwise.
 
     The Company is acquiring the WCB Portfolio from an affiliate of Goldman,
Sachs & Co. To the extent the proceeds from the Offering are used to consummate
such acquisition, the affiliate of Goldman, Sachs & Co. will receive its share
of such proceeds.
 
                      VALIDITY OF SERIES C PREFERRED STOCK
 
     The validity of the shares of Series C Preferred Stock offered hereby will
be passed upon for the Company by Sullivan & Cromwell, Los Angeles, California,
and for the Underwriters by Willkie Farr & Gallagher, New York, New York.
Sullivan & Cromwell and Willkie Farr & Gallagher will rely upon the opinion of
Piper & Marbury L.L.P., Baltimore, Maryland as to certain matters of Maryland
law.
 
                                      S-12
<PAGE>   13
 
                                 $1,815,000,000
 
                            SPIEKER PROPERTIES, INC.
                         COMMON STOCK, PREFERRED STOCK,
 
                               DEPOSITARY SHARES,
[SPIEKER LOGO]              WARRANTS AND GUARANTEES
 
                            SPIEKER PROPERTIES, L.P.
                                DEBT SECURITIES
                            ------------------------
 
     Spieker Properties, Inc. (the "Company") may from time to time offer in one
or more series or classes (i) shares of its common stock, par value $0.0001 per
share (the "Common Stock"), (ii) shares or fractional shares of its preferred
stock, par value $0.0001 per share (the "Preferred Stock"), (iii) shares of
Preferred Stock represented by Depositary Shares (the "Depositary Shares"), (iv)
warrants to purchase Preferred Stock or Common Stock (the "Warrants"), and (v)
unconditional guarantees (the "Guarantees") of unsecured Debt Securities (as
defined below) issued by Spieker Properties, L.P. (the "Operating Partnership")
in amounts, at prices and on terms to be determined at the time of offering,
with an aggregate public offering price of up to $1,000,000,000 (or its
equivalent in another currency based on the exchange rate at the time of sale)
in amounts, at prices and on terms to be determined at the time of offering. The
Operating Partnership may from time to time offer in one or more series
unsecured non-convertible investment grade debt securities, which may be either
senior debt securities ("Senior Securities") or subordinated debt securities
("Subordinated Securities," and together with the Senior Securities, the "Debt
Securities"), with an aggregate public offering price of up to $815,000,000 (or
its equivalent in another currency based on the exchange rate at the time of
sale) in amounts, at prices and on terms to be determined at the time of
offering. The Debt Securities may be guaranteed by Guarantees of the Company as
to payment of principal, premium, if any, and interest. The Common Stock,
Preferred Stock, Depositary Shares, Warrants and Debt Securities (collectively,
the "Offered Securities") may be offered, separately or together, in separate
series in amounts, at prices and on terms to be set forth in one or more
supplements to the Prospectus (a "Prospectus Supplement").
 
     The specific terms of the Offered Securities in respect to which this
Prospectus is being delivered will be set forth in the applicable Prospectus
Supplement and will include, where applicable (i) in the case of Common Stock,
the specific title and stated value and any initial public offering price; (ii)
in the case of Preferred Stock, the specific title and stated value, any
dividend, liquidation, redemption, conversion, voting and other rights, and any
initial public offering price; (iii) in the case of Depositary Shares, the
fractional share of Preferred Stock represented by each such Depositary Share;
(iv) in the case of Warrants, the duration, offering price, exercise price and
detachability; and (v) in the case of Debt Securities the specific title,
aggregate principal amount, currency, form (which may be registered or bearer,
or certificated or global), authorized denominations, maturity, rate (or manner
of calculation thereof) and time of payment of interest, terms for redemption at
the option of the Operating Partnership or repayment at the option of the
holder, terms for sinking fund payments, covenants, applicability of any
Guarantees and any initial public offering price. In addition, such specific
terms may include limitations on direct or beneficial ownership and restrictions
on transfer of the Offered Securities, in each case as may be appropriate to
preserve the status of the Company as a real estate investment trust ("REIT")
for federal income tax purposes.
 
     The applicable Prospectus Supplement will also contain information, where
applicable, about certain United States federal income tax considerations
relating to, and any listing on a securities exchange of, the Offered Securities
covered by such Prospectus Supplement.
 
     The Offered Securities may be offered directly, through agents designated
from time to time by the Company or the Operating Partnership, or to or through
underwriters or dealers. If any agents or underwriters are involved in the sale
of any of the Offered Securities, their names, and any applicable purchase
price, fee, commission or discount arrangement between or among them, will be
set forth, or will be calculable from the information set forth, in the
applicable Prospectus Supplement. See "Plan of Distribution." No Offered
Securities may be sold without delivery of the applicable Prospectus Supplement
describing the method and terms of the offering of such series of Offered
Securities.
                            ------------------------
 
  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
   AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.
 
                            ------------------------
 
                THE DATE OF THIS PROSPECTUS IS OCTOBER 1, 1997.
<PAGE>   14
 
                             AVAILABLE INFORMATION
 
     The Company and the Operating Partnership are subject to the informational
requirements of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), and in accordance therewith the Company and the Operating Partnership
file reports, proxy statements and other information with the Securities and
Exchange Commission (the "Commission"). Such reports, proxy statements and other
information filed can be inspected and copied at the Commission's Public
Reference Section, 450 Fifth Street, N.W., Washington, D.C., 20549, and at the
following regional offices of the Commission: Seven World Trade Center, 13th
Floor, New York, New York 10048 and 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661-2511. Copies of such material can be obtained from the
Public Reference Section of the Commission, 450 Fifth Street, N.W., Washington,
D.C. 20549, at prescribed rates. The Commission also maintains a World Wide Web
site that contains reports, proxy and information statements and other
information regarding registrants, such as the Company and the Operating
Partnership, that file electronically with the Commission. The address of the
Commission's site is http://www.sec.gov. In addition, the Company's Common Stock
and Series B Preferred Stock are listed on the New York Stock Exchange and
similar information concerning the Company can be inspected and copied at the
offices of the New York Stock Exchange, Inc., 20 Broad Street, New York, New
York 10005.
 
     The Company and the Operating Partnership have filed with the Commission
registration statements on Form S-3 (the "Registration Statements") (of which
this Prospectus is a part) under the Securities Act of 1933, as amended (the
"Securities Act"), with respect to the Offered Securities. This Prospectus does
not contain all of the information set forth in the Registration Statements,
certain portions of which have been omitted as permitted by the rules and
regulations of the Commission. Statements contained in this Prospectus as to the
contents of any contract or other documents are not necessarily complete, and in
each instance reference is made to the copy of such contract or other document
filed as an exhibit to the Registration Statements, each such statement being
qualified in all respects by such reference and the exhibits and schedules
thereto. For further information regarding the Company, the Operating
Partnership and the Offered Securities, reference is hereby made to the
Registration Statements and such exhibits and schedules which may be obtained
from the Commission at its principal office in Washington, D.C. upon payment of
the fees prescribed by the Commission.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The documents listed below have been filed by the Company under the
Exchange Act with the Commission and are incorporated herein by reference:
 
          a. The Company's Annual Report on Form 10-K for the year ended
     December 31, 1996;
 
          b. The Company's Quarterly Reports on Forms 10-Q for the quarters
     ended March 31, 1997 and June 30, 1997;
 
          c. The Company's Current Reports on Form 8-K dated February 3, 1997,
     June 27, 1997 and September 22, 1997;
 
          d. The description of the Company's Common Stock contained in the
     Company's Registration Statement on Form 8-A (File No. 1-12528); and
 
          e. The description of the Company's Series B Preferred Stock contained
     in the Company's Registration Statement on Form 8-A (File No. 1-12528).
 
     The documents listed below have been filed by the Operating Partnership
under the Exchange Act with the Commission and are incorporated by reference
herein.
 
          a. The Operating Partnership's Annual Report on Form 10-K for the year
     ended December 31, 1996;
 
          b. The Operating Partnership's Quarterly Reports on Forms 10-Q for the
     quarters ended March 31, 1997 and June 30, 1997; and
 
                                        2
<PAGE>   15
 
          c. The Operating Partnership's Current Report on Form 8-K dated
     February 3, 1997, June 27, 1997 and September 22, 1997.
 
     Each document filed by the Company or the Operating Partnership pursuant to
Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act subsequent to the date
of this Prospectus and prior to the termination of the offering of all Offered
Securities to which this Prospectus relates shall be deemed to be incorporated
by reference in this Prospectus and to be part hereof from the date of filing
such documents.
 
     Any statement contained herein or in a document incorporated or deemed to
be incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Prospectus to the extent that a statement contained herein
(or in the applicable Prospectus Supplement) or in any other subsequently filed
document which also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement. Any such statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Prospectus.
 
     Copies of all documents which are incorporated herein by reference (not
including the exhibits to such information, unless such exhibits are
specifically incorporated by reference in such information) will be provided
without charge to each person, including any beneficial owner, to whom this
Prospectus is delivered upon written or oral request. Requests should be
directed to the Investor Relations Coordinator, Spieker Properties, Inc., 2180
Sand Hill Road, Menlo Park, California 94025, telephone number: (650) 854-5600.
 
                                        3
<PAGE>   16
 
                   THE COMPANY AND THE OPERATING PARTNERSHIP
 
     Spieker Properties, Inc. (the "Company") is a self-administered and
self-managed equity real estate investment trust ("REIT") that was formed in
1993 to continue and to expand the business of owning, operating, managing,
leasing, acquiring, developing and redeveloping commercial property previously
conducted by Spieker Partners. As of June 30, 1997, the Company owned and
operated 180 income-producing properties (the "Properties"), aggregating
approximately 24.8 million rentable square feet. All of the Properties are
located in California, and in Washington, Oregon and Idaho (the "Pacific
Northwest").
 
     The Company conducts substantially all of its activities through Spieker
Properties, L.P. (the "Operating Partnership") in which it owns an approximate
87.0% general partnership interest, as of June 30, 1997. An approximate 13.0%
limited partnership interest in the Operating Partnership is owned by senior
members of the Company's management and certain outside investors, as of June
30, 1997. As the sole general partner of the Operating Partnership, the Company
has control over the management of the Operating Partnership and over each of
the Properties.
 
     The Company's Common Stock is listed on the New York Stock Exchange under
the Symbol "SPK." The Company is a Maryland corporation and the Operating
Partnership is a California limited partnership. The Operating Partnership was
formed in 1993 in connection with the formation of the Company. The Company's
and the Operating Partnership's executive offices are located at 2180 Sand Hill
Road, Menlo Park, California 94025 and telephone number is (415) 854-5600.
 
                                USE OF PROCEEDS
 
     The Company intends to invest the net proceeds of any sale of Common Stock,
Preferred Stock, Depositary Shares or Warrants in the Operating Partnership.
Unless otherwise indicated in the applicable Prospectus Supplement, the
Operating Partnership intends to use such net proceeds and the net proceeds from
the sale of any Debt Securities for general corporate purposes including,
without limitation, the acquisition and development of industrial and office
properties and the repayment of debt. Net proceeds from the sale of the Offered
Securities initially may be temporarily invested in short-term securities.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
     The Company's and the Operating Partnership's ratio of earnings to fixed
charges for the six months ended June 30, 1997 was 2.76x and for the years ended
December 31, 1994, 1995 and 1996 was 1.29x, 1.61x and 2.56x, respectively. The
Company's ratio of earnings to combined fixed charges and preferred stock
dividends for the six months ended June 30, 1997 was 2.26x and for the years
ended December 31, 1994, 1995 and 1996 was 1.26x, 1.53x and 1.97x, respectively.
 
     For purposes of computing these ratios, earnings have been calculated by
adding fixed charges (excluding capitalized interest) to income (loss) from
operations, before extraordinary items. Fixed charges consist of interest costs,
whether expensed or capitalized, the interest component of rental expense, and
amortization of debt discounts and deferred financing fees, whether expensed or
capitalized.
 
                                        4
<PAGE>   17
 
     Prior to the completion of the Company's initial public offering ("IPO") in
November 1993, the Company's predecessors (collectively, "SPP") operated in a
manner as to minimize net taxable income to the owners. As a result, although
the Company's properties historically have generally positive net cash flow, SPP
had net losses for the years ended December 31, 1992 and 1993. Consequently, the
computation of the ratio of earnings to fixed charges indicates that earnings
were inadequate to cover fixed charges by approximately $9.4 million and $13.5
million for 1992 and 1993 (which includes the Company's results of operations
for the period of November 19, 1993 through December 31, 1993, during which the
Company had no outstanding preferred stock), respectively.
 
     The Company's IPO and the other transactions undertaken concurrently with
the IPO permitted the Company to significantly deleverage properties, resulting
in a significantly improved ratio of earnings to fixed charges.
 
                                        5
<PAGE>   18
 
                             SPECIAL CONSIDERATIONS
 
     Prospective investors should carefully consider the following information
in conjunction with the other information contained in this Prospectus and the
applicable Prospectus Supplement before purchasing Offered Securities.
 
GENERAL REAL ESTATE INVESTMENT RISKS
 
     Real property investments are subject to varying degrees of risk. The
yields available from investments in real estate depend on the amount of income
and capital appreciation generated by the related properties. If the Properties
do not generate sufficient income to meet operating expenses, including debt
service, ground lease payments, tenant improvements, third-party leasing
commissions and other capital expenditures, the Company's income and ability to
make distributions to its stockholders and the Operating Partnership's ability
to make payments of any interest and principal on any Debt Securities will be
adversely affected. The performance of the economy in each of the regions in
which the Properties are located affects occupancy, market rental rates and
expenses and, consequently, has an impact on the income from the Properties and
their underlying values. The financial results of major local employers also may
have an impact on the cash flow and value of certain Properties. In terms of
rentable square feet, over 45% of the Properties as of June 30, 1997, were
located in the San Francisco Bay Area. As a result of this geographic
concentration, the performance of the San Francisco Bay Area commercial real
estate market will affect the value of the Properties in that area and, in turn,
the value of the Company.
 
     Income from the Properties may be further adversely affected by the general
economic climate, local economic conditions in which the Properties are located,
such as oversupply of space or a reduction in demand for rental space, the
attractiveness of the Properties to tenants, competition from other available
space, the ability of the Company to provide for adequate maintenance and
insurance and increased operating expenses. There is also the risk that as
leases on the Properties expire, tenants will enter into new leases on terms
that are less favorable to the Company. Income and real estate values may also
be adversely affected by such factors as applicable laws (e.g., ADA and tax
laws), interest rate levels and the availability of financing. In addition, real
estate investments are relatively illiquid and, therefore, will tend to limit
the ability of the Company to vary its portfolio promptly in response to changes
in economic or other conditions.
 
COMPETITION
 
     Numerous industrial, office and retail properties compete with the
Properties in attracting tenants to lease space. Some of these competing
properties are newer, better located or better capitalized than the Company's
Properties. The number of competitive commercial properties in a particular area
could have a material effect on the Company's ability to lease space in the
Properties or at newly developed or acquired properties and on the rents
charged.
 
ACQUISITION AND DEVELOPMENT ACTIVITIES
 
     The Company intends to acquire existing commercial properties to the extent
that they can be acquired on advantageous terms and meet the Company's
investment criteria. Acquisitions of commercial properties entail general
investment risks associated with any real estate investment, including the risk
that investments will fail to perform as expected or that estimates of the cost
of improvements to bring an acquired property up to standards established for
the intended market position may prove inaccurate.
 
     The Company intends to pursue commercial property development projects and
to develop certain landholdings as to which it has certain options. Such
projects generally require various governmental and other approvals, the receipt
of which cannot be assured. The Company's development activities will entail
certain risks, including the expenditure of funds on and devotion of
management's time to projects which may not come to fruition; the risk that
construction costs of a project may exceed original estimates,
 
                                        6
<PAGE>   19
 
possibly making the project uneconomic; the risk that occupancy rates and rents
at a completed project will be less than anticipated; and the risk that expenses
at a completed development will be higher than anticipated. These risks may
result in a reduction in the funds available for distribution.
 
DEBT FINANCING
 
     The Company will be subject to the risks normally associated with debt
financing, including the risk that the Company's cash flow will be insufficient
to meet required payments of principal and interest, the risk that existing
indebtedness on the Properties cannot be refinanced or that the terms of such
refinancing will not be as favorable as the terms of existing indebtedness.
 
ENVIRONMENTAL MATTERS
 
     Under various Federal, state and local laws, ordinances and regulations, an
owner or operator of real estate is liable for the costs of removal or
remediation of certain hazardous or toxic substances on or in such property.
Such laws often impose such liability without regard to whether the owner or
operator knew of, or was responsible for, the presence of such hazardous or
toxic substances. The presence of such substances, or the failure to properly
remediate such substances, may adversely affect the owner's or operator's
ability to sell or rent such property or to borrow using such property as
collateral. Persons who arrange for the disposal or treatment of hazardous or
toxic substances may also be liable for the costs of removal or remediation of
such substances at a disposal or treatment facility, whether or not such
facility is owned or operated by such person. Certain environmental laws impose
liability for release of asbestos-containing materials into the air, and third
parties may seek recovery from owners or operators of real properties for
personal injuries associated with asbestos-containing materials. In connection
with the ownership (direct or indirect), operation, management and development
of real properties, the Company may be considered an owner or operator of such
properties or as having arranged for the disposal or treatment of hazardous or
toxic substances and, therefore, may be potentially liable for removal or
remediation costs, as well as certain other costs, including governmental fines
and injuries to persons and property.
 
     The Company is not aware of any environmental liability with respect to the
Properties that would have a material adverse effect on the Company's business,
assets or results of operations. There can be no assurance that such a material
environmental liability does not exist. The existence of any such material
environmental liability would have an adverse effect on the Company's results of
operations and cash flow.
 
GENERAL UNINSURED LOSSES/SEISMIC ACTIVITY
 
     The Company carries comprehensive liability, fire, flood, extended coverage
and rental loss insurance with policy specifications, limits and deductibles
customarily carried for similar properties. There are, however, certain types of
extraordinary losses which may be either uninsurable, or not economically
insurable. Further, a substantial number of the Properties are located in areas
that are subject to earthquake activity. Although the Company has obtained
certain limited earthquake insurance policies, should a Property sustain damage
as a result of an earthquake, the Company may incur substantial losses due to
insurance deductibles, co-payments on insured losses or uninsured losses.
Additionally, earthquake insurance may not be available for certain of the
Company's Properties, or if available, may not be available on terms acceptable
to the Company. Should an uninsured loss occur, the Company could lose its
investment in, and anticipated profits and cash flows from, a number of
Properties.
 
                                        7
<PAGE>   20
 
                         DESCRIPTION OF DEBT SECURITIES
 
     The following sets forth certain general terms and provisions of the
Indenture under which the Debt Securities are to be issued. The particular terms
of the Debt Securities will be set forth in a Prospectus Supplement relating to
such Debt Securities.
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
Debt Securities are to be issued under an Indenture dated December 6, 1995, as
amended or supplemented from time to time (the "Indenture"), among the Operating
Partnership, the Company and State Street Bank and Trust Company, as trustee
(together with any other trustee(s) appointed in a supplemental indenture with
respect to a particular series, the "Trustee"). The Indenture is available for
inspection at the corporate trust office of the Trustee, or as described above
under "Available Information." The Indenture is subject to, and governed by, the
Trust Indenture Act of 1939, as amended. The statements made hereunder relating
to the Indenture and the Debt Securities to be issued hereunder are summaries of
certain provisions thereof and do not purport to be complete and are subject to,
and are qualified in their entirety by reference to, all provisions of the
Indenture and such Debt Securities. All section references appearing herein are
to sections of the Indenture, and capitalized terms used but not defined herein
shall have the respective meanings set forth in the Indenture.
 
GENERAL
 
     The Debt Securities will be direct, unsecured obligations of the Operating
Partnership. Except for any series of Debt Securities which is specifically
subordinated to other indebtedness of the Operating Partnership, the Debt
Securities will rank pari passu with all other unsecured and unsubordinated
indebtedness of the Operating Partnership. Under the Indenture, the Debt
Securities may be issued without limit as to aggregate principal amount, in one
or more series, in each case as established from time to time in or pursuant to
authority granted by a resolution of the Board of Directors of the Company as
sole general partner of the Operating Partnership or as established in one or
more indentures supplemental to the Indenture. All Debt Securities of one series
need not be issued at the same time and, unless otherwise provided, a series may
be reopened, without the consent of the Holders of the Debt Securities of such
series, for issuances of additional Debt Securities of such series (Section
301).
 
     The Debt Securities may be unconditionally guaranteed by the Company as to
payment of principal, premium, if any, and interest. (Section 1601).
 
     The Indenture provides that there may be more than one Trustee thereunder,
each with respect to one or more series of Debt Securities. Any Trustee under
the Indenture may resign or be removed with respect to one or more series of
Debt Securities, and a successor Trustee will be appointed to act with respect
to such series (Section 608). In the event that two or more persons are acting
as Trustee with respect to different series of Debt Securities, each such
Trustee shall be a trustee of a trust under the Indenture separate and apart
from the trust administered by any other Trustee (Section 609), and, except as
otherwise indicated herein, any action described herein to be taken by the
Trustee may be taken by each such Trustee with respect to, and only with respect
to, the one or more series of Debt Securities for which it is Trustee under the
Indenture.
 
TERMS
 
     Reference is made to the Prospectus Supplement relating to the series of
Debt Securities being offered for the specific terms thereof, including:
 
          (1) the title of such Debt Securities, whether such Debt Securities
     are Senior Securities or Subordinated Securities and whether such Debt
     Securities are guaranteed by a Guarantee;
 
          (2) the aggregate principal amount of such Debt Securities and any
     limit on such aggregate principal amount;
 
                                        8
<PAGE>   21
 
          (3) the percentage of the principal amount at which such Debt
     Securities will be issued and, if other than the principal amount thereof,
     the portion of the principal amount thereof payable upon declaration of
     acceleration of the maturity thereof;
 
          (4) the date or dates, or the method for determining such date or
     dates, on which the principal of such Debt Securities will be payable;
 
          (5) the rate or rates (which may be fixed or variable), or the method
     by which such rate or rates shall be determined, at which such Debt
     Securities will bear interest, if any;
 
          (6) the date or dates, or the method for determining such date or
     dates, from which any such interest will accrue, the Interest Payment Dates
     on which any such interest will be payable, the Regular Record Dates for
     such Interest Payment Dates, or the method by which such Dates shall be
     determined, the Person to whom such interest shall be payable, and the
     basis upon which interest shall be calculated if other than that of a
     360-day year of twelve 30-day months;
 
          (7) the place or places where (i) the principal of (and premium, if
     any) and interest, if any, on such Debt Securities will be payable, (ii)
     such Debt Securities may be surrendered for registration of transfer,
     exchange or conversion and (iii) notices or demands to or upon the
     Operating Partnership in respect of such Debt Securities, any applicable
     Guarantees and the Indenture may be served;
 
          (8) the period or periods within which, or the date or dates on which,
     the price or prices at which and the terms and conditions upon which such
     Debt Securities may be redeemed, as a whole or in part, at the option of
     the Operating Partnership, if the Operating Partnership is to have such an
     option;
 
          (9) the obligation, if any, of the Operating Partnership to redeem,
     repay or repurchase such Debt Securities pursuant to any sinking fund or
     analogous provisions or at the option of a Holder thereof, and the period
     or periods within which, or the date or dates on which, the price or prices
     at which and the terms and conditions upon which such Debt Securities are
     required to be redeemed, repaid or purchased, as a whole or in part,
     pursuant to such obligation;
 
          (10) if other than U.S. dollars, the currency or currencies in which
     such Debt Securities are denominated and/or payable, which may be a foreign
     currency or units of two or more foreign currencies or a composite currency
     or currencies, and the terms and conditions relating thereto;
 
          (11) whether the amount of payments of principal of (and premium, if
     any) or interest, if any, on such Debt Securities may be determined with
     reference to an index, formula or other method (which index, formula or
     method may, but need not be, based on a currency, currencies, currency unit
     or units or composite currency or currencies) and the manner in which such
     amounts shall be determined;
 
          (12) any additions to, modifications of or deletions from the terms of
     such Debt Securities with respect to the Events of Default or covenants or
     other provisions set forth in the Indenture;
 
          (13) whether such Debt Securities will be issued in certificated
     and/or book-entry form;
 
          (14) whether such Debt Securities will be in registered or bearer form
     and, if in registered form, the denominations thereof if other than $1,000
     and any integral multiple thereof and, if in bearer form, the denominations
     thereof and terms and conditions relating thereto;
 
          (15) the applicability, if any, of the defeasance and covenant
     defeasance provisions of Article XIV of the Indenture, or any modification
     thereof;
 
          (16) the terms and conditions, if any, upon which such Debt Securities
     may be subordinated to other indebtedness of the Operating Partnership;
 
          (17) whether and under what circumstances the Operating Partnership
     will pay Additional Amounts as contemplated in the Indenture on such Debt
     Securities in respect of any tax,
 
                                        9
<PAGE>   22
 
     assessment or governmental charge and, if so, whether the Operating
     Partnership will have the option to redeem such Debt Securities in lieu of
     making such payment; and
 
          (18) any other terms of such Debt Securities not inconsistent with the
     provisions of the Indenture (Section 301).
 
     The Debt Securities may provide for less than the entire principal amount
thereof to be payable upon declaration of acceleration of the maturity thereof
("Original Issue Discount Securities"). Special U.S. federal income tax,
accounting and other considerations applicable to the Original Issue Discount
Securities will be described in the applicable Prospectus Supplement.
 
     The Indenture does not contain any provisions that would limit the ability
of the Operating Partnership to incur indebtedness or that would afford Holders
of Debt Securities protection in the event of a highly leveraged or similar
transaction involving the Operating Partnership. However, restrictions on
ownership and transfers of the Company's common stock and preferred stock,
designed to preserve the Company's status as a REIT, may prevent or hinder a
change of control. Reference is made to the applicable Prospectus Supplement for
information with respect to any deletions from, modifications of or additions to
the Events of Default or covenants of the Operating Partnership that are
described below, including any addition of a covenant or other provision
providing event risk or similar protection.
 
GUARANTEES
 
     The Debt Securities may be unconditionally and irrevocably guaranteed by
Guarantees of the Company, on a senior or subordinated basis, which will
guarantee the due and punctual payment of principal of, premium, if any, and
interest on such Debt Securities, and the due and punctual payment of any
sinking fund payments thereon, when and as the same shall become due and payable
whether at a maturity date, by declaration of acceleration, call for redemption
or otherwise. The applicability and terms of any such Guarantee relating to a
series of Debt Securities will be set forth in the Prospectus Supplement
relating to such Debt Securities. (Section 1601).
 
DENOMINATIONS, INTEREST, REGISTRATION AND TRANSFER
 
     Unless otherwise described in the applicable Prospectus Supplement, the
Debt Securities of any series will be issuable in denominations of $1,000 and
integral multiples thereof (Section 302).
 
     Unless otherwise specified in the applicable Prospectus Supplement, the
principal of (and premium, if any) and interest on any series of Debt Securities
will be payable at the corporate trust office of the Trustee, provided that, at
the option of the Holder, payment of interest may be made by check mailed to the
address of the Person entitled thereto as it appears in the Security Register or
by wire transfer of funds to such Person at an account maintained within the
United States (Sections 301, 305, 307 and 1002).
 
     All amounts paid by the Operating Partnership to a paying agent or a
Trustee for the payment of the principal of or any premium or interest on any
Debt Security which remain unclaimed at the end of two years after the
principal, premium or interest has become due and payable will be repaid to the
Operating Partnership, and the holder of the Debt Security thereafter may look
only to the Operating Partnership for payment thereof. (Section 1003).
 
     Any interest not punctually paid or duly provided for on any Interest
Payment Date with respect to a Debt Security ("Defaulted Interest") will
forthwith cease to be payable to the Holder on the applicable Regular Record
Date and may either be paid to the person in whose name such Debt Security is
registered at the close of business on a special record date (the "Special
Record Date") for the payment of such Defaulted Interest to be fixed by the
Trustee, notice whereof shall be given to the Holder of such Debt Security not
less than 10 days prior to such Special Record Date, or may be paid at any time
in any other lawful manner, all as more completely described in the Indenture
(Sections 101 and 307).
 
                                       10
<PAGE>   23
 
     Subject to certain limitations imposed upon Debt Securities issued in
book-entry form, the Debt Securities of any series will be exchangeable for
other Debt Securities of the same series, of a like aggregate principal amount
and tenor, of different authorized denominations upon surrender of such Debt
Securities at the corporate trust office of the Trustee. In addition, subject to
certain limitations imposed upon Debt Securities issued in book-entry form, the
Debt Securities of any series may be surrendered for conversion or registration
of transfer thereof at the corporate trust office of the Trustee referred to
above. Every Debt Security surrendered for conversion, redemption, registration
of transfer or exchange shall be duly endorsed or accompanied by a written
instrument of transfer. No service charge will be made for any registration of
transfer or exchange of any Debt Securities, but the Operating Partnership may
require payment of a sum sufficient to cover any tax or other governmental
charge payable in connection therewith (Section 305). If the applicable
Prospectus Supplement refers to any transfer agent (in addition to the Trustee)
initially designated by the Operating Partnership with respect to any series of
Debt Securities, the Operating Partnership may at any time rescind the
designation of any such transfer agent or approve a change in the location
through which any such transfer agent acts, except that the Operating
Partnership will be required to maintain a transfer agent in each Place of
Payment for such series. The Operating Partnership may at any time designate
additional transfer agents with respect to any series of Debt Securities
(Section 1002).
 
     Neither the Operating Partnership nor the Trustee shall be required to (i)
issue, register the transfer of or exchange Debt Securities of any series during
a period beginning at the opening of business 15 days before any selection of
Debt Securities of that series to be redeemed and ending at the close of
business of the day of mailing of the relevant notice of redemption; (ii)
register the transfer of or exchange any Debt Security, or portion thereof,
called for redemption, except the unredeemed portion of any Debt Security being
redeemed in part; or (iii) issue, register the transfer of or exchange any Debt
Security which has been surrendered for repayment at the option of the Holder,
except that portion, if any, of such Debt Security which is not to be so repaid
(Section 305).
 
MERGER, CONSOLIDATION OR SALE
 
     The Operating Partnership may consolidate with, or sell, lease or convey
all or substantially all of its assets to, or merge with or into, any other
person, provided (a) either the Operating Partnership shall be the continuing
person, or the successor (if other than the Operating Partnership) formed by or
resulting from any such consolidation or merger or which shall have received the
transfer of such assets shall expressly assume payment of the principal of (and
premium, if any) and interest on all of the Debt Securities and the due and
punctual performance and observance of all of the covenants and conditions
contained in the Indenture; (b) immediately after giving effect to such
transaction and treating any indebtedness which becomes an obligation of the
Operating Partnership or any Subsidiary as a result thereof as having been
incurred by the Operating Partnership or such Subsidiary at the time of such
transaction, no Event of Default under the Indenture, and no event which, after
notice or the lapse of time, or both, would become such an Event of Default,
shall have occurred and be continuing; and (c) an officers' certificate of the
Company as General Partner of the Operating Partnership and an opinion of
counsel covering such conditions shall be delivered to the Trustee (Sections 801
and 803).
 
CERTAIN COVENANTS
 
     Existence.  Except as permitted under "Merger, Consolidation or Sale," the
Indenture requires each of the Operating Partnership and the Company (if the
Company has guaranteed any Debt Securities) to do or cause to be done all things
necessary to preserve and keep in full force and effect its existence, rights
(partnership and statutory) and franchises; provided, however, that each of the
Operating Partnership and the Company shall not be required to preserve any
right or franchise if the Board of Directors of the Company determines that the
preservation thereof is no longer desirable in the conduct of the business of
the Operating Partnership and that the loss thereof is not disadvantageous in
any material respect to the Holders of the Debt Securities (Section 1004).
 
                                       11
<PAGE>   24
 
     Maintenance of Properties.  The Indenture requires each of the Operating
Partnership and the Company (if the Company has guaranteed any Debt Securities)
to cause all of its material properties used or useful in the conduct of its
business or the business of any Subsidiary to be maintained and kept in good
condition, repair and working order, all as in the judgment of the Operating
Partnership may be necessary so that the business carried on in connection
therewith may be properly and advantageously conducted at all times; provided,
however, that the Operating Partnership or the Company, as the case may be, and
its Subsidiaries shall not be prevented from selling or otherwise disposing of
their properties for value in the ordinary course of business. (Section 1006).
 
     Insurance.  The Indenture requires the Operating Partnership and each of
its Subsidiaries to keep its insurable Properties insured against loss or damage
with commercially reasonable amounts and types of insurance provided by insurers
of recognized responsibility. (Section 1007).
 
     Payment of Taxes and Other Claims.  The Indenture requires each of the
Operating Partnership and the Company (if the Company has guaranteed any Debt
Securities) to pay or discharge or cause to be paid or discharged, before the
same shall become delinquent, (i) all taxes, assessments and governmental
charges levied or imposed upon it or any Subsidiary or upon its income, profits
or property or that of any Subsidiary and (ii) all lawful claims for labor,
materials and supplies which, if unpaid, might by law become a lien upon the
property of the Operating Partnership or any Subsidiary; provided, however, that
the Operating Partnership or the Company shall not be required to pay or
discharge or cause to be paid or discharged any tax, assessment, charge or claim
whose amount or applicability is being contested in good faith. (Section 1008).
 
     Provision of Financial Information.  The Operating Partnership will file
with the Trustee copies of annual reports, quarterly reports and other documents
(the "Financial Reports") which the Operating Partnership files with the
Commission or would be required to file with the Commission pursuant to Sections
13 or 15(d) of the Exchange Act if the Operating Partnership were subject to
such Sections; provided, however, that if the Operating Partnership is not
subject to such Sections, it may, in lieu of filing Financial Reports of the
Operating Partnership with the Trustee, file Financial Reports of the Company if
they would be materially the same as those that would have been filed by the
Operating Partnership with the Commission pursuant to Sections 13 or 15(d) of
the Exchange Act.
 
     Additional Covenants.  Reference is made to the applicable Prospectus
Supplement for information with respect to any additional covenants specific to
a particular series of Debt Securities.
 
EVENTS OF DEFAULT, NOTICE AND WAIVER
 
     Unless otherwise provided in the Prospectus Supplement, the Indenture
provides that the following events are "Events of Default" with respect to any
series of Debt Securities issued thereunder: (a) default for 30 days in the
payment of any interest on any Debt Security of such series; (b) default in the
payment of any principal of (or premium, if any, on) any Debt Security of such
series when due; (c) default in making any sinking fund payment as required for
any Debt Security of such series; (d) default in the performance of any other
covenant or warranty of the Operating Partnership or the Company contained in
the Indenture with respect to any Debt Security of such series, continued for 60
days after written notice as provided in the Indenture; (e) default in the
payment of an aggregate principal amount exceeding $10,000,000 of any evidence
of indebtedness of the Operating Partnership or the Company (if the Company or
any subsidiary of the Company has guaranteed any indebtedness of the Operating
Partnership) or any mortgage, indenture, note, bond, capitalized lease or other
instrument under which such indebtedness is issued or by which such indebtedness
is secured, such default having continued after the expiration of any applicable
grace period and having resulted in the acceleration of the maturity of such
indebtedness, but only if such indebtedness is not discharged or such
acceleration is not rescinded or annulled; (f) certain events of bankruptcy,
insolvency or reorganization, or court appointment of a receiver, liquidator or
trustee of the Operating Partnership and the Company (if the Company has
guaranteed any Debt Securities), or any Significant Subsidiary or all or
substantially all of any of their respective property; and (g) any other Event
of Default provided with respect to a particular
 
                                       12
<PAGE>   25
 
series of Debt Securities (Section 501). The term "Significant Subsidiary" means
each significant Subsidiary (as defined in Regulation S-X promulgated under the
Securities Act) of the Operating Partnership or the Company, as the case may be.
(Section 101).
 
     If an Event of Default under the Indenture with respect to Debt Securities
of any series at the time Outstanding occurs and is continuing, then in every
such case the Trustee or the Holders of not less than a majority in principal
amount of the Outstanding Debt Securities of that series may declare the
principal amount (or, if the Debt Securities of that series are Original Issue
Discount Securities or Indexed Securities, such portion of the principal amount
as may be specified in the terms thereof) of all of the Debt Securities of that
series to be due and payable immediately by written notice thereof to the
Company (if the Company has guaranteed any Debt Securities under such Indenture)
and the Operating Partnership (and to the Trustee if given by the Holders).
However, any time after such a declaration of acceleration with respect to Debt
Securities of such series has been made, but before a judgment or decree for
payment of the money due has been obtained by the Trustee, the Holders of not
less then a majority in principal amount of Outstanding Debt Securities of such
series may rescind and annul such declaration and its consequences if (a) the
Operating Partnership shall have paid or deposited with the Trustee all required
payments of the principal of (and premium, if any) and interest on the Debt
Securities of such series plus certain fees, expenses, disbursements and
advances of the Trustee and (b) all Events of Default, other than the nonpayment
of accelerated principal or interest with respect to Debt Securities of such
series have been cured or waived as provided in the Indenture (Section 502). The
Indenture also provides that the Holders of not less than a majority in
principal amount of the Outstanding Debt Securities of any series may waive any
past default with respect to such series and its consequences, except a default
(x) in the payment of the principal of (or premium, if any) or interest on any
Debt Security of such series or (y) in respect of a covenant or provision
contained in the Indenture that cannot be modified or amended without the
consent of the Holder of each Outstanding Debt Security affected thereby
(Section 513).
 
     The Trustee is required to give notice to the Holders of Debt Securities
within 90 days of a default under the Indenture; provided, however, that the
Trustee may withhold notice to the Holders of any series of Debt Securities of
any default with respect to such series (except a default in the payment of the
principal of (or premium, if any) or interest on any Debt Security of such
series or in the payment of any sinking fund installment in respect of any Debt
Security of such series) if the Responsible Officers of the Trustee consider
such withholding to be in the interest of such Holders (Section 601).
 
     The Indenture provides that no Holders of Debt Securities of any series may
institute any proceedings, judicial or otherwise, with respect to the Indenture
or for any remedy thereunder, except in the case of failure of the Trustee, for
60 days, to act after it has received a written request to institute proceedings
in respect of an Event of Default from the Holders of not less than a majority
in principal amount of the Outstanding Debt Securities of that series, as well
as an offer of reasonable indemnity (Section 507). This provision will not
prevent, however, any Holder of Debt Securities from instituting suit for the
enforcement of payment of the principal of (and premium, if any) and interest on
such Debt Securities at the respective due date thereof (Section 508).
 
     Subject to provisions in the Indenture relating to its duties in case of
default, the Trustee is under no obligation to exercise any of its rights or
powers under the Indenture at the request or direction of any Holders of Debt
Securities of any series then Outstanding under the Indenture, unless such
Holders shall have offered to the Trustee reasonable security or indemnity
(Section 602). The Holders of not less than a majority in principal amount of
the Outstanding Debt Securities of any series shall have the right to direct the
time, method and place of conducting any proceeding for any remedy available to
the Trustee, or of exercising any trust or power conferred upon the Trustee.
However, the Trustee may refuse to follow any direction which is in conflict
with any law or the Indenture, which may involve the Trustee in personal
liability or which may be unduly prejudicial to the Holders of Debt Securities
of such series not joining therein (Section 512).
 
                                       13
<PAGE>   26
 
     Within 120 days after the close of each fiscal year, the Operating
Partnership and the Company (if the Company has guaranteed any Debt Securities)
must deliver to the Trustee a certificate, signed by one of several specified
officers of the Company, stating whether or not such officer has knowledge of
any default under the Indenture and, if so, specifying each such default and the
nature and status thereof (Section 1005).
 
MODIFICATION OF THE INDENTURE
 
     Modifications and amendments of provisions of the Indenture applicable to
any series may be made only with consent of the Holders of not less than a
majority in principal amount of all Outstanding Debt Securities which are
affected by such modification or amendment; provided, however, that no such
modification or amendment may, without the consent of the Holder of each such
Debt Security affected thereby, (a) change the Stated Maturity of the principal
of, or any installment of principal of or interest (or premium, if any) on, any
such Debt Security; (b) reduce the principal amount of, or the rate or amount of
interest on, or any premium payable on redemption of, any such Debt Security, or
reduce the amount of principal of an Original Issue Discount Security that would
be due and payable upon declaration of acceleration of the maturity thereof or
would be provable in bankruptcy, or adversely affect any right of repayment of
the Holder of any such Debt Security; (c) change the Place of Payment, or the
coin or currency, for payment of principal of, premium, if any, or interest on
any such Debt Security; (d) impair the right to institute suit for the
enforcement of any payment on or with respect to any such Debt Security on or
after the Stated Maturity thereof; (e) reduce the above-stated percentage of
Outstanding Debt Securities of any series necessary to modify or amend the
Indenture, to waive compliance with certain provisions thereof or certain
defaults and consequences thereunder or to reduce the quorum or voting
requirements set forth in the Indenture; or (f) modify any of the foregoing
provisions or any of the provisions relating to the waiver of certain past
defaults or certain covenants, except to increase the required percentage to
effect such action or to provide that certain other provisions may not be
modified or waived without the consent of the Holder of such Debt Security
(Section 902).
 
     The Holders of not less than a majority in principal amount of Outstanding
Debt Securities of a particular series have the right to waive compliance by the
Operating Partnership or the Company with certain covenants in the Indenture
relating to such series (Section 1010).
 
     Modifications and amendments of the Indenture may be made by the Operating
Partnership and the Company (if the Company has guaranteed any Debt Securities)
and the Trustee without the consent of any Holder of Debt Securities for any of
the following purposes: (i) to evidence the succession of another Person to the
Operating Partnership as obligor under the Indenture or succession of another
Person as Guarantor; (ii) to add to the covenants of the Operating Partnership
and the Company (if the Company has guaranteed any Debt Securities) for the
benefit of the Holders of all or any series of Debt Securities or to surrender
any right or power conferred upon the Operating Partnership or the Company in
the Indenture; (iii) to add Events of Default for the benefit of the Holders of
all or any series of Debt Securities; (iv) to add or change any provisions of
the Indenture to facilitate the issuance of Debt Securities in bearer form, or
to permit or facilitate the issuance of Debt Securities in uncertificated form,
provided that such action shall not adversely affect the interests of the
Holders of the Debt Securities of any series in any material respect; (v) to
change or eliminate any provisions of the Indenture, provided that any such
change or elimination shall become effective only when there are not Debt
Securities Outstanding of any series created prior thereto which are entitled to
the benefit of such provision; (vi) to secure the Debt Securities or Guarantees;
(vii) to establish the form or terms of Debt Securities of any series and any
related Guarantees; (viii) to provide for the acceptance of appointment by a
successor Trustee or facilitate the administration of the trust under the
Indenture by more than one Trustee; (ix) to cure any ambiguity, defect or
inconsistency in the Indenture, provided that such action shall not adversely
affect the interests of Holders of Debt Securities of any series in any material
respect; and (x) to supplement any of the provisions of the Indenture to the
extent necessary to permit or facilitate defeasance and discharge of any series
of such Debt Securities, provided that such action shall not
 
                                       14
<PAGE>   27
 
adversely affect the interests of the Holders of the Debt Securities of any
series in any material respect (Section 901).
 
     The Indenture provides that in determining whether the Holders of the
requisite principal amount of Outstanding Debt Securities of a series have given
any request, demand, authorization, direction, notice, consent or waiver
thereunder or whether a quorum is present at a meeting of Holders of Debt
Securities, (i) the principal amount of an Original Issue Discount Security that
shall be deemed to be outstanding shall be the amount of the principal thereof
that would be due and payable as of the date of such determination upon
declaration of acceleration of the maturity thereof, (ii) the principal amount
of a Debt Security denominated in a Foreign Currency that shall be deemed
outstanding shall be the U.S. dollar equivalent, determined on the issue date
for such Debt Security, of the principal amount (or, in the case of an Original
Issue Discount Security, the U.S. dollar equivalent on the issue date of such
Debt Security of the amount determined as provided in (i) above), (iii) the
principal amount of an Indexed Security that shall be deemed outstanding shall
be the principal face amount of such Indexed Security at original issuance,
unless otherwise provided with respect to such Indexed Security pursuant to
Section 301 of the Indenture, and (iv) Debt Securities owned by the Operating
Partnership or any other obligor upon the Debt Securities or any Affiliate of
the Operating Partnership or of such other obligor shall be disregarded (Section
101).
 
     The Indenture contains provisions for convening meetings of the Holders of
Debt Securities of a series (Section 1501). A meeting may be called at any time
by the Trustee, and also, upon request, by the Operating Partnership or the
Holders of at least 25% in principal amount of the Outstanding Debt Securities
of such series, in any such case upon notice given as provided in the Indenture
(Section 1502). Except for any consent that must be given by the Holder of each
Debt Security affected by certain modifications and amendments of the Indenture,
any resolution presented at a meeting or adjourned meeting duly reconvened at
which a quorum is present may be adopted by the affirmative vote of the Holders
of a majority in principal amount of the Outstanding Debt Securities of that
series; provided, however, that, except as referred to above, any resolution
with respect to any request, demand, authorization, direction, notice, consent,
waiver or other action that may be made, given or taken by the Holders of a
specified percentage, which is less than a majority, in principal amount of the
Outstanding Debt Securities of a series may be adopted at a meeting or adjourned
meeting duly reconvened at which a quorum is present by the affirmative vote of
the Holders of such specified percentage in principal amount of the Outstanding
Debt Securities of that series. Any resolution passed or decision taken at any
meeting of Holders of Debt Securities of any series duly held in accordance with
the Indenture will be binding on all Holders of Debt Securities of that series.
The quorum at any meeting called to adopt a resolution, and at any reconvened
meeting, will be Persons holding or representing a majority in principal amount
of the Outstanding Debt Securities of a series; provided, however, that if any
action is to be taken at such meeting with respect to a consent or waiver which
may be given by the Holders of not less than a specified percentage in principal
amount of the Outstanding Debt Securities of a series, the Persons holding or
representing such specified percentage in principal amount of the Outstanding
Debt Securities of such series will constitute a quorum (Section 1504).
 
     Notwithstanding the foregoing provisions, if any action is to be taken at a
meeting of Holders of Debt Securities of any series with respect to any request,
demand, authorization, direction, notice, consent, waiver or other action that
the Indenture expressly provides may be made, given or taken by the Holders of a
specified percentage in principal amount of all Outstanding Debt Securities
affected thereby, or of the Holders of such series and one or more additional
series: (i) there shall be no minimum quorum requirement for such meeting and
(ii) the principal amount of the Outstanding Debt Securities of such series that
vote in favor of such request, demand, authorization, direction, notice,
consent, waiver or other action shall be taken into account in determining
whether such request, demand, authorization, direction, notice, consent, waiver
or other action has been made, given or taken under the Indenture (Section
1504).
 
                                       15
<PAGE>   28
 
DISCHARGE, DEFEASANCE AND COVENANT DEFEASANCE
 
     Unless otherwise provided in the Prospectus Supplement, the Operating
Partnership or the Company (if the Company has guaranteed any Debt Securities
under such Indenture) may discharge certain obligations to Holders of any series
of Debt Securities that have not already been delivered to the Trustee for
cancellation and that either have become due and payable or will become due and
payable within one year (or are scheduled for redemption within one year) by
irrevocably depositing with the Trustee, in trust, funds in such currency or
currencies, currency unit or units or composite currency or currencies in which
such Debt Securities are payable in an amount sufficient to pay the entire
indebtedness on such Debt Securities in respect of principal (and premium, if
any) and interest to the date of such deposit (if such Debt Securities have
become due and payable) or to the Stated Maturity or Redemption Date, as the
case may be (Section 401).
 
     The Indenture provides that, unless otherwise provided in the Prospectus
Supplement, if the provisions of Article Fourteen are made applicable to the
Debt Securities of any series pursuant to Section 301 of the Indenture, the
Operating Partnership may elect either (a) to decease and be discharged from any
and all obligations with respect to such Debt Securities (except for the
obligation to pay Additional Amounts, if any, upon the occurrence of certain
events of tax, assessment or governmental charge with respect to payments on
such Debt Securities and the obligations to register the transfer or exchange of
such Debt Securities, to replace temporary or mutilated, destroyed, lost or
stolen Debt Securities, to maintain an office or agency in respect of such Debt
Securities to compensate the Trustee and to hold moneys for payment in trust)
("defeasance") (Section 1402) or (b) to be released from its obligations with
respect to such Debt Securities under Sections 1006 through 1008, inclusive, of
the Indenture (being the restrictions described under "Certain Covenants") or,
if provided pursuant to Section 301 of the Indenture, its obligations with
respect to any other covenant, and any omission to comply with such obligations
shall not constitute a default or an Event of Default with respect to such Debt
Securities ("covenant defeasance") (Section 1403), in either case upon the
irrevocable deposit by the Operating Partnership or the Company, as the case may
be, with the Trustee, in trust, of any amount, in such currency or currencies,
currency unit or units or composite currency or currencies in which such Debt
Securities are payable at Stated Maturity, or Government Obligations (as defined
below), or both applicable to such Debt Securities which through the scheduled
payment of principal and interest in accordance with their terms will provide
money in an amount sufficient to pay the principal of (and premium, if any) and
interest on such Debt Securities, and any mandatory sinking fund or analogous
payments thereon, on the scheduled due dates therefor.
 
     Such a trust may only be established if, among other things, the Operating
Partnership has delivered to the Trustee an Opinion of Counsel (as specified in
the Indenture) to the effect that the Holders of such Debt Securities will not
recognize income, gain or loss for U.S. federal income tax purposes as a result
of such defeasance or covenant defeasance and will be subject to U.S. federal
income tax on the same amounts, in the same manner and at the same times as
would have been the case if such defeasance or covenant defeasance had not
occurred, and such Opinion of Counsel, in the case of defeasance, must refer to
and be based upon a ruling of the Internal Revenue Service or a change in
applicable United States federal income tax law occurring after the date of the
Indenture (Section 1404).
 
     "Government Obligations" means securities which are (i) direct obligations
of the United States of America or the government which issued the Foreign
Currency in which the Debt Securities of a particular series are payable, for
the payment of which its full faith and credit is pledged or (ii) obligations of
a Person controlled or supervised by and acting as an agency or instrumentality
of the United States of America or such government which issued the Foreign
Currency in which the Debt Securities of such series are payable, the payment of
which is unconditionally guaranteed as a full faith and credit obligation by the
United States of America or such other government, which, in either case, are
not callable or redeemable at the option of the issuer thereof, and shall also
include a depository receipt issued by a bank or trust company as custodian with
respect to any such Government Obligation or a specific payment of interest on
or principal of any such Government Obligation held by such custodian for the
account of the holder of a depository receipt, provided that (except as required
by law) such custodian
 
                                       16
<PAGE>   29
 
is not authorized to make any deduction from the amount payable to the holder of
such depository receipt from any amount received by the custodian in respect of
the Government Obligation or the specific payment of interest on or principal of
the Government Obligation evidenced by such depository receipt (Section 101).
 
     Unless otherwise provided in the applicable Prospectus Supplement, if after
the Operating Partnership or the Company, as the case may be, has deposited
funds and/or Government Obligations to effect defeasance or covenant defeasance
with respect to Debt Securities of any series, (a) the Holder of a Debt Security
of such series is entitled to, and does, elect pursuant to Section 301 of the
Indenture or the terms of such Debt Security to receive payment in a currency,
currency unit or composite currency other than that in which such deposit has
been made in respect of such Debt Security, or (b) a Conversion Event (as
defined below) occurs in respect of the currency, currency unit or composite
currency in which such deposit has been made, the indebtedness represented by
such Debt Security shall be deemed to have been, and will be, fully discharged
and satisfied through the payment of the principal of (and premium, if any) and
interest on such Debt Security as the same becomes due out of the proceeds
yielded by converting the amount so deposited in respect of such Debt Security
into the currency, currency unit or composite currency in which such Debt
Security becomes payable as a result of such election or such cessation of usage
based on the applicable market exchange rate (Section 1405). "Conversion Event"
means the cessation of use of (i) a currency, currency unit or composite
currency either by the government of the country which issued such currency and
for the settlement of transactions by a central bank or other public
institutions or within the international banking community, (ii) the ECU either
within the European Monetary System or for the settlement of transactions by
public institutions of or within the European Communities or (iii) any currency
unit or composite currency other than the ECU for the purposes for which it was
established. (Section 101.) Unless otherwise provided in the applicable
Prospectus Supplement, all payments of principal of (and premium, if any) and
interest on any Debt Security that is payable in a Foreign Currency that cease
to be used by its government of issuance shall be made in U.S. dollars.
 
     In the event the Operating Partnership or the Company, as the case may be,
effects covenant defeasance with respect to any Debt Securities and such Debt
Securities are declared due and payable because of the occurrence of any Event
of Default other than the Event of Default described in clause (d) under "Events
of Default, Notice and Waiver" with respect to Section 1006 through 1008 of the
Indenture (which Sections would no longer be applicable to such Debt Securities)
or described in clause (g) under "Events of Default, Notice and Waiver" with
respect to any other covenant as to which there has been covenant defeasance,
the amount in such currency, currency unit or composite currency in which such
Debt Securities are payable, and Government Obligations on deposit with the
Trustee, will be sufficient to pay amounts due on such Debt Securities at the
time of their Stated Maturity but may not be sufficient to pay amounts due on
such Debt Securities at the time of the acceleration resulting from such Event
of Default. However, the Operating Partnership and the Company (if the Company
has guaranteed any Debt Securities) would remain liable to make payment of such
amounts due at the time of acceleration.
 
     The applicable Prospectus Supplement may further describe the provisions,
if any, permitting such defeasance or covenant defeasance, including any
modifications to the provisions described above, with respect to the Debt
Securities of a particular series.
 
SUBORDINATION
 
     The terms and conditions, if any, upon which the Debt Securities are
subordinated to other indebtedness of the Operating Partnership will be set
forth in the applicable Prospectus Supplement relating thereto. Such terms will
include a description of the indebtedness ranking senior to the Debt Securities,
the restrictions on payments to the Holders of such Debt Securities while a
default with respect to such senior indebtedness in continuing, the
restrictions, if any, on payments to the Holders of such Debt Securities
following an Event of Default, and provisions requiring Holders of such Debt
Securities to remit certain payments to holders of senior indebtedness.
 
                                       17
<PAGE>   30
 
                          DESCRIPTION OF CAPITAL STOCK
 
GENERAL
 
     As of June 30, 1997, the total number of shares of all classes of capital
stock that the Company had authority to issue was 1,000,000,000 shares,
consisting of (i) 660,500,000 shares of Common Stock, par value $0.0001 per
share, (ii) 2,000,000 shares of Class B Common Stock, par value $0.0001 per
share, (iii) 1,500,000 shares of Class C Common Stock, par value $0.0001 per
share, (iv) 1,000,000 shares of Series A Preferred Stock, par value $0.0001 per
share, (v) 5,000,000 shares of Series B Cumulative Redeemable Preferred Stock
("Series B Preferred Stock"), par value $0.0001 per share, and (vi) 330,000,000
shares of excess stock (the "Excess Stock").
 
     As of June 30, 1997, there were (i) 43,532,923 shares of Common Stock
issued and outstanding, (ii) 2,000,000 shares of Class B Common Stock issued and
outstanding, (iii) 1,176,470 shares of Class C Common Stock issued and
outstanding, (iv) 1,000,000 shares of Series A Preferred Stock issued and
outstanding, and (v) 4,250,000 shares of Series B Preferred Stock, issued and
outstanding. At any given time, there are reserved for issuance under the
Spieker Properties, Inc. 1993 Stock Incentive Plan (the "Plan") shares of the
Company's Common Stock equal to 9.9% of the number of shares of the Company's
stock outstanding (including shares of Common Stock issuable upon conversion of
partnership units in the Operating Partnership, Series A Preferred Stock, Class
B Common Stock and Class C Common Stock, and all classes of convertible
securities of the Company that may be issued in the future) as of the last day
of the immediately preceding quarter reduced by the number of shares of Common
Stock reserved for issuance under other stock compensation plans of the Company.
As of June 30, 1997, the Company had reserved for issuance under the Plan
5,361,748 shares of the Company's Common Stock and 150,000 shares of Common
Stock was reserved for issuance under the Spieker Properties, Inc. 1993
Directors Stock Option Plan. In addition, 2,531,645 shares of Common Stock have
been reserved for issuance upon the conversion of Class B Common Stock,
1,176,470 shares of Common Stock have been reserved for issuance upon the
conversion of Class C Common Stock and 1,219,512 shares of Common Stock have
been reserved for issuance upon the conversion of the Series A Preferred Stock.
Further, 7,239,389 shares of Common Stock have been reserved for issuance upon
the conversion of limited partnership units in the Operating Partnership.
 
COMMON STOCK
 
     The following description of the Common Stock sets forth certain general
terms and provisions of the Common Stock to which any Prospectus Supplement may
relate, including a Prospectus Supplement providing that Common Stock will be
issuable upon conversion of Preferred Stock or Depositary Shares or upon the
exercise of Warrants issued by the Company. This description is in all respects
subject to and qualified in its entirety by reference to the applicable
provisions of the Company's Articles of Incorporation, as amended and restated
to date, and Articles Supplementary (collectively, the "Charter") and its
Bylaws. The Common Stock is listed on the New York Stock Exchange under the
symbol "SPK." Chemical Mellon Shareholder Services, L.L.C. is the Company's
transfer agent.
 
     The holders of the outstanding Common Stock are entitled to one vote per
share for each director being elected and on all other matters voted on by
stockholders. The Charter does not provide for cumulative voting in the election
of directors.
 
     The shares of Common Stock offered hereby will, when issued, be fully paid
and nonassessable and will not be subject to preemptive or similar rights.
Subject to the preferential rights of the Series A Preferred Stock, Series B
Preferred Stock and any preferential rights of any other outstanding series of
capital stock, the holders of Common Stock are entitled to such distributions as
may be declared from time to time by the Board of Directors from funds available
for distribution to such holders. The Company currently pays regular quarterly
dividends to holders of Common Stock.
 
     In the event of a liquidation, dissolution or winding up of the Company,
the holders of Common Stock are entitled to receive ratably the assets remaining
after satisfaction of all liabilities and payment of
 
                                       18
<PAGE>   31
 
liquidation preferences and accrued dividends, if any, on Series A Preferred
Stock, Series B Preferred Stock, Class B Common Stock and Class C Common Stock
and any other series of capital stock that has a liquidation preference. The
rights of holders of Common Stock are subject to the rights and preferences
established by the Board of Directors for any capital stock that may
subsequently be issued by the Company.
 
     Subject to limitations prescribed by Maryland law and the Company's
Charter, the Board of Directors is authorized to reclassify any unissued portion
of the authorized shares of capital stock to provide for the issuance of shares
in other classes or series, including other classes or series of Common Stock,
to establish the number of shares in each class or series and to fix the
designation and any preferences, conversion and other rights, voting powers,
restrictions, limitations as to dividends, qualifications and terms and
conditions of redemption of such class or series. The rights, preferences,
privileges and restrictions of such class or series will be fixed by the
articles supplementary relating to such class or series. A Prospectus Supplement
will specify the terms of such class or series.
 
CLASS B COMMON STOCK
 
     The following description of the Company's Class B Common Stock is in all
respects subject to and qualified in its entirety by reference to the applicable
provisions of the Company's Charter, including the Articles Supplementary
applicable to the Class B Common Stock, and Bylaws. The Company has issued
2,000,000 shares of Class B Common Stock, par value $0.0001 per share, all of
which were outstanding as of June 30, 1997.
 
     The Class B Common Stock ranks on a parity with the Company's Common Stock
with respect to dividends. The Class B Common Stock was sold in May 1995 to an
institutional investor at a price per share of $25.00. The initial per share
dividend of the Class B Common Stock was set at $2.19, which was at a rate that
was equal to the dividend yield on shares of Common Stock sold concurrently with
the Class B Common Stock plus 0.25%. The dividend per share on the Class B
Common stock is increased or decreased by the same dollar amount as any increase
or decrease in the dividend distributions made to the holders of Common Stock.
The Company currently pays regular dividends to holders of Class B Common Stock.
 
     In the event of any liquidation, dissolution or winding up of the Company,
the holders of Class B Common Stock are entitled to receive, on a parity with
the holders of Class C Common Stock and prior and in preference to the holders
of Common Stock, an amount per share of Class B Common Stock equal to all
declared but unpaid dividends for each share of Class B Common Stock. The Class
B Common Stock has not been registered under the Securities Act. The
institutional investor who purchased the shares of Class B Common Stock has
certain demand registration rights for eight years following the May 1995 sale
of such shares to register in each instance Common Stock having a market value
of $1.0 million or more. Subject to certain limitations, the Class B Common
Stock may be converted into Common Stock based on a certain formula three years
after the May 1995 sale or earlier upon the occurrence of certain events
including a change in management. Under such formula, 2,000,000 outstanding
shares of Class B Common Stock are currently convertible into 2,531,645 shares
of Common Stock. The holder of Class B Common Stock is not entitled to vote on
matters voted on by stockholders of the Company.
 
CLASS C COMMON STOCK
 
     The following description of the Company's Class C Common Stock is in all
respects subject to and qualified in its entirety by reference to the applicable
provisions of the Company's Charter, including the Articles Supplementary
applicable to the Class C Common Stock, and Bylaws. The Company has issued
1,176,470 shares of Class C Common Stock, par value $0.0001 per share, all of
which were outstanding as of June 30, 1997.
 
     The Class C Common Stock ranks on a parity with the Company's Common Stock
and Class B Common Stock with respect to dividends. The Class C Common Stock was
sold in March 1996 to an institutional investor at a price per share of $25.50.
The initial per share dividend of the Class C Common
 
                                       19
<PAGE>   32
 
Stock was set at $1.73. The dividend per share on the Class C Common Stock is
increased or decreased by the same dollar amount as any increase or decrease in
the dividend distributions made to the holders of Common Stock. The Company
currently pays regular dividends to the holder of Class C Common Stock.
 
     In the event of any liquidation, dissolution or winding up of the Company,
the holders of Class C Common Stock are entitled to receive, on a parity with
the holders of Class B Common Stock and prior and in preference to the holders
of Common Stock, an amount per share of Class C Common Stock equal to all
declared but unpaid dividends for each share of Class C Common Stock. The Class
C Common Stock has not been registered under the Securities Act. The
institutional investor who purchased the shares of Class C Common Stock has
certain demand registration rights for eight years following the March 1996 sale
of such shares to register in each instance Common Stock having a market value
of $1.0 million or more. Subject to certain limitations, the Class C Common
Stock may be converted into Common Stock on a one-for-one basis three years
after the March 1996 sale or earlier upon the occurrence of certain events
including a change in management. The holders of Class C Common Stock are not
entitled to vote on matters voted on by stockholders of the Company.
 
SERIES A PREFERRED STOCK
 
     The following description of the Company's Series A Preferred Stock is in
all respects subject to and qualified in its entirety by reference to the
applicable provisions of the Company's Charter, including the Articles
Supplementary applicable to the Series A Preferred Stock, and Bylaws. The
Company is authorized to issue 1,000,000 shares of Series A Preferred Stock, all
of which were issued and outstanding as of June 30, 1997 and held of record by
one private investor. The Series A Preferred Stock ranks senior to the Company's
Common Stock, Class B Common Stock and Class C Common Stock as to dividends and
liquidation amounts. The dividend per share on the Series A Preferred Stock is
equal to the dividend per share on the Common Stock as multiplied by the number
of shares of Common Stock into which each share of Series A Preferred Stock is
convertible, provided that the dividend rate on the Series A Preferred Stock may
not be less than the initial dividend rate thereof. The dividends on the Series
A Preferred Stock are cumulative. The Company currently pays regular dividends
to holders of Series A Preferred Stock.
 
     In the event of any liquidation, dissolution or winding up of the Company,
the holders of Series A Preferred Stock are entitled to receive on a parity with
the holders of Series B Preferred Stock, prior and in preference to any
distribution to the holders of Common Stock, Class B Common Stock and Class C
Common Stock, an amount per share of Series A Preferred Stock equal to the sum
of $25.00 and any accrued but unpaid dividends with respect thereto. The Company
may redeem, subject to certain exceptions, from any source of funds legally
available therefor, on or at any time after May 13, 1999, any or all outstanding
shares of Series A Preferred Stock at the option of the Company by paying in
cash therefor an amount per share equal to the sum of $25.00 and any accrued but
unpaid dividends with respect thereto.
 
     Each share of Series A Preferred Stock is convertible, at the option of the
holder thereof at any time prior to a redemption date, into shares of Common
Stock based on a certain formula. Under such formula, the 1,000,000 outstanding
shares of Series A Preferred Stock are convertible into 1,219,512 shares of
Common Stock. The holder of each share of Series A Preferred Stock has the right
to one vote for each share of Common Stock into which such Series A Preferred
Stock can be converted, and with respect to such vote, such holder has the
voting rights and powers of the holders of each share of Common Stock, and is
entitled to notice of any stockholders' meeting in accordance with the Bylaws of
the Company, and is entitled to vote, together with holders of Common Stock,
with respect to any question upon which holders of Common Stock have the right
to vote.
 
                                       20
<PAGE>   33
 
SERIES B PREFERRED STOCK
 
     The following description of the Company's Series B Preferred Stock is in
all respects subject to and qualified in its entirety by reference to the
applicable provisions of the Charter, including the Company's Articles
Supplementary applicable to the Series B Preferred Stock, and Bylaws. The
Company is authorized to issue 5,000,000 shares of Series B Preferred Stock, of
which 4,250,000 shares were issued and outstanding as of June 30, 1997. The
holders of the Series B Preferred Stock are entitled to receive cumulative,
preferential cash dividends, when and as declared by the Board of Directors, of
$2.3625 per share. The Company currently pays regular dividends to holders of
Series B Preferred Stock.
 
     In the event of any liquidation, dissolution or winding up of the Company,
the holders of Series B Preferred Stock are entitled to receive on a parity with
the holders of Series A Preferred Stock, prior and in preference to any
distribution to the holders of Common Stock, Class B Common Stock and Class C
Common Stock, an amount per share of Series B Preferred Stock equal to the sum
of $25.00 and any accrued but unpaid dividends with respect thereto. The Company
may redeem, subject to certain exceptions, from any source of funds legally
available therefor, on or at any time after December 11, 2000, any or all
outstanding shares of Series B Preferred Stock at the option of the Company by
paying in cash therefor an amount per share equal to the sum of $25.00 and any
accrued but unpaid dividends with respect thereto, without interest.
 
     The Series B Preferred Stock is not convertible into or exchangeable for
any other property or securities of the Company at the option of the holder.
However, in order to preserve the Company's status as a REIT for federal income
tax purposes, the Series B Preferred Stock may be exchanged for Excess Stock.
See "Description of Common Stock -- General." Except in limited circumstances,
the holders of shares of Series B Preferred Stock have no voting rights.
 
RESTRICTIONS ON TRANSFER
 
     For the Company to qualify as a REIT under the Internal Revenue Code of
1986, as amended (the "Code"), not more than 50% in value of its outstanding
stock may be owned, directly or indirectly, by five or fewer individuals (as
defined in the Code) during the last half of a taxable year, the stock must be
beneficially owned by 100 or more persons during at least 335 days of a taxable
year of 12 months or during a proportionate part of a shorter taxable year and
certain percentages of the Company's gross income must be from particular
activities (see "Federal Income Tax Considerations -- Requirements for
Qualification -- Gross Income Tests"). To enable the Company to continue to
qualify as a REIT, the Charter restricts the acquisition of shares of common
stock and preferred stock.
 
     The Charter provides that, subject to certain exceptions specified in the
Charter, no stockholder may own, or be deemed to own by virtue of the
attribution provisions of the Code, more than 9.9% of the value of the
outstanding common stock and preferred stock (the "Ownership Limit"). The Board
of Directors may waive the Ownership Limit in certain limited situations if the
Board receives a ruling of the Internal Revenue Service (the "IRS")or an opinion
of counsel to the effect that such ownership will not jeopardize the Company's
status as a REIT. As a condition to such waiver, the Board of Directors may
require representations and undertakings from the applicant with respect to
preserving the REIT status of the Company. The Ownership Limit will not apply if
the Board of Directors and the stockholders of the Company determine that it is
no longer in the best interests of the Company to attempt to qualify, or to
continue to qualify, as a REIT. If the issuance or transfer of shares of common
stock or preferred stock to any person would cause such person to exceed the
Ownership Limit (unless a waiver of the Board of Directors has been obtained),
would cause the Company to be beneficially owned by fewer than 100 persons or
cause the Company to become "closely held" under Section 856(h) of the Code,
such issuance or transfer shall be null and void and the intended transferee
will acquire no rights to such shares.
 
     The Charter also provides that shares involved in a transfer or change in
capital structure that results in a person owning in excess of the Ownership
Limit (unless a waiver of the Board of Directors has been obtained), would cause
the Company to be beneficially owned by fewer than persons, or would cause
 
                                       21
<PAGE>   34
 
the Company to become "closely held" within the meaning of Section 856(h) of the
Code will automatically be exchanged for Excess Stock. All Excess Stock will be
transferred, without action by the stockholder, to the Company as trustee of a
trust for the exclusive benefit of the transferee or transferees to whom the
Excess Stock is ultimately transferred. While the Excess Stock is held in trust,
it will not be entitled to vote, it will not be considered for purposes of any
stockholder vote or the determination of a quorum for such vote and it will not
be entitled to participate in any distributions made by the Company, except upon
liquidation. The Company would have the right, for a period of 90 days during
the time the Excess Stock is held by the Company in trust, to purchase all or
any portion of the Excess Stock from the intended transferee at the lesser of
the price paid for the stock by the intended transferee and the closing market
price for the stock on the date the Company exercises its option to purchase.
 
     The Ownership Limit provision of the Charter will not be automatically
removed even if the real estate investment trust provisions of the Code are
changed so as to no longer contain any ownership concentration limitation or if
the ownership concentration limitation is increased. Except as otherwise
described above, any change in the Ownership Limit would require an amendment to
the Charter. Such amendments to the Charter require the affirmative vote of
holders owning a majority of the total number of shares of all classes of stock
outstanding and entitled to vote thereon. In addition to preserving the
Company's status as a real estate investment trust, the Ownership Limit may have
the effect of precluding an acquisition of control of the Company.
 
     All certificates representing shares of common stock and preferred stock
will bear a legend referring to the restrictions described above.
 
     All persons who own of record, more than 5% of the outstanding common stock
and preferred stock (or 1% if there are more than 200 but fewer than 2,000
stockholders or one-half of 1% if there are 200 or less stockholders of record)
must file an affidavit with the Company containing the information specified in
the Charter within 30 days after January 1 of each year. In addition, each
stockholder shall upon demand be required to disclose to the Company in writing
such information with respect to the direct, indirect and constructive ownership
of shares as the Board of Directors deems necessary to determine the Company's
status as a real estate investment trust and to ensure compliance with the
Ownership Limit.
 
     The articles supplementary, if applicable, for the Offered Securities may
also contain provisions that further restrict the ownership and transfer of the
Offered Securities. The applicable Prospectus Supplement will specify any
additional ownership limitation relating to the Offered Securities.
 
                         DESCRIPTION OF PREFERRED STOCK
 
GENERAL
 
     Subject to limitations prescribed by Maryland law and the Company's
Charter, the Board of Directors is authorized to issue, from the authorized but
unissued shares of capital stock of the Company, Preferred Stock in such classes
or series as the Board of Directors may determine and to establish from time to
time the number of shares of Preferred Stock to be included in any such class or
series and to fix the designation and any preferences, conversion and other
rights, voting powers, restrictions, limitations as to dividends, qualifications
and terms and conditions of redemption of the shares of any such class or
series, and such other subjects or matters as may be fixed by resolution of the
Board of Directors. The issuance of Preferred Stock may have the effect of
delaying, deferring or preventing a change in control of the Company.
 
     Preferred Stock, upon issuance against full payment of the purchase price
therefor, will be fully paid and nonassessable. The specific terms of a
particular class or series of Preferred Stock will be described in the
Prospectus Supplement relating to that class or series, including a Prospectus
Supplement providing that Preferred Stock may be issuable upon the exercise of
Warrants issued by the Company. The description of Preferred Stock set forth
below and the description of the terms of a particular class or
 
                                       22
<PAGE>   35
 
series of Preferred Stock set forth in a Prospectus Supplement do not purport to
be complete and are qualified in their entirety by reference to the articles
supplementary relating to that class or series.
 
     The preferences and other terms of the Preferred Stock of each class or
series will be fixed by the articles supplementary relating to such class or
series. A Prospectus Supplement, relating to each class or series, will specify
the terms of the Preferred Stock as follows:
 
          (1) The title and stated value of such Preferred Stock;
 
          (2) The number of shares of such Preferred Stock offered, the
     liquidation preference per share and the offering price of such Preferred
     Stock;
 
          (3) The dividend rate(s), period(s), and/or payment date(s) or
     method(s) of calculation thereof applicable to such Preferred Stock;
 
          (4) Whether such Preferred Stock is cumulative or not and, if
     cumulative, the date from which dividends on such Preferred Stock shall
     accumulate;
 
          (5) The provision for a sinking fund, if any, for such Preferred
     Stock;
 
          (6) The provision for redemption, if applicable, of such Preferred
     Stock;
 
          (7) Any listing of such Preferred Stock on any securities exchange;
 
          (8) The terms and conditions, if applicable, upon which such Preferred
     Stock will be converted into Common Stock of the Company, including the
     conversion price (or manner of calculation thereof);
 
          (9) A discussion of any material federal income tax considerations
     applicable to such Preferred Stock;
 
          (10) Any limitations on direct or beneficial ownership and
     restrictions on transfer, in each case as may be appropriate to preserve
     the status of the Company as a REIT;
 
          (11) The relative ranking and preferences of such Preferred Stock as
     to dividend rights and rights upon liquidation, dissolution or winding up
     of the affairs of the Company;
 
          (12) Any limitations on issuance of any class or series of preferred
     stock ranking senior to or on a parity with such class or series of
     Preferred Stock as to dividend rights and rights upon liquidation,
     dissolution or winding up of the affairs of the Company;
 
          (13) Any other specific terms, preferences, rights, limitations or
     restrictions of such Preferred Stock; and
 
          (14) Any voting rights of such Preferred Stock.
 
RANK
 
     Unless otherwise specified in the Prospectus Supplement, the Preferred
Stock will, with respect to dividend rights and rights upon liquidation,
dissolution or winding up of the Company, rank (i) senior to all classes or
series of common stock and excess stock of the Company, and to all equity
securities ranking junior to such Preferred Stock with respect to dividend
rights and rights upon liquidation, dissolution or winding up of the Company;
(ii) on a parity with all equity securities issued by the Company the terms of
which specifically provide that such equity securities rank on a parity with the
Preferred Stock with respect to dividends rights or rights upon liquidation,
dissolution or winding up of the Company; and (iii) junior to all equity
securities issued by the Company the terms of which specifically provide that
such equity securities rank senior to the Preferred Stock with respect to
dividend rights or rights upon liquidation, dissolution or winding up of the
Company.
 
                                       23
<PAGE>   36
 
CONVERSION RIGHTS
 
     The terms and conditions, if any, upon which any shares of any class or
series of Preferred Stock are convertible into Common Stock will be set forth in
the applicable Prospectus Supplement relating thereto. Such terms will include
the number of shares of Common Stock into which the shares of Preferred Stock
are convertible, the conversion price (or manner of calculation thereof), the
conversion period, provisions as to whether conversion will be at the option of
the holders of such class or series of Preferred Stock or the Company, the
events requiring an adjustment of the conversion price and provisions affecting
conversion in the event of the redemption of such class or series of Preferred
Stock.
 
                        DESCRIPTION OF DEPOSITARY SHARES
 
GENERAL
 
     The Company may issue Depositary Shares, each of which will represent a
fractional interest of a share of a particular class or series of Preferred
Stock, as specified in the applicable Prospectus Supplement. Shares of a class
or series of Preferred Stock represented by Depositary Shares will be deposited
under a separate Deposit Agreement (each, a "Deposit Agreement") among the
Company, the depositary named therein (the "Preferred Stock Depositary") and the
holders from time to time of the depositary receipts issued by the Preferred
Stock Depositary which will evidence the Depositary Shares ("Depositary
Receipts"). Subject to the terms of the Deposit Agreement, each owner of a
Depositary Receipt will be entitled, in proportion to the fractional interest of
a share of a particular class or series of Preferred Stock represented by the
Depositary Shares evidenced by such Depositary Receipt, to all the rights and
preferences of the class or series of the Preferred Stock represented by such
Depositary Shares (including dividend, voting, conversion, redemption and
liquidation rights).
 
     The Depositary Shares will be evidenced by Depositary Receipts issued
pursuant to the applicable Deposit Agreement. Immediately following the issuance
and delivery of the Preferred Stock by the Company to a Preferred Stock
Depositary, the Company will cause such Preferred Stock Depositary to issue, on
behalf of the Company, the Depositary Receipts. Copies of the applicable form of
Deposit Agreement and Depositary Receipt may be obtained from the Company upon
request, and the statements made hereunder relating to the Deposit Agreement and
the Depositary Receipt to be issued thereunder are summaries of certain
anticipated provisions thereof and do not purport to be complete and are subject
to, and qualified in their entirety by reference to, all of the provisions of
the applicable Deposit Agreement and related Depositary Receipts.
 
DIVIDENDS AND OTHER DISTRIBUTIONS
 
     The Preferred Stock Depositary will distribute all cash dividends or other
cash distributions received in respect of a class or series of Preferred Stock
to the record holders of Depositary Receipts evidencing the related Depositary
Shares in proportion to the number of the such Depositary Receipts owned by such
holders, subject to certain obligations of holders to file proofs, certificates
and other information and to pay certain charges and expenses to such Preferred
Stock Depositary.
 
     In the event of a distribution other than in cash, the Preferred Stock
Depositary will distribute property received by it to the record holders of
Depositary Receipts entitled thereto, subject to certain obligations of holders
to file proofs, certificates and other information and to pay certain charges
and expenses to the Preferred Stock Depositary, unless such Preferred Stock
Depositary determines that it is not feasible to make such distribution, in
which case the Preferred Stock Depositary may, with the approval of the Company,
sell such property and distribute the net proceeds from such sale to such
holders.
 
     No distribution will be made in respect of any Depositary Share to the
extent that it represents any class or series of Preferred Stock converted into
Excess Stock or otherwise converted or exchanged.
 
                                       24
<PAGE>   37
 
WITHDRAWAL OF STOCK
 
     Upon surrender of the Depositary Receipts at the corporate trust office of
the Preferred Stock Depositary (unless the related Depositary Shares have
previously been called for redemption or converted or converted into Excess
Stock or otherwise), the holders thereof will be entitled to delivery at such
office, to or upon each such holder's order, of the number of whole or
fractional shares of the class or series of Preferred Stock and any money or
other property represented by the Depositary Shares evidenced by such Depositary
Receipts. Holders of Depositary Receipts will be entitled to receive whole or
fractional shares of the related class or series of Preferred Stock on the basis
of the proportion of Preferred Stock represented by each Depositary Share as
specified in the applicable Prospectus Supplement, but holders of such shares of
Preferred Stock will not thereafter be entitled to receive Depositary Shares
therefor. If the Depositary Receipts delivered by the holder evidence a number
of Depositary Shares in excess of the number of Depositary Shares representing
the number of shares of Preferred Stock to be withdrawn, the Preferred Stock
Depositary will deliver to such holder at the same time a new Depositary Receipt
evidencing such excess number of Depositary Shares.
 
REDEMPTION OF DEPOSITARY SHARES
 
     Whenever the Company redeems shares of Preferred Stock held by the
Preferred Stock Depositary, the Preferred Stock Depositary will redeem as of the
same redemption date the number of the Depositary Shares representing shares of
such class or series of Preferred Stock so redeemed, provided the Company shall
have paid in full to the Preferred Stock Depositary the redemption price of the
Preferred Stock to be redeemed plus an amount equal to any accrued and unpaid
dividends thereon to the date fixed for redemption. The redemption price per
Depositary Share will be equal to the corresponding proportion of the redemption
price and any other amounts per share payable with respect to such class or
series of Preferred Stock. If fewer than all the Depositary Shares are to be
redeemed, the Depositary Shares to be redeemed will be selected pro rata (as
nearly as may be practicable without creating fractional Depositary Shares) or
by any other equitable method determined by the Company that will not result in
the issuance of any Excess Stock.
 
     From and after the date fixed for redemption, all dividends in respect of
the shares of a class of series of Preferred Stock so called for redemption will
cease to accrue, the Depositary Shares so called for redemption will no longer
be deemed to be outstanding and all rights of the holders of the Depositary
Receipts evidencing the Depositary Shares so called for redemption will cease,
except the right to receive any moneys payable upon such redemption and any
money or other property to which the holders of such Depositary Receipts were
entitled upon such redemption upon surrender thereof to the Preferred Stock
Depositary.
 
VOTING OF THE PREFERRED STOCK
 
     Upon receipt of notice of any meeting at which the holders of a class or
series of Preferred Stock deposited with the Preferred Stock Depositary are
entitled to vote, the Preferred Stock Depositary will mail the information
contained in such notice of meeting to the record holders of the Depositary
Receipts evidencing the Depositary Shares which represent such class or series
of Preferred Stock. Each record holder of Depositary Receipts evidencing
Depositary Shares on the record date (which will be the same date as the record
date for such class or series of Preferred Stock) will be entitled to instruct
the Preferred Stock Depositary as to the exercise of the voting rights
pertaining to the amount of Preferred Stock represented by such holder's
Depositary Shares. The Preferred Stock Depositary will vote the amount of such
class or series of Preferred Stock represented by such Depositary Shares in
accordance with such instructions, and the Company will agree to take all
reasonable action which may be deemed necessary by the Preferred Stock
Depositary in order to enable the Preferred Stock Depositary to do so. The
Preferred Stock Depositary will abstain from voting the amount of Preferred
Stock represented by such Depositary Shares to the extent it does not receive
specific instructions from the holders of Depositary Receipts evidencing such
Depositary Shares. The Preferred Stock Depositary will not be responsible for
any failure to carry out any instruction to vote, or for the manner or effect of
any such vote
 
                                       25
<PAGE>   38
 
made, as long as any such action or non-action is in good faith and does not
result from negligence or willful misconduct of the Preferred Stock Depositary.
 
LIQUIDATION PREFERENCE
 
     In the event of the liquidation, dissolution or winding up of the Company
whether voluntary or involuntary, the holders of each Depositary Receipt will be
entitled to the fraction of the liquidation preference accorded each share of
Preferred Stock represented by the Depositary Share evidenced by such Depositary
Receipt as set forth in the applicable Prospectus Supplement.
 
CONVERSION OF PREFERRED STOCK
 
     The Depositary Shares, as such, will not be convertible into Common Stock
or any other securities or property of the Company, except in connection with
certain exchanges in connection with the preservation of the Company's status as
a REIT. See "Description of Common Stock -- Restrictions on Transfer."
Nevertheless, if so specified in the applicable Prospectus Supplement relating
to an offering of Depositary Shares, the Depositary Receipts may be surrendered
by holders thereof to the applicable Preferred Stock Depositary with written
instructions to the Preferred Stock Depositary to instruct the Company to cause
conversion of a class or series of Preferred Stock represented by the Depositary
Shares evidenced by such Depositary Receipts into whole shares of Common Stock,
other shares of a class or series of Preferred Stock (including Excess Stock) of
the Company or other shares of stock, and the Company has agreed that upon
receipt of such instructions and any amounts payable in respect thereof, it will
cause the conversion thereof utilizing the same procedures as those provided for
delivery of Preferred Stock to effect such conversion. If the Depositary Shares
evidenced by a Depositary Receipt are to be converted in part only, a Depositary
Receipt or Receipts will be issued for any Depositary Shares not to be
converted. No fractional shares of Common Stock will be issued upon conversion,
and if such conversion will result in a fractional share being issued, an amount
will be paid in cash by the Company equal to the value of the fractional
interest based upon the closing price of the Common Stock on the last business
day prior to the conversion.
 
AMENDMENT AND TERMINATION OF A DEPOSIT AGREEMENT
 
     The form of Depositary Receipt evidencing Depositary Shares which represent
the Preferred Stock and any provision of the Deposit Agreement may at any time
be amended by agreement between the Company and the Preferred Stock Depositary.
However, any amendment that materially and adversely alters the rights of the
holders of Depositary Receipts or that would be materially and adversely
inconsistent with the rights granted to the holders of the related Preferred
Stock will not be effective unless such amendment has been approved by the
existing holders of at least two-thirds of the applicable Depositary Shares
evidenced by the applicable Depositary Receipts then outstanding. No amendment
shall impair the right, subject to certain anticipated exceptions in the Deposit
Agreements, of any holder of Depositary Receipts to surrender any Depositary
Receipt with instructions to deliver to the holder the related class or series
of Preferred Stock and all money and other property, if any, represented
thereby, except in order to comply with law. Every holder of an outstanding
Depositary Receipt at the time any such amendment becomes effective shall be
deemed, by continuing to hold such Depositary Receipt, to consent and agree to
such amendment and to be bound by the applicable Deposit Agreement as amended
thereby.
 
     The Deposit Agreement may be terminated by the Company upon not less than
30 days' prior written notice to the Preferred Stock Depositary if (i) such
termination is necessary to preserve the Company's status as a REIT or (ii) a
majority of each series class or of Preferred Stock subject to such Deposit
Agreement consents to such termination, whereupon the Preferred Stock Depositary
will deliver or make available to each holder of Depositary Receipts, upon
surrender of the Depositary Receipts held by such holder, such number of whole
or fractional shares of each Preferred Stock as are represented by the
Depositary Shares evidenced by such Depositary Receipts together with any other
property held by preferred Stock Depositary with respect to such Depositary
Receipts. The Company has agreed that if
 
                                       26
<PAGE>   39
 
the Deposit Agreement is terminated to preserve the Company's status as a REIT,
then the Company will use its best efforts to list each class or series of
Preferred Stock issued upon surrender of the related Depositary Shares. In
addition, the Deposit Agreement will automatically terminate if (i) all
outstanding Depositary Shares shall have been redeemed, (ii) there shall have
been a final distribution in respect of each class or series of Preferred Stock
in connection with any liquidation, dissolution or winding up of the Company and
such distribution shall have been distributed to the holders of the Depositary
Receipts evidencing the Depositary Shares representing such class or series of
Preferred Stock or (iii) each share of the related Preferred Stock shall have
been converted into stock of the Company not so represented by Depositary
Shares.
 
CHARGES OF A PREFERRED STOCK DEPOSITARY
 
     The Company will pay all transfer and other taxes and governmental charges
arising solely from the existence of the Deposit Agreement. In addition, the
Company will pay the fees and expenses of the Preferred Stock Depositary in
connection with the performance of its duties under the Deposit Agreement.
However, holders of Depositary Receipts will pay the fees and expenses of the
Preferred Stock Depositary for any duties requested by such holders to be
performed which are outside of those expressly provided for in the Deposit
Agreement.
 
RESIGNATION AND REMOVAL OF DEPOSITARY
 
     The Preferred Stock Depositary may resign at any time by delivering to the
Company notice of its election to do so, and the Company may at any time remove
the Preferred Stock Depositary, any such resignation or removal to take effect
upon the appointment of a successor Preferred Stock Depositary. A successor
Preferred Stock Depositary must be appointed within 60 days after delivery of
the notice of resignation or removal and must be a bank or trust company having
its principal office in the United States and having a combined capital and
surplus of at least $50,000,000.
 
MISCELLANEOUS
 
     The Preferred Stock Depositary will forward to holders of Depositary
Receipts any reports and communications from the Company which are received by
the Preferred Stock Depositary with respect to the related Preferred Stock.
 
     Neither the Preferred Stock Depositary nor the Company will be liable if it
is prevented from or delayed in, by law or any circumstances beyond its control,
performing its obligations under the Deposit Agreement. The obligations of the
Company and the Preferred Stock Depositary under the Deposit Agreement will be
limited to performing their duties thereunder in good faith and without
negligence (in the case of any action or inaction in the voting of a class or
series of Preferred Stock represented by the Depositary Shares), gross
negligence or willful misconduct, and the Company and the Preferred Stock
Depositary will not be obligated to prosecute or defend any legal proceeding in
respect of any Depositary Receipts, Depositary Shares or shares of a class or
series of Preferred Stock represented thereby unless satisfactory indemnity is
furnished. The Company and the Preferred Stock Depositary may rely on written
advice of counsel or accountants, or information provided by persons presenting
shares of Preferred Stock represented thereby for deposit, holders of Depositary
Receipts or other persons believed in good faith to be competent to give such
information, and on documents believed in good faith to be genuine and signed by
a proper party.
 
     In the event a Preferred Stock Depositary shall receive conflicting claims,
requests or instructions from any holders of Depositary Receipts, on the one
hand, and the Company, on the other hand, the Preferred Stock Depositary shall
be entitled to act on such claims, requests or instructions received from the
Company.
 
                                       27
<PAGE>   40
 
                            DESCRIPTION OF WARRANTS
 
     The Company has no Warrants outstanding (other than options issued under
the Company's employee stock option plan). The Company may issue Warrants for
the purchase of Preferred Stock or Common Stock. Warrants may be issued
independently or together with any other Offered Securities offered by any
Prospectus Supplement and may be attached to or separate from such Offered
Securities. Each series of Warrants will be issued under a separate warrant
agreement (each, a "Warrant Agreement") to be entered into between the Company
and a warrant agent specified in the applicable Prospectus Supplement (the
"Warrant Agent"). The Warrant Agent will act solely as an agent of the Company
in connection with the Warrants of such series and will not assume any
obligation or relationship of agency or trust for or with any provisions of the
Warrants offered hereby. Further terms of the Warrants and the applicable
Warrant Agreements will be set forth in the applicable Prospectus Supplement.
 
     The applicable Prospectus Supplement will describe the terms of the
Warrants in respect of which this Prospectus is being delivered, including,
where applicable, the following: (1) the title of such Warrants; (2) the
aggregate number of such Warrants; (3) the price or prices at which such
Warrants will be issued; (4) the designation, terms and number of shares of
Preferred Stock or Common Stock purchasable upon exercise of such Warrants; (5)
the designation and terms of the Offered Securities, if any, with which such
Warrants are issued and the number of such Warrants issued with each such
Offered Security; (6) the date, if any, on and after which such Warrants and the
related Preferred Stock or Common Stock will be separately transferable; (7) the
price at which each share of Preferred Stock or Common Stock purchasable upon
exercise of such Warrants may be purchased; (8) the date on which the right to
exercise such Warrants shall commence and the date on which such right shall
expire; (9) the minimum or maximum amount of such Warrants which may be
exercised at any one time; (10) information with respect to book-entry
procedures, if any; (11) a discussion of certain federal income tax
considerations; and (12) any other terms of such Warrants, including terms,
procedures and limitations relating to the exchange and exercise of such
Warrants.
 
             CERTAIN PROVISIONS OF THE COMPANY'S CHARTER AND BYLAWS
 
     Certain provisions of the Company's Charter and Bylaws might discourage
certain types of transactions that involve an actual or threatened change of
control of the Company. The Ownership Limit may delay or impede a transaction or
a change in control of the Company that might involve a premium price for the
Company's capital stock or otherwise be in the best interest of the
stockholders. See "Description of Common Stock -- Restrictions on Transfer."
Pursuant to the Company's Charter and Bylaws, the Company's Board of Directors
is divided into three classes of directors, each class serving staggered
three-year terms. In addition, directors may only be removed for cause and with
the vote of 80% of the shares eligible to vote. These provisions may reduce the
possibility of a tender offer or an attempt to change control of the Company.
The issuance of Preferred Stock by the Board of Directors may also have the
effect of delaying, deferring or preventing a change in control of the Company.
See "Description of Preferred Stock -- General."
 
                       FEDERAL INCOME TAX CONSIDERATIONS
 
     The following summary of material federal income tax considerations is
based on current law and does not purport to deal with all aspects of taxation
that may be relevant to particular stockholders in light of their personal
investment or tax circumstances, or to certain types of stockholders (including
insurance companies, financial institutions and broker-dealers) subject to
special treatment under the federal income tax laws. Certain federal income tax
considerations relevant to holders of the Offered Securities will be provided in
the applicable Prospectus Supplement relating thereto.
 
                                       28
<PAGE>   41
 
     EACH PROSPECTIVE PURCHASER IS ADVISED TO CONSULT HIS OWN TAX ADVISOR
REGARDING THE SPECIFIC TAX CONSEQUENCES TO HIM OF THE PURCHASE, OWNERSHIP AND
SALE OF THE OFFERED SECURITIES.
 
GENERAL
 
     The Company believes that since its formation it has operated in a manner
that permits it to satisfy the requirements for taxation as a REIT under the
applicable provisions of the Code. The Company intends to continue to operate to
satisfy such requirement. No assurance can be given, however, that such
requirements will be met.
 
     The sections of the Code relating to qualification and operation as a REIT
are highly technical and complex. The following sets forth the material aspects
of the laws that govern the federal income tax treatment of a REIT and its
stockholders. This summary is qualified in its entirety by the applicable Code
provisions, rules and regulations thereunder, and administrative and judicial
interpretations thereof. Morrison & Foerster LLP has acted as tax counsel to the
Company in connection with the Company's election to be taxed as a REIT.
 
     In the opinion of Morrison & Foerster LLP, commencing with the Company's
taxable year ended December 31, 1993, the Company has been organized in
conformity with the requirements for qualification as a REIT, and its method of
operation has and will enable it to continue to meet the requirements for
qualification and taxation as a REIT under the Code. It must be emphasized that
this opinion is based on various assumptions and is conditioned upon certain
representations made by the Company as to factual matters. Moreover, such
qualification and taxation as a REIT depends upon the Company's ability to meet,
through actual annual operating results, distribution levels and diversity of
stock ownership, the various qualification tests imposed under the Code
discussed below, the results of which will not be reviewed by Morrison &
Foerster LLP. Accordingly, no assurance can be given that the actual results of
the Company's operations for any particular taxable year will satisfy such
requirements. See "-- Failure to Qualify."
 
     In brief, if certain detailed conditions imposed by the REIT provisions of
the Code are satisfied, entities, such as the Company, that invest primarily in
real estate and that otherwise would be treated for federal income tax purposes
as corporations, are generally not taxed at the corporate level on their "REIT
taxable income" that is currently distributed to stockholders. This treatment
substantially eliminates the "double taxation" (i.e., taxation at both the
corporate and stockholder levels) that generally results from investing in
corporations.
 
     If the Company fails to qualify as a REIT in any year, however, it will be
subject to federal income tax as if it were a domestic corporation, and its
stockholders will be taxed in the same manner as stockholders of ordinary
corporations. In this event, the Company could be subject to potentially
significant tax liabilities and the amount of cash available for distribution to
its stockholders could be reduced.
 
TAXATION OF THE COMPANY
 
     In any year in which the Company qualifies as a REIT, in general it will
not be subject to federal income tax on that portion of its net income that it
distributes to stockholders. However, the Company will be subject to federal
income tax as follows: First, the Company will be taxed at regular corporate
rates on any undistributed real estate investment trust taxable income,
including undistributed net capital gains. (However, beginning in 1998, a REIT
can elect to "pass through" any of its taxes paid on its undistributed net
capital gains income to its stockholders on a pro rata basis.) Second, under
certain circumstances, the Company may be subject to the "alternative minimum
tax" on its items of tax preference. Third, if the Company has (i) net income
from the sale or other disposition of "foreclosure property" which is held
primarily for sale to customers in the ordinary course of business or (ii) other
nonqualifying income from foreclosure property, it will be subject to tax at the
highest corporate rate on such income. Fourth, if the Company has net income
from prohibited transactions (which are, in general,
 
                                       29
<PAGE>   42
 
certain sales or other dispositions of property held primarily for sale to
customers in the ordinary course of business, other than property held for at
least four years, foreclosure property, and, beginning in 1998, property
involuntarily converted), such income will be subject to a 100% tax. Fifth, if
the Company should fail to satisfy the 75% or the 95% tests (as discussed
below), and has nonetheless maintained its qualification as a REIT because
certain other requirements have been satisfied, it will be subject to a 100% tax
on the net income attributable to the greater of the amount by which the REIT
fails the 75% or 95% test. Sixth, if the Company should fail to distribute
during each calendar year at least the sum of (i) 85% of its real estate
investment trust ordinary income for such year, (ii) 95% of its real estate
investment trust capital gain net income for such year, and (iii) any
undistributed taxable income from prior periods, the Company would be subject to
a 4% excise tax on the excess of such required distribution over the amounts
actually distributed. Seventh, if the Company acquires any asset from a C
corporation (i.e., generally a corporation subject to full corporate-level tax)
in a transaction in which the basis of the asset in the Company's hands is
determined by reference to the basis of the asset (or any other property) in the
hands of the C corporation, and the Company recognizes gain on the disposition
of such asset during the 10 year period beginning on the date on which such
asset was acquired by the REIT, then, to the extent of any built-in gain at the
time of acquisition, such gain will be subject to tax at the highest regular
corporate rate.
 
REQUIREMENTS FOR QUALIFICATION
 
     The Code defines a REIT as a corporation, trust or association (1) which is
managed by one or more trustees or directors; (2) the beneficial ownership of
which is evidenced by transferable shares, or by transferable certificates of
beneficial interest; (3) which would be taxable as a domestic corporation, but
for Sections 856 through 860 of the Code; (4) which is neither a financial
institution nor an insurance company subject to certain provisions of the Code;
(5) the beneficial ownership of which is held by 100 or more persons; (6) not
more than 50% in value of the outstanding stock of which is owned, directly or
indirectly, by five or fewer individuals (as defined in the Code) at any time
during the last half of each taxable year; and (7) which meets certain other
tests, described below, regarding the nature of income and assets. The Code
provides that conditions (1) to (4), inclusive, must be met during the entire
taxable year and that condition (5) must be met during at least 335 days of a
taxable year of 12 months, or during a proportionate part of a taxable year of
less than 12 months. Conditions (5) and (6) will not apply until after the first
taxable year for which an election is made by the Company to be taxed as a REIT.
Beginning in 1998, a REIT's failure to satisfy condition (6) during a taxable
year will not result in its disqualification as REIT under the Code for such
taxable year as long as (i) the REIT satisfies the stockholder demand statement
requirements described in the succeeding paragraph and (ii) the REIT did not
know, and exercising due diligence, would not have known, whether it had failed
condition (6).
 
     In order to ensure compliance with the ownership tests described above, the
Company has placed certain restrictions on the transfer of the Common Stock and
Preferred Stock to prevent further concentration of stock ownership. Moreover,
to evidence compliance with these requirements, the Company must maintain
records which disclose the actual ownership of its outstanding Common Stock and
Preferred Stock. In fulfilling its obligations to maintain records, the Company
must and will demand written statements each year from the record holders of
designated percentages of its Common Stock and Preferred Stock disclosing the
actual owners of such Common Stock and Preferred Stock. A list of those persons
failing or refusing to comply with such demand must be maintained as part of the
Company's records. A stockholder failing or refusing to comply with the
Company's written demand must submit with his tax returns a similar statement
disclosing the actual ownership of Common Stock and Preferred Stock and certain
other information. In addition, the Company's Charter provides restrictions
regarding the transfer of its shares that are intended to assist the Company in
continuing to satisfy the share ownership requirements. See "Description of
Common Stock -- Restrictions on Transfer."
 
     Although the Company intends to satisfy the stockholder demand statement
requirements described in the preceding paragraph, beginning in 1998, its
failure to satisfy these requirements will not result in
 
                                       30
<PAGE>   43
 
its disqualification as a REIT under the Code but may result in the imposition
of IRS penalties against the Company.
 
     In the case of a REIT that is a partner in a partnership, Treasury
Regulations provide that the REIT will be deemed to own its proportionate share
of the assets of the partnership and will be deemed to be entitled to the income
of the partnership attributable to such share. In addition, the character of the
assets and gross income of a partnership shall retain the same character in the
hands a partner qualifying as a REIT for purposes of Section 856 of the Code,
including satisfying the gross income tests and the asset tests, described
below. Thus, the Company's proportionate share of the assets, liabilities and
items of income of the Operating Partnership will be treated as assets,
liabilities and items of income of the Company for purposes of applying the
requirements described below.
 
  ASSET TESTS
 
     At the close of each quarter of the Company's taxable year, the Company
must satisfy two tests relating to the nature of its assets. First, at least 75%
of the value of the Company's total assets must be represented by interests in
real property, interests in mortgages on real property, shares in other REITs,
cash, cash items and government securities (as well as certain temporary
investments in stock or debt instruments purchased with the proceeds of new
capital raised by the Company). Second, although the remaining 25% of the
Company's assets generally may be invested without restriction, securities in
this class may not exceed either (i) 5% of the value of the Company's total
assets as to any one nongovernment issuer, or (ii) 10% of the outstanding voting
securities of any one issuer. The Company's investment in the Properties through
its interest in the Operating Partnership constitutes qualified assets for
purposes of the 75% asset test. In addition, the Company may own 100% of
"qualified REIT subsidiaries," which are, in general, 100% owned, corporate
subsidiaries of a REIT. All assets, liabilities, and items of income, deduction,
and credit of such a qualified REIT subsidiary will be treated as owned and
realized directly by the Company. The Company's investment in Spieker Northwest,
Inc. is not a qualifying asset for purposes of the 75% asset test. The Company
expects, however, that such investment will continue to represent less than 5%
of the Company's total assets and, together with any other nonqualifying assets,
will continue to represent less than 25% of the Company's total assets.
 
  GROSS INCOME TESTS
 
     There are three separate percentage tests (two beginning in 1998)relating
to the sources of the Company's gross income which must be satisfied for each
taxable year. For purposes of these tests, where the Company invests in a
partnership, the Company will be treated as receiving its share of the income
and loss of the partnership, and the gross income of the partnership will retain
the same character in the hands of the Company as it has in the hands of the
partnership. See "-- Tax Aspects of the Company's Investment in the Operating
Partnerships -- General."
 
     The 75% Test.  At least 75% of the Company's gross income for the taxable
year must be "qualifying income." Qualifying income generally includes (i) rents
from real property (except as modified below); (ii) interest on obligations
collateralized by mortgages on, or interests in, real property; (iii) gains from
the sale or other disposition of interests in real property and real estate
mortgages, other than gain from property held primarily for sale to customers in
the ordinary course of the Company's trade or business ("dealer property"); (iv)
dividends or other distributions on shares in other REITs, as well as gain from
the sale of such shares; (v) abatements and refunds of real property taxes; (vi)
income from the operation, and gain from the sale, of property acquired at or in
lieu of a foreclosure of the mortgage collateralized by such property
("foreclosure property"); and (vii) commitment fees received for agreeing to
make loans collateralized by mortgages on real property or to purchase or lease
real property.
 
     Rents received from a tenant will not, however, qualify as rents from real
property in satisfying the 75% test (or the 95% test described below) if the
Company, or an owner of 10% or more of the Company, directly or constructively
owns 10% or more of such tenant (a "related party tenant"). In addition, if rent
attributable to personal property, leased in connection with a lease of real
property, is
 
                                       31
<PAGE>   44
 
greater than 15% of the total rent received under the lease, then the portion of
rent attributable to such personal property will not qualify as rents from real
property. Moreover, an amount received or accrued generally will not qualify as
rents from real property (or as interest income) for purposes of the 75% and 95%
tests if it is based in whole or in part on the income or profits of any person.
Rent or interest will not be disqualified, however, solely by reason of being
based on a fixed percentage or percentages of receipts or sales. Finally, for
rents received to qualify as rents from real property, the Company generally
must not operate or manage the property or furnish or render services to
tenants, other than through an "independent contractor" from whom the Company
derives no revenue. The "independent contractor" requirement, however, does not
apply to the extent that the services provided by the Company are "usually or
customarily rendered" in connection with the rental of space for occupancy only,
and are not otherwise considered "rendered to the occupant." For both the
related party tenant rules and determining whether an entity qualifies as an
independent contractor of a REIT, certain attribution rules of the Code apply,
pursuant to which shares of a REIT held by one entity are deemed held by
another.
 
     Under current law, if a REIT provides impermissible services to its
tenants, all of the rent from those tenants can be disqualified from satisfying
the 75% test and 95% test (described below). Beginning in 1998, however, rents
will not be disqualified if a REIT provides de minimis, impermissible services.
For this purpose, services provided to tenants of a property are considered de
minimis where income derived from the services rendered equals 1% or less of all
income derived from the property (threshold determined on a property-by-property
basis).
 
     The Company, through the Operating Partnership (which is not an independent
contractor of the Company), will provide certain services with respect to the
Properties and any newly acquired Properties. The Company believes that the
services provided by the Operating Partnership are usually or customarily
rendered in connection with the rental of space of occupancy only, and therefore
that the provision of such services will not cause the rents received with
respect to the Properties to fail to qualify as rents from real property for
purposes of the 75% and 95% tests. The Company does not intend to rent to
related party tenants or to charge rents that would not qualify as rents from
real property because the rents are based on the income or profits of any person
(other than rents that are based on a fixed percentage or percentages of
receipts or sales).
 
     The 95% Test.  In addition to deriving 75% of its gross income from the
sources listed above, at least 95% of the Company's gross income for the taxable
year must be derived from the above-described qualifying income, or from
dividends, interest or gains from the sale or disposition of stock or other
securities that are not dealer property. Dividends and interest on any
obligation not collateralized by an interest on real property are included for
purposes of the 95% test, but not for purposes of the 75% test. For purposes of
determining whether the Company complies with the 75% and 95% tests, gross
income does not include income from prohibited transactions. A "prohibited
transaction" is a sale of dealer property, excluding certain property held by
the Company for at least four years and foreclosure property. See "-- Taxation
of the Company" and "-- Tax Aspects of the Company's Investment in the Operating
Partnership -- Sale of the Properties."
 
     The Company believes that it and the Operating Partnership has held and
managed the Properties in a manner that has given rise to rental income
qualifying under the 75% and 95% tests. Gains on sales of the Properties will
generally qualify under the 75% and 95% tests.
 
     Even if the Company fails to satisfy one or both of the 75% or 95% tests
for any taxable year, it may still qualify as a REIT for such year if it is
entitled to relief under certain provisions of the Code. These relief provisions
will generally be available if: (i) the Company's failure to comply was due to
reasonable cause and not to willful neglect; (ii) the Company reports the nature
and amount of each item of its income included in the 75% and 95% tests on a
schedule attached to its tax return; and (iii) any incorrect information on this
schedule is not due to fraud with intent to evade tax. It is not possible,
however, to state whether in all circumstances the Company would be entitled to
the benefit of these relief provisions. If these relief provisions apply, the
Company will, however, still be subject to a special tax upon the greater of the
amount by which it fails either the 75% or 95% test for that year.
 
                                       32
<PAGE>   45
 
     The 30% Test.  The Company must derive less than 30% of its gross income
for each taxable year from the sale or other disposition of (i) real property
held for less than four years (other than foreclosure property and involuntary
conversions), (ii) stock or securities held for less than one year, and (iii)
property in a prohibited transaction. The Company does not anticipate that it
will have any substantial difficulty in complying with this test. The 30% test
has been repealed, effective for tax years beginning after December 31, 1997.
 
  ANNUAL DISTRIBUTION REQUIREMENTS
 
     The Company, in order to qualify as a REIT, is required to distribute
dividends (other than capital gain dividends) to its stockholders each year in
an amount at least equal to (A) the sum of (i) 95% of the Company's REIT taxable
income (computed without regard to the dividends paid deduction and the REIT's
net capital gain) and (ii) 95% of the net income (after tax), if any, from
foreclosure property, minus (B) the sum of certain items of non-cash income.
Such distributions must be paid in the taxable year to which they relate, or in
the following taxable year if declared before the Company timely files its tax
return for such year and if paid on or before the first regular dividend payment
after such declaration. To the extent that the Company does not distribute all
of its net capital gain or distributes at least 95%, but less than 100%, of its
REIT taxable income, as adjusted, it will be subject to tax on the undistributed
amount at regular capital gains or ordinary corporate tax rates, as the case may
be. (However, beginning in 1998, a REIT can elect to "pass through" any of its
taxes paid on its undistributed net capital gains income to its stockholders on
a pro rata basis.) Furthermore, if the REIT should fail to distribute during
each calendar year at least the sum of (i) 85% of its ordinary income for such
year, (ii) 95% of its net capital gain income for such year, and (iii) any
undistributed taxable income from prior periods, the REIT would be subject to a
4% excise tax on the excess of such required distribution over the amounts
actually distributed.
 
     The Company believes that it has made timely distributions sufficient to
satisfy the annual distribution requirements. In this regard, the partnership
agreement of the Operating Partnership authorizes the Company, as general
partner, to take such steps as may be necessary to cause the Operating
Partnership to distribute to its partners an amount sufficient to permit the
Company to meet these distribution requirements. It is possible that in the
future the Company may not have sufficient cash or other liquid assets to meet
the 95% distribution requirement, due to timing differences between the actual
receipt of income and actual payment of expenses on the one hand, and the
inclusion of such income and deduction of such expenses in computing the
Company's REIT taxable income on the other hand. Further, as described below, it
is possible that, from time to time, the Company may be allocated a share of net
capital gain attributable to the sale of depreciated property that exceeds its
allocable share of cash attributable to that sale. To avoid any problem with the
95% distribution requirement, the Company will closely monitor the relationship
between its REIT taxable income and cash flow and, if necessary, will borrow
funds (or cause the Operating Partnership or other affiliates to borrow funds)
in order to satisfy the distribution requirement. The Company (through the
Operating Partnership) may be required to borrow funds at times when market
conditions are not favorable.
 
     If the Company fails to meet the 95% distribution requirement as a result
of an adjustment to the Company's tax return by the IRS, the Company may
retroactively cure the failure by paying a "deficiency dividend" (plus
applicable penalties and interest) within a specified period.
 
  FAILURE TO QUALIFY
 
     If the Company fails to qualify for taxation as a REIT in any taxable year
and the relief provisions do not apply, the Company will be subject to tax
(including any applicable alternative minimum tax) on its taxable income at
regular corporate rates. Distributions to stockholders in any year in which the
Company fails to qualify will not be deductible by the Company, nor will they be
required to be made. In such event, to the extent of the Company's current and
accumulated earnings and profits, all distributions to stockholders will be
taxable as ordinary income, and, subject to certain limitations in the Code,
corporate distributees may be eligible for the dividends received deduction.
Unless entitled to relief under specific
 
                                       33
<PAGE>   46
 
statutory provisions, the Company also will be disqualified from taxation as a
REIT for the four taxable years following the year during which qualification
was lost. It is not possible to state whether the Company would be entitled to
such statutory relief.
 
TAX ASPECTS OF THE COMPANY'S INVESTMENT IN THE OPERATING PARTNERSHIP
 
     The following discussion summarizes certain federal income tax
considerations applicable solely to the Company's investment in the Operating
Partnership. The discussion does not cover state or local tax laws or any
federal tax laws other than income tax laws.
 
  GENERAL
 
     The Company holds a direct ownership interest in the Operating Partnership.
In general, partnerships are "pass-through" entities which are not subject to
federal income tax. Rather, partners are allocated their proportionate shares of
the items of income, gain, loss, deduction and credit of a partnership, and are
potentially subject to tax thereon, without regard to whether the partners
receive a distribution from the partnership. The Company includes its
proportionate share of the foregoing Operating Partnership items for purposes of
the various REIT income tests and in the computation of its REIT taxable income.
See "-- Taxation of the Company" and "-- Requirements for Qualification -- Gross
Income Tests." Any resultant increase in the Company's REIT taxable income
increases its distribution requirements (see "-- Requirements for
Qualification -- Annual Distribution Requirements"), but is not subject to
federal income tax in the hands of the Company provided that such income is
distributed by the Company to its stockholders. Moreover, for purposes of the
REIT asset tests (see "-- Requirements for Qualification -- Asset Tests"), the
Company includes its proportionate share of assets held by the Operating
Partnership.
 
  TAX ALLOCATIONS WITH RESPECT TO THE PROPERTIES
 
     Pursuant to Section 704(c) of the Code, income, gain, loss and deduction
attributable to appreciated or depreciated property that is contributed to a
partnership in exchange for an interest in the partnership (such as certain of
the Properties), must be allocated in a manner such that the contributing
partner is charged with, or benefits from, respectively, the unrealized gain or
unrealized loss associated with the property at the time of the contribution.
The amount of such unrealized gain or unrealized loss is generally equal to the
difference between the fair market value of contributed property at the time of
contribution, and the adjusted tax basis of such property at the time of
contribution (a "Book-Tax Difference"). Such allocations are solely for federal
income tax purposes and do not affect the book capital accounts or other
economic or legal arrangements among the partners. The Operating Partnership was
initially formed by way of contributions of appreciated property (including
certain of the Properties). Consequently, the partnership agreement of the
Operating Partnership requires such allocations to be made in a manner
consistent with Section 704(c) of the Code.
 
     In general, the limited partners of the Operating Partnership will be
allocated lower amounts of depreciation deductions for tax purposes and
increased taxable income and gain on sale by the Operating Partnership of the
contributed assets (including certain of the Properties). This will tend to
eliminate the Book-Tax Difference over the life of the Operating Partnership.
However, the special allocation rules under Section 704(c) of the Code do not
always entirely rectify the Book-Tax Difference on an annual basis or with
respect to a specific taxable transaction such as a sale. Thus, the carryover
basis of the contributed assets in the hands of the Operating Partnership may
cause the company to be allocated lower depreciation and other deductions, and
possibly greater amounts of taxable income in the event of a sale of such
contributed assets in excess of the economic or book income allocated to it as a
result of such sale. This may cause the Company to recognize taxable income in
excess of cash proceeds, which might adversely affect the Company's ability to
comply with the REIT distribution requirements. See "-- Requirements for
Qualification -- Annual Distribution Requirements." In addition, the application
of Section 704(c) of the Code to the Operating Partnership is not entirely clear
and may be affected by authority that may be promulgated in the future.
 
                                       34
<PAGE>   47
 
  SALE OF THE PROPERTIES
 
     Generally, any gain realized by the Operating Partnership on the sale of
property held by the Operating Partnership will be capital gain, except for any
portion of such gain that is treated as certain depreciation or cost recovery
recapture. The Company's share of any gain realized by the Operating Partnership
on the sale of any dealer property generally will be treated as income from a
prohibited transaction that is subject to a 100% penalty tax. See "Taxation of
the Company" and "-- Requirements for Qualification -- Gross Income Tests -- The
95% Test." Under existing law, whether property is dealer property is a question
of fact that depends on all the facts and circumstances with respect to the
particular transaction. The Operating Partnership intends to hold the Properties
for investment with a view to long-term appreciation, to engage in the business
of acquiring, developing, owning and operating the Properties, and to make such
occasional sales of the Properties as are consistent with the Company's
investment objectives. Based upon such investment objectives, the Company
believes that in general the Properties should not be considered dealer property
and that the amount of income from prohibited transactions, if any, will not be
material.
 
TAXATION OF STOCKHOLDERS
 
  TAXATION OF TAXABLE DOMESTIC STOCKHOLDERS
 
     As long as the Company qualifies as a REIT, distributions made to the
Company's taxable domestic stockholders out of current or accumulated earnings
and profits (and not designated as capital gain dividends) will be taken into
account by them as ordinary income. Stockholders that are corporations will not
be entitled to a dividends received deduction. To the extent that the Company
makes distributions in excess of current and accumulated earnings and profits,
these distributions are treated first as a tax-free return of capital to the
stockholder, reducing the tax basis of a stockholder's Common Stock by the
amount of such distribution (but not below zero), with distributions in excess
of the stockholders tax basis taxable as capital gains (if the Common Stock is
held as a capital asset). In addition, any dividend declared by the Company in
October, November or December of any year and payable to a stockholder of record
on a specific date in any such month shall be treated as both paid by the
Company and received by the stockholder on December 31 of such year, provided
that the dividend is actually paid by the Company during January of the
following calendar year. Stockholders may not include in their individual income
tax returns any net operating losses or capital losses of the Company.
 
     In general, distributions which are designed by the Company as capital gain
dividends will be taxed to stockholders as gain from the sale of assets held for
greater than 1 year, or "long-term term capital gain," without regard to the
period for which a stockholder has held his stock upon which the capital gain
dividend is paid. However, corporate stockholders may be required to treat up to
20% of certain capital gain dividends as ordinary income.
 
     The Taxpayer Relief Act of 1997 (the "1997 Act") created several new
categories of capital gains applicable to noncorporate taxpayers. Under prior
law, noncorporate taxpayers were generally taxed at a maximum rate of 28% on net
capital gain (generally, the excess of net long-term capital gain over net
short-term capital loss). Noncorporate taxpayers are now generally taxed at a
maximum rate of 20% on net capital gain attributable to gains realized on the
sale of property held for greater than 18 months, and a maximum rate of 28% on
net capital gain attributable to gain realized on the sale of property held for
greater than 1 year and 18 months or less. In addition, a 25% rate now applies
to noncorporate taxpayers on certain gains realized on the sale of real
property. The 1997 Act retains the treatment of short-term capital gain and did
not affect the taxation of corporate taxpayers.
 
     The Treasury is authorized to issue regulations for application of the
reduced capital gains tax rates enacted under the 1997 Act to pass-through
entities, including REITs and partnerships (such as the Operating Partnership).
Noncorporate stockholders of the Company may therefore qualify for the reduced
rate of tax on capital gain dividends paid by the Company.
 
                                       35
<PAGE>   48
 
     Beginning in 1998, an election will be available under which a REIT may
retain its capital gains and pay tax thereon, and its stockholders will be
deemed to have received the capital gains and paid the tax. If the Company makes
this election, a stockholder will be deemed to have received his pro rata share
of the Company's capital gains and may claim a credit against his federal income
tax liability for his share of taxes paid by the Company on such gains.
 
     In general, any loss upon a sale or exchange of Common Stock by a
stockholder who has held such stock for six months or less (after applying
certain holding period rules) will be treated as a long-term capital loss, to
the extent of distributions from the Company required to be treated by such
stockholder as long-term capital gain.
 
  BACKUP WITHHOLDING
 
     The Company will report to its domestic stockholders and to the Service the
amount of dividends paid during each calendar year, and the amount of tax
withheld, if any, with respect thereto. Under the backup withholding rules, a
stockholder may be subject to backup withholding at the rate of 31% with respect
to dividends paid and redemption proceeds unless such stockholder (a) is a
corporation or comes within certain other exempt categories and, when required,
demonstrates this fact, or (b) provides a taxpayer identification number,
certifies as to no loss of exemption from backup withholding, and otherwise
complies with applicable requirements of the backup withholding rules. The
Company may nevertheless institute backup withholding with respect to a
stockholder if instructed to do so by the IRS. A stockholder that does not
provide the Company with its correct taxpayer identification number may also be
subject to penalties imposed by the IRS. Any amount paid as backup withholding
will be creditable against the stockholder's income tax liability.
 
TAXATION OF TAX-EXEMPT STOCKHOLDERS
 
     Based upon a published ruling by the IRS, distribution by the Company to a
stockholder that is a tax-exempt entity will not constitute "unrelated business
taxable income" ("UBTI") provided that the tax-exempt entity has not financed
the acquisition of its shares with "acquisition indebtedness" within the meaning
of the Code and the shares are not otherwise used in an unrelated trade or
business of the tax-exempt entity.
 
     Notwithstanding the preceding paragraph, however, a portion of the
dividends paid by the Company may be treated as UBTI to certain domestic private
pension trusts if the Company is treated as a "pension-held REIT." The Company
believes that it is not, and does not expect to become a "pension-held REIT." If
the Company were to become a pension-held REIT, these rules generally would only
apply to certain pension trusts that held more than 10% of the Company's stock.
 
TAXATION OF FOREIGN STOCKHOLDERS
 
     The following is a discussion of certain anticipated U.S. federal income
tax consequences of the ownership and disposition of the Company's stock
applicable to Non-U.S. Holders of such stock. A "Non-U.S. Holder" is any person
other than (i) a citizen or resident of the United States, (ii) a corporation or
partnership created or organized in the United States or under the laws of the
United States or of any state thereof, or (iii) an estate or trust whose income
is includable in gross income for U.S. federal income tax purposes regardless of
its source. The discussion is based on current law and is for general
information only. The discussion addresses only certain and not all aspects of
U.S. federal income taxation.
 
  DISTRIBUTIONS FROM THE COMPANY
 
     1.  Ordinary Dividends.  The portion of dividends received by Non-U.S.
Holders payable out of the Company's current and accumulated earnings and
profits which are not attributable to capital gains of the Company and which are
not effectively connected with a U.S. trade or business of the Non-U.S. Holder
will be subject to U.S. withholding tax at the rate of 30% (unless reduced by
treaty). In general,
 
                                       36
<PAGE>   49
 
Non-U.S. Holders will not be considered engaged in a U.S. trade or business
solely as a result of their ownership of stock of the Company. In cases where
the dividend income from a Non-U.S. Holder's investment in stock of the company
is (or is treated as) effectively connected with the Non-U.S. Holder's conduct
of a U.S. trade or business, the Non-U.S. Holder generally will be subject to
U.S. tax at graduated rates, in the same manner as U.S. stockholders are taxed
with respect to such dividends (and may also be subject to the 30% branch
profits tax in the case of a Non-U.S. Holder that is a foreign corporation).
 
     2.  Non-Dividend Distributions.  Unless the Company's stock constitutes a
USRPI (as defined below), distributions by the Company which are not paid out of
the current and accumulated earnings and profits of the company will not be
subject to U.S. income or withholding tax. If it cannot be determined at the
time a distribution is made whether or not such distribution will be in excess
of current and accumulated earnings and profits, the distribution will be
subject to withholding at the rate applicable to dividends. However, the
Non-U.S. Holder may seek a refund of such amounts from the Service if it is
subsequently determined that such distribution was, in fact, in excess of
current and accumulated earnings and profits of the Company. If the Company's
stock constitutes a USRPI, such distribution shall be subject to 10% withholding
tax and may be subject to additional taxation under FIRPTA (as defined below).
 
     3.  Capital Gain Dividends.  Under the Foreign Investment in Real Property
Tax Act of 1980 ("FIRPTA"), a distribution made by the Company to a Non-US.
Holder, to the extent attributable to gains ("USRPI Capital Gains") from
dispositions of United States Real Property Interests ("USRPIs"), which includes
the properties beneficially owned by the Company, will be considered effectively
connected with a U.S. trade or business of the Non-U.S. Holder and therefore
will be subject to U.S. income tax at the rate applicable to U.S. individuals or
corporations, without regard to whether such distribution is designated as a
capital gain dividend. In addition, the Company will be required to withhold tax
equal to 35% of the amount of dividends to the extent such dividends constitute
USRPI Capital Gains. Distributions subject to FIRPTA may also be subject to a
30% branch profits in tax in the hands of a foreign corporate stockholder that
is not entitled to treaty exemption.
 
     Disposition of Stock of the Company.  Unless the Company's stock
constitutes a USRPI, a sale of such stock by a Non-U.S. Holder generally will
not be subject to U.S. taxation under FIRPTA. The stock will not constitute a
USRPI if the Company is a "domestically controlled REIT." A domestically
controlled REIT is a REIT in which, at all times during a specified testing
period, less than 50% in value of its shares is held directly or indirectly by
Non-U.S. Holders. The Company believes that it is, and it expects to continue to
be a domestically controlled REIT, and therefore that the sale of the Company's
stock will not be subject to taxation under FIRPTA. Because the Company's stock
will be publicly traded, however, no assurance can be given the Company will
continue to be a domestically controlled REIT.
 
     If the Company does not constitute a domestically controlled REIT, a
Non-U.S. Holder's sale of stock generally will still not be subject to tax under
FIRPTA as a sale of a USRPI provided that (i) the stock is "regularly traded"
(as defined by applicable Treasury regulations) on an established securities
market and (ii) the selling Non-U.S. Holder held 5% or less of the Company's
outstanding stock at all times during a specified testing period.
 
     If gain on the sale of stock of the Company were subject to taxation under
FIRPTA, the Non-U.S. Holder would be subject to the same treatment as a U.S.
stockholder with respect to such gain (subject to applicable alternative minimum
tax and a special alternative minimum tax in the case of nonresident alien
individuals) and the purchaser of the stock could be required to withhold 10% of
the purchase price and remit such amount to the Service.
 
                                       37
<PAGE>   50
 
OTHER TAX CONSIDERATIONS
 
  DIVIDEND REINVESTMENT PROGRAM
 
     Under the Company's dividend reinvestment program, stockholders
participating in the program will be deemed to have received the gross amount of
any cash distributions which would have been paid by the Company to such
stockholders had they not elected to participate. These deemed distributions
will be treated as actual distributions from the Company to the participating
stockholders and will retain the character and tax effect applicable to
distributions from the Company generally. See "Federal Income Tax
Considerations -- Taxation of Stockholders." Participants in the dividend
reinvestment program are subject to federal income tax on the amount of the
deemed distributions to the extent that such distributions represent dividends
or gains, even though they receive no cash. Shares of Common Stock received
under the program will have a holding period beginning with the day after
purchase, and a tax basis equal to their cost (which is the gross amount of the
deemed distribution).
 
  STATE AND LOCAL TAXES
 
     The Company and its stockholders may be subject to state or local taxation
in various jurisdictions, including those in which it or they transact business
or reside. The state and local tax treatment of the Company and its stockholders
may not conform to the federal income tax consequences discussed above.
Consequently, prospective stockholders should consult their own tax advisers
regarding the effect of state and local tax laws on an investment in the Common
Stock of the Company.
 
                              PLAN OF DISTRIBUTION
 
     The Company and the Operating Partnership may sell the Offered Securities
to one or more underwriters for public offering and sale by them or may sell the
Offered Securities to investors directly or through agents, which agents may be
affiliated with the Company or the Operating Partnership. Any such underwriter
or agent involved in the offer and sale of the Offered Securities will be named
in the applicable Prospectus Supplement.
 
     Sales of Offered Securities offered pursuant to any applicable Prospectus
Supplement may be effected from time to time in one or more transactions at a
fixed price or prices which may be changed, at prices related to the prevailing
market prices at the time of sale, or at negotiated prices. The Company and the
Operating Partnership also may, from time to time, authorize underwriters acting
as the Company's agents to offer and sell the Offered Securities upon the terms
and conditions as set forth in the applicable Prospectus Supplement. In
connection with the sale of Offered Securities, underwriters may be deemed to
have received compensation from the Company or from the Operating Partnership in
the form of underwriting discounts or commissions and may also receive
commissions from purchasers of Offered Securities for whom they may act as
agent. Underwriters may sell Offered Securities to or through dealers, and such
dealers may receive compensation in the form of discounts, concessions or
commissions from the underwriters and/or commissions from the purchasers for
whom they may act as agent.
 
     Any underwriting compensation paid by the Company or the Operating
Partnership to underwriters or agents in connection with the offering of Offered
Securities, and any discounts, concessions or commissions allowed by
underwriters to participating dealers, will be set forth in the applicable
Prospectus Supplement. Underwriters, dealers and agents participating in the
distribution of the Offered Securities may be deemed to be underwriters, and any
discounts and commissions received by them and any profit realized by them on
resale of the Offered Securities may be deemed to be underwriting discounts and
commissions under the Securities Act. Underwriters, dealers and agents may be
entitled, under agreements entered into with the Company and the Operating
Partnership, to indemnification against and contribution toward certain civil
liabilities, including liabilities under the Securities Act. Any such
indemnification agreements will be described in the applicable Prospectus
Supplement.
 
     Unless otherwise specified in the related Prospectus Supplement, each
series of Offered Securities will be a new issue with no established trading
market, other than the Common Stock and Series B
 
                                       38
<PAGE>   51
 
Preferred Stock which are listed on the New York Stock Exchange. Any shares of
Common Stock and Series B Preferred Stock sold pursuant to a Prospectus
Supplement will be listed on such exchange, subject to official notice of
issuance. The Company or the Operating Partnership may elect to list any other
series of Preferred Stock and any series of Debt Securities, Depository Shares
or Warrants on any exchange, but neither is obligated to do so. It is possible
that one or more underwriters may make a market in a series of Offered
Securities, but will not be obligated to do so and may discontinue any market
making at any time without notice. Therefore, no assurance can be given as to
the liquidity of the trading market for the Offered Securities.
 
     If so indicated in the applicable Prospectus Supplement, the Company or the
Operating Partnership, as the case may be, may authorize dealers acting as the
Company's or the Operating Partnership's agents to solicit offers by certain
institutions to purchase Offered Securities from the Company or the Operating
Partnership at the public offering price set forth in such Prospectus Supplement
pursuant to Delayed Delivery Contracts ("Contracts") providing for payment and
delivery on the date or dates stated in such Prospectus Supplement. Each
Contract will be for an amount not less than, and the aggregate principal amount
of Offered Securities sold pursuant to Contracts shall be not less nor more
than, the respective amounts stated in the applicable Prospectus Supplement.
Institutions with whom Contracts, when authorized, may be made include
commercial and savings banks, insurance companies, pension funds, investment
companies, educational and charitable institutions, and other institutions but
will in all cases be subject to the approval of the Company or the Operating
Partnership, as the case may be. Contracts will not be subject to any conditions
except (i) the purchase by an institution of the Offered Securities covered by
its Contracts shall not at the time of delivery be prohibited under the laws of
any jurisdiction in the United States to which such institution is subject, and
(ii) if the Offered Securities are being sold to underwriters, the Company or
the Operating Partnership, as the case may be, shall have sold to such
underwriters the total principal amount of the Offered Securities less the
principal amount thereof covered by Contracts.
 
     Certain of the underwriters and their affiliates may be customers of,
engage in transactions with and perform services for, the Company or the
Operating Partnership in the ordinary course of business.
 
                                    EXPERTS
 
     The consolidated financial statements and related financial statement
schedules of the Company and the Operating Partnership included in the Company's
and the Operating Partnership's respective Annual Reports on Form 10-K for the
year ended December 31, 1996, incorporated by reference herein, and the reports
on the combined statements of revenues and certain expenses of the Pasadena
Portfolio, Metro Plaza and the Three Property Transactions, dated April 29,
1997, April 29, 1997, and December 20, 1996, respectively, included in the
Company's and the Operating Partnership's respective Current Reports on Form 8-K
each dated June 27, 1997, incorporated by reference herein, have been audited by
Arthur Andersen LLP, independent public accountants, to the extent and for the
periods indicated in their reports and have been incorporated herein in reliance
on such reports given on the authority of that firm as experts in accounting and
auditing.
 
                       VALIDITY OF THE OFFERED SECURITIES
 
     The validity of the Offered Securities will be passed upon for the Company
and the Operating Partnership by Sullivan & Cromwell, Los Angeles, California.
The description of the Company's qualification and taxation as a REIT under the
Code contained in this Prospectus under the caption entitled "Federal Income Tax
Considerations -- General" is based upon the opinion of Morrison & Foerster LLP.
 
                                       39
<PAGE>   52
 
======================================================
 
  NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS SUPPLEMENT AND THE
ACCOMPANYING PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED. THIS
PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS DOES NOT CONSTITUTE AN
OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN
THE SECURITIES TO WHICH IT RELATES OR AN OFFER TO SELL OR THE SOLICITATION OF AN
OFFER TO BUY SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR
SOLICITATION IS UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS SUPPLEMENT AND
THE ACCOMPANYING PROSPECTUS NOR ANY SALE MADE HEREUNDER SHALL, UNDER ANY
CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE
AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF OR THAT THE INFORMATION CONTAINED
HEREIN OR THEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.
 
                               ------------------
 
                               TABLE OF CONTENTS
 
                             PROSPECTUS SUPPLEMENT
 
<TABLE>
<CAPTION>
                                        PAGE
                                        ----
<S>                                     <C>
The Offering...........................  S-3
Concurrent Offering....................  S-4
Description of Series C Preferred
  Stock................................  S-5
Use of Proceeds........................  S-9
Certain Federal Income Tax
  Considerations....................... S-10
Underwriting........................... S-11
Validity of Series C Preferred Stock... S-12

               PROSPECTUS
Available Information..................    2
Incorporation of Certain Documents by
  Reference............................    2
The Company and the Operating
  Partnership..........................    4
Use of Proceeds........................    4
Ratio of Earnings to Fixed Charges.....    4
Special Considerations.................    6
Description of Debt Securities.........    8
Description of Capital Stock...........   18
Description of Preferred Stock.........   22
Description of Depositary Shares.......   24
Description of Warrants................   28
Certain Provisions of the Company's
  Charter and Bylaws...................   28
Federal Income Tax Considerations......   28
Plan of Distribution...................   38
Experts................................   39
Validity of the Offered Securities.....   39
</TABLE>
 
======================================================
======================================================
 
                                6,000,000 SHARES
 
                            SPIEKER PROPERTIES, INC.
 
                              SERIES C CUMULATIVE
                           REDEEMABLE PREFERRED STOCK
 
                               ------------------
 
                                 [SPIEKER LOGO]

                               ------------------
 
                              GOLDMAN, SACHS & CO.
 
                          DONALDSON, LUFKIN & JENRETTE
                            SECURITIES CORPORATION
 
                              MERRILL LYNCH & CO.
 
                           MORGAN STANLEY DEAN WITTER
 
                       PRUDENTIAL SECURITIES INCORPORATED
 
                      REPRESENTATIVES OF THE UNDERWRITERS

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