GABLES REALTY LIMITED PARTNERSHIP
424B2, 1998-10-07
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>
PROSPECTUS SUPPLEMENT
 
(TO PROSPECTUS DATED AUGUST 11, 1997)
 
                                                                     [LOGO]
                                  $15,000,000
 
                       GABLES REALTY LIMITED PARTNERSHIP
 
                          6.60% SENIOR NOTES DUE 2001
                               ------------------
 
    Gables is a real estate investment trust that owns institutional-quality
apartment communities across the Sunbelt region of the United States. We are
offering to the public 6.60% Senior Notes Due 2001 (the "Notes"). The terms of
the Notes can be summarized as follows:
 
    -  The Notes will mature on October 1, 2001
 
    -  We will pay interest at the rate of 6.60% per year from October 1, 1998
 
    -  We will make interest payments on the Notes semi-annually, on April 1 and
       October 1 of each year, beginning on April 1, 1999
 
    -  We are allowed to redeem the Notes at any time at our option, in whole or
       in part, by paying the holder the principal amount and all accrued
       interest to the date of redemption, plus a make-whole amount calculated
       as explained later in this Prospectus Supplement, if applicable
 
    -  The Notes are unsecured obligations of Gables Realty Limited Partnership
       and will rank equally with all of its other unsecured and unsubordinated
       indebtedness
 
    -  The Notes are not subject to any mandatory sinking fund or mandatory
       redemption and will not be convertible into any other securities of
       Gables
 
    - The Notes are not listed on any securities exchange
 
    INVESTING IN THE NOTES INVOLVES CERTAIN RISKS. SEE "ADDITIONAL RISK FACTORS"
BEGINNING ON PAGE S-5 OF THIS PROSPECTUS SUPPLEMENT AND "RISK FACTORS"
COMMENCING ON PAGE 4 OF THE ACCOMPANYING PROSPECTUS.
 
                             ---------------------
 
<TABLE>
<CAPTION>
                                                                            PER NOTE        TOTAL
                                                                           -----------  -------------
<S>                                                                        <C>          <C>
Public Price (1).........................................................     100.000%  $  15,000,000
Underwriting Discounts (2)...............................................       0.350%  $      52,500
Company Proceeds (1)(3)..................................................      99.650%  $  14,947,500
</TABLE>
 
(1) Plus accrued interest from October 1, 1998 to the date of delivery.
 
(2) We have agreed to indemnify the underwriter against certain liabilities,
    including liabilities under the Securities Act of 1933, as amended. See
    "Underwriting."
 
(3) Before deducting expenses payable by Gables estimated at $75,000.
 
                         ------------------------------
 
    NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING PROSPECTUS IS TRUTHFUL OR COMPLETE.
ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
    This offering is being underwritten by the underwriter on a firm commitment
basis, which means that it must purchase all of the Notes if any are purchased.
It is expected that delivery of the Notes will be made in book-entry form only
through the facilities of The Depository Trust Company ("DTC"), against payment
therefor in immediately available funds, on or about October 8, 1998.
 
                            ------------------------
 
                            PAINEWEBBER INCORPORATED
 
                               ------------------
 
           THE DATE OF THIS PROSPECTUS SUPPLEMENT IS OCTOBER 5, 1998.
<PAGE>
    Both Gables Realty Limited Partnership (the "Operating Partnership") and its
parent, Gables Residential Trust, a Maryland real estate investment trust
("Gables Residential Trust"), file annual, quarterly and special reports, proxy
statements and other information electronically with the SEC. You may read and
copy any of the reports, statements or other information that we file with the
SEC at the SEC's Public Reference Room at 450 Fifth Street, N.W., in Washington,
D.C. Please call the SEC at 1-800-SEC-0330 for further information on the Public
Reference Room. Our SEC filings are also available from the New York Stock
Exchange and from the Internet site maintained by the SEC at http://
www.sec.gov.
 
    This Prospectus Supplement and the accompanying Prospectus are part of a
registration statement we filed with the SEC to register the Notes. It does not
repeat important information that you can find in our registration statement or
in the reports and other documents that we file with the SEC. The SEC allows us
to "incorporate by reference" the information we file with them (our SEC file
number is 1-12590). This means that we can disclose important information to you
be referring you to other documents that are legally considered to be part of
this prospectus, and later information that we file with the SEC will
automatically update and supersede the information in this prospectus and the
documents listed below. We incorporate by reference the specific documents
listed below, the additional documents listed on page 2 of the accompanying
Prospectus, and any future filings made with the SEC under Section 13(a), 13(c),
14, or 15(d) of the Securities Exchange Act of 1934 until we sell all of the
Notes:
 
    - Annual Report on Form 10-K for the year ended December 31, 1997
 
    - Quarterly Reports on Form 10-Q for the quarters ended March 31, 1998 and
      June 30, 1998
 
    - Current Report on Form 8-K dated March 16, 1998
 
    - Current Report on Form 8-K dated March 23, 1998
 
    - Current Report on Form 8-K dated April 1, 1998 and all amendments thereto
 
    - Current Report on Form 8-K dated June 18, 1998
 
    You may request a copy of the documents incorporated by reference at no cost
by writing or telephoning us at the following address: Gables Residential Trust,
2859 Paces Ferry Road, Overlook III, Suite 1450, Atlanta, Georgia 30339,
attention: Chief Financial Officer (telephone number (770) 436-4600).
 
                                      S-2
<PAGE>
                         PROSPECTUS SUPPLEMENT SUMMARY
 
    THIS SUMMARY HIGHLIGHTS INFORMATION CONTAINED ELSEWHERE IN THIS PROSPECTUS
SUPPLEMENT. BECAUSE THIS IS A SUMMARY, IT MAY NOT CONTAIN ALL OF THE INFORMATION
THAT IS IMPORTANT TO YOU. YOU SHOULD READ THIS ENTIRE PROSPECTUS SUPPLEMENT AND
THE ACCOMPANYING PROSPECTUS CAREFULLY BEFORE DECIDING WHETHER TO INVEST IN THE
NOTES.
 
THE COMPANY
 
    We are one of the largest owners, operators, developers and acquirors of
multifamily apartment communities in the Sunbelt. We have a strategic focus on
the ownership of Class AA/A multifamily apartment communities that are situated
in in-fill locations or master-planned communities near major employment centers
in the Sunbelt.
 
    We currently own 82 multifamily apartment communities and an indirect 25%
interest in two multifamily apartment communities, containing a total of 24,594
apartment homes, which are located in the following major metropolitan markets
in Texas, Georgia, Florida and Tennessee:
 
    -    Houston
    -    Dallas
    -    Austin
    -    San Antonio
    -    Atlanta
    -    Boca Raton
    -    Orlando
    -    Memphis
    -    Nashville
 
    We are also constructing six multifamily apartment communities that are
expected to contain 1,999 apartment homes. In addition, we own sites on which we
intend to develop 15 additional communities that we currently expect will
contain approximately 4,450 apartment homes. We also have rights to acquire 7
additional development sites on which we believe we could develop communities
that we currently estimate may contain approximately 2,350 apartment homes. Any
future development is subject to permits and other governmental approvals, as
well as our ongoing business review, and may not be undertaken or completed.
 
    We either develop vacant land into new apartment communities or acquire
existing communities which we sometimes reposition or redevelop. In selecting
sites for development, redevelopment or acquisition, we focus on locations in
close proximity to expanding employment centers and convenient to recreation
areas, entertainment, shopping and dining. As a result, we believe that the
locations of the communities we currently own and the land parcels on which we
have the right to develop new communities are attractive to the type of
residents we seek.
 
    Gables Residential Trust elected to be taxed as a REIT for federal income
tax purposes and operates principally through the Operating Partnership. Gables
Residential Trust is currently a 79.6% economic owner of the Operating
Partnership, excluding its ownership of 100% of the Operating Partnership's
non-convertible preferred equity. Gables Residential Trust's common shares of
beneficial interest are listed on the NYSE under the symbol "GBP." The Notes
will be issued by the Operating Partnership and are not obligations of Gables
Residential Trust. The Notes will not be listed on the NYSE or any other
exchange.
 
    When we refer to "the Company" or "Gables" in this Prospectus Supplement we
mean collectively Gables Residential Trust, the Operating Partnership and their
subsidiaries, including their predecessor entities for the applicable periods,
considered as a single enterprise. Our executive offices are located at 2859
Paces Ferry Road in Atlanta, Georgia 30339 and our telephone number is (770)
436-4600.
 
                                      S-3
<PAGE>
TERMS OF THE 6.60% SENIOR NOTES DUE 2001
 
    The 6.60% Senior Notes Due 2001 have the following terms:
 
    -  $15 million aggregate principal amount
 
    -  6.60% interest coupon
 
    -  Maturity date of October 1, 2001
 
    -  Interest payable on April 1 and October 1 of each year, commencing April
1, 1999
 
    -  Redeemable at any time at the option of the Operating Partnership, in
whole or in part, at a redemption price equal to the principal and accrued
interest to the redemption date plus, if applicable, a make-whole amount
calculated as explained later in this Prospectus Supplement, if any. See
"Description of Notes--Optional Redemption."
 
RANKING
 
    The Notes will be senior unsecured obligations of the Operating Partnership
and will be:
 
    -  of equal rank with our other unsecured and unsubordinated debt, which as
of June 30, 1998 was approximately $404.2 million in the aggregate
 
    -  effectively subordinated to our secured indebtedness, which as of June
30, 1998 was $367.2 million in the aggregate
 
CERTAIN COVENANTS
 
    The indenture provisions governing the Notes are described in general under
the headings "Description of Notes" in this Prospectus Supplement and
"Description of Debt Securities" in the accompanying Prospectus. The Notes
contain, among others, the following covenants:
 
    -  We may not incur debt, other than intercompany debt, if, after giving
effect thereto, the aggregate principal amount of all of our outstanding debt on
a consolidated basis would be greater than 60% of the sum of (i) Adjusted Total
Assets (as defined later in this Prospectus Supplement) as of the end of the
most recent fiscal quarter prior to the incurrence of such additional debt, (ii)
the purchase price of any real estate assets or mortgages receivable (or
interests therein) acquired by us since the end of such fiscal quarter,
including those obtained in connection with the incurrence of such additional
debt and (iii) the amount of any securities offering proceeds received by us
since the end of such fiscal quarter (to the extent that such proceeds were not
used to acquire such real estate assets or mortgages receivable or used to
reduce debt)
 
    -  We may not incur debt, other than intercompany debt, if, after giving
effect thereto, the ratio of Consolidated Income Available for Debt Service to
the Annual Debt Service Charge (as defined later in this Prospectus Supplement)
for the four consecutive fiscal quarters most recently ended prior to the date
on which such additional debt is to be incurred would be less than 1.5:1, on a
pro forma basis after giving effect to certain assumptions
 
    -  We may not incur any secured debt if, after giving effect thereto, the
aggregate principal amount of all of our outstanding secured debt on a
consolidated basis would be greater than 40% of the sum of (i) Adjusted Total
Assets (as defined later in this Prospectus Supplement) as of the end of the
most recent fiscal quarter prior to the incurrence of such additional debt, (ii)
the purchase price of any real estate assets or mortgages receivable (or
interests therein) acquired by us since the end of such fiscal quarter,
including those obtained in connection with the incurrence of such additional
debt and (iii) the amount of any securities offering proceeds received by us
since the end of such fiscal quarter (to the extent that such proceeds were not
used to acquire such real estate assets or mortgages receivable or used to
reduce debt)
 
    -  We must at all times maintain an Unencumbered Total Asset Value (as
defined later in this Prospectus Supplement) in an amount not less than 150% of
the aggregate principal amount of all our outstanding unsecured debt on a
consolidated basis
 
    For a more complete description of the terms and definitions used in the
foregoing summary, see "Description of Notes--Certain Covenants."
 
USE OF PROCEEDS
 
    The net proceeds from this offering will be used to reduce borrowings under
our credit facilities.
 
                                      S-4
<PAGE>
                      RATIOS OF EARNINGS TO FIXED CHARGES
 
    The following table sets forth the consolidated ratios of earnings to fixed
charges of the Operating Partnership and the predecessor to the Operating
Partnership for the periods shown:
<TABLE>
<CAPTION>
                                               SIX MONTHS              YEARS ENDED
                                                  ENDED               DECEMBER 31,              JANUARY 26-      JANUARY 1-
                                                JUNE 30,     -------------------------------   DECEMBER 31,      JANUARY 25,
                                                  1998         1997       1996       1995          1994          1994(1)(2)
                                              -------------  ---------  ---------  ---------  ---------------  ---------------
<S>                                           <C>            <C>        <C>        <C>        <C>              <C>
Ratios......................................        1.65x        1.84x      1.83x      1.40x         1.83x             .89x
 
<CAPTION>
 
                                                YEAR ENDED
                                               DECEMBER 31,
                                                  1993(1)
                                              ---------------
<S>                                           <C>
Ratios......................................         1.22x
</TABLE>
 
- ------------------------
 
(1) Ratios for the period January 1 through January 25, 1994 and the year ended
    December 31, 1993 reflect periods prior to the recapitalization and initial
    public offering of the Company on January 26, 1994.
 
(2) The earnings for this period were inadequate to cover fixed charges by
    $146,000.
 
    The ratios of earnings to fixed charges were computed by dividing earnings
by fixed charges. For this purpose, earnings consist of net income (loss) before
gain on sale of real estate assets, loss on treasury lock extension and
extraordinary items, plus fixed charges. Fixed charges consist of interest
expense, capitalized interest, credit enhancement fees and loan cost
amortization.
 
                                      S-5
<PAGE>
                            ADDITIONAL RISK FACTORS
 
    AN INVESTMENT IN THE NOTES INVOLVES VARIOUS RISKS. IN ADDITION TO THE RISKS
DESCRIBED UNDER "RISK FACTORS" COMMENCING ON PAGE 4 IN THE ACCOMPANYING
PROSPECTUS, YOU SHOULD CAREFULLY CONSIDER THE FOLLOWING RISK FACTORS:
 
GABLES MAY FAIL TO INTEGRATE THE SIGNIFICANT NEW OPERATIONS AND ADDITIONAL
COMMUNITIES UNDER MANAGEMENT IT HAS ACQUIRED.
 
    Our recent acquisition of the properties and operations of Trammell Crow
Residential South Florida ("TCR-SF") (the "South Florida Transaction")
represents a significant increase in the size of our owned and managed
portfolio. Our ability to manage growth effectively will require us, among other
things, to successfully apply our experience in managing the existing portfolio
to a larger number of properties. In addition, we must successfully manage the
integration of a substantial number of new management and operations personnel.
While we believe that the affiliation of TCR-SF with Trammell Crow Residential
(with which our predecessors were also affiliated) makes the business and
personnel acquired in the South Florida Transaction compatible with our own
business and personnel, there can be no assurance that we will be able to
integrate and manage these operations effectively or maintain or improve our
historical financial performance.
 
GABLES MAY NOT SUCCEED IN THE NEW MARKETS IT HAS ENTERED.
 
    We have expanded our operations beyond our historic market areas into the
South Florida market and we may make other selected acquisitions outside of our
current market areas from time to time if appropriate opportunities arise. Our
historical experience in the Sunbelt does not ensure that we will be able to
operate successfully in the South Florida market or other market areas new to
Gables. While all of the TCR-SF personnel (approximately 400 people), including
all of the senior personnel associated with TCR-SF with an average of ten years
of experience in the South Florida market, have joined our organization, there
can be no assurance that we will not be exposed to the risks related to entry
into South Florida or other new markets, which include, among others: (i) a lack
of market knowledge and understanding of the local economies; (ii) an inability
to obtain land for development or to identify acquisition opportunities; (iii)
an inability to obtain construction tradespeople; and (iv) an unfamiliarity with
local governmental and permitting procedures.
 
                           FORWARD-LOOKING STATEMENTS
 
    Certain statements incorporated by reference or made in this Prospectus
Supplement under the captions "Prospectus Supplement Summary," "Additional Risk
Factors," and "The Company," in the accompanying Prospectus under the caption
"Risk Factors" and elsewhere in this prospectus are "forward-looking statements"
within the meaning of Section 27A of the Securities Act of 1933 and Section 21E
of the Securities Exchange Act of 1934. Such forward-looking statements include,
without limitation, statements and information concerning the acquisition,
construction, development, occupancy and completion of our apartment communities
and related cost estimates. When we use the words "anticipate," "assume,"
"believe," "estimate," "expect," "intend," and other similar expressions, they
are generally intended to identify forward-looking statements. You should not
rely on forward-looking statements since they involve known and unknown risks,
uncertainties and other factors which are, in some cases, beyond our control and
which could materially affect our actual results, performance or achievements.
Factors that could cause our actual results, performance or achievements to
differ materially from those expressed or implied by such forward-looking
statements include, but are not limited to, the following:
 
    - we may fail to secure or may abandon development opportunities
 
    - construction costs of a community may exceed original estimates
 
                                      S-6
<PAGE>
    - construction and lease-up may not be completed on schedule, resulting in
      increased debt service expense and construction costs, and reduced rental
      revenues
 
    - occupancy rates and market rents may be adversely affected by local
      economic and market conditions which are beyond our control
 
    - financing may not be available, or may not be available on favorable terms
 
    - our cash flow may be insufficient to meet required payments of principal
      and interest, and existing debt may mature in an unfavorable credit
      environment, preventing such debt from being refinanced, or, if
      refinanced, causing such refinancing to occur on terms that are not as
      favorable as the terms of existing debt
 
    - other factors specifically discussed under the headings "Additional Risk
      Factors" and "Risk Factors"
 
                                      S-7
<PAGE>
                                  THE COMPANY
 
GENERAL
 
    OVERVIEW.  Gables Residential Trust is one of the largest owners, operators,
developers and acquirors of multifamily apartment communities in the
Southwestern and Southeastern region of the United States (the "Sunbelt" or
"Sunbelt Region"). The Company has a strategic focus on the ownership of Class
AA/A multifamily apartment communities that are situated in in-fill locations or
master-planned communities near major employment centers in the Sunbelt.
Pursuant to this strategy, Gables currently owns 82 multifamily apartment
communities and has an indirect 25% interest in two multifamily apartment
communities (collectively, the "Current Communities") located in the following
major metropolitan markets in Texas, Georgia, Florida and Tennessee: Houston,
Dallas, Austin, San Antonio, Atlanta, Boca Raton, Orlando, Memphis and
Nashville. The Current Communities contain 24,594 apartment homes. The Company
also owns six multifamily apartment communities that are under construction and
are expected to contain 1,999 apartment homes (collectively, the "Development
Communities," and with the Current Communities, the "Communities").
 
    In addition, the Company owns sites (the "Undeveloped Sites") on which it
intends to develop 15 additional multifamily apartment communities that it
currently expects will contain approximately 4,450 apartment homes. The Company
also has rights (the "Development Rights") to acquire 7 additional sites on
which the Company believes it could develop multifamily apartment communities
currently estimated to comprise approximately 2,350 apartment homes. Development
of the Undeveloped Sites and the Development Rights is subject to permits and
other governmental approvals, as well as ongoing business review by the Company.
There can be no assurance that the Company will decide or be able to complete
development of all or any of the multifamily apartment communities planned for
the Undeveloped Sites, or pursue acquisition or development of the sites subject
to the Development Rights.
 
    In its efforts to increase cash flows and long-term shareholder value, the
Company actively seeks opportunities to acquire individual multifamily apartment
communities, sites for multifamily developments and portfolios of multifamily
apartment communities, which acquisitions may be material to the Company's
results of operations and financial condition. From time to time the Company
considers acquisitions and enters into negotiations concerning such potential
acquisitions. At any particular point in time, the Company may be actively
pursuing a variety of such opportunities, which pursuits may be in various
stages of advancement. There can be no assurance that the Company will proceed
with or successfully complete any such acquisitions currently under
consideration or negotiation.
 
    The Company operates as a real estate investment trust (a "REIT") under the
Internal Revenue Code (the "Code"). Substantially all of the Company's business
is conducted through, and all of the Company's interests in property are held by
or through, Gables Realty Limited Partnership, a Delaware limited partnership
(the "Operating Partnership"), of which the Company is a 79.6% economic owner
(excluding the Company's direct or indirect ownership of 100% of the Operating
Partnership's non-convertible preferred limited partnership units), and which
the Company controls through a wholly-owned subsidiary that is the sole general
partner of the Operating Partnership. See "Certain Federal Income Tax
Consequences" in this Prospectus Supplement and "Federal Income Tax
Considerations" in the accompanying Prospectus.
 
    Gables' executive offices are located at 2859 Paces Ferry Road, in Atlanta,
Georgia 30339 and its telephone number is (770) 436-4600. The Company's common
shares of beneficial interest ("Common Shares") are listed on the NYSE under the
symbol "GBP."
 
    MANAGEMENT STRUCTURE.  Gables has been responsible for the development or
acquisition of approximately 48,000 apartment homes since 1982 and its senior
management team has, on average, in excess of 15 years of experience in the
multifamily industry. Gables provides a full range of integrated real estate
 
                                      S-8
<PAGE>
services through a staff of approximately 1,300 employees who have experience in
property operations, development, acquisition and construction. Gables maintains
offices in Atlanta, Houston, Dallas and Boca Raton, each with its own fully
integrated organization, including experienced in-house management, development
and acquisition staffs with specific knowledge of the particular markets served.
Gables believes that its competitive strength and growth potential lie in
management's in-depth knowledge of the changing opportunities available in each
local market and in its locally focused management structure, which enables
highly experienced development and acquisition personnel to pursue new
opportunities in each market and highly experienced on-site managers to make the
day-to-day decisions needed to maximize the performance of existing properties.
The finance, accounting and administrative functions for Gables are controlled
by a central staff located in Atlanta.
 
    COMPETITIVE ADVANTAGES.  Gables believes that it has several competitive
advantages. These advantages include:
 
    - A FULLY INTEGRATED ORGANIZATION:  a fully integrated organization with a
      track record of approximately 15 years in all phases of real estate
      property management, development, acquisition, disposition, construction,
      rehabilitation, financing and marketing.
 
    - PRODUCT FOCUS:  a portfolio concentration of Class AA/A apartment
      communities that are targeted toward the lifestyle renter segment, are
      located primarily in in-fill locations and master-planned communities, and
      include garden, townhome and higher density apartment communities.
 
    - LOCAL PRESENCE IN MULTIPLE MARKETS:  an established local presence in each
      of its markets, which Gables serves through an experienced staff with
      superior knowledge of local markets and a culture which provides
      incentives for outstanding performance at all levels.
 
    - GEOGRAPHIC DIVERSIFICATION:  an established market presence in nine major
      markets in the Sunbelt Region that are geographically independent, rely on
      diverse economic foundations, and during the past several years have
      experienced job growth substantially above national averages.
 
    - SERVICE-ORIENTED PHILOSOPHY:  a service-oriented philosophy which focuses
      on offering extensive resident amenities and services in quality apartment
      homes to increase occupancy and rental rates and reduce resident turnover.
 
RECENT DEVELOPMENTS
 
    RECENT ACQUISITIONS -- SOUTH FLORIDA.  On April 1, 1998, the Company
acquired the properties and operations of TCR-SF, which consist of 15
multifamily apartment communities (the "South Florida Communities") containing
4,197 apartment homes, and all of TCR-SF's residential construction, development
and third-party management activities in South Florida. The South Florida
Communities are located in Palm Beach County, Broward County and Dade County and
encompass the metropolitan areas of Boca Raton, Fort Lauderdale and Miami,
respectively.
 
    The Company acquired the South Florida Communities, the third-party
management business and other properties and assets of TCR-SF for a total
purchase price of $368.3 million, paid as follows: (i) approximately $155.0
million in cash at closing, (ii) the assumption of approximately $135.9 million
of tax-exempt debt, (iii) the initial issuance of limited partnership units of
the Operating Partnership ("OP Units") valued at approximately $64.9 million,
and (iv) the issuance on January 1, 2000 of OP Units at a then current value of
$12.5 million.
 
    RECENT ACQUISITIONS -- HOUSTON.  In April 1998, the Company completed the
acquisition of four multifamily apartment communities (the "Greystone
Communities"), aggregating 913 apartment homes located in the Houston area. In
connection with this transaction, the Company assumed approximately $28.2
million of debt and issued OP Units valued at approximately $17.5 million.
 
                                      S-9
<PAGE>
    Three of the four properties, consisting of 654 apartments, are in the 9,700
acre First Colony master-planned community, which is southwest of Houston in
Sugarland, Texas. The addition of these properties to the Company's existing
presence in First Colony results in a total of six properties comprising 1,410
apartment homes. This total represents 84% of the multifamily product in First
Colony. The remaining Greystone Community consists of 259 apartment homes and is
located in Southeast Houston, in close proximity to the Company's 1,508
apartment homes in Clear Lake. The Company believes its dominant position in
First Colony, which is in the fastest growing area of Houston (based on
population and job growth), will result in continued economies of scale for
operating expenses and an enhanced ability to seek increases in rental rates.
 
    FINANCING ACTIVITIES.  In April 1998, the Operating Partnership issued
2,995,125 OP Units, valued at approximately $82.4 million, in connection with
the acquisition of TCR-SF and the Greystone Communities. In addition, the
Company assumed approximately $135.9 million of tax-exempt indebtedness in
connection with the acquisition of TCR-SF and approximately $28.2 million of
indebtedness in connection with the acquisition of the Greystone Communities.
 
    In May 1998, the Company increased its $175 million unsecured credit
facility to $225 million and increased its $20 million unsecured credit facility
to $25 million (collectively, the "Unsecured Credit Facilities"). Pricing on the
$225 million credit facility remained unchanged at LIBOR plus 80 basis points,
with a reduction to a spread of 67.5 basis points upon an upgrade of the
Company's senior unsecured notes to Baa1 or BBB+ from their current levels of
Baa2/BBB. Pricing on the $25 million credit facility is also LIBOR plus 80 basis
points.
 
    On June 18, 1998, Gables Residential Trust directly placed 3,310,800 Common
Shares with five institutional investors. Net proceeds were approximately $87.5
million and were used to pay down amounts borrowed under the Unsecured Credit
Facilities.
 
    On June 18, 1998, in connection with the purchase of land, Gables
Residential Trust issued $4.5 million of redeemable preferred shares with a
dividend yield of 5.0%. Such shares are subject to mandatory redemption on June
18, 2018.
 
    In the normal course of business, the Company seeks to hedge interest rate
risk related to future offerings of debt securities. On October 2, 1998, the
Company paid $5.5 million in cash to terminate a forward seven-year treasury
lock agreement for a notional amount of $50.0 million with J.P. Morgan
Securities Inc. Through June 30, 1998, the Company had recognized $1.9 million
of losses in connection with this agreement. The balance of the amount payable
upon termination of the agreement was recognized as a loss in the quarter ended
September 30, 1998.
 
    On October 5, 1998, the Operating Partnership issued $50 million principal
amount of its 6.55% Senior Notes Due 2000. Net proceeds were approximately $49.7
million and were used to pay down amounts borrowed under the Unsecured Credit
Facilities.
 
    DIVIDENDS.  On August 10, 1998, the Company declared a dividend of $0.51 per
share on its Common Shares payable on September 30, 1998 to shareholders of
record on September 18, 1998. This reflects a 2% increase over the previous
quarterly dividend of $0.50 per share. The dividend on the Common Shares is
equivalent to an annual rate of $2.04 per share. The Company also declared a
dividend of $0.51875 per share on its 8.30% Series A Cumulative Redeemable
Preferred Shares (the "Series A Preferred Shares") payable on September 15, 1998
to shareholders of record on September 1, 1998. The dividend on the Series A
Preferred Shares is equivalent to an annual rate of $2.075 per share.
 
                                      S-10
<PAGE>
                      RATIOS OF EARNINGS TO FIXED CHARGES
 
    The following table sets forth the consolidated ratios of earnings to fixed
charges of the Operating Partnership and the predecessor to the Operating
Partnership for the periods shown:
<TABLE>
<CAPTION>
                                               SIX MONTHS              YEARS ENDED
                                                  ENDED               DECEMBER 31,              JANUARY 26-      JANUARY 1-
                                                JUNE 30,     -------------------------------   DECEMBER 31,      JANUARY 25,
                                                  1998         1997       1996       1995          1994          1994(1)(2)
                                              -------------  ---------  ---------  ---------  ---------------  ---------------
<S>                                           <C>            <C>        <C>        <C>        <C>              <C>
Ratios......................................        1.65x        1.84x      1.83x      1.40x         1.83x             .89x
 
<CAPTION>
 
                                                YEAR ENDED
                                               DECEMBER 31,
                                                  1993(1)
                                              ---------------
<S>                                           <C>
Ratios......................................         1.22x
</TABLE>
 
- ------------------------
 
(1) Ratios for the period January 1 through January 25, 1994 and the year ended
    December 31, 1993 reflect periods prior to the recapitalization and initial
    public offering of the Company on January 26, 1994.
 
(2) The earnings for this period were inadequate to cover fixed charges by
    $146,000.
 
    The ratios of earnings to fixed charges were computed by dividing earnings
by fixed charges. For this purpose, earnings consist of net income (loss) before
gain on sale of real estate assets, loss on treasury lock extension and
extraordinary items, plus fixed charges. Fixed charges consist of interest
expense, capitalized interest, credit enhancement fees and loan cost
amortization.
 
                         RATIOS OF EARNINGS TO COMBINED
                     FIXED CHARGES AND PREFERRED DIVIDENDS
 
    The following table sets forth the consolidated ratios of earnings to
combined fixed charges and preferred dividends of the Operating Partnership and
the predecessor to the Operating Partnership for the periods shown:
<TABLE>
<CAPTION>
                                               SIX MONTHS              YEARS ENDED
                                                  ENDED               DECEMBER 31,              JANUARY 26-      JANUARY 1-
                                                JUNE 30,     -------------------------------   DECEMBER 31,      JANUARY 25,
                                                  1998         1997       1996       1995          1994          1994(1)(2)
                                              -------------  ---------  ---------  ---------  ---------------  ---------------
<S>                                           <C>            <C>        <C>        <C>        <C>              <C>
Ratios......................................        1.53x        1.74x      1.83x      1.40x         1.83x             .89x
 
<CAPTION>
 
                                                YEAR ENDED
                                               DECEMBER 31,
                                                  1993(1)
                                              ---------------
<S>                                           <C>
Ratios......................................         1.22x
</TABLE>
 
- ------------------------
 
(1) Ratios for the period January 1 through January 25, 1994 and the year ended
    December 31, 1993 reflect periods prior to the recapitalization and initial
    public offering of the Company on January 26, 1994.
 
(2) The earnings for this period were inadequate to cover fixed charges by
    $146,000.
 
    The ratio of earnings to combined fixed charges and preferred dividends was
computed by dividing earnings by the aggregate of fixed charges and preferred
dividends. For this purpose, earnings consist of net income (loss) before gain
on sale of real estate assets, loss on treasury lock extension and extraordinary
items, plus fixed charges and preferred dividends. Fixed charges consist of
interest expense, capitalized interest, credit enhancement fees and loan cost
amortization.
 
                                      S-11
<PAGE>
                                USE OF PROCEEDS
 
    We estimate that we will receive net proceeds from this offering of
approximately $14.9 million after all anticipated issuance costs. We will use
such net proceeds to reduce borrowings under our Unsecured Credit Facilities. In
the ordinary course of business, we borrow under the Unsecured Credit Facilities
to fund acquisitions and developments. The $225 million Unsecured Credit
Facility currently bears interest at a weighted average rate of 6.1% per annum
and matures in May, 2001 and the $25 million Unsecured Credit Facility currently
bears interest at a rate of 6.2% per annum and matures in October, 1999.
 
                                 CAPITALIZATION
 
    The following table sets forth the capitalization of the Operating
Partnership on a pro forma basis as of June 30, 1998 after giving effect to the
sale of the 6.55% Senior Notes Due 2000 and as adjusted to give effect to the
sale of the Notes at their face value and the application of the assumed net
proceeds therefrom, as if such events had occurred on June 30, 1998. See "Use of
Proceeds." The information set forth in the table below should be read in
conjunction with the Consolidated Financial Statements and the notes thereto
incorporated by reference in the accompanying Prospectus.
<TABLE>
<CAPTION>
                                                                                              JUNE 30, 1998
                                                                                        --------------------------
<S>                                                                                     <C>           <C>
                                                                                         PRO FORMA    AS ADJUSTED
                                                                                        ------------  ------------
 
<CAPTION>
                                                                                          (DOLLARS IN THOUSANDS)
<S>                                                                                     <C>           <C>
DEBT:
  Notes Payable.......................................................................  $    284,600  $    284,600
  Tax-Exempt Debt.....................................................................       240,800       240,800
  Unsecured Credit Facilities.........................................................        96,338        81,466
  6.80% Notes due 2005................................................................       100,000       100,000
  6.55% Notes due 2000................................................................        50,000        50,000
  6.60% Notes due 2001................................................................            --        15,000
                                                                                        ------------  ------------
      Total Debt......................................................................       771,738       771,866
                                                                                        ------------  ------------
Limited Partners' Capital Interest (7,047,703 Common OP Units), at redemption value...       190,817       190,817
                                                                                        ------------  ------------
Preferred Partners' Capital Interest (180,000 Series Z Preferred OP Units), at $25.00
  liquidation preference..............................................................         4,500         4,500
                                                                                        ------------  ------------
PARTNERS' CAPITAL:
  Preferred Partners (4,600,000 Series A Preferred OP Units), at $25.00 liquidation
    preference........................................................................       115,000       115,000
  General Partner (325,141 Common OP Units)...........................................         5,510         5,510
  Limited Partner (25,141,252 Common OP Units)........................................       362,207       362,207
                                                                                        ------------  ------------
      Total Partners' Capital.........................................................       482,717       482,717
                                                                                        ------------  ------------
      Total Capitalization............................................................  $  1,449,772  $  1,449,900
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>
 
                                      S-12
<PAGE>
                              DESCRIPTION OF NOTES
 
    THE FOLLOWING DESCRIPTION OF THE PARTICULAR TERMS OF THE NOTES OFFERED
HEREBY SUPPLEMENTS, AND TO THE EXTENT INCONSISTENT THEREWITH REPLACES, THE
DESCRIPTION OF THE GENERAL TERMS AND PROVISIONS OF THE "SENIOR SECURITIES" SET
FORTH UNDER "DESCRIPTION OF DEBT SECURITIES" IN THE ACCOMPANYING PROSPECTUS, TO
WHICH REFERENCE IS HEREBY MADE.
 
GENERAL
 
    The Notes constitute a separate series of Senior Securities (which are more
fully described in the accompanying Prospectus) to be issued under an Indenture,
dated as of March 23, 1998 (the "Original Indenture"), as supplemented by
Supplemental Indenture No. 1, dated as of March 23, 1998, Supplemental Indenture
No. 2, dated as of September 30, 1998, and Supplemental Indenture No. 3, dated
as of October 8, 1998 (the "Supplemental Indentures" and together with the
Original Indenture, the "Indenture") between the Operating Partnership and First
Union National Bank (the "Trustee"). The Original Indenture has been filed as an
exhibit to the Registration Statement of which this Prospectus Supplement is a
part and is available for inspection at the offices of the Operating
Partnership. The Indenture is subject to, and governed by, the Trust Indenture
Act of 1939, as amended (the "TIA"). The statements made hereunder relating to
the Indenture and the Notes are summaries of certain provisions thereof, 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 the Notes. All capitalized
terms used but not defined herein shall have the respective meanings set forth
in the Indenture.
 
    The Notes will be limited to an aggregate principal amount of $15.0 million
and will be direct, senior unsecured recourse obligations of the Operating
Partnership and will rank equally with all other unsecured and unsubordinated
indebtedness of the Operating Partnership from time to time outstanding,
including indebtedness outstanding from time to time under the Operating
Partnership's Unsecured Credit Facilities. The Notes will be effectively
subordinated to the claims of mortgage lenders and others holding secured
indebtedness of the Operating Partnership and of any Subsidiaries (as defined
below) now existing or that may be formed by the Operating Partnership in the
future as to the specific properties securing such indebtedness. As of June 30,
1998, the total amount of secured indebtedness of the Operating Partnership and
its Subsidiaries was $367.2 million. In addition, the Notes will be effectively
subordinated to unsecured indebtedness and other liabilities of any Subsidiaries
now existing or that may be formed by the Operating Partnership in the future.
As of June 30, 1998, the Subsidiaries did not have any such unsecured
indebtedness. All such secured indebtedness or unsecured indebtedness of
Subsidiaries will have to be satisfied in full before holders of the Notes will
be able to realize any value from encumbered or indirectly-held properties. The
Notes will be recourse to all of the assets of the Operating Partnership, but
will be non-recourse to any general partner or limited partner of the Operating
Partnership, including Gables Residential Trust, for the repayment of the Notes.
 
    As of June 30, 1998, on a pro forma basis after giving effect to the
issuance and sale on October 5, 1998 of the 6.55% Senior Notes Due 2000 and of
the Notes offered hereby and the application of the proceeds therefrom, the
total outstanding indebtedness of the Operating Partnership and its Subsidiaries
would have been approximately $771.9 million, of which approximately $367.2
million in the aggregate would have been secured indebtedness and none would
have been unsecured indebtedness of Subsidiaries. The outstanding principal
balance under the Unsecured Credit Facilities varies from time to time and as of
June 30, 1998 was in the aggregate approximately $146.0 million.
 
    The Notes will be represented by a single fully registered global note in
book-entry form without coupons (a "Global Note") registered in the name of The
Depository Trust Company ("DTC") or its nominee. Beneficial interests in the
Global Note will be shown on, and transfers thereof will be effected only
through, records maintained by DTC (with respect to beneficial interests of
participants) or by participants or persons that hold interests through
participants (with respect to beneficial interests of beneficial owners). Owners
of beneficial interests in the Global Note will be entitled to physicial
delivery of
 
                                      S-13
<PAGE>
Notes in certificated form equal in principal amount to their respective
beneficial interests only under limited circumstances. See "--Book-Entry
System." Settlement of the Notes will be made in immediately available funds.
The Notes will trade in DTC's Same-Day Funds Settlement System until maturity or
earlier redemption, as the case may be, or until the Notes are issued in
certificated form, and secondary market trading activity in the Notes will
therefore settle in immediately available funds. All payments of principal and
interest in respect of the Notes will be made by the Operating Partnership in
immediately available funds. See "--Same-day Settlement and Payment."
 
    Except as described below under "Certain Covenants--Limitations on
Incurrence of Debt" and under "--Merger, Consolidation or Sale of Assets," 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 the
Notes protection in the event of: (i) a highly leveraged or similar transaction
involving the Operating Partnership or Gables Residential Trust or any affiliate
of either such party; (ii) a change of control; or (iii) a reorganization,
restructuring, merger or similar transaction involving the Operating Partnership
that may adversely affect the holders of the Notes. However, certain
restrictions on the ownership and transfer of the Common Shares designed to
preserve Gables Residential Trust's status as a REIT may act to prevent or
hinder a change of control. The Operating Partnership and its management have no
present intention of engaging in a transaction which would result in the
Operating Partnership's being highly leveraged or that would result in a change
of control.
 
PRINCIPAL AND INTEREST
 
    The Notes will mature on October 1, 2001 and will bear interest at 6.60% per
annum from October 1, 1998 or from the immediately preceding Interest Payment
Date (as defined below) to which interest has been paid, payable semi-annually
in arrears on April 1 and October 1 of each year, commencing April 1, 1999
(each, an "Interest Payment Date"), to the persons (the "Holders") in whose name
the applicable Notes are registered in the Security Register at the close of
business 15 calendar days prior to such Interest Payment Date, I.E., March 15
and September 15, respectively (regardless of whether such day is a Business
Day, as defined below), as the case may be (each, a "Regular Record Date").
Interest on the Notes will be computed on the basis of a 360-day year of twelve
30-day months.
 
    Any interest not punctually paid or duly provided for on any Interest
Payment Date with respect to a Note ("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 Note 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 Note not less than ten days prior to such Special
Record Date, or may be paid at any time in any other lawful manner, as more
particularly described in the Indenture.
 
    If any Interest Payment Date or Maturity falls on a day that is not a
Business Day, the required payment shall be on the next Business Day as if it
were made on the date such payment was due and no interest shall accrue on the
amount so payable for the period from and after such Interest Payment Date or
Maturity, as the case may be. "Business Day" means any day, other than a
Saturday or Sunday, that is neither a legal holiday nor a day on which banking
institutions in the City of New York are required or authorized by law,
regulation or executive order to close.
 
    The principal of (and premium or Make-Whole Amount, if any) and interest on
the Notes will be payable at the corporate trust office of the agent of the
Trustee in the City of Atlanta, Georgia, initially located at 999 Peachtree
Street, N.E., in such coin or currency of the United States of America as at the
time of payment is legal tender for payment of public and private debt, provided
that, at the option of the Operating Partnership, 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.
 
                                      S-14
<PAGE>
    The Notes will not be subject to any sinking fund provisions and will not be
convertible into or exchangeable for any equity interest in the Operating
Partnership or Gables Residential Trust.
 
CERTAIN COVENANTS
 
    LIMITATIONS ON INCURRENCE OF DEBT.
 
    The Operating Partnership will not, and will not permit any Subsidiary to,
incur any Debt (as defined below), other than intercompany Debt (representing
Debt to which the only parties are the Company, any of its Subsidiaries, the
Operating Partnership or the Management Companies (as defined below), but only
so long as such Debt is held solely by any of the foregoing), if, immediately
after giving effect to the incurrence of such additional Debt and the
application of the proceeds thereof, the aggregate principal amount of all
outstanding Debt of the Operating Partnership and its Subsidiaries on a
consolidated basis determined in accordance with generally accepted accounting
principles ("GAAP") is greater than 60% of the sum of (without duplication) (i)
the Operating Partnership's Adjusted Total Assets (as defined below) as of the
end of the calendar quarter covered in the Operating Partnership's Annual Report
on Form 10-K or Quarterly Report on Form 10-Q, as the case may be, most recently
filed with the Securities and Exchange Commission (or, if such filing is not
permitted under the Securities Exchange Act of 1934, as amended, filed with the
Trustee) prior to the incurrence of such additional Debt, (ii) the purchase
price of any real estate assets or mortgages receivable (or interests therein)
acquired by the Operating Partnership or any Subsidiary since the end of such
calendar quarter, including those obtained in connection with the incurrence of
such additional Debt and (iii) the amount of any securities offering proceeds
received by the Operating Partnership or any Subsidiary since the end of such
calendar quarter (to the extent that such proceeds were not used to acquire such
real estate assets or mortgages receivable or used to reduce Debt).
 
    The Operating Partnership will not, and will not permit any Subsidiary to,
incur any Debt, other than intercompany Debt, if the ratio of Consolidated
Income Available for Debt Service (as defined below) to the Annual Debt Service
Charge (as defined below) for the four consecutive fiscal quarters most recently
ended prior to the date on which such additional Debt is to be incurred shall
have been less than 1.5:1, on a pro forma basis after giving effect to the
incurrence of such Debt and to the application of the proceeds therefrom, and
calculated on the assumption that (i) such Debt and any other Debt incurred by
the Operating Partnership and its Subsidiaries since the first day of such
four-quarter period and the application of the proceeds therefrom, including to
refinance other Debt, had occurred at the beginning of such period; (ii) the
repayment or retirement of any other Debt by the Operating Partnership and its
Subsidiaries since the first day of such four-quarter period had been repaid or
retired at the beginning of such period (except that, in making such
computation, the amount of Debt under any revolving credit facility shall be
computed based upon the average daily balance of such Debt during such period);
(iii) in the case of Acquired Debt (as defined below) or Debt incurred in
connection with any acquisition since the first day of such four-quarter period,
the related acquisition had occurred as of the first day of such period with the
appropriate adjustments with respect to such acquisition being included in such
pro forma calculation; and (iv) in the case of any acquisition or disposition by
the Operating Partnership or its Subsidiaries of any asset or group of assets
since the first day of such four-quarter period, whether by merger, stock
purchase or sale, or asset purchase or sale, such acquisition or disposition or
any related repayment of Debt had occurred as of the first day of such period
with the appropriate adjustments with respect to such acquisition or disposition
being included in such pro forma calculation.
 
    The Operating Partnership will not, and will not permit any Subsidiary to,
incur any Debt secured by any mortgage, lien, charge, pledge, encumbrance or
security interest of any kind upon any of the property of the Operating
Partnership or any Subsidiary ("Secured Debt"), whether owned at the date of the
Indenture or thereafter acquired, if, immediately after giving effect to the
incurrence of such Secured Debt and the application of the proceeds therefrom,
the aggregate principal amount of all outstanding Secured Debt of the Operating
Partnership and its Subsidiaries on a consolidated basis is greater than 40% of
the sum of (without duplication) (i) the Operating Partnership's Adjusted Total
Assets as of the end of the
 
                                      S-15
<PAGE>
calendar quarter covered in the Operating Partnership's Annual Report on Form
10-K or Quarterly Report on Form 10-Q, as the case may be, most recently filed
with the Securities and Exchange Commission (or, if such filing is not permitted
under the Securities Exchange Act of 1934, as amended, filed with the Trustee)
prior to the incurrence of such additional Debt, (ii) the purchase price of any
real estate assets or mortgages receivable (or interests therein) acquired by
the Operating Partnership or any Subsidiary since the end of such calendar
quarter, including those obtained in connection with the incurrence of such
additional Debt and (iii) the amount of any securities offering proceeds
received by the Operating Partnership or any Subsidiary since the end of such
calendar quarter (to the extent that such proceeds were not used to acquire such
real estate assets or mortgages receivable or used to reduce Debt).
 
    The Operating Partnership will at all times maintain an Unencumbered Total
Asset Value (as defined below) in an amount not less than 150% of the aggregate
principal amount of all outstanding unsecured Debt of the Operating Partnership
and its Subsidiaries on a consolidated basis.
 
    As used herein, and in the Indenture:
 
    "ACQUIRED DEBT" means Debt of a Person (i) existing at the time such Person
becomes a Subsidiary or (ii) assumed in connection with the acquisition of
assets from such Person, in each case, other than Debt incurred in connection
with, or in contemplation of, such Person becoming a Subsidiary or such
acquisition. Acquired Debt shall be deemed to be incurred on the date of the
related acquisition of assets from any Person or the date the acquired Person
becomes a Subsidiary.
 
    "ADJUSTED TOTAL ASSETS" as of any date means the sum of (i) the amount
determined by multiplying the price at which the Company's Common Shares were
offered in its initial public offering (the "IPO") by the sum of (A) the Common
Shares issued in the IPO and (B) the OP Units not held by the Company that were
issued in connection with the IPO, (ii) the principal amount of outstanding Debt
of the Operating Partnership immediately following the IPO and (iii) the
purchase price or cost of any real estate assets or mortgages receivable (or
interests therein) acquired (including the value of any OP Units issued in
connection therewith) or developed after the IPO and the amount of any
securities offering proceeds and other proceeds of Debt received after the IPO
(to the extent such proceeds were not used to acquire real estate assets or
mortgages receivable or used to reduce Debt), adjusted for the proceeds of any
real estate assets disposed of by the Operating Partnership. This definition of
"Adjusted Total Assets" values the assets owned by the Operating Partnership at
the time of the IPO at the market capitalization of the Operating Partnership at
that time, which the Operating Partnership believes to be a more appropriate
measure of the value of those assets than undepreciated book value, which
reflects their pre-IPO cost before accumulated depreciation.
 
    "ANNUAL DEBT SERVICE CHARGE" as of any date means the amount of any interest
expensed during the four consecutive fiscal quarters most recently ended prior
to such date.
 
    "CONSOLIDATED INCOME AVAILABLE FOR DEBT SERVICE" for any period means
Consolidated Net Income (as defined below) of the Operating Partnership and its
Subsidiaries plus amounts which have been deducted for (i) interest on Debt of
the Operating Partnership and its Subsidiaries, (ii) provision for taxes of the
Operating Partnership and its Subsidiaries based on income, (iii) amortization
of debt discount, (iv) provisions for gains and losses on properties, (v)
depreciation and amortization, (vi) the effect of any noncash charge resulting
from a change in accounting principles in determining Consolidated Net Income
for such period and (vii) amortization of deferred charges.
 
    "CONSOLIDATED NET INCOME" for any period means the amount of net income (or
loss) of the Operating Partnership and its Subsidiaries for such period
determined on a consolidated basis in accordance with GAAP.
 
    "DEBT" of the Operating Partnership or any Subsidiary means any indebtedness
of the Operating Partnership or any Subsidiary, whether or not contingent, in
respect of (i) borrowed money evidenced by bonds, notes, debentures or similar
instruments, (ii) indebtedness secured by any mortgage, pledge, lien,
 
                                      S-16
<PAGE>
charge, encumbrance or any security interest existing on property owned by the
Operating Partnership or any Subsidiary, (iii) reimbursement obligations in
connection with any letters of credit actually issued or amounts representing
the balance deferred and unpaid of the purchase price of any property except any
such balance that constitutes an accrued expense or trade payable or (iv) any
lease of property by the Operating Partnership or any Subsidiary as lessee which
is reflected on the Operating Partnership's consolidated balance sheet as a
capitalized lease in accordance with GAAP; in the case of items of indebtedness
incurred under (i) through (iii) above to the extent that any such items (other
than letters of credit) would appear as a liability on the Operating
Partnership's consolidated balance sheet in accordance with GAAP; and also
includes, to the extent not otherwise included, any obligation of the Operating
Partnership or any Subsidiary to be liable for, or to pay, as obligor, guarantor
or otherwise (other than for purposes of collection in the ordinary course of
business), indebtedness of another Person (other than the Operating Partnership
or any Subsidiary).
 
    "MANAGEMENT COMPANIES" means certain corporations, of which the Operating
Partnership owns 100% of the nonvoting stock and 1% of the voting stock, which
do not qualify as "qualified REIT subsidiaries" under the Code.
 
    "SUBSIDIARY" means, with respect to any Person, any corporation or other
entity of which a majority of (i) the voting power of the voting equity
securities or (ii) the outstanding equity interests of which are owned, directly
or indirectly, by such Person. For the purposes of this definition, "voting
equity securities" means equity securities having voting power for the election
of directors, whether at all times or only so long as no senior class of
security has such voting power by reason of any contingency.
 
    "UNENCUMBERED TOTAL ASSET VALUE" as of any date means the sum of (i) the
portion of Adjusted Total Assets allocable to the Operating Partnership's real
estate assets and (ii) the value of all other assets of the Operating
Partnership and its Subsidiaries on a consolidated basis determined in
accordance with GAAP (but excluding intangibles and accounts receivable), in
each case which are unencumbered by any mortgage, lien, charge, pledge or
security interest.
 
    Compliance with the covenants described herein and with respect to the Notes
generally may not be waived by the Operating Partnership, or by the Trustee
unless the Holders of at least a majority in principal amount of all outstanding
Notes consent to such waiver; provided, however, that the defeasance and
covenant defeasance provisions of the Indenture described under "Discharge,
Defeasance and Covenant Defeasance," below, will apply to the Notes, including
with respect to the covenants described in this Prospectus Supplement.
 
OPTIONAL REDEMPTION
 
    The Notes may be redeemed at any time at the option of the Operating
Partnership, in whole or in part, at a redemption price equal to the sum of (i)
the principal amount of the Notes being redeemed plus accrued interest thereon
to the redemption date and (ii) the Make-Whole Amount, if any, with respect to
such Notes (the "Redemption Price").
 
    If notice of redemption has been given as provided in the Indenture and
funds for the redemption of any Notes called for redemption shall have been made
available on the redemption date referred to in such notice, such Notes will
cease to bear interest on the date fixed for such redemption specified in such
notice and the only right of the Holders of the Notes from and after the
redemption date will be to receive payment of the Redemption Price.
 
    Notice of any optional redemption of any Notes will be given to Holders at
their addresses, as shown in the Security Register, not more than 60 nor less
than 30 days prior to the date fixed for redemption. The notice of redemption
will specify, among other items, the Redemption Price and the principal amount
of the Notes held by such Holder to be redeemed.
 
                                      S-17
<PAGE>
    If less than all the Notes are to be redeemed at the option of the Operating
Partnership, the Operating Partnership will notify the Trustee at least 45 days
prior to giving the notice of redemption (or such shorter period as is
satisfactory to the Trustee) of the aggregate principal amount of Notes to be
redeemed and their redemption date. The Trustee shall select, in such manner as
it shall deem fair and appropriate, Notes to be redeemed in whole or in part.
Notes may be redeemed in part in the minimum authorized denomination for Notes
or in any integral multiple thereof.
 
    Neither the Operating Partnership nor the Trustee shall be required to: (i)
issue, register the transfer of or exchange Notes during a period beginning at
the opening of business 15 days before any selection of Notes to be redeemed and
ending at the close of business on the day of mailing of the relevant notice of
redemption; (ii) register the transfer of or exchange any Note, or portion
thereof, called for redemption, except the unredeemed portion of any Note being
redeemed in part; or (iii) issue, register the transfer of or exchange any Note
that has been surrendered for repayment at the option of the Holder, except the
portion, if any, of such Note not to be so repaid.
 
    As used herein and in the Indenture:
 
    "MAKE-WHOLE AMOUNT" means, in connection with any optional redemption or
accelerated payment of any Note, the excess, if any, of (i) the aggregate
present value as of the date of such redemption or accelerated payment of each
dollar of principal being redeemed or paid and the amount of interest (exclusive
of interest accrued to the date of redemption or accelerated payment) that would
have been payable in respect of such dollar if such redemption or accelerated
payment had not been made, determined by discounting, on a semi-annual basis,
such principal and interest at the Reinvestment Rate (determined on the third
Business Day preceding the date such notice of redemption is given or
declaration of acceleration is made) from the respective dates on which such
principal and interest would have been payable if such redemption or accelerated
payment had not been made, over (ii) the aggregate principal amount of the Notes
being redeemed or paid.
 
    "REINVESTMENT RATE" means the yield on Treasury securities at a constant
maturity corresponding to the remaining life (as of the date of redemption, and
rounded to the nearest month) to stated maturity of the principal being redeemed
(the "Treasury Yield"), plus 0.25%. For purposes hereof, the Treasury Yield
shall be equal to the arithmetic mean of the yields published in the Statistical
Release (as defined below) under the heading "Week Ending" for the "U.S.
Government Securities--Treasury Constant Maturities" with a maturity equal to
such remaining life; provided, that if no published maturity exactly corresponds
to such remaining life, then the Treasury Yield shall be interpolated or
extrapolated on a straight-line basis from the arithmetic means of the yields
for the next shortest and next longest published maturities. For purposes of
calculating the Reinvestment Rate, the most recent Statistical Release published
prior to the date of determination of the Make- Whole Amount shall be used. If
the format or content of the Statistical Release changes in a manner that
precludes determination of the Treasury Yield in the above manner, then the
Treasury Yield shall be determined in the manner that most closely approximates
the above manner, as reasonably determined by the Operating Partnership.
 
    "STATISTICAL RELEASE" means the statistical release designated "H.15(519)"
or any successor publication which is published weekly by the Federal Reserve
System and which establishes yields on actively traded United States government
securities adjusted to constant maturities or, if such statistical release is
not published at the time of any determination of the Make-Whole Amount, then
such other reasonably comparable index which shall be designated by the
Operating Partnership.
 
MERGER, CONSOLIDATION OR SALE OF ASSETS
 
    The Indenture provides that the Operating Partnership may, without the
consent of the holders of any outstanding Debt Securities, consolidate with, or
sell, lease or convey all or substantially all of its assets to, or merge with
or into, any other entity provided that (a) either the Operating Partnership
shall be the continuing entity, or the successor entity (if other than the
Operating Partnership) formed by or resulting
 
                                      S-18
<PAGE>
from any such consolidation or merger or which shall have received the transfer
of such assets is organized under the laws of any domestic jurisdiction and
assumes the Operating Partnership's obligations to pay principal of (and premium
or Make-Whole Amount, 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 that 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 and
legal opinion covering such conditions shall be delivered to the Trustee.
 
EVENTS OF DEFAULT, NOTICE AND WAIVER
 
    The Indenture provides that the following events are "Events of Default"
with respect to the Notes:
 
- - default in the payment of any interest on any Notes when such interest becomes
  due and payable that continues for a period of 30 days
 
- - default in the payment of the principal of (or premium or Make-Whole Amount,
  if any, on) any Notes when due and payable that continues for a period of 5
  days
 
- - default in the performance, or breach, of any other covenant or warranty of
  the Operating Partnership in the Indenture with respect to the Notes and
  continuance of such default or breach for a period of 60 days after there has
  been given to the Operating Partnership by the Trustee, or to the Operating
  Partnership and the Trustee by the Holders of at least 25% in principal amount
  of the Notes, a written notice specifying such default or breach and requiring
  it to be remedied and stating that such notice is a "Notice of Default" under
  the Indenture
 
- - default under any bond, debenture, note, mortgage, Indenture or instrument
  under which there may be issued or by which there may be secured or evidenced
  any indebtedness for money borrowed by the Operating Partnership (or by any
  Subsidiary, the repayment of which the Operating Partnership has guaranteed or
  for which the Operating Partnership is directly responsible or liable as
  obligor or guarantor), having an aggregate principal amount outstanding of at
  least $10,000,000, whether such indebtedness now exists or shall hereafter be
  created, which default shall have resulted in such indebtedness becoming or
  being declared due and payable prior to the date on which it would otherwise
  have become due and payable, without such indebtedness having been discharged,
  or such acceleration having been rescinded or annulled, within a period of 10
  days after there shall have been given, by registered or certified mail, to
  the Operating Partnership by the Trustee, or to the Operating Partnership and
  the Trustee by the Holders of at least 10% in principal amount of the
  outstanding Notes, a written notice specifying such default and requiring the
  Operating Partnership to cause such indebtedness to be discharged or cause
  such acceleration to be rescinded or annulled and stating that such notice is
  a "Notice of Default" under the Indenture, provided, however, that such a
  default on indebtedness which constitutes tax-exempt financing having an
  aggregate principal amount outstanding not exceeding $25,000,000 that results
  solely from a failure of an entity providing credit support for such
  indebtedness to honor a demand for payment on a letter of credit shall not
  constitute an Event of Default
 
- - certain events of bankruptcy, insolvency or reorganization, or court
  appointment of a receiver, liquidator or trustee of the Operating Partnership
  or any Significant Subsidiary or for all or substantially all of either of its
  property
 
    See "Description of Debt Securities--Events of Default, Notice and Waiver"
in the accompanying Prospectus for a description of rights, remedies and other
matters relating to Events of Default.
 
                                      S-19
<PAGE>
DISCHARGE, DEFEASANCE AND COVENANT DEFEASANCE
 
    The provisions of Article 14 of the Indenture relating to defeasance and
covenant defeasance which are described in the accompanying Prospectus will
apply to the Notes, including without limitation the covenants described under
"Description of Notes--Certain Covenants."
 
BOOK-ENTRY SYSTEM
 
    The Notes will be issued in the form of one or more fully registered Global
Notes which will be deposited with, or on behalf of DTC, and registered in the
name of DTC's nominee, Cede & Co. Except under the circumstance described below,
the Notes will not be issuable in definitive form. Unless and until it is
exchanged in whole or in part for the individual Notes represented thereby, a
Global Note may not be transferred except as a whole by DTC to a nominee of DTC
or by a nominee of DTC to DTC or another nominee of DTC or by DTC or any nominee
of DTC to a successor depository or any nominee of such successor.
 
    Upon the issuance of a Global Note, DTC or its nominee will credit on its
book-entry registration and transfer system the respective principal amounts of
the individual Notes represented by such Global Note to the accounts of persons
that have accounts with DTC ("Participants"). Such accounts shall be designated
by the underwriters, dealers or agents with respect to the Notes. Ownership of
beneficial interests in a Global Note will be limited to Participants or persons
that may hold interests through Participants. Ownership of beneficial interests
in such Global Note will be shown on, and the transfer of that ownership will be
effected only through, records maintained by DTC or its nominee (with respect to
beneficial interests of Participants) and records of Participants (with respect
to beneficial interests of persons who hold through Participants). The laws of
some states require that certain purchasers of securities take physical delivery
of such securities in definitive form. Such limits and laws may impair the
ability to own, pledge or transfer any beneficial interest in a Global Note.
 
    So long as DTC or its nominee is the registered owner of such Global Note,
DTC or its nominee, as the case may be, will be considered the sole owner or
holder of the Notes represented by such Global Note for all purposes under the
Indenture and the beneficial owners of the Notes will be entitled only to those
rights and benefits afforded to them in accordance with DTC's regular operating
procedures. Except as provided below, owners of beneficial interest in a Global
Note will not be entitled to have any of the individual Notes registered in
their names, will not receive or be entitled to receive physical delivery of any
such Notes in definitive form and will not be considered the owners or holders
thereof under the Indenture.
 
    Payments of principal of and any interest on, individual Notes represented
by a Global Note registered in the name of DTC or its nominee will be made to
DTC or its nominee, as the case may be, as the registered owner of the Global
Note representing such Notes. None of the Operating Partnership, the Trustee,
any Paying Agent or the Security Registrar will have any responsibility or
liability for any aspect of the records relating to or payments made on account
of beneficial ownership interests in the Global Note for such Notes or for
maintaining, supervising or reviewing any records relating to such beneficial
ownership interests.
 
    The Operating Partnership expects that DTC or its nominee, upon receipt of
any payment of principal or interest in respect of a permanent Global Note
representing any Notes, immediately will credit Participants' accounts with
payments in amounts proportionate to their respective beneficial interests in
the principal amount of such Global Note as shown on the records to DTC or its
nominee. The Operating Partnership also expects that payments by Participants to
owners of beneficial interests in such Global Note held through such
Participants will be governed by standing instructions and customary practices,
as is the case with securities held for the account of customers in bearer form
or registered in "street name." Such payments will be the responsibility of such
Participants.
 
                                      S-20
<PAGE>
    If DTC is at any time unwilling, unable or ineligible to continue as
depository and a successor depository is not appointed by the Operating
Partnership within 90 days, the Operating Partnership will issue individual
Notes in exchange for the Global Note or Notes representing the Notes. In
addition, the Operating Partnership may, at any time and in its sole discretion,
determine not to have any Notes represented by one or more Global Notes and, in
such event, will issue individual Notes in exchange for the Global Note or Notes
representing the Notes.
 
    DTC has advised the Operating Partnership of the following information
regarding DTC: DTC is a limited-purpose trust company organized under the New
York Banking Law, a "banking organization" within the meaning of the New York
Banking Law, a member of the Federal Reserve System, a "clearing corporation"
within the meaning of the New York Uniform Commercial Code and a "clearing
agency" registered pursuant to the provisions of Section 17A of the Securities
Exchange Act of 1934, as amended. DTC holds securities that its Participants
deposit with DTC. DTC also facilitates the settlement among its Participants of
securities transactions, such as transfers and pledges, in deposited securities
through electronic computerized book-entry charges in its Participants'
accounts, thereby eliminating the need for physical movement of securities
certificates. Direct Participants of DTC include securities brokers and dealers
(including the Underwriters), banks, trust companies, clearing corporations, and
certain other organizations. DTC is owned by a number of its direct Participants
and by the New York Stock Exchange, Inc., the American Stock Exchange, Inc. and
the National Association of Securities Dealers, Inc. Access to the DTC system is
also available to others such as securities brokers and dealers, banks and trust
companies that clear through or maintain a custodial relationship with a direct
Participant of DTC, either directly or indirectly. The rules applicable to DTC
and its Participants are on file with the Securities and Exchange Commission.
 
SAME-DAY SETTLEMENT AND PAYMENT
 
    Settlement for the Notes will be made by the Underwriters in immediately
available funds. All payments of principal and interest in respect of the Notes
will be made by the Operating Partnership in immediately available funds.
 
    Secondary trading in long-term notes and debentures of corporate issuers is
generally settled in clearing house or next-day funds. In contrast, the Notes
will trade in DTC's Same-Day Funds Settlement System until maturity or until the
Notes are issued in certificated form, and secondary market trading activity in
the Notes will therefore be required by DTC to settle in immediately available
funds. No assurance can be given as to the effect, if any, of settlement in
immediately available funds on trading activity in the Notes.
 
GOVERNING LAW
 
    The Indenture is governed by and shall be construed in accordance with the
laws of the State of New York applicable to agreements made and to be performed
entirely in such state.
 
NO PERSONAL LIABILITY OR RECOURSE
 
    No recourse under or upon any obligation, covenant or agreement contained in
the Indenture or the Notes, or because of any indebtedness evidenced thereby,
shall be had (i) against the Company or any other past, present or future
partner in the Operating Partnership, (ii) against any other person or entity
which owns an interest, directly or indirectly, in any partner of the Operating
Partnership, or (iii) against any past, present or future shareholder, employee,
officer or director, as such, of the Company or any successor, either directly
or through the Company or the Operating Partnership or any successor, under any
rule of law, statute or constitutional provision or by the enforcement of any
assessment or by any legal or equitable proceeding or otherwise. Each holder of
Notes waives and releases all such liability by accepting such Notes. The waiver
and release are part of the consideration for the issue of the Notes.
 
                                      S-21
<PAGE>
                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    The following discussion summarizes, subject to the limitations set forth
below, the material U.S. Federal income tax consequences of the acquisition,
ownership and disposition of the Notes. The discussion is based upon provisions
of the Code, its legislative history, judicial authority, current administrative
rulings and practice, and existing and proposed Treasury Regulations, all as in
effect and existing on the date hereof. Legislative, judicial or administrative
changes or interpretations may be forthcoming that could alter or modify the
validity of the statements and conclusions set forth below. Any such changes or
interpretations may be retroactive and could adversely affect a holder of the
Notes. Except as otherwise described herein, this discussion applies both to a
person who is (i) a citizen or resident of the United States, (ii) a
corporation, partnership or other entity created or organized in or under the
laws of the United States or any political subdivision thereof (other than a
partnership that is not treated as a United States person under any applicable
Treasury regulations), (iii) an estate or trust the income of which is subject
to U.S. Federal income taxation regardless of its source, (iv) a trust if (a) a
U.S. court may exercise primary supervision over its administration and (b) one
or more U.S. persons have authority to control all substantial decisions of the
trust, or (v) any other person whose income or gain in respect of a Note is
effectively connected with the conduct of a United States trade or business (a
"U.S. Holder") and a person who is not a U.S. Holder (a "Non-U.S. Holder"). This
discussion deals only with the Notes held as capital assets (within the meaning
of Section 1221 of the Code) by holders and does not purport to deal with all
aspects of U.S. Federal income taxation that might be relevant to particular
holders in light of their personal investment circumstances or status, nor does
it discuss the U.S. Federal income tax consequences to certain types of holders
subject to special treatment under the U.S. Federal income tax laws, such as
certain financial institutions, insurance companies, dealers in securities or
foreign currency, tax-exempt organizations, or persons that hold Notes that are
a hedge against, or that are hedged against, currency risk or that are part of a
straddle, a constructive sale transaction, conversion transaction, or persons
whose functional currency is not the U.S. Dollar. Moreover, the effect of any
applicable state, local or foreign tax laws, or any estate or gift tax laws, is
not discussed.
 
    Goodwin, Procter & Hoar LLP, counsel to the Operating Partnership, has
reviewed the following discussion and is of the opinion that, to the extent that
it constitutes matters of law or legal conclusions or purports to describe
certain provisions of the U.S. Federal tax laws, the following discussion is a
correct summary in all material respects of the matters discussed therein.
 
    THE FOLLOWING DISCUSSION IS FOR GENERAL INFORMATION ONLY. EACH INVESTOR IS
URGED TO CONSULT WITH ITS OWN TAX ADVISORS TO DETERMINE THE IMPACT OF SUCH
INVESTOR'S PERSONAL TAX SITUATION ON THE ANTICIPATED TAX CONSEQUENCES, INCLUDING
THE TAX CONSEQUENCES UNDER STATE, LOCAL, FOREIGN OR OTHER TAX LAWS, OF THE
ACQUISITION, OWNERSHIP AND DISPOSITION OF THE NOTES.
 
U.S. HOLDERS: INTEREST, ORIGINAL ISSUE DISCOUNT
 
    A U.S. Holder of a Note will be required to report as ordinary interest
income for U.S. Federal income tax purposes interest earned with respect to a
Note in accordance with the U.S. Holder's regular method of tax accounting.
Although the Notes may be issued at a price that is less than their stated
principal amount, the discount is not expected to exceed 0.25% of the stated
redemption price at maturity multiplied by the number of whole years to
maturity. Therefore, for U.S. Federal income tax purposes, the amount of
original issue discount on the Notes that is attributable to the difference
between their purchase price and their stated redemption price is considered to
be DE MINIMIS and is treated as zero.
 
U.S. HOLDERS: MARKET DISCOUNT, ACQUISITION PREMIUM
 
    If a U.S. Holder acquires a Note for an amount that is less than the sum of
all payments (other than payments with respect to stated interest) due with
respect to such Note at the time of acquisition, the
 
                                      S-22
<PAGE>
amount of such difference will be treated as "market discount" for U.S. Federal
income tax purposes, unless such difference is less than a specified DE MINIMIS
amount. Under the market discount rules, a U.S. Holder will be required to treat
any principal payment on, or any gain on the sale, exchange, retirement or other
disposition of, a Note as ordinary income to the extent that such gain does not
exceed the accrued market discount on such Note. If a U.S. Holder makes a gift
of a Note, accrued market discount, if any, will be recognized as if such U.S.
Holder had sold such Note for a price equal to its fair market value. In
addition, the U.S. Holder may be required to defer, until the maturity of the
Note or the earlier disposition of the Note in a taxable transaction, the
deduction of a portion of the interest expense on any indebtedness incurred or
continued to purchase or carry such Note.
 
    Any market discount will be considered to accrue on a straight-line basis
during the period from the date of acquisition to that maturity date of the
Note, unless the U.S. Holder elects to accrue such market discount on a constant
yield to maturity basis. Such an election is applicable only to the Note with
respect to which it is made and is irrevocable. A U.S. Holder of a Note may
elect to include market discount in income currently as it accrues (on either a
straight-line basis or constant yield to maturity basis), in which case the
rules described above regarding the deferral of interest deductions will not
apply. This election to include market discount in income currently, once made,
applies to all market discount obligations acquired on or after the first day of
the first taxable year to which the election applies and may not be revoked
without the consent of the Internal Revenue Service.
 
    A U.S. Holder that purchases a Note for an amount in excess of the sum of
all payments (other than payments with respect to stated interest) due with
respect to such Note will be considered to have purchased the Note at a
"premium." A U.S. Holder generally may elect to amortize the premium over the
remaining term of the Note on a constant yield to maturity basis. The amount
amortized in any year will be treated as a reduction of the U.S. Holder's
interest income from the Note. A U.S. Holder that elects to amortize such
premium must also reduce its tax basis in a Note by the amount of premium
amortized during its holding period. Bond premium on a Note held by a U.S.
Holder that does not make an election will decrease the gain or increase the
loss otherwise recognized on disposition of the Note. The election to amortize
premium on a constant yield to maturity basis once made applies to all debt
obligations held or subsequently acquired by the electing U.S. Holder on or
after the first day of the first taxable year to which the election applies
(other than debt instruments the interest on which is excludable from gross
income) and may not be revoked without the consent of the Internal Revenue
Service.
 
U.S. HOLDERS: SALE OR REDEMPTION
 
    Unless a nonrecognition provision applies, the sale, exchange, redemption
(including pursuant to an offer by the Operating Partnership) or other
disposition of a Note will be a taxable event for U.S. Federal income tax
purposes. In such event, a U.S. Holder will recognize gain or loss equal to the
difference between (i) the amount of cash plus the fair market value of any
property received upon such sale, exchange, redemption or other taxable
disposition and (ii) the U.S. Holder's adjusted tax basis therein. A U.S.
Holder's adjusted tax basis for a Note generally will be the U.S. Holder's
purchase price for the Note increased by amounts includible in income by the
U.S. Holder as market discount and reduced by any amortized premium. Except with
respect to accrued market discount or accrued and unpaid interest (which will
constitute ordinary income), such gain or loss generally will constitute capital
gain or loss and will be long-term capital gain or loss if the Note has been
held by the U.S. Holder for more than 12 months at the time of such sale,
exchange, redemption or other disposition. The distinction between capital gain
or loss and ordinary income or loss is also relevant for purposes of, among
other things, limitations on the deductibility of capital losses.
 
NON-U.S. HOLDER
 
    A Non-U.S. Holder will not be subject to U.S. Federal income taxes on
payments of principal, premium (if any) or interest (including original issue
discount and market discount, if any) on a Note,
 
                                      S-23
<PAGE>
unless such Non-U.S. Holder is a direct or indirect 10% or greater security
holder of the Operating Partnership, a controlled foreign corporation related to
the Operating Partnership or a bank receiving interest described in Section
881(c)(3)(A) of the Code. To qualify for the exemption from taxation, the last
United States payor in the chain of payment prior to payment to a Non-U.S.
Holder (the "Withholding Agent") must have received in the year in which a
payment of interest or principal occurs, or in either of the two preceding
calendar years, a statement that (i) is signed by the beneficial owner of the
Note under penalties of perjury, (ii) certifies that such owner is not a U.S.
Holder and (iii) provides the name and address of the beneficial owner. The
statement may be made on an IRS Form W-8 or a substantially similar form, and
the beneficial owner must inform the Withholding Agent of any change in the
information on the statement within 30 days of such change. If a Note is held
through a securities clearing organization or certain other financial
institutions, the organization or institution may provide a signed statement to
the Withholding Agent. However, in such case, the signed statement must be
accompanied by a copy of the IRS Form W-8 or the substitute form provided by the
beneficial owner to the organization or institution.
 
    Final regulations dealing with withholding tax on income paid to foreign
persons, backup withholding and related matters (the "New Withholding
Regulations") were issued by the Treasury Department on October 6, 1997. The New
Withholding Regulations generally will be effective for payments made after
December 31, 1999, subject to certain transition rules. Prospective Non-U.S.
Holders are strongly urged to consult their own tax advisors with respect to the
New Withholding Regulations.
 
    Generally, a Non-U.S. Holder will not be subject to Federal income taxes on
any amount that constitutes capital gain upon retirement or disposition of a
Note, provided the gain is not effectively connected with the conduct of a trade
or business in the United States by the Non-U.S. Holder. Certain other
exceptions may be applicable, and a Non-U.S. Holder should consult its tax
advisor in this regard.
 
                                      S-24
<PAGE>
                                  UNDERWRITING
 
    Subject to the terms and conditions set forth in the Underwriting Agreement
(the "Underwriting Agreement") between the Operating Partnership, Gables
Residential Trust and PaineWebber Incorporated (the "Underwriter"), the
Operating Partnership has agreed to sell to the Underwriter, and the Underwriter
has agreed to purchase from the Operating Partnership, all of the Notes.
Pursuant to the terms of the Underwriting Agreement, the Underwriter is
obligated to purchase the entire aggregate principal amount of such Notes if any
are purchased.
 
    The following table describes the Underwriter's compensation in connection
with this offering:
 
<TABLE>
<CAPTION>
                                                                  PER NOTE        TOTAL
                                                                 -----------  -------------
<S>                                                              <C>          <C>
Public Price...................................................     100.000%  $  15,000,000
Underwriting Discounts.........................................        .350%  $      52,500
Company Proceeds...............................................      99.650%  $  14,947,500
</TABLE>
 
The Underwriter will also pay to the Operating Partnership accrued interest from
October 1, 1998 to the date of delivery of the Notes. Out of the proceeds of
this offering, the Operating Partnership will pay expenses of approximately
$75,000, consisting primarily of rating agency charges, legal, accounting and
trustee fees and printing expenses.
 
    The Underwriter has advised the Operating Partnership that it proposes to
offer the Notes in part to the public at the public offering price set forth
above, plus accrued interest from October 1, 1998 to the date of delivery of the
Notes, and in part to certain securities dealers at such price less a concession
not in excess of 0.200% of the principal amount of the Notes. The Underwriter
may allow, and such dealers may reallow, a concession not in excess of 0.125% of
the principal amount of the Notes to certain other dealers. Following completion
of the initial offering of the Notes, the public offering price, concession and
reallowance may change.
 
    The Notes are a new issue of securities with no established trading market.
The Operating Partnership has been advised by the Underwriter that the
Underwriter intends to make a market in the Notes but is not obligated to do so
and may discontinue market making at any time without notice. No assurance can
be given as to the liquidity of the trading market for the Notes.
 
    Pursuant to the Underwriting Agreement, Gables Residential Trust and the
Operating Partnership have agreed to indemnify the Underwriter against certain
liabilities, including liabilities under the Securities Act of 1933, as amended,
or to contribute to payments the Underwriter may be required to make in respect
thereof.
 
    Until the distribution of the Notes is completed, rules of the Securities
and Exchange Commission may limit the ability of the Underwriter to bid for and
purchase the Notes. As an exception to these rules, the Underwriter is permitted
to engage in certain transactions that stabilize the price of the Notes. Such
transactions consist of bids and purchases for the purpose of pegging, fixing or
maintaining the price of the Notes.
 
    If the Underwriter creates a short position in the Notes in connection with
this offering, i.e., if it sells a greater aggregate principal amount of Notes
than is set forth on the cover page of this Prospectus Supplement, the
Underwriter may reduce that short position by purchasing Notes in the open
market. In general, purchases of a security for the purpose of stabilization or
to reduce a short position could cause the price of the security to be higher
than it might be in the absence of such purchases.
 
    Neither the Operating Partnership nor the Underwriter make any
representation or prediction as to the direction or magnitude of any effect that
the transactions described above may have on the price of the Notes. In
addition, neither the Operating Partnership nor the Underwriter make any
representation that
 
                                      S-25
<PAGE>
the Underwriter will engage in such transactions or that such transactions, once
commenced, will not be discontinued without notice.
 
    In the ordinary course of business, the Underwriter and its affiliates have
engaged, and may in the future engage, in commercial banking and investment
banking transactions with the Company, the Operating Partnership and their
affiliates.
 
                                 LEGAL MATTERS
 
    Certain legal matters, including the legality of the Notes being offered
hereby, are being passed upon for the Operating Partnership by Goodwin, Procter
& Hoar LLP, Boston, Massachusetts. Certain legal matters related to this
offering are being passed upon for the Underwriter by O'Melveny & Myers LLP, San
Francisco, California.
 
                                      S-26
<PAGE>
PROSPECTUS
                                  $300,000,000
                            GABLES RESIDENTIAL TRUST
                                PREFERRED SHARES
                                 COMMON SHARES
                                    WARRANTS
                                  $200,000,000
                       GABLES REALTY LIMITED PARTNERSHIP
                                DEBT SECURITIES
                               ------------------
 
    Gables Residential Trust ("Gables" or the "Company") may offer from time to
time in one or more series, (i) preferred shares of beneficial interest, $.01
par value per share ("Preferred Shares"), (ii) common shares of beneficial
interest, $.01 par value per share ("Common Shares"), and (iii) warrants or
other rights to purchase Preferred Shares or Common Shares ("Warrants"). Gables
Realty Limited Partnership (the "Operating Partnership") may offer from time to
time in one or more series unsecured, non-convertible investment grade debt
securities (the "Debt Securities"). The aggregate public offering price of the
Preferred Shares, Common Shares and Warrants shall be up to $300,000,000 and the
aggregate public offering price of the Debt Securities shall be up to
$200,000,000 (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, Preferred Shares, Common Shares and
Warrants (collectively, the "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 this Prospectus (each a "Prospectus Supplement").
 
    The specific terms of the Securities for 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 Preferred Shares, the specific
designation and stated value per share, any dividend, liquidation, redemption,
conversion, voting and other rights, and any initial public offering price; (ii)
in the case of Common Shares, any initial public offering price; (iii) in the
case of Warrants, the duration, offering price, exercise price and
detachability; and (iv) in the case of Debt Securities, the specific title,
aggregate principal amount, ranking, 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 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 Securities,
in each case as may be consistent with the Company's Amended and Restated
Declaration of Trust, as then in effect, or otherwise appropriate to preserve
the status of the Company as a real estate investment trust ("REIT") for Federal
income tax purposes. See "Restrictions on Transfers of Shares of Beneficial
Interest."
 
    The applicable Prospectus Supplement will also contain information, where
appropriate, about certain United States Federal income tax considerations
relating to, and any listing on a securities exchange of, the Securities covered
by such Prospectus Supplement.
 
    The Preferred Shares, Common Shares and Warrants may be offered by the
Company and the Debt Securities may be offered by the Operating Partnership
directly to one or more purchasers, through agents designated from time to time
by the Company or the Operating Partnership, respectively, or to or through
underwriters or dealers. If any agents or underwriters are involved in the sale
of any of the 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 an accompanying Prospectus
Supplement. See "Plan of Distribution." No Securities may be sold without
delivery of a Prospectus Supplement describing the method and terms of the
offering of such Securities.
 
    SEE "RISK FACTORS" ON PAGE 4 FOR CERTAIN FACTORS THAT SHOULD BE CONSIDERED
BY PROSPECTIVE INVESTORS.
                             ---------------------
 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 ATTORNEY GENERAL OF THE STATE OF NEW YORK HAS NOT PASSED ON OR ENDORSED
THE MERITS OF THIS OFFERING. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.
                            ------------------------
 
                The date of this Prospectus is August 11, 1997.
<PAGE>
                             AVAILABLE INFORMATION
 
    The Company and the Operating Partnership have filed with the Securities and
Exchange Commission (the "SEC" or "Commission") a Registration Statement on Form
S-3 (the "Registration Statement") under the Securities Act of 1933, as amended
(the "Securities Act"), with respect to the Securities. This Prospectus, which
constitutes part of the Registration Statement, omits certain of the information
contained in the Registration Statement and the exhibits thereto on file with
the Commission pursuant to the Securities Act and the rules and regulations of
the Commission thereunder. The Registration Statement, including exhibits
thereto, may be inspected and copied at the public reference facilities
maintained by the Commission at 450 Fifth Street, N.W., Room 1024, Washington,
D.C. 20549, and at the Commission's Regional Offices at 7 World Trade Center,
13th Floor, New York, New York 10048, and Citicorp Center, 500 W. Madison
Street, Suite 1400, Chicago, Illinois 60661-2511, and copies may be obtained at
the prescribed rates from the Public Reference Section of the Commission at its
principal office in Washington, D.C. Statements contained in this Prospectus as
to the contents of any contract or other document referred to 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 Statement,
each such statement being qualified in all respects by such reference.
 
    The Company and the Operating Partnership file information electronically
with the Commission, and the Commission maintains a Web Site that contains
reports, proxy and information statements and other information regarding
registrants (including the Company and the Operating Partnership) that file
electronically with the Commission. The address of the Commission's Web Site is
(http://www.sec.gov).
 
    The Company and the Operating Partnership (effective August, 1997) 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 and proxy statements and other
information with the Commission. Such reports, proxy statements and other
information can be inspected and copied at the locations described above. Copies
of such materials can be obtained by mail from the Public Reference Section of
the Commission at 450 Fifth Street, N.W., Room 1024, Washington, D.C. 20549, at
prescribed rates. In addition, the Common Shares are listed on the New York
Stock Exchange (the "NYSE"), and such materials can be inspected and copied at
the NYSE, 20 Broad Street, New York, New York 10005.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
    The following documents are incorporated herein by reference: (i) the
Company's Annual Report on Form 10-K for the year ended December 31, 1996, filed
with the Commission pursuant to the Exchange Act (File No. 1-12590), and the
Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 1997,
filed with the Commission pursuant to the Exchange Act (File No. 1-12590); (ii)
the Company's Current Report on Form 8-K dated July 24, 1997 filed with the
Commission pursuant to the Exchange Act (File No. 1-12590); (iii) the
description of the Company's Common Shares contained in its Registration
Statement on Form 8-A filed with the Commission pursuant to the Exchange Act,
including all amendments and reports updating such description (File No.
1-12590); (iv) the description of the Company's 8.30% Series A Cumulative
Redeemable Preferred Shares on Form 8-A filed with the Commission pursuant to
the Exchange Act (File No. 1-12590); (v) the Proxy Statement prepared by the
Company in connection with its 1997 Annual Meeting of Shareholders (File No.
1-12590); and (vi) the Operating Partnership's Registration Statement on Form
10, as filed June 11, 1997 with the Commission pursuant to the Exchange Act,
including all amendments and reports updating such Registration Statement (File
No. 000-22683).
 
    All other documents filed with the Commission by the Company or the
Operating Partnership pursuant to Section 13(a), 13(c), 14 or 15(d) of the
Exchange Act subsequent to the date of this Prospectus and prior to the
termination of the offering of the Securities are to be incorporated herein by
reference
 
                                       2
<PAGE>
and such documents shall be deemed to be a part hereof from the date of filing
of such documents. Any statement contained in this Prospectus 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 any other subsequently filed document that also
is or is deemed to be incorporated by reference herein modifies or supersedes
such statement. Any statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Prospectus.
 
    ANY PERSON RECEIVING A COPY OF THIS PROSPECTUS MAY OBTAIN, WITHOUT CHARGE,
UPON WRITTEN OR ORAL REQUEST, A COPY OF ANY OF THE DOCUMENTS INCORPORATED BY
REFERENCE HEREIN, EXCEPT FOR THE EXHIBITS TO SUCH DOCUMENTS. WRITTEN REQUESTS
SHOULD BE MAILED TO GABLES RESIDENTIAL TRUST, 2859 PACES FERRY ROAD, OVERLOOK
III, SUITE 1450, ATLANTA, GEORGIA, ATTENTION: DIRECTOR OF INVESTOR RELATIONS.
TELEPHONE REQUESTS MAY BE DIRECTED TO (770) 436-4600.
 
                                       3
<PAGE>
                                  RISK FACTORS
 
    "Safe Harbor" statement under the Private Securities Litigation Reform Act
of 1995: This Prospectus, including the information incorporated by reference
herein, and the applicable Prospectus Supplement contain forward-looking
statements within the meaning of Section 27A of the Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended.
Actual results could differ materially from those projected in the
forward-looking statements as a result of the risk factors set forth below, and
prospective investors should carefully consider such risk factors in conjunction
with the other information contained or incorporated by reference in this
Prospectus and the applicable Prospectus Supplement before making a decision to
purchase any Securities. Unless the context otherwise requires, the "Company"
shall also hereinafter refer to the Operating Partnership and its subsidiaries.
 
RISKS OF DEVELOPMENT, CONSTRUCTION AND ACQUISITION ACTIVITIES
 
    The Company intends to actively continue development and construction of
multifamily apartment communities. There can be no assurance that the Company
will undertake to develop any particular site or that it will be able to
complete such development if it is undertaken. Risks associated with the
Company's development and construction activities include: development
opportunities may be abandoned; construction costs of a community may exceed
original estimates, possibly making the community uneconomical; occupancy rates
and rents at a newly completed community may not be sufficient to make the
community profitable; financing may not be available on favorable terms for
development of a community; and construction and lease-up may not be completed
on schedule, resulting in increased debt service and construction costs.
Development activities are also subject to risks relating to the inability to
obtain, or delays in obtaining, all necessary zoning, land-use, building,
occupancy, and other required governmental permits and authorizations.
 
    The Company intends to continue to acquire multifamily apartment communities
on a select basis. Acquisitions of multifamily communities entail risks that
investments will fail to perform in accordance with expectations. Estimates of
the costs of improvements to bring an acquired property up to standards
established for the market position intended for that property may prove
inaccurate.
 
    The Company anticipates that future developments and acquisitions will be
financed, in whole or in part, under existing credit facilities or loan
commitments or other lines of credit or other forms of secured or unsecured
financing or through the issuance of additional equity by the Company. The use
of equity financing, rather than debt, for future developments or acquisitions
could have a dilutive effect on the interest of existing shareholders of the
Company. If new developments are financed under existing lines of credit, there
is a risk that, unless substitute financing is obtained, further availability
under the lines of credit for new development may not be available or may be
available only on disadvantageous terms. In addition there is a risk that upon
the maturity of such existing lines of credit, the lines of credit will not be
able to be refinanced or that the terms of such refinancing will not be as
favorable as the terms of the existing indebtedness.
 
REAL ESTATE FINANCING RISKS
 
    NO LIMITATION ON DEBT.  The Company currently has a policy of incurring debt
only if upon such incurrence the ratio of debt to total market capitalization
(i.e., the total consolidated debt of the Company as a percentage of the market
value of issued and outstanding equity securities plus total consolidated debt)
would be 60% or less, but the organizational documents of the Company do not
contain any limitation on the amount of indebtedness the Company may incur.
Accordingly, the Company's Board of Trustees could alter or eliminate this
policy. In addition, except as may be set forth in any Prospectus Supplement,
the Debt Securities will not contain any provision that would afford holders of
the Debt Securities protection in the event of a highly leveraged transaction or
change in control of the Operating Partnership or the Company.
 
                                       4
<PAGE>
    EXISTING DEBT MATURITIES, BALLOON PAYMENTS AND REFINANCING RISKS.  The
Company is 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. Because the Company anticipates
that only a small portion of the principal of the Company's mortgage
indebtedness will be repaid prior to maturity, it will be necessary for the
Company to refinance debt. Accordingly, there is a risk that existing
indebtedness on the Communities will not be able to be refinanced or that the
terms of such refinancing will not be as favorable as the terms of the existing
indebtedness.
 
    RISK OF RISING INTEREST RATES.  The Company incurred and expects in the
future to incur floating rate indebtedness in connection with the construction
of multifamily apartment communities, as well as for other purposes. In
addition, additional indebtedness that the Company incurs under the Company's
unsecured revolving credit facility also bears interest at a floating rate.
Accordingly, increases in interest rates would increase the Company's interest
costs (to the extent that the related indebtedness was not protected by the
Company's interest rate protection arrangements).
 
    BOND COMPLIANCE REQUIREMENTS.  Certain of the Company's multifamily
apartment communities are or may be financed with obligations issued by various
local government agencies or instrumentalities, the interest on which is exempt
from Federal income taxation. These obligations are commonly referred to as
"tax-exempt bonds." Under the terms of such bonds, the Company must comply with
various restrictions on the use of the Company's multifamily apartment
communities including the restriction that a percentage of apartments be made
available to low and middle income households. The bond compliance requirements
in effect, and the requirements of any future tax-exempt bond financing utilized
by the Company, may have the effect of limiting the Company's income from the
Company's multifamily apartment communities subject to the financing. In
addition, certain of the tax-exempt bond financing documents require that a
financial institution (the "credit enhancer") guarantee payment of principal of,
and interest on, the bonds, which may take the form of a letter of credit,
surety bond, guarantee agreement or other additional collateral. If the credit
enhancer defaults in its credit enhancement obligations, or the Company is
unable to renew the applicable credit enhancement or otherwise post satisfactory
collateral, a default will occur under the applicable tax-exempt bonds and the
property could be foreclosed upon.
 
REAL ESTATE INVESTMENT RISKS
 
    GENERAL RISKS.  Real property investments are subject to varying degrees of
risk. If the Company's communities do not generate revenues sufficient to meet
operating expenses, including debt service and capital expenditures, the
Company's cash flow and ability to make distributions to its shareholders will
be adversely affected. A multifamily community's revenues and value may be
adversely affected by the general economic climate; the local economic climate
(including the fiscal condition of the relevant governmental bodies); local real
estate conditions (such as oversupply of or reduced demand for apartment homes);
the perceptions by prospective residents of the safety, convenience and
attractiveness of the communities or neighborhoods in which they are located and
the quality of local schools and other amenities; the ability of the owner to
provide adequate management, maintenance and insurance; and increased operating
cost (including real estate taxes and utilities). Certain significant
expenditures associated with each equity investment (such as mortgage payments,
if any, real estate taxes, insurance and maintenance costs) are generally not
reduced when circumstances cause a reduction in income from the investment.
 
    DEPENDENCE ON PRIMARY MARKETS.  The Company's multifamily apartment
communities are located in various metropolitan areas in the Southeastern and
Southwestern United States, particularly Atlanta, Houston and Dallas, and the
Company's performance and its ability to make distributions to shareholders
could be adversely affected by economic and social conditions in these
geographic areas.
 
    MARKET ILLIQUIDITY.  Equity real estate investments are relatively illiquid.
Such illiquidity will tend to limit the ability of the Company to vary its
portfolio promptly in response to changes in economic or other conditions. In
addition, the Internal Revenue Code (the "Code") limits the Company's ability to
sell
 
                                       5
<PAGE>
properties held for fewer than four years, which may affect the Company's
ability to sell properties without adversely affecting returns to holders of
Common Shares.
 
    OPERATING RISKS.  The Company's multifamily apartment communities are
subject to all operating risks common to multifamily apartment communities in
general, any and all of which might adversely affect apartment occupancy or
rental rates. Increases in unemployment in the areas in which the communities
owned or managed by the Company are located might adversely affect multifamily
occupancy or rental rates. Increases in operating costs due to inflation and
other factors may not necessarily be offset by increased rents. Residents may be
unable or unwilling to pay rent increases. Future enactment of rent control or
rent stabilization laws or other laws regulating multifamily housing may reduce
rental revenue or increase operating costs. If operating expenses increase, the
local rental market may limit the extent to which rents may be increased to meet
increased expenses without decreasing occupancy rates.
 
    COMPETITION.  There are numerous housing alternatives that compete with the
Company's multifamily apartment communities in attracting residents. The
Company's multifamily apartment communities compete directly with other
multifamily rental apartments and single family homes that are available for
rent or purchase in the markets in which the Company's multifamily apartment
communities are located. In addition, other competitors for development and
acquisitions of properties, including other REITs, may have greater resources
than the Company. Increased supply of apartment homes in the Company's principal
markets over the past few years and the next few years may adversely affect the
current favorable demand environment for apartment homes, including occupancy
and rental rates.
 
    AFFORDABLE HOUSING LAWS.  Certain of the Company's multifamily apartment
communities are, and will be in the future, subject to federal, state and local
statutes or other restrictions requiring that a percentage of apartments be made
available to low and middle income households. These laws and obligations, as
well as any changes thereto making it more difficult to meet such requirements,
or a reduction in or elimination of certain financing advantages available to
those persons satisfying such requirements, could adversely affect the Company's
profitability and its ability to develop certain communities in the future.
 
RISK OF FEE MANAGEMENT BUSINESS
 
    The Company manages properties owned by third parties for a fee. Risks
associated with the management of properties owned by third parties include the
risk that the management contracts will be terminated and/or that the rental
revenues upon which management fees are based will decline, resulting in
decreased management fee income.
 
LIMITS ON CHANGES IN CONTROL
 
    Certain provisions contained in the Company's Amended and Restated
Declaration of Trust (the "Declaration of Trust") and Second Amended and
Restated Bylaws and under Maryland law may have the effect of discouraging a
third party from making an acquisition proposal for the Company and may thereby
inhibit a change in control of the Company. For example, such provisions may (i)
deter tender offers for Common Shares, which offers may be attractive to the
shareholders, or (ii) deter purchases of large blocks of Common Shares, thereby
limiting the opportunity for shareholders to receive a premium for their Common
Shares over then-prevailing market prices.
 
POSSIBLE ADVERSE CONSEQUENCES OF LIMITS ON OWNERSHIP OF SHARES OF BENEFICIAL
  INTEREST
 
    In order to maintain its qualification as a REIT, not more than 50% in value
of the outstanding shares of beneficial interest of the Company may be owned,
directly or indirectly, by five or fewer persons. In order to protect the
Company against the risk of losing its status as a REIT due to a concentration
of ownership among its shareholders, the Company has limited ownership of shares
of beneficial interest by
 
                                       6
<PAGE>
any single shareholder to 9.8% of the outstanding shares of beneficial interest.
Although the Board of Trustees presently has no intention of doing so, the Board
of Trustees could waive this restriction if it were satisfied, based upon the
advice of tax counsel, that ownership in excess of this limit would not
jeopardize the Company's status as a REIT and the Board of Trustees otherwise
decided such action would be in the best interest of the Company. This
restriction also does not apply with respect to an offeror in the event of an
all-cash tender offer by it which has been accepted by shareholders representing
at least two-thirds of the Company's outstanding shares. Shares acquired or
transferred in breach of the limitation will be automatically exchanged for
shares not entitled to vote or to participate in dividends or other
distributions. In addition, shares acquired or transferred in breach of the
limitation may be purchased by the Company for the lesser of the price paid and
the market price (as determined in the manner set forth in the Declaration of
Trust).
 
COST OF COMPLIANCE WITH AMERICANS WITH DISABILITIES ACT AND SIMILAR LAWS
 
    Under the Americans with Disabilities Act of 1990 (the "ADA"), all places of
public accommodation are required to meet certain Federal requirements related
to access and use by disabled persons. Although management of the Company
believes that the Company's communities are substantially in compliance with the
present requirements of the ADA, the Company may incur additional costs of
complying with the ADA. A number of additional federal, state and local laws
exist which also may require modifications to the Company's communities, or
restrict certain further renovations thereof, with respect to access thereto by
disabled persons. For example, the Fair Housing Act of 1988 (the "FHAA")
requires apartment communities first occupied after March 13, 1990 to be
accessible to the handicapped. Noncompliance with the FHAA could result in the
imposition of fines or an award of damages to private litigants. Additional
legislation may impose further burdens or restrictions on owners with respect to
access by disabled persons.
 
    The ultimate amount of the cost of compliance with the ADA or such
legislation is not currently ascertainable, and, while such costs are not
expected to have a material effect on the Company, such costs could be
substantial.
 
ADVERSE CONSEQUENCES OF FAILURE TO QUALIFY AS A REIT; OTHER TAX LIABILITIES
 
    The Company intends at all times to operate so as to qualify as a REIT under
the Code. Although management of the Company believes that the Company is
organized and operates in such a manner, no assurance can be given that the
Company qualifies or will remain qualified as a REIT. Qualification as a REIT
involves the application of highly technical and complex Code provisions for
which there are only limited judicial and administrative interpretations. The
determination of various factual matters and circumstances not entirely within
the Company's control may affect the Company's ability to qualify as a REIT. If
the Company fails to qualify as a REIT, it will be subject to Federal income tax
(including any applicable alternative minimum tax) on its taxable income at
regular corporate rates. In addition, unless entitled to relief under certain
statutory provisions, the Company will be disqualified from treatment as a REIT
for the four taxable years following the year during which qualification is
lost. The additional tax would significantly reduce the cash flow available for
distribution to shareholders.
 
POSSIBLE ADVERSE IMPACT OF MARKET CONDITIONS ON MARKET PRICE
 
    The market value of the Securities could be substantially affected by
general market conditions, including changes in interest rates. An increase in
market interest rates would lead purchasers of the Debt Securities and may lead
purchasers of the Common Shares, Preferred Shares and Warrants to demand a
higher annual yield, which could adversely affect the market price of the
outstanding Common Shares and other Securities. Moreover, numerous other factors
such as government regulatory action and changes in tax laws could have a
significant impact on the future market price of the Common Shares or other
Securities.
 
                                       7
<PAGE>
POSSIBLE ENVIRONMENTAL LIABILITIES
 
    Under various Federal, state and local environmental laws, a current or
previous owner or operator of real estate may be required (typically regardless
of knowledge or responsibility) to investigate and clean up hazardous or toxic
substances or petroleum product releases at such property and may be held liable
to a governmental entity or to third parties for property damage and for
investigation and clean-up costs incurred by such parties in connection with the
contamination, which may be substantial. The presence of such substances (or the
failure to properly remediate the contamination) may adversely affect the
owner's ability to borrow against, sell or rent such property.
 
                                       8
<PAGE>
                   THE COMPANY AND THE OPERATING PARTNERSHIP
 
GENERAL
 
    Gables is one of the largest managers, developers and owners of multifamily
apartment communities in the Southeastern and Southwestern United States. The
Company is a self-administered and self-managed real estate investment trust (a
"REIT") and has elected to be treated as a REIT under the Internal Revenue Code
of 1986, as amended, beginning with its taxable year ending December 31, 1994.
The Company's Common Shares are listed on the New York Stock Exchange under the
symbol "GBP."
 
    The Company currently engages in the multifamily apartment community
management, development, construction and acquisition businesses, including the
provision of related brokerage and corporate rental housing services.
Substantially all of the Company's business is conducted through, and
substantially all of the Company's interests in its properties are held by or
through, the Operating Partnership. Through its ownership of Gables GP, Inc.
("GGPI"), a Texas corporation and wholly-owned subsidiary of the Company that is
the sole general partner of the Operating Partnership, and its ownership of a
direct limited partnership interest in the Operating Partnership, the Company is
currently an 84.6% economic owner of the Operating Partnership (excluding the
Company's direct or indirect ownership of 100% of the Series A Preferred Units
issued in connection with the Company's sale of 4,600,000 shares of 8.30% Series
A Cumulative Redeemable Preferred Shares on July 24, 1997) (this structure is
commonly referred to as an umbrella partnership REIT or "UPREIT").
 
    At March 31, 1997, the Company owned 48 completed multifamily apartment
communities and had an indirect 25% interest in two multifamily apartment
communities, collectively comprising 15,480 apartment homes. The Company also
had seven multifamily apartment communities under development as of March 31,
1997 which are expected to comprise 2,025 apartment homes. In addition, the
Company owns four sites on which it intends to develop apartment communities and
has rights to acquire six additional sites. Although there is no assurance that
the Company will develop multifamily apartment communities at any sites or
pursuant to any such development rights, an estimated 2,771 apartment homes
could be added to its portfolio from the successful development of all such
locations. In May, 1997, the Company acquired an existing multifamily apartment
community comprising 438 apartment homes. The Company also has rights to acquire
an existing multifamily apartment community comprising 82 apartment homes.
 
    The Company was organized as a REIT under the laws of the State of Maryland
in 1993 to continue and expand the operations of its privately owned predecessor
organization. The Operating Partnership was organized as a limited partnership
under the laws of Delaware in 1993. The Company's Common Shares have been traded
on the New York Stock Exchange since the completion of the Company's initial
public offering on January 26, 1994 (the "Initial Offering"). The Company's and
the Operating Partnership's executive offices are located at 2859 Paces Ferry
Road, Atlanta, Georgia 30339 and their telephone number is (770) 436-4600.
 
                                USE OF PROCEEDS
 
    The Company is required by the terms of the partnership agreement of the
Operating Partnership to invest the net proceeds of any sale of Common Shares or
Preferred Shares in the Operating Partnership in exchange for additional units
of limited partnership of the Operating Partnership ("Units") or preferred
Units, as the case may be. As will be more fully described in the applicable
Prospectus Supplement, the Company and the Operating Partnership intend to use
the net proceeds from the sale of Securities for one or more of the following:
repayment of indebtedness, acquisition of or investment in new properties and
developments, maintenance of currently owned properties and general corporate
purposes.
 
                                       9
<PAGE>
                         DESCRIPTION OF DEBT SECURITIES
 
GENERAL
 
    The Company conducts its business principally through the Operating
Partnership. Consequently, the Operating Partnership, and not the Company, will
issue the Debt Securities. The Debt Securities will be direct unsecured
obligations of the Operating Partnership and may be either senior Debt
Securities ("Senior Securities") or subordinated Debt Securities ("Subordinated
Securities"). The Debt Securities will be issued under one or more indentures,
each dated as of a date prior to the issuance of the Debt Securities to which it
relates. Senior Securities and Subordinated Securities may be issued pursuant to
separate indentures (respectively, a "Senior Indenture" and a "Subordinated
Indenture"), in each case between the Operating Partnership and First Union
National Bank (a "Trustee"), and in the form that has been filed as an exhibit
to the Registration Statement of which this Prospectus is a part, subject to
such amendments or supplements as may be adopted from time to time. The Trustee
is one of the lenders to the Company's revolving line of credit, and may, from
time to time, enter into other commercial relationships with the Company and the
Operating Partnership. The Senior Indenture and the Subordinated Indenture, as
amended or supplemented from time to time, are sometimes hereinafter referred to
collectively as the "Indentures." The Indentures will be subject to and governed
by the Trust Indenture Act of 1939, as amended (the "TIA"). The statements made
under this heading relating to the Debt Securities and the Indentures are
summaries of the material provisions thereof, do not purport to be complete and
are qualified in their entirety by reference to the Indentures and such Debt
Securities.
 
    Capitalized terms used herein and not defined shall have the meanings
assigned to them in the applicable Indenture.
 
TERMS
 
    The indebtedness represented by the Senior Securities will rank equally with
all other unsecured and unsubordinated indebtedness of the Operating
Partnership. The indebtedness represented by Subordinated Securities will be
subordinated in right of payment to the prior payment in full of the Senior Debt
of the Operating Partnership as described under "--Subordination." The
particular terms of the Debt Securities offered by a Prospectus Supplement will
be described in the applicable Prospectus Supplement, along with any applicable
modifications of or additions to the general terms of the Debt Securities as
described herein and in the applicable Indenture and any applicable Federal
income tax considerations. Accordingly, for a description of the terms of any
series of Debt Securities, reference must be made to both the Prospectus
Supplement relating thereto and the description of the Debt Securities set forth
in this Prospectus.
 
    Except as set forth in any Prospectus Supplement, 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 by the Operating Partnership or as
set forth in the applicable Indenture or in one or more indentures supplemental
to such 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 issuance of
additional Debt Securities of such series.
 
    Each Indenture provides that the Operating Partnership may, but need not,
designate more than one Trustee thereunder, each with respect to one or more
series of Debt Securities. Any Trustee under an Indenture may resign or be
removed with respect to one or more series of Debt Securities and a successor
Trustee may be appointed to act with respect to such series. 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
applicable Indenture separate and apart from the trust administered by any other
Trustee, and, except as otherwise indicated herein, any action described herein
to be taken by each 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 applicable Indenture.
 
                                       10
<PAGE>
    The following summaries set forth the material terms and provisions of the
Indentures and the Debt Securities. The Prospectus Supplement relating to the
series of Debt Securities being offered will contain further terms of such Debt
Securities, including the following specific terms:
 
        (1) The title of such Debt Securities and whether such Debt Securities
    are Senior Securities or Subordinated Securities;
 
        (2) The aggregate principal amount of such Debt Securities and any limit
    on such aggregate principal amount;
 
        (3) The price (expressed as a percentage of the principal amount
    thereof) 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 dates on which any such
    interest will be payable, the record dates for such interest payment dates,
    or the method by which such dates shall be determined, the persons 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 the principal of (and premium, if any) and
    interest, if any, on such Debt Securities will be payable, where such Debt
    Securities may be surrendered for registration of transfer or exchange and
    where notices or demands to or upon the Operating Partnership in respect of
    such Debt Securities and the applicable Indenture may be served;
 
        (8) The period or periods, if any, within which, the price or prices at
    which and the other terms and conditions upon which such Debt Securities
    may, pursuant to any optional or mandatory redemption provisions, be
    redeemed, as a whole or in part, at the option of the Operating Partnership;
 
        (9) The obligation, if any, of the Operating Partnership to redeem,
    repay or purchase such Debt Securities pursuant to any sinking fund or
    analogous provision or at the option of a holder thereof, and the period or
    periods within which, the price or prices at which and the other terms and
    conditions upon which such Debt Securities will 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 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) Whether such Debt Securities will be issued in certificated or
    book-entry form and, if in book entry form, the identity of the depository
    for such Debt Securities;
 
        (13) 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;
 
                                       11
<PAGE>
        (14) The applicability, if any, of the defeasance and covenant
    defeasance provisions described herein or set forth in the applicable
    Indenture, or any modification thereof;
 
        (15) Whether and under what circumstances the Operating Partnership will
    pay any additional amounts on such Debt Securities in respect of any tax,
    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;
 
        (16) Any deletions from, modifications of or additions to the events of
    default or covenants of the Operating Partnership, to the extent different
    from those described herein or set forth in the applicable Indenture with
    respect to such Debt Securities, and any change in the right of any Trustee
    or any of the holders to declare the principal amount of any of such Debt
    Securities due and payable;
 
        (17) With respect to any Debt Securities that provide for optional
    redemption or prepayment upon the occurrence of certain events (such as a
    change of control of the Operating Partnership), (i) the possible effects of
    such provisions on the market price of the Operating Partnership's or the
    Company's securities or in deterring certain mergers, tender offers or other
    takeover attempts, and the intention of the Operating Partnership to comply
    with the requirements of Rule 14e-1 under the Exchange Act and any other
    applicable securities laws in connection with such provisions; (ii) whether
    the occurrence of the specified events may give rise to cross-defaults on
    other indebtedness such that payment on such Debt Securities may be
    effectively subordinated; and (iii) the existence of any limitation on the
    Operating Partnership's financial or legal ability to repurchase such Debt
    Securities upon the occurrence of such an event (including, if true, the
    lack of assurance that such a repurchase can be effected) and the impact, if
    any, under the Indenture of such a failure, including whether and under what
    circumstances such a failure may constitute an event of default;
 
        (18) The name of the applicable trustee and the nature of any material
    relationship with the Operating Partnership or with any of its affiliates,
    and the percentage of Debt Securities of the class necessary to require the
    trustee to take action; and
 
        (19) Any other terms of such Debt Securities not inconsistent with the
    provisions of the applicable Indenture.
 
    If so provided in the applicable Prospectus Supplement, the Debt Securities
may be issued at a discount below their principal amount and provide for less
than the entire principal amount thereof to be payable upon declaration of
acceleration of the maturity thereof ("Original Issue Discount Securities"). In
such cases, all material U.S. Federal income tax, accounting and other
considerations applicable to Original Issue Discount Securities will be
described in the applicable Prospectus Supplement.
 
    Except as described under "--Merger, Consolidation or Sale of Assets" or as
may be set forth in any Prospectus Supplement, the Debt Securities will 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 (i) a highly leveraged or similar transaction involving the
Operating Partnership, the management of the Operating Partnership or the
Company, or any affiliate of any such party, (ii) a change of control, or (iii)
a reorganization, restructuring, merger or similar transaction involving the
Operating Partnership that may adversely affect the holders of the Debt
Securities. In addition, subject to the limitations set forth under "--Merger,
Consolidation or Sale of Assets," the Operating Partnership may, in the future,
enter into certain transactions, such as the sale of all or substantially all of
its assets or the merger or consolidation of the Operating Partnership, that
would increase the amount of the Operating Partnership's indebtedness or
substantially reduce or eliminate the Operating Partnership's indebtedness or
substantially reduce or eliminate the Operating Partnership's assets, which may
have an adverse effect on the Operating Partnership's ability to service its
indebtedness, including the Debt Securities. Neither Maryland General
Corporation Law nor the governing instruments of the Company and the Operating
Partnership define the term "substantially all" in connection with the sale of
assets. Additionally, Maryland
 
                                       12
<PAGE>
cases interpreting the words "substantially all" all rely heavily upon the facts
and circumstances of the particular case. Consequently, to determine whether a
sale of "substantially all" of the Operating Partnership's assets has occurred,
a holder of Debt Securities must review the financial and other information
disclosed by the Operating Partnership to the public. Restrictions on ownership
and transfers of the Common Shares and Preferred Shares are designed to preserve
the Company's status as a REIT and, therefore, may act to prevent or hinder a
change of control. See "Limits on Ownership of Shares of Beneficial Interest."
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 that are described below, including any addition of a
covenant or other provision providing event risk or similar protection.
 
DENOMINATION, 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.
 
    Subject to certain limitations imposed upon Debt Securities issued in
book-entry form, the Debt Securities of any series will be exchangeable for any
authorized denomination of other Debt Securities of the same series and of a
like aggregate principal amount and tenor upon surrender of such Debt Securities
at the corporate trust office of the applicable Trustee or at the office of any
transfer agent designated by the Operating Partnership for such purpose. 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
registration of transfer or exchange thereof at the corporate trust office of
the applicable Trustee or at the office of any transfer agent designated by the
Operating Partnership for such purpose. Every Debt Security surrendered
registration of transfer or exchange must be duly endorsed or accompanied by a
written instrument of transfer, and the person requesting such action must
provide evidence of title and identity satisfactory to the applicable Trustee or
transfer agent. No service charge will be made for any registration of transfer
or exchange of any Debt Securities, but the Trustee or the Operating Partnership
may require payment of a sum sufficient to cover any tax or other governmental
charge payable in connection therewith. If the applicable Prospectus Supplement
refers to any transfer agent (in addition to the applicable 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.
 
    Neither the Operating Partnership nor any Trustee shall be required (i) to
issue, register the transfer of or exchange Debt Securities of any series during
a period beginning at the opening of business 15 days before the day of mailing
of a notice of redemption of any Debt Securities that may be selected for
redemption and ending at the close of business on the day of such mailing; (ii)
to register the transfer of or exchange any Debt Security, or portion thereof,
so selected for redemption, in whole or in part, except the unredeemed portion
of any Debt Security being redeemed in part; or (iii) to issue, register the
transfer of or exchange any Debt Security that has been surrendered for
repayment at the option of the holder, except the portion, if any, of such Debt
Security not to be so repaid.
 
MERGER, CONSOLIDATION OR SALE OF ASSETS
 
    The Indentures provide that the Operating Partnership may, without the
consent of the holders of any outstanding Debt Securities, consolidate with, or
sell, lease or convey all or substantially all of its assets to, or merge with
or into, any other entity provided that (i) either the Operating Partnership
shall be the continuing entity, or the successor entity (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, and which is
 
                                       13
<PAGE>
organized under the laws of any domestic jurisdiction and assumes (A) the
Operating Partnership's obligations to pay principal of (and premium, if any)
and interest on all of the Debt Securities and (B) the due and punctual
performance and observance of all of the covenants and conditions contained in
each Indenture; (ii) immediately after giving effect to such transaction and
treating any indebtedness that 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 Indentures, 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 (iii) an officers' certificate and legal opinion
covering such conditions shall be delivered to each Trustee.
 
CERTAIN COVENANTS
 
    EXISTENCE.  Except as permitted under "--Merger, Consolidation or Sale of
Assets," the Indentures require the Operating Partnership to do or cause to be
done all things necessary to preserve and keep in full force and effect its
existence, rights and franchises; PROVIDED, HOWEVER, that the Operating
Partnership shall not be required to preserve any right or franchise if it
determines that the preservation thereof is no longer desirable in the conduct
of its business.
 
    MAINTENANCE OF PROPERTIES.  The Indentures require the Operating Partnership
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 and supplied with all necessary equipment
and will cause to be made all necessary repairs, renewals, replacements,
betterments and improvements thereof, 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 and its subsidiaries shall not be
prevented from selling or otherwise disposing of their properties for value in
the ordinary course of business.
 
    INSURANCE.  The Indentures require the Operating Partnership to cause each
of its and its subsidiaries' insurable properties to be insured against loss or
damage at least equal to their then full insurable value with insurers of
recognized responsibility and, if described in the applicable Prospectus
Supplement, having a specified rating from a recognized insurance rating
service.
 
    PAYMENT OF TAXES AND OTHER CLAIMS.  The Indentures require the Operating
Partnership 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 the income, profits
or property of the Operating Partnership or 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 shall not be required to pay or
discharge or cause to be paid or discharged any such tax, assessment, charge or
claim whose amount, applicability or validity is being contested in good faith.
 
    ADDITIONAL COVENANTS.  Any additional covenants of the Operating Partnership
with respect to any series of Debt Securities will be set forth in the
Prospectus Supplement relating thereto.
 
EVENTS OF DEFAULT, NOTICE AND WAIVER
 
    Unless otherwise provided in the applicable Prospectus Supplement, each
Indenture provides that the following events are "Events of Default" with
respect to any series of Debt Securities issued thereunder: (i) default for 30
days in the payment of any installment of interest on any Debt Security of such
series; (ii) default for 5 days in the payment of principal of (or premium, if
any, on) any Debt Security of such series at its maturity; (iii) default for 5
days in making any sinking fund payment as required for any Debt Security of
such series; (iv) default in the performance or breach of any other covenant or
warranty of the Operating Partnership contained in the Indenture (other than a
covenant added to the Indenture solely for
 
                                       14
<PAGE>
the benefit of a series of Debt Securities issued thereunder other than such
series), continued for 60 days after written notice as provided in the
applicable Indenture; (v) a default under any bond, debenture, note, mortgage,
indenture or instrument under which there may be issued or by which there may be
secured or evidenced any indebtedness for money borrowed by the Operating
Partnership (or by any of its subsidiaries, the repayment of which the Operating
Partnership has guaranteed or for which the Operating Partnership is directly
responsible or liable as obligor or guarantor) having an aggregate principal
amount outstanding of at least $25,000,000, whether such indebtedness exists on
the date of such Indenture or shall thereafter be created, which default shall
have resulted in such indebtedness becoming or being declared due and payable
prior to the date on which it would otherwise have become due and payable,
without such indebtedness having been discharged, or such acceleration having
been rescinded or annulled, within a period of 10 days after there shall have
been given, by registered or certified mail, to the Operating Partnership by the
Trustee or to the Operating Partnership and the Trustee by the holders of at
least 10% in principal amount of the outstanding Debt Securities of that series
a written notice specifying such default and requiring the Operating Partnership
to cause such indebtedness to be discharged or cause such acceleration to be
rescinded or annulled and stating that such notice is a "Notice of Default"
under such Indenture; PROVIDED, HOWEVER, that such a default on indebtedness
which constitutes tax-exempt financing that results solely from a failure of an
entity providing credit support for such indebtedness to honor a demand for
payment on a letter of credit shall not constitute an Event of Default; (vi)
certain events of bankruptcy, insolvency or reorganization, or court appointment
of a receiver, liquidator or trustee of the Operating Partnership or any
Significant Subsidiary of the Operating Partnership; and (vii) any other event
of default provided with respect to a particular series of Debt Securities. The
term "Significant Subsidiary" has the meaning ascribed to such term in
Regulation S-X promulgated under the Securities Act.
 
    If an Event of Default under any Indenture with respect to Debt Securities
of any series at the time outstanding occurs and is continuing, then in every
such case the applicable Trustee or the holders of not less than 25% in
principal amount of the Debt Securities of that series will have the right to
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 the Debt
Securities of that series to be due and payable immediately by written notice
thereof to the Operating Partnership (and to the applicable Trustee if given by
the holders). However, at any time after such a declaration of acceleration with
respect to Debt Securities of such series (or of all Debt Securities then
outstanding under any Indenture, as the case may be) has been made, but before a
judgment or decree for payment of the money due has been obtained by the
applicable Trustee, the holders of not less than a majority in principal amount
of outstanding Debt Securities of such series (or of all Debt Securities then
outstanding under the applicable Indenture, as the case may be) may rescind and
annul such declaration and its consequences if (i) the Operating Partnership
shall have deposited with the applicable Trustee all required payments of the
principal of (and premium, if any) and interest on the Debt Securities of such
series (or of all Debt Securities then outstanding under the applicable
Indenture, as the case may be), plus certain fees, expenses, disbursements and
advances of the applicable Trustee; and (ii) all events of default, other than
the non-payment of accelerated principal (or specified portion thereof), with
respect to Debt Securities of such series (or of all Debt Securities then
outstanding under the applicable Indenture, as the case may be) have been cured
or waived as provided in such Indenture. The Indentures also provide that the
holders of not less than a majority in principal amount of the outstanding Debt
Securities of any series (or of all Debt Securities then outstanding under the
applicable Indenture, as the case may be) may waive any past default with
respect to such series and its consequences, except a default (i) in the payment
of the principal of (or premium, if any) or interest on any Debt Security of
such series; or (ii) in respect of a covenant or provision contained in the
applicable Indenture that cannot be modified or amended without the consent of
the holder of each outstanding Debt Security affected thereby.
 
    The Indentures require each Trustee to give notice to the holders of Debt
Securities within 90 days of a default under the applicable Indenture unless
such default shall have been cured or waived; PROVIDED, HOWEVER, that such
Trustee may withhold notice to the holders of any series of Debt Securities of
any
 
                                       15
<PAGE>
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 specified responsible officers of such Trustee
consider such withholding to be in the interest of such holders.
 
    The Indentures provide that no holders of Debt Securities of any series may
institute any proceedings, judicial or otherwise, with respect to such Indenture
or for any remedy thereunder, except in the case of failure of the applicable
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 25% in principal amount of the outstanding Debt Securities of such
series, as well as an offer of indemnity reasonably satisfactory to it. 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
dates thereof.
 
    The Indentures provide that, subject to provisions in each Indenture
relating to its duties in case of default, a Trustee will be under no obligation
to exercise any of its rights or powers under an Indenture at the request or
direction of any holders of any series of Debt Securities then outstanding under
such Indenture, unless such holders shall have offered to the Trustee thereunder
reasonable security or indemnity. The holders of not less than a majority in
principal amount of the outstanding Debt Securities of any series (or of all
Debt Securities then outstanding under an Indenture, as the case may be) shall
have the right to direct the time, method and place of conducting any proceeding
for any remedy available to the applicable Trustee, or of exercising any trust
or power conferred upon such Trustee. However, a Trustee may refuse to follow
any direction which is in conflict with any law or the applicable Indenture,
which may involve such Trustee in personal liability or which may be unduly
prejudicial to the holders of Debt Securities of such series not joining
therein.
 
    Within 120 days after the close of each fiscal year, the Operating
Partnership will be required to deliver to each Trustee a certificate, signed by
one of several specified officers of GGPI, as general partner of the Operating
Partnership, stating whether or not such officer has knowledge of any default
under the applicable Indenture and, if so, specifying each such default and the
nature and status thereof.
 
MODIFICATION OF THE INDENTURES
 
    Modifications and amendments of an Indenture will be permitted to be made
only with the consent of the holders of not less than a majority in principal
amount of all outstanding Debt Securities issued under such Indenture 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, (i) change the stated maturity of the principal of, or any
installment of interest (or premium, if any) on, any such Debt Security; (ii)
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; (iii) 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; (iv) impair the right to institute suit for the enforcement of
any payment on or with respect to any such Debt Security; (v) reduce the
above-stated percentage of any outstanding Debt Securities necessary to modify
or amend the applicable Indenture with respect to such Debt Securities, 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
applicable Indenture; or (vi) 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.
 
                                       16
<PAGE>
    The holders of a majority in aggregate principal amount of the outstanding
Debt Securities of each series may, on behalf of all holders of Debt Securities
of that series, waive, insofar as that series is concerned, compliance by the
Operating Partnership with certain restrictive covenants of the applicable
Indenture.
 
    Modifications and amendments of an Indenture will be permitted to be made by
the Operating Partnership and the respective Trustee thereunder 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 such Indenture; (ii) to add to the covenants of the Operating
Partnership 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 in such 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 an Indenture to facilitate the issuance of, or to liberalize
certain terms 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 an Indenture, provided that any such change or elimination shall become
effective only when there are no Debt Securities outstanding of any series
created prior thereto which are entitled to the benefit of such provision; (vi)
to secure the Debt Securities; (vii) to establish the form or terms of Debt
Securities of any series, (viii) to provide for the acceptance of appointment by
a successor Trustee or facilitate the administration of the trusts under an
Indenture by more than one Trustee; (ix) to cure any ambiguity, defect or
inconsistency in an Indenture, provided that such action shall not adversely
affect the interests of holders of Debt Securities of any series issued under
such Indenture; or (x) to supplement any of the provisions of an 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 adversely
affect the interests of the holders of the outstanding Debt Securities of any
series.
 
    The Indentures provide 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 any 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 such
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.
 
    The Indentures contain provisions for convening meetings of the holders of
Debt Securities of a series. A meeting will be permitted to be called at any
time by the applicable Trustee, and also, upon request, by the Operating
Partnership or the holders of at least 10% in principal amount of the
outstanding Debt Securities of such series, in any such case upon notice given
as provided in such Indenture. Except for any consent that must be given by the
holder of each Debt Security affected by certain modifications and amendments of
an 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,
 
                                       17
<PAGE>
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
an 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.
 
    Notwithstanding the foregoing provisions, the Indentures provide that 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 and other action that such 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 such Indenture.
 
SUBORDINATION
 
    Unless otherwise provided in the applicable Prospectus Supplement,
Subordinated Securities will be subject to the following subordination
provisions.
 
    Upon any distribution to creditors of the Operating Partnership in a
liquidation, dissolution or reorganization, the payment of the principal of and
interest on any Subordinated Securities will be subordinated to the extent
provided in the applicable Indenture in right of payment to the prior payment in
full of all Senior Debt (as defined below), but the obligation of the Operating
Partnership to make payments of the principal of and interest on such
Subordinated Securities will not otherwise be affected. No payment of principal
or interest will be permitted to be made on Subordinated Securities at any time
if a default on Senior Debt exists that permits the holders of such Senior Debt
to accelerate its maturity and the default is the subject of judicial
proceedings or the Operating Partnership receives notice of the default. After
all Senior Debt is paid in full and until the Subordinated Securities are paid
in full, holders will be subrogated to the rights of holders of Senior Debt to
the extent that distributions otherwise payable to holders have been applied to
the payment of Senior Debt. The Subordinated Indenture will not restrict the
amount of Senior Debt or other indebtedness of the Operating Partnership and its
subsidiaries. As a result of these subordination provisions, in the event of a
distribution of assets upon insolvency, holders of Subordinated Securities may
recover less, ratably, than general creditors of the Operating Partnership.
 
    Senior Debt will be defined in the applicable Indenture as the principal of
and interest on, or substantially similar payments to be made by the Operating
Partnership in respect of, the following, whether outstanding at the date of
execution of the applicable Indenture or thereafter incurred, created or
assumed: (i) indebtedness of the Operating Partnership for money borrowed or
represented by purchase-money obligations; (ii) indebtedness of the Operating
Partnership evidenced by notes, debentures, bonds, or other securities issued
under the provisions of an indenture, fiscal agency agreement or other
agreement; (iii) obligations of the Operating Partnership as lessee under leases
of property either made as part of any sale and leaseback transaction to which
the Operating Partnership is a party or otherwise; (iv) indebtedness,
obligations and liabilities of others in respect of which the Operating
Partnership is liable contingently or otherwise to pay or advance money or
property or as guarantor, endorser or
 
                                       18
<PAGE>
otherwise or which the Operating Partnership has agreed to purchase or otherwise
acquire; and (v) any binding commitment of the Operating Partnership to fund any
real estate investment or to fund any investment in any entity making such real
estate investment, in each case other than (A) any such indebtedness, obligation
or liability referred to in clauses (i) through (iv) above as to which, in the
instrument creating or evidencing the same pursuant to which the same is
outstanding, it is provided that such indebtedness, obligation or liability is
not superior in right of payment to the Subordinated Securities or ranks PARI
PASSU with the Subordinated Securities; (B) any such indebtedness, obligation or
liability which is subordinated to indebtedness of the Operating Partnership to
substantially the same extent as or to a greater extent than the Subordinated
Securities are subordinated; and (C) the Subordinated Securities. There will not
be any restrictions in any Indenture relating to Subordinated Securities upon
the creation of additional Senior Debt.
 
    If this Prospectus is being delivered in connection with a series of
Subordinated Securities, the accompanying Prospectus Supplement or the
information incorporated herein by reference will set forth the approximate
amount of Senior Debt outstanding as of the end of the Operating Partnership's
most recent fiscal quarter.
 
DISCHARGE, DEFEASANCE AND COVENANT DEFEASANCE
 
    Unless otherwise indicated in the applicable Prospectus Supplement, the
Operating Partnership will be permitted, at its option, to discharge certain
obligations to holders of any series of Debt Securities issued under any
Indenture that have not already been delivered to the applicable Trustee for
cancellation and that either have become due and payable or will become due and
payable within one year (or scheduled for redemption within one year) by
irrevocably depositing with the applicable 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.
 
    The Indentures provide that, unless otherwise indicated in the applicable
Prospectus Supplement, the Operating Partnership may elect either (i) to defease
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 hold moneys for payment in trust)
("defeasance"), or (ii) to be released from its obligations with respect to such
Debt Securities under the applicable Indenture (being the restrictions described
under "--Certain Covenants") or, if provided in the applicable Prospectus
Supplement, its obligations with respect to any other covenant, and any omission
to comply with such obligations shall not constitute an event of default with
respect to such Debt Securities ("covenant defeasance"), in either case upon the
irrevocable deposit by the Operating Partnership with the applicable Trustee, in
trust, of an 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 will only be permitted to be established if, among other
things, the Operating Partnership has delivered to the applicable Trustee an
opinion of counsel (as specified in the applicable 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.
 
                                       19
<PAGE>
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, will be
required to refer to and be based upon a ruling received from or published by
the Internal Revenue Service (the "IRS") or a change in applicable United States
Federal income tax law occurring after the date of the Indenture. In the event
of such defeasance, the holders of such Debt Securities would thereafter be able
to look only to such trust fund for payment of principal (and premium, if any)
and interest.
 
    "Government Obligations" means securities that 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, however that (except as
required by law) such custodian 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.
 
    Unless otherwise provided in the applicable Prospectus Supplement, if after
the Operating Partnership has deposited funds and/or Government Obligations to
effect defeasance or covenant defeasance with respect to Debt Securities of any
series, (i) the holder of a Debt Security of such series is entitled to, and
does, elect pursuant to the applicable 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 (ii) 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 will 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 they
become 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. "Conversion Event" means the cessation of use of (i) a currency, currency
unit or composite currency both by the government of the country which issued
such currency and for the settlement of transactions by a central bank or other
public institutions of or within the international banking community; (ii) the
ECU both within the European Monetary System and 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. 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 ceases to be used by its government of issuance shall be made in U.S.
dollars.
 
    In the event the Operating Partnership 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 (iv) under "--Events of Default, Notice and
Waiver" with respect to specified sections of an Indenture (which sections would
no longer be applicable to such Debt Securities) or described in clause (vii)
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
 
                                       20
<PAGE>
Obligations on deposit with the applicable 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 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 or within a particular series.
 
NO CONVERSION RIGHTS
 
    The Debt Securities will not be convertible into or exchangeable for any
shares of beneficial interest of the Company or any equity interest in the
Operating Partnership.
 
PAYMENT
 
    Unless otherwise specified in the applicable Prospectus Supplement, the
principal of (and applicable premium, if any) and interest on any series of Debt
Securities will be payable at the corporate trust office of the Trustee, the
address of which will be stated in the applicable Prospectus Supplement;
provided that, at the option of the Operating Partnership, payment of interest
may be made by check mailed to the address of the person entitled thereto as it
appears in the applicable register for such Debt Securities or by wire transfer
of funds to such person at an account maintained within the United States.
 
    All moneys 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 such principal,
premium or interest has become due and payable will be repaid to the Operating
Partnership, and the holder of such Debt Security thereafter may look only to
the Operating Partnership for payment thereof.
 
GLOBAL SECURITIES
 
    The Debt Securities of a series may be issued in whole or in part in the
form of one or more global securities (the "Global Securities") that will be
deposited with, or on behalf of, a depositary identified in the applicable
Prospectus Supplement relating to such series. Global Securities may be issued
in either registered or bearer form and in either temporary or permanent form.
The specific terms of the depositary arrangement with respect to a series of
Debt Securities will be described in the applicable Prospectus Supplement
relating to such series.
 
                                       21
<PAGE>
                        DESCRIPTION OF PREFERRED SHARES
 
    The description of the Company's Preferred Shares set forth below does not
purport to be complete and is qualified in its entirety by reference to the
Company's Amended and Restated Declaration of Trust (the "Declaration of Trust")
and Second Amended and Restated Bylaws (the "Bylaws"), as in effect.
 
GENERAL
 
    Under the Declaration of Trust, the Company has authority to issue up to
161,000,000 shares of beneficial interest, consisting of 100,000,000 Common
Shares, par value $.01 per share, 51,000,000 excess shares of beneficial
interest, par value $.01 per share ("Excess Shares"), and 10,000,000 Preferred
Shares, par value $.01 per share. At July 24, 1997, the Company had outstanding
4,600,000 shares of 8.30% Series A Cumulative Redeemable Preferred Shares. No
other Preferred Shares were outstanding as of the date of this Prospectus.
Preferred Shares may be issued from time to time, in one or more series, as
authorized by the Board of Trustees of the Company. Prior to issuance of shares
of each series, the Board of Trustees is required by the Maryland General
Corporation Law ("MGCL") and the Company's Declaration of Trust to fix for each
series, subject to the provisions of the Company's Declaration of Trust
regarding Excess Shares, the terms, preferences, conversion or other rights,
voting powers, restrictions, limitations as to dividends or other distributions,
qualifications and terms or conditions of redemption, as are permitted by
Maryland law. The Preferred Shares will, when issued, be fully paid and
nonassessable and will have no preemptive rights. The Board of Trustees could
authorize the issuance of Preferred Shares with terms and conditions that could
have the effect of discouraging a takeover or other transaction that holders of
Common Shares might believe to be in their best interests or in which holders of
some, or a majority, of the Common Shares might receive a premium for their
shares over the then market price of such Common Shares.
 
TERMS
 
    The following description of the Preferred Shares sets forth the material
terms and provisions of the Preferred Shares to which any Prospectus Supplement
may relate. The statements below describing the Preferred Shares are in all
respects subject to and qualified in their entirety by reference to the
applicable provisions of the Company's Declaration of Trust and Bylaws and any
applicable amendment to the Declaration of Trust designating terms of a series
of Preferred Shares (a "Designating Amendment").
 
    Reference is made to the Prospectus Supplement relating to the Preferred
Shares offered thereby for specific terms, including:
 
    (1) The title and stated value of such Preferred Shares;
 
    (2) The number of Preferred Shares offered, the liquidation preference per
share and the offering price of such Preferred Shares;
 
    (3) The dividend rate(s), period(s) and/or payment date(s) or method(s) of
calculation thereof applicable to such Preferred Shares;
 
    (4) The date from which dividends on such Preferred Shares shall accumulate,
if applicable;
 
    (5) The procedures for any auction and remarketing, if any, for such
Preferred Shares;
 
    (6) The provision for a sinking fund, if any, for such Preferred Shares;
 
    (7) The provision for redemption, if applicable, of such Preferred Shares;
 
    (8) Any listing of such Preferred Shares on any securities exchange;
 
    (9) The terms and conditions, if applicable, upon which such Preferred
Shares will be convertible into Common Shares, including the conversion price or
rate (or manner of calculation thereof);
 
                                       22
<PAGE>
    (10) Any other specific terms, preferences, rights, limitations or
restrictions of such Preferred Shares;
 
    (11) A discussion of Federal income tax considerations applicable to such
Preferred Shares;
 
    (12) The relative ranking and preference of such Preferred Shares as to
dividend rights and rights upon liquidation, dissolution or winding up of the
affairs of the Company;
 
    (13) Any limitations on issuance of any series of Preferred Shares ranking
senior to or on a parity with such series of Preferred Shares as to dividend
rights and rights upon liquidation, dissolution or winding up of the affairs of
the Company; and
 
    (14) 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.
 
RANK
 
    Unless otherwise specified in the Prospectus Supplement, the Preferred
Shares 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 Shares of the Company, and to all equity securities ranking
junior to such Preferred Shares with respect to dividend rights or 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 Shares with
respect to dividend 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 Shares with respect to dividend rights or rights upon
liquidation, dissolution or winding up of the Company. The term "equity
securities" does not include convertible debt securities.
 
DIVIDENDS
 
    Holders of the Preferred Shares of each series will be entitled to receive,
when, as and if declared by the Board of Trustees of the Company, out of assets
of the Company legally available for payment, cash dividends at such rates and
on such dates as will be set forth in the applicable Prospectus Supplement. Each
such dividend shall be payable to holders of record as they appear on the share
transfer books of the Company on such record dates as shall be fixed by the
Board of Trustees of the Company.
 
    Dividends on any series of the Preferred Shares may be cumulative or
non-cumulative, as provided in the applicable Prospectus Supplement. Dividends,
if cumulative, will be cumulative from and after the date set forth in the
applicable Prospectus Supplement. If the Board of Trustees of the Company fails
to declare a dividend payable on a dividend payment date on any series of the
Preferred Shares for which dividends are non-cumulative, then the holders of
such series of the Preferred Shares will have no right to receive a dividend in
respect of the dividend period ending on such dividend payment date, and the
Company will have no obligation to pay the dividend accrued for such period,
whether or not dividends on such series are declared payable on any future
dividend payment date.
 
    If Preferred Shares of any series are outstanding, no dividends will be
declared or paid or set apart for payment on any shares of beneficial interest
of the Company of any other series ranking, as to dividends, on a parity with or
junior to the Preferred Shares of such series for any period unless (i) if such
series of Preferred Shares has a cumulative dividend, full cumulative dividends
have been or contemporaneously are declared and paid or declared and a sum
sufficient for the payment thereof is set apart for such payment on the
Preferred Shares of such series for all past dividend periods and the then
current dividend period; or (ii) if such series of Preferred Shares does not
have a cumulative dividend, full dividends for the then current dividend period
have been or contemporaneously are declared and paid or declared and a sum
sufficient for the payment thereof is set apart for such payment on the
Preferred Shares of such series. When dividends are not paid in full (or a sum
sufficient for such full payment is not so set apart) upon Preferred Shares of
any series and the shares of any other series of Preferred Shares ranking on a
parity as
 
                                       23
<PAGE>
to dividends with the Preferred Shares of such series, all dividends declared
upon Preferred Shares of such series and any other series of Preferred Shares
ranking on a parity as to dividends with such Preferred Shares shall be declared
pro rata so that the amount of dividends declared per share of Preferred Shares
of such series and such other series of Preferred Shares shall in all cases bear
to each other the same ratio that accrued dividends per share on the Preferred
Shares of such series (which shall not include any accumulation in respect of
unpaid dividends for prior dividend periods if such Preferred Shares does not
have a cumulative dividend) and such other series of Preferred Shares bear to
each other. No interest, or sum of money in lieu of interest, shall be payable
in respect of any dividend payment or payments on Preferred Shares of such
series which may be in arrears.
 
    Except as provided in the immediately preceding paragraph, unless (i) if
such series of Preferred Shares has a cumulative dividend, full cumulative
dividends on the Preferred Shares of such series have been or contemporaneously
are declared and paid or declared and a sum sufficient for the payment thereof
is set apart for payment for all past dividend periods and the then current
dividend period; and (ii) if such series of Preferred Shares does not have a
cumulative dividend, full dividends on the Preferred Shares of such series have
been or contemporaneously are declared and paid or declared and a sum sufficient
for the payment thereof is set apart for payment for the then current dividend
period, no dividends (other than in Common Shares or other shares of beneficial
interest ranking junior to the Preferred Shares of such series as to dividends
and upon liquidation) shall be declared or paid or set aside for payment nor
shall any other distribution be declared or made upon the Common Shares, or any
other shares of beneficial interest of the Company ranking junior to or on a
parity with the Preferred Shares of such series as to dividends or upon
liquidation, nor shall any Common Shares, or any other shares of beneficial
interest of the Company ranking junior to or on a parity with the Preferred
Shares of such series as to dividends or 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 shares) by the
Company (except by conversion into or exchange for other shares of beneficial
interest of the Company ranking junior to the Preferred Shares of such series as
to dividends and upon liquidation).
 
    Any dividend payment made on a series of Preferred Shares shall first be
credited against the earliest accrued but unpaid dividend due with respect to
shares of such series which remain payable.
 
REDEMPTION
 
    If so provided in the applicable Prospectus Supplement, the Preferred Shares
will be subject to mandatory redemption or redemption at the option of the
Company, as a whole or in part, in each case upon the terms, at the times and at
the redemption prices set forth in such Prospectus Supplement.
 
    The Prospectus Supplement relating to a series of Preferred Shares that is
subject to mandatory redemption will specify the number of such Preferred Shares
that shall be redeemed by the Company in each year commencing after a date to be
specified, at a redemption price per share to be specified, together with an
amount equal to all accrued and unpaid dividends thereon (which shall not, if
such Preferred Shares do not have a cumulative dividend, include any
accumulation in respect of unpaid dividends for prior dividend periods) to the
date of redemption. The redemption price may be payable in cash or other
property, as specified in the applicable Prospectus Supplement. If the
redemption price for Preferred Shares of any series is payable only from the net
proceeds of the issuance of shares of beneficial interest of the Company, the
terms of such Preferred Shares may provide that, if no such shares of beneficial
interest shall have been issued or to the extent the net proceeds from any
issuance are insufficient to pay in full the aggregate redemption price then
due, such Preferred Shares shall automatically and mandatorily be converted into
the applicable shares of beneficial interest of the Company pursuant to
conversion provisions specified in the applicable Prospectus Supplement.
 
    Notwithstanding the foregoing, unless (i) if a series of Preferred Shares
has a cumulative dividend, full cumulative dividends on all Preferred Shares of
such series shall have been or contemporaneously are
 
                                       24
<PAGE>
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; and (ii) if a series of Preferred Shares does not have a cumulative
dividend, full dividends on all of the Preferred Shares of such series have been
or contemporaneously are declared and paid or declared and a sum sufficient for
the payment thereof set apart for payment for the then current dividend period,
no Preferred Shares of such series shall be redeemed unless all outstanding
Preferred Shares of such series are simultaneously redeemed; provided, however,
that the foregoing shall not prevent the purchase or acquisition of Preferred
Shares of such series to preserve the REIT status of the Company or pursuant to
a purchase or exchange offer made on the same terms to holders of all
outstanding Preferred Shares of such series. In addition, unless (i) if such
series of Preferred Shares has a cumulative dividend, full cumulative dividends
on all outstanding shares of such series of Preferred Shares 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; and (ii) if such series of Preferred Shares does not
have a cumulative dividend, full dividends on the Preferred Shares of such
series have been or contemporaneously are declared and paid or declared and a
sum sufficient for the payment thereof set apart for payment for the then
current dividend period, the Company shall not purchase or otherwise acquire
directly or indirectly any Preferred Shares of such series (except by conversion
into or exchange for shares of beneficial interest of the Company ranking junior
to the Preferred Shares of such series as to dividends and upon liquidation);
provided, however, that the foregoing shall not prevent the purchase or
acquisition of Preferred Shares of such series to preserve the REIT status of
the Company or pursuant to a purchase or exchange offer made on the same terms
to holders of all outstanding Preferred Shares of such series.
 
    If fewer than all of the outstanding Preferred Shares of any series 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 or for which
redemption is requested by such holder (with adjustments to avoid redemption of
fractional shares) or by any other equitable manner determined by the Company.
 
    Notice of redemption will be mailed at least 30 days but not more than 60
days before the redemption date to each holder of record of Preferred Shares of
any series to be redeemed 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 and series of the Preferred Shares to be redeemed; (iii) the
redemption price; (iv) the place or places where certificates for such Preferred
Shares are to be surrendered for payment of the redemption price; (v) that
dividends on the shares to be redeemed will cease to accrue on such redemption
date; and (vi) the date upon which the holder's conversion rights, if any, as to
such shares shall terminate. If fewer than all the Preferred Shares of any
series are to be redeemed, the notice mailed to each such holder thereof shall
also specify the number of Preferred Shares to be redeemed from each such
holder. If notice of redemption of any Preferred Shares 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 any Preferred Shares so called for
redemption, then from and after the redemption date dividends will cease to
accrue on such Preferred Shares, and all rights of the holders of such shares
will terminate, except the right to receive the redemption price.
 
LIQUIDATION PREFERENCE
 
    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 Shares or any other class or series of shares
of beneficial interest of the Company ranking junior to the Preferred Shares in
the distribution of assets upon any liquidation, dissolution or winding up of
the Company, the holders of each series of Preferred Shares shall be entitled to
receive out of assets of the Company legally available for distribution to
shareholders liquidating distributions in the amount of the liquidation
preference per share, if any, set forth in the applicable Prospectus Supplement,
plus an amount equal to all
 
                                       25
<PAGE>
dividends accrued and unpaid thereon (which shall not include any accumulation
in respect of unpaid noncumulative dividends for prior dividend periods). After
payment of the full amount of the liquidating distributions to which they are
entitled, the holders of Preferred Shares 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 liquidating distributions
on all outstanding Preferred Shares and the corresponding amounts payable on all
other classes or series of shares of beneficial interest of the Company ranking
on a parity with the Preferred Shares in the distribution of assets, then the
holders of the Preferred Shares and all other such classes or series of shares
of beneficial interest shall share ratably in any such distribution of assets in
proportion to the full liquidating distributions to which they would otherwise
be respectively entitled.
 
    If liquidating distributions shall have been made in full to all holders of
Preferred Shares, the remaining assets of the Company shall be distributed among
the holders of any other classes or series of shares of beneficial interest
ranking junior to the Preferred Shares upon liquidation, dissolution or winding
up, according to their respective rights and preferences and in each case
according to their respective number of shares. For such purposes, the
consolidation or merger of the Company with or into any other corporation, trust
or 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.
 
VOTING RIGHTS
 
    Holders of the Preferred Shares will not have any voting rights, except as
set forth below or as otherwise from time to time required by law or as
indicated in the applicable Prospectus Supplement.
 
    Unless provided otherwise for any series of Preferred Shares, so long as any
Preferred Shares of a series remain outstanding, the Company will not, without
the affirmative vote or consent of the holders of at least two-thirds of the
Preferred Shares of such series outstanding at the time, given in person or by
proxy, either in writing or at a meeting (such series voting separately as a
class), (i) authorize or create, or increase the authorized or issued amount of,
any class or series of shares of beneficial interest ranking prior to such
series of Preferred Shares with respect to payment of dividends or the
distribution of assets upon liquidation, dissolution or winding up or reclassify
any authorized shares of beneficial interest of the Company into such shares, or
create, authorize or issue any obligation or security convertible into or
evidencing the right to purchase any such shares; or (ii) amend, alter or repeal
the provisions of the Company's Declaration of Trust or the Designating
Amendment for such series of Preferred Shares, whether by merger, consolidation
or otherwise (an "Event"), so as to materially and adversely affect any right,
preference, privilege or voting power of such series of Preferred Shares or the
holders thereof; provided, however, with respect to the occurrence of any of the
Events set forth in (ii) above, so long as the Preferred Shares remain
outstanding with the terms thereof materially unchanged, taking into account
that upon the occurrence of an Event the Company may not be the surviving
entity, the occurrence of any such Event shall not be deemed to materially and
adversely affect such rights, preferences, privileges or voting power of holders
of Preferred Shares, and provided further that (A) any increase in the amount of
the authorized Preferred Shares or the creation or issuance of any other series
of Preferred Shares, or (B) any increase in the amount of authorized shares of
such series or any other series of Preferred Shares, in each case ranking on a
parity with or junior to the Preferred Shares of such series with respect to
payment of dividends or the distribution of assets upon liquidation, dissolution
or winding up, shall not be deemed to materially and adversely affect such
rights, preferences, privileges or voting powers.
 
    The foregoing voting provisions will not apply if, at or prior to the time
when the act with respect to which such vote would otherwise be required shall
be effected, all outstanding shares of such series of Preferred Shares shall
have been redeemed or called for redemption and sufficient funds shall have been
deposited in trust to effect such redemption.
 
                                       26
<PAGE>
CONVERSION RIGHTS
 
    The terms and conditions, if any, upon which any series of Preferred Shares
is convertible into Common Shares will be set forth in the applicable Prospectus
Supplement relating thereto. Such terms will include the number of Common Shares
into which the Preferred Shares are convertible, the conversion price or rate
(or manner of calculation thereof), the conversion period, provisions as to
whether conversion will be at the option of the holders of the Preferred Shares
or the Company, the events requiring an adjustment of the conversion price and
provisions affecting conversion in the event of the redemption of such series of
Preferred Shares.
 
RESTRICTIONS ON OWNERSHIP
 
    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
shares of beneficial interest may be owned, directly or indirectly, by five or
fewer individuals (as defined in the Code to include certain entities) during
the last half of a taxable year. To assist the Company in meeting this
requirement, the Company may take certain actions to limit the beneficial
ownership, directly or indirectly, by a single person of the Company's
outstanding equity securities, including any Preferred Shares of the Company.
Therefore, the Designating Amendment for each series of Preferred Shares may
contain provisions restricting the ownership and transfer of the Preferred
Shares. The applicable Prospectus Supplement will specify any additional
ownership limitation relating to a series of Preferred Shares. See "Limits on
Ownership of Shares of Beneficial Interest."
 
TRANSFER AGENT
 
    The transfer agent and registrar for the Preferred Shares will be set forth
in the applicable Prospectus Supplement.
 
                          DESCRIPTION OF COMMON SHARES
 
    The description of the Company's Common Shares set forth below does not
purport to be complete and is qualified in its entirety by reference to the
Company's Declaration of Trust and Bylaws, as in effect.
 
GENERAL
 
    Under the Declaration of Trust, the Company has authority to issue
100,000,000 Common Shares, par value $.01 per share. At July 24, 1997, the
Company had outstanding 19,433,076 Common Shares. In addition, on such date
3,528,232 Units were outstanding (other than those held directly or indirectly
by the Company) and may be exchanged for Common Shares on a one-for-one basis.
All Common Shares offered hereby will, when issued, be duly authorized, fully
paid and nonassessable.
 
TERMS
 
    The following description of the Company's Common Shares sets forth the
material terms and provisions of the Common Shares to which any Prospectus
Supplement may relate. Subject to the preferential rights of any other shares or
series of shares of beneficial interest and to the provisions of the Company's
Declaration of Trust regarding Excess Shares, holders of Common Shares will be
entitled to receive distributions on Common Shares if, as and when authorized
and declared by the Board of Trustees of the Company out of assets legally
available therefor and to share ratably in the assets of the Company legally
available for distribution to its shareholders in the event of its liquidation,
dissolution or winding-up after payment of, or adequate provision for, all known
debts and liabilities of the Company.
 
    Subject to the provisions of the Company's Declaration of Trust regarding
Excess Shares, each outstanding Common Share entitles the holder to one vote on
all matters submitted to a vote of
 
                                       27
<PAGE>
shareholders, including the election of trustees, and, except as otherwise
required by law or except as provided with respect to any other class or series
of shares of beneficial interest, the holders of Common Shares will possess
exclusive voting power. There is no cumulative voting in the election of
trustees, which means that the holders of a majority of the outstanding Common
Shares can elect all of the trustees then standing for election, and the holders
of the remaining Common Shares will not be able to elect any trustee.
 
    Holders of Common Shares have no conversion, sinking fund or redemption
rights, or preemptive rights to subscribe for any securities of the Company.
 
    Subject to the provisions of the Company's Declaration of Trust regarding
Excess Shares, all Common Shares will have equal dividend, distribution,
liquidation and other rights, and will have no preference, appraisal or exchange
rights.
 
    The Company's Declaration of Trust provides that the Company cannot merge
with or sell all or substantially all of the assets of the Company, except
pursuant to a resolution approved by shareholders holding a majority of the
shares entitled to vote on the resolution. In addition, the partnership
agreement of the Operating Partnership requires that any merger or sale of all
or substantially all of the assets of the Operating Partnership be approved by
partners holding 75% of the Units.
 
RESTRICTIONS ON OWNERSHIP
 
    For the Company to qualify as a REIT under the Code, not more than 50% in
value of its outstanding shares of beneficial interest may be owned, directly or
indirectly, by five or fewer individuals (as defined in the Code to include
certain entities) during the last half of a taxable year. To assist the Company
in meeting this requirement, the Company may take certain actions to limit the
beneficial ownership, directly or indirectly, by a single person of the
Company's outstanding equity securities. See "Limits on Ownership of Shares of
Beneficial Interest."
 
TRANSFER AGENT
 
    The transfer agent and registrar for the Common Shares is BankBoston, N.A.,
Boston, Massachusetts.
 
                            DESCRIPTION OF WARRANTS
 
    The Company has no Warrants or other share purchase rights outstanding
(other than options issued under the Company's Second Amended and Restated 1994
Share Option and Incentive Plan, as amended). The Company may issue Warrants for
the purchase of Preferred Shares or Common Shares. Warrants may be issued
independently, together with any other Securities offered by any Prospectus
Supplement or through a dividend or other distribution to the Company's
shareholders and may be attached to or separate from such Securities. Warrants
may be issued under a 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 a particular
series and will not assume any obligation or relationship of agency or trust for
or with any holders or beneficial owners of Warrants. The following sets forth
certain general terms and provisions of the Warrants offered hereby. Further
terms of the Warrants and the applicable Warrant Agreement 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, number and terms of the Preferred Shares or Common
Shares purchasable upon exercise of such Warrants; (5) the designation and terms
of the other Securities, if any, with which such Warrants are issued and the
number of such Warrants issued with each such Security: (6) the date, if any,
 
                                       28
<PAGE>
on and after which such warrants and the related Preferred Shares or Common
Shares, if any, will be separately transferable; (7) the price at which each
Preferred Share or Common Share 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
transferability, exchange and exercise of such Warrants.
 
              LIMITS ON OWNERSHIP OF SHARES OF BENEFICIAL INTEREST
 
    For the Company to qualify as a REIT under the Code, among other things, not
more than 50% in value of its outstanding shares of beneficial interest may be
owned, directly or indirectly, by five or fewer individuals (defined in the Code
to include certain entities) during the last half of a taxable year (other than
the first year), and such shares of beneficial interest must be beneficially
owned by 100 or more persons during at least 335 days of a taxable year of 12
months (other than the first year) or during a proportionate part of a shorter
taxable year. In order to protect the Company against the risk of losing its
status as a REIT due to a concentration of ownership among its shareholders, the
Declaration of Trust provides that no holder (other than persons approved by the
trustees at their option and in their discretion) may own, or be deemed to own
by virtue of the attribution provisions of the Code, more than 9.8% (the
"Ownership Limit") of the Company's shares of beneficial interest. The Board of
Trustees does not expect that it would waive the Ownership Limit in the absence
of the ruling from the IRS or an opinion of counsel satisfactory to it that the
changes in ownership will not then or in the future jeopardize the Company's
status as a REIT. Any transfer of shares of beneficial interest (including
warrants) or any security convertible into shares of beneficial interest that
would create a direct or indirect ownership of shares of beneficial interest in
excess of the Ownership Limit or that would result in the disqualification of
the Company as a REIT, including any transfer that results in the shares of
beneficial interest being owned by fewer than 100 persons or that results in the
Company being "closely held" within the meaning of Section 856(h) of the Code,
shall be null and void, and the intended transferee will acquire no rights to
the shares of beneficial interest. The foregoing restrictions on transferability
and ownership will not apply if the Board of Trustees determines that it is no
longer in the best interests of the Company to attempt to qualify, or to
continue to qualify, as a REIT. In addition, the foregoing restrictions do not
apply with respect to an offeror in the event of an all cash tender offer by it
which has been accepted by at least two-thirds of the Company's outstanding
shares.
 
    Shares of beneficial interest owned, or deemed to be owned, or transferred
to a shareholder in excess of the Ownership Limit will automatically be
exchanged for Excess Shares that will be transferred, by operation of law, to
the Company as trustee of a trust for the exclusive benefit of the transferees
to whom such shares of beneficial interest may be ultimately transferred without
violating the Ownership Limit. While the Excess Shares are held in trust, they
will not be entitled to vote, they will not be considered for purposes of any
shareholder vote or the determination of a quorum for such vote, and, except
upon liquidation, they will not be entitled to participate in dividends or other
distributions. Any dividend or distribution paid to a proposed transferee of
Excess Shares prior to the discovery by the Company that shares of beneficial
interest have been transferred in violation of the provisions of the Company's
Declaration of Trust shall be repaid to the Company upon demand. The Excess
Shares are not treasury shares, but rather constitute a separate class of issued
and outstanding shares of beneficial interest of the Company. The original
transferee-shareholder may, at any time the Excess Shares are held by the
Company in trust, transfer the interest in the trust representing the Excess
Shares to any individual whose ownership of the shares of beneficial interest
exchanged into such Excess Shares would be permitted under the Ownership Limit,
at a price not in excess of the price paid by the original
transferee-shareholder for the shares of beneficial interest that were exchanged
for Excess Shares. Immediately upon the transfer to the permitted transferee,
the Excess Shares will automatically be exchanged for shares of beneficial
 
                                       29
<PAGE>
interest of the class from which they were converted. If the foregoing transfer
restrictions are determined to be void or invalid by virtue of any legal
decision, statute, rule or regulation, then the intended transferee of any
Excess Shares may be deemed, at the option of the Company, to have acted as an
agent on behalf of the Company in acquiring the Excess Shares and to hold the
Excess Shares on behalf of the Company.
 
    In addition to the foregoing transfer restrictions, the Company will have
the right, for a period of 90 days during the time any Excess Shares are held by
the Company in trust, to purchase all or any portion of the Excess Shares from
the original transferee-shareholder for the lesser of the price paid for the
shares of beneficial interest by the original transferee-shareholder or the
market price (as determined in the manner set forth in the Declaration of Trust)
of the shares of beneficial interest on the date the Company exercises its
option to purchase. The 90-day period begins on the date of the violative
transfer if the original transferee-shareholder gives notice to the Company of
the transfer or, if no such notice is given, the date the Board of Trustees
determines that a violative transfer has been made.
 
    Every owner of more than 5% (or such lower percentage as required by the
Code or regulations thereunder) of the issued and outstanding Common Shares must
file a written notice with the Company containing the information specified in
the Declaration of Trust no later than January 30 of each year. Each shareholder
shall upon demand be required to disclose to the Company in writing any
information with respect to the direct, indirect and constructive ownership of
beneficial interests as the Board of Trustees deems necessary to comply with the
provisions of the Code applicable to REITs, to comply with the requirements of
any taxing authority or governmental agency or to determine any such compliance.
 
    This ownership limitation may have the effect of precluding acquisition of
control of the Company unless the Board of Trustees determines that maintenance
of REIT status is no longer in the best interests of the Company.
 
                                       30
<PAGE>
                   CERTAIN PROVISIONS OF MARYLAND LAW AND OF
                 THE COMPANY'S DECLARATION OF TRUST AND BYLAWS
 
    The following summary of certain provisions of Maryland law and the
Company's Declaration of Trust and Bylaws does not purport to be complete and is
qualified by reference to Maryland law and the Company's Declaration of Trust
and Bylaws.
 
MARYLAND BUSINESS COMBINATION STATUTE
 
    The MGCL establishes special requirements with respect to "business
combinations" between Maryland corporations and "interested shareholders" unless
exemptions are applicable. Among other things, the law prohibits for a period of
five years a merger and other specified or similar transactions between a
company and an interested shareholder and requires a supermajority vote for such
transactions after the end of the five-year period.
 
    "Interested shareholders" are all persons owning beneficially, directly or
indirectly, more than 10% of the outstanding voting stock of the Maryland
corporation. "Business combinations" include any merger or similar transaction
subject to a statutory vote and additional transactions involving transfers of
assets or securities in specified amounts to interested shareholders or their
affiliates. Unless an exemption is available, transactions of these types may
not be consummated between a Maryland corporation and an interested shareholder
or its affiliates for a period of five years after the date on which the
shareholder first became an interested shareholder. Thereafter, the transaction
may not be consummated unless recommended by the Board of Trustees and approved
by the affirmative vote of at least 80% of the votes entitled to be cast by all
holders of outstanding voting shares and 66 2/3% of the votes entitled to be
cast by all holders of outstanding voting shares other than the interested
shareholder. A business combination with an interested shareholder that is
approved by the Board of Trustees of a Maryland corporation at any time before
an interested shareholder first becomes an interested shareholder is not subject
to the special voting requirements. An amendment to a Maryland corporation's
charter electing not to be subject to the foregoing requirements must be
approved by the affirmative vote of at least 80% of the votes entitled to be
cast by all holders of outstanding voting shares and 66 2/3% of the votes
entitled to be cast by holders of outstanding voting shares who are not
interested shareholders. Any such amendment is not effective until 18 months
after the vote of shareholders and does not apply to any business combination of
a corporation with a shareholder who was an interested shareholder on the date
of the shareholder vote.
 
MARYLAND CONTROL SHARE ACQUISITION STATUTE
 
    The MGCL provides that "control shares" of a Maryland REIT acquired in a
"control share acquisition" have no voting rights except to the extent approved
by a vote of two-thirds of the votes entitled to be cast on the matter,
excluding shares of beneficial interest owned by the acquiror or by officers of
trustees who are employees of the trust. "Control shares" are voting shares of
beneficial interest which, if aggregated with all other such shares of
beneficial interest previously acquired by the acquiror or in respect of which
the acquiror is able to exercise or direct the exercise of voting power (except
solely by revocable proxy), would entitle the acquiror to exercise voting power
in electing trustees within one of the following ranges of voting power: (i)
one-fifth or more but less than one-third, (ii) one-third or more but less than
a majority, or (iii) a majority of all voting power. Control shares do not
include shares of beneficial interest the acquiring person is then entitled to
vote as a result of having previously obtained shareholder approval. A "control
share acquisition" means the acquisition of control shares, subject to certain
exceptions.
 
    A person who has made or proposes to make a control share acquisition, upon
satisfaction of certain conditions (including an undertaking to pay expenses),
may compel the board of trustees to call a special meeting of shareholders to be
held within 50 days of demand to consider voting rights for the shares. If no
request for a meeting is made, the trust may itself present the question at any
shareholders meeting.
 
                                       31
<PAGE>
    If voting rights are not approved at the meeting or if the acquiring person
does not deliver an acquiring person statement as required by the statute, then,
subject to certain conditions and limitations, the trust may redeem any or all
of the control shares (except those for which voting rights have previously been
approved) for fair value determined, without regard to the absence of voting
rights for the control shares, as of the date of the last control share
acquisition by the acquiror or of any meeting of shareholders at which the
voting rights of such shares are considered and not approved. If voting rights
for control shares are approved at a shareholders meeting and the acquiror
becomes entitled to vote a majority of the shares of beneficial interest
entitled to vote, all other shareholders may exercise appraisal rights. The fair
value of the shares of beneficial interest as determined for purposes of such
appraisal rights may not be less than the highest price per share paid by the
acquiror in the control share acquisition.
 
    The control share acquisition statute does not apply to shares acquired in a
merger, consolidation or share exchange if the trust is a party to the
transaction, or to acquisitions approved or exempted by the declaration of trust
or bylaws of the trust.
 
    The business combination statute and the control share acquisition statute
could have the effect of discouraging offers to acquire the Company and of
increasing the difficulty of consummating any such offer.
 
LIMITATION OF SHAREHOLDER'S LIABILITY
 
    Under Maryland law, shareholders generally are not responsible for the
corporation's debts or obligations, and the Company's Declaration of Trust
specifically provides that no shareholder of the Company will be personally
liable for any obligations of the Company. The Company's Bylaws further provide
that the Company shall indemnify each shareholder against any claim or liability
to which the shareholder may become subject by reason of his or her being or
having been a shareholder, and that the Company shall reimburse each shareholder
for all legal and other expenses reasonably incurred by him or her in connection
with any such claim or liability. However, with respect to tort claims,
contractual claims where shareholder liability is not so negated, claims for
taxes and certain statutory liability, the shareholder may, in some
jurisdictions, including Texas, be personally liable to the extent that such
claims are not satisfied by the Company. Inasmuch as the Company will carry
public liability insurance which it considers adequate, any risk of personal
liability to shareholders is limited to situations in which the Company's assets
plus its insurance coverage would be insufficient to satisfy the claims against
the Company and its shareholders.
 
LIMITATION OF TRUSTEES' AND OFFICERS' LIABILITY
 
    Under Maryland law a REIT formed in Maryland is permitted to limit, by
provision in its declaration of trust, the liability of trustees and officers so
that no trustee or officer of the Company shall be liable to the Company or to
any shareholder for money damages except to the extent that (i) the trustee or
officer actually received an improper benefit in money, property, or services,
for the amount of the benefit or profit in money, property, or services actually
received, or (ii) a judgment or other final adjudication adverse to the trustee
or officer is entered in a proceeding based on a finding in a proceeding that
the trustee's or officer's action was the result of active and deliberate
dishonesty and was material to the cause of action adjudicated in the
proceeding. The Company's Declaration of Trust has incorporated the provisions
of such law limiting the liability of trustees and officers. GGPI's Articles of
Incorporation contain similar provisions that are consistent with Texas law.
 
    The Company's Bylaws require it to indemnify, to the full extent of Maryland
law, any present or former trustee or officer (and such person's spouse and
children) (an "Indemnitee") who is or was a party or threatened to be made a
party to any proceeding by reason of his or her service in that capacity,
against all expenses, judgments, fines and amounts paid in settlement actually
and reasonably incurred by him or
 
                                       32
<PAGE>
her in connection with the proceeding, provided that the Company shall have
received a written affirmation by the Indemnitee that he or she has met the
standard of conduct necessary for indemnification by the Company as authorized
by the Bylaws. The Company shall not be required to indemnify an Indemnitee if
(a) it is established that (i) the Indemnitee's act or omission was committed in
bad faith or was the result of active or deliberate dishonesty, (ii) the
Indemnitee actually received an improper personal benefit in money, property or
services or (iii) in the case of a criminal proceeding, the Indemnitee had
reasonable cause to believe that the Indemnitee's act or omission was unlawful,
(b) the proceeding was initiated by the Indemnitee, (c) the Indemnitee received
payment for such expenses pursuant to insurance or otherwise or (d) the
proceeding arises under Section 16 of the Securities Exchange Act of 1934, as
amended. Pursuant to the Bylaws, the Indemnitee is required to repay the amount
paid or reimbursed by the Company if it shall ultimately be determined that the
standard of conduct was not met. The Company's Bylaws also permit the Company to
provide such other and further indemnification or payment or reimbursement of
expenses as may be permitted by the MGCL or to which the Indemnitee may be
entitled. GGPI's bylaws contain similar provisions that are consistent with
Texas law.
 
INDEMNIFICATION AGREEMENTS
 
    Each of the Company's officers and trustees (the "Indemnitees") has entered
into an indemnification agreement with the Company, the Operating Partnership
and GGPI (the "Indemnitors"). The indemnification agreements require, among
other things, that the Indemnitors indemnify the Indemnitees to the fullest
extent permitted by law and advance to the Indemnitees all related expenses,
subject to reimbursement if it is subsequently determined that indemnification
is not permitted. Under these agreements, the Indemnitors also must indemnify
and advance all expenses incurred by Indemnitees seeking to enforce their rights
under the indemnification agreements, and cover the Indemnitees under the
Company's trustees' and officers' liability insurance. Although the form of
indemnification agreement offers substantially the same scope of coverage
afforded by provisions in the Declaration of Trust and the Bylaws, it provides
greater assurance to trustees and officers that indemnification will be
available because, as a contract, it cannot be modified unilaterally in the
future by the Board of Trustees or by the Company's shareholders to eliminate
the rights it provides.
 
                       FEDERAL INCOME TAX CONSIDERATIONS
 
    The following is a general summary of the material federal income tax
considerations associated with an investment in the Securities. The following
discussion is not exhaustive of all possible tax considerations and is not tax
advice. Moreover, this summary does not deal with all tax aspects that might be
relevant to a particular prospective shareholder in light of his/her personal
circumstances; nor does it deal with particular types of shareholders that are
subject to special treatment under the Code, such as insurance companies,
financial institutions and broker-dealers. The Code provisions governing the
Federal income tax treatment of REITs are highly technical and complex, and this
summary is qualified in its entirety by the applicable Code provisions, rules
and regulations promulgated thereunder, and administrative and judicial
interpretations thereof. The following discussion is based on current law and on
certain representations from the Company concerning its compliance with the
requirements for qualification as a REIT.
 
    EACH PROSPECTIVE INVESTOR IS URGED TO CONSULT HIS OR HER OWN TAX ADVISOR,
WITH RESPECT TO SUCH INVESTOR'S SPECIFIC FEDERAL, STATE, LOCAL, FOREIGN AND
OTHER TAX CONSEQUENCES OF THE PURCHASE, HOLDING AND SALE OF THE SECURITIES IN
THE COMPANY.
 
FEDERAL INCOME TAXATION OF THE COMPANY
 
    In the opinion of Goodwin, Procter & Hoar LLP, tax counsel to the Company,
commencing with the Company's first taxable year ended December 31, 1994, the
Company has been organized in conformity with the requirements for qualification
as a "real estate investment trust" under the Code, and its method
 
                                       33
<PAGE>
of operation will enable it to continue to meet the requirements for
qualification and taxation as a "real estate investment trust" under the Code,
provided that the Company operated and continues to operate in accordance with
various assumptions and factual representations made by the Company concerning
its business, properties and operations. No assurance can be given, however,
that such requirements have been or will continue to be met. Such qualification
depends upon the Company's having met and continuing to meet the various
requirements imposed under the Code through actual operating results, as
discussed below. Goodwin, Procter & Hoar LLP has relied on the Company's
representations regarding its operations and has not and will not review these
operating results. Accordingly, no assurance can be given that actual operating
results will meet these requirements.
 
    If the Company has qualified and continues to qualify for taxation as a
REIT, it generally will not be subject to federal corporate income taxes on that
portion of its ordinary income or capital gain that is currently distributed to
shareholders. The REIT provisions of the Code generally allow a REIT to deduct
dividends paid to its shareholders. This deduction for dividends paid to
shareholders substantially eliminates the federal "double taxation" on earnings
(once at the corporate level when earned and once again at the shareholder level
when distributed) that usually results from investments in a corporation.
 
    Even if the Company qualifies for taxation as a REIT, however, the Company
will be subject to Federal income tax, as follows: First, the Company will be
taxed at regular corporate rates on its undistributed REIT taxable income,
including undistributed net capital gains. Second, under certain circumstances,
the Company may be subject to the "alternative minimum tax." Third, if the
Company has net income from the sale or other disposition of "foreclosure
property" that is held primarily for sale to customers in the ordinary course of
business or other non-qualifying 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,
certain sales or other dispositions of property other than foreclosure property
held primarily for sale to customers in the ordinary course of business), such
income will be subject to a 100% tax. Fifth, if the Company should fail to
satisfy either the 75% or 95% gross income test (discussed below) but has
nonetheless maintained its qualification as a REIT because certain other
requirements have been met, it will be subject to a 100% tax on the net income
attributable to the greater of the amount by which the Company fails the 75% or
95% test, multiplied by a fraction intended to reflect the Company's
profitability. Sixth, if the Company fails to distribute during each year at
least the sum of (i) 85% of its ordinary income for such year, (ii) 95% of its
capital gain net income for such year and (iii) any undistributed taxable income
from prior periods, the Company will be subject to a 4% excise tax on the excess
of such required distribution over the amounts actually distributed. Seventh, if
the Company should acquire any asset from a C corporation (i.e., a corporation
generally subject to full corporate-level tax) in a carryover-basis transaction
and the Company subsequently recognizes gain on the disposition of such asset
during the ten-year period (the "Recognition Period") beginning on the date on
which the asset was acquired by the Company, then, to the extent of the excess
of (a) the fair market value of the asset as of the beginning of the applicable
Recognition Period over (b) the Company's adjusted basis in such asset as of the
beginning of such Recognition Period (the "Built-In Gain"), such gain will be
subject to tax at the highest regular corporate rate, pursuant to guidelines
issued by the IRS (the "Built-in Gain Rules").
 
REQUIREMENTS FOR QUALIFICATION
 
    The Company elected to be taxable as a REIT for its taxable year ended
December 31, 1994, and in order to have so qualified, it must have met and
continued to meet the requirements discussed below, relating to the Company's
organization, sources of income, nature of assets and distributions of income to
shareholders.
 
    ORGANIZATIONAL REQUIREMENTS.  The Code defines a REIT as a corporation,
trust or association: (i) that is managed by one or more trustees or directors,
(ii) the beneficial ownership of which is evidenced by transferable shares or by
transferable certificates of beneficial interest, (iii) that would be taxable as
a
 
                                       34
<PAGE>
domestic corporation but for the REIT requirements, (iv) that is neither a
financial institution nor an insurance company subject to certain provisions of
the Code, (v) the beneficial ownership of which is held by 100 or more persons,
and (vi) during the last half of each taxable year not more than 50% in value of
the outstanding stock of which is owned, directly or indirectly through the
application of certain attribution rules, by five or fewer individuals (as
defined in the Code to include certain entities). In addition, certain other
tests, described below, regarding the nature of its income and assets also must
be satisfied. The Code provides that conditions (i) through (iv), inclusive,
must be met during the entire taxable year and that condition (v) 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 (v) and
(vi) (the "100 shareholder" and "five or fewer" requirements) will not apply
until after the first taxable year for which an election is made to be taxed as
a REIT. For purposes of conditions (v) and (vi), pension funds and certain other
tax-exempt entities are treated as individuals, subject to a "look-through"
exception in the case of condition (vi).
 
    The Company's Declaration of Trust currently includes certain restrictions
regarding transfers of Common Shares and Preferred Shares, which restrictions
are intended (among other things) to assist the Company in continuing to satisfy
conditions (v) and (vi) above. In rendering its opinion that the Company is
organized and operated in a manner that has allowed the Company to qualify as a
REIT, Goodwin, Procter & Hoar LLP is relying on representations of the Company
that the ownership of its Common Shares and Preferred Shares will satisfy the
"five or fewer" requirement. There can be no assurance, however, that the
restrictions in the Declaration of Trust will, as a matter of law, preclude the
Company from failing to satisfy these conditions or that a transfer in violation
of these restrictions would not cause the Company to fail these conditions.
 
    In addition, a corporation may not elect to become a REIT unless its taxable
year is the calendar year. The Company has a calendar year taxable year.
 
    If a REIT owns a "qualified REIT subsidiary," the Code provides that the
qualified REIT subsidiary is disregarded for Federal income tax purposes, and
all assets, liabilities, and items of income, deduction and credit of the
qualified REIT subsidiary are treated as assets, liabilities and such items of
the REIT itself. A "qualified REIT subsidiary" is a corporation all of the
shares of beneficial interest of which have been owned by the REIT from the
commencement of such corporation's existence. GGPI, the general partner of the
Operating Partnership and certain other entities organized to serve as the
general partner of special purpose limited partnerships are "qualified REIT
subsidiaries". Thus, all of the assets, liabilities, and items of income,
deduction and credit of GGPI and the other "qualified REIT subsidiaries" will be
treated as assets and liabilities and items of income, deduction and credit of
the Company. Unless the context requires otherwise, all references to the
"Company" in this "Federal Income Tax Considerations" section refer to Gables
Residential Trust and its qualified REIT subsidiaries, GGPI, Candlewood Gen Par,
Inc. and GRT Villas Gen Par, Inc., the successor to Candle Creek, Inc.
 
    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 (as determined based on the REIT's capital
interest in 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 the partnership shall retain the same character in
the hands of the REIT for purposes of Section 856 of the Code, including
satisfying the gross income tests and asset tests. Thus, the Company's
proportionate share of the assets, liabilities and items of income of the
Operating Partnership (including the Operating Partnership's share of the assets
and liabilities and items of income with respect to any partnership in which it
holds an interest, and any other entity taxable as a partnership for federal
income tax purposes in which it holds an interest) will be treated as assets,
liabilities and items of income of the Company for purposes of applying the
requirements described herein.
 
                                       35
<PAGE>
    INCOME TESTS.  To maintain qualification as a REIT, three gross income
requirements must be satisfied annually.
 
    - First, at least 75% of the Company's gross income, excluding gross income
      from certain dispositions of property held primarily for sale to customers
      in the ordinary course of a trade or business ("prohibited transactions"),
      for each taxable year must be derived directly or indirectly from
      investments relating to real property or mortgages on real property
      (including "rents from real property" and, in certain circumstances,
      interest) or from certain types of temporary investments.
 
    - Second, at least 95% of the Company's gross income (excluding gross income
      from prohibited transactions) for each taxable year must be derived from
      such real property investments and from dividends, interest and gain from
      the sale or disposition of stock or securities or from any combination of
      the foregoing.
 
    - Third, short-term gain from the sale or other disposition of stock or
      securities, gain from prohibited transactions and gain from the sale or
      other disposition of real property held for less than four years (apart
      from involuntary conversions and sales of foreclosure property) must
      represent less than 30% of the Company's gross income (including gross
      income from prohibited transactions) for each taxable year.
 
    Rents received or deemed to be received by the Company will qualify as
"rents from real property" in satisfying the gross income requirements for a
REIT described above only if several conditions are met.
 
    - First, the amount of rent generally must not be based in whole or in part
      on the income or profits of any person.
 
    - Second, the Code provides that rents received from a tenant will not
      qualify as "rents from real property" in satisfying the gross income tests
      if the REIT, or an owner of 10% or more of the REIT, directly or
      constructively owns 10% or more of such tenant (a "Related Party Tenant").
 
    - Third, if rent attributable to personal property, leased in connection
      with a lease of real property, is greater than 15% of the total rent
      received under the lease, then the portion of rent attributable to the
      personal property will not qualify as "rents from real property."
 
    - Finally, for rents to qualify as "rents from real property" the REIT must
      not operate or manage the property or furnish or render services to
      tenants, other than through an "independent contractor who is adequately
      compensated and from whom the REIT does not derive any income; provided,
      however, that a REIT may provide services with respect to its properties
      and the income will qualify as "rents from real property" if the services
      are "usually or customarily rendered" in connection with the rental of
      room or other space for occupancy only and are not otherwise considered
      "rendered to the occupant."
 
    The Company has not charged, and does not anticipate charging rent that is
based in whole or in part on the income or profits of any person. The Company
has not derived, and does not anticipate deriving, rent attributable to personal
property leased in connection with real property that exceeds 15% of the total
rents.
 
    The Company has provided and will provide certain services with respect to
the Communities. The Company believes that the services with respect to the
Communities that have been and will be provided by it are usually or customarily
rendered in connection with the rental of space for occupancy only and are not
otherwise rendered to particular tenants and therefore that the provision of
such services has not and will not cause rents received with respect to the
Communities to fail to qualify as rents from real property. The Company believes
that services with respect to the Communities that the Company believes may not
be provided by the Company directly without jeopardizing the qualification of
rent as "rents from real property" have been and will be performed by
independent contractors (which do not include the Management Companies, as
defined below).
 
                                       36
<PAGE>
    Generally the Management Company receives fees in consideration of the
performance of property management services with respect to properties owned by
third parties. Any such fee income is taxable to the Management Company.
 
    The Operating Partnership has received and may continue to receive certain
types of income with respect to the properties it owns that will not qualify for
the 30%, 75% or 95% gross income tests, including rent with respect to certain
apartment units leased to certain of the Management Companies (as defined
below), which constitutes non-qualifying rent from Related Party Tenants and
which does not qualify for the 75% and 95% gross income tests. In addition,
interest payments on the certain notes of the Management Companies held by the
Operating Partnership and dividends on the Operating Partnership's stock in the
Management Companies will not qualify under the 75% gross income test. The
Company believes, however, that the aggregate amount of such fees and other
non-qualifying income in any taxable year will not cause the Company to exceed
the limits on non-qualifying income under the REIT gross income tests.
 
    If the Company fails to satisfy one or both of the 75% or 95% gross income
test for any taxable year, it may nevertheless qualify as a REIT for that year
if it is eligible for relief under certain provisions of the Code. These relief
provisions will be generally available if (i) the Company's failure to meet
these tests was due to reasonable cause and not due to willful neglect, (ii) the
Company attaches a schedule of the sources of its income to its Federal income
tax return and (iii) any incorrect information on the 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. For example, if the Company fails to satisfy the gross income
tests because nonqualifying income that the Company intentionally incurs exceeds
the limits on such income, the IRS could conclude that the Company's failure to
satisfy the tests was not due to reasonable cause. As discussed above in
"Federal Income Tax Considerations--Federal Income Taxation of the Company,"
even if these relief provisions apply, a tax would be imposed with respect to
the excess net income. No similar mitigation provision provides relief if the
Company fails the 30% income test, and in such case, the Company will cease to
qualify as a REIT.
 
    ASSET TESTS.  At the close of each quarter of its taxable year, the Company
also must satisfy three tests relating to the nature and diversification of its
assets.
 
    - First, at least 75% of the value of the Company's total assets must be
      represented by real estate assets, cash, cash items and government
      securities.
 
    - Second, no more than 25% of the Company's total assets may be represented
      by securities other than those in the 75% asset class.
 
    - Third, of the investments included in the 25% asset class, the value of
      any one issuer's securities owned by the Company may not exceed 5% of the
      value of the Company's total assets (the "5% test"), and the Company may
      not own more than 10% of any one issuer's outstanding voting securities.
 
    The Operating Partnership owns 100% of the nonvoting stock and 1% of the
voting stock of certain corporations (the "Management Companies") which do not
qualify as "qualified REIT subsidiaries." By virtue of its ownership of limited
partnership units of the Operating Partnership ("Units"), the Company will be
considered to own its pro rata share of such stock. Neither the Company nor the
Operating Partnership, however, owns more than 1% of the voting securities of
any Management Company. In addition, the Company and its senior management do
not believe that the Company's pro rata share of the value of the securities of
any of the Management Companies exceeds 5% of the total value of the Company's
assets. The Company's belief is based in part upon its analysis of the estimated
value of the securities of the Management Companies owned by the Operating
Partnership relative to the estimated value of the other assets owned by the
Operating Partnership. No independent appraisals have been obtained to support
this conclusion. There can be no assurance that the IRS might not contend that
the
 
                                       37
<PAGE>
value of such securities of a Management Company held by the Company (through
the Operating Partnership) exceeds the 5% value limitation.
 
    The 5% test referred to above generally must be met for any quarter in which
the Company acquires securities of an issuer. Thus, the 5% value requirement
must be satisfied not only on the date the Company acquires equity and debt
securities of the Management Companies, but also each time the Company increases
its ownership of such securities of the Management Companies (including as a
result of increasing its interest in the Operating Partnership as limited
partners exercise their redemption rights). Although the Company plans to take
steps to ensure that it satisfies the 5% value test for any quarter with respect
to which retesting is to occur, there can be no assurance that such steps will
always be successful or will not require a reduction in the Company's overall
interest in a Management Company.
 
    After initially meeting the asset tests at the close of any quarter, the
Company will not lose its status as a REIT for failure to satisfy the asset
tests at the end of a later quarter solely by reason of changes in asset values.
If the failure to satisfy the asset tests results from an acquisition of
securities or other property during a quarter, the failure can be cured by
disposition of sufficient nonqualifying assets within 30 days after the close of
that quarter. The Company intends to maintain and believes that it has
maintained adequate records of the value of its assets to ensure compliance with
the asset tests and to take such other actions within 30 days after the close of
any quarter as may be required to cure any noncompliance.
 
    ANNUAL DISTRIBUTION REQUIREMENTS.  In order to be taxed as a REIT, the
Company is required to distribute dividends (other than capital gain dividends)
to its shareholders 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 Company's capital gain) and (ii) 95% of the net income, if
any, from foreclosure property in excess of the special tax on income from
foreclosure property, minus (b) the sum of certain items of non-cash income.
Such distribution 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
Federal income tax return for such year and if paid on or before the first
regular dividend payment after such declaration. Even if the Company satisfies
the foregoing distribution requirements, to the extent that the Company does not
distribute all of its net capital gain or "REIT taxable income" as adjusted, it
will be subject to tax thereon at regular capital gains or ordinary corporate
tax rates. Furthermore, if the Company should fail to distribute during each
calendar year at least the sum of (a) 85% of its ordinary income for that year,
(b) 95% of its capital gain net income for that year and (c) 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. In addition, during its Recognition Period, if the Company disposes
of any asset subject to the Built-In Gain Rules, the Company will be required,
pursuant to guidance issued by the IRS, to distribute at least 95% of the
Built-In Gain (after tax), if any, recognized on the disposition of the asset.
 
    The Company believes it has made and intends to continue to make timely
distributions sufficient to satisfy the annual distribution requirements. In
this regard, the Operating Partnership's partnership agreement authorizes GGPI,
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 expected that the Company's REIT taxable income has been and will be
less than its cash flow due to the allowance of depreciation and other non-cash
charges in computing REIT taxable income. Accordingly, the Company anticipates
that it will generally have sufficient cash or liquid assets to enable it to
satisfy the 95% distribution requirement. It is possible, however, that the
Company, from time to time, may not have sufficient cash or other liquid assets
to meet the 95% distribution requirement or to distribute such greater amount as
may be necessary to avoid income and excise taxation, due to timing differences
between (i) the actual receipt of income and the actual payment of deductible
expenses and (ii) the inclusion of such income and the deduction of such
expenses in arriving at taxable income of the
 
                                       38
<PAGE>
Company, or as a result of nondeductible expenses such as principal amortization
or capital expenditures in excess of noncash deductions. In the event that such
timing differences occur, the Company may find it necessary to arrange for
borrowings or, if possible, pay taxable stock dividends in order to meet the
dividend requirement.
 
    Under certain circumstances, the Company may be able to rectify a failure to
meet the distribution requirement for a year by paying "deficiency dividends" to
shareholders in a later year, which may be included in the Company's deduction
for dividends paid for the earlier year. Thus, the Company may be able to avoid
being taxed on amounts distributed as deficiency dividends. The Company will,
however, be required to pay interest based upon the amount of any deduction
taken for deficiency dividends.
 
    EARNINGS AND PROFITS.  Under recent final Treasury Regulations, the
existence of undistributed earnings and profits of a non-REIT predecessor
corporation at the close of the taxable year generally will preclude a successor
corporation from qualifying to be taxed as a REIT. In connection with the
Initial Offering, the Company acquired the assets of Wood Properties, Inc.
("Wood Properties"). The Company believes that as of the time of the acquisition
of the assets of Wood Properties by the Company, Wood Properties had no earnings
and profits for Federal income tax purposes. The Company's belief is based upon
a review of Wood Properties' tax returns, as well as a review of the minute
books of Wood Properties for such periods. Nothing came to the Company's
attention during the course of such reviews that would cause the Company to
believe that Wood Properties had undistributed C corporation earnings and
profits. If, as a result of an examination of Wood Properties' returns by the
IRS, it were determined that Wood Properties had undistributed earnings and
profits at the time of the Company's acquisition of its assets, the Company
believes that distributions to shareholders in 1994 in excess of current
earnings and profits likely would have been sufficient to distribute any such
accumulated earnings and profits that carried over from Wood Properties. In the
event that 1994 distributions were insufficient to distribute any such earnings
and profits, and the Company were unable to utilize the certain "deficiency
dividend" procedures in the Treasury Regulations, the Company would fail to
qualify as a REIT.
 
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 shareholders 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 current or accumulated
earnings and profits, all distributions to shareholders will be dividends,
taxable as ordinary income, and subject to certain limitations of the Code,
corporate distributees may be eligible for the dividends-received deduction.
Unless the Company is entitled to relief under specific 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 in all circumstances the Company would be entitled to
such statutory relief. For example, if the Company fails to satisfy the gross
income tests because nonqualifying income that the Company intentionally incurs
exceeds the limit on such income, the IRS could conclude that the Company's
failure to satisfy the tests was not due to reasonable cause.
 
TAXATION OF U.S. SHAREHOLDERS
 
    As used herein, the term "U.S. Shareholder" means a holder of Common Shares
and Preferred Shares that (for United States Federal income tax purposes) (a) is
a citizen or resident of the United States, (b) is a corporation, partnership or
other entity created or organized in or under the laws of the United States or
of any political subdivision thereof or (c) is an estate or trust, the income of
which is subject to United States Federal income taxation regardless of its
source. For any taxable year for which the Company qualifies for taxation as a
REIT, amounts distributed to taxable U.S. Shareholders will be taxed as follows.
 
                                       39
<PAGE>
    DISTRIBUTIONS GENERALLY.  Distributions to U.S. Shareholders (other than
capital gain dividends) will be taxable as dividends to the extent of the
Company's current or accumulated earnings and profits as determined for federal
income tax purposes. For purposes of determining whether distributions are out
of current or accumulated earnings and profits, the earnings and profits of the
Company will be allocated first to any of the Company's outstanding Preferred
Stock and then to the Company's Common Stock. Such dividends will be taxable to
the holders as ordinary income and will not be eligible for the dividends-
received deduction for corporations. To the extent that the Company makes a
distribution to a U.S. Shareholder in excess of current or accumulated earnings
and profits, the distribution will be treated first as a tax-free return of
capital with respect to the shares, reducing the U.S. Shareholder's tax basis in
the shares, and the distribution in excess of a U.S. Shareholder's tax basis in
the shares will be taxable as gain realized from the sale of the shares.
Dividends declared by the Company in October, November or December of any year
payable to a shareholder of record on a specified date in any such month shall
be treated as both paid by the Company and received by the shareholder on
December 31 of the year, provided that the dividend is actually paid by the
Company during January of the following calendar year. Shareholders may not
include on their own Federal income tax returns any tax losses of the Company.
 
    The Company will be treated as having sufficient earnings and profits to
treat as a dividend any distribution by the Company up to the amount required to
be distributed in order to avoid imposition of the 4% excise tax discussed in
"Federal Income Tax Considerations--Federal Income Taxation of the Company"
above. Moreover, any "deficiency dividend" will be treated as an ordinary or
capital gain dividend, as the case may be, regardless of the Company's earnings
and profits. As a result, shareholders may be required to treat certain
distributions that would otherwise result in a tax-free return of capital as
taxable dividends.
 
    CAPITAL GAIN DIVIDENDS.  Dividends to U.S. Shareholders that are properly
designated by the Company as capital gain dividends will be treated as long-term
capital gains (to the extent they do not exceed the Company's actual net capital
gain) for the taxable year without regard to the period for which the
shareholder has held his stock. However, corporate shareholders may be required
to treat up to 20% of certain capital gain dividends as ordinary income. Capital
gain dividends are not eligible for the dividends-received deduction for
corporations.
 
    PASSIVE ACTIVITY LOSS AND INVESTMENT INTEREST LIMITATIONS.  Distributions
from the Company and gain from the disposition of the Securities will not be
treated as passive activity income, and therefore shareholders may not be able
to apply any "passive losses" against such income. Dividends from the Company
(to the extent they do not constitute a return of capital) will generally be
treated as investment income for purposes of the investment income limitation on
the deductibility of investment interest; provided, however, that net capital
gain from the disposition of the Securities or capital gain dividends generally
will be excluded from investment income.
 
    SALE OF THE SECURITIES.  Upon the sale or exchange of the Securities, the
holder will generally recognize gain or loss equal to the difference between the
amount realized on such sale and the tax basis of such Securities. Assuming such
Securities are held as a capital asset, such gain or loss will be a long-term
capital gain or loss if the Securities have been held for more than one year.
However, any loss recognized by a holder on the sale of Common Shares or
Preferred Shares held for not more than six months and with respect to which a
capital gain dividend was received will be treated as a long-term capital loss
to the extent of the amount of distributions from the Company required to be
treated by such holder as long-term capital gain.
 
    TREATMENT OF TAX-EXEMPT SECURITYHOLDERS.  Distributions from the Company to
a tax-exempt employee pension trust or other domestic tax-exempt shareholder
generally will not constitute "unrelated business taxable income" ("UBTI")
unless the shareholder has borrowed to acquire or carry its Common Shares or
Preferred Shares. However, qualified trusts that hold more than 10% (by value)
of the shares of certain REITs may be required to treat a certain percentage of
such a REIT's distributions as UBTI. This
 
                                       40
<PAGE>
requirement will apply only if (i) the REIT would not qualify as such for
Federal income tax purposes but for the application of a "look-through"
exception to the "five or fewer" requirement applicable to shares held by
qualified trusts and (ii) the REIT is "predominantly held" by qualified trusts.
A REIT is predominantly held by qualified trusts if either (i) a single
qualified trust holds more than 25% by value of the REIT interests or (ii) one
or more qualified trusts, each owning more than 10% by value of the REIT
interests, hold in the aggregate more than 50% of the REIT interests. The
percentage of any REIT dividend treated as UBTI is equal to the ratio of (a) the
UBTI earned by the REIT (treating the REIT as if it were a qualified trust and
therefore subject to tax on UBTI) to (b) the total gross income (less certain
associated expenses) of the REIT. A de minimis exception applies where the ratio
set forth in the preceding sentence is less than 5% for any year. For these
purposes, a qualified trust is any trust described in section 401(a) of the Code
and exempt from tax under section 501(a) of the Code. The provisions requiring
qualified trusts to treat a portion of REIT distributions as UBTI will not apply
if the REIT is able to satisfy the "five or fewer" requirement without relying
upon the "look-through" exception. Distributions by the Operating Partnership to
a tax exempt holder of Debt Securities will generally not constitute UBTI unless
the acquisition of such Debt Securities is debt financed within the meaning of
Section 514(c) of the Code.
 
TAXATION OF HOLDERS OF DEBT SECURITIES
 
    STATED INTEREST AND MARKET DISCOUNT
 
    Holders of Debt Securities will be required to include stated interest on
the Debt Securities in gross income for federal income tax purposes in
accordance with their methods of accounting for tax purposes. Purchasers of Debt
Securities should be aware that the holding and disposition of Debt Securities
may be affected by the market discount provisions of the Internal Revenue Code
of 1986, as amended (the "Code"). These rules generally provide that, subject to
a statutorily-defined de minimis exception, if a holder of a debt instrument
purchases it at a market discount and thereafter recognizes gain on a
disposition of the debt instrument (including a gift or payment on maturity),
the lesser of such gain (or appreciation, in the case of a gift) or the portion
of the market discount that accrued while the debt instrument was held by such
holder will be treated as ordinary interest income at the time of the
disposition. For this purpose, a purchase at a market discount includes a
purchase after original issuance at a price below the debt instrument's stated
principal amount. The market discount rules also provide that a holder who
acquires a debt instrument at a market discount (and who does not elect, as
described below, to include such market discount in income on a current basis)
may be required to defer a portion of any interest expense that may otherwise be
deductible on any indebtedness incurred or maintained to purchase or carry such
debt instrument until the holder disposes of the debt instrument in a taxable
transaction.
 
    A Holder of a debt instrument acquired at a market discount may elect to
include the market discount in income as the discount thereon accrues, either on
a straight line basis or, if elected, on a constant interest rate basis. The
current inclusion election, once made, applies to all market discount
obligations acquired by such holder on or after the first day of the first
taxable year to which the election applies, and may not be revoked without the
consent of the Internal Revenue Service ("IRS"). If a holder of a Note elects to
include market discount in income in accordance with the preceding sentence, the
foregoing rules with respect to the recognition of ordinary income on a sale or
certain other dispositions of such Note and the deferral of interest deductions
on indebtedness related to such Note would not apply.
 
    AMORTIZABLE BOND PREMIUM
 
    Generally, if the tax basis of an obligation held as a capital asset exceeds
the amount payable at maturity of the obligation, such excess may constitute
amortizable bond premium that the holder may elect to amortize under the
constant interest rate method and deduct over the period from his acquisition
date to the obligation's maturity date. A holder who elects to amortize bond
premium must reduce his tax basis
 
                                       41
<PAGE>
in the related obligation by the amount of the aggregate deductions allowable
for amortizable bond premium.
 
    The amortizable bond premium deduction is treated as an offset to interest
income on the related security for federal income tax purposes. Each prospective
purchaser is urged to consult his tax advisor as to the consequences of the
treatment of such premium as an offset to interest income for federal income tax
purposes.
 
    DISPOSITION
 
    In general, a holder of a Note will recognize gain or loss upon the sale,
exchange, redemption, payment upon maturity or other taxable disposition of the
Note measured by the difference between (i) the amount of cash and the fair
market value of property received (except to the extent that such cash or other
property is attributable to the payment of accrued interest not previously
included in income, which amount will be taxable as ordinary income) and (ii)
the holder's tax basis in the Note (as increased by any market discount
previously included in income by the holder and decreased by any amortizable
bond premium deducted over the term of the Note). Subject to the market discount
and amortizable bond premium rules above, any such gain or loss will generally
be long-term capital gain or loss, provided the Note was a capital asset in the
hands of the holder and had been held for more than one year.
 
BACKUP WITHHOLDING ON SECURITIES
 
    Under the backup withholding rules, a domestic holder of Securities may be
subject to backup withholding at the rate of 31% with respect to interest or
dividends paid on, and gross proceeds from the sale of, the Securities unless
such holder (a) is a corporation or comes within certain other exempt categories
and, when required, demonstrates this fact or (b) provides a correct taxpayer
identification number, certifies as to no loss of exemption from backup
withholding and otherwise complies with applicable requirements of the backup
withholding rules. A holder of Securities who does not provide the Company with
his current taxpayer identification number may be subject to penalties imposed
by the Internal Revenue Service. Any amount paid as backup withholding will be
creditable against the holder's income tax liability.
 
    The Company will report to Holders of Securities and the IRS the amount of
any "reportable payments" (including any interest or dividends paid) and any
amount withheld with respect to the Securities during the calendar year.
 
    The backup withholding and information reporting rules are under review by
the United States Treasury, and their applications to the Securities could be
changed prospectively by future Treasury regulations.
 
                                       42
<PAGE>
OTHER TAX CONSIDERATIONS
 
    EFFECT OF TAX STATUS OF OPERATING PARTNERSHIP ON REIT
QUALIFICATION.  Substantially all of the Company's investments are through the
Operating Partnership. The Operating Partnership may involve special tax
considerations. Such considerations include (i) the allocations of income and
expense items of the Operating Partnership, which could affect the computation
of taxable income of the Company, (ii) the status of the Operating Partnership
as a partnership (as opposed to an association taxable as a corporation) for
income tax purposes, and (iii) the taking of actions by the Operating
Partnership that could adversely affect the Company's qualifications as a REIT.
In addition, the Operating Partnership owns certain properties through
subsidiary partnerships. These partnerships have been structured in a manner
that is intended to qualify them for taxation as "partnerships" for Federal
income tax purposes. If the Operating Partnership or any other partnership in
which the Operating Partnership has an interest were treated as an association
taxable as a corporation, the Company would fail to qualify as a REIT for a
number of reasons.
 
    TAX ALLOCATIONS WITH RESPECT TO THE PROPERTIES.  When property is
contributed to a partnership in exchange for an interest in the partnership, the
partnership generally takes a carryover basis in that property for tax purposes
equal to the adjusted basis of the contributing partner in the property, rather
than a basis equal to the fair market value of the property at the time of
contribution. Pursuant to section 704(c) of the Code, income, gain, loss and
deduction attributable to such contributed property 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 the 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 formed by way of contributions
of appreciated property (including certain of the Communities or interests
therein). Consequently, the Operating Partnership's partnership agreement
requires tax allocations to be made in a manner consistent with section 704(c)
of the Code. The Regulations under Section 704(c) of the Code provide
partnerships with a choice of several methods of accounting for Book-Tax
Differences for property contributed on or after December 21, 1993, including
the retention of the "traditional method" that was available under prior law or
the election of certain alternative methods. The Operating Partnership has
elected the "traditional method" of Section 704(c) allocations. Under the
traditional method, which is the least favorable method from the Company's
perspective, the carryover basis of contributed interests in the Communities in
the hands of the Operating Partnership could cause the Company (i) to be
allocated lower amounts of depreciation deductions for tax purposes than would
be allocated to the Company if all Communities were to have a tax basis equal to
their fair market value at the time of the contribution and (ii) to be allocated
taxable gain in the event of a sale of such contributed interests in the
Communities in excess of the economic or book income allocated to the Company as
a result of such sale, with a corresponding benefit to the other partners in the
Operating Partnership. These allocations possibly could cause the Company to
recognize taxable income in excess of cash proceeds, which might adversely
affect the Company's ability to comply with REIT distribution requirements,
although the Company does not anticipate that this will occur.
 
    Interests in the Communities purchased by the Operating Partnership (other
than in exchange for interests in the Operating Partnership) simultaneously with
or subsequent to the admission of the Company to the Operating Partnership
acquired an initial tax basis equal to their fair market value. Thus, Section
704(c) of the Code will not apply to such interests.
 
    MANAGEMENT COMPANIES.  A portion of the amounts to be used to fund
distributions to shareholders is expected to come from the Management Companies,
through dividends on stock of the Management Companies held by the Operating
Partnership and interest on the Contribution Notes held by the Operating
Partnership. In general, the Management Companies conduct activities, such as
property
 
                                       43
<PAGE>
management for third parties, that generate nonqualifying income for purposes of
the REIT income tests described above. The Management Companies will not qualify
as REITs and will pay Federal, state and local income taxes on their taxable
incomes at normal corporate rates. The Company anticipates that, initially,
deductions for interest and amortization will largely offset the otherwise
taxable income of the Management Companies, but there can be no assurance that
this will be the case or that the IRS will not challenge such deductions.
Moreover, such deductions may not be available for any additional Management
Companies, if any, established by the Company. Any federal, state or local
income taxes that the Management Companies are required to pay will reduce the
cash available for distribution by the Company to its shareholders.
 
    As described above, the value of the equity and debt securities of a
Management Company held by the Company (or to be held by the Company in the case
of any additional Management Companies) cannot exceed 5% of the value of the
Company's assets at a time when a holder of Units in the Operating Partnership
exercises his redemption right (or the Company otherwise is considered to
acquire additional securities of a Management Company). See "Federal Income Tax
Considerations--Requirements for Qualification." This limitation may restrict
the ability of a Management Company to increase the size of its respective
business unless the value of the assets of the Company is increasing at a
commensurate rate.
 
SPECIAL TAX CONSIDERATIONS OF NON-U.S. STOCKHOLDERS
 
    The rules governing U.S. federal income taxation of nonresident alien
individuals, foreign corporations, foreign partnerships, and other foreign
shareholders (collectively, "Non-U.S. Shareholders") are complex and no attempt
will be made herein to provide more than a summary of such rules. PROSPECTIVE
NON-U.S. SHAREHOLDERS SHOULD CONSULT WITH THEIR OWN TAX ADVISORS TO DETERMINE
THE IMPACT OF FEDERAL, STATE, AND LOCAL INCOME TAX LAWS WITH REGARD TO AN
INVESTMENT IN THE SECURITIES, INCLUDING ANY REPORTING REQUIREMENTS.
 
    Distributions to Non-U.S. Shareholders that are not attributable to gain
from sales or exchanges by the Company of U.S. real property interests and are
not designated by the Company as capital gains dividends will be treated as
dividends of ordinary income to the extent that they are made out of current or
accumulated earnings and profits of the Company. Such distributions ordinarily
will be subject to a withholding tax equal to 30% of the gross amount of the
distribution unless an applicable tax treaty reduces or eliminates that tax.
However, if income from the investment in the Common Shares or Preferred Shares
is treated as effectively connected with the Non-U.S. Shareholder's conduct of a
U.S. trade or business, the Non-U.S. Shareholder generally will be subject to
federal income tax at graduated rates, in the same manner as U.S. shareholders
are taxed with respect to such distributions (and also may be subject to the 30%
branch profits tax in the case of a Non-U.S. Shareholder that is a non-U.S.
corporation). The Company expects to withhold U.S. income tax at the rate of 30%
on the gross amount of any such distributions made to a Non-U.S. Shareholder
unless (i) a lower treaty rate applies and any required form evidencing
eligibility for that reduced rate is filed with the Company or (ii) the Non-U.S.
Shareholder files an IRS Form 4224 with the Company claiming that the
distribution is effectively connected income. Distributions in excess of current
and accumulated earnings and profits of the Company will not be taxable to a
shareholder to the extent that such distributions do not exceed the adjusted
basis of the shareholder's Common Shares or Preferred Shares, but rather will
reduce the adjusted basis of such shares. To the extent that such distributions
in excess of current and accumulated earnings and profits exceed the adjusted
basis of a Non-U.S. Shareholder's shares of Common Shares or Preferred Shares,
such distributions will give rise to tax liability if the Non-U.S. Shareholder
would otherwise be subject to tax on any gain from the sale or disposition of
his Common Shares or Preferred Shares, as described below. Because it generally
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 entire amount of any distribution normally will be subject to withholding at
the same rate as a dividend.
 
                                       44
<PAGE>
However, a Non-U.S. Shareholder can file a claim for refund with the U.S.
Internal Revenue Service for the overwithheld amount to the extent it is
determined subsequently that a distribution was, in fact, in excess of current
and accumulated earnings and profits of the Company.
 
    For any year in which the Company qualifies as a REIT, distributions that
are attributable to gain from sales or exchanges by the Company of U.S. real
property interests will be taxed to a Non-U.S. Shareholder under the provisions
of the Foreign Investment in Real Property Tax Act of 1980 ("FIRPTA"). Under
FIRPTA, distributions attributable to gain from sales of U.S. real property
interests are taxed to a Non-U.S. Shareholder as if such gain were effectively
connected with U.S. business. Non-U.S. Shareholders thus would be taxed at the
normal capital gain rates applicable to U.S. shareholders (subject to applicable
alternative minimum tax and a special alternative minimum tax in the case of
nonresident alien individuals). Distributions subject to FIRPTA also may be
subject to a 30% branch profits tax in the hands of a non-U.S. corporate
shareholder not entitled to treaty relief or exemption. The Company is required
to withhold 35% of any distribution that is designated by the Company as a
capital gains dividend. The amount withheld is creditable against the Non-U.S.
Shareholder's FIRPTA tax liability.
 
    Gain recognized by a Non-U.S. Shareholder upon a sale of his Common Shares
or Preferred Shares generally will not be taxed under FIRPTA if the Company is a
"domestically controlled REIT," defined generally as a REIT in which at all
times during a specified testing period less than 50% in value of the stock was
held directly or indirectly by non-U.S. persons. It is currently anticipated
that the Company will be a "domestically controlled REIT," and, therefore, sales
of Common Shares or Preferred Shares will not be subject to taxation under
FIRPTA. However, because the Common Shares or Preferred Shares will be traded
publicly, no assurance can be given that the Company will continue to be a
"domestically controlled REIT." Furthermore, gain not subject to FIRPTA will be
taxable to a Non-U.S. Shareholder if (i) investment in the Common Shares or
Preferred Shares is effectively connected with the Non-U.S. Shareholder's U.S.
trade or business, in which case the Non-U.S. Shareholder will be subject to the
same treatment as U.S. shareholders with respect to such gain, or (ii) the
Non-U.S. Shareholder is a nonresident alien individual who was present in the
United States for 183 days or more during the taxable year and certain other
conditions apply, in which case the nonresident alien individual will be subject
to a 30% tax on the individual's capital gains. If the gain on the sale of
Common Shares or Preferred Shares were to be subject to taxation under FIRPTA,
the Non-U.S. Shareholder will be subject to the same treatment as U.S.
shareholders with respect to such gain (subject to applicable alternative
minimum tax, a special alternative minimum tax in the case of nonresident alien
individuals, and the possible application of the 30% branch profits tax in the
case of non-U.S. corporations). IN ADDITION, NON-U.S. SHAREHOLDERS SHOULD BE
AWARE THAT, IN THE PAST, LEGISLATIVE PROPOSALS HAVE BEEN MADE THAT WOULD HAVE
SUBJECTED NON-U.S. PERSONS TO U.S. TAX IN CERTAIN CIRCUMSTANCES ON THEIR GAINS
FROM THE SALE OF STOCK IN U.S. CORPORATIONS. THERE CAN BE NO ASSURANCE THAT A
SIMILAR PROPOSAL WILL NOT BE ENACTED INTO LAW IN A FORM DETRIMENTAL TO FOREIGN
HOLDERS OF THE COMMON SHARES OR PREFERRED SHARES.
 
STATE AND LOCAL TAX
 
    The Company and its shareholders may be subject to state and local tax in
various states and localities, including those in which it or they transact
business, own property, or reside. The tax treatment of the Company and the
shareholders in such jurisdictions may differ from the Federal income tax
treatment described above. Consequently, prospective investors should consult
their own tax advisors regarding the effect of state and local tax laws on an
investment in the Securities of the Company.
 
                                       45
<PAGE>
                      RATIOS OF EARNINGS TO FIXED CHARGES
 
    The following table sets forth the consolidated ratios of earnings to fixed
charges of the Company, the Operating Partnership and the predecessor to the
Company and the Operating Partnership for the periods shown:
<TABLE>
<CAPTION>
                                                                                                                   YEARS ENDED
                                                   YEARS ENDED                                                      DECEMBER
                                                   DECEMBER 31,                                                        31,
                         THREE MONTHS ENDED    --------------------      JANUARY 26-            JANUARY 1-         -----------
                           MARCH 31, 1997        1996       1995      DECEMBER 31, 1994   JANUARY 25, 1994(1)(2)     1993(1)
                        ---------------------  ---------  ---------  -------------------  -----------------------  -----------
<S>                     <C>                    <C>        <C>        <C>                  <C>                      <C>
Ratios................            1.81x            1.83x      1.40x           1.83x                   .89x              1.22x
 
<CAPTION>
 
                          1992(1)
                        -----------
<S>                     <C>
Ratios................       1.17x
</TABLE>
 
- ------------------------
 
(1) Ratios for the period January 1--January 25, 1994 and the years ended
    December 31, 1993 and 1992 reflect periods prior to the recapitalization and
    initial public offering of the Company on January 26, 1994.
 
(2) The earnings for this period were inadequate to cover fixed charges by
    $146,000.
 
    The ratios of earnings to fixed charges were computed by dividing earnings
by fixed charges. For this purpose, earnings consist of net income (loss) before
minority interest, gain on sale of real estate assets and extraordinary items,
plus fixed charges. Fixed charges consist of interest expense, capitalized
interest, credit enhancement fees and loan cost amortization. To date, the
Company has not issued any Preferred Shares; therefore, the ratios of earnings
to combined fixed charges and Preferred Shares dividend requirements are the
same as the ratios of earnings to fixed charges presented above.
 
                              PLAN OF DISTRIBUTION
 
    The Company may sell Preferred Shares, Common Shares and Warrants and the
Operating Partnership may sell Debt Securities to or through one or more
underwriters or dealers for public offering and sale by or through them,
directly to one or more individual, institutional or other purchasers, through
agents or through a combination of any such methods of sale. Direct sales to
investors may also be accomplished through subscription rights distributed to
the Company's shareholders on a pro rata basis, which may or may not be
transferrable. In connection with any distribution of subscription rights to
shareholders, if all of the underlying Securities are not subscribed for, the
Company may sell the unsubscribed Securities directly to third parties or may
engage the services of one or more underwriters, dealers or agents, including
standby underwriters, to sell the unsubscribed Securities to third parties.
 
    The distribution of the Securities may be effected from time to time in one
or more transactions at a fixed price or prices, which may be changed, at market
prices prevailing at the time of sale, at prices related to such prevailing
market prices, or at negotiated prices (any of which may represent a discount
from the prevailing market prices).
 
    In connection with the sale of Securities, underwriters or agents may
receive compensation from the Company or the Operating Partnership or from
purchasers of Securities, for whom they may act as agents, in the form of
discounts, concessions or commissions. Underwriters may sell 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 agents. Underwriters, dealers, and
agents that participate in the distribution of Securities may be deemed to be
underwriters under the Securities Act, and any discounts or commissions they
receive from the Company or the Operating Partnership and any profit on the
resale of Securities they realize may be deemed to be underwriting discounts and
commissions under the Securities Act. Any such underwriter or agent will be
identified, and any such compensation received from the Company or the Operating
Partnership will be described, in the applicable Prospectus Supplement.
 
    Unless otherwise specified in the related Prospectus Supplement, each series
of Securities will be a new issue with no established trading market, other than
the Common Shares which are listed on the
 
                                       46
<PAGE>
NYSE. Any Common Shares sold pursuant to a Prospectus Supplement will be listed
on the NYSE, subject to official notice of issuance. The Operating Partnership
or the Company may elect to list any series of Debt Securities or Preferred
Shares, respectively, on an exchange, but are not obligated to do so. It is
possible that one or more underwriters may make a market in a series of
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, or the trading market for, any series of Debt Securities,
Preferred Shares or Warrants.
 
    Until the distribution of the Securities is completed, rules of the
Commission may limit the ability of any underwriters and selling group members
to bid for and purchase the Securities. As an exception to these rules,
underwriters are permitted to engage in certain transactions that stabilize the
price of the Securities. Such transactions consist of bids or purchases for the
purpose of pegging, fixing or maintaining the price of the Securities.
 
    If any underwriters create a short position in the Securities in connection
with an offering, i.e., if they sell more Securities than are set forth on the
cover page of the applicable Prospectus Supplement, the underwriters may reduce
that short position by purchasing Securities in the open market.
 
    The lead underwriters may also impose a penalty bid on certain other
underwriters and selling group members participating in an offering. This means
that if the lead underwriters purchase Securities in the open market to reduce
the underwriters' short position or to stabilize the price of the Securities,
they may reclaim the amount of any selling concession from the underwriters and
selling group members who sold those Securities as part of the offering.
 
    In general, purchases of a security for the purpose of stabilization or to
reduce a short position could cause the price of the security to be higher than
it might be in the absence of such purchases. The imposition of a penalty bid
might also have an effect on the price of a security to the extent that it were
to discourage resales of the security before the distribution is completed.
 
    Neither the Company nor the Operating Partnership makes any representation
or prediction as to the direction or magnitude of any effect that the
transactions described above might have on the price of the Securities. In
addition, neither the Company nor the Operating Partnership makes any
representation that underwriters will engage in such transactions or that such
transactions, once commenced, will not be discontinued without notice.
 
    Under agreements into which the Company or the Operating Partnership may
enter, underwriters, dealers and agents who participate in the distribution of
Securities may be entitled to indemnification by the Company or the Operating
Partnership against certain liabilities, including liabilities under the
Securities Act.
 
    Underwriters, dealers and agents may engage in transactions with, or perform
services for, or be tenants of, the Company or the Operating Partnership in the
ordinary course of business.
 
    If so indicated in the applicable Prospectus Supplement, the Company will
authorize underwriters or other persons acting as the Company's agents to
solicit offers by certain institutions to purchase Securities from the Company
at the public offering price set forth in such Prospectus Supplement pursuant to
delayed delivery contracts ("Company Contracts") providing the payment and
delivery on the date or dates stated in such Prospectus Supplement. Institutions
with which such contracts, when authorized, may be made include commercial and
savings banks, insurance companies, pension funds, investment companies,
educational and charitable institutions and others, but in all cases such
institutions must be approved by the Company. The obligations of any purchaser
under any such contracts will be subject to the condition that the purchase of
the Securities shall not at the time of delivery be prohibited under the laws of
the jurisdiction to which such purchaser is subject. The underwriters and such
other agents will not have any responsibility in respect of the validity or
performance of such contracts.
 
                                       47
<PAGE>
    If so indicated in the applicable Prospectus Supplement, the Operating
Partnership will authorize underwriters or other persons acting as the Operating
Partnership's agents to solicit offers by certain institutions to purchase Debt
Securities from the Operating Partnership at the public offering price set forth
in such Prospectus Supplement pursuant to delayed delivery contracts ("Operating
Partnership Contracts") providing for payment and delivery on the date or dates
stated in such Prospectus Supplement. Each Operating Partnership Contract will
be for an amount no less than, and the aggregate principal amounts of Debt
Securities sold pursuant to Operating Partnership Contracts shall be not less
nor more than, the respective amounts stated in the applicable Prospectus
Supplement. Institutions with which such contracts, when authorized, may be made
include commercial and savings banks, insurance companies, pension funds,
investment companies, educational and charitable institutions and others, but
will in all cases be subject to the approval of the Operating Partnership. The
obligations of any purchaser under any such contract will be subject to the
conditions that (i) the purchase of the Debt Securities shall not at the time of
delivery be prohibited under the laws of any jurisdiction in the United States
to which such purchaser is subject, and (ii) if the Debt Securities are being
sold to underwriters, the Operating Partnership shall have sold to such
underwriters the total principal amount of the Debt Securities less the
principal amount thereof covered by the Operating Partnership Contracts. The
underwriters and such other agents will not have any responsibility in respect
of the validity or performance of such contracts.
 
    In order to comply with the securities laws of certain states, if
applicable, the Securities offered hereby will be sold in such jurisdictions
only through registered or licensed brokers or dealers. In addition, in certain
states Securities may not be sold unless they have been registered or qualified
for sale in the applicable state or an exemption from the registration or
qualification requirement is available and is complied with.
 
                                 LEGAL MATTERS
 
    Certain legal matters, including the legality of the Securities, will be
passed upon for the Company and the Operating Partnership by Goodwin, Procter &
Hoar LLP, Boston, Massachusetts.
 
                                    EXPERTS
 
    The financial statements and schedules incorporated by reference in this
Prospectus and elsewhere in the Registration Statement of which this Prospectus
is a part to the extent and for the periods indicated in their reports have been
audited by Arthur Andersen LLP, independent public accountants, and are included
herein in reliance upon the authority of said firm as experts in giving said
reports.
 
                                       48
<PAGE>
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    YOU SHOULD RELY ONLY ON THE INFORMATION INCORPORATED BY REFERENCE OR
CONTAINED IN THIS PROSPECTUS OR ANY SUPPLEMENT. WE HAVE NOT AUTHORIZED ANYONE
ELSE TO PROVIDE YOU WITH DIFFERENT OR ADDITIONAL INFORMATION. WE ARE NOT MAKING
AN OFFER OF THESE SECURITIES IN ANY STATE WHERE THE OFFER IS NOT PERMITTED. YOU
SHOULD NOT ASSUME THAT THE INFORMATION IN THIS PROSPECTUS OR ANY SUPPLEMENT IS
ACCURATE AS OF ANY DATE OTHER THAN THE DATE ON THE FRONT OF THOSE DOCUMENTS.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                            PAGE
                                                                                            ----
<S>                                                                                         <C>
                                     PROSPECTUS SUPPLEMENT
Prospectus Supplement Summary.............................................................   S-3
Additional Risk Factors...................................................................   S-6
The Company...............................................................................   S-8
Ratios of Earnings to Fixed Charges.......................................................  S-11
Ratios of Earnings to Combined Fixed Charges and Preferred Dividends......................  S-11
Use of Proceeds...........................................................................  S-12
Capitalization............................................................................  S-12
Description of Notes......................................................................  S-13
Certain Federal Income Tax Consequences...................................................  S-22
Underwriting..............................................................................  S-25
Legal Matters.............................................................................  S-26
 
                                           PROSPECTUS
Available Information.....................................................................     2
Incorporation of Certain Documents by Reference...........................................     2
Risk Factors..............................................................................     4
The Company and the Operating Partnership.................................................     9
Use of Proceeds...........................................................................     9
Description of Debt Securities............................................................    10
Description of Preferred Shares...........................................................    22
Description of Common Shares..............................................................    27
Description of Warrants...................................................................    28
Limits on Ownership of Shares of Beneficial Interest......................................    29
Certain Provisions of Maryland Law and of the Company's Declaration of Trust and Bylaws...    31
Federal Income Tax Considerations.........................................................    33
Ratios of Earnings to Fixed Charges.......................................................    46
Plan of Distribution......................................................................    46
Legal Matters.............................................................................    48
Experts...................................................................................    48
</TABLE>
 
                                  $15,000,000
 
                                     [LOGO]
 
                                 GABLES REALTY
                              LIMITED PARTNERSHIP
 
                          6.60% SENIOR NOTES DUE 2001
 
                            ------------------------
 
                             PROSPECTUS SUPPLEMENT
 
                            ------------------------
 
                            PAINEWEBBER INCORPORATED
                                OCTOBER 5, 1998
 
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