As filed with the Securities and Exchange Commission on March 3, 2000.

                                                 Registration Statement No.333-
- -------------------------------------------------------------------------------



                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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


                                    FORM S-3

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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


                               ACADIA REALTY TRUST
            --------------------------------------------------------
             (Exact name of registrant as specified in its charter)


          Maryland                                     23-2715194
- -------------------------------------      ------------------------------------
   (State or other jurisdiction of         (I.R.S. Employer Identification No.)
    incorporation or organization)

                            20 Soundview Marketplace
                         Port Washington, New York 11050
                                 (516) 767-8830
 ------------------------------------------------------------------------------
                   (Address, including zip code, and telephone
    number, including area code, of registrant's principal executive offices)

                                  Ross Dworman
                               Acadia Realty Trust
                            20 Soundview Marketplace
                         Port Washington, New York 11050
                                 (516) 767-8830
 ------------------------------------------------------------------------------
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                    Copy to:
                            Mark Schonberger, Esquire
                                Battle Fowler LLP
                               75 East 55th Street
                            New York, New York 10022
                                 (212) 856-7000


Approximate date of commencement of proposed sale to the public: From time to
time or at one time after the effective date of this Registration Statement.

If the only securities being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box. [__]


909738.9






If any of the  securities  being  registered on this Form are to be offered on a
delayed or continuous  basis  pursuant to Rule 415 under the  Securities  Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [ X ]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the  Securities  Act  registration  statement  number of the  earlier  effective
registration statement for the same offering. [__]

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

If delivery  of the  prospectus  is  expected  to be made  pursuant to Rule 434,
please check the following box. [__]

                         CALCULATION OF REGISTRATION FEE


Title of Each           Amount to be         Proposed Maximum          Proposed Maximum              Amount of
Class of Securities     Registered           Offering Price Per        Aggregate Offering Price      Registration Fee
to be Registered                             Unit (2)

                                                                                         
common shares,          26,719,319(1)        $5.03125                  $134,431,573.72               $35,489.94
$0.001 par value
per share


(1)      Includes  10,658,081  shares  potentially   issuable  in  exchange  for
         10,363,147  regular  limited  partnership  interests  in Acadia  Realty
         Limited Partnership and 2,212 preferred limited  partnership  interests
         in Acadia Realty Limited Partnership.

(2)      Estimated solely for the purpose of determining the Registration Fee in
         accordance  with Rule  457(c) of the  rules and  regulations  under the
         Securities Act of 1933, as amended.  Pursuant to Rule 457, the proposed
         maximum  offering price per share of common shares of the Registrant is
         based upon the average of the high and low reported sales prices of the
         common shares on the New York Stock Exchange Composite Transaction Tape
         on February 25, 2000.

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



909738.9
                                        2





The  information in this  Prospectus is not complete and may be changed.  We may
not sell  these  securities  until the  registration  statement  filed  with the
Securities and Exchange Commission is effective. This Prospectus is not an offer
to  sell  these  securities  and it is not  soliciting  an  offer  to buy  these
securities in any state where the offer or sale is not permitted.


                    Subject to Completion Dated March 3, 2000

PROSPECTUS
- ----------
                               ACADIA REALTY TRUST
                 26,719,319 Common Shares of Beneficial Interest

         This  Prospectus  relates  to    Restrictions on Transfer" (p.13).
the  offer  and sale from time to time
by  the  persons   listed   under  the             The   Selling   Shareholders,
"Selling Shareholders" section of this    from  time  to  time,  may  offer  the
Prospectus of up to 26,719,319  shares    common   shares    covered   by   this
of  Acadia   Realty   Trust's   common    prospectus   on  the  New  York  Stock
shares.  Throughout  this  Prospectus,    Exchange or in other markets where our
the terms "we",  "us",  "our company",    common  shares  may trade at prices to
"the   company",   "the   trust"   and    which they agree.
"Acadia"  are all used in reference to
Acadia Realty  Trust,  a Maryland real             The Selling Shareholders will
estate investment trust formerly known    pay any brokerage  fees or commissions
as  Mark  Centers   Trust.   The  term    relating  to the  sales by  them.  See
"operating  partnership"  is  used  in    "Plan  of  Distribution"  (p.35).  The
reference  to  Acadia  Realty  Limited    registration     of    the     Selling
Partnership,    a   Delaware   limited    Shareholders'    shares    does    not
partnership,  formerly  known  as Mark    necessarily mean that any of them will
Centers Limited Partnership,  which is    sell  their  shares.  Certain  of  the
a  majority-owned  subsidiary  of  the    Selling  Shareholders are obligated by
trust.  Lastly, the term "OP Units" is    contract  not  to  sell  their  common
used in  reference to units of limited    shares until  November 16, 2000 unless
partnership  interest in the Operating    such  obligation  is terminated on the
Partnership.                              occurrence of certain events.

         We  have  issued   16,061,238             We  will  not   receive   any
restricted common shares of beneficial    proceeds   from  the  sale  of  common
interest     to    certain     Selling    shares by the Selling Shareholders. We
Shareholders  and  may  issue  further    have agreed to bear  certain  expenses
shares  to the  extent  certain  other    of   registering   the  common  shares
Selling  Shareholders  exchange  their    covered  by  this   prospectus   under
10,658,081 OP Units, including 294,934    Federal and state securities laws.
OP Units  issuable upon the conversion
of  preferred  OP Units,  for an equal             The Selling  Shareholders and
number of common shares. We are filing    any  agents  or  broker-dealers   that
the  registration  statement  of which    participate    with    them   in   the
this  prospectus  is a part to fulfill    distribution  of common shares covered
our  contractual  obligations  to  the    by  this   prospectus  may  be  deemed
holders of securities  discussed above    "underwriters"  within the  meaning of
and  to  provide   them  with   freely    the   Securities   Act  of  1933,   as
tradable securities.                      amended,  and any commissions received
                                          by them on the resale of common shares
         Our  common  shares  trade on    may  be  deemed  to  be   underwriting
the New York Stock  Exchange under the    commissions  or  discounts  under  the
symbol   "AKR."   The   shares   being    Securities    Act.    See   "Plan   of
registered     pursuant     to     the    Distribution" (p.35). See "Description
registration  statement  of which this    of  Our  Common   Shares--Registration
prospectus  is a part are  subject  to    Rights"  (p.14)  for   indemnification
certain  restrictions on ownership and    arrangements  between  Acadia  and the
transfer  designed  to  assist  us  in    Selling Shareholders.
maintaining   our  status  as  a  real
estate  investment  trust ("REIT") for
federal   income  tax  purposes.   See
"Description  of Our  Common  Shares--


         Investing in our common shares  involves  various risks. In considering
whether to purchase our common shares, you should carefully consider the matters
discussed under "Risk Factors" beginning on page 8 of this prospectus.

         Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if this
prospectus  is truthful or  complete.  Any  representation  to the contrary is a
criminal offense.

                   The date of this prospectus is ______, 2000

909738.9
                                        3





                                TABLE OF CONTENTS

                                                                            Page

WHERE YOU CAN FIND MORE INFORMATION..........................................5

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE..............................5

FORWARD-LOOKING INFORMATION..................................................6

PROSPECTUS SUMMARY...........................................................7

RISK FACTORS.................................................................8

OUR COMPANY.................................................................12

DESCRIPTION OF OUR COMMON SHARES............................................12

USE OF PROCEEDS.............................................................17

INTERESTS OF NAMED EXPERTS AND COUNSEL......................................17

FEDERAL INCOME TAX CONSIDERATIONS...........................................17

SELLING SHAREHOLDERS........................................................27

PLAN OF DISTRIBUTION........................................................35

EXPERTS  ...................................................................36

LEGAL MATTERS...............................................................36


909738.9
                                        4





                       WHERE YOU CAN FIND MORE INFORMATION

         We have filed with the  Securities  and Exchange  Commission  ("SEC") a
registration  statement  on Form S-3 under the  Securities  Act to register  the
common  shares  offered  in  this  prospectus.  This  prospectus  is part of the
registration  statement.  This  prospectus  does not contain all the information
contained in the registration statement because we have omitted certain parts of
the  registration  statement in accordance with the rules and regulations of the
SEC. For further information,  we refer you to the registration statement, which
you may read and copy at the public reference  facilities  maintained by the SEC
at Judiciary Plaza, 450 Fifth Street,  N.W., Room 1024,  Washington,  D.C. 20549
and at the SEC's Regional Offices at 7 World Trade Center, 13th Floor, New York,
New York 10048 and Citicorp Center, 500 W. Madison Street,  Suite 1400, Chicago,
Illinois  60661-2511.  You may obtain  copies at the  prescribed  rates from the
Public Reference Section of the SEC at its principal office in Washington,  D.C.
You may call the SEC at 1-800-SEC-0330 for further  information about the public
reference rooms. The SEC maintains a web site that contains  reports,  proxy and
information  statements  and other  information  regarding our company.  You may
access the SEC's web site at "http://www.sec.gov."

         We are  subject to the  informational  requirements  of the  Securities
Exchange Act of 1934, as amended.  As a result, we are required to file reports,
proxy  statements and other  information  with the SEC.  These  materials can be
copied and inspected at the locations described above. Copies of these materials
can be obtained  from the Public  Reference  Section of the SEC at 450 Judiciary
Plaza, N.W., Room 1024, Washington,  D.C. 20549, at prescribed rates. Our common
shares are listed on the New York Stock Exchange under the symbol "AKR." You may
read our reports,  proxy and other  information  statements which we file at the
offices of the NYSE at 20 Broad Street, New York, New York 10005.


                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

         The SEC allows us to "incorporate by reference" the information we file
with them,  which means that we can  disclose  important  information  to you by
referring you to those documents.  The information  incorporated by reference is
considered to be part of this  prospectus,  and  information  that we file later
with the SEC will  automatically  update  and  supersede  this  information.  We
incorporate  by reference the documents  listed below and any future  filings we
will  make  with  the SEC  under  Sections  13(a),  13(c),  14 or  15(d)  of the
Securities Exchange Act of 1934:

         o        Our Annual Report on Form 10-K for the fiscal year ended
                  December 31, 1998, filed with the SEC on March 31, 1999 (SEC
                  File No. 001-12002);

         o        Our Quarterly Report on Form 10-Q for the quarter ended March
                  31, 1999, filed with the Commission on May 17, 1999;

         o        Our Quarterly Report on Form 10-Q for the quarter ended June
                  30, 1999, filed with the Commission on August 13, 1999;

         o        Our Quarterly Report on Form 10-Q for the quarter ended
                  September 30, 1999, filed with the Commission on November 15,
                  1999;

         o        Our Definitive Proxy Statement on Schedule 14A prepared in
                  connection with our Annual Meeting of Shareholders held on
                  June 16, 1999, filed with the Commission on May 3, 1999;

        o         Our Report on Form 8-K filed with the Commission on January 5,
                  1999; and

         o        The description of our common shares of beneficial interest
                  contained in our registration statement on Form 8-A together
                  with all amendments and reports updating such description
                  dated May 21, 1993 (SEC File No. 33-6008).


909738.9
                                        5





         You may request a copy of these filings (not  including the exhibits to
such documents unless the exhibits are specifically incorporated by reference in
the  information  contained  in this  prospectus),  at no cost,  by  writing  or
telephoning us at the following address:

                               Investor Relations
                               Acadia Realty Trust
                            20 Soundview Marketplace
                         Port Washington, New York 11050
              Telephone requests may be directed to (516) 767-8830.

         This  prospectus is part of a registration  statement we filed with the
SEC. You should rely only on the information or representations provided in this
prospectus. We have authorized no one to provide you with different information.
We are not making an offer of these  securities  in any state where the offer is
not permitted.  You should not assume that the information in this prospectus is
accurate as of any date other than the date on the front of the document.

         Statements  contained  in this  prospectus  as to the  contents  of any
contract or document are not necessarily complete and in each instance reference
is made to the copy of that  contract  or  document  filed as an  exhibit to the
registration  statement or as an exhibit to another filing,  each such statement
being qualified in all respects by such reference and the exhibits and schedules
thereto.


                           FORWARD-LOOKING INFORMATION

         Certain information both included and incorporated by reference in this
prospectus may contain forward- looking statements within the meaning of Section
27A of the  Securities Act and Section 21E of the Securities and Exchange Act of
1934 and as such may involve known and unknown  risks,  uncertainties  and other
factors which may cause the actual  results,  performance or achievements of our
company  to  be  materially  different  from  future  results,   performance  or
achievements   expressed   or  implied  by  such   forward-looking   statements.
Forward-looking statements,  which are based on certain assumptions and describe
our future plans,  strategies and expectations are generally identifiable by use
of the  words  "may,"  "will,"  "should,"  "expect,"  "anticipate,"  "estimate,"
"believe,"  "intend" or "project" or the  negative  thereof or other  variations
thereon or comparable  terminology.  Factors which could have a material adverse
effect on the operations and future  prospects of our company  include,  but are
not limited to, changes in:  economic  conditions  generally and the real estate
market specifically,  legislative/regulatory  changes (including changes to laws
governing  the  taxation of REITs),  availability  of capital,  interest  rates,
competition,  supply and demand for retail space and multi-family housing in our
current and proposed market areas and general  accounting  principles,  policies
and  guidelines  applicable to REITs.  These risks and  uncertainties  should be
considered   in  evaluating   any   forward-looking   statements   contained  or
incorporated by reference herein.


909738.9
                                        6





                               PROSPECTUS SUMMARY


         This Summary only  highlights the more detailed  information  appearing
elsewhere in this prospectus or incorporated  herein by reference.  As this is a
summary, it may not contain all information that is important to you. You should
read this entire  prospectus  carefully  before deciding whether to purchase our
common shares.

                                   The Company

         We are a  fully-integrated  and  self-managed  real  estate  investment
trust. We are primarily engaged in the ownership, acquisition, redevelopment and
management of neighborhood  and community  shopping  centers,  and multi- family
properties.  We were organized in March, 1993, and until August,  1998, our name
was Mark Centers  Trust.  Our common shares trade on the New York Stock Exchange
under the symbol "AKR."

         We are formed  under the laws of the State of Maryland.  Our  principal
executive offices are located at 20 Soundview Marketplace,  Port Washington, New
York 11050. Our phone number is (516) 767-8830.

                         Securities That May Be Offered

         This prospectus  relates to the offer and sale from time to time by the
persons listed under the "Selling  Shareholders"  section of this  prospectus of
(i) up to 16,061,238 common shares and (ii) up to 10,658,081 common shares which
may be issued  upon the  exchange  of OP Units held by  certain  of the  Selling
Shareholders  including  294,933  OP  Units  issuable  upon  the  conversion  of
preferred  OP units.  We are  registering  the  common  shares  covered  by this
prospectus to satisfy our obligations under registration  rights agreements with
the Selling Shareholders.

         We will not  receive  any  cash  proceeds  from the sale of the  common
shares by the Selling Shareholders.

                                  Risk Factors

         Investing in our common shares  involves  various risks. In considering
whether to purchase our common shares, you should carefully consider the matters
discussed under "Risk Factors" beginning on page 8 of this prospectus.

                            Tax Status of the Company

         Acadia has elected to qualify as a REIT under  Sections 856 through 860
of the  Internal  Revenue  Code of 1986 in each year since  1993.  As long as we
qualify for  taxation  as a REIT,  we  generally  will not be subject to federal
income tax on that  portion of our  ordinary  income and  capital  gains that is
distributed to our  shareholders.  Even if we qualify for taxation as a REIT, we
may be subject to certain  state and local taxes on our income and  property and
to federal  income  and  excise  taxes on our  undistributed  income.  See "Risk
Factors--Risk  factors  relating to our  business as a REIT" (p.9) and  "Federal
Income Tax Considerations" (p.17) for a more detailed explanation.

909738.9
                                        7





                                  RISK FACTORS

         You should consider  carefully the following risk factors together with
all of the other  information  included or  incorporated  by  reference  in this
prospectus  before  you  decide to  purchase  our common  shares.  This  section
includes or refers to certain  forward-looking  statements.  You should refer to
the explanation of the  qualifications  and limitations on such  forward-looking
statements discussed on page 6 of this prospectus.

We could encounter problems as a result of our use of debt.

         We borrow money to pay for the  acquisition,  development and operation
of properties and for other general corporate purposes. Our declaration of trust
(as amended) and our bylaws do not limit the amount of indebtedness  that we may
incur. By borrowing  money, we expose ourselves to several  problems,  including
the following:

        o      inability to meet existing obligations;

        o      reduced access to additional debt; and

        o      loss of our property as a result of any default on existing debt.

         As of September  30,  1999,  Acadia had total  mortgage  debt of $308.6
million of which $249.5  million was  fixed-rate  and $59.1 million was variable
rate based upon either LIBOR or the lender's  commercial paper rate plus certain
spreads. Our mortgage indebtedness is generally nonrecourse to us. However, even
with respect to nonrecourse mortgage indebtedness,  we could be obligated to pay
our  lenders   deficiencies   resulting   from,   among  other  things,   fraud,
misapplication of funds and environmental liabilities.

         A downturn  in the  economy  could make it  difficult  for us to borrow
money on favorable terms. If we are unable to borrow, we might need to sell some
of our  assets  at  unfavorable  prices  in  order  to pay our  loans.  We could
encounter several problems, including:

        o         insufficient cash flow necessary to meet required payments of
                  principal and interest;

        o         an increase on variable interest rates on indebtedness; and

        o         the inability to refinance existing indebtedness on favorable
                  terms or at all.

Increase in market interest rates could have an adverse effect on the price of
our common shares.

         One of the factors that may  influence the prices for the common shares
in public trading markets will be the annual yield from our distributions on the
common  shares as  compared  to  yields on  certain  financial  instruments.  An
increase  in market  interest  rates  will  result in higher  yields on  certain
financial  instruments,  which could adversely  affect the market prices for our
common shares.

We may suffer an uninsured loss.

         We maintain comprehensive  liability,  fire, flood (where appropriate),
extended  coverage,  and rental loss insurance with respect our properties  with
policy specifications,  limits, and deductibles  customarily carried for similar
properties.  Certain types of losses,  however, may be either uninsurable or not
economically insurable, such as losses due to earthquakes, riots or acts of war.
Should an  uninsured  loss  occur,  we could lose both our  investments  in, and
anticipated cash flow from, a property.

The loss of a key executive officer could have an adverse effect on the company.


909738.9
                                        8





         Although we have entered into  employment  agreements with our Chairman
and  Chief  Executive  Officer,  Ross  Dworman  and our  President,  Kenneth  F.
Bernstein, the loss of any of their services could have an adverse effect on our
operations.

Risk factors relating to our business as a REIT:

As a real estate company, our ability to generate revenues and pay distributions
to our shareholders is affected by the risks inherent in owning real property
investments.

         We derive most of our revenue from  investments in real property.  Real
property investments are subject to different types and degrees of risk that may
reduce the value of our assets and our ability to generate revenues. The factors
that may reduce our revenues, net income and cash available for distributions to
shareholders include the following:

        o        local conditions, such as an oversupply of space or a reduction
                 in demand for real estate in an area;

        o        competition from other available space;

        o        the ability of the owner to provide adequate maintenance;

        o        insurance and variable operating costs;

        o        government regulations;

        o        changes in interest rate levels;

        o        the availability of financing;

        o        potential liability due to changes in environmental and other
                 laws; and

        o        changes in the general economic climate.

We may not be able to sell our assets if we need to do so.

         Real estate investments are relatively  illiquid,  and therefore we may
not be able to sell one or more of our  properties in order to respond  promptly
to changes in economic or other  conditions.  In addition,  the Internal Revenue
Code limits a REIT's ability to sell  properties held for fewer than four years.
Our inability to sell one or more of our properties  could harm our  performance
and ultimately our ability to make distributions to our shareholders.

We could have financial problems as a result of our tenants' financial
difficulty.

         Our  commercial  and  residential  tenants  may,  from  time  to  time,
experience downturns in their  businesses/personal  finances which may result in
their  failure to make  their  rental  payments  to us when due.  Missed  rental
payments,  in the  aggregate,  could  impair  our  funds  from  operations  and,
subsequently,  our  ability  to  make  distributions  to  our  shareholders.  In
addition,  at any time,  our tenants may seek the  protection of the  bankruptcy
laws and have their leases either rejected or terminated.  Our tenants'  failure
to affirm their leases  following  bankruptcy  could similarly  impair our funds
from operations and ability to make distributions.

Our acquisition and development of real estate could cost more than we
anticipate.

         We may acquire existing retail and multi-family  housing  properties to
the extent we can acquire these  properties on acceptable  terms. We could incur
higher than anticipated costs for improvements to these properties


909738.9
                                        9





to conform them to standards established for the intended market position. Once
improved, the properties may not perform as expected.

         We also intend to pursue retail and  multi-family  housing  development
projects.  Developing  properties  generally  carries  more risk than  acquiring
existing   properties.   For  example,   development  projects  usually  require
governmental  and  other  approvals,  which  we  may  not  be  able  to  obtain.
Furthermore,   approvals   frequently   require   the   improvement   of  public
infrastructure  or other  activities  to mitigate  the  effects of the  proposed
development,  which may cost more than we anticipate. Our development activities
will also entail other risks, including:

        o         that we will devote financial and management resources to
                  projects which may not come to fruition;

        o         that we will not complete a development project as scheduled;

        o         that we will incur higher construction costs than anticipated;

        o         that occupancy rates and rents at a completed project will be
                  less than anticipated; and

        o         that expenses at a completed development will be higher than
                  anticipated.

These risks may harm our results of operations and impair our ability to make
distributions to our shareholders.

         Integrating the aforementioned  acquisition and development  properties
into our current systems and procedures  presents a challenge to our management.
Failure to do so could  cause us  financial  harm and impair our ability to make
distributions to our shareholders.

We could incur unanticipated expenses if we fail to qualify as a REIT.

         We have elected to qualify as a REIT under the Internal  Revenue  Code.
We  believe  that  since  1993  we  have   satisfied   the  REIT   qualification
requirements.  However,  the IRS  could  challenge  our REIT  qualification  for
taxable years still subject to audit. Moreover, we may fail to qualify as a REIT
in future  years.  Qualification  as a REIT involves the  application  of highly
technical and complex  Internal Revenue Code provisions for which there are only
limited judicial or  administrative  interpretations.  For example,  in order to
qualify as a REIT,  we must derive at least 95% of our gross  income in any year
from qualifying sources,  and we must distribute annually to shareholders 95% of
our REIT  taxable  income,  excluding  net  capital  gains.  In  addition,  REIT
qualification  involves the  determination of factual matters and  circumstances
not entirely within our control.

         If we were to operate in a manner that prevented us from  qualifying as
a REIT,  or if we were to fail to qualify  for any  reason,  a number of adverse
consequences  would result. If in any taxable year we fail to qualify as a REIT,
we would not be allowed to deduct distributions to shareholders in computing our
taxable  income.  Furthermore,  we would be subject to federal income tax on our
taxable income at regular corporate rates.  Unless entitled to statutory relief,
we would also be  disqualified  from  treatment  as a REIT for the four  taxable
years following the year during which  qualification was lost. As a result,  the
funds available for distribution to our  shareholders  would be reduced for each
of the years  involved.  Although we currently  intend to operate as a qualified
REIT, future economic, market, legal, tax or other considerations may impair our
REIT  qualification  or may  cause  our board of  trustees  to  revoke  the REIT
election. See "Federal Income Tax Considerations" (p.17).

We could incur costs from environmental problems even though we did not cause,
contribute to or know about them.

         Because we own, operate,  manage and develop real estate, for liability
purposes we may be considered  under the law to be an owner or operator of those
properties  or as having  arranged for the disposal or treatment of hazardous or
toxic  substances.  As a result,  we could have to pay  removal  or  remediation
costs.  Federal,  state and local  laws often  impose  liability  regardless  of
whether the owner or operator knew of, or was responsible for, the presence of

909738.9
                                       10





the  hazardous or toxic  substances.  The presence of those  substances,  or the
failure to properly remediate them, may impair the owner's or operator's ability
to sell or rent the property or to borrow using the  property as  collateral.  A
person  who  arranges  for the  disposal  or  treatment  of  hazardous  or toxic
substances  may also be liable  for the costs of  removing  or  remediating  the
substances at a disposal or treatment facility,  whether or not that person owns
or operates the facility.  Furthermore,  environmental laws impose liability for
release  of  asbestos-containing  materials  into the air.  If we were ever held
responsible  for releasing  asbestos-containing  materials,  third parties could
seek  recovery from us for personal  injuries.  Thus, we might have to pay other
costs,  including  governmental fines and costs related to personal injuries and
property damage,  resulting from the environmental  condition of our properties,
regardless  of whether we actually  had  knowledge  of or  contributed  to those
conditions.

Rent control/stabilization legislation may reduce the rental income we receive
from residential properties.

         While  none  of  our  five   residential   properties  are  located  in
jurisdictions which have adopted rent  control/stabilization  legislation,  such
legislation may be enacted in these jurisdictions in the future.  Similarly,  we
may purchase  additional  properties in jurisdictions  where such legislation is
already in place. In either event, our income from  residential  leases could be
reduced, as could our ability to recover increases in operating expenses and the
costs of capital improvements.

Laws benefitting disabled persons may result in unanticipated expenses.

         A number of Federal,  state and local laws ensure that disabled persons
have  reasonable  access to public  buildings.  For  example,  the Fair  Housing
Amendments  Act of 1988 (the "FHAA")  requires that apartment  properties  first
occupied after March 13, 1990, be accessible to the  handicapped.  Noncompliance
with the FHAA could  result in an  imposition  of fines,  an award of damages to
private litigants,  and/or an order to correct any non-complying  feature (which
could result in substantial capital expenditures).  Although we believe that our
properties are  substantially  in compliance  with laws such as the FHAA, we may
incur unanticipated expenses associated with such laws.



909738.9
                                       11





                                   OUR COMPANY

         Our  company  (formerly  known  as  Mark  Centers  Trust)  is  a  fully
integrated   and   self-managed   REIT  focused   primarily  on  the  ownership,
acquisition, redevelopment and management of neighborhood and community shopping
centers and multi-family  properties.  All of our assets are held by, and all of
our operations are conducted through, the operating  partnership (formerly known
as Mark Centers Limited Partnership) and its majority owned partnerships.  As of
September  30,  1999,  our  company  owned  a  71%  interest  in  the  operating
partnership and the Selling  Shareholders owned the remaining 29% in the form of
OP Units,  which are exchangeable on a one-for-one  basis (subject to adjustment
for certain events) for common shares. Our company will at all times be the sole
general partner of the operating partnership.

         Our principal offices are located at 20 Soundview Marketplace, New York
11050, and our telephone number is (516) 767-8830.


                        DESCRIPTION OF OUR COMMON SHARES

         The following  description  of our common shares does not purport to be
complete and is qualified  in its  entirety by reference to our  declaration  of
trust and bylaws, each as amended and restated,  copies of which are exhibits to
the  registration  statement of which this  prospectus is a part. See "Where you
can find more information" (p.5).

General

         Under our declaration of trust, we have authority to issue  100,000,000
common shares,  par value $0.001 per share. All common shares,  when issued, are
duly authorized,  fully paid and  nonassessable.  This means that the full price
for the shares has been paid at the time of issuance and  consequently  that any
holder of such shares will not later be required to pay us any additional  money
for the same. As of September 30, 1999, 26,044,615 common shares were issued and
outstanding,  as were 10,484,143  common OP Units which are convertible into the
same number of common shares. In addition,  2,212 convertible preferred OP Units
were  issued at a price of $1,000 per Unit to certain  Selling  Shareholders  on
November 18, 1999.  These preferred OP Units,  which are convertible into common
OP Units at a  conversion  price of $7.50 per common Unit,  have a  distribution
preference and entitle the holder to a 9.0% dividend  yield.  Any OP Units which
result from the  conversion of such preferred OP Units are subject to a 12-month
lock-up  period  ending  November  16,  2000,  during  which time they cannot be
converted into common shares.


Distributions

         Common shareholders may receive distributions out of assets that we can
legally use to pay  distributions,  when and if they are authorized and declared
by our board of trustees.  Each common shareholder shares in the same proportion
as other  common  shareholders  out of the assets that we can legally use to pay
distributions after we pay or make adequate provision for all of our known debts
and  liabilities  in the event we are  liquidated,  dissolved or our affairs are
would up.

Voting Rights

         Holders  of  common  shares  have  the  power  to vote  on all  matters
presented to our  shareholders,  including  the election of trustees,  except as
otherwise  provided by Maryland law. Our  declaration of trust prohibits us from
merging or selling all or  substantially  all of our assets without the approval
of a  two-thirds  of the  outstanding  shares that are  entitled to vote on such
matters. Holders of common shares are entitled to one vote per share.



909738.9
                                       12





         There is no cumulative  voting in the election of our  trustees,  which
means that holders of more than 50% of the common shares voting for the election
of  trustees  can  elect  all of the  trustees  if they  choose to do so and the
holders of the remaining shares cannot elect any trustees.

Other Rights

         All common shares have equal  dividend,  liquidation  and other rights,
and have no preference,  appraisal or exchange rights,  except for any appraisal
rights  provided  by  Maryland  Law.  Holders  of  our  common  shares  have  no
conversion, sinking fund or redemption rights, or preemptive rights to subscribe
for any of our securities.

Restrictions on Transfer

         To qualify as a REIT under the Internal  Revenue Code of 1986,  we must
satisfy certain ownership requirements. Specifically, not more than 50% in value
of our outstanding common shares may be owned,  directly or indirectly,  by five
or fewer individuals (as defined in the Internal Revenue Code of 1986 to include
certain  entities) during the last half of a taxable year, and the common shares
must be beneficially  owned by 100 or more persons during at least 335 days of a
taxable  year of  twelve  months  or  during a  proportionate  part of a shorter
taxable year. We must also satisfy  certain income  requirements to maintain our
REIT status.  One such  requirement is that at least 75% of our company's  gross
income for each  calendar  year must  consist of rents  from real  property  and
income from certain other real property investments.  This is complicated by the
fact that the rents  received by the operating  partnership  will not qualify as
rents from real property if we own, actually or  constructively,  10% or more of
the  ownership  interests  in  our  lessees,   within  the  meaning  of  section
856(d)(2)(B)  of the  Internal  Revenue Code of 1986,  as amended.  See "Federal
Income Tax Considerations--Requirements for Qualification--Income Tests" (p.19).

         Because  our  board of  trustees  believes  it is  essential  for us to
continue to qualify as a REIT,  our  declaration  of trust  contains  provisions
aimed at satisfying the requirements described above. In regard to the ownership
requirements,  the  declaration  of  trust  provides  that  subject  to  certain
exceptions,  no person may own, or be deemed to own by virtue of the attribution
provisions of the Internal Revenue Code of 1986, more than 4% of our outstanding
common   shares.   The  Trustees  may  waive  this  4%  limitation  if  evidence
satisfactory  to them or our tax counsel is presented  that such  ownership will
not jeopardize our status as a REIT. As a condition of such waiver, the Trustees
may require opinions of counsel  satisfactory to them and/or an undertaking from
the applicant with respect to preserving our REIT status.

         The trustees of Mark Centers  Trust waived the 4% ownership  limitation
in August,  1998 when certain affiliates of RD Capital,  Inc. received shares in
consideration of their contribution to Mark Center Limited  Partnership.  On two
subsequent occasions,  our trustees permitted investors owing in excess of 4% of
the trust's  outstanding shares to acquire additional shares through open market
purchases transacted during specified three-month windows.

         In addition,  our  declaration  of trust  provides  that any  purported
transfer or  issuance of shares or  securities  transferable  into shares  which
would (i) violate the 4% limitation described above, (ii) result in shares being
owned by fewer than 100  persons  for  purposes  of the REIT  provisions  of the
Internal  Revenue Code of 1986, (iii) result in Acadia being "closely held" with
the meaning of Section  856(h) of the  Internal  Revenue  Code of 1986,  or (iv)
otherwise  jeopardize our REIT status under the Internal Revenue Code (including
a transfer which would cause Acadia to own, actually or constructively,  9.8% or
more of the ownership  interests in one of our lessees) will be null and void ab
initio (from the beginning). Moreover, common shares transferred, or proposed to
be transferred, in contravention of the above will be subject to purchase by the
Acadia  at a price  equal  to the  lesser  of (i) the  price  stipulated  in the
challenged transaction and (ii) the fair market value of such shares (determined
in accordance with the rules set forth in our declaration of trust).

         All certificates representing the common shares bear a legend referring
to the restrictions described above.



909738.9
                                       13





         The  ownership  limitations  described  above  could have the effect of
delaying,  deferring  or  preventing  a takeover or other  transaction  in which
holders of some,  or a majority,  of 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.

Registration Rights

         The Selling  Shareholders and certain other holders of OP Units entered
into Registration  Rights and Lock-Up Agreements with Acadia whereby the Selling
Shareholders and OP Unit holders agreed not to sell or otherwise  transfer their
common shares and Units during a specified lockup period in exchange for certain
registration  rights.  We are filing the  registration  statement  of which this
prospectus is a part pursuant to the such agreements.

         The  Registration  Rights and Lock-Up  Agreements  provide that we will
indemnify and hold harmless the Selling  Shareholders  against  losses,  claims,
damages,   or  liabilities  (or  actions  in  respect  thereof)  to  which  such
individuals  may become  subject under Federal and state  securities  laws which
arise out of (i) any untrue  statement or alleged untrue statement of a material
fact  contained in a  registration  statement  (or any  amendment or  supplement
thereto)  pursuant  to which  their  common  shares  were  registered  under the
Securities Act of 1933, as amended, (ii) the omission or alleged omission from a
registration  statement  of a material  fact  required  to be stated  therein or
necessary  to make the  statements  therein  not  misleading,  (iii) any  untrue
statement  or alleged  untrue  statement  of a material  fact  contained  in any
prospectus,  or (iv)  the  omission  or  alleged  omission  from a  registration
statement of a material fact necessary in order to make the statements  therein,
in the light of the  circumstances  under which they were made, not  misleading.
The  Registration  Rights  and  Lock-Up  Agreements  also  provide  that we will
reimburse certain of the Selling  Shareholders  (and the officers,  directors or
controlling  persons of those Selling  Shareholders)  for any legal or any other
expenses   reasonably   incurred  by  such   individuals   in  connection   with
investigating or defending any such loss, claim, damage, liability or action.

         However,  the  indemnity  discussed  above  does not apply to a Selling
Shareholder if the loss, claim, damage or liability arises out of (i) any untrue
statement or omission made by Acadia in a  registration  statement,  preliminary
prospectus  or prospectus  (or any amendment or supplement  thereto) in reliance
upon,  and in  conformity  with,  written  information  furnished to Acadia by a
Selling  Shareholder  specifically  for  use in,  or the  preparation  of,  such
registration  statement,  preliminary prospectus or prospectus (or any amendment
or supplement thereto), or (ii) such Selling Shareholder's failure to deliver an
amended or  supplemental  prospectus,  after having been provided  copies of any
such amended or  supplemental  prospectus  by Acadia,  if such loss,  liability,
claim, damage or expense would not have arisen had such delivery occurred.

Transfer Agent and Registrar

         The  transfer  agent and  registrar  for our common  shares is American
Stock Transfer & Trust Company with has an address at 40 Wall Street,  New York,
NY 10005.

Declaration of Trust and Bylaw Provisions and Certain Provisions of Maryland Law

         Number of  Trustees;  Election of Trustees,  Removal of  Trustees,  the
Filling  of  Vacancies.  Our  declaration  of trust  provides  that the board of
trustees  will consist of not less than two nor more than fifteen  persons,  and
that the number of  trustees  will be set by the  trustees  then in office.  Our
board  currently  consists of six  trustees,  each of whom serves until the next
annual  meeting of  shareholders  and until his  successor  is duly  elected and
qualified.  Election of each trustee requires the approval of a plurality of the
votes cast by the  holders of common  shares in person or by proxy at our annual
meeting. The board of trustees does not have a nominating committee.  Our bylaws
provide that the  shareholders  may, at any time,  remove any  trustee,  with or
without cause, by the  affirmative  vote of a majority of all the votes entitled
to be cast on the matter and may elect a successor to fill any resulting vacancy
for the balance of the term of the removed  trustee.  Any vacancy  (including  a
vacancy created by an increase in the number of trustees) will be filled, at any
regular meeting or at any special meeting called for that purpose, by a majority
of the trustees.


909738.9
                                       14





         Limitation of Liability and  Indemnification  of Trustees and Officers.
Our  bylaws  and  declaration  of trust  authorize  our  company,  to the extent
permitted  under  Maryland  law, to indemnify its trustees and officers in their
capacity as such.  Section  8-301(15) of the Maryland  General  Corporation  Law
("MGCL")  permits a Maryland  REIT to indemnify or advance  expenses to trustees
and officers to the same extent as is permitted  for directors and officers of a
Maryland  corporation  under the MGCL The MGCL  requires a Maryland  corporation
(unless its charter provides otherwise, which our declaration of trust does not)
to  indemnify a director or officer  who has been  successful,  on the merits or
otherwise,  in the  defense  of any  proceeding  to  which he is made a party by
reason of his service in that capacity.  The MGCL permits a Maryland corporation
to  indemnify  its present and former  directors  and  officers,  among  others,
against  judgments,   penalties,  fines,  settlements  and  reasonable  expenses
actually incurred by them in connection with any proceeding to which they may be
made a party by reason of their service in those or other  capacities  unless it
is  established  that (a) the act or  omission  of the  director  or officer was
material to the matter  giving rise to the  proceeding  and (i) was committed in
bad faith or (ii) was the result of active and  deliberate  dishonesty,  (b) the
director or officer  actually  received an improper  personal  benefit in money,
property or services or (c) in the case of any criminal proceeding, the director
or  officer  had  reasonable  cause  to  believe  that the act or  omission  was
unlawful.  However,  a Maryland  corporation  may not  indemnify  for an adverse
judgment  in a suit by or in the right of the  corporation  or for a judgment of
liability on the basis that a personal benefit was improperly  received,  unless
in either case a court orders  indemnification  and then only for  expenses.  In
addition,  the MGCL permits a corporation  to advance  reasonable  expenses to a
director or officer upon the corporation's  receipt of a written  affirmation by
the  director or officer of his or her good faith  belief that he or she has met
the standard of conduct necessary for  indemnification  by the corporation and a
written  undertaking  by such  director or officer on his or her behalf to repay
the amount paid or  reimbursed  by the  corporation  if it shall  ultimately  be
determined that the standard of conduct was not met.

         Our bylaws also permit the  company,  subject the approval of our board
of  trustees,  to indemnify  and advance  expenses to any person who served as a
predecessor of the company in any of the capacities  described  above and to any
employee or agent of the company or a predecessor of the company.

         In addition  to the above,  our company  has  purchased  and  maintains
insurance  on behalf  of all of its  trustees  and  executive  officers  against
liability asserted against or incurred by them in their official capacities with
the  company,  whether  or not the  company  is  required  or has the  power  to
indemnify them against the same liability.

         Business Combinations. Section 8-301(14) of the MGCL permits a Maryland
REIT to enter to a  business  combination  (including  a merger,  consolidation,
share  exchange or, in certain  circumstances,  an asset transfer or issuance or
reclassification  of  equity  securities)  on  the  same  terms  as  a  Maryland
corporation  under the  MGCL.  Under the  MGCL,  certain  business  combinations
between a Maryland  corporation and any person who beneficially owns 10% or more
of the  voting  power of such  corporation's  shares,  or an  affiliate  of such
corporation  who, at any time within the  two-year  period  prior to the date in
question,  was the  beneficial  owner of 10% or more of the voting  power of the
then-outstanding voting shares of such corporation (an "Interested Stockholder")
or an affiliate  thereof,  are  prohibited  for five years after the most recent
date on which the  Interested  Stockholder  becomes an  Interested  Stockholder.
Thereafter,  any such business  combination  must be recommended by the board of
directors of such  corporation and approved by the affirmative  vote of at least
(a) 80% of the votes  entitled  to be cast by holders of  outstanding  shares of
voting stock of such  corporation and (b) two-thirds of the votes entitled to be
cast by holders  of shares of voting  stock of such  corporation  other than the
shares held by the Interested  Stockholder  with whom (or with whose  affiliate)
the business combination is to be affected,  unless, among other conditions, the
corporation's  common  shareholders  receive a minimum  price (as defined in the
MGCL) for their shares and the  consideration is received in cash or in the same
form as previously paid by the Interested Stockholder for its shares.

         Control Share Acquisitions.  The MGCL provides that "control shares" of
a Maryland  corporation acquired in a "control share acquisition" have no voting
rights  except  to the  extent  approved  by a vote of  two-thirds  of the votes
entitled to be cast on the matter,  excluding  shares owned by the acquirer,  by
officers or by directors who are employees of the corporation.  "Control Shares"
are voting shares of stock which,  if  aggregated  with all other such shares of
stock previously  acquired by the acquirer,  or in respect of which the acquirer
is able to exercise or direct the  exercise of voting  power  (except  solely by
virtue of a revocable proxy), would entitle the acquirer to exercise

909738.9
                                       15





voting power in electing  directors within one of the following ranges of voting
power: (i) one-fifth or more but less than one-third, (ii) one-third or more but
less than a majority,  or (iii) a majority or more of all voting power.  Control
Shares do not include shares which the acquiring person is then entitled to vote
as a result of having previously obtained stockholder approval. A "control share
acquisition"  means the  acquisition  of  control  shares,  subject  to  certain
exceptions.

         A person who has made or proposes to make a control share  acquisition,
upon  satisfaction  of  certain  conditions  (including  an  undertaking  to pay
expenses),  may  compel  the board of  directors  of the  corporation  to call a
special  meeting of stockholders to be held within 50 days of demand to consider
the  voting  rights of the  shares.  If no request  for a meeting  is made,  the
corporation may itself present the question at any stockholders meeting.

         If voting  rights are not  approved at the meeting or if the  acquiring
person  does not  deliver an  acquiring  person  statement  as  required  by the
statute,  then, subject to certain  conditions and limitations,  the corporation
may redeem  any or all of the  control  shares  (except  those for which  voting
rights have previously been approved) for fair value determined,  without regard
to the absence of voting  rights for the control  shares,  as of the date of the
last control share acquisition by the acquirer or of any meeting of stockholders
at which the voting rights of such shares are  considered  and not approved.  If
voting rights for control shares are approved at a stockholders  meeting and the
acquirer becomes entitled to vote a majority of the shares entitled to vote, all
other  stockholders may exercise  appraisal rights. The fair value of the shares
as  determined  for purposes of such  appraisal  rights may not be less than the
highest price per share paid by the acquirer in the control  share  acquisition,
and certain limitations and restrictions otherwise applicable to the exercise of
dissenters' rights do not apply in the context of a control share acquisition.

         The  foregoing  does  not  apply  to  shares   acquired  in  a  merger,
consolidation  or  share  exchange,  if  the  corporation  is  a  party  to  the
transaction, or to acquisitions approved or exempted by the charter or bylaws of
the  corporation.  Pursuant to the MGCL, the company has exempted  control share
acquisitions  involving  trustees  and  employees  of the company and any person
approved by the trustees of the company in their sole discretion.

         Amendments to Our Declaration of Trust. In general,  the declaration of
trust may be amended by the  affirmative  vote or written consent of the holders
of not less than a majority of the common shares then  outstanding  and entitled
to vote thereon. However, amendments with respect to certain provisions relating
to  the  ownership   requirements,   reorganizations   and  certain  mergers  or
consolidations or the sale of substantially  all of the company's assets,  which
amendments require the affirmative vote or written consent of the holders of not
less than two-thirds of the common shares then  outstanding and entitled to vote
thereon.  The  Trustees of our  company,  by a  two-thirds  vote,  may amend the
provisions  of the  declaration  of trust from time to time to effect any change
deemed  necessary  by the  Trustees to allow  Acadia to qualify and  continue to
qualify as a REIT

         Dissolution of Our Company or its REIT Status. The declaration of trust
permits  the  termination  and  the  discontinuation  of our  operations  by the
affirmative  vote of the holders of not less than a majority of the  outstanding
shares entitled to vote at a meeting of shareholders called for that purpose. In
addition,  the  declaration  of trust permits the Trustees to terminate our REIT
status at any time.

         Anti-Takeover  Effect of Certain  Provisions of Maryland Law and of the
Declaration of Trust.  The limitation on ownership of common shares set forth in
our  declaration  of trust,  as well as the  provisions of the MGCL dealing with
business  combinations and control share  acquisitions  could have the effect of
discouraging  offers to acquire  Acadia or of hampering  the  consummation  of a
contemplated acquisition.




909738.9
                                       16





                                 USE OF PROCEEDS

         We will not  receive  any  proceeds  from the sale of common  shares by
Selling Shareholders.


                     INTERESTS OF NAMED EXPERTS AND COUNSEL

         Martin L. Edelman, a trustee of the company, is counsel to the law firm
of Battle  Fowler LLP.  Battle  Fowler LLP is rendering an opinion as to certain
tax matters in the registration statement of which this prospectus is a part.


                        FEDERAL INCOME TAX CONSIDERATIONS

         The  following  is a summary of  material  federal  income tax  matters
relating to the  operations  of our company that may be relevant to  prospective
Acadia  shareholders.  It is based upon current law and is not tax advice.  This
discussion  does not address  all  aspects of  taxation  that may be relevant to
particular   shareholders   in  light  of  their  personal   investment  or  tax
circumstances,   or  to  certain  types  of  shareholders  (including,   without
limitation,    insurance   companies,   tax-exempt   organizations,    financial
institutions,  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,  nor does it give a detailed  discussion  of any
state, local or foreign tax  considerations.  In the opinion of our tax counsel,
the   following   discussion   accurately   reflects  the  federal   income  tax
considerations  relating to the  operations of the company that are likely to be
material to an Acadia shareholder.

         EACH  PROSPECTIVE  SHAREHOLDER  OF THE COMPANY IS ENCOURAGED TO CONSULT
ITS OWN  TAX  ADVISOR  REGARDING  THE  SPECIFIC  TAX  CONSEQUENCES  TO IT OF THE
PURCHASE, OWNERSHIP AND SALE OF THE COMPANY'S COMMON SHARES AND OF THE COMPANY'S
ELECTION TO BE TAXED AS A REIT, 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.

         General.  We made an election to be taxed as a REIT for federal  income
tax  purposes  commencing  with our taxable year ended  December  31,  1993.  We
believe the company is organized and operates in such a manner as to qualify for
taxation  as a REIT  under  the  Internal  Revenue  Code of 1986.  We  intend to
continue to operate in such a manner. However, no assurance can be given that we
will operate in a manner so as to qualify or remain qualified.

         The requirements  relating to the federal income tax treatment of REITs
and  their  shareholders  are  highly  technical  and  complex.   The  following
discussion  sets forth only the  material  aspects of those  requirements.  This
summary is qualified  in its  entirety by the  applicable  Code  provisions  and
Treasury  Regulations  promulgated  thereunder,  and administrative and judicial
interpretations thereof.

         Opinion  of Our  Tax  Counsel.  In the  opinion  of  our  tax  counsel,
commencing with the taxable year ended December 31, 1999, we have been organized
and have operated in conformity with the  requirements  for  qualification  as a
REIT within the meaning of the  Internal  Revenue  Code of 1986 and our proposed
method of operation  of the company  will enable  Acadia to continue to meet the
requirements for qualification and taxation as a REIT under the Internal Revenue
Code of 1986. It must be emphasized that the opinion of our tax counsel is based
on various assumptions and is conditioned upon certain  representations  made by
the company and others as to factual matters.  Moreover,  such qualification and
taxation as a REIT  depends  upon our  ability to meet,  through  actual  annual
operating results, the distribution levels, diversity of share ownership and the
various other  qualification  tests  imposed under the Internal  Revenue Code of
1986 that are discussed  below,  the results of which have not been and will not
be reviewed by our tax counsel.  Accordingly, no assurance can be given that the
actual results of the company's operations for any one taxable year will satisfy
such requirements.



909738.9
                                       17





         Taxation of Our  Company.  As long as we qualify to be taxed as a REIT,
we  generally  will not be  subject to federal  corporate  income  taxes on that
portion of its ordinary income or capital gain that is distributed  currently to
shareholders.  This is because the REIT provisions of the Internal  Revenue Code
of 1986 generally  allow a REIT to deduct  dividends  paid to its  shareholders.
This deduction for dividends paid to shareholders  substantially  eliminates the
federal  "double  taxation" on earnings  (once at the  corporate  level and once
again at the  shareholder  level) that  generally  results from  investment in a
corporation.

         Even if we qualify to be taxed as a REIT,  we may be subject to federal
income  tax in the  following  circumstances.  First,  a REIT  will be  taxed at
regular   corporate  rates  on  any   undistributed   REIT  taxable  income  and
undistributed net capital gains. Second, under certain circumstances, a REIT may
be subject to the "alternative  minimum tax" on its items of tax preference,  if
any. Third,  if a REIT has (i) net income from the sale or other  disposition of
"foreclosure property" (generally, property acquired by reason of a default on a
lease or an  indebtedness  held by a REIT)  that is held  primarily  for sale to
customers in the ordinary  course of business or (ii) other non-  qualifying net
income  from  foreclosure  property,  it will be subject  to tax at the  highest
corporate  rate  on  such  income.  Fourth,  if a REIT  has  net  income  from a
"prohibited  transaction"  (generally,  a sale or other  disposition of property
held primarily for sale to customers in the ordinary  course of business,  other
than foreclosure property), such income will be subject to a 100% tax. Fifth, if
a REIT should fail to satisfy the 75% gross  income test or the 95% gross income
test (as discussed below), and has nonetheless maintained its qualification as a
REIT because certain other  requirements  have been met, it will be subject to a
100% tax on the net income  attributable  to the  greater of the amount by which
the REIT fails the 75% or 95% test, multiplied by a fraction intended to reflect
the REIT's  profitability.  Sixth,  if a REIT  should  fail to  distribute  with
respect to 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 periods,  the REIT
will be subject to a 4% excise tax on the excess of such  required  distribution
over the amounts  actually  distributed.  Seventh,  if a REIT acquires any asset
from  a  C  corporation  (i.e.,  a  corporation  generally  subject  to  a  full
corporate-level  tax) in a  transaction  in which  the basis of the asset in the
REIT's hands is  determined by reference to the basis of the asset (or any other
property) in the hands of the C corporation  and the REIT recognizes gain on the
disposition  of such asset during the ten-year  period  beginning on the date on
which such asset was  acquired  by the REIT,  then the excess of the fair market
value of such property at the beginning of the applicable  ten-year  period over
the REIT's  adjusted  basis in such asset as of the  beginning of such  ten-year
period,  or built in gain,  will  generally  be subject to a tax at the  highest
regular corporate rate.

         Requirements for Qualification. To qualify as a REIT under the Internal
Revenue Code of 1986,  an  enterprise  must elect to be so treated and must meet
the  requirements,  discussed below,  relating to its  organization,  sources of
income, nature of assets, and distributions of income to shareholders.

         Organizational Requirements.  The Internal Revenue Code of 1986 defines
a REIT as a  corporation,  trust or  association:  (i) that is managed by one or
more trustees or directors;  (ii) the beneficial ownership of which is evidenced
by transferable shares or by transferable  certificates of beneficial  interest;
(iii)  that  would  be  taxable  as a  domestic  corporation  but for  the  REIT
provisions  of the  Internal  Revenue  Code of  1986;  (iv)  that is  neither  a
financial  institution nor an insurance company subject to certain provisions of
the Internal Revenue Code of 1986; (v) the beneficial ownership of which is held
by 100 or more  persons;  and (vi) during the last half of each taxable year not
more than 50% in value of the outstanding  shares owned,  directly or indirectly
through  the  application  of  certain  attribution  rules,  by  five  or  fewer
individuals (as defined in the Internal  Revenue Code of 1986 to include certain
entities).  In addition,  certain other tests,  described  below,  regarding the
nature of a REIT's income and assets, also must be satisfied.  The Code provides
that  conditions  (i)  through  (iv),  inclusive,  must be met during the entire
taxable  year and that  condition  (v) must be met during at least 335 days of a
taxable year of 12 months,  or during a proportionate  part of a taxable year of
less than 12  months.  Conditions  (v) and (vi) will not apply  until  after the
first taxable year for which an election is made to be taxed as a REIT.

         For  taxable  years  beginning  after  1997,  if a REIT  complies  with
Treasury  Regulations  that  provide  procedures  for  ascertaining  the  actual
ownership  of its  shares for such  taxable  year and the REIT did not know (and
with the exercise of reasonable  diligence  could not have known) that it failed
to meet the requirement of condition

909738.9
                                       18





(vi)  above for such  taxable  year,  the REIT will be treated as having met the
requirement of condition (vi) for such year.

         We have satisfied the  requirements set forth in (i) through (iv) above
and believe that we have sufficient  diversity of share ownership to allow it to
satisfy conditions (v) and (vi) above. Our declaration of trust includes certain
restrictions  regarding  transfers of common  shares that are intended to assist
the company in satisfying the share ownership  requirements described in (v) and
(vi) above.  See  "Description of our Common  Shares--Restrictions  on Transfer"
(p.13).

         In addition,  an  enterprise  may not elect to become a REIT unless its
taxable year is the calendar year. Acadia's taxable year is the calendar year.

         In the case of a REIT that is a  partner  in a  partnership,  such REIT
will be deemed to own its  proportionate  share of the assets of the partnership
and will be deemed to be entitled to the income of the partnership  attributable
to such share. In addition,  the character of the assets and gross income of the
partnership will retain the same character in the hands of the REIT for purposes
of the REIT  requirements,  including  satisfying  the  income  and asset  tests
described herein. Thus, Acadia's proportionate share of the assets,  liabilities
and  items  of  income  of the  operating  partnership,  and  of our  subsidiary
partnerships, limited liability companies, joint ventures and business trusts in
which the company or the  operating  partnership  have and will have an interest
are and will be treated as assets, liabilities and items of income of Acadia for
purposes  of applying  the  requirements  described  herein,  provided  that the
operating   partnership   and  our  subsidiary   partnerships   are  treated  as
partnerships  for federal  income tax purposes.  See  "--Income  Taxation of the
operating partnership, the Subsidiary Partnerships and Their Partners" (p.24).

         Income Tests. In order for us to maintain  qualification  as a REIT, we
must satisfy two gross income tests  annually.  First, at least 75% of our gross
income  (excluding gross income from prohibited  transactions)  for each taxable
year must be derived  directly or indirectly from  investments  relating to real
property or mortgages on real property  (including  "rents from real  property,"
dividends from qualified REITs and, in certain circumstances,  interest) or from
"qualified temporary  investment income" (generally,  income attributable to the
temporary  investment of new capital received by the REIT). Second, at least 95%
of our gross income  (excluding gross income from prohibited  transactions)  for
each taxable year must be derived from such real property  investments  and from
dividends,  interest,  and  gain  from  the  sale or  disposition  of  stock  or
securities or from any  combination of the foregoing.  In addition,  for taxable
years prior to 1998, short-term gain from the sale or other disposition of stock
or securities,  gain from prohibited  transactions and gain on the sale or other
disposition  of real  property  held  for  less  than  four  years  (apart  from
involuntary conversions and sales of foreclosure property) must have represented
less than 30% of the gross  income of our  predecessor  (including  gross income
from prohibited transactions) for each taxable year.

         Substantially  all of our income is expected  to be rental  income from
rents.  In order for such  income to qualify as "rents from real  property"  for
purposes of  satisfying  the 75% and 95% gross  income  tests,  we must  satisfy
several  conditions.  First, the amount of rent must not be based in whole or in
part on the income or profits  of any  person,  although  rents  generally  will
qualify as rents from real  property if they are based on a fixed  percentage of
receipts  or sales.  Second,  rents  received  from a tenant will not qualify as
"rents from real  property"  if the  company,  or an owner of 10% or more of the
company, directly or constructively, owns 10% or more of such tenant (a "Related
Party  Tenant").  Third,  if rent  attributable  to personal  property leased in
connection  with a lease of real  property is greater than 15% of the total rent
received  under the lease,  the portion of rent  attributable  to such  personal
property  will not qualify as "rents from real  property."  Finally we generally
must not  operate or manage the  property  or furnish or render  services to the
tenants of such property,  other than through an "independent  contractor"  from
whom we derive no income. However, the "independent contractor" requirement does
not apply to the extent the services rendered by us are customarily furnished or
rendered in connection  with the rental of the real  property in the  geographic
area in which the property is located.  Based on our  experience we believe that
all  services  provided  to  tenants  by  us  will  be  considered  "usually  or
customarily  rendered" in connection with the rental of retail and multi- family
space,  although  there  can be no  assurance  that  the IRS  will  not  contend
otherwise.



909738.9
                                       19





         We believe that our real estate investments, which include an allocable
share of income  from the  operating  partnership,  will  give  rise to  income,
substantially  all of which  will  qualify  as "rents  from real  property"  for
purposes of the 75% and 95% gross income tests.  We will not (i) charge rent for
any  property  that is based in whole or in part on the income or profits of any
person  (other than being  based on a  percentage  of  receipts of sales);  (ii)
receive rents in excess of a de minimis amount from Related Party Tenants; (iii)
derive more than a de minimus amount of rents  attributable to personal property
which  constitute  greater than 15% of the total rents received under the lease;
or (iv) perform non-customary services considered to be rendered to the occupant
of property, other than through an independent contractor from whom we derive no
income.

         We may  receive  fees  in  exchange  for  the  performance  of  certain
management  activities  for third parties with respect to properties in which we
do not own an interest.  Such fees will result in nonqualifying income under the
95% and 75% gross income tests. If the sum of the income realized by us (whether
directly or through our interest in the operating  partnership or our subsidiary
partnerships)  which does not satisfy the  requirements  of the 95% gross income
test (collectively,  "Non-Qualifying Income") exceeds 5% of our gross income for
any taxable year, our status as a REIT would be jeopardized. We have represented
that the amount of  Non-Qualifying  Income in any taxable year,  including  such
fees, will not exceed 5% of our annual gross income for any taxable year.

         If we fail to satisfy one or both of the 75% or 95% gross  income tests
for any taxable year, we may nevertheless  qualify as a REIT for such year if we
are entitled to relief under certain  provisions of the Internal Revenue Code of
1986. These relief provisions  generally will be available if (i) the failure to
meet such tests was due to reasonable cause and not due to willful neglect, (ii)
a schedule of the sources of qualifying income is attached to the federal income
tax  return of the  company  for such  taxable  year,  and  (iii) any  incorrect
information on the schedule was not due to fraud with intent to evade tax. It is
not  possible,  however,  to  state  whether  in all  circumstances  we would be
entitled  to the  benefit of these  relief  provisions.  As  discussed  above in
"--Taxation of our company," even if these relief  provisions apply, a tax would
be imposed with respect to the excess net income.  No similar  relief  provision
would apply if the 30% income  test had been failed for a taxable  year prior to
1998 and, in such case,  Acadia would cease to qualify as a REIT.  See"--Failure
to Qualify" (p.21).

         Asset Tests. In order for us to qualify as a REIT, at the close of each
quarter of its taxable  year we must also  satisfy  three tests  relating to the
nature of the our assets.  First,  at least 75% of the value of its total assets
must be  represented  by real estate assets (which for this purpose  include (i)
our  allocable  share of real estate  assets held by  partnerships  in which the
company or a "qualified REIT  subsidiary"  owns an interest,  (ii) stock or debt
instruments  purchased  with the proceeds of a share offering or a long-term (at
least five  years)  debt  offering  and held for not more than one year from the
date the company receives such proceeds, and (iii) shares in qualified REITs and
cash,  cash items and government  securities.  Second,  not more than 25% of our
total assets may be represented by securities  other than those in the 75% asset
class.  Third, of the investments  included in the 25% asset class, the value of
any one issuer's  securities may not exceed 5% of the value of our total assets,
and the company may not own more than 10% of any one issuer's outstanding voting
securities  (excluding  securities  of a qualified  REIT  subsidiary  or another
REIT).

         We  anticipate  that we will be able to comply with these asset  tests.
Acadia is currently  deemed to, and will continue to be deemed to, hold directly
its  proportionate  share of all real estate and other  assets of the  operating
partnership and our subsidiary partnerships, and it should be considered to hold
its proportionate share of all assets deemed owned by those partnerships through
the partnerships' ownership of partnership interests in other partnerships. As a
result,  the company  intends to hold more than 75% of its assets as real estate
assets.  In addition,  we do not plan to hold any securities  representing  more
than 10% of any one issuer's  voting  securities,  other than any qualified REIT
subsidiary,  nor  securities of any one issuer  exceeding 5% of the value of our
gross assets.

         After initially meeting the asset tests at the close of any quarter, we
will not lose our REIT  status for failing to satisfy the asset tests at the end
of a later quarter  solely by reason of changes in asset values.  If the failure
to satisfy the asset tests  results from an  acquisition  of securities or other
property during a quarter, the failure can be cured by disposition of sufficient
nonqualifying  assets within 30 days after the close of that quarter.  We intend
to  maintain  adequate  records of the value of our assets to ensure  compliance
with the asset tests and will take such other

909738.9
                                       20





action  within 30 days after the close of any quarter as may be required to cure
any  noncompliance.  However,  there can be no assurance  that such other action
always will be successful.

         Annual  Distribution  Requirements.  In order to be taxed as a REIT, we
will be required to meet certain annual distribution requirements.  We will have
to distribute  dividends (other than capital gain dividends) to our shareholders
in an  amount  at  least  equal to (1) the sum of (a) 95% of our  "REIT  taxable
income"  (computed  without  regard  to the  dividends  paid  deduction  and the
company's  net  capital  gain)  and  (b)  95% of the net  income,  if any,  from
foreclosure  property in excess of the  special  tax on income from  foreclosure
property,   minus  (2)  the  sum  of  certain  items  of  noncash  income.  Such
distributions  must be paid in the taxable year to which they relate,  or in the
following  taxable  year if  declared  before the company  timely  files its tax
return for such year and if paid on or before the first regular dividend payment
after such declaration.

         To the extent that we do not  distribute all of our net capital gain or
distribute  at least 95% (but less than  100%) of our REIT  taxable  income,  as
adjusted,  we will be subject to tax on the  undistributed  portion,  at regular
ordinary  and capital  gains  corporate  tax rates.  Furthermore,  if we fail to
distribute  for  each  calendar  year at  least  the sum of (a) 85% of our  REIT
ordinary  income for such year,  (b) 95% of our REIT capital gain net income for
such year, and (c) any undistributed ordinary income and capital gain net income
from prior periods,  we will be subject to a 4% excise tax on the excess of such
required distribution over the amounts actually  distributed.  We intend to make
timely distributions sufficient to satisfy this annual distribution requirement.

         We expect that our taxable income  typically will be less than our cash
flow,  due to the  allowance  of  depreciation  and  other  noncash  charges  in
computing our taxable income.  Accordingly, we anticipate that we generally will
have  sufficient  cash  or  liquid  assets  to  enable  it to  satisfy  the  95%
distribution requirement.

         It is possible that from time to time we 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
deductible  expenses  and the  inclusion  of such income and  deduction  of such
expenses  in  arriving  at our  taxable  income if the  amount of  nondeductible
expenses  such as principal  amortization  or capital  expenditures  exceeds the
amount of noncash deductions.  In the event that such situation occurs, in order
to meet the 95%  distribution  requirement,  we may find it necessary to arrange
for  short-term,  or possibly  long-term,  borrowings or to pay dividends in the
form of consent  dividends.  If the  amount of  nondeductible  expenses  exceeds
noncash  deductions,  we may  refinance  our  indebtedness  to reduce  principal
payments and borrow funds for capital expenditures.

         Under certain circumstances in which an adjustment is made that affects
the amount that should have been distributed for a prior taxable year, we may be
able to rectify  the  failure to meet such  distribution  requirement  by paying
"deficiency  dividends" to shareholders in the later year, which may be included
in our deduction for dividends  paid for the earlier year.  Thus, we may be able
to avoid being taxed on amounts distributed as deficiency dividends; however, we
will be required to pay interest  based upon the amount of any  deduction  taken
for deficiency dividends.

         Failure to Qualify.  If Acadia  fails to qualify for taxation as a REIT
in any taxable year, and the relief provisions do not apply, we would be subject
to tax (including any applicable  alternative minimum tax) on our taxable income
at regular  corporate rates.  Distributions to shareholders in any year in which
we fail to qualify will not be  deductible by us nor will they be required to be
made.  In such  event,  to the  extent of current or  accumulated  earnings  and
profits,  all  distributions to shareholders will be taxable as ordinary income,
and  subject  to  certain  limitations  of the  Internal  Revenue  Code of 1986,
corporate  distributees  may be eligible for the  dividends-received  deduction.
Unless entitled to relief under specific statutory  provisions,  we also will be
disqualified  from taxation as a REIT for the four taxable  years  following the
year during which qualification was lost. It is not possible to state whether in
all circumstances we would be entitled to such statutory relief.



909738.9
                                       21





         Taxation  of  U.S.  Shareholders  of  the  Company.  As  used  in  this
prospectus, the term "U.S. Shareholder" means a holder of our common shares that
(for United States  federal income tax purposes) (i) is a citizen or resident of
the United States, (ii) is a corporation,  partnership,  or other entity created
or  organized  in or under the laws of the  United  States  or of any  political
subdivision thereof, (iii) is an estate the income of which is subject to United
States federal income taxation  regardless of its source or (iv) is a trust if a
United  States  court  is  able  to  exercise   primary   supervision  over  the
administration  of the  trust and one or more  United  States  persons  have the
authority to control all  substantial  decisions  of the trust.  For any taxable
year for which Acadia qualifies for taxation as a REIT,  amounts  distributed to
taxable U.S. Shareholders will be taxed as follows:

         Distributions Generally. Distributions to U.S. Shareholders, other than
capital gain dividends  discussed  below,  will be taxable as ordinary income to
such holders up to the amount of the company's  current or accumulated  earnings
and profits.  Such  distributions  are not  eligible for the  dividends-received
deduction for corporations. To the extent that the Acadia makes distributions in
excess of its current or accumulated  earnings and profits,  such  distributions
will first be treated as a tax-free return of capital, reducing the tax basis in
the  U.S.  Shareholders'  shares,  and  distributions  in  excess  of  the  U.S.
Shareholders'  tax basis in their respective shares will be taxable as an amount
realized  from the sale of such  shares.  Dividends  declared  by the company in
October, November, or December of any year payable to a shareholder of record on
a  specified  date in any such month will be treated as both paid by the company
and received by the  shareholder on December 31 of such year,  provided that the
dividend  is  actually  paid by the  company  during  January  of the  following
calendar year.  Shareholders may not include on their own income tax returns any
tax losses of the company.

         We will be treated as having  sufficient  earnings and profits to treat
as a dividend any  distribution  by the company up to the greater of our current
or accumulated  earnings and profits. As a result,  shareholders may be required
to treat certain  distributions that would otherwise result in a tax-free return
of capital as taxable  dividends.  Moreover,  any "deficiency  dividend" will be
treated as a "dividend" (an ordinary dividend or a capital gain dividend, as the
case may be), regardless of the company's earnings and profits.

         Capital  Gain  Dividends.  Dividends  to  U.S.  Shareholders  that  are
properly designated by us as capital gain dividends will be treated as long-term
capital gain (to the extent they do not exceed the company's  actual net capital
gain)  for  the  taxable  year  without  regard  to the  period  for  which  the
shareholder has held his shares. Shareholders, however, may be required to treat
up to 20% of certain  capital gain  dividends as ordinary  income.  Capital gain
dividends   are  not  eligible   for  the   dividends-received   deduction   for
corporations.

         Individual U.S. Shareholders and U.S. Shareholders that are estates and
trusts  currently  are  subject to federal  income tax on net  capital  gains at
different tax rates depending upon the nature of the gain and the holding period
of the asset  disposed  of.  Although a REIT is taxed on its  undistributed  net
capital  gains,  for taxable  years  beginning  after 1997,  a REIT may elect to
include all or a portion of such  undistributed  net capital gains in the income
of its  shareholders.  In such event,  the shareholder  will receive a credit or
refund for the amount of tax paid by the REIT on such  undistributed net capital
gains.

         Passive   Activity   and   Loss;   Investment   Interest   Limitations.
Distributions  by us and gain from the  disposition of common shares  ordinarily
will not be treated as passive activity income, and therefore, U.S. Shareholders
generally  will not be able to apply any "passive  losses"  against such income.
Dividends  from the company (to the extent  they do not  constitute  a return of
capital)  generally  will be treated as  investment  income for  purposes of the
investment interest limitation.  Net capital gain from the disposition of common
shares and capital gain  dividends  generally  will be excluded from  investment
income unless the taxpayer elects to have the gain taxed at ordinary rates.

         Dispositions of Common Shares.  A U.S.  Shareholder will recognize gain
or loss on the sale or exchange of common shares to the extent of the difference
between the amount  realized on such sale or exchange and the holder's tax basis
in such shares.  Such gain or loss generally will constitute  long-term  capital
gain or loss if the holder has held such  shares for more than one year and,  in
the case of an individual, will be taxed at a lower rate. Losses incurred on the
sale or  exchange of common  shares held for six months or less (after  applying
certain holding period

909738.9
                                       22





rules),  however,  generally will be deemed long-term capital loss to the extent
of any long-term  capital gain dividends  received by the U.S.  Shareholder with
respect to such shares.

         Treatment of Tax-Exempt U.S. Shareholders. The Internal Revenue Service
has ruled that amounts  distributed by a REIT out of its earnings and profits to
a tax-exempt pension trust did not constitute unrelated business taxable income.
Although  rulings  are merely  interpretations  of law by the  Internal  Revenue
Service and may be revoked or  modified,  based on this  analysis,  indebtedness
incurred by us in connection  with the  acquisition of an investment  should not
cause any income derived from the investment to be treated as unrelated business
taxable income upon the distribution of such income as dividends to a tax-exempt
entity. A tax-exempt entity that incurs  indebtedness to finance its purchase of
shares,  however, will be subject to unrelated business taxable income by virtue
of the debt-financed income rules.

         In addition,  tax-exempt  pension and certain other  tax-exempt  trusts
that hold more than 10% (by value) of the interests in a REIT may be required to
treat a percentage of REIT dividends as unrelated  business taxable income.  The
requirement  applies only if (i) the  qualification of the REIT depends upon the
application  of  a   "look-through"   exception  to  the   restriction  on  REIT
shareholdings by five or fewer  individuals,  including such trusts and (ii) the
REIT is "predominantly  held" by such trusts; i.e., either (A) at least one such
trust holds more than 25% (by value) of the  interests in the REIT or (B) one or
more such trusts  (each of whom own more than 10% by value of the  interests  in
the REIT) hold in the aggregate more than 50% (by value) of the interests in the
REIT.  It is not  anticipated  that  our REIT  qualification  will  depend  upon
application of the  "look-through"  exception or that we will be  "predominantly
held" by such trusts.

         Special  Tax  Considerations  for  Foreign   Shareholders.   The  rules
governing   United  States  federal  income  taxation  of   non-resident   alien
individuals, foreign corporations,  foreign partnerships, and foreign trusts and
estates (collectively,  "Non-U.S.  Shareholders") are complex, and the following
discussion  is intended  only as a summary of such rules.  Prospective  Non-U.S.
Shareholders  should consult with their own tax advisors to determine the impact
of federal,  state,  and local income tax laws on an  investment in the company,
including  any reporting  requirements,  as well as the tax treatment of such an
investment under their home country laws.

         In  general,  Non-U.S.  Shareholders  will be subject to United  States
federal  income tax with  respect  to their  investment  in the  company if such
investment is "effectively connected" with the Non-U.S. Shareholder's conduct of
a trade or business in the United States. A corporate  Non-U.S.  Shareholder who
receives income that is (or is treated as)  effectively  connected with a United
States  trade or  business  also may be subject to the branch  profits tax under
section 884 of the Internal Revenue Code of 1986 which is payable in addition to
United States corporate income tax. The following discussion applies to Non-U.S.
Shareholders whose investment in the company is not so effectively connected. We
expect to withhold  United States income tax, as described  below,  on the gross
amount of any distributions  paid to a Non-U.S.  Shareholder  unless (i) a lower
treaty rate  applies  and the  required  form  evidencing  eligibility  for that
reduced rate is filed with the company,  or (ii) the Non-U.S.  Shareholder files
an Internal  Revenue  Service Form 4224 or  applicable  successor  form with the
company, claiming that the distribution is "effectively connected" income.

         A distribution by us that is not  attributable to gain from the sale or
exchange  by us of a  United  States  real  property  interest  and  that is not
designated  by us as a capital  gain  dividend  will be treated  as an  ordinary
income  dividend to the extent made out of current or  accumulated  earnings and
profits.  Generally,  an ordinary  income  dividend  will be subject to a United
States  withholding  tax  equal to 30% of the gross  amount of the  distribution
unless  such tax is  reduced  or  eliminated  by an  applicable  tax  treaty.  A
distribution of cash in excess of our earnings and profits will be treated first
as a return of capital  that will reduce a Non-U.S.  Shareholder's  basis in its
holding  of our  common  shares  (but not below  zero) and then as gain from the
disposition  of such shares,  the tax treatment of which is described  under the
rules discussed below with respect to dispositions of shares.

         Distributions  by us that  are  attributable  to gain  from the sale or
exchange of a United States real  property  interest will be taxed to a Non-U.S.
Shareholder under the Foreign Investment in Real Property Tax Act of 1980. Under
the Foreign Investment in Real Property Tax Act, such distributions are taxed to
a Non-U.S. Shareholder as

909738.9
                                       23





if such distributions  were gains  "effectively  connected" with a United States
trade or business.  Accordingly,  a Non- U.S.  Shareholder  will be taxed at the
normal  capital  gain rates  applicable  to a U.S.  Shareholder  (subject to any
applicable  alternative minimum tax and a special alternative minimum tax in the
case of non-resident alien  individuals).  Distributions  subject to the Foreign
Investment in Real Property Tax Act also may be subject to a 30% branch  profits
tax in the hands of a foreign  corporate  shareholder  that is not  entitled  to
treaty exemption.

         We  are   required  to   withhold   from   distributions   to  Non-U.S.
Shareholders,  and remit to the Internal Revenue Service,  (i) 35% of designated
capital gain dividends (or, if greater,  35% of the amount of any  distributions
that could be  designated  as capital gain  dividends)  and (ii) 30% of ordinary
dividends paid out of earnings and profits.  In addition,  if we designate prior
distributions  as capital gain dividends,  subsequent  distributions,  up to the
amount of such prior  distributions  not  withheld  against,  will be treated as
capital gain dividends for purposes of withholding.  A distribution in excess of
the company's earnings and profits may be subject to 30% dividend withholding if
at the time of the distribution it cannot be determined whether the distribution
will be in an amount  in  excess of our  current  or  accumulated  earnings  and
profits.  Tax treaties  may reduce our  withholding  obligations.  If the amount
withheld by us with respect to a distribution to a Non-U.S.  Shareholder exceeds
the shareholder's  United States tax liability with respect to such distribution
(as determined under the rules described in the two preceding  paragraphs),  the
Non- U.S.  Shareholder  may file for a refund of such excess  from the  Internal
Revenue Service. It should be noted that the 35% withholding tax rate on capital
gain dividends  currently  corresponds to the maximum income tax rate applicable
to  corporations,  but is higher than the 20% maximum  rate on capital  gains of
individuals.

         Unless our common  shares  constitute  a "United  States real  property
interest" within the meaning of the Foreign  Investment in Real Property Tax Act
or are  effectively  connected  with a U.S.  trade or  business,  a sale of such
shares by a Non-U.S.  Shareholder generally will not be subject to United States
taxation.  Our common  shares will not  constitute a United States real property
interest   if   the   company   is   a    "domestically-controlled    REIT."   A
domestically-controlled  REIT is a REIT in which at all times during a specified
testing  period  less  than 50% in  value  of its  shares  is held  directly  or
indirectly  by Non-U.S.  Shareholders.  It is currently  believed  that we are a
domestically-controlled  REIT,  and  therefore  that the sale of  shares  in our
company  will not be subject to taxation  under the Foreign  Investment  in Real
Property Tax Act.  However,  because the common shares are publicly  traded,  no
assurance   can  be   given   that   the   company   will   continue   to  be  a
domestically-controlled  REIT.  Notwithstanding the foregoing,  capital gain not
subject to the Foreign  Investment in Real Property Tax Act will be taxable to a
Non-U.S.  Shareholder  if  the  Non-U.S.  Shareholder  is  a  nonresident  alien
individual  who is present in the United  States for 183 days or more during the
taxable year and certain other  conditions  apply, in which case the nonresident
alien  individual  will be  subject  to a 30% tax on such  individual's  capital
gains.  If our company  did not  constitute  a  domestically-  controlled  REIT,
whether a Non-U.S. Shareholder's,  sale of common shares would be subject to tax
under the  Foreign  Investment  in Real  Property  Tax Act as a sale of a United
States real property interest would depend on whether the shares were "regularly
traded"  (as  defined by  applicable  Treasury  Regulations)  on an  established
securities market (e.g., the NYSE) and on the size of the Selling  Shareholder's
interest in the company.  If the gain on the sale of the  company's  shares were
subject to taxation  under the Foreign  Investment in Real Property Tax Act, the
Non-U.S.  Shareholder  would  be  subject  to  the  same  treatment  as  a  U.S.
Shareholder with respect to such gain (subject to applicable alternative minimum
tax and a  special  alternative  minimum  tax in the case of  nonresident  alien
individuals).  In any  event,  a  purchaser  of common  shares  from a  Non-U.S.
Shareholder  will not be required under the Foreign  Investment in Real Property
Tax Act to withhold on the purchase  price if the  purchased  common  shares are
"regularly  traded" on an established  securities  market or if our company is a
domestically-controlled  REIT.  Otherwise,  under the Foreign Investment in Real
Property Tax Act the  purchaser of our common shares may be required to withhold
10% of the purchase price and remit such amount to the Internal Revenue Service.

         Income   Taxation  of  the  Operating   Partnership,   our   Subsidiary
Partnerships and Their Partners.  The following  discussion  summarizes  certain
federal income tax considerations  applicable to our investment in the operating
partnership  and  the  indirect  interest  of  our  company  in  our  subsidiary
partnerships.

         Classification   of  the  Operating   Partnership  and  Our  Subsidiary
Partnerships.  We will be  entitled  to include  in our income our  distributive
share of the income and to deduct  our  distributive  share of the losses of the
operating partnership (including the operating partnership's share of the income
or losses of our subsidiary partnerships) only

909738.9
                                       24





if the operating partnership (or our subsidiary  partnerships) is classified for
federal  income tax purposes as  partnerships  or, in the case of certain of our
subsidiary partnerships that are single-member limited liability companies,  are
disregarded as an entity separate from such member,  rather than as associations
taxable as corporations.  With certain  exceptions,  an unincorporated  domestic
organization  formed on or after  January  1, 1997 that has two or more  members
will be treated as a  partnership  for  federal  income tax  purposes  absent an
election  by such  organization  to be  treated as an  association  taxable as a
corporation. Such an organization formed prior to January 1, 1997 was treated as
a partnership  for federal income tax purposes  rather than as a corporation for
periods  prior to  January  1,  1997 only if it had no more than two of the four
corporate  characteristics  that the  Treasury  Regulations  applicable  to such
organizations  used to  distinguish  a partnership  from a  corporation  for tax
purposes. These four characteristics were continuity of life,  centralization of
management,  limited liability,  and free  transferability of interests.  Unless
such  organization   elects  otherwise,   the  classification   claimed  by  the
organization  prior to January  1, 1997 will  continue  for  periods on or after
January 1, 1997, and such classification will be respected for all prior periods
if  the  organization  had a  reasonable  basis  for  such  classification,  the
organization  and all  members of the  organization  recognized  the federal tax
consequences of any change in the  organization's  classification  within the 60
months prior to January 1, 1997, and neither the organization nor any member was
notified  in  writing on or before  May 8, 1996 that the  classification  of the
organization was under examination.

         We expect  that the  operating  partnership  and all of our  subsidiary
partnerships  formed on and after  January 1, 1997  either will have two or more
members at all times or, in the case of certain of our subsidiary  partnerships,
will have a single member, and that none of those organizations will elect to be
treated as an  association  for federal  income tax purposes.  In addition,  our
subsidiary  partnerships  in  existence  prior to  January  1,  1997 and  owned,
directly  or  indirectly,  by the  company  and its  predecessor  claimed  to be
partnerships  for all periods  prior to January 1, 1997 and were not notified in
writing on or before May 8, 1996 that such classification was under examination.
In the  opinion  of our tax  counsel,  which is based on the  provisions  of the
partnership  agreement  of the  operating  partnership  and on  certain  factual
assumptions and  representations,  the operating  partnership and our subsidiary
partnerships have been,  continue to be and will be, treated as partnerships for
federal  income tax  purposes or, in the case of those  subsidiary  partnerships
that are single-member  limited liability  companies,  will be disregarded as an
entity separate from such member. However, neither the operating partnership nor
any of our  subsidiary  partnerships  have  requested,  nor do  they  intend  to
request, a ruling from the Internal Revenue Service that they will be treated as
partnerships or disregarded, as applicable, for federal income tax purposes. Our
tax  counsel's  opinion is not binding on the  Internal  Revenue  Service or the
courts.

         A  publicly-traded  partnership  is a partnership  whose  interests are
traded  on an  established  securities  market  or are  readily  tradeable  on a
secondary  market (or the  substantial  equivalent  thereof).  A publicly traded
partnership  will be treated as a  corporation  for federal  income tax purposes
unless at least 90% of such  partnership's  gross  income for each  taxable year
consists of  "qualifying  income," which  generally  includes any income that is
qualifying income for purposes of the 95% gross income test applicable to REITs.
It is unclear whether the right of unit holders in the operating  partnership to
exchange  their  units  for  shares  of the  company  would  be  treated  as the
"substantial equivalent" of the units being readily tradeable.  However, because
it is anticipated that the operating partnership will meet the Qualifying Income
Exception,  it should not be treated as a corporation under the  publicly-traded
partnership  rules.  In  addition,  Treasury  Regulations  provide  certain safe
harbors that, if applicable,  will cause partnership  interests to be treated as
interests  that  are  not  readily  tradeable  on  a  secondary  market  or  the
substantial  equivalent thereof. If for any reason the operating  partnership or
one of our  subsidiary  partnerships  were taxable as a corporation  for federal
income tax purposes,  our company would not be able to satisfy the  requirements
for REIT status.

         Partners,  Not  Partnerships,  Subject to Tax. A  partnership  is not a
taxable entity for federal income tax purposes. Rather, a partner is required to
take into account its allocable share of a partnership's  income, gains, losses,
deductions, and credits for any taxable year of the partnership ending within or
with the taxable year of the partner,  without regard to whether the partner has
received or will receive any distributions from the partnership.


909738.9
                                       25





         Partnership   Allocations.   Although  a  partnership   agreement  will
generally  determine the  allocation of income and losses among  partners,  such
allocations  will be  disregarded  for tax purposes  under section 704(b) of the
Internal  Revenue  Code of 1986 if they do not  comply  with the  provisions  of
section 704(b) of the Internal Revenue Code of 1986 and the Treasury Regulations
promulgated thereunder as to substantial economic effect.

         If an allocation is not recognized for federal income tax purposes, the
item  subject to the  allocation  will be  reallocated  in  accordance  with the
partners' interests in the partnership,  which will be determined by taking into
account all of the facts and circumstances  relating to the economic arrangement
of the partners with respect to such item. The allocations of taxable income and
loss of the operating  partnership and our subsidiary  partnerships are intended
to comply with the  requirements of section 704(b) of the Internal  Revenue Code
of 1986 and the Treasury Regulations promulgated thereunder.

         Sale  of  Partnership  Property.  Generally,  any  gain  realized  by a
partnership  on the sale of property held by the  partnership  for more than one
year and allocated to a partner will be long-term  capital gain,  except for any
portion of such gain that is treated as depreciation or cost recovery recapture.
However,  under the REIT  requirements  imposed by the Internal  Revenue Code of
1986, our share, as a partner, of any gain realized by the operating partnership
or our subsidiary  partnerships on the sale of any property held as inventory or
other property held primarily for sale to customers in the ordinary  course of a
trade or business will be treated as income from a prohibited  transaction  that
is subject to a 100% penalty tax. See "--Taxation of Our Company" (p.18).

         Information Reporting  Requirements and Backup Withholding Tax. We will
report to our U.S.  Shareholders  and the Internal Revenue Service the amount of
distributions paid during each calendar year and the amount of tax withheld,  if
any. Under certain  circumstances,  U.S.  Shareholders  may be subject to backup
withholding  at a  rate  of 31%  with  respect  to  distributions  paid.  Backup
withholding will apply only if the shareholder (i) fails to furnish its taxpayer
identification  number  (which,  for an individual,  would be such  individual's
Social Security  number),  (ii) furnishes an incorrect  taxpayer  identification
number,  (iii) is notified by the  Internal  Revenue  Service that it has failed
properly to report  payments of interest and  dividends,  or (iv) under  certain
circumstances, fails to certify, under penalty of perjury, that it has furnished
a  correct  taxpayer  identification  number  and has not been  notified  by the
Internal Revenue Service that it is subject to backup withholding for failure to
report interest and dividend  payments.  Backup  withholding will not apply with
respect to payments made to certain exempt recipients,  such as corporations and
tax-exempt  organizations.  U.S.  Shareholders  should  consult  their  own  tax
advisors regarding their qualification for exemption from backup withholding and
the procedure for obtaining  such an  exemption.  Backup  withholding  is not an
additional tax. Rather,  the amount of any backup  withholding with respect to a
payment to a U.S.  Shareholder  will be allowed  as a credit  against  such U.S.
Shareholder's  United States  federal  income tax liability and may entitle such
U.S.  Shareholder  to a  refund,  provided  that  the  required  information  is
furnished to the Internal Revenue Service.

         Additional  issues may arise  pertaining to  information  reporting and
backup withholding with respect to Non- U.S. Shareholders. Non-U.S. Shareholders
should consult their tax advisors with respect to any such information reporting
and backup withholding requirements.

         State and Local Tax  Considerations.  We are, and our  shareholders may
be, subject to state or local taxation in various state or local  jurisdictions,
including  those  in  which  the  company,   its  shareholders,   the  operating
partnership  or our subsidiary  partnerships  transact  business or reside.  The
state and local tax  treatment of the company,  the operating  partnership,  our
subsidiary  partnerships  and our  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 their investment in the company.

         Possible  Federal Tax  Developments.  The rules  dealing  with  federal
income taxation are constantly under review by the Internal Revenue Service, the
Treasury  Department,  Congress and the courts.  New federal tax  legislation or
other  provisions  may be enacted  into law or new  interpretations,  rulings or
Treasury  Regulations could be adopted or judicial  decisions  rendered,  all of
which  could  affect  the  taxation  of the  company  and its  shareholders.  No
prediction  can  be  made  as to the  likelihood  of  passage  of  any  new  tax
legislation or other provisions either directly

909738.9
                                       26





or indirectly affecting the company and its stockholders.  Consequently, the tax
treatment  described  herein may be modified  prospectively  or retroactively by
such legislative, judicial or administrative action.


                              SELLING SHAREHOLDERS

         As described elsewhere in this prospectus, the Selling Shareholders are
persons who either have  received our  restricted  common  shares or may receive
common shares in exchange for their OP Units. The following table sets forth, as
of March 2,  2000 the name of each  Selling  Shareholder,  the  number of common
shares  beneficially  owned by each  Selling  Shareholder,  and the  number  and
percentage  of our  common  shares  to be  beneficially  owned  by each  Selling
Shareholder  following  the  offering to which this  prospectus  relates.  Since
Selling  Shareholders  may sell all, some or none of their shares that are to be
offered by this  prospectus,  no estimate can be made of the aggregate number of
common shares  offered by this  prospectus,  or the  aggregate  number of common
shares that will be owned by each Selling  Shareholder  upon  completion  of the
offering to which this prospectus relates. Except as otherwise noted below, none
of the Selling  Shareholders has, within the past three years, had any position,
office or other material relationship with Acadia.

         The common shares  offered by this  prospectus may be offered from time
to time directly by the Selling Shareholders named below or by pledgees, donees,
transferees or other successors in interest thereto:



                                                                                            Number of       Percentage to
                                                                         Maximum          Shares to Be            Be
                                                   Shares               Number of         Beneficially       Beneficially
                                                Beneficially          Shares Which         Owned After       Owned After
                                               Owned Prior to          May Be Sold            this               the
                  Name                        this Offering(1)          Hereunder          Offering(2)       Offering(2)
- ------------------------------------------ --------------------    -----------------   ----------------   -------------------
                                                                                                      
RD New York VI, LLC                              134,661(3)              134,661                0                 *
Yale University                                 6,138,492(4)            6,138,492               0                 *
Yale University Retirement Plan for
Staff Employees                                  403,994(5)              403,994                0                 *
Vanderbilt University                           1,346,647(5)            1,346,647               0                 *
Carnegie Corporation of New York                 942,653(5)              942,653                0                 *
Howard Hughes Medical Institute                 2,266,667(6)            2,266,667               0                 *
Harvard Private Capital Realty, Inc.          2,000,000(6)(7)           2,000,000               0                 *
The Board of Trustees of the Leland
Stanford Junior University                      2,133,333(6)            2,133,333               0                 *
TRW Master Trust                                1,200,000(6)            1,200,000               0                 *
Five Arrows Realty Securities LLC             3,266,667(8)(9)           2,266,667           1,000,000          3.89(10)
Chestnut Hill Trust                              76,426(11)              76,426                 0                 *
Naperville Associates                           166,248(12)              166,248                0                 *
Global Investors Corp.                          468,072(13)              468,072                0                 *
 Jack Nash                                      364,393(14)              364,393                0                 *
Brown University                                685,997(15)              685,997                0                 *



909738.9
                                       27







                                                                                            Number of       Percentage to
                                                                         Maximum          Shares to Be            Be
                                                   Shares               Number of         Beneficially       Beneficially
                                                Beneficially          Shares Which         Owned After       Owned After
                                               Owned Prior to          May Be Sold            this               the
                  Name                        this Offering(1)          Hereunder          Offering(2)       Offering(2)
- ------------------------------------------ --------------------    -----------------   ----------------   -------------------
                                                                                                      
Halil Bezman                                    225,288(16)              225,288                0                 *
SRRD Associates, L.P.                           731,089(16)              731,089                0                 *
Samada Limited (as Trustee of the
Forest Trust)                                  1,855,974(17)            1,855,974               0                 *
Pragusa One Inc.                                892,030(18)              892,030                0                 *
L & J Realty Company                               2,000                  2,000                 0                 *
Ross Dworman(19)                                799,149(20)              595,149             204,000              *
Kenneth Bernstein(21)                           395,223(22)              261,691             133,532              *
RD Woonsocket, Inc.(23)                            7,540                  7,540                 0                 *
RD Abington, Inc.(23)                              3,684                  3,684                 0                 *
RD Missouri, Inc.(23)                              2,883                  2,883                 0                 *
RD Merrilville, Inc.(23)                           7,799                  7,799                 0                 *
RD Elmwood, Inc.(23)                               5,205                  5,205                 0                 *
RD Village, Inc.(23)                               9,545                  9,545                 0                 *
RD Marley, Inc.(23)                                6,807                  6,807                 0                 *
RD Soundview Inc.(23)                              6,323                  6,323                 0                 *
RD Bloomfield Inc.(23)                             5,399                  5,399                 0                 *
RD Hobson, Inc.(24)                                5,189                  5,189                 0                 *
RD Townline, Inc.(24)                              5,036                  5,036                 0                 *
RD Whitegate, Inc.(24)                             1,650                  1,650                 0                 *
RD Crossroads Inc.(24)                             8,443                  8,443                 0                 *
RD Smithtown Inc.(24)                              7,642                  7,642                 0                 *
RD New York, LLC(25)                              103,936                103,936                0                 *
Homkor Colony, L.P.                                31,333                31,333                 0                 *
G.O. Associates Limited Partnership              38,877(26)              38,877                 0                 *
Great Universal Capital Corp.                     220,300                220,300                0                 *
Cheerful Corp.                                  118,391(27)              118,391                0                 *



909738.9
                                       28







                                                                                            Number of       Percentage to
                                                                         Maximum          Shares to Be            Be
                                                   Shares               Number of         Beneficially       Beneficially
                                                Beneficially          Shares Which         Owned After       Owned After
                                               Owned Prior to          May Be Sold            this               the
                  Name                        this Offering(1)          Hereunder          Offering(2)       Offering(2)
- ------------------------------------------ --------------------    -----------------   ----------------   -------------------
                                                                                                      
Wanda Dworman                                    8,475(27)                8,475                 0                 *
David Dworman                                    2,825(27)                2,825                 0                 *
Evan Frazier Partners(28)                          19,739                19,739                 0                 *
Evan Frazier Realty LLC(29)                       294,434                294,434                0                 *
RD Greenbelt, Inc.(30)                             55,011                55,011                 0                 *
KAL Partners, L.P.                                102,068                102,068                0                 *
Michael A. Young                                   34,005                34,005                 0                 *
Mindy White(31)                                    17,029                17,029                 0                 *
S&J Roth Revocable Trust                           25,517                25,517                 0                 *
Rabinowitz Family 1991 Trust                       21,247                21,247                 0                 *
Rabinowitz Family 1986 Trust                       21,247                21,247                 0                 *
Perry Kamerman(32)                              154,866(33)              50,000              104,866              *
Joel Braun(34)                                   84,334(35)               6,667              77,667               *
Eric Newberg                                       8,000                  8,000                 0                 *
Robert Masters(36)                               66,888(37)               4,667              62,221               *
Jay A. Kaiser                                    38,667(38)            38,667(39)               0                 *
H. Robert Holmes                                 25,067(38)            25,067(39)               0                 *
Steve Bollerman                                  1,333(38)              1,333(39)               0                 *
AmCap Incorporated                               44,267(38)            44,267(39)               0                 *
Lennox Securities, Inc.                         185,600(38)           185,600(39)               0                 *
         TOTALS                                                       26,719,319               --                 --
                                                                      ==========


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

(*)      Less than 1%.

(1)      Beneficial  ownership based upon information provided by the respective
         Selling  Shareholders  and is based upon a common share price of $7.50.
         Beneficial  ownership  will  differ at  alternate  share  prices due to
         allocations  of  distributions  as provided in the various  partnership
         agreements of the partnerships which are currently the

909738.9
                                       29





         record  owners of these  shares as noted in the  applicable  footnotes.
         Assumes  that all OP Units  held by or  attributable  to the person are
         exchanged for common shares.

(2)      Assumes sale of all common shares registered hereunder.

(3)      As of the date of this prospectus, the record owner of 134,395 of these
         common shares is RD Properties, L.P. VI, the record owner of 133 common
         shares  is RD  Properties,  L.P.  VIA,  and  the  record  owner  of the
         remaining  133 common  shares is RD  Properties,  L.P.,  VIB. All three
         limited  partnerships  are expected to distribute their shares to their
         partners,  including the Selling  Shareholder,  in accordance  with the
         terms of their respective partnership agreements, prior to their resale
         pursuant  to this  prospectus.  The LLC is 80% owned by Dworman and 20%
         owned by Mr. Bernstein.

(4)      As of the date of this  prospectus,  the record  owner of  3,366,616 of
         these common shares is RD Properties,  L.P. VI, and the record owner of
         the remaining  2,771,876  common shares is RD Properties,  L.P. V. Both
         limited  partnerships  are expected to distribute their shares to their
         partners,  including the Selling  Shareholder,  in accordance  with the
         terms of their respective partnership agreements, prior to their resale
         pursuant to this prospectus.

(5)      As of the date of this  prospectus,  the record  owner of these  common
         shares is RD  Properties,  L.P. VI, which is expected to distribute its
         shares  to  its  partners,   including  the  Selling  Shareholder,   in
         accordance with the terms of its partnership agreement,  prior to their
         resale pursuant to this prospectus.

(6)      As of the date of this  prospectus,  the record  owner of these  common
         shares is RD Properties,  L.P. VIA, which is expected to distribute its
         shares  to  its  partners,   including  the  Selling  Shareholder,   in
         accordance with the terms of its partnership agreement,  prior to their
         resale pursuant to this prospectus.

(7)      Charlesbank  Capital  Partners,  LLC  ("Charlesbank"),  a Massachusetts
         limited liability company,  pursuant to an agreement among Charlesbank,
         the President and Fellows of Harvard  College and certain  individuals,
         has sole power to direct the vote of these shares and may be deemed the
         beneficial owner of these shares.

(8)      As of the date of this  prospectus,  the record  owner of  2,266,667 of
         these common shares is RD  Properties,  L.P. VIB,  which is expected to
         distribute   its  shares  to  its   partners,   including  the  Selling
         Shareholder, in accordance with the terms of its partnership agreement,
         prior to their resale pursuant to this prospectus.  In a series of open
         market  purchases  between  September 3, 1998 and April 20, 1999,  Five
         Arrows Realty  Securities  L.L.C.  acquired  1,000,000 common shares as
         reported in the  statement on Schedule 13D filed by Acadia on September
         15, 1998, as amended by Amendment  No.1 on May 21, 1999,  and Amendment
         No. 2 on May 24, 1999.

(9)      Rothschild  Realty Investors II L.L.C.,  a Delaware  limited  liability
         company  and sole  managing  member of Five  Arrows  Realty  Securities
         L.L.C., may be deemed the beneficial owner of these shares.

(10)     Assumes the Selling  Shareholder  sold all its shares which are covered
         by this  prospectus  (i.e.,  2,266,667) and no Selling  Shareholder who
         holds OP Units has converted such OP Units to common shares.

(11)     As of the date of this prospectus,  the record owner of 60,267 of these
         common  shares is RD  Properties,  L.P.  II, the record  owner of 4,520
         common  shares is Columbia  VGH  Investors  and the record owner of the
         remaining  11,639  common shares is RD  Bloomfield  Associates  Limited
         Partnership II.

(12)     As of the date of this prospectus,  the record owner of 60,267 of these
         common  shares is RD  Properties,  L.P. II, and the record owner of the
         remaining  105,981  common shares is RD Bloomfield  Associates  Limited
         Partnership  II. Both limited  partnerships  are expected to distribute
         their shares to their partners,  including the Selling Shareholder,  in
         accordance with the terms of their respective  partnership  agreements,
         prior to their resale pursuant to this prospectus.


909738.9
                                       30





(13)     As of the date of this prospectus, the record owner of 362,091 of these
         common  shares is RD  Properties,  L.P. II and the record  owner of the
         remaining  105,981  common shares is RD Bloomfield  Associates  Limited
         Partnership II.

(14)     As of the date of this prospectus,  the record owner of 60,267 of these
         common  shares is RD  Properties,  L.P.  II, the record owner of 48,024
         common  shares is Columbia VGH  Investors,  the record owner of 105,981
         common shares is RD Bloomfield  Associates  Limited  Partnership II and
         the  record  owner  of  the  remaining  150,121  common  shares  is  RD
         Properties, L.P. III.

(15)     As of the date of this prospectus, the record owner of 120,663 of these
         common  shares is RD  Properties,  L.P. II, the record owner of 300,242
         common shares is RD  Properties,  L.P. III, the record owner of 138,603
         common  shares is RD  Properties,  L.P.,  V, the record owner of 31,074
         common  shares is Columbia  VGH  Investors  and the record owner of the
         remaining  95,415 common shares is RD Bloomfield  Associates,  L.P. II.
         All five limited  partnerships  are expected to distribute their shares
         to their  partners,  including the Selling  Shareholder,  in accordance
         with the terms of their  respective  partnership  agreements,  prior to
         their resale pursuant to this prospectus.

(16)     As of the date of this  prospectus,  the record  owner of these  common
         shares is RD Properties,  L.P. III, which is expected to distribute its
         shares  to  its  partners,   including  the  Selling  Shareholder,   in
         accordance with the terms of its partnership agreement,  prior to their
         resale pursuant to this prospectus.

(17)     As of the date of this prospectus, the record owner of 300,242 of these
         common shares is RD  Properties,  L.P. III, and the record owner of the
         remaining  1,555,732  common  shares is RD  Properties,  L.P.  IV. Both
         limited  partnerships  are expected to distribute their shares to their
         partners,  including the Selling  Shareholder,  in accordance  with the
         terms of their respective partnership agreements, prior to their resale
         pursuant to this prospectus.

(18)     As of the date of this prospectus, the record owner of 225,288 of these
         common shares is RD  Properties,  L.P. III, and the record owner of the
         remaining 666,742 common shares is RD Properties, L.P. IV. Both limited
         partnerships are expected to distribute their shares to their partners,
         including  the Selling  Shareholder,  in  accordance  with the terms of
         their respective partnership agreements, prior to their resale pursuant
         to this prospectus.

(19)     Mr.  Dworman  is  currently  Chairman  and Chief  Executive  Officer of
         Acadia.

(20)     Reflects the common  shares  beneficially  owned by Mr.  Dworman in his
         individual capacity (either directly or indirectly). The 737,399 common
         shares he directly owns in his individual capacity include: (i) 533,399
         shares  issuable upon the  conversion of OP Units,  (ii) 200,000 shares
         issuable  upon the  exercise of stock  options  and (iii) 4,000  shares
         purchased on the open market.  The 61,750  common  shares he indirectly
         owns in his  individual  capacity  (through  his  equity  interests  in
         various limited partnerships) are attributable to him as follows:


Partnership Name                                     Beneficial Interest
- ----------------                                     -------------------

RD Properties, L.P. II                                    11,578

RD Town Square Associates                                  5,362

Columbia VGH Investors                                     1,129

RD Properties, L.P. III                                   21,233

RD Properties, L.P. IV                                    22,448
                                                          ------


909738.9
                                       31





Partnership Name                                     Beneficial Interest
- ----------------                                     -------------------

                                                            61,750
                                                            ======

         In the aggregate,  Mr. Dworman is deemed to beneficially own 14,086,915
         common  shares,  which in addition to the shares held by Mr. Dworman in
         his individual capacity (x) as noted above (799,149) or (y) as noted in
         footnote (26) (3,887), include:

         (i)      12,848,990  shares  which  represent  80% of the total  common
                  shares of RD Properties,  L.P. VI, RD Properties, L.P. VIA and
                  RD Properties,  L.P. VIB  (collectively  the "RD Funds") which
                  Mr. Dworman is deemed to  beneficially  own as an 80% managing
                  member of RD New York VI LLC,  the  general  partner of the RD
                  Funds and indirect owner of 134,661 shares.  Mr. Dworman's 80%
                  share of the 134,661 shares is 107,728.


         (ii)     55,185  common  shares  beneficially  owned by Mr.  Dworman by
                  virtue  of  his  100%  equity   interest  in  those   entities
                  designated by footnote (23).

         (iii)    22,368  common  shares  beneficially  owned by Mr.  Dworman by
                  virtue of his 80% equity interest in those entities designated
                  by footnote (24).

         (iv)     83,149  common  shares  beneficially  owned by Mr.  Dworman by
                  virtue  of his  80%  equity  interest  in RD New  York  LLC as
                  described in footnote (25).

         (v)      15,791 common shares  beneficially owned by Mr. Dworman virtue
                  of his  80%  equity  interest  in  Evan  Frazier  Partners  as
                  described in footnote (28).

         (vi)     214,937  common shares  beneficially  owned by Mr.  Dworman by
                  virtue  of his 73%  interest  in Evan  Frazier  Realty  LLC as
                  described in footnote (29).

         (vii)    43,459  common  shares  beneficially  owned by Mr.  Dworman by
                  virtue of his 79% equity  interest  in RD  Greenbelt,  Inc. as
                  described in footnote (30).


         (viii)   Mr.   Dworman  owns  3,499  common   shares  and  388  shares,
                  respectively,   in  his  own  name  through  the   partnership
                  described in footnote 26 and through RD G.O. Properties, Inc.,
                  a wholly owned corporation.


(21)     Mr. Bernstein is currently President of the trust.


(22)     Reflects the common shares  beneficially  owned by Mr. Bernstein in his
         individual capacity.  These shares include: (i) 261,691 shares issuable
         upon the conversion of OP Units,  (ii) 100,000 shares issuable upon the
         exercise of stock options, (iii) 25,532 restricted shares issued to Mr.
         Bernstein  on January 3, 2000  (which  shares are not being  registered
         under this  registration  statement) and (iv) 8,000 shares purchased on
         the  open  market.  In the  aggregate,  Mr.  Bernstein  is  deemed  to
         beneficially  own 3,711,182  common  shares  which,  in addition to the
         shares held by Mr. Bernstein in his individual capacity, include:

         (i)      3,212,248  shares  which  represent  20% of the  total  common
                  shares  of the RD Funds  which  Mr.  Bernstein  is  deemed  to
                  beneficially  own as a 20%  managing  member of RD New York VI
                  LLC, the general  partner of the RD Funds and owner of 134,661
                  shares.  Mr.  Bernstein's  20% share of the 134,551  shares is
                  26,933.

         (ii)     5,593 common  shares  beneficially  owned by Mr.  Bernstein by
                  virtue of his 20% equity interest in those entities designated
                  by footnote (24).


909738.9
                                       32





         (iii)    20,787 common shares beneficially owned by Mr. Bernstein by
                  virtue of his 20% equity interest in RD New York LLC as
                  described in footnote (25).

         (iv)     3,948 common  shares  beneficially  owned by Mr.  Bernstein by
                  virtue of his 20% equity interest in Evan Frazier  Partners as
                  described in footnote (28).

         (v)      61,831 common shares  beneficially  owned by Mr.  Bernstein by
                  virtue  of his 21%  interest  in Evan  Frazier  Realty  LLC as
                  described in footnote (29).

         (vi)     11,552 common shares  beneficially  owned by Mr.  Bernstein by
                  virtue of his 21% interest in RD Greenbelt,  Inc. as described
                  in footnote (30).


(23)     Mr. Dworman is the sole shareholder of this corporation.


(24)     Messrs.  Dworman and  Bernstein own 80% and 20%,  respectively,  of the
         issued and outstanding shares.


(25)     Messrs.  Dworman and Bernstein own 80% and 20%,  respectively,  of this
         limited liability corporation.


(26)     Mr.  Dworman  owns 3,499  common  shares and 388 shares,  respectively,
         through  this   partnership  in  his  own  name  and  through  RD  G.O.
         Properties, Inc., a wholly owned corporation.


(27)     As of the date of this  prospectus,  the record  owner of these  common
         shares in Columbia VGH Investors.


(28)     Messrs.  Dworman and  Bernstein own 80% and 20%, respectively,  of this
         partnership.


(29)     Messrs.  Dworman and Bernstein own 73% and 21%,  respectively,  of this
         partnership.


(30)     Messrs.  Dworman and  Bernstein own 79% and 21%,  respectively,  of the
         issued and outstanding shares.


(31)     Mrs. White is married to Gregory White, a trustee of Acadia.


(32)     Mr. Kamerman is currently a Senior Vice President and Treasurer of
         Acadia.


(33)     These shares include: (i) 50,000 shares issuable upon the conversion of
         OP Units,  (ii)  103,334  shares  issuable  upon the  exercise of stock
         options and (iii) 1,532  restricted  shares  issued to Mr.  Kamerman on
         January  3, 2000  (which  shares  are not being  registered  under this
         registration statement).

(34)     Mr. Braun is currently a Senior Vice President of Acadia.


(35)     These shares include:  (i) 6,667 shares issuable upon the conversion of
         OP Units,  (ii)  76,667  shares  issuable  upon the  exercise  of stock
         options and (iii) 1,000 shares purchased on the open market.

(36)     Mr. Masters is currently a Senior Vice President and General Counsel of
         Acadia.


(37)     These shares include:  (i) 4,667 shares issuable upon the conversion of
         OP Units,  (ii)  56,667  shares  issuable  upon the  exercise  of stock
         options, (iii) 2,554 restricted shares issued to Mr. Masters on January
         3, 2000 (which shares are not being registered under this  registration
         statement) and (iv) 3,000 shares purchased on the open market.

(38)     As of the  date of this  prospectus,  this  Selling  Shareholder  holds
         preferred OP Units which were issued pursuant to a certain Agreement of
         Contribution dated November 8, 1999. Preferred OP Units are convertible
         into  regular  OP Units at a rate of  approximately  133.33  regular OP
         Units for each preferred OP Unit. Regular OP


909738.9
                                       33





         Units  are  convertible  into  common  shares on a  one-for-one  basis.
         Amounts  set forth in the table  reflect the "as  converted"  number of
         common shares held by each Selling  Shareholder  as of the date of this
         prospectus.

(39)     These  shares  are  subject  to a lock-up  agreement  that,  subject to
         certain   limited   exceptions,   would  prohibit  the  sale  or  other
         disposition  of such  common  shares  pursuant  to this  prospectus  or
         otherwise until November 16, 2000.


909738.9
                                       34






                              PLAN OF DISTRIBUTION

         This prospectus  relates to the offer and sale from time to time by the
persons listed under the Selling  Shareholders  section of this prospectus of up
to 26,719,319 common shares. We have issued 16,061,238  restricted common shares
to  certain  Selling  Shareholders  and may issue  further  shares to the extent
certain other Selling Shareholders exchange their 10,658,081 OP Units, including
294,934 OP Units  issuable upon the  conversion  of preferred OP Units,  held by
them in our subsidiary, the operating partnership, for an equal number of common
shares. We have registered the Selling Shareholders' common shares for resale to
provide them with freely tradeable  securities.  However,  registration of their
shares  does not  necessarily  mean that  they  will  offer or sell any of their
shares.  We will not receive  any  proceeds  from the  offering or sale of their
shares.

         Selling  Shareholders  (or  pledgees,   donees,  transferees  or  other
successors  in  interest)  may sell the common  shares to which this  prospectus
relates  from time to time on the New York  Stock  Exchange,  where  our  common
shares are listed for  trading,  in other  markets  where our common  shares are
traded, in negotiated transactions, through underwriters or dealers, directly to
one or more  purchasers,  through  agents or in a combination of such methods of
sale.  They will sell the common  shares at prices  which are  current  when the
sales take place or at other prices to which they agree. All costs, expenses and
fees in connection  with the  registration  of the common shares  offered hereby
will be borne by us. Brokerage commissions and similar selling expenses, if any,
attributable  to the sale of common shares  offered  hereby will be borne by the
Selling Shareholders.

         The Selling  Shareholders  may effect such  transactions by selling the
common shares offered hereby  directly to purchasers or through  broker-dealers,
which  may  act  as  agents  or  principals.  Such  broker-dealers  may  receive
compensation  in the form of discounts,  concessions,  or  commissions  from the
Selling  Shareholders  and/or the purchasers of the common shares offered hereby
for  whom  such  broker-dealers  may  act as  agents  or to  whom  they  sell as
principal, or both (which compensation as to a particular broker-dealer might be
in excess of customary commissions).

         In connection with an underwritten offering, underwriters or agents may
receive compensation in the form of discounts, concessions or commissions from a
Selling  Shareholder  or from  purchasers of the shares which are the subject of
this prospectus for whom they may act as agents,  and  underwriters may sell the
shares which are the subject of this prospectus to or through dealers,  and such
dealers  may  receive  compensation  in the form of  discounts,  concessions  or
commissions  from the  underwriters  and/or  commissions from the purchasers for
whom  they  may  act as  agents.  We  have  agreed  to  indemnify  each  Selling
Shareholder against certain liabilities, including liabilities arising under the
Securities  Act.  The Selling  Shareholders  may agree to  indemnify  any agent,
dealer or broker-dealer that participates in transactions involving sales of the
common shares offered hereby against certain liabilities,  including liabilities
arising under the Securities Act.

         The  shares  which  are  the  subject  of this  prospectus  may be sold
directly or through  broker-dealers acting as principal or agent, or pursuant to
a distribution by one or more  underwriters on a firm commitment or best-efforts
basis.  The methods by which the shares which are the subject of this prospectus
may be sold  include:  (a) a block trade in which the  broker-dealer  so engaged
will  attempt to sell such shares as agent but may position and resell a portion
of the block as principal to  facilitate  the  transaction;  (b)  purchases by a
broker-dealer  as principal  and resale by such  broker-  dealer for its account
pursuant  to  this   prospectus;   (c)  ordinary   brokerage   transactions  and
transactions  in  which  the  broker  solicits   purchasers;   (d)  an  exchange
distribution in accordance  with the rules of the New York Stock  Exchange;  (e)
privately  negotiated  transactions;  and  (f)  underwritten  transactions.  The
Selling  Shareholders and any underwriters,  dealers or agents  participating in
the  distribution  of the shares which are the subject of this prospectus may be
deemed to be  "underwriters"  within the meaning of the Securities  Act, and any
profit  on  the  sale  of  such  shares  by the  Selling  Shareholders  and  any
commissions received by any such broker-dealers may be deemed to be underwriting
commissions  under the  Securities  Act.  None of the Selling  Shareholders  has
informed us as to their plan of distribution.



909738.9
                                       35





                                     EXPERTS

         The financial  statements and schedule included in the annual report on
form 10-K for the fiscal year ended December 31, 1998  incorporated by reference
in this  prospectus  and  elsewhere  in this  registration  statement  have been
audited  by  Ernst  &  Young  LLP.  These  audited   financial   statements  are
incorporated  in this  prospectus by reference in reliance upon the authority of
Ernst & Young LLP as experts in accounting and auditing.


                                  LEGAL MATTERS

         Certain  legal matters will be passed upon for us by Battle Fowler LLP,
New York,  New York.  The validity of the common shares  offered  hereby will be
passed upon for us by  Berliner,  Corcoran & Rowe  L.L.P.,  Washington,  D.C. In
addition, the description of federal income tax matters contained in the section
of this prospectus  entitled "Federal Income Tax Considerations" is based on the
opinion of Battle Fowler LLP.

909738.9
                                       36





No   dealer,   salesperson   or  other
individual has been authorized to give
any    information    or   make    any
representations  not contained in this
prospectus  in  connection   with  the                26,719,319 Shares
offering  covered by this  prospectus.
If given or made, such  information or
representation must not be relied upon
as having been authorized by Acadia or
the   Selling    Shareholders.    This
prospectus   does  not  constitute  an               Acadia Realty Trust
offer to sell, or a solicitation of an
offer to buy, the common shares in any
jurisdiction  where,  or to any person                  Common Shares
to whom,  it is  unlawful to make such
offer  or  solicitation.  Neither  the
delivery  of this  prospectus  nor any
sale made hereunder  shall,  under any
circumstances,  create an  implication
that  there has not been any change in
the facts set forth in this prospectus
or in the affairs of our company since
the date hereof.                                       ______________________

           ______________________
                                                           PROSPECTUS
           TABLE OF CONTENTS
                                                      ______________________
           ______________________

              Prospectus

                                                             , 2000

                                                                          Page
                                                                          ----

WHERE YOU CAN FIND MORE INFORMATION..........................................5

INCORPORATION OF CERTAIN DOCUMENTS BY
REFERENCE....................................................................5

FORWARD-LOOKING INFORMATION..................................................6

PROSPECTUS SUMMARY...........................................................7

RISK FACTORS.................................................................8

OUR COMPANY.................................................................12

DESCRIPTION OF OUR COMMON SHARES............................................12

USE OF PROCEEDS.............................................................17

INTERESTS OF NAMED EXPERTS AND COUNSEL......................................17

FEDERAL INCOME TAX CONSIDERATIONS...........................................17

SELLING SHAREHOLDERS........................................................27

PLAN OF DISTRIBUTION........................................................35

EXPERTS.....................................................................36

LEGAL MATTERS...............................................................36

909738.9






                                     PART II


                     INFORMATION NOT REQUIRED IN PROSPECTUS


Item 14.  Other Expenses of Issuance and Distribution.

         Set forth below is an estimate  of the  approximate  amount of the fees
and expenses (other than underwriting  commissions and discounts) payable by the
Registrant  in  connection  with the  issuance  and  distribution  of the common
shares.

SEC registration fee................................................$35,489.94
Printing expenses......................................................$700.00
Accounting fees and expenses.........................................$3,500.00
Legal fees and expenses.............................................$40,000.00
Miscellaneous expenses..............................................$10,000.00

              Total.................................................$89,689.94
                                                                    ==========

Item 15.  Indemnification of Directors and Officers.

         Our bylaws and  declaration  of trust  authorize  our  company,  to the
extent  permitted  under Maryland law, to indemnify its trustees and officers in
their capacity as such.  Section  8-301(15) of the Maryland General  Corporation
Law  ("MGCL")  permits a  Maryland  REIT to  indemnify  or advance  expenses  to
trustees  and  officers to the same extent as is  permitted  for  directors  and
officers of a Maryland  corporation  under the MGCL The MGCL requires a Maryland
corporation  (unless its charter  provides  otherwise,  which our declaration of
trust does not) to indemnify a director or officer who has been  successful,  on
the merits or otherwise,  in the defense of any proceeding to which he is made a
party by reason of his  service in that  capacity.  The MGCL  permits a Maryland
corporation  to indemnify its present and former  directors and officers,  among
others, against judgments, penalties, fines, settlements and reasonable expenses
actually incurred by them in connection with any proceeding to which they may be
made a party by reason of their service in those or other  capacities  unless it
is  established  that (a) the act or  omission  of the  director  or officer was
material to the matter  giving rise to the  proceeding  and (i) was committed in
bad faith or (ii) was the result of active and  deliberate  dishonesty,  (b) the
director or officer  actually  received an improper  personal  benefit in money,
property or services or (c) in the case of any criminal proceeding, the director
or  officer  had  reasonable  cause  to  believe  that the act or  omission  was
unlawful.  However,  a Maryland  corporation  may not  indemnify  for an adverse
judgment  in a suit by or in the right of the  corporation  or for a judgment of
liability on the basis that a personal benefit was improperly  received,  unless
in either case a court orders  indemnification  and then only for  expenses.  In
addition,  the MGCL permits a corporation  to advance  reasonable  expenses to a
director or officer upon the corporation's  receipt of a written  affirmation by
the  director or officer of his or her good faith  belief that he or she has met
the standard of conduct necessary for  indemnification  by the corporation and a
written  undertaking  by such  director or officer on his or her behalf to repay
the amount paid or  reimbursed  by the  corporation  if it shall  ultimately  be
determined that the standard of conduct was not met.

         Our bylaws  also  permit the  company,  subject to the  approval of our
board of trustees, to indemnify and advance expenses to any person who served as
a predecessor of the company in any of the capacities described above and to any
employee or agent of the company or a predecessor of the company.

         In addition  to the above,  our company  has  purchased  and  maintains
insurance  on behalf  of all of its  trustees  and  executive  officers  against
liability asserted against or incurred by them in their official capacities with
the  company,  whether  or not the  company  is  required  or has the  power  to
indemnify them against the same liability.

909738.9
                                       38





Item 16.  Exhibits.



                                                                          
3.1(a)         Declaration of Trust of the registrant, as amended               Incorporated by reference to the
                                                                                copy thereof filed as an exhibit to
                                                                                the registrant's Form 10-K for the
                                                                                fiscal year ended December 31,
                                                                                1994, filed with the SEC on March
                                                                                17, 1995 (SEC File No. 001-12002)

3.1(b)         Fourth Amendment to Declaration of Trust of the registrant       Incorporated by reference to the
                                                                                copy thereof filed as an Exhibit to
                                                                                the registrant's Form10-Q for the
                                                                                quarter ended September 30, 1998,
                                                                                filed with the SEC on November
                                                                                16, 1998

3.2            Bylaws of the registrant                                         Incorporated by reference to the
                                                                                copy thereof filed as an exhibit to
                                                                                the registrant's Form S-11 filed with
                                                                                the SEC on March 25, 1993  (SEC
                                                                                File No. 33-60008)

4.1            Specimen Share Certificate                                       Incorporated by reference to Exhibit
                                                                                4.1 to Amendment No. 3 to the
                                                                                registrant's registration statement on
                                                                                Form S-11 filed with the SEC on
                                                                                May 23, 1993

5.1            Opinion of Berliner, Corcoran & Rowe L.L.P. regarding the        Filed herewith
               legality of the securities being registered

8.1            Opinion of Battle Fowler LLP regarding certain tax matters       Filed herewith

10.1(a)        Agreement of Limited Partnership of the operating partnership    Incorporated  by reference to the copy
                                                                                thereof   filed  as  an   exhibit   to
                                                                                Amendment  No.3  to  the  registrant's
                                                                                Form S-11  filed with the SEC on March
                                                                                25, 1993.



10.1(b)        First,  Second and Third Amendments  to the  Agreement of        Incorporated  by  reference  to  the
               Limited Partnership of the operating partnership                 copy thereof filed as an exhibit to
                                                                                the registrant's Form 10-K for the
                                                                                fiscal year ended  December  31, 1998,
                                                                                filed  with the SEC on March 31,  1999



10.1(c)        Amended and Restated Agreement of Limited Partnership of         Filed herewith
               the  operating   partnership


10.1(d)        First and Second Amendments to the Amended and Restated          Filed herewith
               Agreement of Limited Partnership of the operating partnership


23.1           Consent of Berliner, Corcoran & Rowe  L.L.P. (included  in       Filed herewith
               Exhibit  5.1)


23.2           Consent of Battle Fowler LLP (included in Exhibit 8.1)           Filed herewith


23.3           Consent  of  Ernst  & Young  LLP  (New York, New York)           Filed herewith



909738.9
                                       39





                                                                          
24.1           Power of Attorney (included on signature page hereto)            Filed herewith


99.1(a)        Registration Rights and Lock-Up Agreement (RD Capital            Filed herewith
               Transaction)


99.1(b)        Registration Rights and Lock-Up Agreement (Pacesetter            Filed herewith
               Transaction)



Item 17.  Undertakings.

      The undersigned registrant hereby undertakes:

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

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

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

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

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

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

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

         The  undersigned  registrant  hereby  undertakes  that, for purposes of
determining  any liability  under the Securities Act of 1933, each filing of the
registrant's  annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable,  each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the  registration  statement shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the  initial  bona  fide  offering  thereof.

         Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors,  officers and controlling  persons of
the  registrant  pursuant  to the  provisions  referred  to in  Item  15 of this
Registration  Statement,  or otherwise,  the registrant has been advised that in
the  opinion  of the SEC  such  indemnification  is  against  public  policy  as
expressed in the Act and is, therefore, unenforceable. In the event that a claim
for  indemnification  against  such  liabilities  (other than the payment by the
registrant of expenses incurred or paid by a director,  officer,  or controlling
person of the  registrant  in the  successful  defense of any action,  suit,  or
proceeding) is asserted by such

909738.9
                                       40





director, officer, or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction  the question as to whether such  indemnification  by it is against
public  policy  as  expressed  in the act,  and will be  governed  by the  final
adjudication of such issue.

909738.9
                                       41






                                   SIGNATURES

         Pursuant to the  requirements  of the  Securities  Act of 1933,  Acadia
Realty Trust  certifies that it has reasonable  grounds to believe that it meets
all of the  requirements  for  filing  on  Form  S-3 and has  duly  caused  this
Registration Statement to be signed on its behalf by the undersigned,  thereunto
duly authorized, in the City of Port Washington,  State of New York, on this 2nd
day of March, 2000.


                           ACADIA REALTY TRUST
                           A Maryland real estate investment trust (registrant)

                           By:   /s/ Ross Dworman
                               ----------------------
                               Name: Ross Dworman
                               Title:   Chief Executive Officer


                                POWER OF ATTORNEY

         KNOW  ALL MEN BY THESE  PRESENTS,  that  each  person  whose  signature
appears below  constitutes  and appoints Ross Dworman and Kenneth F.  Bernstein,
and each of them, his true and lawful  attorneys-in-fact  and agents,  with full
power or substitution  and  resubstitution,  for him and in his name,  place and
stead,  in any  and all  capacities,  to sign  any  and all  amendments  to this
Registration  Statement,  and to file the same, with all exhibits  thereto,  and
other documents in connection  therewith,  granting unto said  attorneys-in-fact
and agents full power and  authority  to do and  perform  each and every act and
thing  requisite  and necessary to be done in and about the premises as fully to
all intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, or their substitutes, may
lawfully do or cause to be done by virtue thereof.

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities and on the dates indicated.



Signature                         Title                                                 Date
- ---------                         -----                                                 ----

                                                                                  
/s/ Ross Dworman                  Chairman of the Board of Trustees and Chief           March 2, 2000
- ---------------------------       Executive Officer (Principal Executive Officer)
Ross Dworman

/s/ Kenneth F. Bernstein          President and Trustee                                 March 2, 2000
- ----------------------------
Kenneth F. Bernstein

/s/ Perry S. Kamerman             Treasurer and Senior Vice President                   March 2, 2000
- --------------------------
Perry S. Kamerman

/s/ Martin L. Edelman             Trustee                                               March 2, 2000
- ---------------------------
Martin L. Edelman

/s/ Marvin L. Levine              Trustee                                               March 2, 2000
- ----------------------------
Marvin L. Levine

/s/  Lawrence J. Longua           Trustee                                               March 2, 2000
- --------------------------
Lawrence J. Longua

/s/ Gregory White                 Trustee                                               March 2, 2000
- -----------------------------
Gregory White




909738.9
                                       42






                                  EXHIBIT INDEX


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


3.1(a)                           Declaration of Trust of the registrant, as
                                 amended

3.1(b)                           Fourth Amendment to Declaration of Trust
                                 of the registrant

3.2                              Bylaws of the registrant

4.1                              Specimen Share Certificate

5.1                              Opinion of Berliner, Corcoran & Rowe
                                 L.L.P. regarding the legality of the
                                 securities being registered

8.1                              Opinion of Battle Fowler LLP regarding
                                 certain tax matters

10.1(a)                          Agreement of Limited Partnership of the
                                 operating partnership

10.1(b)                          First, Second and Third Amendments to
                                 the Agreement of Limited Partnership of
                                 the operating partnership

10.1(c)                          Amended and Restated Agreement of
                                 Limited Partnership of the operating
                                 partnership

10.1(d)                          First and Second Amendments to the
                                 Amended and Restated Agreement of
                                 Limited Partnership of the operating
                                 partnership

23.1                             Consent of Berliner, Corcoran & Rowe
                                 L.L.P. (included in Exhibit 5.1)

23.2                             Consent of Battle Fowler LLP (included in
                                 Exhibit 8.1)

23.3                             Consent of Ernst & Young LLP (New
                                 York, New York)

24.1                             Power of Attorney (included on signature
                                 page hereto)

99.1(a)                          Registration Rights and Lock-Up
                                 Agreement (RD Capital Transaction)

99.1(b)                          Registration Rights and Lock-Up
                                 Agreement (Pacesetter Transaction)



909738.9
                                       43