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                                                                    EXHIBIT 99.1

                             CONTRIBUTION AGREEMENT



                                  BY AND AMONG


                           BELCREST REALTY CORPORATION
                                       AND
                         BELAIR REAL ESTATE CORPORATION


                                       AND


                  SUN COMMUNITIES OPERATING LIMITED PARTNERSHIP

                                       AND

                              SUN COMMUNITIES, INC.



                         Dated: As of September 29, 1999



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                             CONTRIBUTION AGREEMENT


         THIS CONTRIBUTION AGREEMENT (this "AGREEMENT") is made as of September
29, 1999 ("AGREEMENT DATE"), by and among BELCREST REALTY CORPORATION, a
Delaware corporation and BELAIR REAL ESTATE CORPORATION, a Delaware corporation
(the "CONTRIBUTORS"), and SUN COMMUNITIES OPERATING LIMITED PARTNERSHIP, a
Michigan limited partnership (the "OPERATING PARTNERSHIP") and SUN COMMUNITIES,
INC., a Maryland corporation (the "COMPANY").

                                    RECITALS

         WHEREAS, Contributors desire to contribute to Operating Partnership
cash in return for Preference Units in Operating Partnership on the terms and
conditions herein set forth.

         NOW, THEREFORE, in consideration of the mutual covenants contained
herein and other good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged, the parties hereby agree as follows:

         1.       DEFINITIONS. For purposes of this Agreement, the following
         terms shall have the meanings set forth below:

                  "AFFILIATE" means with respect to any Person, any other Person
         controlled by, controlling or under common control with such Person.
         For purposes hereof, "control" shall include the power to direct the
         actions of a Person, regardless of whether the same shall involve an
         ownership interest in such Person.

                  "AGREEMENT" has the meaning set forth in the initial paragraph
         hereof.

                  "AGREEMENT DATE" has the meaning set forth in the initial
         paragraph hereof.

                  "AGREEMENT OF LIMITED PARTNERSHIP" means the Second Amended
         and Restated Limited Partnership Agreement of Sun Communities Operating
         Limited Partnership, dated as of April 30, 1996, as amended by (i)
         those certain amendments numbered one through one hundred two, and (ii)
         the Amendment; and as further amended from time to time.

                  "AMENDMENT" means the One Hundred Third Amendment to the
         Agreement of Limited Partnership, dated as of the date hereof,
         substantially in the form attached hereto as EXHIBIT A.

                  "ARTICLES SUPPLEMENTARY" means the Articles Supplementary of
         the Company


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         substantially in the form attached hereto as EXHIBIT B.

                  "BELAIR" means Belair Real Estate Corporation.

                  "BELCREST" means Belcrest Realty Corporation.

                  "BROKER" has the meaning set forth in PARAGRAPH 10.

                  "BYLAWS" means the Bylaws of the Company, as amended from time
         to time.

                  "CHARTER" means the Articles of Amendment and Restatement of
         the Company, recorded on November 8, 1993, with the State of Maryland
         Department of Assessments and Taxation (the "SMDAT"), as amended by (i)
         that certain Articles of Amendment, recorded on June 20, 1997, with the
         SMDAT, (ii) Articles Supplementary, recorded on June 2, 1998, with the
         SMDAT, and (iii) the Articles Supplementary, and as further amended and
         restated from time to time.

                  "CLOSING" has the meaning set forth in PARAGRAPH 6(A).

                  "CODE" means the Internal Revenue Code of 1986, as amended.

                  "COMPANY" has the meaning set forth in the initial paragraph
         hereof.

                  "CONTRIBUTION AMOUNT" means $50,000,000 US$, such amount to be
         contributed severally $15,000,000 US$ by Belair and $35,000,000 US$ by
         Belcrest.

                  "CONTRIBUTORS" has the meaning set forth in the initial
         paragraph hereof.

                  "CONTRIBUTORS' CLOSING DOCUMENTS" has the meaning set forth in
         PARAGRAPH 6(C).

                  "ERISA" means the Employee Retirement Income Securities Act of
         1974, as amended.

                  "EXCHANGE DATE" means, with respect to any Preference Unit,
         the date on which the exchange of such Preference Unit for Preferred
         Stock shall occur in accordance with the Agreement of Limited
         Partnership.

                  "FINANCING AGREEMENTS" means collectively, that certain (i)
         Indenture, dated as of April 24, 1996, by and among the Company, the
         Operating Partnership and Bankers Trust Company, (ii) $25,500,000
         Facility and Guaranty Agreement, dated as of December 10, 1998, by and
         among the Company, the Operating Partnership, certain subsidiary
         guarantors named therein, The First National Bank of Chicago and
         certain


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         other lenders named therein, and (iii) Amended and Restated Senior
         Unsecured Line of Credit Agreement, dated as of July 1, 1999, by and
         among the Company, the Operating Partnership, Lehman Brothers Holdings
         Inc., The First National Bank of Chicago, First Union National Bank,
         Michigan National Bank, PNC Bank, Ohio, National Association and
         Pacific Life Insurance Company.

                  "GAAP" means generally accepted accounting principles
         consistently applied.

                  "GOVERNING DOCUMENTS" means, with respect to (i) a limited
         partnership, such limited partnership's certificate of limited
         partnership and the agreement of limited partnership, and any
         amendments or modifications of any of the foregoing; (ii) a
         corporation, such corporation's articles or certificate of
         incorporation, by-laws and any applicable authorizing resolutions, and
         any amendments or modifications of any of the foregoing; (iii) a
         limited liability company, such limited liability company's articles or
         certificate of organization, by-laws and operating agreement or
         agreement of limited liability company, and any amendments or
         modifications of any of the foregoing; and (iv) a trust, such trust's
         declaration of trust and by-laws and any amendments or modifications of
         any of the foregoing.

                  "MANAGER" means Boston Management and Research, a
         Massachusetts business trust.

                  "OPERATING PARTNERSHIP" has the meaning set forth in the
         initial paragraph hereof.

                  "OPERATING PARTNERSHIP'S CLOSING DOCUMENTS" has the meaning
         set forth in PARAGRAPH 6(B).

                  "PARITY PREFERRED STOCK" has the meaning ascribed to such term
         in the Articles Supplementary.

                  "PARTNER" has the meaning ascribed to such term in the
         Agreement of Limited Partnership.

                  "PERSON" means a natural person, partnership (whether general
         or limited), trust, estate, association, corporation, limited liability
         company, unincorporated organization, custodian, nominee or any other
         individual or entity in its own or representative capacity.

                  "PREFERENCE UNITS" shall have the meaning ascribed to "Series
         A Preferred Units" in the Amendment.

                  "PREFERRED STOCK" means the Company's 9.125% Series A
         Cumulative Redeemable Perpetual Preferred Stock upon terms and
         provisions set forth in the ARTICLES


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         SUPPLEMENTARY.

                  "PTP" means a "publicly traded partnership" within the meaning
         of Section 7704 of the Code.

                  "REGISTRATION RIGHTS AGREEMENT" has the meaning set forth in
         PARAGRAPH 6(B)(IV) hereof.

                  "REIT" has the meaning set forth in PARAGRAPH 8(G) hereof.

                  "SEC" means the Securities and Exchange Commission.

                  "SECURITIES ACT" means the Securities Act of 1933, as amended.

                  "SUBSIDIARY" means with respect to any Person, any
         corporation, partnership, limited liability company, joint venture or
         other entity of which a majority of (i) voting power of the voting
         equity securities or (ii) the outstanding equity interests, is owned,
         directly or indirectly, by such Person.

                  "US$" means United States dollars, lawful money of the United
         States of America.

         2.       CONTRIBUTION OF CASH. Subject to the terms and provisions of
this Agreement, Belcrest and Belair each hereby agrees to contribute to
Operating Partnership their portion of the Contribution Amount by wire transfer
of immediately available funds to an account designated by the Company on the
date of the Closing in consideration for Preference Units in Operating
Partnership. Subject to the terms and provisions of this Agreement, Operating
Partnership hereby agrees to accept the Contribution Amount and to issue to
Belair and Belcrest 600,000 and 1,400,000, respectively, Preference Units in
exchange therefor.

         3.       CONDITIONS TO CLOSING.

         (a)      Conditions to Operating Partnership's and Company's
Obligations. Operating Partnership's and Company's obligations under this
Agreement to accept the Contribution Amount, provide each Contributor with
Preference Units and otherwise consummate the transactions contemplated hereby
are subject to the satisfaction (or waiver in writing by Operating Partnership
and the Company) of the following conditions on or before the Closing:

                  (i)      No Injunction. No temporary restraining order or
                           preliminary or permanent injunction of any court or
                           administrative agency of competent jurisdiction
                           prohibiting the consummation of the transactions
                           contemplated hereby shall be in effect.


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                  (ii)     Accuracy of Representations and Warranties. The
                           representations and warranties of Contributors
                           contained in this Agreement shall be true and correct
                           in all material respects on the date of the Closing
                           with the same effect as though made on the date of
                           the Closing.

                  (iii)    Performance of Agreement. Each Contributor shall have
                           performed, in all material respects, all of its
                           respective covenants, agreements and obligations
                           required by this Agreement to be performed or
                           complied with by it prior to or at the Closing,
                           including, without limitation, delivery of the
                           Contribution Amount.

                  (iv)     Delivery of Closing Documents. Operating Partnership
                           and Company shall have received the Contributors'
                           Closing Documents.

         If for any reason any of the conditions set forth in this PARAGRAPH
3(A) or elsewhere in this Agreement are not satisfied or waived by Operating
Partnership and Company at or prior to the Closing, then, at Operating
Partnership's or Company's option, this Agreement shall be terminated and
Operating Partnership, Company and Contributors shall be released from their
obligations under this Agreement and none of Operating Partnership, Company or
Contributors shall have any further liability hereunder.

         (b)      Conditions to Contributors' Obligations. Contributors'
obligations under this Agreement to deliver the Contribution Amount and
otherwise consummate the transactions contemplated hereby are subject to the
satisfaction (or waiver in writing by Contributors) of the following conditions
on or before the Closing:

                  (i)      No Injunction. No temporary restraining order or
                           preliminary or permanent injunction or any court or
                           administrative agency of competent jurisdiction
                           prohibiting the consummation of the transactions
                           contemplated hereby shall be in effect.

                  (ii)     Accuracy of Representations and Warranties. The
                           representations and warranties of Operating
                           Partnership and Company contained in this Agreement
                           shall be true and correct in all material respects on
                           the date of the Closing with the same effect as
                           though made on the date of the Closing.

                  (iii)    Performance of Agreement. Operating Partnership and
                           Company shall have performed, in all material
                           respects, all of their respective covenants,
                           agreements and obligations required by this Agreement
                           to be performed or complied with by it prior to or at
                           the Closing.

                  (iv)     Delivery of Closing Documents. Contributors shall
                           have received the


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                           Operating Partnership's Closing Documents.

         If for any reason any of the conditions set forth in this PARAGRAPH
3(B) or elsewhere in this Agreement are not satisfied or waived by Contributors
at or prior to the Closing, then, at Contributors' option, this Agreement shall
be terminated and Contributors, Operating Partnership and Company shall be
released from their obligations under this Agreement and none of Contributors,
Operating Partnership or Company shall have any further liability hereunder.

         4.       COVENANTS.

         (a)      On the Exchange Date, the Company shall issue shares of
Preferred Stock in the Company in a number equal to the number of shares of
Preferred Stock into which the Preference Units are exchangeable pursuant to the
terms of the Agreement of Limited Partnership. Upon consummation of such
exchange in accordance with the terms of the Agreement of Limited Partnership,
and issuance in accordance with the Charter, such shares of Preferred Stock
shall be validly issued, fully paid and non-assessable.

         (b)      Operating Partnership covenants to notify holders of
Preference Units promptly (i) in the event it anticipates or realizes that the
value of its assets constituting "stock and securities" within the meaning of
Section 351(e)(1) of the Code will equal 10% or more of its total assets and
(ii) in the event it anticipates or realizes that there is a material increase
in such percentage of Operating Partnership's assets constituting "stock and
securities" if immediately preceding such material increase the percentage of
Operating Partnership's assets constituting "stock and securities" within the
meaning of Section 351(e)(1) of the Code equals 10% or more of the Operating
Partnership's total assets.

         (c)      Company agrees that it will notify holders of Preference Units
promptly in the event it becomes aware of any facts that will or likely will
cause Operating Partnership to become a PTP on or after January 1, 2000.

         (d)      Through the end of 1999, Operating Partnership: (i) shall
take all actions reasonably available to it under the Agreement of Limited
Partnership as presently in effect to avoid treatment as a PTP; and (ii) shall
at all times satisfy the private placement safe harbor of Notice 88-75 (1988-2
C.B. 386) taking into account any person treated as a partner within the meaning
of Notice 88-75 (including each person indirectly owning an interest through a
partnership, a grantor trust, or an S corporation) and substituting "400" for
"500". The Operating Partnership further (A) represents that it (i) was actively
engaged in an activity before December 4, 1995, (ii) did not add a substantial
new line of business after December 4, 1995 and (iii) has no plan or intention
to add a substantial new line of business and (B) covenants that it shall (i)
not add a substantial new line of business within the meaning of Section
1.7704-1(1)(3) prior to January 1, 2000 and (ii) shall promptly provide notice
to the holders of the Preference Units in the event that the Operating
Partnership plans or intends to add a substantial new line of business at any
time after January 1, 2000.


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         (e)      The Operating Partnership covenants that, for each taxable
year during which the Purchaser holds Preference Units, ninety percent (90%) or
more of the gross income of the Operating Partnership for such taxable year
shall constitute "qualifying income" within the meaning of Section 7704(d) of
the Code.

         (f)      Operating Partnership covenants that it shall deliver to
holders of Preference Units the following:

                  (i)      as soon as available, but in no event later than
         ninety (90) days following the end of each fiscal year of Operating
         Partnership, a complete copy of Operating Partnership's audited
         financial statements including a balance sheet, income statement and
         cash flow statement for such fiscal year prepared and audited by an
         independent certified public accountant in accordance with GAAP (which
         requirement, if the Operating Partnership is required to file
         disclosure statements with the SEC, shall be deemed to be satisfied
         upon the delivery to holders of Preference Units of Operating
         Partnership's Annual Report on Form 10-K, within five (5) business days
         of its filing with the SEC); and

                  (ii)     as soon as possible, but in no event later than
         forty-five (45) days following the end of each fiscal quarter of
         Operating Partnership, a complete copy of Operating Partnership's
         unaudited quarterly financial statements including a balance sheet,
         income statement and cash flow statement for such fiscal quarter
         prepared in accordance with GAAP (except with respect to
         footnotes)(which requirement, if the Operating Partnership is required
         to file disclosure statements with the SEC, shall be deemed to be
         satisfied upon the delivery to holders of Preference Units of Operating
         Partnership's Quarterly Report on Form 10-Q, within five (5) business
         days of its filing with the SEC); and

                  (iii)    on a quarterly basis (as soon as possible, but in no
         event later than sixty (60) days following the end of each fiscal
         quarter of Operating Partnership) a reasonable good faith written
         estimate (it being understood and agreed that such estimate shall be
         prepared as if it were being prepared solely for the use of Company and
         Operating Partnership and that such preparation shall not take into
         account any use by, or benefit of, the Contributors) together with
         reasonable supporting information of the percentage of Operating
         Partnership's assets (by value) that are within the relevant categories
         of Section 856(c)(4) of the Code.

                  (iv) on an annual basis (as soon as possible, but in no event
         later than ninety (90) days following the end of each fiscal year of
         Operating Partnership) a reasonable good faith written estimate (it
         being understood and agreed that such estimate shall be prepared as if
         it were being prepared solely for the use of Company and Operating
         Partnership and that such preparation shall not take into account any
         use by, or benefit of,

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         the Contributors) together with reasonable supporting information of
         the percentage of Operating Partnership's gross income that is derived
         from sources enumerated in Section 856(c)(2) and (3), respectively, of
         the Code.

         (g)      Provided that all other conditions to Operating Partnership's
and Company's obligations set forth in this Agreement have been satisfied or
properly waived, Operating Partnership covenants that it shall record
Contributors as the holders of the Preference Units on its books and records and
shall admit Contributors as limited partners to Operating Partnership on the
Closing Date.

         (h)      Operating Partnership shall not issue any Preference Units to
any Person other than Contributors and Company shall not issue any Preferred
Stock to any Person other than a holder of Preference Units upon exchange of
such Preference Units.

         (i)      Operating Partnership covenants and agrees for the benefit of
the holders of the Preference Units that, the income and assets of the Operating
Partnership will be such as would permit the Operating Partnership to satisfy
the income and assets requirements of Section 856 of the Code if the Operating
Partnership were a REIT.

         (j)      Upon request of any Contributor, from time to time (provided
that such request is not made more often than six times during any given
calendar year), Operating Partnership and Company agree to deliver a certificate
to such Contributor bringing down the representation and warranties made by
Operating Partnership and Company in PARAGRAPHS 8(D), 8(E), 8(F) and 8(G) to a
date requested by a Contributor to the extent, after due inquiry, Operating
Partnership and Company can make such representations and warranties as of such
date.

         (k)      The Company shall not undertake any action, including the
issuance of any securities, without the consent of the holders of the Preference
Units, if such action would require the consent of the holders of the Preferred
Stock if any shares of the Preferred Stock were outstanding at the time of such
action.

         (l)      The Company shall cause the Articles Supplementary to be filed
with the SMDAT and shall deliver within two (2) business days after Closing a
copy of the Articles Supplementary certified as filed with the SMDAT.

         The covenants set forth in this PARAGRAPH 4 shall survive the Closing.

         5.       TRANSACTION COSTS. Except as otherwise specifically set forth
herein, each of the parties hereto shall bear its own costs and expenses with
respect to the transaction contemplated hereby.

         6.       CLOSING.


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         (a)      The closing of the transactions contemplated by this Agreement
shall be consummated on September 29, 1999 (the "CLOSING").

         (b)      At the Closing, Operating Partnership and Company shall
deliver to Contributors the following documents and the following other items
(the documents and other items described in this PARAGRAPH 6(B) being
collectively referred to herein as the "OPERATING PARTNERSHIP CLOSING
DOCUMENTS"):

                  (i)      This Agreement duly executed and delivered by
         Operating Partnership and Company;

                  (ii)     The Amendment, duly executed and delivered by all
         persons necessary to make such amendment binding on and enforceable
         against all Partners in Operating Partnership;

                  (iii)    The Articles Supplementary of the Company, duly
         executed and delivered by the Company and in proper form for filing
         with the SMDAT.

                  (iv)     The Registration Rights Agreement, in the form set
         forth on EXHIBIT C, duly executed and delivered by Company;

                  (v)      A Certificate of the Secretary of Company
         substantially in the form set forth on EXHIBIT D together with
         completed exhibits attached thereto, executed by the secretary of the
         Company and dated as of the date of the Closing;

                  (vi)     An opinion of counsel to Company and Operating
         Partnership substantially in the form set forth on EXHIBIT E;

                  (vii)    Cross-Receipts, substantially in the form set forth
         on EXHIBITS F-1 and F-2; and

                  (viii)   Certificates representing the Preference Units for
         each Contributor;

                  (ix)     Written Consent of a majority of the Preferred OP
         Unit (as defined in the Agreement of Limited Partnership) holders
         (excluding the holders of the Preference Units) to the issuance of the
         Preference Units; and

                  (x)      Those other closing documents required to be executed
         by it or as may be otherwise necessary or appropriate to consummate the
         transaction contemplated hereby.

         (c)      At the Closing, Contributors shall deliver to Operating
Partnership and Company the following documents and the following other items
(the documents and other items described in this PARAGRAPH 6(C) being
collectively referred to herein as the "CONTRIBUTORS' CLOSING


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DOCUMENTS"):

                  (i)      Counterparts of those documents listed in PARAGRAPH
         6(B)(I), (II), (IV), and (VII), duly executed and delivered by
         Contributors.

                  (ii)     Those other closing documents required to be executed
         by it or as may be otherwise necessary or appropriate to consummate the
         transaction contemplated hereby.

         7.       REPRESENTATIONS AND WARRANTIES OF CONTRIBUTORS. Contributors
make the following representations and warranties to Operating Partnership and
Company, all of which (except as otherwise designated) are true and correct in
all material respects on the Agreement Date and shall be true and correct in all
material respects as of the date of the Closing:

                  (a)      Contributors are duly organized and validly existing
         under the laws of the state of their organization and have been duly
         authorized by all necessary and appropriate action to enter into this
         Agreement and to consummate the transactions contemplated hereby. This
         Agreement is a valid and binding obligation of Contributors,
         enforceable against Contributors in accordance with its terms, except
         insofar as enforceability may be affected by bankruptcy, insolvency or
         similar laws affecting creditor's rights generally and the availability
         of any particular equitable remedy.

                  (b)      Neither the execution nor the delivery of this
         Agreement nor the consummation of the transactions contemplated hereby
         nor fulfillment of or compliance with the terms and conditions hereof
         (a) conflict with or will result in a breach of any of the terms,
         conditions or provisions of (i) the Governing Documents of Contributors
         or (ii) any agreement, order, judgment, decree, arbitration award,
         statute, regulation or instrument to which either Contributor is a
         party or by which it or its assets are bound, or (b) constitutes or
         will constitute a breach, violation or default under any of the
         foregoing. No consent or approval, authorization, order, regulation or
         qualification of any governmental entity or any other Person is
         required for the execution and delivery of this Agreement and the
         consummation of the transactions contemplated hereby by Contributors.

                  (c)      Contributors acknowledge that the Preference
         Units have not been and will not be registered or qualified under the
         Securities Act or any state securities laws and are offered in reliance
         upon an exemption from registration under Regulation D of the
         Securities Act and similar state law exceptions. The Preference Units
         to be received by Contributors hereunder shall be held by Contributors
         for investment purposes only for their own account, and not with a view
         to or for sale in connection with any distribution of the Preference
         Units, and Contributors acknowledge that the Preference Units cannot be
         sold or otherwise disposed of by the holders thereof unless they are
         subsequently registered under the Securities Act or pursuant to an
         exemption therefrom; and the Preference Units may not be sold, assigned
         or otherwise transferred except in compliance


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         with the Agreement of Limited Partnership. Contributors hereby
         acknowledge receipt of a copy of the Agreement of Limited Partnership,
         as amended through the date hereof, and represent that they have
         reviewed same and understand the provisions thereof which have a
         bearing on the representations made in this PARAGRAPH 7(C).

                  (d)      Contributors have no contract, understanding,
         agreement or arrangement with any Person to sell, transfer or grant a
         participation to such Person or any other Person, with respect to any
         or all of the Preference Units they will receive in accordance with the
         provisions hereof.

                  (e)      Each Contributor is an "accredited investor" within
         the meaning of Regulation D under the Securities Act and has knowledge
         and experience in financial and business matters such that it is
         capable of evaluating the merits and risks of receiving and owning the
         Preference Units and Contributors are able to bear the economic risk of
         such ownership and understands that an investment in Preference Units
         involves substantial risks.

                  (f)      Neither Contributor is an employee benefit plan
         subject to ERISA or Section 4975 of the Code.

                  (g)      In making this investment, Contributors are relying
         upon the advice of their own personal, legal and tax advisors with
         respect to the tax and other aspects of an investment in Operating
         Partnership.

                  (h)      There is no action, suit, proceeding or, to
         Contributors' knowledge, currently threatened against Contributors that
         questions the validity of this Agreement or the right of Contributors
         to enter into this Agreement or to consummate the transactions
         contemplated hereby.

                  (i)      For such time as a Contributor holds an interest in
         the Operating Partnership, such Contributor will be treated for federal
         income tax purposes as either a real estate investment trust or a C
         corporation (and not as an S corporation or a division of another
         corporation, unless such other corporation complies with this covenant
         and agreement).

                           (j) There has been made available to Contributors and
         their respective advisors the opportunity to ask questions of, and
         receive answers from, the Operating Partnership and the Company
         concerning the terms and conditions of the investment in the Preference
         Units and any other matters pertaining to the Operating Partnership
         and/or the Company. Contributors have had an opportunity to consult
         with counsel and other advisors about the investment in the Preference
         Units and all material documents, records and books pertaining to such
         investment have, upon request, been made available to Contributors and
         their respective advisors.


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                  Contributors hereby expressly permit JAFFE, RAITT, HEUER &
         WEISS, P.C., as counsel to the Operating Partnership and the Company,
         to rely upon the representations and warranties set forth above as if
         such representations and warranties were made by Contributors directly
         to JAFFE, RAITT, HEUER & WEISS, P.C.

         8.       REPRESENTATIONS AND WARRANTIES OF OPERATING PARTNERSHIP AND
COMPANY. Operating Partnership and Company make the following representations
and warranties to Contributors and Manager, all of which (except as otherwise
designated) are true and correct in all material respects on the Agreement Date
and shall be true and correct in all material respects as of the date of the
Closing:

                  (a)      Operating Partnership is duly organized and validly
         existing under the laws of the state of its organization and is duly
         registered and qualified to do business in each jurisdiction where such
         registration or qualification is material to the transactions
         contemplated hereby and has been duly authorized by all necessary and
         appropriate action to enter into this Agreement, to issue, sell and
         deliver the Preference Units and to consummate the transactions
         contemplated hereby, and the individuals executing this Agreement on
         behalf of Operating Partnership have been duly authorized by all
         necessary and appropriate action on behalf of Operating Partnership.
         This Agreement is a valid and binding obligation of Operating
         Partnership, enforceable against Operating Partnership in accordance
         with its terms, except insofar as enforceability may be affected by
         bankruptcy, insolvency or similar laws affecting creditor's rights
         generally and the availability of any particular equitable remedy.

                  (b)      Company is duly organized and validly existing
         under the laws of the state of its organization and is duly registered
         and qualified to do business in each jurisdiction where such
         registration or qualification is material to the transactions
         contemplated hereby and has been duly authorized by all necessary and
         appropriate action to enter into this Agreement, to issue and deliver,
         upon exchange of the Preference Units in accordance with the Agreement
         of Limited Partnership, the Preferred Stock and to consummate the
         transactions contemplated hereby, and the individuals executing this
         Agreement on behalf of Company have been duly authorized by all
         necessary and appropriate action on behalf of Company. This Agreement
         is a valid and binding obligation of Company, enforceable against
         Company in accordance with its terms, except insofar as enforceability
         may be affected by bankruptcy, insolvency or similar laws affecting
         creditor's rights generally and the availability of any particular
         equitable remedy.

                  (c) Neither the execution nor the delivery of this Agreement
         nor the consummation of the transactions contemplated hereby nor
         fulfillment of or compliance with the terms and conditions hereof (a)
         conflict with or will result in a breach of any of the terms,
         conditions or provisions of (i) the Governing Documents of Company or


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         Operating Partnership or any of its general partners or (ii) any
         agreement, order, judgment, decree, arbitration award, statute,
         regulation or instrument to which Company or Operating Partnership is a
         party or by which it or its assets are bound, or (b) constitutes or
         will constitute a breach, violation or default under any of the
         foregoing. No consent or approval, authorization, order, registration
         or qualification of any governmental entity or any other Person is
         required for the execution and delivery of this Agreement and the
         consummation of the transactions contemplated hereby by Operating
         Partnership or Company, except for filings under state securities law
         or "blue sky" laws (provided such would not have a material adverse
         affect on the Company or the transaction contemplated by this
         Agreement).

                  (d)      Immediately following the issuance of the Preference
         Units pursuant to this Agreement, less than 8% of the value of
         Operating Partnership's assets will consist of "stock and securities"
         within the meaning of Section 351(e)(1) of the Code and Operating
         Partnership has no plan to increase the amount of its assets
         constituting "stock and securities" to a percentage equal to or greater
         than 10% (except for short-term cash equivalents and other short-term
         assets arising from the temporary investment of stock or debt issuance
         proceeds).

                  (e)      Operating Partnership has not been and is not
         currently a PTP.

                  (f)      Neither the Company nor any Subsidiary of Company has
         any present plan or intention, and neither the Company nor any
         Subsidiary of Company has any actual knowledge of any present plan or
         intention of any partner in Operating Partnership, to take any action
         or actions that would or would likely result in Operating Partnership
         becoming a PTP in the foreseeable future. Neither Company nor any
         Subsidiary of Company has actual knowledge of facts that reasonably
         would cause it to expect that Operating Partnership would or would
         likely become a PTP in the foreseeable future.

                  (g)      The Company has properly elected to be taxable as a
         real estate investment trust (a "REIT") under and in accordance with
         Sections 856 to 860 of the Code, currently qualifies for taxation as a
         REIT and has no plan or intention or knowledge of facts that would
         likely cause it to fail to qualify for taxation as a REIT in the
         foreseeable future.

                  (h)      The Preferred Stock issuable upon exchange of the
         Preference Units in accordance with the Agreement of Limited
         Partnership have been duly and validly reserved for issuance, and upon
         issuance in accordance with this Agreement, the Agreement of Limited
         Partnership and the Charter, shall be duly and validly issued, fully
         paid and non-assessable. The Preference Units have been duly authorized
         and upon contribution of the Contribution Amount to the Operating
         Partnership will be validly issued, fully paid and non-assessable.

                  (i)      Neither the issuance, sale or delivery of the
         Preference Units nor, upon


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         exchange, the issuance and delivery of the Preferred Stock, is subject
         to any preemptive right of any Partner of Operating Partnership arising
         under law or the Agreement of Limited Partnership or any stockholder of
         the Company arising under applicable law or the Charter or Bylaws, or
         to any contractual right of first refusal or other right in favor of
         any Person. With the exception of the Charter and the Agreement of
         Limited Partnership, there are no agreements or understandings in
         effect restricting the voting rights, the distribution rights (except
         with respect to the Financing Agreements) or any other rights of the
         holders of the Preference Units, or upon exchange, the Preferred Stock.

                  (j)      There is no action, suit, proceeding or investigation
         pending or, to the knowledge of the Company or the Operating
         Partnership, currently threatened against Operating Partnership or
         Company that questions the validity of this Agreement or the right of
         Operating Partnership or Company to enter into this Agreement, and to
         consummate the transactions contemplated hereby, or that would
         reasonably be expected to, either individually or in the aggregate,
         have a material adverse affect on the business, capitalization,
         operations, properties or condition (financially or otherwise) of
         Operating Partnership or Company, or result in any change in the
         current equity ownership of Operating Partnership or Company, nor is
         Company or Operating Partnership aware that there is any basis for the
         foregoing.

                  (k)      Neither Operating Partnership nor Company is in
         conflict with, or in default or violation of (i) any law, rule,
         regulation, order, judgment or decree applicable to it or by which any
         of its properties or assets is bound or affected, or (ii) any note,
         bond, mortgage, indenture or obligation to which it is a party or by
         which Operating Partnership or Company or any property or asset of
         Company or Operating Partnership is bound or affected, except for any
         such conflicts, defaults or violations that would not reasonably be
         expected to, individually or in the aggregate, have a material adverse
         effect on the business, operations, properties or condition
         (financially or otherwise) of Operating Partnership or Company.

                  (l)       Partnership and Company hereby consent to
         any pledge and release of such pledge of the Preference Units subject
         to and in accordance with the Agreement of Limited Partnership, and to
         any pledge and release of such pledge of any Preferred Stock into which
         such Preference Units are exchanged, to secure the obligations of
         Contributors.

                  (m)      Operating Partnership has no plan or present
         intention of merging, consolidating, or selling or leasing all of its
         assets as an entirety, where the resulting, surviving or transferee
         entity is a corporation or otherwise not a pass-through entity.

         Operating Partnership and Company hereby expressly permit Shearman &
Sterling, as counsel to Contributors and Manager, to rely upon the
representations and warranties set forth in this PARAGRAPH 8 as if such
representations and warranties were made by Operating Partnership

                                       14

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and Company directly to Shearman & Sterling.

         9.       SURVIVAL OF REPRESENTATIONS AND WARRANTIES. The
representations and warranties set forth in PARAGRAPHS 7 and 8 shall survive the
Closing.

         10.      BROKERS. Each party represents and warrants to the other that
it has dealt with no broker, finder or other person (collectively, "BROKER")
with respect to this Agreement or the transactions contemplated hereby and that
no Broker is entitled to a commission as a result of this transaction, except
for Donaldson, Lufkin & Jenrette Securities Corporation. Operating Partnership
is responsible for the commission to Donaldson, Lufkin & Jenrette Securities
Corporation pursuant to a separate agreement. Each of (a) Operating Partnership
and Company, severally and not jointly, on the one hand, and (b) Contributors on
the other hand, agree to indemnify and hold harmless the other party against any
loss, liability, damage, expense or claim incurred by reason of any brokerage
commission or finder's fee alleged to be payable because of any act, omission or
statement of the indemnifying party. Such indemnity obligation shall be deemed
to include the payment of reasonable attorney's fees and court costs incurred in
defending any such claim. The provisions of this PARAGRAPH 10 shall survive the
Closing.

         11.      COMPLETE AGREEMENT. This Agreement represents the entire
agreement between Contributors, Operating Partnership and Company covering
everything agreed upon or understood in this transaction and all other prior
agreements, written or oral, including any prior subscription agreements or
letters, are merged into this Agreement. There are no oral promises, conditions,
representations, understandings, interpretations or terms of any kind as
conditions or inducements to the execution hereof in effect between the parties.
No change or addition shall be made to this Agreement except by a written
agreement executed by Contributors, Operating Partnership and Company.

         12.      AUTHORIZED SIGNATORIES. The persons executing this Agreement
for and on behalf of Contributors, Operating Partnership and Company each
represent that they have the requisite authority to bind the entities on whose
behalf they are signing.

         13.      PARTIAL INVALIDITY. If any term, covenant or condition of this
Agreement is held to be invalid or unenforceable in any respect, such invalidity
or unenforceability shall not affect any other provision hereof, and this
Agreement shall be construed as if such invalid or unenforceable provision had
never been contained herein.

         14.      MISCELLANEOUS.

                  (a)      Governing Law. This Agreement shall be interpreted
         and enforced according to the laws of the State of Michigan.

                  (b)      Headings; Sections. All headings in this Agreement
         are inserted for convenience only and do not form part of this
         Agreement or limit, expand or otherwise


                                       15

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         alter the meaning of any provisions hereof.

                  (c)      Counterparts. This Agreement may be executed in any
         number of counterparts, each of which shall be deemed to be an original
         and all of which shall constitute one and the same agreement. Facsimile
         signatures shall be deemed effective execution of this Agreement and
         may be relied upon as such by the other party. In the event facsimile
         signatures are delivered, originals of such signatures shall be
         delivered to the other party within three (3) business days after
         execution.

                  (d)      No Benefit For Third Parties. The provisions of this
         Agreement are intended to be for the sole benefit of the parties hereto
         and their respective successors and permitted assigns, and none of the
         provisions of this Agreement are intended to be, nor shall they be
         construed to be, for the benefit of any third party.

                  (e)      Rights and Obligations. The rights and obligations of
         Contributors, Operating Partnership and Company shall inure to the
         benefit of and be binding upon the parties hereto and their respective
         successors and permitted assigns.

                  (f)      Limitation of Liability. The liability of
         Contributors hereunder shall be limited to the Contribution Amount.

         15.      NOTICES. All notices and other communications required or
permitted to be given hereunder shall be in writing and shall be deemed to have
been duly given if personally delivered, delivered by nationally recognized
overnight courier with proof of delivery thereof, sent by United States
registered or certified mail (postage prepaid, return receipt requested)
addressed as hereinafter provided or via telephonic facsimile transmission with
proof of delivery in the form of a facsimile transmission confirmation report.
Notice shall be sent and deemed given when (a) if personally delivered or via
nationally recognized overnight courier, then upon receipt by the receiving
party, or (b) if mailed, then three (3) days after being postmarked, or (c) if
sent via telephonic facsimile transmission, then at the time set forth in the
facsimile transmission confirmation report.

         Any party listed below may change its address hereunder by notice to
the other party listed below. Until further notice, notice and other
communications hereunder shall be addressed to the parties listed below as
follows:

                  If to Contributors:         Belcrest Realty Corporation and
                                              Belair Real Estate Corporation
                                              c/o Eaton Vance Management
                                              The Eaton Vance Building
                                              255 State Street
                                              Boston, Massachusetts  02109
                                              Attention: Mr. Alan Dynner

                                       16

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                                              Fax: (617) 338-8054

                  If to Operating
                  Partnership                 Sun Communities Operating Limited
                  or Company:                 Partnership
                                              Suite 145
                                              31700 Middlebelt Road
                                              Farmington Hills, Michigan 48334
                                              Attention: Mr. Jeffrey P. Jorissen
                                              Fax: (248) 932-3072

         16.      PRESS RELEASES. Contributors, Operating Partnership and
Company each agrees that it will not issue any press release, advertisement or
other public communication with respect to this Agreement or transaction
contemplated therein without the prior consent of the other party hereto, except
to the extent such communication is required by applicable law or the rules of
the New York Stock Exchange; provided, however, that in such event, such party
shall deliver a copy of such proposed press release to the other party prior to
the publication thereof and shall grant the other party an opportunity to review
the same and shall make reasonable revisions to such proposed press release
requested by the other party.







                            (SIGNATURES ON NEXT PAGE)




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         IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed as of the day first written above.


                                    CONTRIBUTORS:

                                    BELCREST REALTY CORPORATION


                                    By: /s/ William R Cross
                                       ------------------------------
                                        Name: William R Cross
                                        Title: Vice President


                                    BELAIR REAL ESTATE CORPORATION


                                    By: /s/ William R Cross
                                       ------------------------------
                                        Name: William R Cross
                                        Title: Vice President






                       (SIGNATURES CONTINUE ON NEXT PAGE)






   20



                                    OPERATING PARTNERSHIP:

                                    SUN COMMUNITIES OPERATING LIMITED
                                    PARTNERSHIP

                                    By:   Sun Communities, Inc., its
                                          general partner


                                    By: /s/ Jeffrey P. Jorissen
                                       ------------------------------
                                        Name: Jeffrey P. Jorissen
                                        Title: Chief Financial Officer


                                    COMPANY:

                                    SUN COMMUNITIES, INC.



                                    By: /s/ Jeffrey P. Jorissen
                                       ------------------------------
                                       Name: Jeffrey P. Jorissen
                                       Title: Chief Financial Officer