EXHIBIT 10.2


                     MASTER AGREEMENT OF GUARANTY AND SURETYSHIP

     This Master Agreement of Guaranty and Suretyship (the "Guarantee") is 
made and entered into this 13th day of March, 1997, by and between  the 
undersigned corporations, with their respective principal offices as set 
forth on Schedule 1.1(b) of the Credit Agreement, or as otherwise notified 
from time to time pursuant to the Credit Agreement (collectively the 
"Guarantors" and individually a "Guarantor"), in favor of PNC Bank, National 
Association, a national banking association (the "Bank").

                                  BACKGROUND

    In order to induce the Bank to make and continue to make Loans to Grubb & 
Ellis Company, a Delaware corporation (the "Borrower"), in accordance with 
that certain Credit Agreement dated March 13, 1997 (as it may hereafter from 
time to time be amended, restated, modified or supplemented, the "Credit 
Agreement") by and between the Borrower, the Guarantors and the Bank, each of 
the undersigned Guarantors hereby unconditionally and irrevocably guarantees 
and becomes surety as though it was a primary obligor for the full and timely 
payment when due, whether at maturity, by declaration, acceleration or 
otherwise, of the principal of and interest and fees on the Loans (as defined 
in the Credit Agreement), of the Bank to the Borrower under the Credit 
Agreement and the Note issued by the Borrower in connection therewith and any 
extensions or renewals thereof, and each and every other obligation or 
liability (both those now in existence and those that shall hereafter arise 
and including, without limitation, all costs and expenses of enforcement and 
collection after the occurrence and during the continuance of an Event of 
Default, including reasonable attorney's fees) of the Borrower to the Bank 
under the Credit Agreement and the other Loan Documents (as defined in the 
Credit Agreement) except this Guarantee, and any extensions or renewals 
thereof (hereinafter referred to as the "Guaranteed Indebtedness"), whether 
or not such Guaranteed Indebtedness or any portion thereof shall hereafter be 
released or discharged or is for any reason invalid or unenforceable.

     1.  Capitalized terms used herein and not otherwise defined herein shall 
have such meanings given to them in the Credit Agreement.

     2.  Each Guarantor agrees to make such full payment forthwith upon 
demand of the Bank when the Guaranteed Indebtedness or any portion thereof is 
due to be paid by the Borrower to the Bank, whether at stated maturity, by 
declaration, acceleration or otherwise.  Each Guarantor agrees to make such 
full payment irrespective of whether or not any one or more of the following 
events has occurred:  (i) the Bank has made any demand on the Borrower or any 
other guarantor; (ii) the Bank has taken any action of any nature against the 
Borrower or any other guarantor; (iii) the Bank has pursued any rights which 
it has against any other Person who may be liable for the Guaranteed 
Indebtedness; (iv) the Bank holds or has resorted to any security for the 
Guaranteed Indebtedness; or (v) the Bank has invoked any other remedy or 
right it has available with respect to the Guaranteed Indebtedness.  Each 
Guarantor further agrees to 




make full payment to the Bank even if circumstances exist which otherwise 
constitute a legal or equitable discharge of the Guarantor as surety or 
guarantor.

     3.  Each Guarantor warrants to the Bank that:  (i) no other agreement 
(other than the Credit Agreement and the Loan Documents), representation or 
special condition exists between the Guarantor and the Bank regarding the 
liability of such Guarantor hereunder, nor does any understanding exist 
between such Guarantor and the Bank that the obligations of the Guarantor 
hereunder are or will be other than as set forth herein; and (ii) as of the 
date hereof, such Guarantor has no defense whatsoever to any action or 
proceeding that may be brought to enforce this Guarantee.

     4.  Until indefeasible payment in full of the Loans and termination of 
all Letters of Credit and the Commitment, each Guarantor waives and agrees 
not to enforce any of the rights of the Guarantor against the Borrower or any 
other guarantor which arise as a result of this Guarantee, including, but not 
limited to:  (i) any right of the Guarantor to be subrogated in whole or in 
part to any right or claim with respect to any Guaranteed Indebtedness or any 
portion thereof to the Bank which might otherwise arise from payment by the 
Guarantor to the Bank on the account of the Guaranteed Indebtedness or any 
portion thereof until all the Guaranteed Indebtedness is indefeasibly paid in 
full; and (ii) any right of the Guarantor to require the marshalling of 
assets of the Borrower or any other guarantor which might otherwise arise 
from payment by the Guarantor to the Bank on account of the Guaranteed 
Indebtedness or any portion thereof.  If any amount shall be paid to any 
Guarantor in violation of the preceding sentence, such amount shall be deemed 
to have been paid to the Guarantor for the benefit of, and held in trust for 
the benefit of, the Bank and shall forthwith be paid to the Bank to be 
credited and applied upon the Guaranteed Indebtedness, whether matured or 
unmatured, in accordance with the terms of the Credit Agreement.  Each 
Guarantor acknowledges that it will receive direct and indirect benefits from 
the financing arrangements contemplated by the Credit Agreement and that the 
waivers set forth in this Section are knowingly made in contemplation of such 
benefits.

     5.  Each Guarantor waives promptness and diligence by the Bank with 
respect to his rights under the Credit Agreement or any of the other Loan 
Documents, including, but not limited to, this Guarantee.

     6.  Each Guarantor waives any and all notice with respect to:  (i) 
acceptance by the Bank of this Guarantee; (ii) the provisions of any note, 
instrument or agreement relating to the Guaranteed Indebtedness; and (iii) 
any default in connection with the Guaranteed Indebtedness.

     7.  Each Guarantor waives any presentment, demand, notice of dishonor or 
nonpayment, protest, and notice of protest in connection with the Guaranteed 
Indebtedness.

     8.  Each Guarantor agrees that the Bank may from time to time and as 
many times as the Bank, in its sole discretion, deems appropriate, do any of 
the following without notice to such Guarantor and without adversely 
affecting the validity or enforceability of this Guarantee: (i) release, 
surrender, exchange, compromise, or settle the Guaranteed Indebtedness or any 
portion thereof; (ii) change, renew, or waive the terms of the Guaranteed 
Indebtedness or any portion thereof; (iii) change, renew, or waive the terms, 
including without limitation, the rate of 



interest charged to the Borrower or the Guarantor, of any note, instrument, 
or agreement relating to the Guaranteed Indebtedness or any portion thereof; 
(iv) grant any extension or indulgence with respect to the payment to the 
Bank of the Guaranteed Indebtedness or any portion thereof; (v) enter into 
any agreement of forbearance with respect to the Guaranteed Indebtedness or 
any portion thereof; (vi) release, surrender, exchange or compromise any 
security held by the Bank for the Guaranteed Indebtedness; (vii) release any 
Person who is a guarantor or surety or who has agreed to purchase the 
Guaranteed Indebtedness or any portion thereof; and (viii) release, 
surrender, exchange or compromise any security or Lien held by the Bank for 
the liabilities of any Person who is a guarantor or surety for the Guaranteed 
Indebtedness or any portion thereof.  Each Guarantor agrees that the Bank may 
do any of the above as it deems necessary or advisable, in its sole 
discretion, without giving any notice to the Guarantor, and that the 
Guarantor will remain liable for full payment to the Bank of the Guaranteed 
Indebtedness.

     9.  If any amount owing hereunder shall have become due and payable (by 
acceleration or otherwise) and an Event of Default has occcured and is 
continuing, the Bank and any branch, subsidiary or affiliate of the Bank 
anywhere in the world shall each have the right, at any time and from time to 
time to the fullest extent permitted by Law, in addition to all other rights 
and remedies available to it, without prior notice to any Guarantor, to 
set-off against and to appropriate and apply to such due and payable amounts 
any debt owing to, and any other funds held in any manner for the account of 
the Guarantor by the Bank or any such branch, subsidiary or affiliate 
including, without limitation, all funds in all deposit accounts (whether 
time or demand, general or special, provisionally credited or finally 
credited, or otherwise) now or hereafter maintained by the Guarantor with the 
Bank or such branch, subsidiary or affiliate.  Such right shall exist whether 
or not the Bank shall have given notice or made any demand hereunder or under 
any of the Note or any other Loan Document, whether or not such debt owing to 
or funds held for the account of any Guarantor is or are matured or 
unmatured, and regardless of the existence or adequacy of any collateral, 
guarantee or any other security, right or remedy available to the Bank.  Each 
Guarantor hereby consents to and confirms the foregoing arrangements, and 
confirms the Bank's rights and each such branch's, subsidiary's and 
affiliate's rights of banker's lien and set-off. 

     10.  Each Guarantor recognizes and agrees that the Borrower, after the 
date hereof, may incur additional Indebtedness or other obligations, fees and 
expenses to the Bank under the Credit Agreement or pay existing Guaranteed 
Indebtedness, and that in any such transaction, even if such transaction is 
not now contemplated, the Bank will rely in any such case upon this Guarantee 
and the enforceability thereof against the Guarantor and that this Guarantee 
shall remain in full force and effect with respect to such Indebtedness of 
the Borrower to the Bank and such Indebtedness shall for all purposes 
constitute Guaranteed Indebtedness.

     11.  Each Guarantor further agrees that, if at any time all or any part 
of any payment, from whomever received, theretofore applied by the Bank to 
any of the Guaranteed Indebtedness is or must be rescinded or returned by the 
Bank for any reason whatsoever including, without limitation, the insolvency, 
bankruptcy or reorganization of the Guarantor, such liability shall, for the 
purposes of this Guarantee, to the extent that such payment is or must be 
rescinded or returned, be deemed to have continued in existence, 
notwithstanding such application by the 




Bank, and this Guarantee shall continue to be effective or be reinstated, as 
the case may be, as to such liabilities, all as though such application by 
the Bank had not been made.

     12.  Each Guarantor agrees that no failure or delay on the part of the 
Bank to exercise any of its rights, powers or privileges under this Guarantee 
shall be a waiver of such rights, powers or privileges or a waiver of any 
default, nor shall any single or partial exercise of any of the Bank's 
rights, powers or privileges preclude other or further exercise thereof or 
the exercise of any other right, power or privilege or be construed as a 
waiver of any default. Each Guarantor further agrees that no waiver or 
modification of any rights of the Bank under this Guarantee shall be 
effective unless in writing and signed by the Bank.  Each Guarantor further 
agrees that each written waiver shall extend only to the specific instance 
actually recited in such written waiver and shall not impair the rights of 
the Bank in any other respect.

     13.  Each Guarantor unconditionally agrees to pay all reasonable costs and
expenses, including reasonable attorney's fees, incurred after the occurrence of
and during the continuance of an Event of Default by the Bank in enforcing this
Guarantee against such Guarantor.

     14. Each Guarantor agrees that this Guarantee and the rights and 
obligations of the parties hereto shall for all purposes be governed by 
and construed and enforced in accordance with the substantive law of the 
Commonwealth of Pennsylvania without giving effect to its principles of 
conflict of laws.

     15. Each Guarantor recognizes that this Guarantee when executed 
constitutes a sealed instrument and as a result the instrument will be 
enforceable as such without regard to any statute of limitations which might 
otherwise be applicable and without any consideration.

     16. Each Guarantor acknowledges that in addition to binding itself to 
this Guarantee, at the time of execution of this Guarantee the Bank offered 
to the Guarantor a copy of this Guarantee in the form in which it was 
executed and that by acknowledging this fact the Guarantor may not later be 
able to claim that a copy of the Guarantee was not received by it.

     17. Each Guarantor agrees that this Guarantee shall be binding upon each 
Guarantor, its successors and assigns; PROVIDED, HOWEVER, that the Guarantor 
may not assign or transfer any of its rights and obligations hereunder or any 
interest herein.  Each Guarantor further agrees that (i) this Guarantee is 
freely assignable and transferable by the Bank in connection with any 
assignment or transfer of the Guaranteed Indebtedness in accordance with the 
Credit Agreement and (ii) this Guarantee shall inure to the benefit of the 
Bank, its successors and assigns.  Upon indefeasible payment in full of the 
Guaranteed Indebtedness, this Guarantee shall terminate and be of no further 
effect and the Bank shall execute any documents, instruments, agreements or 
any combination thereof as the Guarantors shall reasonably request to 
evidence such termination.

     18. Each Guarantor agrees that if such Guarantor fails to perform any 
covenant or agreement hereunder or if there occurs an Event of Default under 
the Credit Agreement, all or any part of the Guaranteed Indebtedness may be 
declared to be forthwith due and payable and, in the case of an Event of 
Default described in Sections 9.1.14 or 9.1.15 of the Credit Agreement, 



the Guaranteed Indebtedness shall be immediately due and payable, in any case 
without presentment, demand, protest or notice of any kind, all of which are 
hereby expressly waived.

     19.  Each Guarantor agrees that the enumeration of the Bank's rights and 
remedies set forth in this Guarantee is not intended to be exhaustive and the 
exercise by the Bank of any right or remedy shall not preclude the exercise 
of any other rights or remedies, all of which shall be cumulative and shall 
be in addition to any other right or remedy given hereunder or under any 
other agreement among the parties to the Loan Documents or which may now or 
hereafter exist at law or in equity or by suit or otherwise.

     20. Each Guarantor agrees that all notices, statements, requests, 
demands and other communications under this Guarantee shall be given to the 
Guarantor at the address set forth in Schedule 1.1(B) to the Credit Agreement 
in the manner provided in Section 11.6 of the Credit Agreement.

     21. Each Guarantor agrees that the provisions of this Guarantee are 
severable, and in an action or proceeding involving any state or federal 
bankruptcy, insolvency or other law affecting the rights of creditors 
generally:

         (a)  if any clause or provision shall be held invalid or unenforceable 
         in whole or in part in any jurisdiction, then such invalidity or 
         unenforceability shall affect only such clause or provision, or part 
         thereof, in such jurisdiction and shall not in any manner affect such 
         clause or provision in any other jurisdiction, or any other clause or 
         provision in this Guarantee in any jurisdiction.

         (b)  if this Guarantee would be held or determined to be void, invalid 
         or unenforceable on account of the amount of the Guarantor's aggregate
         liability under this Guarantee, then, notwithstanding any other 
         provision of this Guarantee to the contrary, the aggregate amount of 
         such liability shall, without any further action by the Bank, the 
         Guarantor or any other Person, be automatically limited and reduced to
         the highest amount which is valid and enforceable as determined in 
         such action or proceeding, which (without limiting the generality of 
         the foregoing) may be an amount which is not greater than the greater 
         of:

               (A) the fair consideration actually received by the Guarantor 
under the terms of and as a result of the Loan Documents, including, without 
limiting the generality of the foregoing, and to the extent not inconsistent 
with applicable federal and state laws affecting the enforceability of 
guarantees, distributions or advances made to the Guarantor with the proceeds 
of any credit extended under the Loan Documents in exchange for its guaranty 
of the Guaranteed Indebtedness, or

               (B) ninety-five percent (95%) of the excess of (1) the amount 
of the fair saleable value of the assets of the Guarantor as of the date of 
this Guarantee as determined in accordance with applicable federal and state 
laws governing determinations of the insolvency of debtors as in effect on 
the date thereof over (2) the amount of all liabilities of the 



Guarantor as of the date of this Guarantee, also as determined on the basis 
of applicable federal and state laws governing the insolvency of debtors as 
in effect on the date thereof.

     22.  EACH GUARANTOR HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY 
APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY WITH RESPECT TO ANY 
LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH 
THIS GUARANTEE.  EACH GUARANTOR (i) ACKNOWLEDGES THAT IT HAS BEEN REPRESENTED 
BY COUNSEL IN CONNECTION WITH THE EXECUTION AND DELIVERY OF THIS GUARANTEE 
(ii) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF THE BANK HAS 
REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH PARTY WOULD NOT, IN THE EVENT 
OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, AND EXECUTION AND 
DELIVERY HEREOF BY THE GUARANTOR, AND (iii) ACKNOWLEDGES THAT THE ENTERING 
INTO OF THE CREDIT AGREEMENT BY THE BANK HAS BEEN INDUCED BY, AMONG OTHER 
THINGS, THE WAIVERS AND CERTIFICATIONS SET FORTH IN THIS SECTION.

    Each Guarantor (i) hereby irrevocably submits to the nonexclusive 
jurisdiction of the Court of Common Pleas of Allegheny County, Commonwealth 
of Pennsylvania, or any successor to said court, and to the nonexclusive 
jurisdiction of the United States District Court for the Western District of 
Pennsylvania, or any successor to said court (hereinafter referred to as the 
"Pennsylvania Courts") for purposes of any suit, action or other proceeding 
which relates to this Guarantee or any other Loan Document, (ii) to the 
extent permitted by applicable Law, hereby waives and agrees not to assert by 
way of motion, as a defense or otherwise in any such suit, action or 
proceeding, any claim that he is not personally subject to the jurisdiction 
of the Pennsylvania Courts; that such suit, action or proceeding is brought 
in an inconvenient forum; that the venue of such suit, action or proceeding 
is improper; or that this Guarantee or any Loan Document may not be enforced 
in or by the Pennsylvania Courts, (iii) hereby agrees not to seek, and hereby 
waives, any collateral review by any other court, which may be called upon to 
enforce the judgment of any of the Pennsylvania Courts, of the merits of any 
such suit, action or proceeding or the jurisdiction of the Pennsylvania 
Courts, and (iv) waives personal service of any and all process upon it and 
consents that all such service of process may be made by certified or 
registered mail addressed as provided in Schedule 1.1(B) of the Credit 
Agreement and service so made shall be deemed to be completed upon actual 
receipt thereof.  Nothing herein shall limit the Bank's right to bring any 
suit,



action or other proceeding against any Guarantor or any of the Guarantor's
assets or to serve process on the Guarantor by any means authorized by Law.

                      [SIGNATURES BEGIN ON THE NEXT PAGE.]





       [SIGNATURE PAGE 1 OF 1 TO MASTER AGREEMENT OF GUARANTY AND SURETYSHIP]
                                          
     IN WITNESS WHEREOF, the Guarantors intending to be legally bound, have 
executed this Guarantee as of the date first above written with the intention 
that this Guarantee shall constitute a sealed instrument.
     
                                       EACH OF THE SUBSIDIARIES
                                       LISTED ON SCHEDULE I 
                                       ATTACHED HERETO
     

                                       By: /s/  Brian Parker
                                           ---------------------------------
                                           Brian Parker
                                           Senior Vice President and Chief
                                           Financial Officer of each of the
                                           Subsidiaries listed on Schedule I 
                                             attached hereto