ARCHSTONE COMMUNITIES TRUST/
424B2, 1998-10-29
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>
 
                                                FILED PURSUANT TO RULE 424(b)(2)
                                                      Registration No. 333-42283


PROSPECTUS SUPPLEMENT
(To Prospectus dated September 18, 1998)
 
[LOGO OF ARCHSTONE]
 
ARCHSTONE COMMUNITIES TRUST
 
$120,000,000
 
7.20% Notes due April 15, 2003
 
ISSUE PRICE: 100%
 
Interest payable April 15 and October 15
 
The Notes will mature on April 15, 2003. Interest will accrue from October 30,
1998. Archstone may redeem the Notes in whole or in part at any time at the
Redemption Price. The Notes will be issued in minimum denominations of $1,000
increased in multiples of $1,000.
 
NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE
ADEQUACY OR ACCURACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.
 
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
          PRICE TO       DISCOUNTS AND  PROCEEDS TO
          PUBLIC         COMMISSIONS    THE COMPANY
- ----------------------------------------------------
<S>       <C>            <C>            <C>
Per Note  100%           .450%          99.550%
- ----------------------------------------------------
Total     $120,000,000   $540,000       $119,460,000
- ----------------------------------------------------
</TABLE>
 
Archstone does not intend to apply for listing of the Notes on any national
securities exchange. Currently, there is no public market for the Notes.
 
Archstone expects that delivery of the Notes will be made to investors on or
about October 30, 1998.
 
J.P. MORGAN & CO.
 
 
October 27, 1998
<PAGE>
 
No dealer, salesperson or any other person has been authorized to give any
information or to make any representations other than those contained or
incorporated by reference in this Prospectus Supplement and the accompanying
Prospectus, and, if given or made, such information or representations must not
be relied upon as having been authorized by Archstone Communities Trust
("Archstone") or by J.P. Morgan Securities, Inc. (the "Underwriter"). This
Prospectus Supplement and the accompanying Prospectus do not constitute an
offer to sell or the solicitation of an offer to buy 7.20% Notes due April 15,
2003 (the "Notes") by anyone in any jurisdictions in which such offer or
solicitation is not authorized or in which the person making such offer or
solicitation is not qualified to do so or to any person to whom it is unlawful
to make such offer or solicitation. Neither the delivery of this Prospectus
Supplement or the accompanying Prospectus, nor any sale made hereunder or
thereunder shall, under any circumstances, create any implication that there
has been no change in the affairs of Archstone since the date hereof or thereof
or that the information contained or incorporated by reference herein or
therein is correct as of anytime subsequent to the date of such information.
 
                           FORWARD-LOOKING STATEMENTS
 
The statements contained in this Registration Statement, or incorporated by
reference, that are not historical facts are forward-looking within the meaning
of Section 27A of the Securities Act of 1933, as amended (the "Securities Act")
and Section 21E of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"). These forward-looking statements are based on current
expectations, estimates and projections about the industry and markets in which
Archstone operates, management's beliefs and assumptions made by management.
Words such as "expects," "anticipates," "intends," "plans," "believes,"
"seeks," "estimates," and variations of such words and similar expressions are
intended to identify such forward-looking statements. These statements are not
guarantees of future performance and involve certain risks, uncertainties and
assumptions which are difficult to predict. Therefore, actual outcomes and
results may differ materially from what is expressed or forecasted in such
forward-looking statements. Archstone undertakes no obligation to update
publicly any forward-looking statements, whether as a result of new
information, future events or otherwise. Archstone's operating results depend
primarily on income from multifamily communities, which is substantially
influenced by (i) demand and supply of multifamily units in Archstone's primary
target market and submarkets, (ii) operating expense levels, (iii) the
effectiveness of property level operations and (iv) the pace and price at which
Archstone can acquire and develop additional multifamily communities. Capital
and credit market conditions which affect Archstone's cost of capital also
influence operating results.
 
                               TABLE OF CONTENTS
 
                             PROSPECTUS SUPPLEMENT
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Archstone Communities Trust................................................ S-3
Ratio of Earnings to Fixed Charges......................................... S-3
Use of Proceeds............................................................ S-3
Description of Notes....................................................... S-4
Underwriting............................................................... S-7
Validity of Notes.......................................................... S-8
Experts.................................................................... S-8
 
                                   PROSPECTUS
 
Archstone Communities Trust................................................   2
Use of Proceeds............................................................   2
Ratio Information..........................................................   3
Description of Debt Securities.............................................   4
Description of Preferred Shares............................................  18
Description of Common Shares...............................................  23
Federal Income Tax Considerations..........................................  27
Plan of Distribution.......................................................  34
Experts....................................................................  35
Legal Matters..............................................................  36
Available Information......................................................  36
Incorporation by Reference.................................................  37
</TABLE>
 
                                      S-2
<PAGE>
 
                          ARCHSTONE COMMUNITIES TRUST
 
Archstone, formerly known as Security Capital Pacific Trust ("PTR"), is a real
estate operating company focused on the acquisition, development, operation and
long-term ownership of multifamily communities in markets and submarkets with
strong economic fundamentals and high barriers to entry throughout the United
States. Archstone's primary objective is creating long-term sustainable growth
in per share cash flow and expects to generate significant internal growth from
its well located operating communities and the completion and stabilization of
new communities in its development pipeline. Archstone has a significant
national presence, and as of September 30, 1998, Archstone had 237 operating
communities representing 69,515 units, with other communities under
development, in markets that include 29 of the nation's 50 largest metropolitan
markets. The number of operating communities and units includes communities
acquired in the merger of Security Capital Atlantic Incorporated ("Atlantic")
with and into PTR (the "Atlantic Merger") which was consummated in July 1998.
 
The foundation for Archstone's growth strategy is its commitment to fundamental
real estate and customer research, allowing Archstone to deploy its capital
into markets, products and new business opportunities which it believes have
the greatest potential for long-term cash flow growth. Archstone's objective is
to create a dominant national brand in the multifamily industry by emphasizing
an extremely high level of customer service. Management believes that this
unique, research driven strategy will continue to allow Archstone to produce
attractive long-term returns for its shareholders.
 
Archstone was formed in 1963 and is organized as a real estate investment trust
("REIT"), under the laws of Maryland. Its principal executive offices are
located at 7670 South Chester Street, Englewood, Colorado 80112, and its
telephone number is (303) 708-5959.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
For the purpose of computing these ratios, (a) "earnings" consist of earnings
from operations plus fixed charges other than capitalized interest and (b)
"fixed charges" consist of interest on borrowed funds (including capitalized
interest) and amortization of debt discount and expense.
 
<TABLE>
<CAPTION>
PRO FORMA    HISTORICAL                            HISTORICAL
SIX MONTHS   SIX MONTHS    PRO FORMA               YEAR ENDED
  ENDED        ENDED       YEAR ENDED             DECEMBER 31,
 JUNE 30,     JUNE 30,    DECEMBER 31,   ------------------------------------
   1998         1998        1997(1)      1997(1)   1996   1995   1994   1993
- ----------   ----------   ------------   -------   ----   ----   ----   ----
<S>          <C>          <C>            <C>       <C>    <C>    <C>    <C>
   2.2          2.1           1.6          1.1     2.5    3.2    2.6    4.0
</TABLE>
- --------
(1) Earnings from operations for 1997 included a one time, non-cash charge of
    $71.7 million associated with costs incurred in acquiring the management
    companies from an affiliate. Excluding this charge, the ratio of earnings
    to fixed charges for the year ended December 31, 1997 would be 2.0 (2.3 on
    a pro forma basis giving effect to (i) the Atlantic Merger, (ii) the
    acquisition of management companies from an affiliate which occurred in
    September 1997, (iii) the acquisition or probable acquisition of certain
    multifamily communities (including any related dispositions) and (iv) the
    sale of Atlantic's Homestead convertible mortgage notes receivable for
    $119.4 million plus accrued interest of $1.0 million as if each had
    occurred on January 1, 1997).
 
                                USE OF PROCEEDS
 
The net proceeds to Archstone from the sale of the Notes are expected to be
approximately $119,360,000 (after deducting estimated expenses of $100,000),
all of which will be used to repay a portion of the borrowings under
Archstone's $750 million unsecured revolving line of credit (the "Line") with
certain lenders including Morgan Guaranty Trust Company of New York ("MGT"), an
affiliate of J.P. Morgan Securities Inc. At October 26, 1998, $553.0 million in
borrowings were outstanding under the Line. Amounts repaid under the Line may
be reborrowed and Archstone expects to make additional borrowings under the
Line following this offering for the development and acquisition of multifamily
properties and for working capital purposes. The Line bears interest at the
greater of prime (8.00% at October 26, 1998) or the federal funds rate plus
0.50% (5.56% at October 26, 1998) or at Archstone's option, LIBOR plus 0.65%
(6.09% at October 26, 1998). The spread over LIBOR can vary from LIBOR plus
0.50% to LIBOR plus 1.25% based upon the rating of Archstone's long term
unsecured senior notes. The Line is scheduled to mature on July 7, 2001 at
which time it may be converted into a two-year term loan at Archstone's option.
 
                                      S-3
<PAGE>
 
                              DESCRIPTION OF NOTES
 
The following description of the terms of the Notes offered hereby (referred to
in the accompanying Prospectus as the "Debt Securities") supplements, and to
the extent inconsistent therewith replaces, the description of the general
terms and provisions of the Debt Securities set forth in the accompanying
Prospectus, to which reference is hereby made.
 
GENERAL
 
The Notes constitute a series of Debt Securities (which are more fully
described in the accompanying Prospectus) to be issued pursuant to an
Indenture, dated as of February 1, 1994, as supplemented by the First
Supplemental Indenture, dated as of February 2, 1994 (as so supplemented, the
"Indenture"), between Archstone and State Street Bank and Trust Company (the
"Trustee"). The Notes will be limited to an aggregate principal amount of
$120,000,000. The terms of the Notes include those provisions contained in the
Indenture (the terms of which are more fully described in the accompanying
Prospectus) and those made part of the Indenture by reference to the Trust
Indenture Act of 1939, as amended (the "Trust Indenture Act"). The Notes are
subject to all such terms, and holders of Notes are referred to the Indenture
and Trust Indenture Act for a statement thereof. As of October 26, 1998,
Archstone had $947.2 million of unsecured long-term debt outstanding pursuant
to the Indenture and aggregate unsecured long-term debt of $1.1 billion
including the unsecured long-term debt Archstone assumed in the Atlantic
Merger.
 
The Notes will be direct, senior unsecured obligations of Archstone and will
rank equally with all other unsecured and unsubordinated indebtedness of
Archstone from time to time outstanding. However, the Notes are effectively
subordinated to mortgages and other secured indebtedness of Archstone and
Archstone's subsidiaries, which encumbered certain assets of Archstone and
Archstone's subsidiaries (approximately $433.6 million of secured debt was
outstanding at September 30, 1998 including debt assumed in the Atlantic
Merger).
 
As of September 30, 1998, on a pro forma basis giving effect to the issuance of
the Notes offered hereby and the application of the net proceeds therefrom, the
total outstanding indebtedness of Archstone and its subsidiaries was
approximately $2.2 billion. Archstone may incur additional indebtedness,
subject to the provisions described under "Description of Debt Securities--
Certain Covenants--Limitations on Incurrence of Debt" in the accompanying
Prospectus.
 
The defeasance and covenant defeasance provisions of the Indenture described
under "Description of Debt Securities--Discharge, Defeasance and Covenant
Defeasance" in the accompanying Prospectus will apply to the Notes. Each of the
covenants described in the Prospectus under the caption "Description of Debt
Securities--Certain Covenants" will be subject to defeasance.
 
The Notes will only be issued in fully registered form in denominations of
$1,000 and integral multiples thereof.
 
PRINCIPAL AND INTEREST
 
The Notes will bear interest at 7.20% per annum and will mature on April 15,
2003. The Notes will bear interest from October 30, 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 15 and
October 15 of each year, commencing on April 15, 1999 (each, an "Interest
Payment Date"), to the persons in whose name the applicable Notes are
registered in the Security Register on the preceding April 1 or October 1
(whether or not 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.
 
If any Interest Payment Date or the Maturity Date falls on a day that is not a
Business Day, the required payment shall be made 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 the Maturity Date, as the case may be. "Business Day" means any day, other
than a Saturday or Sunday, on which banks in the City of New York are not
required or authorized by law or executive order to close.
 
REFERENCE IS MADE TO THE SECTION ENTITLED "DESCRIPTION OF DEBT SECURITIES--
CERTAIN COVENANTS" IN THE ACCOMPANYING PROSPECTUS FOR A DESCRIPTION OF THE
COVENANTS APPLICABLE TO THE NOTES.
 
                                      S-4
<PAGE>
 
OPTIONAL REDEMPTION
 
The Notes may be redeemed at any time at the option of Archstone, 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").
 
From and after the date notice has been given as provided in the Indenture, if
funds for the redemption of any Notes called for redemption shall have been
made available on such redemption date, 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 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.
 
If less than all of the Notes are to be redeemed at the option of Archstone,
Archstone will notify the Trustee at least 45 days prior to the redemption date
(or such shorter period as satisfactory to the Trustee) of the aggregate
principal amount of the Notes to be redeemed and the 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.
 
"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 semiannual 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 0.25% (one-fourth of one percent) plus the arithmetic
mean of the yields under the respective headings "This Week" and "Last Week"
published in the Statistical Release under the caption "Treasury Constant
Maturities" for the maturity (rounded to the nearest month) corresponding to
the remaining life to maturity, as of the payment date of the principal being
redeemed or paid. If no maturity exactly corresponds to such maturity, yields
for the two published maturities most closely corresponding to such maturity
shall be calculated pursuant to the immediately preceding sentence and the
Reinvestment Rate shall be interpolated or extrapolated from such yields on a
straight-line basis, rounding in each of such relevant periods to the nearest
month. For the 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.
 
"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 under the Indenture, then such
other reasonably comparable index which shall be designated by Archstone.
 
BOOK-ENTRY PROCEDURES
 
DTC, New York, New York, will act as securities depository for the Notes. The
Notes will be issued as fully-registered securities registered in the name of
Cede & Co. (DTC's partnership nominee). One fully-registered Note will be
issued with respect to the Notes.
 
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 Exchange Act. DTC
holds securities that its participants ("Participants") deposit with DTC. DTC
also facilitates the settlement among Participants of securities transactions,
such as transfers and pledges, in deposited securities through electronic
computerized book-entry changes in Participants' accounts, thereby eliminating
the need for physical movement of securities certificates. Direct participants
include securities brokers and dealers, banks, trust companies, clearing
corporations, and certain other organizations ("Direct Participants"). DTC is
owned by a number
 
                                      S-5
<PAGE>
 
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, either directly
or indirectly ("Indirect Participants"). The Rules applicable to DTC and its
Participants are on file with the Securities and Exchange Commission.
 
Purchases of Notes under the DTC system must be made by or through Direct
Participants, which will receive a credit for the Notes on DTC's records. The
ownership interest of each actual purchaser of each Note ("Beneficial Owner")
will in turn be recorded on the Direct and Indirect Participants' records.
Beneficial Owners will not receive written confirmation from DTC of their
purchase, but Beneficial Owners are expected to receive written confirmations
providing details of the transaction, as well as periodic statements of their
holdings, from the Direct or Indirect Participant through which the Beneficial
Owner entered into the transaction. Transfers of ownership interests in the
Notes are to be accomplished by entries made on the books of Participants
acting on behalf of Beneficial Owners. Beneficial Owners will not receive
certificates representing their ownership interests in Notes, except in the
event that use of the book-entry system for the Notes is discontinued.
 
To facilitate subsequent transfers, all Notes deposited by Participants with
DTC are registered in the name of DTC's partnership nominee, Cede & Co. The
deposit of Notes with DTC and their registration in the name of Cede & Co.
effect no change in beneficial ownership. DTC has no knowledge of the actual
Beneficial Owners of the Notes; DTC's record reflects only the identity of the
Direct Participants to whose accounts such Notes are credited, which may or may
not be the Beneficial Owners. Participants are responsible for keeping account
of their holdings on behalf of their customers.
 
Conveyance of notices and other communications by DTC to Direct Participants,
by Direct Participants to Indirect Participants, and by Direct Participants to
Beneficial Owners will be governed by arrangements among them, subject to any
statutory or regulatory requirements as may be in effect from time to time.
 
Redemption notices will be sent to DTC. If less than all of the Notes within a
series are being redeemed, DTC's practice is to determine by lot the amount of
the interest of each Direct Participant in such series to be redeemed.
 
Neither DTC nor Cede & Co. will consent or vote with respect to the Notes.
Under its usual procedures, DTC will mail a proxy (the "Omnibus Proxy") to
Archstone as soon as possible after the record date. The Omnibus Proxy assigns
Cede & Co.'s consenting or voting rights to those Direct Participants to whose
accounts the Notes are credited on the record date (identified in a listing
attached to the Omnibus Proxy).
 
Principal and interest payments on the Notes will be made to Cede & Co., as
nominee of DTC. DTC's practice is to credit Direct Participants' accounts, upon
DTC's receipt of funds and corresponding detail information from Archstone, on
payable date in accordance with their respective holdings shown on DTC's
records. Payments by Participants to Beneficial Owners will be governed by
standing instructions and customary practices, as is the case with securities
held for the accounts of customers in bearer form or registered in "street
name," and will be the responsibility of such Participant and not of DTC or
Archstone, subject to any statutory or regulatory requirements as may be in
effect from time to time. Payment of principal and interest to Cede & Co. is
the responsibility of Archstone, disbursement of such payments to Direct
Participants shall be the responsibility of DTC, and disbursement of such
payments to the Beneficial Owners shall be the responsibility of Direct and
Indirect Participants.
 
DTC may discontinue providing its services as securities depository with
respect to the Notes at any time by giving reasonable notice to Archstone.
Under such circumstances, in the event that a successor securities depository
is not obtained, certificates representing the Notes will be printed and
delivered.
 
Archstone may decide to discontinue use of the system of book-entry transfers
through DTC (or a successor securities depository). In that event, certificates
representing the Notes will be printed and delivered.
 
The information in this section concerning DTC and DTC's book-entry system has
been obtained from sources that Archstone believes to be reliable, but
Archstone takes no responsibility for the accuracy thereof.
 
SAME-DAY SETTLEMENT AND PAYMENT
 
Settlement for the Notes will be made by the Underwriter in immediately
available funds. All payments of principal and interest will be made by
Archstone in immediately available funds or the equivalent, so long as DTC
continues to make its Same-Day Funds Settlement System available to Archstone.
 
                                      S-6
<PAGE>
 
                                  UNDERWRITING
 
Subject to the terms and conditions set forth in the underwriting agreement
(the "Underwriting Agreement"), between Archstone and the Underwriter, dated
October 27, 1998, Archstone has agreed to sell to the Underwriter and the
Underwriter has agreed to purchase all of the Notes offered hereby.
 
Under the terms and conditions of the Underwriting Agreement, the Underwriter
is obligated to take and pay for all of the Notes if any are taken.
 
The Underwriter has advised Archstone that it initially proposes to offer the
Notes directly to the public at the public offering prices set forth on the
cover page of this Prospectus Supplement, and to certain dealers at such prices
less a concession not in excess of 0.30% of the principal amount of the Notes.
The Underwriter may allow, and such dealers may reallow, a concession not in
excess of 0.225% of the principal amount of the Notes to certain other brokers
and dealers. After the initial public offering, the public offering prices and
such concessions may be changed.
 
The Notes are a new issue of securities with no established trading market.
Archstone has been advised by the Underwriter that the Underwriter intends to
make a market in the Notes but are 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 markets for the Notes.
 
In connection with the offering of the Notes, the Underwriter may engage in
transactions that stabilize, maintain or otherwise affect the price of the
Notes. Specifically, the Underwriter may overallot in connection with the
offering of the Notes, creating a syndicate short position. In addition, the
Underwriter may bid for, and purchase, the Notes in the open market to cover
syndicate short positions or to stabilize the price of the Notes. Finally, the
underwriting syndicate may reclaim selling concessions allowed for distributing
the Notes in the offering of the Notes, if the syndicate repurchases previously
distributed Notes in syndicate covering transactions, stabilization
transactions or otherwise. Any of these activities may stabilize or maintain
the market price of the Notes above independent market levels. The Underwriter
is not required to engage in any of these activities, and may end any of them
at any time.
 
Archstone has agreed to indemnify the Underwriter against certain liabilities,
including liabilities under the Securities Act.
 
In the ordinary course of their respective businesses, the Underwriter and its
affiliates have engaged and may in the future engage, in investment banking
and/or commercial banking transactions with Archstone and its affiliates. It is
expected that all of the net proceeds from the sale of the Notes will be
applied to repay certain borrowings under the Line. MGT, an affiliate of J.P.
Morgan Securities Inc., is a lender under the Line and will receive a portion
of the amounts repaid under such facilities with the net proceeds of the
offering. See "Use of Proceeds."
 
                                      S-7
<PAGE>
 
                               VALIDITY OF NOTES
 
The validity of the Notes offered hereby will be passed upon for Archstone by
Mayer, Brown & Platt, Chicago, Illinois. Certain legal matters will be passed
upon for the Underwriter by Skadden, Arps, Slate, Meagher & Flom LLP, New York,
New York. Mayer, Brown & Platt has in the past represented, and is currently
representing, Archstone and certain of its affiliates.
 
                                    EXPERTS
 
The financial statements of Archstone as of December 31, 1997 and 1996, and for
each of the years in the three-year period ended December 31, 1997 and the
related schedule, have been incorporated by reference herein and in the
Registration Statement, in reliance upon the report of KPMG Peat Marwick LLP,
independent certified public accountants, incorporated by reference herein and
upon the authority of said firm as experts in accounting and auditing.
 
With respect to the unaudited condensed interim financial information for the
periods ended March 31, 1998 and 1997 and June 30, 1998 and 1997 of Archstone,
incorporated by reference herein, KPMG Peat Marwick LLP have reported that they
applied limited procedures in accordance with professional standards for a
review of such information. However, their separate reports included in
Archstone's quarterly reports on Form 10-Q for the quarters ended March 31,
1998 and June 30, 1998, incorporated by reference herein, state that they did
not audit and they do not express an opinion on that interim financial
information. Accordingly, the degree of reliance on their reports on such
information should be restricted in light of the limited nature of the review
procedures applied. The accountants are not subject to the liability provisions
of Section 11 of the Securities Act for their reports on the unaudited interim
financial information because those reports are not a "report" or a "part" of
the Registration Statement prepared or certified by the accountants within the
meaning of Section 7 and 11 of the Securities Act.
 
The financial statements of Atlantic as of December 31, 1997 and 1996, and for
each of the three years in the period ended December 31, 1997 and the related
schedule, incorporated by reference herein, have been audited by Ernst & Young
LLP, independent auditors, as set forth in their report incorporated by
reference herein. Such financial statements have been incorporated by reference
herein in reliance upon such report given upon the authority of such firm as
experts in accounting and auditing.
 
With respect to the unaudited condensed interim financial information for the
periods ended March 31, 1998 and 1997 and June 30, 1998 and 1997 of Atlantic,
incorporated by reference herein, Ernst & Young LLP have reported that they
have applied limited procedures in accordance with professional standards for a
review of such information. However, they have communicated to management that
they did not audit and they do not express an opinion on that interim financial
information. Accordingly, the degree of reliance on their reviews of such
information should be restricted considering the limited nature of the review
procedures applied. The independent auditors are not subject to the liability
provisions of Section 11 of the Securities Act because their procedures do not
constitute a "report" or a "part" of the Registration Statement prepared or
certified by the auditors within the meaning of Sections 7 and 11 of the
Securities Act.
 
                                      S-8
<PAGE>
 
PROSPECTUS
- ---------- 
                                 $400,000,000
 
             DEBT SECURITIES, PREFERRED SHARES AND COMMON SHARES*
 
                               ----------------
 
  Archstone Communities Trust ("Archstone") may from time to time offer in one
or more series its (i) unsecured senior debt securities (the "Debt
Securities"), (ii) Preferred Shares of Beneficial Interest, par value $1.00
per share (the "Preferred Shares"), and (iii) Common Shares of Beneficial
Interest, par value $1.00 per share (the "Common Shares" and, together with
the Preferred Shares, the "Shares"). The Debt Securities, Preferred Shares and
Common Shares (together, the "Offered Securities") may be offered, separately
or together, in separate series, in amounts, at prices and on terms to be set
forth in a supplement to this Prospectus (a "Prospectus Supplement").
 
  The specific terms of the Offered Securities in respect of 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 Debt
Securities, the specific title, aggregate principal amount, currency, form
(which may be registered or bearer, or certificated or global), authorized
denominations, maturity, rate (or manner of calculation thereof) and time of
payment of interest, terms for redemption at the option of Archstone or
repayment at the option of the Holder, terms for sinking fund payments, and
any initial public offering price; (ii) in the case of Preferred Shares, the
specific title and stated value, any dividend, liquidation, redemption,
conversion, voting and other rights, and any initial public offering price;
and (iii) in the case of Common Shares, any initial public offering price. In
addition, such specific terms may include limitations on direct or beneficial
ownership and restrictions on transfer of the Offered Securities, in each case
as may be appropriate to preserve the status of Archstone as a real estate
investment trust ("REIT") for federal income tax purposes.
 
  The applicable Prospectus Supplement will also contain information, where
applicable, about certain United States federal income tax considerations
relating to, and any listing on a securities exchange of, the Offered
Securities covered by such Prospectus Supplement.
 
  The Offered Securities may be offered directly by Archstone, through agents
designated from time to time by Archstone, or to or through underwriters or
dealers. If any agents or underwriters are involved in the sale of any of the
Offered Securities, their names, and any applicable purchase price, fee,
commission or discount arrangement between or among them, will be set forth,
or will be calculable from the information set forth, in the applicable
Prospectus Supplement. See "Plan of Distribution." No Offered Securities may
be sold without delivery of the applicable Prospectus Supplement describing
the method and terms of the offering of such series of Offered Securities.
 
*Pursuant to Rule 429 under the Securities Act of 1933, as amended (the
   "Securities Act"), this Prospectus also relates to an additional
   $170,929,905 of the Debt Securities, Preferred Shares of Beneficial
   Interest and Common Shares of Beneficial Interest which were registered
   under previous registration statements.
 
                               ----------------
 
 THESE  SECURITIES HAVE NOT  BEEN APPROVED OR  DISAPPROVED BY THE  SECURITIES
   AND EXCHANGE COMMISSION OR ANY  STATE SECURITIES COMMISSION, NOR HAS THE
     SECURITIES   AND  EXCHANGE  COMMISSION   OR  ANY  STATE   SECURITIES
       COMMISSION  PASSED  UPON  THE   ACCURACY  OR  ADEQUACY  OF  THIS
         PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
           OFFENSE.
 
                               ----------------
 
              The date of this Prospectus is September 18, 1998.
<PAGE>
 
                          ARCHSTONE COMMUNITIES TRUST
 
 
  Archstone, formerly known as Security Capital Pacific Trust ("PTR"), is a
real estate operating company focused on the acquisition, development,
operation and long-term ownership of multifamily communities in markets and
submarkets with strong economic fundamentals and high barriers to entry
throughout the United States. Archstone's primary objective is creating long-
term sustainable growth in per share cash flow and expects to generate
significant internal growth from its well located operating communities and the
completion and stabilization of new communities in its development pipeline.
Archstone has a significant national presence, and as of June 30, 1998,
Archstone had 232 operating communities representing 68,429 units, with other
communities under development, in markets that include 29 of the nation's 50
largest metropolitan markets. The number of operating communities and units
includes communities acquired in the merger of Security Capital Atlantic
Incorporated with and into PTR (the "Atlantic Merger") which was approved by
Archstone's Board of Trustees on June 29, 1998 and was consummated in July
1998.
 
  The foundation for Archstone's growth strategy is its commitment to
fundamental real estate and customer research, allowing Archstone to deploy its
capital into markets, products and new business opportunities which it believes
have the greatest potential for long-term cash flow growth. Archstone's
objective is to create a dominant national brand in the multifamily industry by
emphasizing an extremely high level of customer service. Management believes
that this unique, research driven strategy will continue to allow Archstone to
produce attractive long-term returns for its shareholders.
 
  Archstone was formed in 1963 and is organized as a real estate investment
trust ("REIT"), under the laws of Maryland. Its principal executive offices are
located at 7670 South Chester Street, Englewood, Colorado 80112, and its
telephone number is (303) 708-5959.
 
 
                                USE OF PROCEEDS
 
  Unless otherwise described in the applicable Prospectus Supplement, the net
proceeds from the sale of the Offered Securities will be used for the
development and acquisition of additional multifamily communities, as suitable
opportunities arise, for the repayment of certain outstanding indebtedness at
such time and for working capital and general corporate purposes.
 
                                       2
<PAGE>
 
                               RATIO INFORMATION
 
  For the purpose of computing these ratios, (a) "earnings" consist of earnings
from operations plus fixed charges other than capitalized interest and (b)
"fixed charges" consist of interest on borrowed funds (including capitalized
interest) and amortization of debt discount and expense.
 
<TABLE>
<CAPTION>
                           PRO
                          FORMA
                           SIX
                          MONTHS  HISTORICAL  PRO FORMA      HISTORICAL YEAR ENDED
                          ENDED   SIX MONTHS  YEAR ENDED         DECEMBER 31,
                         JUNE 30, ENDED JUNE DECEMBER 31, ---------------------------
                           1998    30, 1998    1997(1)    1997(1) 1996 1995 1994 1993
                         -------- ---------- ------------ ------- ---- ---- ---- ----
<S>                      <C>      <C>        <C>          <C>     <C>  <C>  <C>  <C>
Ratio of earnings to
 fixed charges..........   2.2       2.1         1.6        1.1   2.5  3.2  2.6  4.0
Ratio of earnings to
 combined fixed charges
 and Preferred Share
 dividends..............   1.9       1.7         1.3        0.9   1.7  1.9  1.6  3.4
</TABLE>
- --------
(1) Earnings from operations for 1997 included a one time, non-cash charge of
    $71.7 million associated with costs incurred in acquiring the management
    companies from an affiliate. Excluding this charge, the ratio of earnings
    to fixed charges and the ratio of earnings to combined fixed charges and
    preferred share dividends for the year ended December 31, 1997 would be 2.0
    and 1.6, respectively (2.3 and 1.9 on a pro forma basis giving effect to
    the Atlantic Merger and certain other transactions).
 
                                       3
<PAGE>
 
                         DESCRIPTION OF DEBT SECURITIES
 
  The Debt Securities are to be issued under an Indenture, dated as of February
1, 1994, as supplemented by the First Supplemental Indenture, dated as of
February 2, 1994 (as so supplemented, the "Indenture"), between Archstone and
State Street Bank and Trust Company, as trustee (the "Trustee"). The Indenture
has been incorporated by reference as an exhibit to the Registration Statement
of which this Prospectus is a part and is available for inspection at the
corporate trust office of the Trustee at Two International Place, Boston,
Massachusetts 02110 Attention: Corporate Trust Division or as described below
under "Available Information." 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 Debt Securities to be issued
thereunder 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 such Debt Securities. All section
references appearing herein are to sections of the Indenture, and capitalized
terms used but not defined herein shall have the respective meanings set forth
in the Indenture.
 
GENERAL
 
  The Debt Securities will be direct, unsecured obligations of Archstone and
will rank equally with all other unsecured and unsubordinated indebtedness of
Archstone. The Indenture provides that the Debt Securities may be issued
without limit as to aggregate principal amount, in one or more series, in each
case as established from time to time in or pursuant to authority granted by a
resolution of Archstone's Board of Trustees (the "Board") or as established in
one or more indentures supplemental to the Indenture. All Debt Securities of
one series need not be issued at the same time and, unless otherwise provided,
a series may be reopened, without the consent of the Holders of the Debt
Securities of such series, for issuances of additional Debt Securities of such
series (Section 301).
 
  The Indenture provides that there may be more than one Trustee thereunder,
each with respect to one or more series of Debt Securities. Any Trustee under
the Indenture may resign or be removed with respect to one or more series of
Debt Securities, and a successor Trustee may be appointed to act with respect
to such series (Section 608). In the event that two or more persons are acting
as Trustee with respect to different series of Debt Securities, each such
Trustee shall be a Trustee of a trust under the Indenture separate and apart
from the trust administered by any other Trustee (Sections 101 and 609), and,
except as otherwise indicated herein, any action described herein to be taken
by the Trustee may be taken by each such Trustee with respect to, and only with
respect to, the one or more series of Debt Securities for which it is Trustee
under the Indenture.
 
  Reference is made to the Prospectus Supplement relating to the series of Debt
Securities being offered for the specific terms thereof, including:
 
    (1) the title of such series of Debt Securities;
 
    (2) the aggregate principal amount of such series of Debt Securities and
  any limit on such principal amount;
 
    (3) the percentage of the principal amount at which the Debt Securities
  of such series will be issued and, if other than the full principal amount
  thereof, the portion of the principal amount thereof payable upon
  declaration of acceleration of the maturity thereof, or the method by which
  any such portion shall be determined;
 
    (4) the date or dates, or the method by which such date or dates will be
  determined, on which the principal of such Debt Securities will be payable
  and the amount of principal payable thereon;
 
    (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 by which such date or dates will be
  determined, from which any such interest will accrue, the Interest Payment
  Dates on which any such interest will be payable, the Regular Record Dates
  for such Interest Payment Dates, or the method by which such dates shall be
  determined, the Person to whom, and the manner in which, such interest
  shall be payable, and the basis upon which interest shall be calculated if
  other than that of a 360-day year comprised of twelve 30-day months;
 
                                       4
<PAGE>
 
    (7) the place or places where the principal of (and premium or Make-Whole
  Amount (as defined), if any) and interest and Additional Amounts, if any,
  on the Debt Securities of such series will be payable, where such Debt
  Securities may be surrendered for registration of transfer or exchange and
  where notices or demands to or upon Archstone in respect of such Debt
  Securities and the Indenture may be served;
 
    (8) the period or periods within which, the price or prices (including
  the premium or Make-Whole Amount, if any) at which, the currency or
  currencies in which, and the other terms and conditions upon which the Debt
  Securities of such series may be redeemed, as a whole or in part, at the
  option of Archstone, if Archstone is to have such an option;
 
    (9) the obligation, if any, of Archstone to redeem, repay or purchase the
  Debt Securities of such series pursuant to any sinking fund or analogous
  provision or at the option of a Holder thereof, and the period or periods
  within which, the date or dates upon which, the price or prices at which,
  the currency or currencies, currency unit or units or composite currency or
  currencies in which, and the other terms and conditions upon which such
  Debt Securities shall be redeemed, repaid or purchased, as a whole or in
  part, pursuant to such obligation;
 
    (10) if other than United States dollars, the currency or currencies in
  which the Debt Securities of such series 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 or Make-
  Whole Amount, if any) or interest, if any, on the Debt Securities of such
  series may be determined with reference to an index, formula or other
  method (which index, formula or method may be, but need not be, based on a
  currency or currencies, currency unit or units or composite currency or
  currencies) and the manner in which such amounts shall be determined;
 
    (12) whether the principal of (and premium or Make-Whole Amount, if any)
  or interest or Additional Amounts, if any, on the Debt Securities of such
  series are to be payable, at the election of Archstone or a Holder, in a
  currency or currencies, currency unit or units or composite currency or
  currencies, other than that in which such Debt Securities are denominated
  or stated to be payable, the period or periods within which, and the terms
  and conditions upon which, such election may be made, and the time and
  manner of, and identity of the exchange rate agent with responsibility for,
  determining the exchange rate between the currency or currencies in which
  such Debt Securities are denominated or stated to be payable and the
  currency or currencies in which such Debt Securities are to be so payable;
 
    (13) any additions to, modifications of or deletions from the terms of
  such series of Debt Securities with respect to the Events of Default or
  covenants set forth in the Indenture;
 
    (14) whether the Debt Securities of such series will be issued in
  certificated or book-entry form;
 
    (15) whether the Debt Securities of such series 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 if other than $5,000 and the terms and conditions
  relating thereto;
 
    (16) the applicability, if any, of the defeasance and covenant defeasance
  provisions of Article Fourteen of the Indenture to such series of Debt
  Securities and any provisions in modification thereof, in addition thereto
  or in lieu thereof;
 
    (17) if the Debt Securities of such series are to be issued upon the
  exercise of debt warrants, the time, manner and place for such Debt
  Securities to be authenticated and delivered;
 
    (18) whether and under what circumstances Archstone will pay Additional
  Amounts as contemplated in the Indenture on the Debt Securities of such
  series in respect of any tax, assessment or governmental charge and, if so,
  whether Archstone will have the option to redeem such Debt Securities in
  lieu of making such payment; and
 
    (19) any other terms of such series of Debt Securities not inconsistent
  with the provisions of the Indenture (Section 301).
 
                                       5
<PAGE>
 
  The Debt Securities may provide for less than the entire principal amount
thereof to be payable upon declaration of acceleration of the maturity thereof
or bear no interest or bear interest at a rate which at the time of issuance is
below market rates ("Original Issue Discount Securities"). Special United
States federal income tax, accounting and other considerations applicable to
Original Issue Discount Securities will be described in the applicable
Prospectus Supplement.
 
  Under the Indenture, Archstone will have the ability, in addition to the
ability to issue Debt Securities with terms different from those of Debt
Securities previously issued, without the consent of the Holders, to reopen a
previous issue of a series of Debt Securities and issue additional Debt
Securities of such series.
 
  Except as set forth below under "Certain Covenants--Limitations on Incurrence
of Debt," the Indenture does not contain any other provisions that would limit
the ability of Archstone to incur indebtedness or that would afford Holders of
Debt Securities protection in the event of a highly leveraged or similar
transaction involving Archstone or in the event of a change of control of
Archstone. However, Archstone's Amended and Restated Declaration of Trust, as
amended and supplemented (the "Declaration of Trust"), restricts beneficial
ownership of Archstone's outstanding Shares by a single person, or persons
acting as a group, to 9.8% of such Shares, with certain exceptions (including
an exception for the ownership of up to 49% of such Shares in the case of
Security Capital Group Incorporated ("Security Capital Group")). See
"Description of Common Shares--Restriction on Size of Holdings." Additionally,
the Articles Supplementary relating to Archstone's Cumulative Convertible
Series A Preferred Shares of Beneficial Interest, par value $1.00 per share
(the "Series A Preferred Shares"), Archstone's Series B Cumulative Redeemable
Preferred Shares of Beneficial Interest, par value $1.00 per share (the "Series
B Preferred Shares") and Archstone's Series C Cumulative Redeemable Preferred
Shares of Beneficial Interest, par value $1.00 per share (the "Series C
Preferred Shares") restrict beneficial ownership of the Series A Preferred
Shares, Series B Preferred Shares and Series C Preferred Shares, respectively,
by a person, or persons acting as a group, to 25% of the Series A Preferred
Shares, Series B Preferred Shares or Series C Preferred Shares, as the case may
be. Similarly, the Articles Supplementary for each series of Preferred Shares
will contain certain provisions restricting the ownership and transfer of the
Preferred Shares. See "Description of Preferred Shares--Restrictions on
Ownership." These restrictions are designed to preserve Archstone's status as a
REIT and, therefore, may act to prevent or hinder a change of control.
Reference is made to the applicable Prospectus Supplement for information with
respect to any deletions from, modifications of or additions to the Events of
Default or covenants of Archstone that are described below, including any
addition of a covenant or other provision providing event risk or similar
protection.
 
DENOMINATIONS, INTEREST, REGISTRATION AND TRANSFER
 
  Unless otherwise described in the applicable Prospectus Supplement, the Debt
Securities of any series issued in registered form will be issuable in
denominations of $1,000 and integral multiples thereof. Unless otherwise
described in the applicable Prospectus Supplement, the Debt Securities of any
series issued in bearer form will be issuable in denominations of $5,000
(Section 302).
 
  Unless otherwise specified in the applicable Prospectus Supplement, the
principal of (and premium or Make-Whole Amount, if any) and interest on any
series of Debt Securities will be payable at the corporate trust office of the
Trustee, initially located at Two International Place, Boston, Massachusetts
02110 Attention: Corporate Trust Division; provided that, at the option of
Archstone, 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 to an account maintained within the United
States (Sections 301, 305, 306, 307 and 1002).
 
  If any Interest Payment Date, Principal Payment Date or the Maturity Date
falls on a day that is not a Business Day, the required payment shall be made
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, Principal Payment Date or the Maturity Date,
as the case may be. "Business Day" means any day, other than a Saturday or
Sunday, on which banks in Boston, Massachusetts are not required or authorized
by law or executive order to close. Any interest not punctually paid or duly
provided for on any Interest Payment Date with respect to a Debt Security
("Defaulted Interest") will forthwith cease to be payable to the Holder on the
 
                                       6
<PAGE>
 
applicable Regular Record Date and either may be paid to the person in whose
name such Debt Security is registered at the close of business on a special
record date (the "Special Record Date") for the payment of such Defaulted
Interest to be fixed by the Trustee, notice of which shall be given to the
Holder of such Debt Security not less than 10 days prior to such Special Record
Date, or may be paid at any time in any other lawful manner, all as more
completely described in the Indenture (Section 307).
 
  Subject to certain limitations imposed upon Debt Securities issued in book-
entry form, the Debt Securities of any series will be exchangeable for other
Debt Securities of the same series and of a like aggregate principal amount and
tenor of different authorized denominations upon surrender of such Debt
Securities at the corporate trust office of the Trustee referred to above. 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 thereof at the corporate trust office of the Trustee
referred to above. Every Debt Security surrendered for registration of transfer
or exchange shall be duly endorsed or accompanied by a written instrument of
transfer. No service charge will be made for any registration of transfer or
exchange of any Debt Securities, but Archstone may require payment of a sum
sufficient to cover any tax or other governmental charge payable in connection
therewith (Section 305). If the applicable Prospectus Supplement refers to any
transfer agent (in addition to the Trustee) initially designated by Archstone
with respect to any series of Debt Securities, Archstone may at any time
rescind the designation of any such transfer agent or approve a change in the
location at which any such transfer agent acts, except that Archstone will be
required to maintain a transfer agent in each Place of Payment for such series.
Archstone may at any time designate additional transfer agents with respect to
any series of Debt Securities (Section 1002).
 
  Neither Archstone nor the Trustee shall be required to (i) issue, register
the transfer of or exchange Debt Securities of any series during a period
beginning at the opening of business 15 days before any selection of Debt
Securities of that series to be redeemed and ending at the close of business on
the day of mailing of the relevant notice of redemption; (ii) register the
transfer of or exchange any Debt Security, or portion thereof, called for
redemption, except the unredeemed portion of any Debt Security being redeemed
in part; or (iii) issue, register the transfer of or exchange any Debt Security
which has been surrendered for repayment at the option of the Holder, except
the portion, if any, of such Debt Security not to be so repaid (Section 305).
 
MERGER, CONSOLIDATION OR SALE
 
  Archstone may 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 Archstone shall be the continuing entity, or the successor entity
(if other than Archstone) formed by or resulting from any such consolidation or
merger or which shall have received the transfer of such assets is a Person
organized and existing under the laws of the United States or any State thereof
and shall expressly assume payment of the principal of (and premium or Make-
Whole Amount, if any) and any interest (including Additional Amounts, if any)
on all of the Debt Securities and the due and punctual performance and
observance of all of the covenants and conditions contained in the Indenture;
(b) immediately after giving effect to such transaction and treating any
indebtedness which becomes an obligation of Archstone or any Subsidiary as a
result thereof as having been incurred by Archstone 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 (Sections 801 and 803).
 
CERTAIN COVENANTS
 
  Limitations on Incurrence of Debt. Archstone will not, and will not permit
any Subsidiary to, incur any Debt (as defined below) 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
Archstone and its Subsidiaries on a consolidated basis determined in accordance
with generally accepted accounting principles is greater than
 
                                       7
<PAGE>
 
60% of the sum of (without duplication) (i) Archstone's Total Assets (as
defined below) as of the end of the calendar quarter covered in Archstone'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 (the
"Commission") (or, if such filing is not permitted under the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), with the Trustee) prior
to the incurrence of such additional Debt and (ii) the purchase price of any
real estate assets or mortgages receivable acquired, and the amount of any
securities offering proceeds received (to the extent that such proceeds were
not used to acquire real estate assets or mortgages receivable or used to
reduce Debt), by Archstone or any Subsidiary since the end of such calendar
quarter, including those proceeds obtained in connection with the incurrence of
such additional Debt (Section 1004).
 
  In addition to the foregoing limitation on the incurrence of Debt, Archstone
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 Archstone or any Subsidiary 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
Archstone and its Subsidiaries on a consolidated basis which is secured by any
mortgage, lien, charge, pledge, encumbrance or security interest on property of
Archstone or any Subsidiary is greater than 40% of Archstone's Total Assets
(Section 1004).
 
  In addition to the foregoing limitations on the incurrence of Debt, Archstone
will not, and will not permit any Subsidiary to, incur any Debt if the ratio of
Consolidated Income Available for Debt Service (as defined below) to the Annual
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 thereto and to the application of the proceeds therefrom, and calculated
on the assumption that (i) such Debt and any other Debt incurred by Archstone
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 Archstone and its Subsidiaries since the first day of such
four-quarter period had been incurred, 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 Archstone 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 (Section 1004).
 
  Existence. Except as permitted under "--Merger, Consolidation or Sale,"
Archstone will do or cause to be done all things necessary to preserve and keep
in full force and effect its existence, rights (charter and statutory) and
franchises; provided, however, that Archstone 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 and that the loss thereof is
not disadvantageous in any material respect to the Holders of the Debt
Securities (Section 1005).
 
  Maintenance of Properties. Archstone will cause all of its 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 Archstone may be necessary so that the business carried on in
connection therewith may be properly and advantageously conducted at all times;
provided, however, that Archstone and its Subsidiaries shall not be prevented
from selling or otherwise disposing for value its properties in the ordinary
course of business (Section 1006).
 
                                       8
<PAGE>
 
  Insurance. Archstone will, and will cause each of its Subsidiaries to, keep
all of its insurable properties insured against loss or damage at least equal
to their then full insurable value with financially sound and reputable
insurance companies (Section 1007).
 
  Payment of Taxes and Other Claims. Archstone will 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 Archstone 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 Archstone or any
Subsidiary; provided, however, that Archstone 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
by appropriate proceedings (Section 1008).
 
  Provision of Financial Information. Whether or not Archstone is subject to
Section 13 or 15(d) of the Exchange Act, Archstone will, to the extent
permitted under the Exchange Act, file with the Commission the annual reports,
quarterly reports and other documents which Archstone would have been required
to file with the Commission pursuant to such Section 13 and 15(d) (the
"Financial Statements") if Archstone were so subject, such documents to be
filed with the Commission on or prior to the respective dates (the "Required
Filing Dates") by which Archstone would have been required so to file such
documents if Archstone were so subject. Archstone will also in any event (i)
within 15 days of each Required Filing Date (x) transmit by mail to all Holders
of Debt Securities, as their names and addresses appear in the Security
Register, without cost to such Holders, copies of the annual reports and
quarterly reports which Archstone would have been required to file with the
Commission pursuant to Section 13 or 15(d) of the Exchange Act if Archstone
were subject to such Sections and (y) file with the Trustee copies of the
annual reports, quarterly reports and other documents which Archstone would
have been required to file with the Commission pursuant to Section 13 or 15(d)
of the Exchange Act if Archstone were subject to such Sections and (ii) if
filing such documents by Archstone with the Commission is not permitted under
the Exchange Act, promptly upon written request and payment of the reasonable
cost of duplication and delivery, supply copies of such documents to any
prospective Holder (Section 1009).
 
  As used herein,
 
  "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.
 
  "Annual Service Charge" as of any date means the maximum amount which is
payable in any period for interest on, and original issue discount of, Debt of
Archstone and its Subsidiaries and the amount of dividends which are payable in
respect of any Disqualified Stock.
 
  "Capital Stock" means, with respect to any Person, any capital stock
(including preferred stock), shares, interests, participations or other
ownership interests (however designated) of such Person and any rights (other
than debt securities convertible into or exchangeable for corporate stock),
warrants or options to purchase any thereof.
 
  "Consolidated Income Available for Debt Service" for any period means
Earnings from Operations (as defined below) of Archstone and its Subsidiaries
plus amounts which have been deducted, and minus amounts which have been added,
for the following (without duplication): (i) interest on Debt of Archstone and
its Subsidiaries, (ii) provision for taxes of Archstone and its Subsidiaries
based on income, (iii) amortization of debt discount, (iv) provisions for gains
and losses on properties and property depreciation and amortization, (v) the
effect of any noncash charge resulting from a change in accounting principles
in determining Earnings from Operations for such period and (vi) amortization
of deferred charges.
 
                                       9
<PAGE>
 
  "Debt" of Archstone or any Subsidiary means any indebtedness of Archstone or
any Subsidiary, whether or not contingent, in respect of (i) borrowed money or
evidenced by bonds, notes, debentures or similar instruments; (ii) indebtedness
secured by any mortgage, pledge, lien, charge, encumbrance or any security
interest existing on property owned by Archstone or any Subsidiary; (iii) the
reimbursement obligations, contingent or otherwise, in connection with any
letters of credit actually issued or amounts representing the balance deferred
and unpaid of the purchase price of any property or services, except any such
balance that constitutes an accrued expense or trade payable, or all
conditional sale obligations or obligations under any title retention
agreement; (iv) the principal amount of all obligations of Archstone or any
Subsidiary with respect to redemption, repayment or other repurchase of any
Disqualified Stock; or (v) any lease of property by Archstone or any Subsidiary
as lessee which is reflected on Archstone's Consolidated Balance Sheet as a
capitalized lease in accordance with generally accepted accounting principles
to the extent, in the case of items of indebtedness under (i) through (iii)
above, that any such items (other than letters of credit) would appear as a
liability on Archstone's Consolidated Balance Sheet in accordance with
generally accepted accounting principles, and also includes, to the extent not
otherwise included, any obligation by Archstone 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), Debt of another Person (other
than Archstone or any Subsidiary) (it being understood that Debt shall be
deemed to be incurred by Archstone or any Subsidiary whenever Archstone or such
Subsidiary shall create, assume, guarantee or otherwise become liable in
respect thereof).
 
  "Disqualified Stock" means, with respect to any Person, any Capital Stock of
such Person which by the terms of such Capital Stock (or by the terms of any
security into which it is convertible or for which it is exchangeable or
exercisable), upon the happening of any event or otherwise (i) matures or is
mandatorily redeemable, pursuant to a sinking fund obligation or otherwise,
(ii) is convertible into or exchangeable or exercisable for Debt or
Disqualified Stock or (iii) is redeemable at the option of the holder thereof,
in whole or in part, in each case on or prior to the Stated Maturity of the
series of Debt Securities.
 
  "Earnings from Operations" for any period means net earnings excluding gains
and losses on sales of investments, net as reflected in the financial
statements of Archstone and its Subsidiaries for such period determined on a
consolidated basis in accordance with generally accepted accounting principles.
 
  "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) in the case of a partnership or any other entity other than
a corporation, the outstanding equity interest 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.
 
  "Total Assets" as of any date means the sum of (i) Archstone's Undepreciated
Real Estate Assets and (ii) all other assets of Archstone determined in
accordance with generally accepted accounting principles (but excluding
accounts receivable and intangibles).
 
  "Undepreciated Real Estate Assets" as of any date means the cost (original
cost plus capital improvements) of real estate assets of Archstone and its
Subsidiaries on such date, before depreciation and amortization determined on a
consolidated basis in accordance with generally accepted accounting principles.
 
EVENTS OF DEFAULT, NOTICE AND WAIVER
 
  The 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 or Additional Amounts
payable on any Debt Security of such series; (ii) default in the payment of the
principal of (or premium or Make-Whole Amount, if any, on) any Debt Security of
such series at its Maturity; (iii) default in making any sinking fund payment
as required for any Debt Security of such series; (iv) default in the
performance of any other covenant of Archstone contained in the Indenture
(other than a covenant added to the Indenture solely for the
 
                                       10
<PAGE>
 
benefit of a series of Debt Securities issued thereunder other than such
series), continued for 60 days after written notice as provided in the
Indenture; (v) default in the payment of an aggregate principal amount
exceeding $10,000,000 of any evidence of indebtedness of Archstone or any
mortgage, indenture or other instrument under which such indebtedness is issued
or by which such indebtedness is secured, such default having occurred after
the expiration of any applicable grace period and having resulted in the
acceleration of the maturity of such indebtedness, but only if such
indebtedness is not discharged or such acceleration is not rescinded or
annulled; (vi) the entry by a court of competent jurisdiction of one or more
judgments, orders or decrees against Archstone or any of its Subsidiaries in an
aggregate amount (excluding amounts fully covered by insurance) in excess of
$10,000,000 and such judgments, orders or decrees remain undischarged, unstayed
and unsatisfied in an aggregate amount (excluding amounts fully covered by
insurance) in excess of $10,000,000 for a period of 30 consecutive days; (vii)
certain events of bankruptcy, insolvency or reorganization, or court
appointment of a receiver, liquidator or trustee of Archstone or any
Significant Subsidiary or for all or substantially all of either of its
property; and (viii) any other Event of Default provided with respect to a
particular series of Debt Securities (Section 501). The term "Significant
Subsidiary" means each significant subsidiary (as defined in Regulation S-X
promulgated by the Commission) of Archstone.
 
  If an Event of Default under the Indenture with respect to Debt Securities of
any series at the time Outstanding occurs and is continuing, then in every such
case the Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Debt Securities of that series may declare the principal amount
(or, if the Debt Securities of that series are Original Issue Discount
Securities or Indexed Securities, such portion of the principal amount as may
be specified in the terms thereof) of, and the Make-Whole Amount, if any, on,
all of the Debt Securities of that series to be due and payable immediately by
written notice thereof to Archstone (and to the 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 the 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
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 Indenture, as the case may be) may rescind and annul such
declaration and its consequences if (i) Archstone shall have deposited with the
Trustee all required payments of the principal of (and premium or Make-Whole
Amount, if any) and interest, and any Additional Amounts, on the Debt
Securities of such series (or of all Debt Securities then outstanding under the
Indenture, as the case may be), plus certain fees, expenses, disbursements and
advances of the Trustee and (ii) all Events of Default, other than the
nonpayment of accelerated principal (or specified portion thereof and the Make-
Whole Amount, if any) or interest, with respect to Debt Securities of such
series (or of all Debt Securities then Outstanding under the Indenture, as the
case may be) have been cured or waived as provided in the Indenture (Section
502). The Indenture also provides that the Holders of not less than a majority
in principal amount of the Outstanding Debt Securities of any series (or of all
Debt Securities then Outstanding under the 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 or Make-Whole
Amount, if any) or interest or Additional Amounts payable on any Debt Security
of such series or (ii) in respect of a covenant or provision contained in the
Indenture that cannot be modified or amended without the consent of the Holder
of each Outstanding Debt Security affected thereby (Section 513).
 
  The Trustee is required to give notice to the Holders of Debt Securities
within 90 days of a default under the Indenture; provided, however, that the
Trustee may withhold notice to the Holders of any series of Debt Securities of
any default with respect to such series (except a default in the payment of the
principal of (or premium or Make-Whole Amount, if any) or interest or
Additional Amounts payable on any Debt Security of such series or in the
payment of any sinking fund installment in respect of any Debt Security of such
series) if the Responsible Officers of the Trustee consider such withholding to
be in the interest of such Holders (Section 601).
 
  The Indenture provides that no Holders of Debt Securities of any series may
institute any proceedings, judicial or otherwise, with respect to the Indenture
or for any remedy thereunder, except in the case of failure of
 
                                       11
<PAGE>
 
the Trustee, for 60 days, to act after it has received a written request to
institute proceedings in respect of an Event of Default from the Holders of not
less than 25% in principal amount of the Outstanding Debt Securities of such
series, as well as an offer of reasonable indemnity (Section 507). This
provision will not prevent, however, any Holder of Debt Securities from
instituting suit for the enforcement of payment of the principal of (and
premium or Make-Whole Amount, if any), interest on, and Additional Amounts
payable with respect to, such Debt Securities at the respective due dates
thereof (Section 508).
 
  Subject to provisions in the Indenture relating to its duties in case of
default, the Trustee is under no obligation to exercise any of its rights or
powers under the Indenture at the request or direction of any Holders of any
series of Debt Securities then Outstanding under the Indenture, unless such
Holders shall have offered to the Trustee reasonable security or indemnity
(Section 602). The Holders of not less than a majority in principal amount of
the Outstanding Debt Securities of any series (or of all Debt Securities then
Outstanding under the 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 Trustee, or of exercising any trust or power conferred upon
the Trustee. However, the Trustee may refuse to follow any direction which is
in conflict with any law or the Indenture, which may involve the Trustee in
personal liability or which may be unduly prejudicial to the Holders of Debt
Securities of such series not joining therein (Section 512).
 
  Within 120 days after the close of each fiscal year, Archstone must deliver
to the Trustee a certificate, signed by one of several specified officers,
stating whether or not such officer has knowledge of any default under the
Indenture and, if so, specifying each such default and the nature and status
thereof (Section 1010).
 
MODIFICATION OF THE INDENTURE
 
  Modifications and amendments of the Indenture may be made with the consent of
the Holders of not less than a majority in principal amount of all Outstanding
Debt Securities which are affected by such modification or amendment; provided,
however, that no such modification or amendment may, without the consent of the
Holder of each such Debt Security affected thereby, (i) change the Stated
Maturity of the principal of (or premium or Make-Whole Amount, if any), or any
installment of principal of or interest or Additional Amounts payable on, any
such Debt Security; (ii) reduce the principal amount of, or the rate or amount
of interest on, or any premium or Make-Whole Amount payable on redemption of,
or any Additional Amounts payable with respect to, any such Debt Security, or
reduce the amount of principal of an Original Issue Discount Security or Make-
Whole Amount, if any, 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 (and premium or Make-Whole Amount, if any), or interest
on, or any Additional Amounts payable with respect to, 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 Outstanding Debt Securities of any series necessary to modify or
amend the Indenture, to waive compliance with certain provisions thereof or
certain defaults and consequences thereunder or to reduce the quorum or voting
requirements set forth in the Indenture; or (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
(Section 902).
 
  The Holders of not less than a majority in principal amount of Outstanding
Debt Securities have the right to waive compliance by Archstone with certain
covenants in the Indenture (Section 1012).
 
  Modifications and amendments of the Indenture may be made by Archstone and
the Trustee without the consent of any Holder of Debt Securities for any of the
following purposes: (i) to evidence the succession of another Person to
Archstone as obligor under the Indenture; (ii) to add to the covenants of
Archstone for the benefit of the Holders of all or any series of Debt
Securities or to surrender any right or power conferred upon
 
                                       12
<PAGE>
 
Archstone in the Indenture; (iii) to add Events of Default for the benefit of
the Holders of all or any series of Debt Securities; (iv) to add or change any
provisions of the Indenture to facilitate the issuance of, 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 the 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 and any related coupons; (viii) to
provide for the acceptance of appointment by a successor Trustee or facilitate
the administration of the trusts under the Indenture by more than one Trustee;
(ix) to cure any ambiguity, defect or inconsistency in the Indenture or to make
any other changes, provided that in each case, such action shall not adversely
affect the interests of Holders of Debt Securities of any series in any
material respect; (x) to close the Indenture with respect to the authentication
and delivery of additional series of Debt Securities or to qualify, or maintain
qualification of, the Indenture under the TIA; or (xi) to supplement any of the
provisions of the Indenture to the extent necessary to permit or facilitate
defeasance and discharge of any series of such Debt Securities, provided that
such action shall not adversely affect the interests of the Holders of the Debt
Securities of any series in any material respect (Section 901).
 
  The Indenture provides that in determining whether the Holders of the
requisite principal amount of Outstanding Debt Securities of a series have
given any request, demand, authorization, direction, notice, consent or waiver
thereunder or whether a quorum is present at a meeting of Holders of Debt
Securities, (i) the principal amount of an Original Issue Discount Security
that shall be deemed to be outstanding shall be the amount of the principal
thereof that would be due and payable as of the date of such determination upon
declaration of acceleration of the maturity thereof; (ii) the principal amount
of a Debt Security denominated in a Foreign Currency that shall be deemed
outstanding shall be the United States 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 United States dollar equivalent on the
issue date of such Debt Security of the amount determined as provided in (i)
above); (iii) the principal amount of an Indexed Security that shall be deemed
outstanding shall be the principal face amount of such Indexed Security at
original issuance, unless otherwise provided with respect to such Indexed
Security pursuant to Section 301 of the Indenture; and (iv) Debt Securities
owned by Archstone or any other obligor upon the Debt Securities or any
Affiliate of Archstone or of such other obligor shall be disregarded (Section
101).
 
  The Indenture contains provisions for convening meetings of the Holders of
Debt Securities of a series (Section 1501). A meeting may be called at any time
by the Trustee, and also, upon request, by Archstone 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 the Indenture (Section 1502).
Except for any consent that must be given by the Holder of each Debt Security
affected by certain modifications and amendments of the Indenture, any
resolution presented at a meeting or adjourned meeting duly reconvened at which
a quorum is present may be adopted by the affirmative vote of the Holders of a
majority in principal amount of the Outstanding Debt Securities of such series;
provided, however, that, except as referred to above, any resolution with
respect to any request, demand, authorization, direction, notice, consent,
waiver or other action that may be made, given or taken by the Holders of a
specified percentage, which is less than a majority, in principal amount of the
Outstanding Debt Securities of a series may be adopted at a meeting or
adjourned meeting duly reconvened at which a quorum is present by the
affirmative vote of the Holders of such specified percentage in principal
amount of the Outstanding Debt Securities of that series. Any resolution passed
or decision taken at any meeting of Holders of Debt Securities of any series
duly held in accordance with the Indenture will be binding on all Holders of
Debt Securities of such series. The quorum at any meeting called to adopt a
resolution, and at any reconvened meeting, will be Persons holding or
representing a majority in principal amount of the Outstanding Debt Securities
of a series; provided, however, that if any action is to be taken at such
meeting with respect to a consent or waiver which may be given by the Holders
of not less than a specified percentage in principal amount of the Outstanding
Debt Securities of a series, the Persons holding or representing such specified
percentage in principal amount of the Outstanding Debt Securities of such
series will constitute a quorum (Section 1504).
 
                                       13
<PAGE>
 
  Notwithstanding the foregoing provisions, if any action is to be taken at a
meeting of Holders of Debt Securities of any series with respect to any
request, demand, authorization, direction, notice, consent, waiver or other
action that the Indenture expressly provides may be made, given or taken by the
Holders of a specified percentage in principal amount of all Outstanding Debt
Securities affected thereby, or of the Holders of such series and one or more
additional series: (i) there shall be no minimum quorum requirement for such
meeting and (ii) the principal amount of the Outstanding Debt Securities of
such series that vote in favor of such request, demand, authorization,
direction, notice, consent, waiver or other action shall be taken into account
in determining whether such request, demand, authorization, direction, notice,
consent, waiver or other action has been made, given or taken under the
Indenture (Section 1504).
 
  Any request, demand, authorization, direction, notice, consent, waiver or
other action provided by the Indenture to be given or taken by a specified
percentage in principal amount of the Holders of any or all series of Debt
Securities may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such specified percentage of Holders in
person or by agent duly appointed in writing; and, except as otherwise
expressly provided in the Indenture, such action shall become effective when
such instrument or instruments are delivered to the Trustee. Proof of execution
of any instrument or of a writing appointing any such agent shall be sufficient
for any purpose of the Indenture and (subject to Article Six of the Indenture)
conclusive in favor of the Trustee and Archstone, if made in the manner
specified above (Section 1507).
 
DISCHARGE, DEFEASANCE AND COVENANT DEFEASANCE
 
  Archstone may discharge certain obligations to Holders of any series of Debt
Securities that have not already been delivered to the Trustee for cancellation
and that either have become due and payable or will become due and payable
within one year (or scheduled for redemption within one year) by irrevocably
depositing with the Trustee, in trust, funds in such currency or currencies,
currency unit or units or composite currency or currencies in which such Debt
Securities are payable in an amount sufficient to pay the entire indebtedness
on such Debt Securities in respect of principal (and premium or Make-Whole
Amount, if any) and interest and Additional Amounts payable to the date of such
deposit (if such Debt Securities have become due and payable) or to the Stated
Maturity or Redemption Date, as the case may be (Section 401).
 
  The Indenture provides that, if the provisions of Article Fourteen are made
applicable to the Debt Securities of or within any series pursuant to Section
301 of the Indenture, Archstone 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 and to hold moneys for payment in
trust) ("defeasance") (Section 1402) or (ii) to be released from its
obligations with respect to such Debt Securities under Sections 1004 to 1009,
inclusive, of the Indenture (being the restrictions described under "--Certain
Covenants") and, if provided pursuant to Section 301 of the Indenture, its
obligations with respect to any other covenant, and any omission to comply with
such obligations shall not constitute a default or an Event of Default with
respect to such Debt Securities ("covenant defeasance") (Section 1403), in
either case upon the irrevocable deposit by Archstone with the 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 or Make-Whole Amount, if
any) and interest on such Debt Securities, and any mandatory sinking fund or
analogous payments thereon, on the scheduled due dates therefor.
 
  Such a trust may only be established if, among other things, Archstone has
delivered to the Trustee an Opinion of Counsel (as specified in the Indenture)
to the effect that the Holders of such Debt Securities will not recognize
income, gain or loss for United States federal income tax purposes as a result
of such defeasance or covenant defeasance and will be subject to United States
federal income tax on the same amounts, in the same
 
                                       14
<PAGE>
 
manner and at the same times as would have been the case if such defeasance or
covenant defeasance had not occurred, and such Opinion of Counsel, in the case
of defeasance, must refer to and be based upon a ruling of the Internal Revenue
Service or a change in applicable United States federal income tax law
occurring after the date of the Indenture (Section 1404).
 
  "Government Obligations" means securities which are (i) direct obligations of
the United States of America or the government which issued the Foreign
Currency in which the Debt Securities of a particular series are payable, for
the payment of which its full faith and credit is pledged or (ii) obligations
of a Person controlled or supervised by and acting as an agency or
instrumentality of the United States of America or such government which issued
the Foreign Currency in which the Debt Securities of such series are payable,
the payment of which is unconditionally guaranteed as a full faith and credit
obligation by the United States of America or such other government, which, in
either case, are not callable or redeemable at the option of the issuer
thereof, and shall also include a depository receipt issued by a bank or trust
company as custodian with respect to any such Government Obligation or a
specific payment of interest on or principal of any such Government Obligation
held by such custodian for the account of the holder of a depository receipt,
provided that (except as required by law) such custodian is not authorized to
make any deduction from the amount payable to the holder of such depository
receipt from any amount received by the custodian in respect of the Government
Obligation or the specific payment of interest on or principal of the
Government Obligation evidenced by such depository receipt (Section 101).
 
  Unless otherwise provided in the applicable Prospectus Supplement, if after
Archstone 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 Section 301 of the Indenture or the terms of such Debt
Security to receive payment in a currency, currency unit or composite currency
other than that in which such deposit has been made in respect of such Debt
Security or (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 shall be deemed to
have been, and will be, fully discharged and satisfied through the payment of
the principal of (and premium or Make-Whole Amount, 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 (Section 1405). "Conversion Event" means the cessation of
use of (i) a currency, currency unit or composite currency (other than the ECU
or other currency unit) 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 or
Make-Whole Amount, 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 United States dollars (Section 101).
 
  In the event Archstone 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
Sections 1004 to 1009, inclusive, of the 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 Obligations on deposit with the Trustee, will be
sufficient to pay amounts due on such Debt Securities at the time of their
Stated Maturity but may not be sufficient to pay amounts due on such Debt
Securities at the time of the acceleration resulting from such Event of
Default. However, Archstone would remain liable to make payment of such amounts
due at the time of acceleration.
 
                                       15
<PAGE>
 
  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.
 
REGISTRATION AND TRANSFER
 
  Subject to certain limitations imposed upon Debt Securities issued in book-
entry form, the Debt Securities of any series will be exchangeable for other
Debt Securities of the same series and of a like aggregate principal amount and
tenor of different authorized denominations upon surrender of such Debt
Securities at the corporate trust office of the Trustee referred to above. In
addition, subject to certain limitations imposed upon Debt Securities issued in
book-entry form, the Debt Securities of any series may be surrendered for
conversion or registration of transfer thereof at the corporate trust office of
the Trustee referred to above. Every Debt Security surrendered for registration
of transfer or exchange shall be duly endorsed or accompanied by a written
instrument of transfer. No service charge will be made for any registration of
transfer or exchange of any Debt Securities, but Archstone may require payment
of a sum sufficient to cover any tax or other governmental charge payable in
connection therewith (Section 305). Archstone may at any time designate a
transfer agent (in addition to the Trustee) with respect to any series of Debt
Securities. If Archstone has designated such a transfer agent or transfer
agents, Archstone may at any time rescind the designation of any such transfer
agent or approve a change in the location at which any such transfer agent
acts, except that Archstone will be required to maintain a transfer agent in
each Place of Payment for such series (Section 1002).
 
  Neither Archstone nor the Trustee shall be required to (i) issue, register
the transfer of or exchange Debt Securities of any series during a period
beginning at the opening of business 15 days before any selection of Debt
Securities of that series to be redeemed and ending at the close of business on
the day of mailing of the relevant notice of redemption; (ii) register the
transfer of or exchange any Debt Security, or portion thereof, called for
redemption, except the unredeemed portion of any Debt Security being redeemed
in part; or (iii) issue, register the transfer of or exchange any Debt Security
which has been surrendered for repayment at the option of the Holder, except
the portion, if any, of such Debt Security not to be so repaid (Section 305).
 
BOOK-ENTRY PROCEDURES
 
  The Debt Securities of a series may be issued in whole or in part in the form
of one or more global securities ("Global Securities") that will be deposited
with, or on behalf of, a depository (the "Depository") identified in the
applicable Prospectus Supplement relating to such series. Global Securities, if
any, are expected to be deposited with The Depository Trust Company, as
Depository. Global Securities may be issued in fully registered form and may be
issued in either temporary or permanent form. Unless and until it is exchanged
in whole or in part for the individual Debt Securities represented thereby, a
Global Security may not be transferred except as a whole by the Depository for
such Global Security to a nominee of such Depository or by a nominee of such
Depository to such Depository or another nominee of such Depository or by the
Depository or any nominee of such Depository to a successor Depository or any
nominee of such successor.
 
  The specific terms of the depository arrangement with respect to a series of
Debt Securities will be described in the applicable Prospectus Supplement
relating to such series. Unless otherwise indicated in the applicable
Prospectus Supplement, Archstone anticipates that the following provisions will
apply to depository arrangements.
 
  Upon the issuance of a Global Security, the Depository for such Global
Security or its nominee will credit on its book-entry registration and transfer
system the respective principal amounts of the individual Debt Securities
represented by such Global Security to the accounts of persons that have
accounts with such Depository ("Participants"). Such accounts shall be
designated by the underwriters, dealers or agents with respect to such Debt
Securities or by Archstone if such Debt Securities are offered and sold
directly by Archstone. Ownership of beneficial interests in a Global Security
will be limited to Participants or persons that may hold interests through
 
                                       16
<PAGE>
 
Participants. Ownership of beneficial interests in such Global Security will be
shown on, and the transfer of that ownership will be effected only through,
records maintained by the applicable Depository 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 beneficial interest in a Global
Security.
 
  So long as the Depository for a Global Security or its nominee is the
registered owner of such Global Security, such Depository or such nominee, as
the case may be, will be considered the sole owner or holder of the Debt
Securities represented by such Global Security for all purposes under the
Indenture. Except as provided below or in the applicable Prospectus Supplement,
owners of beneficial interest in a Global Security will not be entitled to have
any of the individual Debt Securities of the series represented by such Global
Security registered in their names, will not receive or be entitled to receive
physical delivery of any such Debt Securities of such series in definitive form
and will not be considered the owners or holders thereof under the Indenture.
 
  Payments of principal of, any premium or Make-Whole Amount and any interest
on, or any Additional Amounts payable with respect to, individual Debt
Securities represented by a Global Security registered in the name of a
Depository or its nominee will be made to the Depository or its nominee, as the
case may be, as the registered owner of the Global Security representing such
Debt Securities. None of Archstone, the Trustee, any Paying Agent or the
Security Registrar for such Debt Securities 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 Security for such Debt
Securities or for maintaining, supervising or reviewing any records relating to
such beneficial ownership interests.
 
  Archstone expects that the Depository for a series of Debt Securities or its
nominee, upon receipt of any payment of principal, premium, Make-Whole Amount
or interest in respect of a permanent Global Security representing any of such
Debt Securities, immediately will credit Participants' accounts with payments
in amounts proportionate to their respective beneficial interests in the
principal amount of such Global Security for such Debt Securities as shown on
the records of such Depository or its nominee. Archstone also expects that
payments by Participants to owners of beneficial interests in such Global
Security 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.
 
  If a Depository for a series of Debt Securities is at any time unwilling,
unable or ineligible to continue as depository and a successor depository is
not appointed by Archstone within 90 days, Archstone will issue individual Debt
Securities of such series in exchange for the Global Security representing such
series of Debt Securities. In addition, Archstone may, at any time and in its
sole discretion, subject to any limitations described in the applicable
Prospectus Supplement relating to such Debt Securities, determine not to have
any Debt Securities of such series represented by one or more Global Securities
and, in such event, will issue individual Debt Securities of such series in
exchange for the Global Security or Securities representing such series of Debt
Securities. Individual Debt Securities of such series so issued will be issued
in denominations, unless otherwise specified by Archstone, of $1,000 and
integral multiples thereof.
 
NO PERSONAL LIABILITY
 
  No past, present or future trustee, officer, employee or shareholder, as
such, of Archstone or any successor thereof shall have any liability for any
obligations of Archstone under the Debt Securities or the Indenture or for any
claim based on, in respect of, or by reason of, such obligations or their
creation. Each Holder of Debt Securities by accepting such Debt Securities
waives and releases all such liability. The waiver and release are part of the
consideration for the issue of Debt Securities (Section 111).
 
                                       17
<PAGE>
 
TRUSTEE
 
  The Indenture provides that there may be more than one Trustee thereunder,
each with respect to one or more series of Debt Securities. Any Trustee under
the Indenture may resign or be removed with respect to one or more series of
Debt Securities, and a successor Trustee may be appointed to act with respect
to such series (Section 608). In the event that two or more persons are acting
as Trustee with respect to different series of Debt Securities, each such
Trustee shall be a Trustee of a trust under the Indenture separate and apart
from the trust administered by any other Trustee (Sections 101 and 609), and
except as otherwise indicated herein, any action described herein to be taken
by the Trustee may be taken by each such Trustee with respect to, and only with
respect to, the one or more series of Debt Securities for which it is Trustee
under the Indenture.
 
                        DESCRIPTION OF PREFERRED SHARES
 
GENERAL
 
  Subject to limitations prescribed by Maryland law and the Declaration of
Trust, the Board is authorized to issue, from the authorized but unissued
shares of beneficial interest of Archstone, Preferred Shares in series and to
establish from time to time the number of Preferred Shares to be included in
such series and to fix the designation and any preferences, conversion and
other rights, voting powers, restrictions, limitations as to dividends,
qualifications and terms and conditions of redemption of the shares of each
series, and such other subjects or matters as may be fixed by resolution of the
Board or a duly authorized committee thereof. At August 31, 1998, Archstone had
4,840,215 of its Series A Preferred Shares issued and outstanding and held of
record by approximately 50 shareholders, 4,200,000 of its Series B Preferred
Shares issued and outstanding and held of record by approximately 260
shareholders and 2,000,000 of its Series C Preferred Shares issued and
outstanding and held of record by approximately 10 shareholders.
 
  Reference is made to the Prospectus Supplement relating to the series of
Preferred Shares being offered for the specific terms thereof, including:
 
    (1) The title and stated value of such series of Preferred Shares;
 
    (2) The number of shares of such series 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 Preferred Shares of such series;
 
    (4) The date from which dividends on Preferred Shares of such series
  shall cumulate, if applicable;
 
    (5) The procedures for any auction and remarketing, if any, for Preferred
  Shares of such series;
 
    (6) The provision for a sinking fund, if any, for Preferred Shares of
  such series;
 
    (7) The provision for redemption, if applicable, of Preferred Shares of
  such series;
 
    (8) Any listing of such series of Preferred Shares on any securities
  exchange;
 
    (9) The terms and conditions, if applicable, upon which Preferred Shares
  of such series will be convertible into Common Shares, including the
  conversion price (or manner of calculation thereof);
 
    (10) Whether interests in Preferred Shares of such series will be
  represented by Global Securities;
 
    (11) Any other specific terms, preferences, rights, limitations or
  restrictions of such series of Preferred Shares;
 
    (12) A discussion of federal income tax considerations applicable to
  Preferred Shares of such series;
 
    (13) The relative ranking and preferences of Preferred Shares of such
  series as to dividend rights and rights upon liquidation, dissolution or
  winding up of the affairs of Archstone;
 
                                       18
<PAGE>
 
    (14) 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 Archstone; and
 
    (15) Any limitations on direct or beneficial ownership and restrictions
  on transfer of Preferred Shares of such series, in each case as may be
  appropriate to preserve the status of Archstone as a REIT.
 
RANK
 
  Unless otherwise specified in the applicable Prospectus Supplement, the
Preferred Shares of each Series will, with respect to dividend rights and
rights upon liquidation, dissolution or winding up of Archstone, rank (i)
senior to all classes or series of Common Shares, and to all equity securities
ranking junior to such series of Preferred Shares; (ii) on a parity with all
equity securities issued by Archstone the terms of which specifically provide
that such equity securities rank on a parity with the Preferred Shares of such
series; and (iii) junior to all equity securities issued by Archstone the terms
of which specifically provide that such equity securities rank senior to
Preferred Shares of such series.
 
DIVIDENDS
 
  Holders of Preferred Shares of each series shall be entitled to receive,
when, as and if declared by the Board, out of assets of Archstone 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
Archstone on such record dates as shall be fixed by the Board.
 
  Dividends on any series of the Preferred Shares may be cumulative or
noncumulative, 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 fails to declare a dividend
payable on a dividend payment date on any series of the Preferred Shares for
which dividends are noncumulative, 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 Archstone 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 full dividends shall be
declared or paid or set apart for payment on the Preferred Shares of Archstone
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 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 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 the Preferred Shares of any series and the
shares of any other series of Preferred Shares ranking on a parity as 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 on the
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 cumulation
in respect of unpaid dividends for prior dividend periods if such series of
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.
 
                                       19
<PAGE>
 
  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 of the payment thereof set
apart for payment 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 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,
no dividends (other than in Common Shares or other capital shares 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 or other
distribution shall be declared or made upon the Common Shares or any other
capital shares of Archstone 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 capital shares of Archstone 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 shares of any such series) by Archstone (except by conversion
into or exchange for other capital shares of Archstone 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 remains 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
Archstone, 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 Preferred Shares of
such series that shall be redeemed by Archstone 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 series of Preferred Shares does not have a cumulative dividend,
include any cumulation 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 capital shares of Archstone, the terms of such
series of Preferred Shares may provide that, if no such capital shares 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, Preferred
Shares of such series shall automatically and mandatorily be converted into
shares of the applicable capital shares of Archstone pursuant to conversion
provisions specified in the applicable Prospectus Supplement.
 
  Notwithstanding the foregoing, unless (i) if such series of Preferred Shares
has a cumulative dividend, full cumulative dividends on all Preferred Shares of
any series shall have been or contemporaneously are declared and paid or
declared and a sum sufficient for the payment thereof set apart for payment for
all past dividend periods and the then current dividend period or (ii) if such
series of Preferred Shares does not have a cumulative dividend, full dividends
on all Preferred Shares of any 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
any 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
pursuant to a purchase or exchange offer made on the same terms to holders of
all outstanding Preferred Shares of such series, and, unless (i) if such series
of Preferred Shares has a cumulative dividend, full cumulative dividends on all
Preferred Shares of any series 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 or
(ii) if such series of Preferred Shares does not have a
 
                                       20
<PAGE>
 
cumulative dividend, full dividends on all Preferred Shares of any 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, Archstone shall not purchase or otherwise acquire directly or
indirectly any Preferred Shares of such series (except by conversion into or
exchange for capital shares of Archstone ranking junior to the Preferred Shares
of such series as to dividends and upon liquidation).
 
  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 Archstone
and such shares may be redeemed pro rata from the holders of record of
Preferred Shares of such series in proportion to the number of Preferred Shares
of such series held by such holders (with adjustments to avoid redemption of
fractional shares) or by lot in a manner determined by Archstone.
 
  Notice of redemption will be mailed at least 30 days but not more than 90
days before the redemption date to each holder of record of Preferred Shares of
any series to be redeemed at the address shown on the share transfer books of
Archstone. 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 Preferred 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 Preferred 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
Archstone 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
Preferred 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 Archstone, 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 Archstone ranking junior to such series of Preferred
Shares in the distribution of assets upon any liquidation, dissolution or
winding up of Archstone, the holders of each series of Preferred Shares shall
be entitled to receive out of assets of Archstone legally available for
distribution to shareholders liquidating distributions in the amount of the
liquidation preference per share (set forth in the applicable Prospectus
Supplement), plus an amount equal to all dividends accrued and unpaid thereon
(which shall not include any cumulation in respect of unpaid dividends for
prior dividend periods if such series of Preferred Shares does not have a
cumulative dividend). After payment of the full amount of the liquidating
distributions to which they are entitled, the holders of Preferred Shares of
such series will have no right or claim to any of the remaining assets of
Archstone. In the event that, upon any such voluntary or involuntary
liquidation, dissolution or winding up, the available assets of Archstone are
insufficient to pay the amount of the liquidating distributions on all
outstanding Preferred Shares of such series and the corresponding amounts
payable on all shares of other classes or series of capital shares of Archstone
ranking on a parity with Preferred Shares of such series in the distribution of
assets, then the holders of Preferred Shares of such series and all other such
classes or series of capital shares 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 of such series, the remaining assets of Archstone shall be
distributed among the holders of any other classes or series of capital shares
ranking junior to the Preferred Shares of such series 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 Archstone with or into any other
entity, or the sale, lease or conveyance of all or substantially all of the
property or business of Archstone, shall not be deemed to constitute a
liquidation, dissolution or winding up of Archstone.
 
                                       21
<PAGE>
 
VOTING RIGHTS
 
  Holders of the Preferred Shares of each series will not have any voting
rights, except as set forth below or in the applicable Prospectus Supplement or
as otherwise required by applicable law. The following is a summary of the
voting rights that, unless provided otherwise in the applicable Prospectus
Supplement, will apply to each series of Preferred Shares.
 
  If six quarterly dividends (whether or not consecutive) payable on the
Preferred Shares of such series or any other series of Preferred Shares ranking
on a parity with such series of Preferred Shares with respect in each case to
the payment of dividends, amounts upon liquidation, dissolution and winding up
("Parity Shares") are in arrears, whether or not earned or declared, the number
of Trustees then constituting the Board will be increased by two, and the
holders of Preferred Shares of such series, voting together as a class with the
holders of any other series of Parity Shares (any such other series, the
"Voting Preferred Shares"), will have the right to elect two additional
trustees to serve on the Board at any annual meeting of shareholders or a
properly called special meeting of the holders of Preferred Shares of such
series and such Voting Preferred Shares and at each subsequent annual meeting
of shareholders until all such dividends and dividends for the current
quarterly period on the Preferred Shares of such series and such other Voting
Preferred Shares have been paid or declared and set aside for payment. Such
voting rights will terminate when all such accrued and unpaid dividends have
been declared and paid or set aside for payment. The term of office of all
trustees so elected will terminate with the termination of such voting rights.
For so long as Security Capital Group Incorporated ("Security Capital Group")
and certain of its affiliates beneficially own in excess of 10% of the
outstanding Common Shares, in any such vote by holders of Preferred Shares of
such series, Security Capital Group and certain of its affiliates shall vote
their Preferred Shares of such series, if any, in the same respective
percentages as the Preferred Shares of such series and Voting Preferred Shares
that are not held by such persons.
 
  The approval of two-thirds of the outstanding Preferred Shares of such series
and all other series of Voting Preferred Shares similarly affected, voting as a
single class, is required in order to (i) amend Archstone's Declaration of
Trust to affect materially and adversely the rights, preferences or voting
power of the holders of the Preferred Shares of such series or the Voting
Preferred Shares; (ii) enter into a share exchange that affects the Preferred
Shares of such series, consolidate with or merge into another entity, or permit
another entity to consolidate with or merge into Archstone, unless in each such
case each Preferred Share of such series remains outstanding without a material
and adverse change to its terms and rights or is converted into or exchanged
for preferred shares of the surviving entity having preferences, conversion or
other rights, voting powers, restrictions, limitations as to dividends,
qualifications and terms or conditions of redemption thereof identical to that
of a Preferred Share of such series (except for changes that do not materially
and adversely affect the holders of the Preferred Shares of such series); or
(iii) authorize, reclassify, create, or increase the authorized amount of any
class of shares having rights senior to the Preferred Shares of such series
with respect to the payment of dividends or amounts upon liquidation,
dissolution or winding up. However, Archstone may create additional classes of
Parity Shares and other series of Preferred Shares ranking junior to such
series of Preferred Shares with respect in each case to the payment of
dividends, amounts upon liquidation, dissolution and winding up ("Junior
Shares"), increase the authorized number of Parity Shares and Junior Shares and
issue additional series of Parity Shares and Junior Shares without the consent
of any holder of Preferred Shares of such series.
 
  Except as provided above and as required by law, the holders of Preferred
Shares of each series will not be entitled to vote on any merger or
consolidation involving Archstone or a sale of all or substantially all of the
assets of Archstone.
 
CONVERSION RIGHTS
 
  The terms and conditions, if any, upon which Preferred Shares of any series
are 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 of such series are convertible,
the conversion price (or manner of calculation thereof), the conversion period,
provisions as to whether conversion will be at the option of
 
                                       22
<PAGE>
 
the holders of the Preferred Shares of such series or Archstone, the events
requiring an adjustment of the conversion price and provisions affecting
conversion in the event of the redemption of the Preferred Shares of such
series.
 
RESTRICTIONS ON OWNERSHIP
 
  As discussed below under "Description of Common Shares--Restriction on Size
of Holdings," for Archstone 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 by five or fewer
individuals at any time during the last half of a taxable year, and the capital
stock must be beneficially owned by 100 or more persons during at least 335
days of Archstone's taxable year of 12 months. Therefore, the Articles
Supplementary for each series of Preferred Shares will contain certain
provisions restricting the ownership and transfer of the Preferred Shares (the
"Preferred Shares Ownership Limit Provision"). Except as otherwise described in
the applicable Prospectus Supplement relating thereto, the provisions of each
Articles Supplementary relating to the Preferred Shares Ownership Limit will
provide (as in the case of the Series A Preferred Shares, the Series B
Preferred Shares and the Series C Preferred Shares) as summarized below.
 
  The Preferred Shares Ownership Limit Provision will provide that, subject to
certain exceptions contained in such Articles Supplementary, no person, or
persons acting as a group, may beneficially own more than 25% of any series of
Preferred Shares outstanding at any time, except as a result of Archstone's
redemption of Preferred Shares. Shares acquired in excess of the Preferred
Shares Ownership Limit Provision must be redeemed by Archstone at a price equal
to the average daily per share closing sale price during the 30-day period
ending on the business day prior to the redemption date. Such redemption is not
applicable if a person's ownership exceeds the limitations due solely to
Archstone's redemption of Preferred Shares; provided that thereafter any
additional Preferred Shares acquired by such person shall be Excess Shares (as
hereinafter defined). See "Description of Common Shares--Restriction on Size of
Holdings." From and after the date of notice of such redemption, the holder of
the Preferred Shares thus redeemed shall cease to be entitled to any
distribution (other than distributions declared prior to the date of notice of
redemption), voting rights and other benefits with respect to such shares
except the right to receive payment of the redemption price determined as
described above. The Preferred Shares Ownership Limit Provision may not be
waived with respect to certain affiliates of Archstone.
 
  All certificates representing shares of Preferred Shares will bear a legend
referring to the restrictions described above.
 
                          DESCRIPTION OF COMMON SHARES
 
GENERAL
 
  The Declaration of Trust authorizes Archstone to issue up to 250,000,000
Shares of Beneficial Interest, par value $1.00 per share, consisting of Common
Shares, Preferred Shares and such other types or classes of shares of
beneficial interest as the Board may create and authorize from time to time. At
August 31, 1998 approximately 143,170,717 Common Shares were issued and
outstanding and held of record by approximately 3,080 shareholders.
 
  The following description sets forth certain general terms and provisions of
the Common Shares to which any Prospectus Supplement may relate, including a
Prospectus Supplement which provides for Common Shares issuable pursuant to
subscription offerings or rights offerings or upon conversion of Preferred
Shares which are offered pursuant to such Prospectus Supplement and convertible
into Common Shares for no additional consideration. The statements below
describing the Common Shares are in all respects subject to and qualified in
their entirety by reference to the applicable provisions of the Declaration of
Trust and Archstone's Bylaws.
 
  The outstanding Common Shares are fully paid and, except as set forth below
under "--Shareholder Liability," non-assessable. Each Common Share entitles the
holder to one vote on all matters requiring a vote of
 
                                       23
<PAGE>
 
shareholders, including the election of Trustees. Holders of Common Shares do
not have the right to cumulate their votes 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. Holders of Common Shares are
entitled to such distributions as may be declared from time to time by the
Board out of funds legally available therefor. Holders of Common Shares have no
conversion, redemption, preemptive or exchange rights to subscribe to any
securities of Archstone. In the event of a liquidation, dissolution or winding
up of the affairs of Archstone, the holders of the Common Shares are entitled
to share ratably in the assets of Archstone remaining after provision for
payment of all liabilities to creditors and payment of liquidation preferences
and accrued dividends, if any, on the Series A Preferred Shares, Series B
Preferred Shares and Series C Preferred Shares, and subject to the rights of
holders of other series of Preferred Shares, if any. The right of holders of
the Common Shares are subject to the rights and preferences established by the
Board for the Series A Preferred Shares, Series B Preferred Shares and Series C
Preferred Shares and any other series of Preferred Shares which may
subsequently be issued by Archstone. See "Description of Preferred Shares."
 
PURCHASE RIGHTS
 
  On July 11, 1994, the Board declared a dividend of one preferred share
purchase right (a "Purchase Right") for each Common Share outstanding, payable
to holders of Common Shares of record at the close of business on July 21,
1994. The holders of any additional Common Shares issued after such date and
before the redemption or expiration of the Purchase Rights are also entitled to
receive one Purchase Right for each such additional Common Share. Each Purchase
Right entitles the holder under certain circumstances to purchase from
Archstone one one-hundredth of a share of a series of participating preferred
shares, par value $1.00 per share (the "Participating Preferred Shares") at a
price of $60.00 per one one-hundredth of a Participating Preferred Share,
subject to adjustment. Purchase Rights are exercisable when a person or group
of persons acquires 20% or more of the outstanding Common Shares (49% in the
case of Security Capital Group and its affiliates) or announces a tender offer
or exchange offer for 25% or more of the outstanding Common Shares. Under
certain circumstances, each Purchase Right entitles the holder to purchase, at
the Purchase Right's then current exercise price, a number of Common Shares
having a market value of twice the Purchase Right's exercise price. The
acquisition of Archstone pursuant to certain mergers or other business
transactions would entitle each holder to purchase, at the Purchase Right's
then current exercise price, a number of the acquiring company's common shares
having a market value at the time equal to twice the Purchase Right's exercise
price. The Purchase Rights held by certain 20% shareholders (other than
Security Capital Group) would not be exercisable. The Purchase Rights will
expire on July 21, 2004 and are subject to redemption in whole, but not in
part, at a price of $.01 per Purchase Right payable in cash, shares of
Archstone or any other form of consideration determined by the Board.
 
TRANSFER AGENT
 
  The transfer agent and registrar for the Common Shares is ChaseMellon
Shareholder Services, L.L.C. The Common Shares are listed on the New York Stock
Exchange (the "NYSE") under the symbol "ASN."
 
CLASSIFIED BOARD OF TRUSTEES
 
  Under the Archstone Declaration of Trust, the Board is divided into three
classes of Trustees, designated Class I, Class II and Class III. Each class
consists, as nearly as is possible, of one-third of the total number of
Trustees constituting the entire Board of Trustees. The term of office of each
Trustee is three years and until his or her successor is elected and qualifies,
subject to prior death, resignation or removal. At the 1999 annual meeting of
shareholders, Class I Trustees will be elected; at the 2000 annual meeting of
shareholders, Class II Trustees will be elected; and at the 2001 annual meeting
of shareholders, Class III Trustees will be elected. At each succeeding annual
meeting of shareholders, beginning in 2002, successors to the class of Trustees
whose term expires at such annual meeting will be elected. If the authorized
number of Trustees constituting the Board of Trustees is changed, any increase
or decrease will be apportioned among the classes so as to maintain the number
of Trustees in each class as nearly equal as possible, and any additional
Trustee of any class elected to
 
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<PAGE>
 
fill a vacancy resulting from an increase in such class will hold office until
the next annual meeting of shareholders, but in no case will a decrease in the
number of Trustees constituting the Board of Trustees shorten the term of any
incumbent Trustee. The staggered board provision is designed to provide for a
certain level of continuity of membership in the Board of Trustees. Such
continuity provides Archstone with consistency in management and business
approach over time. The staggered board provision may have the effect of making
it more difficult for a third party to acquire control of Archstone without the
consent of the Board of Trustees.
 
RESTRICTION ON SIZE OF HOLDINGS OF SHARES
 
  For Archstone to qualify as a REIT under the Code, no more than 50% in value
of Archstone's shares (after taking into account options to acquire shares) may
be owned, directly or indirectly, by five or fewer individuals (as defined in
the Code to include certain entities and constructive ownership among specified
family members) during the last half of a taxable year (other than the first
taxable year) or during a proportionate part of a short taxable year.
Archstone's shares must also be beneficially owned (other than during the first
taxable year) by 100 or more persons during at least 335 days of a taxable year
or during a proportionate part of a shorter taxable year.
 
  Subject to certain exceptions, no holder is permitted to own, or be deemed to
own by virtue of the attribution provisions of the Code, more than 9.8% (49% in
the case of Security Capital Group) in number of shares or value, of the
outstanding Shares (the "Ownership Limit"). The Board, upon receipt of a ruling
from the IRS or an opinion of counsel or other evidence satisfactory to the
Board and upon such other conditions as the Board may direct, may also exempt a
proposed transferee from the Ownership Limit. The proposed transferee must give
written notice to Archstone of the proposed transfer at least 30 days prior to
any transfer which, if consummated, would result in the intended transferee
owning Shares in excess of the Ownership Limit. The Board may require such
opinions of counsel, affidavits, undertakings or agreements as it may deem
necessary or advisable in order to determine or ensure Archstone's status as a
REIT. Any transfer of Shares that would (i) create a direct or indirect
ownership of Shares in excess of the Ownership Limit, (ii) result in Shares
being beneficially owned by fewer than 100 persons (determined without
reference to any rules of attribution) as provided in Section 856(a) of the
Code or (iii) result in Archstone being "closely held" within the meaning of
Section 856(h) of the Code, shall be null and void ab initio, and the intended
transferee will acquire no rights to Shares. The foregoing restrictions on
transferability and ownership will not apply if the Board determines that it is
no longer in the best interests of Archstone to attempt to qualify, or to
continue to qualify, as a REIT. The Declaration of Trust excludes Security
Capital Group and its affiliates from the foregoing ownership restriction to
the extent that Security Capital Group beneficially owns 49% or less of
Archstone's outstanding shares.
 
  Any shares the purported transfer of which would result in a person owning
Shares in excess of the Ownership Limit or cause Archstone to become "closely
held" under Section 856(h) of the Code that is not otherwise permitted as
provided above will constitute excess shares ("Excess Shares"), which will be
transferred pursuant to the Declaration of Trust to a party not affiliated with
Archstone designated by Archstone as the trustee of a trust for the exclusive
benefit of an organization or organizations described in Sections 170(b)(1)(A)
and 170(c) of the Code and identified by the Board as the beneficiary or
beneficiaries of the trust (the "Charitable Beneficiary"), until such time as
the Excess Shares are transferred to a person whose ownership will not violate
the restrictions on ownership. While these Excess Shares are held in trust,
distributions on such Excess Shares will be paid to the trust for the benefit
of the Charitable Beneficiary and may only be voted by the trustee for the
benefit of the Charitable Beneficiary. Subject to the Ownership Limit, the
Excess Shares will be transferred by the trustee at the direction of Archstone
to any person (if the Excess Shares would not be Excess Shares in the hands of
such person). The purported transferee will receive the lesser of (i) the price
paid by the purported transferee for the Excess Shares (or, if no consideration
was paid, fair market value on the day of the event causing the Excess Shares
to be held in trust) and (ii) the price received from the sale or other
disposition of the Excess Shares held in trust. Any proceeds in excess of the
amount payable to the purported transferee will be paid to the Charitable
Beneficiary. In addition, such Excess Shares held in trust are subject to
purchase by Archstone for a 90-day period at a purchase price equal to the
lesser of (i) the price paid for the Excess Shares by the purported
 
                                       25
<PAGE>
 
transferee (or, if no consideration was paid, fair market value at the time of
the event causing the shares to be held in trust) and (ii) the fair market
value of the Excess Shares on the date Archstone elects to purchase. Fair
market value, for these purposes, means the last reported sales price reported
on the NYSE on the trading day immediately preceding the relevant date, or if
not then traded on the NYSE, the last reported sales price on the trading day
immediately preceding the relevant date as reported on any exchange or
quotation systems over or through any exchange or quotation system, then the
market price on the relevant date as determined in good faith by the Board.
 
  From and after the purported transfer to the purported transferee of the
Excess Shares, the purported transferee will cease to be entitled to
distribution (other than liquidating distributions), voting rights and other
benefits with respect to the Excess Shares except the right to payment on the
transfer of the Excess Shares as described above. Any distribution paid to a
purported transferee on Excess Shares prior to the discovery by Archstone that
such Excess Shares have been transferred in violation of the provisions of the
Declaration of Trust will be repaid, upon demand, to Archstone, which will pay
any such amounts to the trust for the benefit of the Charitable Beneficiary. If
the foregoing transfer restrictions are determined to be void, invalid or
unenforceable by any court of competent jurisdiction, then the purported
transferee of any Excess Shares may be deemed, at the option of Archstone, to
have acted as an agent on behalf of Archstone in acquiring such Excess Shares
and to hold such Excess Shares on behalf of Archstone.
 
  All certificates evidencing shares will bear a legend referring to the
restrictions described above.
 
  All persons who own, directly or by virtue of the attribution provisions of
the Code, more than 5% (or such other percentage between 0.5% and 5%, as
provided in the rules and regulations promulgated under the Code) of the number
or value of Archstone's outstanding shares must give a written notice
containing certain information to Archstone by January 31 of each year. In
addition, each shareholder is upon demand required to disclose to Archstone in
writing such information with respect to the direct, indirect and constructive
ownership of Archstone shares as the Board deems reasonably necessary to comply
with the provisions of the Code applicable to a REIT, to determine Archstone's
status as a REIT, to comply with the requirements of any taxing authority or
governmental agency or to determine any such compliance.
 
  The ownership limitations under the Declaration of Trust are designed to
protect the REIT status of Archstone. The limitations could have the effect of
discouraging a takeover or other transaction in which holders of some, or a
majority, of the Common Shares might receive a premium for their shares over
the then prevailing market price or which such holders might believe to be
otherwise in their best interest.
 
INDEMNIFICATION OF TRUSTEES AND OFFICERS
 
  The Maryland statutory law governing REITs permits a REIT to indemnify or
advance expenses to trustees, officers, employees and agents of the REIT to the
same extent as is permitted for directors, officers, employees and agents of a
Maryland corporation under Maryland statutory law. Under the Declaration of
Trust, Archstone is required to indemnify each Trustee, officer, employee and
agent to the fullest extent permitted by Maryland law, as amended from time to
time, in connection with any threatened, pending or completed action, suit or
proceeding, whether civil, criminal, administrative or investigative, by reason
of the fact that he or she was a Trustee, officer, employee or agent of
Archstone or is or was serving at the request of Archstone as a director,
trustee, officer, partner, employee or agent of another foreign or domestic
corporation, partnership, joint venture, trust, other enterprise or employee
benefit plan, from all claims and liabilities to which such person may become
subject by reason of service in such capacity and to pay or reimburse
reasonable expenses, as such expenses are incurred, of each Trustee in
connection with any such proceedings. The Board believes that the
indemnification provision will enhance Archstone's ability to attract and
retain superior Trustees and officers for Archstone and subsidiaries of
Archstone.
 
  Additionally, Archstone has entered into indemnity agreements with each of
its officers and Trustees which provide for reimbursement of all expenses and
liabilities of such officer or Trustee, arising out of any lawsuit or claim
against such officer or Trustee due to the fact that he was or is serving as an
officer or Trustee, except for
 
                                       26
<PAGE>
 
liabilities and expenses (i) the payment of which is judicially determined to
be unlawful, (ii) relating to claims under Section 16(b) of the Exchange Act,
or (iii) relating to judicially determined criminal violations.
 
SHAREHOLDER LIABILITY
 
  Both the Maryland statutory law governing REITs and the Declaration of Trust
provide that shareholders shall not be personally or individually liable for
any debt, act, omission or obligation of Archstone or the Board. The
Declaration of Trust further provides that Archstone shall indemnify and hold
each shareholder harmless from all claims and liabilities to which the
shareholder may become subject by reason of his or her being or having been a
shareholder and that Archstone shall reimburse each shareholder for all legal
and other expenses reasonably incurred by the shareholder in connection with
any such claim or liability, provided that such shareholder gives Archstone
prompt notice of any such claim or liability and permits Archstone to conduct
the defense thereof. In addition, Archstone is required to, and as a matter or
practice does, insert a clause in its management and other contracts providing
that shareholders assume no personal liability for obligations entered into on
behalf of Archstone. Nevertheless, with respect to tort claims, contractual
claims where shareholder liability is not so negated, claims for taxes and
certain statutory liability, the shareholders may, in some jurisdictions, be
personally liable to the extent that such claims are not satisfied by
Archstone. Inasmuch as Archstone carries public liability insurance which it
considers adequate, any risk of personal liability to shareholders is limited
to situations in which Archstone's assets plus its insurance covered would be
insufficient to satisfy the claims against Archstone and its shareholders.
 
                       FEDERAL INCOME TAX CONSIDERATIONS
 
  Archstone intends to operate in a manner that permits it to satisfy the
requirements for taxation as a REIT under the applicable provisions of the
Code. No assurance can be given, however, that such requirements will be met.
The following is a description of the federal income tax consequences to
Archstone and its shareholders of the treatment of Archstone as a REIT. Since
these provisions are highly technical and complex, each prospective purchaser
of the Offered Securities is urged to consult his or her own tax advisor with
respect to the federal, state, local, foreign and other tax consequences of the
purchase, ownership and disposition of the Offered Securities.
 
  Based upon certain representations of Archstone with respect to the facts as
set forth and explained in the discussion below, in the opinion of Mayer, Brown
& Platt, counsel to Archstone, Archstone has been organized in conformity with
the requirements for qualification as a REIT, and its proposed method of
operation described in this Prospectus and as represented by management will
enable it to satisfy the requirements for such qualification.
 
  This opinion is conditioned upon certain representations made by Archstone as
to certain factual matters relating to Archstone's organization and intended or
expected manner of operation. In addition, this opinion is based on the law
existing and in effect on the date hereof. Archstone's qualification and
taxation as a REIT will depend on Archstone's ability to meet on a continuing
basis, through actual operating results, asset composition, distribution levels
and diversity of stock ownership, the various qualification tests imposed under
the Code discussed below. Mayer, Brown & Platt will not review compliance with
these tests on a continuing basis. No assurance can be given that Archstone
will satisfy such tests on a continuing basis.
 
  In brief, if certain detailed conditions imposed by the REIT provisions of
the Code are met, entities such as Archstone, that invest primarily in real
estate and that otherwise would be treated for federal income tax purposes as
corporations, are generally not taxed at the corporate level on their "REIT
taxable income" that is currently distributed to shareholders. This treatment
substantially eliminates the "double taxation" (at both the corporate and
shareholder levels) that generally results from the use of corporations.
However, as discussed in greater detail below, such an entity remains subject
to tax in certain circumstances even if it qualifies as a REIT.
 
                                       27
<PAGE>
 
  If Archstone fails to qualify as a REIT in any year, however, it will be
subject to federal income taxation as if it were a domestic corporation, and
its shareholders will be taxed in the same manner as shareholders of ordinary
corporations. In this event, Archstone could be subject to potentially
significant tax liabilities, and therefore the amount of cash available for
distribution to its shareholders would be reduced or eliminated.
 
  The Board believes that Archstone has been organized and operated and
currently intends that Archstone will continue to operate in a manner that
permits it to qualify as a REIT. There can be no assurance, however, that this
expectation will be fulfilled, since qualification as a REIT depends on
Archstone continuing to satisfy numerous asset, income and distribution tests
described below, which in turn will be dependent in part on Archstone's
operating results.
 
  The following summary is based on the Code, its legislative history,
administrative pronouncements, judicial decisions and United States Treasury
Department ("Treasury") regulations, subsequent changes to any of which may
affect the tax consequences described herein, possibly on a retroactive basis.
The following summary is not exhaustive of all possible tax considerations and
does not give a detailed discussion of any state, local, or foreign tax
considerations, nor does it discuss all of the aspects of federal income
taxation that may be relevant to a prospective shareholder in light of his or
her particular circumstances or to certain types of shareholders (including
insurance companies, tax-exempt entities, financial institutions or broker-
dealers, foreign corporations and persons who are not citizens or residents of
the United States) subject to special treatment under the federal income tax
laws.
 
TAXATION OF ARCHSTONE
 
 General
 
  In any year in which Archstone qualifies as a REIT, in general it will not be
subject to federal income tax on that portion of its REIT taxable income or
capital gain which is distributed to shareholders. Archstone may, however, be
subject to tax at normal corporate rates upon any taxable income or capital
gain not distributed. Under recently enacted legislation, to the extent that
Archstone elects to retain and pay income tax on its net long-term capital
gain, shareholders are required to include their proportionate share of
Archstone's undistributed long-term capital gain in income but receive a credit
for their share of any taxes paid on such gain by Archstone.
 
  Notwithstanding its qualification as a REIT, Archstone may also be subject to
taxation in certain other circumstances. If Archstone should fail to satisfy
either the 75% or the 95% gross income test (as discussed below), and
nonetheless maintains its qualification as a REIT because certain other
requirements are met, it will be subject to a 100% tax on the greater of the
amount by which Archstone fails to satisfy either the 75% test or the 95% test,
multiplied by a fraction intended to reflect Archstone's profitability.
Archstone will also be subject to a tax of 100% on net income from any
"prohibited transaction", as described below, and if Archstone has (i) net
income from the sale or other disposition of "foreclosure property" which is
held primarily for sale to customers in the ordinary course of business or (ii)
other non-qualifying income from foreclosure property, it will be subject to
tax on such income from foreclosure property at the highest corporate rate. In
addition, if Archstone should fail to distribute during each calendar year at
least the sum of (i) 85% of its REIT ordinary income for such year, (ii) 95% of
its REIT capital gain net income for such year and (iii) any undistributed
taxable income from prior years, Archstone would be subject to a 4% excise tax
on the excess of such required distribution over the amounts actually
distributed. To the extent that Archstone elects to retain and pay income tax
on its long-term capital gain, such retained amounts will be treated as having
been distributed for purposes of the 4% excise tax. Archstone may also be
subject to the corporate "alternative minimum tax", as well as tax in certain
situations and on certain transactions not presently contemplated. Archstone
will use the calendar year both for federal income tax purposes and for
financial reporting purposes.
 
  In order to qualify as a REIT, Archstone must meet, among others, the
following requirements:
 
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<PAGE>
 
 Share Ownership Test
 
  Archstone's shares of stock must be held by a minimum of 100 persons for at
least 335 days in each taxable year (or a proportional number of days in any
short taxable year). In addition, at all times during the second half of each
taxable year, no more than 50% in value of the stock of Archstone may be owned,
directly or indirectly and by applying certain constructive ownership rules, by
five or fewer individuals, which for this purpose includes certain tax-exempt
entities. Any stock held by a qualified domestic pension or other retirement
trust will be treated as held directly by its beneficiaries in proportion to
their actuarial interest in such trust rather than by such trust. Pursuant to
the constructive ownership rules, Security Capital's ownership of shares is
attributed to its shareholders for purposes of the 50% test. If Archstone
complies with the Treasury regulations for ascertaining its actual ownership
and did not know, or exercising reasonable diligence would not have reason to
know, that more than 50% in value of its outstanding shares of stock were held,
actually or constructively, by five or fewer individuals, then Archstone will
be treated as meeting such requirement.
 
  In order to ensure compliance with the 50% test, Archstone has placed certain
restrictions on the transfer of the shares of its stock to prevent additional
concentration of ownership. Moreover, to evidence compliance with these
requirements under Treasury regulations, Archstone must maintain records which
disclose the actual ownership of its outstanding shares of stock. In fulfilling
its obligations to maintain records, Archstone must and will demand written
statements each year from the record holders of designated percentages of
shares of its stock disclosing the actual owners of such shares (as prescribed
by Treasury regulations). A list of those persons failing or refusing to comply
with such demand must be maintained as a part of Archstone's records. A
shareholder failing or refusing to comply with Archstone's written demand must
submit with his or her tax returns a similar statement disclosing the actual
ownership of shares of Archstone's stock and certain other information. In
addition, Archstone's Charter provides restrictions regarding the transfer of
shares of its stock that are intended to assist Archstone in continuing to
satisfy the share ownership requirements. See "Description of Common Shares--
Restriction on Size of Holdings". Archstone intends to enforce the 9.8%
limitation on ownership of shares of its stock to assure that its qualification
as a REIT will not be compromised.
 
 Asset Tests
 
  At the close of each quarter of Archstone's taxable year, Archstone must
satisfy certain tests relating to the nature of its assets (determined in
accordance with generally accepted accounting principles). First, at least 75%
of the value of Archstone's total assets must be represented by interests in
real property, interests in mortgages on real property, shares in other REITs,
cash, cash items, and government securities, and qualified temporary
investments. Second, although the remaining 25% of Archstone's assets generally
may be invested without restriction, securities in this class may not exceed
either (i) in the case of securities of any non-government issuer, 5% of the
value of Archstone's total assets or (ii) 10% of the outstanding voting
securities of any one issuer. Where Archstone invests in a partnership, it will
be deemed to own a proportionate share of the partnership's assets.
 
 Gross Income Tests
 
  There are two separate percentage tests relating to the sources of
Archstone's gross income which must be satisfied for each taxable year. For
purposes of these tests, where Archstone invests in a partnership, Archstone
will be treated as receiving its share of the income and loss of the
partnership, and the gross income of the partnership will retain the same
character in the hands of Archstone as it has in the hands of the partnership.
 
  1. The 75% Test. At least 75% of Archstone's gross income for the taxable
year must be "qualifying income". Qualifying income generally includes: (i)
rents from real property (except as modified below); (ii) interest on
obligations collateralized by mortgages on, or interests in, real property;
(iii) gains from the sale or other disposition of interests in real property
and real estate mortgages, other than gain from property held primarily for
sale to customers in the ordinary course of Archstone's trade or business
("dealer property"); (iv) dividends or other distributions on shares in other
REITs, as well as gain from the sale of such shares; (v) abatements and
 
                                       29
<PAGE>
 
refunds of real property taxes; (vi) income from the operation, and gain from
the sale, of property acquired at or in lieu of a foreclosure of the mortgage
collateralized by such property ("foreclosure property"); (vii) commitment fees
received for agreeing to make loans collateralized by mortgages on real
property or to purchase or lease real property; and (viii) certain qualified
temporary investment income attributable to the investment of new capital
received by Archstone in exchange for its shares during the one-year period
following the receipt of such capital.
 
  Rents received from a resident will not, however, qualify as rents from real
property in satisfying the 75% test (or the 95% gross income test described
below) if Archstone, or an owner of 10% or more of Archstone, directly or
constructively owns 10% or more of such resident. In addition, 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 such personal property will not qualify as
rents from real property. Moreover, an amount received or accrued will not
qualify as rents from real property (or as interest income) for purposes of the
75% and 95% gross income tests if it is based in whole or in part on the income
or profits of any person, although an amount received or accrued generally will
not be excluded from "rents from real property" solely by reason of being based
on a fixed percentage or percentages of receipts or sales. Finally, for rents
received to qualify as rents from real property, Archstone generally must not
operate or manage the property or furnish or render services to residents,
other than through an "independent contractor" from whom Archstone derives no
income, except that the "independent contractor" requirement does not apply to
the extent that the services provided by Archstone are "usually or customarily
rendered" in connection with the rental of multifamily units for occupancy
only, or are not otherwise considered "rendered to the occupant for his
convenience". However a REIT is permitted to render a de minimis amount of
impermissible services to tenants, or in connection with the management of
property, and still treat amounts received with respect to that property as
rent from real property. The amount received or accrued by the REIT during the
taxable year for the impermissible services with respect to a property may not
exceed one percent of all amounts received or accrued by the REIT directly or
indirectly from the property. The amount received for any service (or
management operation) for this purpose shall be deemed to be not less than 150%
of the direct cost of the REIT in furnishing or rendering the service (or
providing the management or operation).
 
  2. The 95% Test. In addition to deriving 75% of its gross income from the
sources listed above, at least 95% of Archstone's gross income for the taxable
year must be derived from the above-described qualifying income, or from
dividends, interest or gains from the sale or disposition of stock or other
securities that are not dealer property. Dividends (other than on REIT shares)
and interest on any obligations not collateralized by an interest in real
property are included for purposes of the 95% test, but not for purposes of the
75% test.
 
  For purposes of determining whether Archstone complies with the 75% and 95%
income tests, gross income does not include income from prohibited
transactions. A "prohibited transaction" is a sale of dealer property
(excluding foreclosure property) unless such property is held by Archstone for
at least four years and certain other requirements (relating to the number of
properties sold in a year, their tax bases, and the cost of improvements made
thereto) are satisfied. See "--Taxation of Archstone--General".
 
  Even if Archstone fails to satisfy one or both of the 75% or 95% gross income
tests for any taxable year, it may still qualify as a REIT for such year if it
is entitled to relief under certain provisions of the Code. These relief
provisions will generally be available if: (i) Archstone's failure to comply
was due to reasonable cause and not to willful neglect; (ii) Archstone reports
the nature and amount of each item of its income included in the tests on a
schedule attached to its tax return; and (iii) any incorrect information on
this schedule is not due to fraud with intent to evade tax. If these relief
provisions apply, however, Archstone will nonetheless be subject to a special
tax upon the greater of the amount by which it fails either the 75% or 95%
gross income test for that year.
 
 Annual Distribution Requirements
 
  In order to qualify as a REIT, Archstone is required to make distributions
(other than capital gain dividends) to its shareholders each year in an amount
at least equal to (i) the sum of (a) 95% of Archstone's REIT taxable
 
                                       30
<PAGE>
 
income (computed without regard to the dividends paid deduction and the REIT's
net capital gain) and (b) 95% of the net income (after tax), if any, from
foreclosure property, minus (ii) the sum of certain items of non-cash income.
Such distributions must be paid in the taxable year to which they relate, or in
the following taxable year if declared before Archstone timely files its tax
return for such year and if paid on or before the first regular dividend
payment after such declaration. To the extent that Archstone does not
distribute all of its net capital gain or distributes at least 95%, but less
than 100%, of its REIT taxable income, as adjusted, it will be subject to tax
on the undistributed amount at regular capital gains or ordinary corporate tax
rates, as the case may be. Archstone may, with respect to undistributed net
long-term capital gains it received during the taxable year, designate in a
notice mailed to shareholders within 60 days of the end of the taxable year (or
in a notice mailed with its annual report for the taxable year) such amount of
such gains which its shareholders are to include in their taxable income as
long-term capital gains. Thus, if Archstone made this designation, the
shareholders of Archstone would include in their income as long-term capital
gains their proportionate share of the undistributed net capital gains as
designated by Archstone and Archstone would have to pay the tax on such gains
within 30 days of the close of its taxable year. Each shareholder of Archstone
would be deemed to have paid such shareholder's share of the tax paid by
Archstone on such gains, which tax would be credited or refunded to the
shareholder. A shareholder would increase his tax basis in his Archstone stock
by the difference between the amount of income to the holder resulting from the
designation less the holder's credit or refund for the tax paid by Archstone.
 
  Archstone intends to make timely distributions sufficient to satisfy the
annual distribution requirements. It is possible that Archstone may not have
sufficient cash or other liquid assets to meet the 95% distribution
requirement, due to timing differences between the actual receipt of income and
actual payment of expenses on the one hand, and the inclusion of such income
and deduction of such expenses in computing Archstone's REIT taxable income on
the other hand. To avoid any problem with the 95% distribution requirement,
Archstone will closely monitor the relationship between its REIT taxable income
and cash flow and, if necessary, intends to borrow funds in order to satisfy
the distribution requirement. However, there can be no assurance that such
borrowing would be available at such time.
 
  If Archstone fails to meet the 95% distribution requirement as a result of an
adjustment to Archstone's tax return by the Internal Revenue Service (the
"IRS"), Archstone may retroactively cure the failure by paying a "deficiency
dividend" (plus applicable penalties and interest) within a specified period.
 
 Failure to Quality
 
  If Archstone fails to qualify for taxation as a REIT in any taxable year and
certain relief provisions do not apply, Archstone will be subject to tax
(including applicable alternative minimum tax) on its taxable income at regular
corporate rates. Distributions to shareholders in any year in which Archstone
fails to quality as a REIT will not be deductible by Archstone, nor generally
will they be required to be made under the Code. In such event, to the extent
of current and accumulated earnings and profits, all distributions to
shareholders will be taxable as ordinary income, and subject to certain
limitations in the Code, corporate distributees may be eligible for the
dividends-received deduction. Unless entitled to relief under specific
statutory provisions, Archstone also will be disqualified from reelecting
taxation as a REIT for the four taxable years following the year during which
qualification was lost.
 
TAXATION OF ARCHSTONE'S SHAREHOLDERS
 
 Taxation of Taxable Domestic Shareholders
 
  As long as Archstone qualifies as a REIT, distributions made to Archstone's
taxable domestic shareholders out of current or accumulated earnings and
profits (and not designated as capital gain dividends) will be taken into
account by them as ordinary income and will not be eligible for the dividends-
received deduction for corporations. Distributions and undistributed amounts
that are designated as capital gain dividends will be taxed as long-term
capital gains (to the extent they do not exceed Archstone's actual net capital
gain for the taxable
 
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<PAGE>
 
year) without regard to the period for which the shareholder has held its
shares. However, corporate shareholders may be required to treat up to 20% of
certain capital gain dividends as ordinary income. To the extent that Archstone
makes distributions in excess of current and accumulated earnings and profits,
these distributions are treated first as a tax-free return of capital to the
shareholder, reducing the tax basis of a shareholder's shares by the amount of
such distribution (but not below zero), with distributions in excess of the
shareholder's tax basis taxable as capital gains (if the shares are held as a
capital asset). In addition, any dividend declared by Archstone in October,
November or December of any year and payable to a shareholder of record on a
specific date in any such month shall be treated as both paid by Archstone and
received by the shareholder on December 31 of such year, provided that the
dividend is actually paid by Archstone during January of the following calendar
year. Shareholders may not include in their individual income tax returns any
net operating losses or capital losses of Archstone. Federal income tax rules
may also require that certain minimum tax adjustments and preferences be
apportioned to Archstone shareholders.
 
  Archstone is permitted under the Code to retain and pay income tax on its net
capital gain for any taxable year. Under the Taxpayer Relief Act of 1997 (the
"1997 Act"), however, if Archstone so elects, a shareholder must include in
income such shareholder's proportionate share of Archstone's undistributed
capital gain for the taxable year and will be deemed to have paid such
shareholder's proportionate share of the income tax paid by Archstone with
respect to such undistributed capital gain. Such tax would be credited against
the shareholder's tax liability and subject to normal refund procedures. In
addition, each shareholder's basis in such shareholder's Common Shares would be
increased by the amount of undistributed capital gain (less the tax paid by
Archstone) included in the shareholder's income. Archstone has no current
intent of retaining its net capital gains.
 
  The Internal Revenue Service Restructuring and Reform Act of 1998 (the "1998
Act"), which was recently passed by Congress and signed into law by the
President, alters the holding period for taxation of capital gain income for
individuals (and for certain trusts and estates). Pursuant to the 1997 Act,
gain from the sale or exchange of certain investments held for more than 18
months was taxed at a maximum capital gain rate of 20%. Gain from the sale or
exchange of such investments held for 18 months or less, but for more than one-
year, was taxed at a maximum capital gain rate of 28%. The 1997 Act also
provided for a maximum rate of 25% for "unrecaptured section 1250 gain"
recognized on the sale or exchange of certain real estate assets. Pursuant to
the 1998 Act, property held for more than one-year (rather than 18 months) will
be eligible for the 20% and 25% capital gains rates discussed above. The 1998
Act applies to amounts taken into account on or after January 1, 1998. On
November 10, 1997, the IRS issued Notice 97-64, which provided generally that
Archstone may classify portions of its designated capital gain dividend as (i)
a 20% rate gain distribution (which would be taxed as capital gain in the 20%
group), (ii) an unrecaptured Section 1250 gain distribution (which would be
taxed as capital gain in the 25% group), or (iii) a 28% rate gain distribution
(which would be taxed as capital gain in the 28% group). Under Notice 97-64, if
no designation is made, the entire designated capital gain dividend will be
treated as a 28% rate capital gain distribution. Notice 97-64 provides that a
REIT must determine the maximum amounts that it may designate as 20% and 25%
rate capital gain dividends by performing the computation required by the Code
as if the REIT were an individual whose ordinary income was subject to a
marginal tax rate of at least 28%. Notice 97-64 has not yet been modified to
incorporate the changes made to holding periods under the 1998 Act.
 
  In general, any loss upon a sale or exchange of shares by a shareholder who
has held such shares for six months or less (after applying certain holding
period rules) will be treated as a long-term capital loss, to the extent of
distributions from Archstone required to be treated by such shareholder as
long-term capital gains.
 
 
  Shareholders of Archstone should consult their tax advisor with regard to (i)
the application of the changes made by the 1997 Act and the 1998 Act with
respect to taxation of capital gains and capital gain dividends and (ii) to
state, local and foreign taxes on capital gains.
 
 Backup Withholding
 
  Archstone will report to its domestic shareholders and to the IRS the amount
of distributions paid during each calendar year, and the amount of tax
withheld, if any, with respect thereto. Under the backup withholding rules, a
shareholder may be subject to backup withholding at applicable rates with
respect to distributions paid
 
                                       32
<PAGE>
 
unless such shareholder (i) is a corporation or comes within certain other
exempt categories and, when required, demonstrates this fact or (ii) provides a
taxpayer identification number, certifies as to no loss of exemption from
backup withholding, and otherwise complies with applicable requirements of the
backup withholding rules. A shareholder that does not provide Archstone with
its correct taxpayer identification number may also be subject to penalties
imposed by the IRS. Any amount paid as backup withholding will be credited
against the shareholder's income tax liability. In addition, Archstone may be
required to withhold a portion of capital gain distributions made to any
shareholders who fail to certify their non-foreign status to Archstone.
 
 Taxation of Tax-Exempt Shareholders
 
  The IRS has issued a revenue ruling in which it held that amounts distributed
by a REIT to a tax-exempt employees' pension trust do not constitute unrelated
business taxable income ("UBTI"). Subject to the discussion below regarding a
"pension-held REIT", based upon the ruling, the analysis therein and the
statutory framework of the Code, distributions by Archstone to a shareholder
that is a tax-exempt entity should also not constitute UBTI, provided that the
tax-exempt entity has not financed the acquisition of its shares with
"acquisition indebtedness" within the meaning of the Code, and that the shares
are not otherwise used in an unrelated trade or business of the tax-exempt
entity, and that Archstone, consistent with its present intent, does not hold a
residual interest in a real estate mortgage investment conduit.
 
  However, if any pension or other retirement trust that qualifies under
Section 401(a) of the Code ("qualified pension trust") holds more than 10% by
value of the interests in a "pension-held REIT" at any time during a taxable
year, a portion of the dividends paid to the qualified pension trust by such
REIT may constitute UBTI. For these purposes, a "pension-held REIT" is defined
as a REIT if (i) such REIT would not have qualified as a REIT but for the
provisions of the Code which look through such a qualified pension trust in
determining ownership of stock of the REIT and (ii) at least one qualified
pension trust holds more than 25% by value of the interests of such REIT or one
or more qualified pension trusts (each owning more than a 10% interest by value
in the REIT) hold in the aggregate more than 50% by value of the interests in
such REIT.
 
 Taxation of Foreign Shareholders
 
  Archstone will qualify as a "domestically-controlled REIT" so long as less
than 50% in value of its shares is held by foreign persons (i.e., nonresident
aliens and foreign corporations, partnerships, trust and estates). It is
currently anticipated that Archstone will qualify as a domestically controlled
REIT. Under these circumstances, gain from the sale of the shares by a foreign
person should not be subject to U.S. taxation, unless such gain is effectively
connected with such person's U.S. business or, in the case of an individual
foreign person, such person is present within the U.S. for more than 182 days
in such taxable year.
 
  Distributions of cash generated by Archstone's real estate operations (but
not by its sale or exchange of such communities) that are paid to foreign
persons generally will be subject to U.S. withholding tax at a rate of 30%,
unless (i) an applicable tax treaty reduces that tax and the foreign
shareholder files with Archstone the required form evidencing such lower rate
or (ii) the foreign shareholder files an IRS Form 4224 with Archstone claiming
that the distribution is "effectively connected" income. Recently promulgated
Treasury Regulations revise in certain respects the rules applicable to foreign
shareholders with respect to payments made after December 31, 1999 .
 
  Distributions of proceeds attributable to the sale or exchange by Archstone
of U.S. real property interests are subject to income and withholding taxes
pursuant to the Foreign Investment in Real Property Tax Act of 1980 ("FIRPTA"),
and may be subject to branch profits tax in the hands of a shareholder which is
a foreign corporation if it is not entitled to treaty relief or exemption.
Archstone is required by applicable Treasury Regulations to withhold 35% of any
distribution to a foreign person that could be designated by Archstone as a
capital gain dividend; this amount is creditable against the foreign
shareholder's FIRPTA tax liability.
 
 
                                       33
<PAGE>
 
  The federal income taxation of foreign persons is a highly complex matter
that may be affected by many other considerations. Accordingly, foreign
investors in Archstone should consult their own tax advisors regarding the
income and withholding tax considerations with respect to their investment in
Archstone.
 
OTHER TAX CONSIDERATIONS
 
 Archstone Development Services
 
  Archstone Development Services will pay Federal and state income taxes at the
full applicable corporate rates on its income prior to payment of any
dividends. Archstone Development Services will attempt to minimize the amount
of such taxes, but there can be no assurance whether or to the extent to which
measures taken to minimize taxes will be successful. To the extent that
Archstone Development Services is required to pay Federal, state or local
taxes, the cash available for distribution by Archstone Development Services to
its shareholders will be reduced accordingly.
 
 Possible Legislative or Other Actions Affecting Tax Consequences
 
  Prospective shareholders should recognize that the present federal income tax
treatment of an investment in Archstone may be modified by legislative,
judicial or administrative action at any time and that any such action may
affect investments and commitments previously made. The rules dealing with
federal income taxation are constantly under review by persons involved in the
legislative process and by the IRS and the Treasury, resulting in revisions of
regulations and revised interpretations of established concepts as well as
statutory changes. Revisions in federal tax laws and interpretations thereof
could adversely affect the tax consequences of an investment in Archstone.
 
 State and Local Taxes
 
  Archstone and its shareholders may be subject to state or local taxation in
various jurisdictions, including those in which it or they transact business or
reside. The state and local tax treatment of Archstone and its shareholders may
not conform to the federal income tax consequences discussed above.
Consequently, prospective shareholders should consult their own tax advisors
regarding the effect of state and local tax laws on an investment in the
Offered Securities of Archstone.
 
  EACH PROSPECTIVE PURCHASER IS ADVISED TO CONSULT WITH HIS OR HER OWN TAX
ADVISOR REGARDING THE SPECIFIC TAX CONSEQUENCES TO HIM OR HER OF THE PURCHASE,
OWNERSHIP, AND SALES OF COMMON SHARES, PREFERRED SHARES OR DEBT SECURITIES IN
AN ENTITY ELECTING TO BE TAXED AS A REAL ESTATE INVESTMENT TRUST, INCLUDING THE
FEDERAL, STATE, LOCAL, FOREIGN, AND OTHER TAX CONSEQUENCES OF SUCH PURCHASE,
OWNERSHIP, SALE AND ELECTION AND OF POTENTIAL CHANGES IN APPLICABLE TAX LAWS.
 
                              PLAN OF DISTRIBUTION
 
  Archstone may sell the Offered Securities to one or more underwriters or
dealers for public offering and sale by them or may sell the Offered Securities
to investors directly or through agents, which agents may be affiliated with
Archstone. Direct sales to investors may be accomplished through subscription
offerings or through subscription rights distributed to Archstone shareholders
and direct placements to third parties. In connection with subscription
offerings or the distribution of subscription rights to shareholders, if all
the underlying Offered Securities are not subscribed for, Archstone may sell
such unsubscribed Offered Securities to third parties directly or through
agents and, in addition, whether or not all of the underlying Offered
Securities are subscribed for, Archstone may concurrently offer additional
Offered Securities to third parties directly or through agents, which agents
may be affiliated with Archstone. Any underwriter, dealer or agent involved in
the offer and sale of the Offered Securities will be named in the applicable
Prospectus Supplement.
 
                                       34
<PAGE>
 
  The distribution of the Offered Securities may be effected from time to time
in one or more transactions at a fixed price or prices, which may be changed,
at prices related to the prevailing market prices at the time of sale or at
negotiated prices (any of which may represent a discount from the prevailing
market price). Archstone also may, from time to time, authorize underwriters
acting as Archstone's agents to offer and sell the Offered Securities upon the
terms and conditions set forth in the applicable Prospectus Supplement. In
connection with the sale of Offered Securities, underwriters may be deemed to
have received compensation from Archstone in the form of underwriting discounts
or commissions and may also receive commissions from purchasers of Offered
Securities for whom they may act as agent. Underwriters may sell Offered
Securities to or through dealers, and such dealers may receive compensation in
the form of discounts, concessions or commissions from the underwriters and/or
commissions from the purchasers for whom they may act as agent.
 
  Any underwriting compensation paid by Archstone to underwriters or agents in
connection with the offering of Offered Securities, and any discounts,
concessions or commissions allowed by underwriters to participating dealers,
will be set forth in the applicable Prospectus Supplement. Underwriters,
dealers and agents participating in the distribution of the Offered Securities
may be deemed to be underwriters, and any discounts and commissions received by
them and any profit realized by them on resale of the Offered Securities may be
deemed to be underwriting discounts and commissions, under the Securities Act.
Underwriters, dealers and agents may be entitled, under agreements entered into
with Archstone, to indemnification against and contribution toward certain
civil liabilities, including liabilities under the Securities Act. Any such
indemnification agreements will be described in the applicable Prospectus
Supplement.
 
  If so indicated in the applicable Prospectus Supplement, Archstone will
authorize dealers acting as Archstone's agents to solicit offers by certain
institutions to purchase Offered Securities from Archstone at the public
offering price set forth in such Prospectus Supplement pursuant to Delayed
Delivery Contracts ("Contracts") providing for payment and delivery on the date
or dates stated in such Prospectus Supplement. Each Contract will be for an
amount not less than, and the aggregate principal amount of Offered Securities
sold pursuant to Contracts shall be not less nor more than, the respective
amounts stated in the applicable Prospectus Supplement. Institutions with whom
Contracts, when authorized, may be made include commercial and savings banks,
insurance companies, pension funds, investment companies, educational and
charitable institutions, and other institutions but will in all cases be
subject to the approval of Archstone. Contracts will not be subject to any
conditions except (i) the purchase by an institution of the Offered Securities
covered by its Contracts shall not at the time of delivery be prohibited under
the laws of any jurisdiction in the United States to which such institution is
subject, and (ii) if the Offered Securities are being sold to underwriters,
Archstone shall have sold to such underwriters the total principal amount of
the Offered Securities less the principal amount thereof covered by Contracts.
 
  Certain of the underwriters and their affiliates may be customers of, engage
in transactions with and perform services for Archstone and its subsidiaries in
the ordinary course of business.
 
                                    EXPERTS
 
  The financial statements of Archstone as of December 31, 1997 and 1996, and
for each of the years in the three-year period ended December 31, 1997 and the
related schedule, have been incorporated by reference herein and in the
Registration Statement, in reliance upon the report of KPMG Peat Marwick LLP,
independent certified public accountants, incorporated by reference herein and
upon the authority of said firm as experts in accounting and auditing.
 
  With respect to the unaudited condensed interim financial information for the
periods ended March 31, 1998 and 1997 and June 30, 1998 and 1997 of Archstone,
incorporated by reference herein, KPMG Peat Marwick LLP have reported that they
applied limited procedures in accordance with professional standards for a
review of such information. However, their separate reports included in
Archstone's quarterly reports on Form 10-Q for the
 
                                       35
<PAGE>
 
quarters ended March 31, 1998 and June 30, 1998, incorporated by reference
herein, state that they did not audit and they do not express an opinion on
that interim financial information. Accordingly, the degree of reliance on
their reports on such information should be restricted in light of the limited
nature of the review procedures applied. The accountants are not subject to the
liability provisions of Section 11 of the Securities Act for their reports on
the unaudited interim financial information because those reports are not a
"report" or a "part" of the Registration Statement prepared or certified by the
accountants within the meaning of Section 7 and 11 of the Securities Act.
 
  The financial statements of Atlantic as of December 31, 1997 and 1996, and
for each of the three years in the period ended December 31, 1997 and the
related schedule, incorporated by reference herein have been audited by Ernst &
Young LLP, independent auditors, as set forth in their reports incorporated by
reference herein. Such financial statements have been incorporated by reference
herein in reliance upon such reports given upon the authority of such firm as
experts in accounting and auditing.
 
  With respect to the unaudited condensed interim financial information for the
periods ended March 31, 1998 and March 31, 1997 and June 30, 1998 and 1997 of
Atlantic, incorporated by reference herein, Ernst & Young LLP have reported
that they have applied limited procedures in accordance with professional
standards for a review of such information. However, they have communicated to
management that they did not audit and they do not express an opinion on that
interim financial information. Accordingly, the degree of reliance on their
reviews of such information should be restricted considering the limited nature
of the review procedures applied. The independent auditors are not subject to
the liability provisions of Section 11 of the Securities Act because their
procedures do not constitute a "report" or a "part" of the Registration
Statement prepared or certified by the auditors within the meaning of Sections
7 and 11 of the Securities Act.
 
                                 LEGAL MATTERS
 
  The validity of the Offered Securities will be passed upon for Archstone by
Mayer, Brown & Platt, Chicago, Illinois. Mayer, Brown & Platt has in the past
represented and is currently representing Archstone and certain of its
affiliates, including Security Capital Group.
 
                             AVAILABLE INFORMATION
 
  Archstone is subject to the informational requirements of the Exchange Act
and, in accordance therewith, files reports, proxy statements and other
information with the Commission. Such reports, proxy statements and other
information can be inspected and copied at the public reference facilities
maintained by the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549;
Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 60661;
and 7 World Trade Center, 13th Floor, New York, New York 10048, and are also
available on the Commission's worldwide web site at http://www.sec.gov. Copies
of such material can be obtained at prescribed rates from the Public Reference
Section of the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549.
Archstone's outstanding Common Shares, Series A Preferred Shares, Series B
Preferred Shares and Series C Preferred Shares are listed on the NYSE under the
symbols "ASN," "ASN.PFA", "ASN.PFB" and "ASN.PFC," respectively, and all such
reports, proxy statements and other information filed by Archstone with the
NYSE may be inspected at the NYSE's offices at 20 Broad Street, New York, New
York 10005.
 
                                       36
<PAGE>
 
  This Prospectus constitutes part of a registration statement on Form S-3
(together with all amendments and exhibits, the "Registration Statement") filed
by Archstone with the Commission under the Securities Act. This Prospectus does
not contain all of the information set forth in the Registration Statement,
certain parts of which are omitted in accordance with the rules and regulations
of the Commission. For further information, reference is hereby made to the
Registration Statement.
 
                           INCORPORATION BY REFERENCE
 
  There are incorporated herein by reference the following documents filed by
Archstone with the Commission (File No. 1-10272):
 
    (a) Archstone's Annual Report on Form 10-K for the fiscal year ended
  December 31, 1997;
 
    (b) Archstone's Quarterly Reports on Form 10-Q for the fiscal quarters
  ended March 31, 1998 and June 30, 1998;
 
    (c) Archstone's Current Reports on Form 8-K filed March 4, 1998, April 3,
  1998, April 23, 1998, April 28, 1998, July 7, 1998, July 15, 1998 and
  September 1, 1998;
 
    (d) The description of the Common Shares contained in Archstone's
  registration statement on Form 8-A, as amended; and
 
    (e) The description of Archstone's preferred share purchase rights
  contained in Archstone's registration statement on Form 8-A, as amended.
 
  All documents subsequently filed by Archstone pursuant to Sections 13(a),
13(c), 14 or 15(d) of the Exchange Act prior to the termination of the offering
of the Offered Securities, shall be deemed to be incorporated by reference in
this Prospectus and to be a part hereof from the date of filing of such
documents. Any statement contained herein or in a document incorporated or
deemed to be incorporated by reference herein shall be deemed to be modified or
superseded for purposes of this Prospectus to the extent that a statement
contained herein, or in any subsequently filed document which is incorporated
or is deemed to be incorporated by reference herein, modifies or supersedes
such statement. Any such statement so modified or superseded shall not be
deemed, except as so modified or superseded, to constitute a part of this
Prospectus.
 
  Archstone will provide without charge to each person, including any
beneficial owner, to whom a copy of this Prospectus is delivered, upon the
written or oral request of such person, a copy of any or all of the information
incorporated herein by reference, other than exhibits to such information
unless such exhibits are specifically incorporated by reference into such
documents. Requests should be addressed to Secretary, Archstone Communities
Trust, 7670 South Chester Street, Englewood, Colorado 80112, telephone number:
(303) 708-5959.
 
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