PRIME GROUP REALTY TRUST
10-Q, 1998-08-14
REAL ESTATE INVESTMENT TRUSTS
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<PAGE>
                                  UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D. C. 20549

                                    FORM 10-Q

          (X) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (D) OF THE

                         SECURITIES EXCHANGE ACT OF 1934

                  For the quarterly period ended June 30, 1998

                                       or

          ( ) TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (D) OF THE

                         SECURITIES EXCHANGE ACT OF 1934

                         Commission File Number: 1-13589

                            PRIME GROUP REALTY TRUST

             (Exact name of registrant as specified in its charter)

                      MARYLAND                                    36-4173047
          (State or other jurisdiction of                      (I.R.S. Employer
           incorporation or organization)                    Identification No.)

77 WEST WACKER DRIVE, SUITE 3900, CHICAGO, ILLINOIS                 60601
      (Address of principal executive offices)                    (Zip Code)

                                 (312) 917-1300
              (Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes  x   No
                                       ---     ---

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest practicable date:

At August 14, 1998,  15,572,494 of the registrant's  Common Shares of Beneficial
Interest were outstanding.









                                      -1-
<PAGE>
                            PRIME GROUP REALTY TRUST

                                    FORM 10-Q

                                      INDEX

PART I:  FINANCIAL INFORMATION

Item 1:  Financial Statements (Unaudited)                                   Page
                                                                            ----
         Consolidated Balance Sheets of Prime Group Realty Trust
         as of June 30, 1998 and December 31, 1997....................         3

         Consolidated Statement of Income of Prime Group Realty
         Trust for the Three Months Ended June 30, 1998 and the
         Combined Statement of Operations of the Predecessor
         Properties (predecessor to Prime Group Realty Trust) for
         the Three Months Ended June 30, 1997.........................         4

         Consolidated Statement of Income of Prime Group Realty
         Trust for the Six Months Ended June 30, 1998 and the
         Combined Statement of Operations of the Predecessor
         Properties (predecessor to Prime Group Realty Trust) for
         the Six Months Ended June 30, 1997...........................         5

         Consolidated  Statement of Cash Flows of Prime Group
         Realty Trust for the Six Months Ended June 30, 1998 and
         the Combined Statement of Cash Flows of the Predecessor
         Properties (predecessor to Prime Group Realty Trust) for
         the Six Months Ended June 30, 1997...........................     6 - 7

         Notes to Consolidated and Combined Financial Statements
         of Prime Group Realty Trust and of the Predecessor
         Properties (predecessor to Prime Group Realty Trust).........    8 - 13

Item 2.  Management's Discussion and Analysis of Financial
         Condition and Results of Operations..........................   14 - 20

Item 3.  Quantitative and Qualitative Disclosures About Market
         Risk.........................................................        20

PART II: OTHER INFORMATION

Item 1.  Legal Proceedings............................................        21
Item 2.  Changes in Securities and Use of Proceeds....................        21
Item 3.  Defaults Upon Senior Securities..............................        21
Item 4.  Submission of Matters to a Vote of Security Holders..........        21
Item 5.  Other Information............................................        21
Item 6.  Exhibits and Reports on Form 8-K.............................        22

Signatures ...........................................................        23







                                      -2-
<PAGE>
<TABLE>
                          PART I. FINANCIAL INFORMATION
ITEM 1:  FINANCIAL STATEMENTS
                            PRIME GROUP REALTY TRUST
                           CONSOLIDATED BALANCE SHEETS
                       (000'S OMITTED, EXCEPT SHARE DATA)
                                   (UNAUDITED)
<CAPTION>
                                                      JUNE 30,     DECEMBER 31,
                                                       1998            1997
                                                   ------------    ------------
<S>                                                <C>             <C>
ASSETS
Real estate and equipment, at cost:
  Land........................................... $     157,913   $      92,440
  Building and improvements......................       688,485         496,839
                                                   ------------    ------------
                                                        846,398         589,279
  Accumulated depreciation.......................       (12,424)         (2,338)
                                                   ------------    ------------
                                                        833,974         586,941
Mortgage note receivable.........................        56,988          56,263
Cash and cash equivalents........................        13,167          11,969
Tenant receivables...............................         6,185           3,897
Restricted cash escrows..........................        10,484           3,175
Deferred rent receivable.........................        38,492          37,751
Deferred costs, net..............................        32,033          28,472
Due from affiliates..............................         6,352           5,258
Other ...........................................        25,053           7,742
                                                    ------------   ------------
Total assets.....................................  $   1,022,728  $     741,468
                                                    ============   ============

LIABILITIES AND SHAREHOLDERS' EQUITY
Mortgage notes payable...........................  $    378,501   $     249,610
Mortgage note payable - Affiliate................           ---           3,984
Bonds payable....................................        74,450          74,450
Accrued interest payable.........................         1,703           1,245
Accrued real estate taxes........................        25,420          17,915
Accounts payable and accrued expenses............        17,721          13,903
Liabilities for leases assumed...................         5,083           5,758
Dividends payable................................         6,597           2,505
Other ...........................................         5,712             822
                                                   ------------    ------------
Total liabilities................................       515,187         370,192
Minority interests:

  Operating Partnership..........................       148,121         147,207
  Other..........................................         1,000              --
Shareholders' equity:
  Preferred shares:
    Series B Cumulative Redeemable Preferred
      Shares, $.01 par value; 4,600,000
      shares authorized, 4,000,000 issued
      and outstanding ...........................            40             ---
    Series A Cumulative Convertible Preferred
      Shares, $.01 par value; 30,000,000
      shares authorized, 2,000,000 issued and
      outstanding................................            20              20
  Common shares, $.01 par value; 100,000,000
    shares authorized; 15,572,494 and
    12,980,000 shares issued and outstanding
    at June 30, 1998 and December 31, 1997,
    respectively.................................           156             130
  Additional paid-in capital.....................       365,756         225,632
  Distributions in excess of earnings............        (7,552)         (1,713)
                                                   ------------    ------------
Total shareholders' equity.......................       358,420         224,069
                                                   ------------    ------------
Total liabilities and shareholders' equity....... $   1,022,728   $     741,468
                                                   ============    ============
<FN>
          See notes to consolidated and combined financial statements.
</FN>
                                      -3-
</TABLE>
<PAGE>
<TABLE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

               CONSOLIDATED STATEMENT OF INCOME OF THE COMPANY AND
               COMBINED STATEMENT OF OPERATIONS OF THE PREDECESSOR
                     (000'S OMITTED, EXCEPT PER SHARE DATA)
                                   (UNAUDITED)
<CAPTION>
                                                        THREE MONTHS ENDED
                                                              JUNE 30
                                                   ----------------------------
                                                       1998            1997
                                                   ------------    ------------
                                                   PRIME GROUP      PREDECESSOR
                                                   REALTY TRUST     PROPERTIES
                                                   ------------    ------------
<S>                                                <C>              <C>
REVENUE
Rental........................................... $      23,391   $       8,145
Tenant reimbursements............................        10,026           3,563
Mortgage note interest...........................         1,507             ---
Other ...........................................         1,999             263
                                                   ------------    ------------

Total revenue....................................        36,923          11,971

EXPENSES

Property operations..............................         6,885           1,961
Real estate taxes................................         6,874           2,767
Depreciation and amortization....................         6,240           3,413
Interest.........................................         8,061           7,019
Interest - Affiliates............................           ---           2,719
Financing fees...................................           ---             272
Property and asset management fees - Affiliates..           ---             412
General and administrative.......................         1,648             907
Provision for environmental remediation costs....           ---           3,205
                                                   ------------    ------------

Total expenses...................................        29,708          22,675
                                                   ------------    ------------

Income (loss) before minority interest and
  extraordinary item.............................         7,215         (10,704)
Minority interest................................        (2,896)            109
                                                   ------------    ------------

Income (loss) before extraordinary item..........         4,319         (10,595)
Extraordinary loss on extinguishment of debt,
  net of minority nterest of $375................          (525)            ---
                                                   ------------    ------------

Net income (loss)................................         3,794   $     (10,595)
                                                                   ============

Net income allocated to preferred
  shareholders...................................        (1,341)
                                                   ------------

Net income available to common shareholders...... $       2,453
                                                   ============

Net income available per weighted-average
  common share of beneficial interest
  - Basic and diluted............................ $        0.16
                                                   ============

<FN>
          See notes to consolidated and combined financial statements.
</FN>
                                      -4-
</TABLE>
<PAGE>
<TABLE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

               CONSOLIDATED STATEMENT OF INCOME OF THE COMPANY AND
               COMBINED STATEMENT OF OPERATIONS OF THE PREDECESSOR
                     (000'S OMITTED, EXCEPT PER SHARE DATA)
                                   (UNAUDITED)
<CAPTION>
                                                          SIX MONTHS ENDED
                                                              JUNE 30
                                                   ----------------------------
                                                       1998            1997
                                                   ------------    ------------
                                                   PRIME GROUP      PREDECESSOR
                                                   REALTY TRUST     PROPERTIES
                                                   ------------    ------------
<S>                                                <C>              <C>
REVENUE
Rental........................................... $      41,476   $      16,131
Tenant reimbursements............................        18,401           7,769
Mortgage note interest...........................         3,014             ---
Other ...........................................         2,783             689
                                                   ------------    ------------

Total revenue....................................        65,674          24,589


EXPENSES

Property operations..............................        11,941           4,318
Real estate taxes................................        12,232           5,590
Depreciation and amortization....................        11,575           6,492
Interest.........................................        14,476          13,587
Interest - Affiliates............................           ---           5,649
Financing fees...................................           ---             640
Property and asset management fees - Affiliates..           ---             801
General and administrative.......................         3,044           1,886
Provision for environmental remediation costs....           ---           3,205
                                                   ------------    ------------

Total expenses...................................        53,268          42,168
                                                   ------------    ------------

Income (loss) before minority interest and
  extraordinary item.............................        12,406         (17,579)
Minority interest................................        (5,167)            368
                                                   ------------    ------------

Income (loss) before extraordinary item..........         7,239         (17,211)
Extraordinary loss on extinguishment of debt,
  net of minority interest of $375...............          (525)            ---
                                                   ------------    ------------

Net income (loss)................................         6,714   $     (17,211)
                                                                   ============

Net income allocated to preferred shareholders...        (2,041)
                                                   ------------

Net income available to common shareholders ..... $       4,673
                                                   ============

Net income available per  weighted-average
    common share of beneficial interest
    - Basic and diluted.......................... $        0.32
                                                   ============

<FN>
          See notes to consolidated and combined financial statements.
</FN>
                                      -5-
</TABLE>
<PAGE>
<TABLE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

             CONSOLIDATED STATEMENT OF CASH FLOWS OF THE COMPANY AND
               COMBINED STATEMENT OF CASH FLOWS OF THE PREDECESSOR
                                 (000'S OMITTED)
                                   (UNAUDITED)
<CAPTION>
                                                          SIX MONTHS ENDED
                                                              JUNE 30
                                                   ----------------------------
                                                       1998            1997
                                                   ------------    ------------
                                                   PRIME GROUP      PREDECESSOR
                                                   REALTY TRUST     PROPERTIES
                                                   ------------    ------------
<S>                                                <C>              <C>
OPERATING ACTIVITIES

Net income (loss)................................. $     6,714    $     (17,211)
Adjustments to reconcile net income (loss) to
 net cash provided by (used in) operating
 activities:
  Amortization of costs for leases assumed
    (included in rental revenue)..................          591             622
  Depreciation and amortization...................       11,575           6,492
  Interest added to principal on mortgage
    note payable - Affiliate......................          ---           5,642
  Standby loan fee-affiliate added  to principal
    on mortgage note payable - Affiliate..........          ---             262
  Minority interest...............................        5,167            (368)
  Extraordinary item, net.........................          525             ---
  Changes in operating assets and liabilities:
    Increase in tenant receivables................       (2,288)           (154)
    (Increase) decrease in deferred rent
      receivable..................................         (741)            149
    Increase in deferred costs....................          ---            (921)
    (Increase) decrease in other assets ..........      (18,046)            458
    Increase (decrease) in accrued interest
      payable.....................................          458             (53)
    Increase in accrued real estate taxes.........        7,505             977
    Increase (decrease) in accounts payable and
      accrued expenses............................        1,246          (1,797)
    Decrease in liabilities for leases assumed ...         (380)           (542)
    Increase in other liabilities ................        4,890           3,717
                                                   ------------    ------------

Net cash provided by (used in) operating
  activities......................................       17,216          (2,727)
















                                      -6-
<PAGE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

             CONSOLIDATED STATEMENT OF CASH FLOWS OF THE COMPANY AND
         COMBINED STATEMENT OF CASH FLOWS OF THE PREDECESSOR (CONTINUED)
                                 (000'S OMITTED)
                                   (UNAUDITED)
<CAPTION>
                                                          SIX MONTHS ENDED
                                                              JUNE 30
                                                   ----------------------------
                                                       1998            1997
                                                   ------------    ------------
                                                   PRIME GROUP      PREDECESSOR
                                                   REALTY TRUST     PROPERTIES
                                                   ------------    ------------
<S>                                                <C>              <C>
INVESTING ACTIVITIES

Expenditures for real estate and equipment....... $    (257,119)  $      (3,612)
Leasing costs....................................        (1,789)            ---
Additions to mortgage note receivable............           (25)            ---
Increase in escrow deposits for property
  acquisitions...................................        (7,309)            ---
(Increase) decrease in due from affiliates.......        (1,094)          2,803
                                                   ------------    ------------

Net cash used in investing activities............      (267,336)           (809)

FINANCING ACTIVITIES

Proceeds from the sale of Series B Cumulative
  Redeemable Preferred Shares....................        95,318             ---
Proceeds from the private placement of common
  shares.........................................        47,194             ---
Proceeds from mortgage notes payable.............       341,856             480
Proceeds from mortgage notes payable-Affiliate...           ---           1,980
Repayment of mortgage notes payable..............      (212,268)            (62)
Repayment of mortgage note payable-Affiliate.....        (3,984)            ---
Financing costs..................................        (4,161)            ---
Increase in due to affiliates ...................           ---              26
Contributions from minority interest - other.....         1,000             ---
Distribution to minority interest - Operating
  Partnership....................................        (5,176)            ---
Distributions to partners........................           ---              (3)
Dividends paid to preferred shareholders.........        (1,045)            ---
Dividends paid to common shareholders............        (7,416)            ---
                                                   ------------    ------------

Net cash provided by financing activities........       251,318           2,421
                                                   ------------    ------------

Net increase (decrease) in cash and cash
  equivalents....................................         1,198          (1,115)

Cash and cash equivalents at beginning of
  period.........................................        11,969           5,573
                                                   ------------    ------------

Cash and cash equivalents at end of period....... $      13,167   $       4,458
                                                   ============    ============
<FN>
          See notes to consolidated and combined financial statements.
</FN>
                                      -7-
</TABLE>
<PAGE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

             NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS
                                   (UNAUDITED)

1.    BASIS OF PRESENTATION

The accompanying  unaudited  consolidated and combined financial statements have
been prepared in accordance with generally  accepted  accounting  principles for
interim financial information and with the instructions to Form 10-Q and Article
10 of Regulation  S-X.  Accordingly,  they do not include all of the information
and footnotes required by generally accepted accounting  principles for complete
financial statements. In the opinion of management,  all adjustments (consisting
of normal recurring accruals)  considered necessary for a fair presentation have
been  included.  Operating  results for the six month period ended June 30, 1998
are not necessarily  indicative of the results that may be expected for the year
ended  December 31, 1998.  For further  information,  refer to the  consolidated
financial  statements and footnotes  thereto  included in the Prime Group Realty
Trust's  annual report on Form 10-K for the fiscal year ended  December 31, 1997
as filed with the  Securities  and Exchange  Commission on March 31, 1998 ("Form
10-K").

Certain prior period amounts have been  reclassified to conform with the current
financial statement presentation.

2.   FORMATION OF THE COMPANY

Prime Group Realty Trust (the "Company") was formed in Maryland on July 21, 1997
to succeed to and expand the office and industrial  real estate  business of The
Prime Group,  Inc.  ("PGI"),  which  consisted of a portfolio of five office and
seventeen  industrial  properties,  as well as a parking garage facility and the
office and industrial real estate ownership,  acquisition,  development, leasing
and management businesses  historically conducted by PGI (the "PGI Properties").
On November 17, 1997,  the Company  completed its initial  public  offering (the
"IPO" or  "Offering")  of 12.98 million  common  shares of  beneficial  interest
("Common  Shares") and the private  placement of 2.0 million Series A Cumulative
Convertible  Preferred  Shares  ("Convertible  Preferred  Shares") of beneficial
interest (the "Convertible  Preferred Share Private  Placement").  The Company's
assets are owned and  controlled  by, and all of its  operations  are  conducted
through,  Prime Group  Realty,  L.P.  (the  "Operating  Partnership")  and other
subsidiaries.  The Operating Partnership also sold 4,569,893 common units in the
Operating Partnership for $85.0 million to Primestone Investment Partners,  L.P.
("Primestone Joint Venture"), a joint venture between PGI and certain affiliates
of Blackstone Real Estate Advisors, L.P.,  BRE/Primestone  Investment L.L.C. and
BRE/Primestone  Management Investment L.C.C.  Primestone obtained a 60% interest
in Primestone Joint Venture in exchange for the contribution of 3,375,000 of its
common units in the Operating  Partnership received from the contribution of its
interest in the PGI Properties to the Operating Partnership.

Pursuant to financing  arrangements  for the  properties,  the  partnerships  or
limited liability companies which are subsidiaries of the Operating  Partnership
and own the properties often have, as a partner or member, a separate  corporate
subsidiary  of the Company  whose  board of  directors  includes an  independent
director  that,  as required by such  financing  arrangements,  must approve the
commencement of any voluntary  dissolution or insolvency proceeding with respect
to such subsidiary.

3.   INCOME TAXES

Commencing  with the period ended  December  31,  1997,  it is the intent of the
Company to qualify as a real estate investment trust ("REIT") under the Internal
Revenue Code of 1986, as amended.  As a REIT, the Company  generally will not be
subject to federal  income tax to the extent that it distributes at least 95% of
its REIT taxable  income to its  shareholders.  REITs are subject to a number of
organizational and operational requirements.  If the Company fails to qualify as
a REIT in any taxable  year,  the Company will be subject to federal  income tax
(including  any  applicable  alternative  minimum tax) on its taxable  income at
regular corporate tax rates.

                                      -8-
<PAGE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS - CONTINUED
                                   (UNAUDITED)

4.   USE OF ESTIMATES

The  preparation  of the  financial  statements  in  conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect the  reported  amounts of assets and  liabilities  and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements and the reported amounts of revenue and expenses during the reporting
period. Actual results could differ from these estimates.

5.   RECENT DEVELOPMENTS

During the  period  from  January  1, 1998  through  June 30,  1998 the  Company
acquired the following eight office properties:
<TABLE>
<CAPTION>
                                       NET        ACQUISITION   MORTGAGE
                                       RENTABLE   COST          DEBT (*)
                                       SQUARE     (IN           (IN         MONTH
     PROPERTY          LOCATION        FEET       MILLIONS)     MILLIONS)   ACQUIRED
     --------          --------        ---------  -----------   ---------   --------
<S>                    <C>             <C>        <C>           <C>         <C>

33 North Dearborn     Chicago, IL        302,818  $      34.4   $    18.0     1/98
Commerce Point        Arlington Hts.,    236,642         29.4        20.0     2/98
208 South LaSalle        IL
   Street             Chicago, IL        827,494         61.2        45.8     3/98
122 South Michigan    Chicago, IL        512,369         29.6         ---     4/98
2100 Swift Drive      Oak Brook, IL      58,000           6.2         5.2     4/98
6400 Shafer Court     Rosemont, IL       161,730         21.4        14.4     5/98
Two Century Centre    Schaumburg, IL     217,960         35.7         ---     6/98
Oak Brook Business
  Center              Oak Brook, IL      199,245         16.2         ---     6/98
                                       ---------  -----------   ---------
                                       2,516,258  $     234.1   $   103.4
                                       =========  ===========   =========
</TABLE>

(*) "See Management's Discussion and Analysis of Financial Condition and Results
of Operations  - Liquidity and Capital  Resources" for a description of the debt
terms.

In June 1998,  the  Company  acquired  the  following  parcels of land under two
purchase contracts:
<TABLE>
<CAPTION>
                                                                 ACQUISITION
                                                                    COST
            PROPERTY              LOCATION          ACRES       (IN MILLIONS)
            --------              --------          -----       -------------
        <S>                       <C>               <C>         <C>

        Aurora Land - I          Aurora, IL          37.3           $ 3.1
        Aurora Land - II         Aurora, IL          17.4             1.4
                                                     ----           -----
                                                     54.7           $ 4.5
                                                     ====           =====
</TABLE>

The contracts require purchase of an additional 132.7 acres over a three to five
year  period  for  additional  consideration  of  $10,394,210.  Certain  minimum
installment  payments are required;  however,  the timing of the purchases is at
the Company's discretion.

Concurrently  with the  closing  of the IPO,  the  Company  obtained  a  secured
revolving  credit  facility  (the "Credit  Facility")  from a group of financial
institutions. In March 1998, the Credit Facility was amended to provide that the
commitments  under the Credit  Facility be reduced from $235.0 million to $200.0
million.  In April 1998, the Credit Facility was further amended to provide that
the commitments under the Credit Facility be reduced to $190.0 million.

                                      -9-
<PAGE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS - CONTINUED
                                   (UNAUDITED)

5.   RECENT DEVELOPMENTS (CONTINUED)

In January 1998, the Company  obtained a $15.0 million  revolving line of credit
with LaSalle  National  Bank (the "Line of Credit").  The Line of Credit,  which
matures in January 1999 and is subject to a one-year  extension at the Company's
option,  is  collateralized  by an  industrial  property  known as 475  Superior
Avenue.  Outstanding  balances  under the Line of Credit bear interest at a rate
equal to LIBOR plus 195 basis points.  Generally, the covenants contained in the
Line of Credit are identical to the covenants contained in the Credit Facility.

Concurrently  with the closing of the IPO, the Company borrowed $83.5 million in
financing  on a  short-term  basis  evidenced  by two  separate  notes (the "New
Mortgage Notes") which were  collateralized by first mortgages on certain office
and industrial  properties.  On April 1, 1998, the Company refinanced one of the
New Mortgage  Notes (which had an original  principal  balance of $27.5 million)
with a loan of $29.4  million  which will mature on March 23, 2008.  Interest on
this loan is fixed for 10 years at a rate of 6.85% and is payable  monthly.  The
remaining  New Mortgage Note (which had an original  principal  balance of $56.0
million) was  refinanced on May 1, 1998 with two loans,  the first of which is a
$47.0  million loan which has principal and interest  payable  monthly,  using a
30-year  amortization period, with interest fixed at 7.17% and a maturity of May
1, 2008. The second loan is a $14.6 million loan which has interest only payable
monthly  at 150 basis  points  over  LIBOR or .50% plus the  greater  of (a) the
lender's U.S.  prime rate or (b) the Federal Funds Rate plus 1.0% and matures on
May 1, 2000, not including a six-month  extension  option.  The refinanced notes
are   collateralized  by  first  mortgages  on  certain  office  and  industrial
properties.  As a result of the above  refinancing,  the Company  recognized  an
extraordinary   loss  of  $525,000,   net  of  minority  interest  of  $375,000,
representing the write-off of previously unamortized deferred financing fees.

In Feruary 1998, the Company  refinanced $48.8 million of letters of credit that
provided credit  enhancements on certain of the Company's bonds payable from the
Credit  Facility  to a  separate  financing  facility  provided  by a  financial
institution (the "New LOC's"). The New LOC's have a quarterly fee of 1.4% of the
face amount and are collateralized by mortgages on certain industrial and office
properties and a $5.0 million cash collateral account.

On March 31, 1998,  the Company issued 10,000 and 2,500 Common Shares granted to
an officer  and a board  member of the  Company,  respectively,  pursuant  to an
employment  agreement  and a consulting  agreement.

On March 25,  1998,  the Company  completed a private  placement of 2.58 million
Common Shares to institutional investors (the "Private Placement").  The Company
received proceeds,  net of underwriter  discount, of approximately $49.2 million
from the  Private  Placement,  which  were used to fund the  acquisition  of the
office  properties  located at 208 South LaSalle  Street and 122 South  Michigan
Avenue.

On March 30, 1998,  the Company  entered into a joint  venture that  acquired an
approximately  67,000  square foot vacant parcel of land located in the Chicago,
Illinois central business district  ("Chicago CBD"). The parcel was acquired for
the  potential  development  of a Class  A  multi-purpose  facility,  with up to
900,000  square feet of office space,  125,000 square feet of retail space and a
parking  garage  with a capacity  for  approximately  250 cars.  The Company has
economic  control of the joint  venture and,  therefore,  has  consolidated  the
operations of the joint  venture from the date of  inception.  The joint venture
entered  into a bank loan in the amount of $13.5  million  to acquire  the land.
Interest is payable  monthly at a rate of LIBOR plus 200 basis  points or at the
lender's  prime rate.  The note matures April 1, 1999, not including a six-month
extension  option.  The other joint  venturer's  interest has been  reflected as
Minority Interest - Other at June 30, 1998.

                                      -10-
<PAGE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS - CONTINUED
                                   (UNAUDITED)

5.   RECENT DEVELOPMENTS (CONTINUED)

On May 15,  1998,  the Company  obtained a 7.22% note  payable  with a principal
balance of $75.0 million,  collateralized  by a mortgage on the suburban  office
building  known  as  Continental  Towers.  The  note  matures  in  2013,  with a
prepayment  option in 2005, and has monthly  payments of principal and interest,
using a 25-year principal  amortization payment schedule. The Company used $70.0
million of the proceeds to repay a portion of the Credit Facility. The remaining
proceeds were utilized to pay related costs and to fund escrow reserves required
by the terms of the note.

On June 5, 1998,  the Company  completed  the sale of 4.0 million  shares of its
Series B Cumulative  Redeemable Preferred Stock (the "Redeemable Preferred Share
Offering").  The Company received net proceeds, net of underwriters'  discounts,
of  approximately  $96.85 million which were used to fund the acquisition of Two
Century  Centre and Oak Brook  Business  Center and repay  borrowings  under the
Credit Facility and the Line of Credit. Distributions on the Series B Redeemable
Preferred  Shares are  payable  quarterly  on or about the last day of  January,
April, July and October of each year, at the rate of 9% (equivalent to $2.25 per
annum  per  Series  B  Cumulative  Redeemable  Preferred  Share).  The  Series B
Cumulative  Redeemable Preferred Shares rank senior to the Common Shares and the
Convertible  Preferred  Shares  as to the  payment  of  dividends  and as to the
distribution of assets.

On and after June 5, 2003, the Series B Cumulative  Redeemable  Preferred Shares
may be redeemed at the option of the Company at a redemption price of $25.00 per
share plus accrued and unpaid  distributions.  The  redemption  price is payable
solely  out of the  proceeds  of sale of  other  capital  shares  of  beneficial
interest of the Company.

6.   RECENTLY ISSUED ACCOUNTING PRINCIPLES

In June 1998,  the  Financial  Accounting  Standards  Board issued  Statement of
Financial  Accounting Standards No. 133, "Accounting for Derivative  Instruments
and Hedging  Activities" ("Statement  133"),  which is effective  for all fiscal
quarters and fiscal years  beginning after June 15, 1999. The Company intends to
adopt Statement 133 in 1999.  Management believes that the adoption of Statement
133 will not have a material  effect on the  Company's  results of operations or
financial position.

7.   EARNINGS PER SHARE

The following  table sets forth the  computation of basic and diluted net income
available  per  weighted-average  common share of beneficial  interest  ("Common
Share") for the three months and six months ended June 30, 1998:

<TABLE>
<CAPTION>
                                                   THREE MONTHS      SIX MONTHS
                                                       ENDED            ENDED
                                                      JUNE 30,        JUNE 30,
                                                       1998            1998
                                                   ------------    ------------
<S>                                                <C>             <C>
NUMERATOR:
  Net income available to Common Shares before
    extraordinary item........................... $      2,978    $       5,198
      Extraordinary item, net....................         (525)            (525)
                                                   -----------     ------------
  Numerator for basic earnings per share-income
    available to Common Shares................... $      2,453    $       4,673
                                                   ===========     ============

                                      -11-
<PAGE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS - CONTINUED
                                   (UNAUDITED)

7.   EARNINGS PER SHARE (CONTINUED)
<CAPTION>
                                                   THREE MONTHS      SIX MONTHS
                                                       ENDED            ENDED
                                                      JUNE 30,        JUNE 30,
                                                       1998            1998
                                                   ------------    ------------
<S>                                                <C>             <C>
DENOMINATOR:
     Denominator for basic earnings per share
      - weighted average Common Shares...........    15,572,494      14,383,258
                                                   ------------    ------------

       Effect of dilutive securities:
         Employee stock options..................           ---          16,545
                                                   ------------    ------------
     Dilutive potential Common Shares............           ---          16,545
                                                   ------------    ------------
     Denominator for diluted earnings per share
       - adjusted weighted-average Common Shares
       and assumed conversions...................    15,572,494      14,399,803
                                                   ============    ============

     Basic and diluted earnings available to
       Common Shares per weighted average
       Common Share:
        Net income before extraordinary item..... $       0.19    $        0.36
        Extraordinary item.......................        (0.03)           (0.04)
                                                   -----------     ------------
       Net income per Common Share............... $       0.16    $        0.32
                                                   ===========     ============
</TABLE>

Options to purchase 1,167,500 Common Shares at a weighted average exercise price
of $20.05 per share outstanding  during the three months ended June 30, 1998 and
options to purchase  82,500 Common Shares at a weighted  average price of $20.64
per  share  outstanding  during  the six  months  ended  June 30,  1998 were not
included in the computation of diluted earnings per share because the conversion
would be antidilutive.

The Company had 10,280,882  Common Units  outstanding at June 30, 1998, of which
9,353,782 ("Convertible Common Units") may be converted into Common Shares after
one year from the  completion of the Offering at the option of the Company.  The
Convertible  Common  Units  were not  included  in the  computation  of  diluted
earnings per share because the conversion would be antidilutive.

The Company had 2,000,000  Convertible  Preferred Shares  outstanding during the
six months  ended June 30, 1998 which were not included in the  computations  of
diluted earnings per share because the conversion would be antidilutive.

8.   PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

The  accompanying  unaudited  Pro Forma  Condensed  Consolidated  Statements  of
Operations  of the  Company  are  presented  as if, at January 1, 1997,  (i) the
Company had completed  the Offering,  the  Convertible  Preferred  Share Private
Placement, the Redeemable Preferred Share Offering and the Private Placement and
used the net  proceeds  to  acquire  Preferred  Units  and  Common  Units of the
Operating Partnership, (ii) PGI and other individuals had contributed certain of
their respective  properties and operations (the  "Contribution  Properties") to
the Operating  Partnership,  (iii) the Operating  Partnership  had completed the
sale of Common Units to Primestone Joint Venture, (iv) the Operating Partnership
acquired  various office and industrial  properties  with cash and debt proceeds
(the "Acquisition  Properties") and a property  management  company from various
third parties, and (v) the Operating Partnership repaid debt on

                                      -12-
<PAGE>
                     PRIME GROUP REALTY TRUST (THE COMPANY)
           AND PREDECESSOR PROPERTIES (THE PREDECESSOR TO THE COMPANY)

       NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS - CONTINUED
                                   (UNAUDITED)

8.       PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (CONTINUED)

certain  of the  Contribution  Properties.  The  unaudited  pro forma  Condensed
Consolidated  Statements  of  Operations  should  be  read in  conjunction  with
unaudited Pro Forma Condensed  Consolidated  financial statements and all of the
historical financial statements contained in Form 10-K. In management's opinion,
all adjustments necessary to reflect the transactions  described above have been
made.

The unaudited Pro Forma Condensed  Consolidated  Statements of Operations of the
Company are not necessarily  indicative of what the actual results of operations
would have been assuming the Offering,  the Convertible  Preferred Share Private
Placement,  the Redeemable  Preferred  Share Offering the Private  Placement and
other  transactions  described above had occurred at the dates indicated  above,
nor do they purport to present the future results of operations of the Company.

<TABLE>
<CAPTION>
                                                      SIX MONTHS ENDED JUNE 30,
                                                    ---------------------------
                                                       1998                1997
                                                    ------------   ------------
<S>                                                 <C>            <C>

  Total revenue (in 000's)                         $      75,499  $      70,553
                                                    ============   ============
  Net income (in 000's)                            $       8,209  $       4,303
                                                    ============   ============
  Net income (loss) available to common
    shareholders (in 000's)                        $       2,309  $      (1,597)
                                                    ============   ============
  Earnings (loss) per common share                 $        0.15  $       (0.10)
                                                    ============   ============
</TABLE>

Pro forma earnings per common share increased by $0.25 from the six months ended
June 30, 1997 to the six months  ended June 30, 1998  primarily  due to improved
operations at the properties in 1998.

9.   SUBSEQUENT EVENTS

In July and August 1998,  the Company  entered into  contracts to acquire  three
office  properties,  one  industrial  property  and two land  parcels  for total
contract prices of approximately $422.5 million. The Company has made escrow and
other deposits of $30.2 million related to these contracts.

The Company  expects to complete the above  acquisitions by the end of the first
quarter  of 1999;  however,  there  can be no  assurance  that any or all of the
acquisitions will be completed.

                                      -13-
<PAGE>
ITEM 2:  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS.

OVERVIEW

The  Company  is a  fully-integrated  real  estate  company  providing  property
management,  leasing,  marketing,   acquisition,   development,   redevelopment,
construction,  finance and other  related  services.  As of June 30,  1998,  the
Company  expects to  qualify as a REIT for  federal  income  tax  purposes.  The
Company (through the Operating  Partnership) owns 24 office properties  ("Office
Properties")  containing an aggregate of approximately  5.8 million net rentable
square feet, 46 industrial properties  ("Industrial  Properties")  containing an
aggregate  of  approximately  5.8 million net rentable  square feet,  one retail
center and one parking  facility.  The properties  are located  primarily in the
Chicago, Illinois metropolitan area. In addition, the Company owns a mortgage on
an office property containing 728,406 net rentable square feet. The Company also
owns  approximately   139.7  acres  (including  a  development  site  containing
approximately  67,000  square  feet  located in the  Chicago CBD held by a joint
venture with a third party) and has rights to acquire  approximately 437.8 acres
of developable  land (including  rights to acquire a development site located in
the Chicago CBD containing  approximately  58,000 square feet), which management
believes  could be  developed  with  approximately  3.0  million  square feet of
additional  office  space  and  over  9.4  million  square  feet  of  additional
industrial space primarily in the Chicago metropolitan area.

In  terms  of net  rentable  square  feet,  approximately  90.1%  of the  Office
Properties  and 87.5% of the  Industrial  Properties  are located in the Chicago
metropolitan  area in  prime  business  locations  within  established  business
communities. The properties located in the Chicago metropolitan area account for
approximately  93.1% of the Company's  rental  revenue and tenant  reimbursement
revenue for the six months ended June 30, 1998. The remaining Office  Properties
are located in Nashville,  Tennessee;  Knoxville,  Tennessee; and the Milwaukee,
Wisconsin  metropolitan  areas,  and the  remaining  Industrial  Properties  are
located in the Columbus, Ohio metropolitan area. The Company intends to continue
to  invest in the  acquisition,  development  and  redevelopment  of office  and
industrial properties primarily located in the Chicago metropolitan area.

The  Company  intends to access  multiple  sources  of  capital  to fund  future
acquisition  and  development  activities.  These  capital  sources  may include
undistributed  cash  flow,  borrowings  under  certain  acquisition  facilities,
proceeds  from the  issuance  of  long-term,  tax-exempt  bonds,  joint  venture
arrangements  and  other  debt  or  equity  securities  and  other  bank  and/or
institutional borrowings. There can be no assurance that any such financing will
be obtained.

CAUTIONARY STATEMENTS

The following  discussion in "Management's  Discussion and Analysis of Financial
Condition and Results of Operations" contains certain forward-looking statements
within the meaning of the Private Securities Litigation Reform Act of 1995 which
reflect  management's  current view with respect to future  events and financial
performance.  Such  forward-looking  statements are subject to certain risks and
uncertainties,  including,  but not limited to, the effects of future  events on
the Company's financial performance;  the risk that the Company may be unable to
finance its planned acquisition and development activities; risks related to the
industrial  and office  industries  in which the Company's  properties  compete,
including the potential  adverse  impact of external  factors such as inflation,
consumer  confidence,  unemployment  rates and consumer tastes and  preferences;
risks  associated  with  the  Company's  development  activities,  such  as  the
potential for cost overruns,  delays and lack of predictability  with respect to
the financial returns associated with these development activities;  the risk of
potential  increase  in market  interest  rates from  current  rates;  and risks
associated with real estate  ownership,  such as the potential adverse impact of
changes  in the local  economic  climate  on the  revenues  and the value of the
Company's properties.

                                      -14-
<PAGE>
RESULTS OF OPERATIONS

Comparison  of the Three  Months Ended June 30, 1998 of the Company to the Three
Months Ended June 30, 1997 of the Predecessor Properties
- --------------------------------------------------------------------------------

In analyzing  the  operating  results for the quarter  ended June 30, 1998,  the
changes in rental and reimbursable  income,  property operating  expenses,  real
estate taxes and depreciation and amortization  from 1997 are due principally to
the addition of operating  results from  properties  contributed and acquired as
part of the Company's IPO as well as properties  acquired  after the IPO through
June 30, 1998.

The Predecessor  Properties  consisted of five office properties,  17 industrial
properties, as well as a parking facility. At the time of the IPO, 11 additional
office  properties,  28 additional  industrial  properties and one retail center
were  contributed  or  acquired.  After the date of the IPO and through June 30,
1998,  the  Company  acquired ten  additional  office  properties  and the first
mortgage note  encumbering  one office property as described in the footnotes to
the Company's Form 10-K.

For the three  months  ended  June 30,  1998,  rental  revenue  increased  $15.2
million, or 187.2%, to $23.4 million, tenant reimbursement income increased $6.5
million,  or 181.4%,  to $10.0 million,  other revenue increased $1.7 million to
$2.0 million, or 566.7%,  property operating expenses increased $4.9 million, or
251.1%,  to $6.9 million,  real estate tax expense  increased  $4.1 million,  or
148.4%,  to $6.9  million  and  depreciation  and  amortization  increased  $2.8
million,  or 82.8%,  to $6.2  million as compared to the three months ended June
30, 1997. The  additional  office and  industrial  properties  resulted in total
rental revenue of $15.9 million,  tenant  reimbursements income of $5.9 million,
property  operating  expenses of $5.0  million,  real estate tax expense of $4.0
million and  depreciation  and amortization of $3.2 million for the three months
ended June 30,  1998.  Rental  revenue and tenant  reimbursement  income for the
Predecessor  Properties  (decreased)  increased $(0.6) million and $0.6 million,
respectively,  for the three  months  ended June 30,  1998  compared to the same
period in 1997,  due to a major  tenant  of the 77 West  Wacker  Drive  building
defaulting  on its  lease in the  second  quarter  of 1997.  Property  operating
expenses,  real estate tax expense and  depreciation  and  amortization  for the
Predecessor  Properties  for the  three  months  ended  June 30,  1998  remained
consistent with the same period in 1997.

Mortgage note interest  income  increased by $1.5 million to $1.5 million on due
to the acquisition of the first mortgage note  encumbering the property known as
180 North LaSalle in December 1997.

Interest  expense had a net decrease of $1.7 million,  or 17.2%, to $8.1 million
during the three  months  ended June 30,  1998.  The decrease was due to an $9.1
million  decrease as a result of the  repayment of debt with  proceeds  from the
Company's IPO,  offset by an increase of $7.4 million due to mortgages  obtained
on certain of the properties  which were  contributed or acquired after the IPO,
as well as Credit  Facility and Line of Credit  borrowings used to fund property
acquisitions.

General and  administrative  expense  increased  $0.7  million  during the three
months ended June 30, 1998, reflecting costs related to the Company's new public
status and its increased size.

The decrease in financing fees and property and asset  management fees is due to
these fees being  incurred by the  Predecessor  Properties  under their previous
ownership and the costs no longer being incurred by the Company.

In 1997,  the  Predecessor  Properties  recorded a provision  for  environmental
remediation  costs of $3.2  million as an estimate  of costs to be incurred  for
environmental  clean-up  of certain  properties.  In  management's  opinion,  no
additional provision is necessary.

Income allocated to minority interest increased $3.0 million, or 333.3%, to $2.9
million for the three months ended June 30, 1998  compared to the same period in
1997 due to an increase in income before minority interest of $17.9 million,  or
167.4%, to $7.2 million and a change in the ownership structure. The increase in
income before  minority  interest is due to additional  properties  either being
contributed  or  acquired  and the  effects they had on  revenue and expenses as
described above. The change in ownership  structure is due to certain  ownership
percentages changing during the IPO.

                                      -15-
<PAGE>
Net income  increased  $14.4 million,  or 135.8%,  to $3.8 million for the three
months  ended  June 30,  1998  compared  to the same  period  in 1997 due to the
changes in revenue, expenses and minority interest described above.

Comparison  of the Six  Months  Ended  June 30,  1998 of the  Company to the Six
Months Ended June 30, 1997 of the Predecessor Properties
- --------------------------------------------------------------------------------

In analyzing the operating  results for the six months ended June 30, 1998,  the
changes in rental and reimbursable  income,  property operating  expenses,  real
estate taxes and depreciation and amortization  from 1997 are due principally to
the addition of operating  results from  properties  contributed and acquired as
part of the Company's IPO as well as properties  acquired  after the IPO through
June 30, 1998.

For the six months ended June 30, 1998,  rental revenue increased $25.3 million,
or  157.1%,  to $41.5  million,  tenant  reimbursement  income  increased  $10.6
million, or 136.8%, to $18.4 million, property operating expenses increased $7.6
million,  or 176.5%,  to $11.9 million,  real estate tax expense  increased $6.6
million, or 118.8%, to $12.2 million and depreciation and amortization increased
$5.1 million,  or 78%, to $11.6 million as compared to the six months ended June
30, 1997. The  additional  office and  industrial  properties  resulted in total
rental revenue of $24.8 million,  tenant  reimbursements income of $9.3 million,
property  operating  expenses of $8.3  million,  real estate tax expense of $7.0
million and  depreciation  and  amortization  of $4.9 million for the six months
ended June 30,  1998.  Rental  revenue and tenant  reimbursement  income for the
Predecessor  Properties increased (decreased) $(0.8) million and $(0.8) million,
respectively, for the six months ended June 30, 1998 compared to the same period
in 1997, due to a major tenant of the 77 West Wacker Drive  building  defaulting
on its lease in the second quarter of 1997.  Property operating  expenses,  real
estate  tax  expense  and  depreciation  and  amortization  for the  Predecessor
Properties for the six months ended June 30, 1998 remained  consistent  with the
same period in 1997.

Mortgage note interest  income  increased by $3.0 million to $3.0 million due to
the acquisition of the first mortgage note encumbering the property known as 180
North LaSalle in December 1997.

Interest expense had a net decrease of $4.8 million,  or 24.7%, to $14.5 million
during the six months  ended June 30,  1998.  The  decrease  was due to a  $17.9
million  decrease as a result of the  repayment of debt with  proceeds  from the
Company's IPO, offset by an increase of $13.1 million due to mortgages  obtained
on certain of the properties  which were  contributed or acquired after the IPO,
as well as Credit  Facility and Line of Credit  borrowings used to fund property
acquisitions.

General and administrative  expense increased $1.2 million during the six months
ended June 30, 1998, reflecting costs related to the Company's new public status
and its increased size.

The decrease in financing fees and property and asset  management fees is due to
these fees being  incurred by the  Predecessor  Properties  under their previous
ownership and the costs no longer being incurred by the Company.

In 1997,  the  Predecessor  Properties  recorded a provision  for  environmental
remediation  costs of $3.2  million as an estimate  of costs to be incurred  for
environmental  clean-up  of certain  properties.  In  management's  opinion,  no
additional provision is necessary.

Income allocated to minority interest  increased $5.5 million,  or 106%, to $5.2
million for the six months  ended June 30,  1998  compared to the same period in
1997 due to an increase in income before minority interest of $30.0 million,  or
170.6%, to $12.4 million and a change in the ownership  structure.  The increase
in income before minority interest is due to additional  properties being either
contributed  or  acquired  and the  effects  they had on  revenue  and  expenses
described  above.  The  change  in  ownership  structure  is due to the  certain
ownership percentages changing during the IPO.

Net income  increased  $23.9  million,  or 170.6%,  to $6.7  million for the six
months  ended  June 30,  1998  compared  to the same  period  in 1997 due to the
changes in revenue, expenses and minority interest described above.

                                      -16-
<PAGE>
LIQUIDITY AND CAPITAL RESOURCES

       THE  CREDIT  FACILITY.  As of June 30,  1998,  the  Company  has a Credit
Facility of $190.0  million  from a group of banks led by  BankBoston,  N.A. and
Prudential  Securities Credit Corporation  ("PSCC"),  an affiliate of Prudential
Securities  Incorporated.  Borrowings under the Credit Facility are available to
fund  acquisitions  and development  activities and to provide letters of credit
for $26.0 million of tax-exempt  bonds.  The Credit  Facility,  which matures on
November 17, 2000, is  collateralized  by the 77 West Wacker Building and all of
the Company's properties located in Tennessee and was secured by a pledge of the
Company's mortgage note receivable on Continental Towers until May 15, 1998 when
the Company  repaid  $70.0  million of the Credit  Facility in  connection  with
obtaining  the  $75.0  million  loan  collateralized  by  Continental  Towers as
described  below  under  "1998  Mortgage  Notes".  Concurrently  with  the  loan
transaction,  the Credit  Facility  was reduced  from  $200.0  million to $190.0
million.

The Credit  Facility,  at the Company's  election,  bears interest on Eurodollar
loans at a floating rate based on a spread over the Eurodollar rate equal to 120
to 150 basis points,  depending upon the Company's applicable leverage ratio, or
the higher of  BankBoston's  prime rate or the federal  funds rate plus 50 basis
points.  Notwithstanding  the  foregoing,  the Credit  Facility  was  amended to
provide that for the period from  December  15, 1997 through  February 14, 1998,
the spread over the Eurodollar rate applicable to Eurodollar  loans was equal to
175 basis points and for the period from February 15, 1998 through May 15, 1998,
such spread was equal to 200 basis points.  Borrowings under the Credit Facility
may be repaid at any time, without penalty,  except for the costs related to the
breakage of the  Eurodollar  rate loan,  if any.  The Credit  Facility  requires
monthly  payments  of  interest  only on prime rate and  Eurodollar  rate loans.
Eurodollar rate loans may be for periods of between 30 and 180 days. At June 30,
1998 borrowings  under the Credit  Facility bore interest at a  weighted-average
rate equal to 7.13%.

The  Company's  ability to borrow  under the Credit  Facility  is subject to the
Company's ongoing compliance with a number of financial and other covenants. The
Credit  Facility,  except  under  certain  circumstances,  limits the  Company's
ability  to  make  distributions  in  excess  of 90% of its  annual  Funds  from
Operations.

Since the IPO, the Credit  Facility has been amended from time to time to, among
other  things,  modify  the  loan  commitments  and the  interest  rate  payable
thereunder,  and the Company  has  obtained  several  limited  waivers  from the
lenders under the Credit Facility in connection with certain acquisitions.

       NEW  MORTGAGE  NOTES.  The Company  borrowed  $83.5  million in aggregate
principal  amount under the New Mortgage  Notes.  PSCC provided the original New
Mortgage Notes financing on a short-term  basis.  The New Mortgage Notes consist
of two  separate  notes  secured,  respectively,  by first  mortgages on certain
office and industrial  properties.  Prior to their refinancing,  interest on the
New Mortgage Notes was fixed to 7.19% (a rate equal to seven-year U.S.  Treasury
Notes,  plus 1.27%).  On March 23, 1998,  the Company  refinanced one of the New
Mortgage Notes (which had an original principal balance of $27.5 million) with a
loan of $29.4 million, which will mature on April 1, 2008. Interest on this loan
accrues at a rate of 6.85% and is payable  monthly.  The  remaining New Mortgage
Note (which had an original  principal  balance of $56.0 million) was refinanced
on May 1, 1998 with two loans,  the first of which is a $47.0 million loan which
has principal and interest payable monthly, using a 30-year amortization period,
with interest  fixed at 7.17% and will mature on May 1, 2008. The second loan is
a $14.6 million loan which has interest only payable monthly at 150 basis points
over LIBOR or 0.50% plus the greater of (a) the lender's U.S.  prime rate or (b)
the Federal Funds rate plus 1.0% and will mature on May 1, 2000, not including a
six month extension  option.  The refinanced notes are  collateralized  by first
mortgages on certain office and industrial properties.  As a result of the above
refinancing,  the Company recognized an extraordinary  item of $525,000,  net of
minority  interest  of  $375,000,   representing  the  write-off  of  previously
unamortized deferred financing fees.

                                      -17-
<PAGE>
       1998 MORTGAGE  NOTES.  During 1998,  the Company has acquired five of its
eight new Office  Properties  with proceeds from property  mortgage  loans.  The
following is a summary of those loans:

<TABLE>
<CAPTION>
                           INITIAL
                          PRINCIPAL                INTEREST
      PROPERTY          (IN MILLIONS)              RATE (%)             MATURITY
- --------------------    -------------     ---------------------------   --------
<S>                     <C>               <C>                           <C>

33 North Dearborn       $        18.0     LIBOR plus 165 basis points     1/2000
Commerce Point                   20.0               7.07                  2/2008
208 South LaSalle                45.8               7.785                 4/2008
2100 Swift Drive                  5.2               7.19                  5/2028
6400 Shafer Court                14.4               7.09                  5/2028
                        -------------
                        $       103.4
                        =============
</TABLE>

Except for the loan  relating  to 33 North  Dearborn,  all of the loans  require
monthly payments of principal and interest.  The 33 North Dearborn loan requires
monthly payments of interest only.

On May 15, 1998, the Company  obtained a 7.22% note payable,  collateralized  by
the Company's note  receivable  encumbering a suburban  office building known as
Continental Towers, with a principal balance of $75.0 million.  The note matures
in 2013, with a prepayment option in 2005, and has monthly payments of principal
and interest,  using a 25-year  principal  amortization  payment  schedule.  The
Company  used  $70.0  million of the  proceeds  to repay a portion of the Credit
Facility.

In January 1998, the Company obtained a $15.0 million  revolving  line of credit
with LaSalle  National  Bank (the "Line of Credit").  The Line of Credit,  which
matures in January 1999 and is subject to a one-year  extension at the Company's
option,  is  collateralized  by an  industrial  property  known as 475  Superior
Avenue.  Outstanding  balances  under the Line of Credit bear interest at a rate
equal to LIBOR plus 195 basis points.  Generally, the covenants contained in the
Line of Credit are identical to the covenants contained in the Credit Facility.

       LETTERS OF CREDIT. The Company has refinanced $48.8 million of letters of
credit that  provided  credit  enhancements  on certain of the  Company's  bonds
payable  from  the  Credit  Facility  to the New  LOC's.  The New  LOC's  have a
quarterly fee of 1.4% of the face amount and are  collateralized by mortgages on
certain  industrial  and office  properties  and a $5.0 million cash  collateral
account.

       ANALYSIS OF LIQUIDITY AND CAPITAL RESOURCES.  The Company expects to meet
its short-term liquidity  requirements generally through its working capital and
net cash provided by operations.  The properties require periodic investments of
capital  for  tenant-related   capital  expenditures  and  for  general  capital
improvements.  Over  the  past  three  years,  the  Company's  recurring  tenant
improvements  and leasing  commissions for the Predecessor  Properties  averaged
$4.47 per  square  foot of leased  space  and  $0.40 per  square  foot of leased
industrial  space per year. The Company  expects that the average annual cost of
recurring tenant improvements and leasing commissions will be approximately $3.6
million based on the average  annual  square feet for which leases expire during
the  next  three  years.  The  Company  expects  the  cost  of  general  capital
improvements to the properties to average  approximately  $0.9 million  annually
based upon an estimate of $0.08 per square foot.

The Company expects to meet its long-term liquidity requirements for the funding
of property  development,  property acquisitions and other non-recurring capital
improvements through long-term secured and unsecured indebtedness (including the
Credit Facility), joint venture agreements and the issuance of additional equity
securities  from  the  Company.  The  terms  of  the  Credit  Facility  and  the
Convertible  Preferred  Shares impose  restrictions on the Company's  ability to
incur indebtedness and issue additional preferred shares.

HISTORICAL CASH FLOWS

In analyzing cash flows for the quarter ended June 30, 1998, the changes in 1997
are due  principally to the addition of cash flows from  properties  contributed
and acquired as part of the Company's IPO as well as properties  acquired  after
the IPO through June 30, 1998.

                                      -18-
<PAGE>
The Company had net cash  provided by (used in)  operating  activities  of $17.2
million  and $(2.7)  million  for the six months  ended June 30,  1998 and 1997,
respectively.  The $19.9  million  increase is primarily  due to a $23.9 million
increase in net income,  a 5.1 million increase in depreciation and amortization
expense,  a $5.5 million  increase in income allocated to minority  interest,  a
$0.5 million increase in accrued  interest,  a $3.0 million increase in accounts
payable and accrued  expenses,  a $6.5  million  increase in accrued real estate
taxes,  and a $1.2  million  increase  in other  liabilities,  offset  by a $5.9
million  decrease in interest  expense and fees added to  principal  on mortgage
note payable  affiliate,  a $2.1 million increase in tenant  receivables,  and a
$18.5 million increase in other assets.

The Company had net cash used in investing activities of $267.3 million and $0.8
million  for the six months  ended  June 30,  1998 and 1997,  respectively.  The
$266.5 million increase in net cash used in investing activities from the period
ended June 30, 1997 as compared to the period ended June 30, 1998 was  primarily
due to an $253.5 million increase in expenditures for real estate and equipment,
principally  related to the  acquisition  of five  properties,  $7.3  million in
escrow deposits for future acquisitions, a $3.9 million net increase in advances
to affiliates and a $1.8 million increase in leasing costs.

The Company had net cash provided by financing  activities of $251.3 million and
$2.4 million for the six months ended June 30, 1998 and 1997, respectively.  The
$248.9 million  increase in net cash provided by financing  activities  from the
period ended June 30, 1997 as compared to the period ended June 30, 1998 was due
to net  proceeds of $95.3 from the  Redeemable  Preferred  Share  Offering,  net
proceed of $47.2 million from the Private Placement,  net proceeds from mortgage
notes payable of $125.6 million and additional  minority interest  contributions
of $1.0 million,  offset by financing costs of $4.1 million and distributions to
preferred  shareholders,  common  shareholders  and  minority  interest of $13.6
million.

FUNDS FROM OPERATIONS

Industry analysts  generally  consider Funds from Operations,  as defined by the
National  Association of Real Estate  Investment  Trusts,  Inc.  ("NAREIT"),  an
alternative  measure of performance of an equity REIT.  Funds from Operations is
defined by NAREIT to mean net income (loss)  determined in accordance with GAAP,
excluding gains (or losses) from debt restructuring and sales of property,  plus
depreciation and  amortization  (other than  amortization of deferred  financing
costs and  depreciation  of non-real  estate  assets) and after  adjustment  for
unconsolidated  partnerships  and joint ventures.  The Company  believes that in
order to facilitate a clear understanding of the combined  historical  operating
results of the Company,  Funds from Operations should be examined in conjunction
with net  income  (loss) as  presented  in the  unaudited  financial  statements
included  elsewhere  in this Form  10-Q.  The  following  table  represents  the
unaudited  calculation of the Company's Funds from Operations for the six months
ended June 30,1998 (in thousands):

<TABLE>
<CAPTION>
                                                   PRO FORMA (1)      ACTUAL
                                                   ------------    ------------
<S>                                                <C>             <C>

Net income allocated to common shareholders...... $       2,309   $       4,673

   Real estate depreciation and amortization.....        12,055          10,849
   Amortization of costs for leases assumed......           566             566
   Straight-line rental revenue adjustments......          (522)           (522)
   Minority interest.............................         5,860           5,167
   Extraordinary loss............................          ---              525
                                                   ------------    ------------

Funds from Operations (2)........................ $      20,268   $      21,258
                                                   ============    ============
</TABLE>

(1)  The pro forma  calculation  of Funds  from  Operations  of the  Company  is
     presented  as if, at January 1, 1998,  (i) the  Company had  completed  the
     Redeemable  Preferred Share Offering and the Private Placement and used the
     net proceeds to acquire  Preferred  Units and Common Units of the Operating
     Partnership, (ii) the Operating Partnership had acquired the various office
     and  industrial  properties  acquired  during the six months ended June 30,
     1998 and (iii) the Operating Partnership repaid certain

                                      -19-
<PAGE>
     indebtedness.  The unaudited pro forma calculation of Funds from Operations
     should  be  read  in  conjunction   with  unaudited  Pro  Forma   Condensed
     Consolidated  financial statements contained in the Company's Form 10-K. In
     management's  opinion, all adjustments  necessary to reflect the effects of
     the above described transactions have been made.

(2)  The Company  computes  Funds from  Operations in accordance  with standards
     established  by the Board of  Governors  of NAREIT in its March  1995 White
     Paper (with the exception  that the Company  reports  rental  revenues on a
     cash basis (based on contractual lease terms),  rather than a straight-line
     GAAP  basis,  which  the  Company  believes  results  in  a  more  accurate
     presentation of its actual operating activities), which may differ from the
     methodology  for  calculating  Funds from  Operations used by certain other
     office and/or industrial REITs and,  accordingly,  may not be comparable to
     such other REITs. As a result of the Company's reporting rental revenues on
     a contractual  basis,  contractual rent increases will cause reported Funds
     from  Operations  to  increase.  Further,  Funds from  Operations  does not
     represent amounts  available for management's  discretionary use because of
     needed capital  replacement or expansion,  debt repayment  obligations,  or
     other  commitments and  uncertainties.  Funds from Operations should not be
     considered as an alternative to net income (loss),  as an indication of the
     Company's  performance  or to cash flows as a measure of  liquidity  or the
     ability to pay dividends or make distributions.

READINESS FOR YEAR 2000

The Company is currently  evaluating  the nature and extent of the work required
to make its systems and  infrastructure  Year 2000 compliant.  Based on a recent
assessment,  the Company will have to modify or replace significant  portions of
its  hardware  and  software so that its systems  will  function  properly  with
respect to the Year 2000 and beyond.  Certain of these  systems are currently in
the process of being modified and/or  replaced.  The Company  believes that with
modifications  to certain  existing  software  and  conversions  to new software
applications,  in addition to hardware upgrades on certain  mechanical  systems,
the Year 2000 issue will not pose significant operational problems.  However, if
such  modifications  and  conversions  are not made,  or are not  completed in a
timely  manner,  the  Year  2000  issue  could  have a  material  impact  on the
operations of the Company.

The Company  continues  to evaluate  the Year 2000 issue and will  utilize  both
internal and external resources in order to reprogram, or replace,  systems that
are not in compliance with the Year 2000. The Company anticipates completing the
project  in  mid-1999.  The  cost to  complete  the  project  has  not yet  been
determined.

The project completion date is based on management's best estimates,  which were
derived utilizing numerous  assumptions of future events,  including the ability
of third parties to modify the Company's systems on a timely basis. There can be
no guarantee  that the project will be  completed in a timely  manner.  Specific
factors that might delay completion of the project include,  but are not limited
to, the availability of qualified  personnel,  the ability to locate and correct
relevant computer codes, and similar uncertainties.

INFLATION

The Company's leases with the majority of its tenants require the tenants to pay
most  operating  expenses,  including  real  estate  taxes  and  insurance,  and
increases  in common  area  maintenance  expenses,  which  reduce the  Company's
exposure to increases in costs and operating  expenses resulting from inflation.
As of June 30, 1998,  approximately  $201.3  million in principal  amount of the
Company's  indebtedness bore interest at floating rates and future  indebtedness
may bear floating rate interest.  Inflation, and its impact on floating interest
rates, could affect the amount of interest payments due on such indebtedness.

ITEM 3:  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

       Not applicable.

                                      -20-
<PAGE>
PART II:  OTHER INFORMATION

ITEM 1.           LEGAL PROCEEDINGS.

No material  developments with respect to legal proceedings  occurred during the
period covered by this quarterly report.

ITEM 2.           CHANGES IN SECURITIES AND USE OF PROCEEDS.

On June 5, 1998,  the Company  issued and sold  4,000,000 9% Series B Cumulative
Redeemable Preferred Shares for $25 per share, or an aggregate  consideration of
approximately  $100  million.  So long as any  Series  B  Cumulative  Redeemable
Preferred  Shares  ("Series B Shares")  are  outstanding,  no  dividends  may be
declared  or paid or set  apart for  payment  on  Common  Shares or  Convertible
Preferred  Shares unless full  cumulative  dividends on the Series B Shares have
been or  contemporaneously  are  declared and a sum  sufficient  for the payment
thereof set apart for such payment. In addition, the Series B Shares rank senior
to the Common Shares and the Convertible  Preferred  Shares as to the payment of
dividends and as to the distribution of assets upon liquidation,  dissolution or
winding up. In the event of any  liquidation,  dissolution  or winding up of the
Company,  before any payment or  distribution of the assets of the Company shall
be  made to or set  apart  for the  holders  of  Common  Shares  or  Convertible
Preferred  Shares,  the holders of Series B Shares  shall be entitled to receive
$25.00 per Series B Share, plus an amount equal to all dividends (whether or not
earned or declared) accrued and unpaid thereon to the date of final distribution
to such holders.  Further,  if and whenever six consecutive  quarterly dividends
payable on the Series B Shares shall be in arrears,  the number of trustees then
constituting  the Board of Trustees shall be increased by two and the holders of
Series B Shares,  together  with the holders of shares of every other  series of
shares on parity  with the Series B Shares  (which  does not  include the Common
Shares or the Convertible Preferred Shares),  shall be entitled to elect the two
additional trustees to serve on the Board of Trustees.

ITEM 3.           DEFAULTS UPON SENIOR SECURITIES.

                  None.

ITEM 4.           SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

The Company's  annual Meeting of  Shareholders  was held on May 22, 1998. At the
meeting,  shareholders  voted  on (i) the  election  of two  trustees;  and (ii)
ratification  of  the  appointment  of  Ernst  &  Young  LLP  as  the  Company's
independent auditors for 1998. Voting on each such matter was as follows:

<TABLE>
<CAPTION>
                                  VOTES       VOTES      WITHHELD/     BROKER
                                   FOR       AGAINST    ABSTENTIONS   NON-VOTES
                               ----------    -------    -----------   ---------
<S>                            <C>           <C>        <C>           <C>

1. Election of Trustees:

   Michael W. Reschke          13,096,353       ---        6,640          0
   Jacque M. Ducharme          13,095,053       ---        7,940          0

2. Ratification of Auditors:   13,092,902     3,750        6,341          0
</TABLE>


ITEM 5.           OTHER INFORMATION.

                  None

                                      -21-
<PAGE>
ITEM 6.           EXHIBITS AND REPORTS ON FORM 8-K.

(a)               Exhibits:

EXHIBIT
NUMBER                              DESCRIPTION
- -------   ----------------------------------------------------------------------
   3.1    Amendment  No. 7 to the  Amended  and  Restated  Agreement  of Limited
          Partnership  dated as of April  15,  1998 as  filed as an  exhibit  to
          Amendment No. 1 to the Company's  Registration  Statement on Form S-11
          (No.  333-51599)  as filed  with the  Commission  on May 14,  1998 and
          incorporated herein by reference

   3.2    Amendment  No. 8 to the  Amended  and  Restated  Agreement  of Limited
          Partnership dated as of May 15, 1998

   3.3    Amendment  No. 9 to the  Amended  and  Restated  Agreement  of Limited
          Partnership dated as of June 5, 1998

   3.4    Amendment  No. 10 to the Amended  and  Restated  Agreement  of Limited
          Partnership dated as of June 15, 1998

   4.1    Articles  Supplementary   Classifying  and  Designating  a  Series  of
          Preferred  Shares of  Beneficial  Interest  as 9% Series B  Cumulative
          Redeemable   Preferred  Shares  of  Beneficial   Interest  and  Fixing
          Distribution  and Other  Preferences  and Rights of Such Series  dated
          June 1, 1998

   10.1   Amendment No. 4 to the Credit  Facility  dated as of April 24, 1998 as
          filed as an exhibit to Amendment No. 1 to the  Company's  Registration
          Statement on Form S-11 (No. 333-51599) as filed with the Commission on
          May 14, 1998 and incorporated herein by reference

   10.2   Subordination  and  Intercreditor  Agreement  made as of May 14,  1998
          among  Connecticut  General  Life  Insurance  Company  and Prime Group
          Realty, L.P.

   10.3   Employment  Agreement  dated  as of May 6,  1998  by and  between  the
          Company and Louis Conforti

   10.4   Promissory  Note  dated  May  14,  1998  in the  principal  amount  of
          $75,000,000.00  made by American  National  Bank and Trust  Company of
          Chicago, a national banking association,  not personally but solely as
          trustee under trust  agreement  dated July 26, 1977 and known as Trust
          No. 40935 and American  National Bank and Trust Company of Chicago,  a
          national  banking  association,  as  successor  trustee to First Bank,
          N.A., as successor trustee to National Boulevard Bank of Chicago,  not
          personally,   but  solely  as  trustee  under  trust  agreement  dated
          September  27, 1976 and known as Trust No. 5602,  payable to the order
          of Connecticut General Life Insurance Company

   27.1   Financial Data Schedule

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

   (b)    Reports on Form 8-K:

The Company filed the following  reports on Form 8-K and Form 8-K/A  relating to
the  acquisition of certain real estate  properties  and the required  financial
information:  Form 8-K on January 14, 1998;  Form 8-K on January 30, 1998;  Form
8-K/A on February 27, 1998;  Form 8-K on March 6, 1998;  Form 8-K/A on March 31,
1998;  Form 8-K on April 14, 1998; Form 8-K on April 15, 1998; Form 8-K/A on May
5, 1998; Form 8-K on June 15, 1998 and Form 8-K/A on June 15, 1998.

                                      -22-
<PAGE>
                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.

                                            PRIME GROUP REALTY TRUST
                                            ------------------------
                                            Registrant

Date:           August 14, 1998             /s/  Richard S. Curto
       -------------------------------      ---------------------
                                            Richard S. Curto
                                            President and Chief Executive
                                              Officer

Date:           August 14, 1998             /s/  William M. Karnes
       ------------------------------       ---------------------
                                            William M. Karnes
                                            Executive Vice President and
                                            Chief Financial Officer



                                      -23-

<PAGE>
                     AMENDMENT NO. 8 TO AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                           OF PRIME GROUP REALTY, L.P.

         This  AMENDMENT  NO. 8 TO AMENDED  AND  RESTATED  AGREEMENT  OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of May 15,
1998 by Prime  Group  Realty  Trust,  a Maryland  real estate  investment  trust
("PGRT"),  as the  Managing  General  Partner of Prime  Group  Realty,  L.P.,  a
Delaware  limited  partnership (the  "Partnership"),  and on behalf of the other
Partners (as  hereinafter  defined).  Capitalized  terms used but not  otherwise
defined  herein shall have the  meanings  given to such terms in the Amended and
Restated  Agreement  of  Limited  Partnership  of the  Partnership,  dated as of
November 17, 1997, by and among PGRT and the other parties signatory thereto, as
amended thereafter (as so amended, the "Limited Partnership Agreement").

                              W I T N E S S E T H:

         WHEREAS,   pursuant  to  Section  4.3.C.  of  the  Limited  Partnership
Agreement,  the  Managing  General  Partner  may  raise  all or any  portion  of
Additional  Funds required by the  Partnership for the acquisition of additional
properties by accepting additional Capital Contributions, including the issuance
of Common Units for Capital  Contributions that consist of property or interests
in property;

         WHEREAS,  pursuant  to that  certain  Exchange  Agreement  dated  as of
December  15,  1997 by and  between H Group LLC, a  Delaware  limited  liability
company ("HG"), and the Partnership (the "Exchange Agreement"), HG agreed, among
other  things,  to grant to the  Partnership  an option (the "First  Option") to
exchange  the  Underlying  Option (as  defined in the  Exchange  Agreement)  for
220,000 Common Units of Limited Partner Interest (subject to adjustment pursuant
to the  terms  of the  Exchange  Agreement),  which  grant of the  First  Option
contemplated  the  transfer by the  Partnership  to HG of 5,000  Common Units of
Limited  Partner  Interest on the date thereof and,  subject to the terms of the
First  Option,  5,000  Common  Units of Limited  Partner  Interest  (subject  to
adjustment  pursuant to the terms of the Exchange  Agreement) on the 15th day of
each month thereafter (each such transfer a "First Option Maintenance Transfer")
for such number of months set forth in the Exchange Agreement;

         WHEREAS,  the Partnership has agreed to the terms of the grant by HG of
the First Option set forth in the Exchange  Agreement  and desires to effect the
First Option Maintenance Transfer due on May 15, 1998;

         WHEREAS,  HG was admitted to the  Partnership  as an Additional Limited
Partner  as  of  December 15, 1997  pursuant  to  Amendment No. 2 to the Limited
Partnership Agreement;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to reflect the increase in outstanding  Common Units resulting from the issuance
of Common Units to HG in connection with the First Option  Maintenance  Transfer
due on May 15, 1998;






                                      -1-
<PAGE>
         WHEREAS,  on March 31, 1998,  (i) 10,000 Common Shares were issued in a
grant to William  M.  Karnes  pursuant  to the terms of Mr.  Karnes'  employment
agreement  with PGRT and (ii)  2,500  Common  Shares  were  issued in a grant to
Stephen J. Nardi pursuant to the terms of Mr. Nardi's consulting  agreement with
PGRT (such 2,500 Common Shares,  together with the 10,000 Common Shares referred
to in clause (i) of this sentence,  are  collectively  referred to herein as the
"Grant Shares");

         WHEREAS,  for purposes of the Grant Shares, PGRT will be deemed to have
compensated Messrs.  Karnes and Nardi in cash, that Messrs.  Karnes and Nardi in
turn paid cash for the Grant Shares and that PGRT then  contributed such cash to
the Partnership in exchange for Common Units corresponding to the Grant Shares;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to reflect the increase in outstanding  Common Units as a result of the issuance
of 12,500 Common Units to PGRT in connection with the issuance and grant by PGRT
of the Grant Shares to the Purchasers; and

         WHEREAS,  Sections  2.4 and 12.3 of the Limited  Partnership  Agreement
authorizes, among other things, the Managing General Partner, as true and lawful
agent and attorney-in fact, to execute, swear to, acknowledge, deliver, file and
record this  Amendment  on behalf of each  Partner that has executed the Limited
Partnership Agreement and on behalf of the Partnership.

         NOW, THEREFORE,  for good and adequate  consideration,  the receipt and
sufficiency  of which are  hereby  acknowledged,  the  parties  hereto  agree as
follows:

         Section 1.    ACCEPTANCE OF CAPITAL CONTRIBUTION IN EXCHANGE FOR COMMON
UNITS.  (a)  PGRT, as Managing General Partner and on behalf of the Partnership,
hereby accepts the grant of the rights consisting of the First Option during the
sixth month of the term of the First  Option  from HG as a Capital  Contribution
having a value on the date  hereof of  $100,000,  in exchange  for 5,000  Common
Units of Limited Partner  Interest which are hereby issued by the Partnership to
HG pursuant to Section 4.3.C. of the Limited  Partnership  Agreement,  and which
are evidenced by Common Unit Certificate No. 29 of the Partnership.

              (b)  Each of the Common Units of Limited  Partner  Interest issued
to HG pursuant to this SECTION 1 shall have the same terms and provisions of the
Common Units of Limited  Partner  Interest issued by the Partnership on November
17, 1997 except that (i) the Exchange Rights  relating  thereto may be exercised
at any time after  December  15, 1998 (as opposed to November 17, 1998) and (ii)
such  Common  Units  of  Limited  Partner   Interest  will  be  subject  to  the
Registration  Rights  Agreement dated as of December 15, 1997 by and among PGRT,
the Partnership and HG as opposed to the Registration  Rights Agreement  entered
into by PGRT and the  Partnership  on November  17,  1997.

         Section 2.  ISSUANCE OF COMMON UNITS CORRESPONDING TO THE GRANT SHARES.
The  Partnership  hereby issues,  effective as of March 31, 1998,  12,500 Common
Units of General Partner  Interest to PGRT,  which shall correspond to the Grant
Shares.  Such Common Units of General  Partner  Interest issued pursuant to this
SECTION 2 shall not be evidenced by a Common Unit  certificate  unless hereafter
requested by PGRT.





                                      -2-
<PAGE>
         Section 3. AMENDMENT OF EXHIBIT A TO THE LIMITED PARTNERSHIP AGREEMENT.
Exhibit A to the Limited Partnership Agreement is hereby amended and restated to
reflect the  aforementioned  change(s) by deleting Exhibit A attached thereto in
its entirety, and by attaching in lieu thereof a replacement exhibit in the form
of  EXHIBIT  A  attached  hereto.  From  and  after  the  effectiveness  of this
Amendment,  the amended and restated EXHIBIT A attached hereto shall be the only
EXHIBIT A to the Limited Partnership Agreement, unless and until it is hereafter
further amended.

         Section 4.   REFERENCE TO AND EFFECT ON THE LIMITED PARTNERSHIP
AGREEMENT.

              A.   The  Limited  Partnership  Agreement  is hereby  deemed to be
amended  to the extent  necessary  to effect the  matters  contemplated  by this
Amendment.  Except as specifically  provided for hereinabove,  the provisions of
the Limited Partnership Agreement shall remain in full force and effect.

              B.   The  execution,  delivery and effectiveness of this Amendment
shall not operate (i) as a waiver of any  provision,  right or obligation of the
Managing General Partner, the other General Partner or any Limited Partner under
the Limited  Partnership  Agreement  except as specifically  set forth herein or
(ii) as a waiver or consent to any subsequent action or transaction.

         Section 5.   APPLICABLE  LAW.  This  Amendment  shall be  construed  in
accordance  with and  governed  by the laws of the  State of  Delaware,  without
regard to the principles of conflicts of law.

                            [signature page follows]






























                                      -3-
<PAGE>
                                  AMENDMENT NO. 8 TO AMENDED AND RESTATED
                                  AGREEMENT OF LIMITED PARTNERSHIP OF PRIME
                                  GROUP REALTY, L.P.

         IN WITNESS WHEREOF,  the parties hereto have executed this Amendment as
of the date first written above.

                                       MANAGING GENERAL PARTNER:
                                       -------------------------

                                       PRIME GROUP REALTY TRUST, a
                                       Maryland real estate investment trust

                                       By: /s/ William M. Karnes
                                          ----------------------

                                       Name:  William M. Karnes

                                       Title: Executive Vice President

                                       LIMITED PARTNERS:
                                       -----------------

                                       Each Limited Partner hereby executes
                                       this Amendment to the Limited
                                       Partnership Agreement.

                                       By:      PRIME GROUP REALTY TRUST, a
                                                Maryland real estate investment
                                                trust, as attorney-in fact

                                       By: /s/ William M. Karnes
                                          ----------------------

                                                Name: William M. Karnes

                                                Title: Executive Vice President





















                                      -4-
<PAGE>
                                   EXHIBIT A*/

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS


                                        Number of                  Capital
Managing General Partner              Common Units              Contribution
- ------------------------          --------------------      --------------------

Prime Group Realty Trust               15,572,494                    **/
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman

General Partner
- ---------------

The Nardi Group, L.L.C                   927,100                 $18,542,000
      c/o Stephen J. Nardi
      4100 Madison Street
      Hillside, IL  60162

Limited Partners
- ----------------

Edward S. Hadesman                       388,677                 $7,773,540
Trust Dated May 22, 1992
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Grandville/Northwestern                   9,750                   $195,000
Management Corporation
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Carolyn B. Hadesman                      54,544                  $1,090,880
Trust Dated May 21, 1992
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614







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

*/    As amended by Amendment No. 8 to the Amended and Restated Agreement of
      Limited Partnership of Prime Group Realty, L.P.

**/   This amount shall be inserted by the Managing General Partner.

                                      -1-
<PAGE>
                                        Number of                  Capital
Limited Partners (Cont'd)             Common Units              Contribution
- -------------------------         --------------------      --------------------

Lisa Hadesman 1991 Trust                 169,053                 $3,381,060
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Cynthia Hadesman 1991 Trust              169,053                 $3,381,060
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Tucker B. Magid                          33,085                   $661,700
      545 Ridge Road
      Highland Park, IL  60035

Frances S. Shubert                       28,805                   $576,100
      511 Lynn Terrace
      Waukegan, IL  60085

Grandville Road Property, Inc.            7,201                   $144,020
      c/o Ms. Frances S. Shubert
      511 Lynn Terrace
      Waukegan, IL  60085

Sky Harbor Associates                    62,149                  $1,242,980
      c/o Howard I. Bernstein
      6541 North Kilbourn
      Lincolnwood, IL  60646

Jeffrey A. Patterson                     110,000                 $2,200,000
      c/o Prime Group Realty Trust
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601

Primestone Investment Partners, L.P.    7,944,893                    **/
      c/o The Prime Group, Inc.
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Paul A. Roehri










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

**/   This amount shall be inserted by the Managing General Partner.

                                      -2-
<PAGE>
                                        Number of                  Capital
Limited Partners (Cont'd)             Common Units              Contribution
- -------------------------         --------------------      --------------------

Prime Group Limited Partnership          47,525                   $950,500
      c/o The Prime Group, Inc.
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Michael W. Reshcke
             Robert J. Rudnik

H Group LLC                              281,572                 $5,500,000
      c/o Heitman Financial Ltd.
      180 N. LaSalle
      Suite 3600
      Chicago, IL  60601
      Attn:  Norman Perlmutter

Ray R. Grinvalds                          5,216                   $104,320
      217 Deer Valley Drive
      Barrington, IL  60010

Warren H. John                           37,259                   $745,180
      1730 N. Clark Street
      Chicago, IL  60614
































                                      -3-
<PAGE>
                               EXHIBIT A - CONT'D

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS


                                  Number of Convertible            Capital
Managing General Partner             Preferred Units            Contribution
- ------------------------          --------------------      --------------------

Prime Group Realty Trust                2,000,000                    **/
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman





































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

**/   This amount shall be inserted by the Managing General Partner.

                                       -4-

<PAGE>
                     AMENDMENT NO. 9 TO AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                           OF PRIME GROUP REALTY, L.P.

         This  AMENDMENT  NO. 9 TO AMENDED  AND  RESTATED  AGREEMENT  OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of June 5,
1998 by Prime  Group  Realty  Trust,  a Maryland  real estate  investment  trust
("PGRT"),  as the  Managing  General  Partner of Prime  Group  Realty,  L.P.,  a
Delaware  limited  partnership (the  "Partnership"),  and on behalf of the other
Partners (as  hereinafter  defined).  Capitalized  terms used but not  otherwise
defined  herein shall have the  meanings  given to such terms in the Amended and
Restated  Agreement  of  Limited  Partnership  of the  Partnership,  dated as of
November 17, 1997, by and among PGRT and the other parties signatory thereto, as
amended thereafter (as so amended, the "Limited Partnership Agreement").

                              W I T N E S S E T H:

         WHEREAS,  on the date hereof, PGRT has issued and sold 4,000,000 of its
9% Series B Cumulative  Redeemable Preferred Shares of Beneficial Interest,  par
value $0.01 per share (the "Redeemable  Preferred Shares"),  to the underwriters
(the "Underwriters")  identified in that certain Underwriting  Agreement,  dated
May 29, 1998,  among Prudential  Securities  Incorporated,  Bear,  Stearns & Co.
Inc.,  Friedman,   Billings,  Ramsey  &  Co.,  Inc.,  Legg  Mason  Wood  Walker,
Incorporated  and  Morgan  Keegan & Company,  Inc.,  as  Representatives  of the
Underwriters, PGRT and the Partnership;

         WHEREAS,   pursuant  to  Section  4.3.D.  of  the  Limited  Partnership
Agreement, (i) PGRT has made a Capital Contribution of the net proceeds from the
issuance and sale of the Redeemable  Preferred Shares to the  Underwriters,  and
(ii)  PGRT  in  turn  shall  receive  from  the   Partnership   Preferred  Units
corresponding  to such Shares,  which  Preferred  Units (the "Series B Preferred
Units")  shall  have the same  terms and  conditions  as are  applicable  to the
Redeemable Preferred Shares;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to  reflect  the  issuance  of  4,000,000  Series B  Preferred  Units to PGRT in
connection with PGRT's issuance and sale of the Redeemable  Preferred  Shares to
the Underwriters; and

         WHEREAS,  Section 2.4 of the Limited Partnership  Agreement authorizes,
among other things,  the Managing General Partner,  as true and lawful agent and
attorney-in-fact,  to execute,  swear to, acknowledge,  deliver, file and record
this  Amendment  on  behalf  of each  Partner  that  has  executed  the  Limited
Partnership Agreement and on behalf of the Partnership.

         NOW, THEREFORE,  for good and adequate  consideration,  the receipt and
sufficiency  of which are  hereby  acknowledged,  the  parties  hereto  agree as
follows:








                                      -1-
<PAGE>
         Section 1.     ISSUANCE OF SERIES B PREFERRED UNITS PURSUANT TO
SECTION  4.3.D.  OF THE LIMITED  PARTNERSHIP  AGREEMENT.  The net proceeds  from
PGRT's issuance and sale of the Redeemable  Preferred Shares to the Underwriters
have been received by the Partnership as a Capital  Contribution  from PGRT. The
Partnership  hereby issues 4,000,000 Series B Preferred Units of General Partner
Interest  to  PGRT,  pursuant  to  Section  4.3.D.  of the  Limited  Partnership
Agreement,  which Series B Preferred  Units shall  correspond to the  Redeemable
Preferred  Shares and shall have the same terms and conditions as are applicable
to the Redeemable Preferred Shares,  including without limitation,  the same (i)
distribution  or dividend rate,  (ii)  distribution  or dividend  payment dates,
(iii)  distribution or dividend priority and (iv) liquidation  preference as are
applicable to the Redeemable  Preferred Shares, and the Series B Preferred Units
shall  have the  same  relative  rights  and  preferences  with  respect  to the
outstanding  Common  Units  and  Preferred  Units  (which  correspond  to PGRT's
outstanding 7% Series A Cumulative  Convertible  Redeemable  Preferred Shares of
Beneficial  Interest (the  "Convertible  Preferred  Shares")) as the  Redeemable
Preferred  Shares  bear to PGRT's  outstanding  Common  Shares  and  Convertible
Preferred Shares.  Such Series B Preferred Units issued pursuant to this SECTION
1 shall  not be  evidenced  by a  Series B  Preferred  Unit  certificate  unless
hereafter requested by PGRT.

         Section 2.     AMENDMENT OF EXHIBIT A TO LIMITED PARTNERSHIP AGREEMENT.
EXHIBIT A to the Limited Partnership Agreement is hereby amended and restated to
reflect the  aforementioned  change(s) by deleting Exhibit A attached thereto in
its entirety, and by attaching in lieu thereof a replacement exhibit in the form
of  EXHIBIT  A  attached  hereto.  From  and  after  the  effectiveness  of this
Amendment,  the amended and restated EXHIBIT A attached hereto shall be the only
EXHIBIT A to the Limited Partnership Agreement, unless and until it is hereafter
further amended.

         Section 3.     REFERENCE TO AND EFFECT ON THE LIMITED PARTNERSHIP
AGREEMENT.

              A.   The Limited Partnership  Agreement is hereby deemed to be
amended  to the extent  necessary  to effect the  matters  contemplated  by this
Amendment.  Except as specifically  provided for hereinabove,  the provisions of
the Limited Partnership Agreement shall remain in full force and effect.

             B.    The execution,  delivery and  effectiveness of this Amendment
shall not operate (i) as a waiver of any  provision,  right or obligation of the
Managing General Partner, the other General Partner or any Limited Partner under
the Limited  Partnership  Agreement  except as specifically  set forth herein or
(ii) as a waiver or consent to any subsequent action or transaction.

         Section 4.     APPLICABLE  LAW.  This  Amendment  shall be construed in
accordance  with and  governed  by the laws of the  State of  Delaware,  without
regard to the principles of conflicts of law.

                            [signature page follows]









                                      -2-
<PAGE>
                                   AMENDMENT NO. 9 TO AMENDED AND RESTATED
                                   AGREEMENT OF LIMITED PARTNERSHIP OF PRIME
                                   GROUP REALTY, L.P.

         IN WITNESS WHEREOF,  the parties hereto have executed this Amendment as
of the date first written above.

                                        MANAGING GENERAL PARTNER:
                                        -------------------------

                                        PRIME GROUP REALTY TRUST, a
                                        Maryland real estate investment trust

                                        By: /s/ William M. Karnes
                                           ----------------------

                                        Name:  William M. Karnes

                                        Title: Executive Vice President

                                        LIMITED PARTNERS:
                                        -----------------

                                        Each Limited Partner hereby executes
                                        this Amendment to the Limited
                                        Partnership Agreement.

                                        By:      PRIME GROUP REALTY TRUST, a
                                                 Maryland real estate investment
                                                 trust, as attorney-in-fact

                                                 By: /s/ William M. Karnes
                                                    ----------------------

                                                 Name: William M. Karnes
                                                 Its:  Executive Vice President






















                                      -3-
<PAGE>
                                   EXHIBIT A*/

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS


                                        Number of                  Capital
Managing General Partner              Common Units              Contribution
- ------------------------          --------------------      --------------------

Prime Group Realty Trust               15,572,494                    **/
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman

General Partner
- ---------------

The Nardi Group, L.L.C                   927,100                 $18,542,000
      c/o Stephen J. Nardi
      4100 Madison Street
      Hillside, IL  60162

Limited Partners
- ----------------

Edward S. Hadesman                       388,677                 $7,773,540
Trust Dated May 22, 1992
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Grandville/Northwestern                   9,750                   $195,000
Management Corporation
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Carolyn B. Hadesman                      54,544                  $1,090,880
Trust Dated May 21, 1992
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614








- --------------------
*/    As amended by Amendment No. 9 to the Amended and Restated Agreement of
      Limited Partnership of Prime Group Realty, L.P.

**/   This amount shall be inserted by the Managing General Partner.

                                      -1-
<PAGE>
                                        Number of                  Capital
Limited Partners (Cont'd)             Common Units              Contribution
- -------------------------         --------------------      --------------------

Lisa Hadesman 1991 Trust                 169,053                 $3,381,060
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Cynthia Hadesman 1991 Trust              169,053                 $3,381,060
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Tucker B. Magid                          33,085                   $661,700
      545 Ridge Road
      Highland Park, IL  60035

Frances S. Shubert                       28,805                   $576,100
      511 Lynn Terrace
      Waukegan, IL  60085

Grandville Road Property, Inc.            7,201                   $144,020
      c/o Ms. Frances S. Shubert
      511 Lynn Terrace
      Waukegan, IL  60085

Sky Harbor Associates                    62,149                  $1,242,980
      c/o Howard I. Bernstein
      6541 North Kilbourn
      Lincolnwood, IL  60646

Jeffrey A. Patterson                     110,000                 $2,200,000
      c/o Prime Group Realty Trust
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601

Primestone Investment Partners, L.P.    7,944,893                    **/
      c/o The Prime Group, Inc.
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Paul A. Roehri










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

**/   This amount shall be inserted by the Managing General Partner.

                                      -2-
<PAGE>
                                        Number of                  Capital
Limited Partners (Cont'd)             Common Units              Contribution
- -------------------------         --------------------      --------------------

Prime Group Limited Partnership          47,525                   $950,500
      c/o The Prime Group, Inc.
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Michael W. Reshcke
             Robert J. Rudnik

H Group LLC                              281,572                 $5,500,000
      c/o Heitman Financial Ltd.
      180 N. LaSalle
      Suite 3600
      Chicago, IL  60601
      Attn:  Norman Perlmutter

Ray R. Grinvalds                          5,216                   $104,320
      217 Deer Valley Drive
      Barrington, IL  60010

Warren H. John                           37,259                   $745,180
      1730 N. Clark Street
      Chicago, IL  60614
































                                      -3-
<PAGE>
                               EXHIBIT A - CONT'D

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS


                                        Number of                  Capital
Managing General Partner             Preferred Units            Contribution
- ------------------------          --------------------      --------------------

Prime Group Realty Trust                2,000,000                    **/
      77 West Wacker Drive        Convertible Preferred
      Suite 3900                          Units
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman

Prime Group Realty Trust                4,000,000                    **/
      77 West Wacker Drive         Series B Preferred
      Suite 3900                          Units
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman
































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

**/   This amount shall be inserted by the Managing General Partner.

                                      -4-

<PAGE>
                    AMENDMENT NO. 10 TO AMENDED AND RESTATED

                        AGREEMENT OF LIMITED PARTNERSHIP

                           OF PRIME GROUP REALTY, L.P.

         This  AMENDMENT  NO. 10 TO AMENDED AND  RESTATED  AGREEMENT  OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY,  L.P. (this  "Amendment")  is made as of June
15, 1998 by Prime Group Realty Trust,  a Maryland real estate  investment  trust
("PGRT"),  as the  Managing  General  Partner of Prime  Group  Realty,  L.P.,  a
Delaware  limited  partnership (the  "Partnership"),  and on behalf of the other
Partners (as  hereinafter  defined).  Capitalized  terms used but not  otherwise
defined  herein shall have the  meanings  given to such terms in the Amended and
Restated  Agreement  of  Limited  Partnership  of the  Partnership,  dated as of
November 17, 1997, by and among PGRT and the other parties signatory thereto, as
amended thereafter (as so amended, the "Limited Partnership Agreement").

                              W I T N E S S E T H:

         WHEREAS,   pursuant  to  Section  4.3.C.  of  the  Limited  Partnership
Agreement,  the  Managing  General  Partner  may  raise  all or any  portion  of
Additional  Funds required by the  Partnership for the acquisition of additional
properties by accepting additional Capital Contributions, including the issuance
of Common Units for Capital  Contributions that consist of property or interests
in property;

         WHEREAS,  pursuant  to that  certain  Exchange  Agreement  dated  as of
December  15,  1997 by and  between H Group LLC, a  Delaware  limited  liability
company ("HG"), and the Partnership (the "Exchange Agreement"), HG agreed, among
other  things,  to grant to the  Partnership  an option (the "First  Option") to
exchange  the  Underlying  Option (as  defined in the  Exchange  Agreement)  for
220,000 Common Units of Limited Partner Interest (subject to adjustment pursuant
to the  terms  of the  Exchange  Agreement),  which  grant of the  First  Option
contemplated  the  transfer by the  Partnership  to HG of 5,000  Common Units of
Limited  Partner  Interest on the date thereof and,  subject to the terms of the
First  Option,  5,000  Common  Units of Limited  Partner  Interest  (subject  to
adjustment  pursuant to the terms of the Exchange  Agreement) on the 15th day of
each month thereafter (each such transfer a "First Option Maintenance Transfer")
for such number of months set forth in the Exchange Agreement;

         WHEREAS,  the Partnership has agreed to the terms of the grant by HG of
the First Option set forth in the Exchange  Agreement  and desires to effect the
First Option Maintenance Transfer due on June 15, 1998;

         WHEREAS,  HG was admitted to the Partnership as an  Additional  Limited
Partner as of December  15,  1997  pursuant  to  Amendment  No. 2 to the Limited
Partnership Agreement;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to reflect the increase in outstanding  Common Units resulting from the issuance
of Common Units to HG in connection with the First Option  Maintenance  Transfer
due on June 15, 1998; and






                                      -1-
<PAGE>
         WHEREAS,  Sections  2.4 and 12.3 of the Limited  Partnership  Agreement
authorize,  among other things, the Managing General Partner, as true and lawful
agent and attorney-in fact, to execute, swear to, acknowledge, deliver, file and
record this  Amendment  on behalf of each  Partner that has executed the Limited
Partnership Agreement and on behalf of the Partnership.

         NOW, THEREFORE,  for good and adequate  consideration,  the receipt and
sufficiency  of which are  hereby  acknowledged,  the  parties  hereto  agree as
follows:

         Section 1.     ACCEPTANCE OF CAPITAL  CONTRIBUTION IN EXCHANGE FOR
COMMON  UNITS.  (a)  PGRT,  as  Managing  General  Partner  and on behalf of the
Partnership,  hereby  accepts  the grant of the rights  consisting  of the First
Option  during the  seventh  month of the term of the First  Option from HG as a
Capital Contribution having a value on the date hereof of $100,000,  in exchange
for 5,000 Common Units of Limited  Partner  Interest  which are hereby issued by
the  Partnership  to HG pursuant to Section  4.3.C.  of the Limited  Partnership
Agreement,  and which are  evidenced  by Common Unit  Certificate  No. 30 of the
Partnership.

              (b)  Each  of the  Common  Units  of  Limited  Partner Interest
issued to HG pursuant to this SECTION 1 shall have the same terms and provisions
of the Common Units of Limited  Partner  Interest  issued by the  Partnership on
November 17, 1997 except that (i) the Exchange  Rights  relating  thereto may be
exercised at any time after  December 15, 1998 (as opposed to November 17, 1998)
and (ii) such Common Units of Limited  Partner  Interest  will be subject to the
Registration  Rights  Agreement dated as of December 15, 1997 by and among PGRT,
the Partnership and HG as opposed to the Registration  Rights Agreement  entered
into by PGRT and the Partnership on November 17, 1997.

         Section 2.     AMENDMENT OF EXHIBIT A TO THE LIMITED  PARTNERSHIP
AGREEMENT.  Exhibit A to the Limited Partnership Agreement is hereby amended and
restated to reflect the aforementioned  change(s) by deleting exhibit A attached
thereto in its entirety,  and by attaching in lieu thereof a replacement exhibit
in the form of EXHIBIT A attached  hereto.  From and after the  effectiveness of
this Amendment,  the amended and restated EXHIBIT A attached hereto shall be the
only  exhibit A to the  Limited  Partnership  Agreement,  unless and until it is
hereafter further amended.

         Section 3.     REFERENCE TO AND EFFECT ON THE LIMITED PARTNERSHIP
AGREEMENT.

              A.   The Limited Partnership  Agreement is hereby deemed to be
amended  to the extent  necessary  to effect the  matters  contemplated  by this
Amendment.  Except as specifically  provided for hereinabove,  the provisions of
the Limited Partnership Agreement shall remain in full force and effect.

              B.   The execution,  delivery and  effectiveness of this Amendment
shall not operate (i) as a waiver of any  provision,  right or obligation of the
Managing General Partner, the other General Partner or any Limited Partner under
the Limited  Partnership  Agreement  except as specifically  set forth herein or
(ii) as a waiver or consent to any subsequent action or transaction.

         Section 4.     APPLICABLE  LAW. This  Amendment  shall be construed in 
accordance  with and  governed  by the laws of the  State of  Delaware,  without
regard to the principles of conflicts of law.

                            [signature page follows]
                                     -2-
<PAGE>
                                  AMENDMENT NO. 10 TO AMENDED AND RESTATED
                                  AGREEMENT OF LIMITED PARTNERSHIP OF PRIME
                                  GROUP REALTY, L.P.

         IN WITNESS WHEREOF,  the parties hereto have executed this Amendment as
of the date first written above.

                                        MANAGING GENERAL PARTNER:
                                        -------------------------

                                        PRIME GROUP REALTY TRUST, a
                                        Maryland real estate investment trust

                                        By:/s/ Jeffrey A. Patterson
                                           ------------------------

                                        Name: Jeffrey A. Patterson

                                        Title: Executive Vice President

                                        LIMITED PARTNERS:
                                        -----------------

                                        Each Limited Partner hereby executes
                                        this Amendment to the Limited
                                        Partnership Agreement.

                                        By:      PRIME GROUP REALTY TRUST, a
                                                 Maryland real estate investment
                                                 trust, as attorney-in fact

                                                 By:/s/ Jeffrey A. Patterson
                                                    ------------------------

                                                 Name:Jeffrey A. Patterson

                                                 Title:Executive Vice President





















                                      -3-
<PAGE>
                                   EXHIBIT A*/

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS


                                        Number of                  Capital
Managing General Partner              Common Units              Contribution
- ------------------------          --------------------      --------------------

Prime Group Realty Trust               15,572,494                    **/
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman

General Partner
- ---------------

The Nardi Group, L.L.C                   927,100                 $18,542,000
      c/o Stephen J. Nardi
      4100 Madison Street
      Hillside, IL  60162

Limited Partners
- ----------------

Edward S. Hadesman                       388,677                 $7,773,540
Trust Dated May 22, 1992
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Grandville/Northwestern                   9,750                   $195,000
Management Corporation
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Carolyn B. Hadesman                      54,544                  $1,090,880
Trust Dated May 21, 1992
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614








- --------------------
*/    As amended by Amendment No. 10 to the Amended and Restated Agreement of
      Limited Partnership of Prime Group Realty, L.P.

**/   This amount shall be inserted by the Managing General Partner.

                                      -1-
<PAGE>
                                        Number of                  Capital
Limited Partners (Cont'd)             Common Units              Contribution
- -------------------------         --------------------      --------------------

Lisa Hadesman 1991 Trust                 169,053                 $3,381,060
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Cynthia Hadesman 1991 Trust              169,053                 $3,381,060
      c/o Edward S. Hadesman
      2500 North Lakeview, Unit 1401
      Chicago, IL  60614

Tucker B. Magid                          33,085                   $661,700
      545 Ridge Road
      Highland Park, IL  60035

Frances S. Shubert                       28,805                   $576,100
      511 Lynn Terrace
      Waukegan, IL  60085

Grandville Road Property, Inc.            7,201                   $144,020
      c/o Ms. Frances S. Shubert
      511 Lynn Terrace
      Waukegan, IL  60085

Sky Harbor Associates                    62,149                  $1,242,980
      c/o Howard I. Bernstein
      6541 North Kilbourn
      Lincolnwood, IL  60646

Jeffrey A. Patterson                     110,000                 $2,200,000
      c/o Prime Group Realty Trust
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601

Primestone Investment Partners, L.P.    7,944,893                    **/
      c/o The Prime Group, Inc.
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Paul A. Roehri










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

**/   This amount shall be inserted by the Managing General Partner.

                                      -2-
<PAGE>
                                        Number of                  Capital
Limited Partners (Cont'd)             Common Units              Contribution
- -------------------------         --------------------      --------------------

Prime Group Limited Partnership          47,525                   $950,500
      c/o The Prime Group, Inc.
      77 West Wacker Drive
      Suite 3900
      Chicago, IL  60601
      Attn:  Michael W. Reshcke
             Robert J. Rudnik

H Group LLC                              286,572                 $5,500,000
      c/o Heitman Financial Ltd.
      180 N. LaSalle
      Suite 3600
      Chicago, IL  60601
      Attn:  Norman Perlmutter

Ray R. Grinvalds                          5,216                   $104,320
      217 Deer Valley Drive
      Barrington, IL  60010

Warren H. John                           37,259                   $745,180
      1730 N. Clark Street
      Chicago, IL  60614
































                                     -3-
<PAGE>
                               EXHIBIT A - CONT'D

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS


                                        Number of                  Capital
Managing General Partner             Preferred Units            Contribution
- ------------------------          --------------------      --------------------
Prime Group Realty Trust                2,000,000                    **/
      77 West Wacker Drive        Convertible Preferred
      Suite 3900                          Units
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman

Prime Group Realty Trust                4,000,000                    **/
      77 West Wacker Drive         Series B Preferred
      Suite 3900                          Units
      Chicago, IL  60601
      Attn:  Richard S. Curto
             James F. Hoffman

































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

**/   This amount shall be inserted by the Managing General Partner.
                                      -4-

<PAGE>
                            PRIME GROUP REALTY TRUST

================================================================================

                             Articles Supplementary
                     Classifying and Designating a Series of
                   Preferred Shares of Beneficial Interest as
                        9% Series B Cumulative Redeemable
                   Preferred Shares of Beneficial Interest and
                    Fixing Distribution and Other Preferences
                            and Rights of Such Series

================================================================================

         Prime Group Realty Trust, a Maryland real estate  investment trust (the
"Trust"),  hereby  certifies to the State Department of Assessments and Taxation
of Maryland pursuant to section 8-203(b) of the Annotated Code of Maryland that:

         FIRST:  Pursuant to  authority  granted to the Board of Trustees of the
Trust by the  Amended  and  Restated  Declaration  of Trust  of the  Trust  (the
"Declaration"),  the Board of Trustees has designated  and classified  4,600,000
unissued preferred shares of beneficial interest,  par value $0.01 per share, as
9% Series B Cumulative  Redeemable Preferred Shares of Beneficial Interest,  par
value $0.01 per share, and authorizing the issuance thereof.

         SECOND:  The following is a  description  of the 9% Series B Cumulative
Redeemable  Preferred Shares of Beneficial  Interest,  including the preferences
and other rights,  voting  powers,  restrictions,  limitations  as to dividends,
qualifications, and terms and conditions of redemption thereof:

         Section 1.    NUMBER OF SHARES AND  DESIGNATION.  This class of
preferred  shares of  beneficial  interest  shall be  designated as "9% Series B
Cumulative Redeemable Preferred Shares of Beneficial Interest" and the number of
shares which shall constitute such series shall be 4,600,000 shares which number
may be decreased (but not below the aggregate  number  thereof then  outstanding
and/or which have been reserved for issuance)  from time to time by the Board of
Trustees.

         Section 2.     DEFINITIONS.  For purposes of the Series B Preferred
Shares (as  hereinafter  defined),  the following  terms shall have the meanings
indicated:

                  "BOARD OF  TRUSTEES"  shall mean the Board of  Trustees of the
         Trust or any committee  authorized by such Board of Trustees to perform
         any of its  responsibilities  with  respect to the  Series B  Preferred
         Shares.

                  "BUSINESS  DAY" shall mean any day,  other than a Saturday  or
         Sunday,  that is  neither a legal  holiday  nor a day on which  banking
         institutions  in New York City,  New York are authorized or required by
         law, regulation or executive order to close.

                  "COMMON  SHARES"  shall mean the Common  Shares of  Beneficial
         Interest, par value $0.01 per share, of the Trust.

                  "OPERATING PARTNERSHIP" shall mean Prime Group Realty, L.P., a
         Delaware limited partnership.

                                      -1-
<PAGE>
                  "SECURITIES ACT" shall mean the Securities Act of 1933, as
        amended.

                  "SERIES A PREFERRED SHARES" shall mean the Trust's outstanding
         7%  Series A  Cumulative  Convertible  Redeemable  Preferred  Shares of
         Beneficial Interest, par value $0.01 per share.

                  "SERIES B CALL  DATE"  shall  mean the date  specified  in the
         notice to  holders  required  under  SECTION  5(d) as the Series B Call
         Date.

                  "SERIES  B  DIVIDEND   PAYMENT   DATE"   shall  mean  (i)  the
         thirty-first  day of each January with respect to the Series B Dividend
         Period commencing on October 1 of the then immediately  preceding year,
         (ii) the  thirtieth  day of each  April  with  respect  to the Series B
         Dividend  Period  commencing  on  January  1 of  such  year,  (ii)  the
         thirty-first  day of each July with  respect  to the  Series B Dividend
         Period commencing on April 1 of such year and (iv) the thirty-first day
         of each October with respect to the Series B Dividend Period commencing
         on July 1 of such year.

                  "SERIES B  DIVIDEND  PERIODS"  shall mean  quarterly  dividend
         periods  commencing on January 1, April 1, July 1 and October 1 of each
         year and ending on and including the day preceding the first day of the
         next  succeeding  Series B Dividend Period with respect to any Series B
         Preferred  Shares  (other  than the initial  Series B Dividend  Period,
         which shall  commence on the Series B Issue Date and end on and include
         the last day of the calendar quarter immediately  following such Series
         B Issue Date, and other than the Series B Dividend  Period during which
         any Series B Preferred Shares shall be redeemed  pursuant to SECTION 5,
         which shall end on and  include the Series B Call Date with  respect to
         the Series B Preferred Shares being redeemed).

                  "SERIES B FULLY JUNIOR  SHARES" shall mean the Common  Shares,
         the Series A  Preferred  Shares and any other class or series of shares
         of  beneficial  interest  of the  Trust  now or  hereafter  issued  and
         outstanding over which the Series B Preferred Shares have preference or
         priority in both (i) the payment of dividends and (ii) the distribution
         of assets on any liquidation, dissolution or winding up of the Trust.

                  "SERIES B ISSUE  DATE" shall mean the date on which the Series
         B Preferred Shares are issued.

                  "SERIES B JUNIOR  SHARES"  shall mean the Common  Shares,  the
         Series A  Preferred  Shares and any other  class or series of shares of
         beneficial   interest  of  the  Trust  now  or  hereafter   issued  and
         outstanding over which the Series B Preferred Shares have preference or
         priority in the payment of dividends or in the  distribution  of assets
         on any liquidation, dissolution or winding up of the Trust.

                  "SERIES B PARITY  SHARES"  shall have the meaning set forth in
         SECTION 6(b).

                  "SERIES B PREFERRED SHARES" shall mean the Trust's 9% Series B
         Cumulative  Redeemable  Preferred  Shares of Beneficial  Interest,  par
         value $0.01 per share.


                                      -2-
<PAGE>
                  "SERIES B VOTING PREFERRED  SHARES" shall have the meaning set
         forth in SECTION 7.

                  "SET APART FOR  PAYMENT"  shall be deemed to include,  without
         any other action,  the recording by the Trust in its accounting ledgers
         of any accounting or bookkeeping  entry which indicates,  pursuant to a
         declaration  of  dividends  or  other  distribution  by  the  Board  of
         Trustees,  the allocation of funds to be so paid on any series or class
         of shares of beneficial interest of the Trust; PROVIDED,  HOWEVER, that
         if any funds  for any class or series of Series B Junior  Shares or any
         class or series of shares of  beneficial  interest  ranking on a parity
         with the Series B Preferred  Shares as to the payment of dividends  are
         placed in a separate account of the Trust or delivered to a disbursing,
         paying or other  similar  agent,  then "set  apart  for  payment"  with
         respect to the Series B Preferred  Shares shall mean placing such funds
         in a separate account or delivering such funds to a disbursing,  paying
         or other similar agent.

                  "TRANSFER  AGENT" shall mean the Trust, or such other agent or
         agents of the Trust as may be  designated  by the Board of  Trustees or
         their designee as the transfer agent, registrar and dividend disbursing
         agent for the Series B Preferred Shares.

Capitalized  terms not otherwise  defined  herein have the meanings  ascribed to
them in the Declaration.

         Section 3.  DIVIDENDS.

                  (a)   Subject to the preferential rights of the holders of any
         Preferred  Shares  that  rank senior in the payment of dividends to the
         Series B Preferred Shares,  the  holders  of  Series B Preferred Shares
         shall be entitled to receive,  when, as and if declared by the Board of
         Trustees,  out of funds legally available for the payment of dividends,
         cumulative  preferential  dividends  payable  in cash in an amount  per
         share  equal  to an  annual  rate  of 9% of the per  share  liquidation
         preference of the Series B Preferred  Shares  (equivalent  to $2.25 per
         Series B  Preferred  Share).  The  dividends  shall begin to accrue and
         shall be fully cumulative from the first day of the applicable Series B
         Dividend  Period,  whether or not in any  Series B  Dividend  Period or
         Periods  there shall be funds of the Trust  legally  available  for the
         payment  of such  dividends  and  whether  or not  such  dividends  are
         authorized  by the Board of Trustees,  and shall be payable  quarterly,
         when, as and if declared by the Board of Trustees, in arrears on Series
         B  Dividend  Payment  Dates.  Each such  dividend  shall be  payable in
         arrears to the holders of record of Series B  Preferred  Shares as they
         appear in the  records  of the Trust at the close of  business  on such
         record  date,  not less  than 10 nor more than 50 days  preceding  such
         Series B Dividend Payment Dates thereof, as shall be fixed by the Board
         of  Trustees.  Accrued  and  unpaid  dividends  for any  past  Series B
         Dividend  Periods  may be  declared  and  paid at any time and for such
         interim  periods,  without  reference to any regular  Series B Dividend
         Payment Date,  to holders of record on such date,  not less than 10 nor
         more than 50 days  preceding the payment date thereof,  as may be fixed
         by the  Board  of  Trustees.  Any  dividend  payment  made on  Series B
         Preferred  Shares shall first be credited  against the earliest accrued
         but unpaid dividend due with respect to Series B Preferred Shares which
         remains payable.

                                      -3-
<PAGE>
                  (b)   The initial Series B Dividend Period for the Series B
         Preferred  Shares  will  include a partial dividend for the period from
         the  Series B Issue  Date  until the last day of the  calendar  quarter
         immediately following such Series B Issue Date. The amount of dividends
         payable for such period, or any other period shorter than a full Series
         B Dividend  Period,  on the Series B Preferred Shares shall be computed
         by dividing  the number of days in such  period by 365 and  multiplying
         the result by the  product  of the  annual  dividend  rate  (i.e.,  9%)
         multiplied  by the  liquidation  preference  of the Series B  Preferred
         Shares  (i.e.,  $25.00 per Series B  Preferred  Share).  The  aggregate
         amount of dividends payable in respect of the Series B Preferred Shares
         for each full  Series B Dividend  Period  shall be computed by dividing
         (x)  the  product  of  the  annual  dividend  rate  multiplied  by  the
         liquidation  preference  of the Series B  Preferred  Shares by (y) four
         (4).  Holders of Series B Preferred Shares shall not be entitled to any
         dividends,  whether payable in cash,  property or shares,  in excess of
         cumulative  dividends,  as herein  provided,  on the Series B Preferred
         Shares.  No  interest,  or sum of money in lieu of  interest,  shall be
         payable in respect of any dividend  payment or payments on the Series B
         Preferred Shares which may be in arrears.

                  (c)   So long as any  Series  B  Preferred  Shares  are
         outstanding,  no  dividends,  except as  described  in the  immediately
         following sentence,  shall be declared or paid or set apart for payment
         on any class or series of Series B Parity  Shares for any period unless
         full cumulative dividends have been or  contemporaneously  are declared
         and paid or declared and a sum sufficient  for the payment  thereof set
         apart for such payment on the Series B Preferred  Shares for all Series
         B Dividend Periods terminating on or prior to the dividend payment date
         on such class or series of Series B Parity  Shares.  When dividends are
         not paid in full or a sum sufficient for such payment is not set apart,
         as aforesaid, all dividends declared upon Series B Preferred Shares and
         all  dividends  declared  upon any  other  class or  series of Series B
         Parity Shares shall be declared ratably in proportion to the respective
         amounts of dividends  accumulated  and unpaid on the Series B Preferred
         Shares and accumulated and unpaid on such Series B Parity Shares.

                  (d)   So long as any  Series  B  Preferred  Shares  are
         outstanding,  no dividends (other than dividends or distributions  paid
         solely in shares of, or options, warrants or rights to subscribe for or
         purchase  shares of, Series B Fully Junior Shares) shall be declared or
         paid or set  apart  for  payment  or any  other  distribution  shall be
         declared or made or set apart for payment upon Series B Junior  Shares,
         nor  shall  any  Series B  Junior  Shares  be  redeemed,  purchased  or
         otherwise  acquired  (other  than  a  redemption,   purchase  or  other
         acquisition of Common Shares made for purposes of an employee incentive
         or benefit plan of the Trust or any subsidiary)  for any  consideration
         (or any moneys be paid to or made  available for a sinking fund for the
         redemption  of any Series B Junior  Shares) by the Trust,  directly  or
         indirectly  (except by  conversion  into or exchange for Series B Fully
         Junior Shares),  unless in each case (i) the full cumulative  dividends
         on all  outstanding  Series B Preferred  Shares and any other  Series B
         Parity  Shares of the Trust  shall have been or  contemporaneously  are
         declared  and paid or  declared  and set apart for payment for all past
         Series B Dividend Periods with respect to the Series B Preferred Shares
         and all past  dividend  periods  with  respect to such  Series B Parity
         Shares and (ii) sufficient  funds shall have been or  contemporaneously

                                      -4-
<PAGE>
         are  declared and paid or declared and set apart for the payment of the
         dividend for the then current Series B Dividend  Period with respect to
         the Series B Preferred Shares and the then current dividend period with
         respect to such Series B Parity Shares.

                  (e)   No distributions on Series B Preferred Shares shall be
         declared  by  the Board of Trustees or paid or set apart for payment by
         the Trust at such time as the terms and  provisions of any agreement of
         the  Trust,  including  any agreement  relating  to  its  indebtedness,
         prohibits  such  declaration,  payment or setting  apart for payment or
         provides  that such  declaration,  payment or setting apart for payment
         would constitute a breach thereof or a default  thereunder,  or if such
         declaration or payment shall be restricted or prohibited by law.

         Section 4. LIQUIDATION PREFERENCE.

                  (a)   In the event of any  liquidation,  dissolution  or
         winding up of the Trust,  whether voluntary or involuntary,  subject to
         the  prior  preferences  and other  rights  of any  series of shares of
         beneficial  interest  ranking  senior to the Series B Preferred  Shares
         upon liquidation,  distribution or winding up of the Trust,  before any
         payment or distribution of the assets of the Trust (whether  capital or
         surplus)  shall be made to or set  apart  for the  holders  of Series B
         Junior  Shares,  the holders of the Series B Preferred  Shares shall be
         entitled to receive  Twenty-Five  Dollars  ($25.00)  (the  "Liquidation
         Preference")  per Series B Preferred  Share plus an amount equal to all
         dividends  (whether  or not  earned or  declared)  accrued  and  unpaid
         thereon to the date of final  distribution  to such  holders;  but such
         holders  shall not be  entitled to any  further  payment.  If, upon any
         liquidation,  dissolution or winding up of the Trust, the assets of the
         Trust,  or  proceeds  thereof,  distributable  among the holders of the
         Series B  Preferred  Shares  shall be  insufficient  to pay in full the
         preferential  amount  aforesaid and  liquidating  payments on any other
         shares of any class or  series  of  Series B Parity  Shares,  then such
         assets, or the proceeds thereof, shall be distributed among the holders
         of Series B Preferred  Shares and any such other Series B Parity Shares
         ratably in accordance with the respective amounts that would be payable
         on such  Series B Preferred  Shares and any such other  Series B Parity
         Shares  if all  amounts  payable  thereon  were  paid in full.  For the
         purposes of this SECTION 4, (i) a consolidation  or merger of the Trust
         with one or more  corporations,  real estate investment trusts or other
         entities,  (ii) a sale, lease or conveyance of all or substantially all
         of the Trust's property or business or (iii) a statutory share exchange
         shall not be deemed to be a  liquidation,  dissolution  or winding  up,
         voluntary or involuntary, of the Trust.

                  (b)   Subject to the rights of the  holders of shares of any
         series or class or classes of shares of  beneficial interest ranking on
         a  parity   with  or  prior  to the  Series  B  Preferred  Shares  upon
         liquidation,   dissolution   or  winding  up,  upon  any   liquidation,
         dissolution  or winding up of the Trust,  after payment shall have been
         made in full to the  holders  of the  Series  B  Preferred  Shares,  as
         provided in this  SECTION 4, the  holders of Series B Preferred  Shares
         shall have no other claim to the remaining  assets of the Trust and any
         other  series  or class or  classes  of Series B Junior  Shares  shall,
         subject  to the  respective  terms  and  provisions  (if any)  applying


                                      -5-
<PAGE>
         thereto, be entitled to receive any and all assets remaining to be paid
         or distributed,  and the holders of the Series B Preferred Shares shall
         not be entitled to share therein.

         Section 5.  REDEMPTION AT THE OPTION OF THE TRUST.

                  (a)   The  Series  B  Preferred  Shares  shall  not  be
         redeemable  by the Trust  prior to June 5,  2003.  On and after June 5,
         2003,  the Trust,  at its  option,  may  redeem the Series B  Preferred
         Shares,  in whole at any time or from time to time in part out of funds
         legally available  therefor at a redemption price payable in cash equal
         to 100% of the  Liquidation  Preference  per Series B  Preferred  Share
         (plus all accumulated, accrued and unpaid dividends as provided below).
         The redemption  price of the Series B Preferred  Shares (other than any
         portion thereof  consisting of accrued and unpaid  dividends)  shall be
         paid solely from the  proceeds of the issuance and sale by the Trust of
         other capital  shares of beneficial  interest of the Trust and not from
         any other  source.  For purposes of the  preceding  sentence,  "capital
         shares of beneficial  interest" means any equity securities  (including
         Common Shares and Preferred Shares), shares, interests,  participations
         or other ownership interests (however designated) and any rights (other
         than  debt  securities  convertible  into or  exchangeable  for  equity
         securities) or options to purchase any of the foregoing.

                  (b)   Upon any  redemption  of Series B Preferred  Shares
         pursuant to this  SECTION 5, the Trust shall pay all accrued and unpaid
         dividends, if any, thereon to the Series B Call Date, without interest,
         except  that if the Series B Call Date falls  after a dividend  payment
         record date and prior to the  corresponding  Series B Dividend  Payment
         Date,  then each  holder of Series B  Preferred  Shares at the close of
         business on such dividend  payment record date shall be entitled to the
         dividend payable on such shares on the corresponding  Series B Dividend
         Payment Date  notwithstanding any redemption of such shares before such
         Series B Dividend  Payment Date.  Except as provided  above,  the Trust
         shall make no payment or allowance for unpaid dividends, whether or not
         in arrears, on Series B Preferred Shares called for redemption.

                  (c)   If full  cumulative  dividends  on the  Series  B
         Preferred  Shares  and any  other  class or  series  of Series B Parity
         Shares of the Trust have not been declared and paid or declared and set
         apart for  payment,  the Series B Preferred  Shares may not be redeemed
         under this  SECTION 5 in part and the Trust may not purchase or acquire
         Series B Preferred  Shares,  otherwise  than  pursuant to a purchase or
         exchange  offer  made on the same  terms  to all  holders  of  Series B
         Preferred Shares.

                  (d)   Notice of the  redemption of any Series B Preferred
         Shares under this SECTION 5 shall be mailed by first-class mail to each
         holder of record of Series B  Preferred  Shares to be  redeemed  at the
         address of each such holder as shown on the Trust's  records,  not less
         than 30 nor more than 90 days prior to the Series B Call Date.  Neither
         the failure to mail any notice  required by this paragraph (d), nor any
         defect therein or in the mailing  thereof,  to any  particular  holder,
         shall  affect  the  sufficiency  of the notice or the  validity  of the
         proceedings for redemption with respect to the other holders. Each such
         mailed notice shall state, as appropriate:  (1) the Series B Call Date;


                                      -6-
<PAGE>
         (2) the number of Series B  Preferred  Shares to be  redeemed  and,  if
         fewer than all the shares held by such holder are to be  redeemed,  the
         number  of  such  shares  to be  redeemed  from  such  holder;  (3) the
         redemption  price;  (4) the place or places at which  certificates  for
         such shares are to be surrendered; and (5) that dividends on the shares
         to be redeemed  shall cease to accrue on such Series B Call Date except
         as otherwise  provided herein.  Notice having been mailed as aforesaid,
         from and after the Series B Call Date  (unless  the Trust shall fail to
         make available an amount of cash necessary to effect such  redemption),
         (i) except as  otherwise  provided  herein,  dividends  on the Series B
         Preferred Shares so called for redemption  shall cease to accrue,  (ii)
         such shares shall no longer be deemed to be outstanding,  and (iii) all
         rights of the holders  thereof as holders of Series B Preferred  Shares
         of the Trust shall cease  (except the right to receive the cash payable
         upon such  redemption,  without  interest  thereon,  upon surrender and
         endorsement  of their  certificates  if so required  and to receive any
         dividends payable thereon).  The Trust's  obligation to provide cash in
         accordance with the preceding sentence shall be deemed fulfilled if, on
         or before the Series B Call Date,  the Trust shall  deposit with a bank
         or trust  company  (which may be an affiliate of the Trust) that has an
         office in the Borough of Manhattan,  City of New York, and that has, or
         is an  affiliate  of a bank or trust  company  that  has,  capital  and
         surplus of at least $50,000,000 cash, necessary for such redemption, in
         trust,  with irrevocable  instructions that such cash be applied to the
         redemption of the Series B Preferred  Shares so called for  redemption.
         No  interest  shall  accrue for the  benefit of the holders of Series B
         Preferred  Shares to be redeemed on any cash so set aside by the Trust.
         Subject to applicable  escheat laws, any such cash unclaimed at the end
         of two years from the Series B Call Date  shall  revert to the  general
         funds of the Trust, after which reversion the holders of such shares so
         called for redemption shall look only to the general funds of the Trust
         for the payment of such cash.

                  As promptly as  practicable  after the surrender in accordance
         with such  notice of the  certificates  for any such shares so redeemed
         (properly  endorsed or  assigned  for  transfer,  if the Trust shall so
         require  and if the  notice  shall  so  state),  such  shares  shall be
         exchanged for any cash (without interest thereon) for which such shares
         have  been  redeemed.  If  fewer  than  all the  outstanding  Series  B
         Preferred  Shares are to be  redeemed,  shares to be redeemed  shall be
         selected by the Trust from  outstanding  Series B Preferred  Shares not
         previously called for redemption pro rata (as nearly as may be), by lot
         or by any other method  determined by the Trust in its sole  discretion
         to be  equitable.  If fewer  than all the  Series  B  Preferred  Shares
         represented  by any  certificate  are redeemed,  then new  certificates
         representing the unredeemed  shares shall be issued without cost to the
         holder thereof.

         Section 6.  RANKING.  Any class or series of shares of beneficial
interest of the Trust shall be deemed to rank:

                  (a)   prior to the Series B Preferred Shares, as to the
         payment of dividends and as to distribution of assets upon liquidation,
         dissolution or winding up, if the holders of such class or series shall
         be  entitled  to  the  receipt of dividends or of amounts distributable
         upon  liquidation,  dissolution  or  winding up, as the case may be, in
         preference  or  priority  to  the holders of Series B Preferred Shares;

                                      -7-
<PAGE>
                  (b)   on a parity  with the Series B Preferred  Shares,  as to
         the  payment of dividends  and  as  to  distribution   of  assets  upon
         liquidation,  dissolution  or winding up,  whether  or not the dividend
         rates,  dividend  payment dates or redemption or liquidation prices per
         share  thereof shall be different  from those of the Series B Preferred
         Shares,  if  the  holders  of such  class or  series  and the  Series B
         Preferred  Shares  shall be entitled to the receipt of dividends and of
         amounts  distributable  upon liquidation,  dissolution or winding up in
         proportion  to their respective amounts of accrued and unpaid dividends
         per  share or liquidation  preferences,  without preference or priority
         one over the other ("SERIES B PARITY SHARES");

                  (c)   junior to the Series B Preferred  Shares,  as to the
         payment  of  dividends  or  as  to  the  distribution  of  assets  upon
         liquidation, dissolution or winding up, if such class or  series (which
         includes  the Series A Preferred  Shares)  shall  be  Series  B  Junior
         Shares; and

                  (d)   junior to the Series B Preferred  Shares,  as to the
         payment  of  dividends  and  as  to  the  distribution  of assets  upon
         liquidation, dissolution or winding  up, if such class or series (which
         includes the Series A Preferred Shares) shall  be Series B Fully Junior
         Shares.

         Section 7. VOTING.  If and whenever six consecutive  quarterly
dividends  payable  on the Series B  Preferred  Shares or any series or class of
Series B Parity Shares having  similar  voting rights shall be in arrears (which
shall, with respect to any such quarterly dividend,  mean that any such dividend
has not been paid in full),  whether  or not  earned or  declared,  the Board of
Trustees of the Trust shall amend the Bylaws of the Trust (unless the Bylaws had
then  been   previously   amended  to  increase  the  number  of  trustees  then
constituting the Board of Trustees pursuant to this SECTION 7) in order that the
number of trustees then constituting the Board of Trustees shall be increased by
two and the holders of Series B Preferred  Shares,  together with the holders of
shares of every other series of Series B Parity  Shares (any such other  series,
the "SERIES B VOTING PREFERRED SHARES"),  voting as a single class regardless of
series,  shall be entitled to elect the two additional  trustees to serve on the
Board of Trustees at any annual meeting of  shareholders or special meeting held
in place  thereof,  or at a  special  meeting  of the  holders  of the  Series B
Preferred  Shares and the Series B Voting Preferred Shares called as hereinafter
provided. Whenever all arrears in dividends on the Series B Preferred Shares and
the Series B Voting Preferred  Shares then outstanding  shall have been paid and
dividends thereon for the current quarterly dividend period shall have been paid
or  declared  and set apart for  payment,  then the right of the  holders of the
Series B Preferred Shares and the Series B Voting Preferred Shares to elect such
additional  trustees  shall cease (but subject  always to the same provision for
the vesting of such voting rights in the case of any similar future arrearage in
quarterly dividends), and the terms of office of all persons elected as trustees
by the  holders  of the  Series  B  Preferred  Shares  and the  Series  B Voting
Preferred Shares shall,  notwithstanding  the assignment of such trustees to any
class pursuant to Section 2.2(a) of the Declaration, forthwith terminate and the
number of the Board of Trustees shall be reduced accordingly.  At any time after
such voting power shall have been so vested in the holders of Series B Preferred
Shares and the Series B Voting Preferred Shares, the Secretary of the Trust may,
and upon the  written  request  of any  holder  of  Series  B  Preferred  Shares
(addressed to the Secretary at the principal office of the Trust) shall,  call a
special  meeting  of the  holders of the  Series B  Preferred  Shares and of the

                                      -8-
<PAGE>
Series B Voting  Preferred Shares for the election of the trustees to be elected
by them as  herein  provided,  such call to be made by  notice  similar  to that
provided in the Bylaws of the Trust for a special meeting of the shareholders or
as required by law. If any such special  meeting  required to be called as above
provided  shall not be called by the  Secretary  within 20 days after receipt of
any such  request,  then any holder of Series B  Preferred  Shares may call such
meeting, upon the notice above provided,  and for that purpose shall have access
to the records of the Trust.  The trustees  elected at any such special  meeting
shall,  notwithstanding the assignment of such Trustees to any class pursuant to
Section 2.2(a) of the Declaration,  hold office until the next annual meeting of
the  shareholders  or special  meeting held in lieu thereof if such office shall
not have  previously  terminated as above  provided.  If any vacancy shall occur
among the trustees  elected by the holders of the Series B Preferred  Shares and
the Series B Voting Preferred  Shares, a successor shall be elected by the Board
of Trustees,  upon the nomination of the  then-remaining  trustee elected by the
holders of the  Series B  Preferred  Shares  and the  Series B Voting  Preferred
Shares or the  successor  of such  remaining  trustee,  to serve  until the next
annual meeting of the  shareholders  or special meeting held in place thereof if
such office shall not have previously terminated as provided above.

         So long as any Series B Preferred Shares are  outstanding,  in addition
to  any  other  vote  or  consent  of  shareholders  required  by  law or by the
Declaration,  the affirmative  vote of at least 66 2/3% of the votes entitled to
be cast by the  holders of the Series B Preferred  Shares  given in person or by
proxy shall be necessary for effecting or validating:

                 (a)    Any  amendment,  alteration  or  repeal  of any of  the
         provisions  of  the  Declaration  or these Articles Supplementary  that
         materially  and  adversely  affects  the  voting  powers,   rights   or
         preferences of the holders of the Series B Preferred Shares;  provided,
         however,  that the amendment of the provisions of the Declaration so as
         to authorize or create or to increase  the  authorized  amount of,  any
         Series B  Fully  Junior  Shares,  Series B Junior  Shares  that are not
         senior in any respect to  the Series B Preferred Shares or any Series B
         Parity Shares  shall not be deemed to materially  adversely  affect the
         voting  powers,  rights  or  preferences  of  the  holders  of Series B
         Preferred Shares; or

                  (b)   A  share  exchange  that affects the Series B Preferred
         Shares,  a  consolidation  with  or  merger  of  the Trust into another
         entity, or a consolidation  with  or  merger of another entity into the
         Trust,  unless in each  such case  each  Series B  Preferred  Share (i)
         shall remain outstanding  without a material and adverse change to its
         terms  and  rights  or  (ii) shall  be  converted into or exchanged for
         cumulative  redeemable preferred shares of the surviving entity  having
         preferences,  conversion or other rights,  voting powers, restrictions,
         limitations  as to dividends,  qualifications and term or conditions of
         redemption  thereof  identical  to  that of a Series B Preferred  Share
         (except  for changes that do not  materially  and adversely  affect the
         holders of the Series B Preferred Shares);

         PROVIDED,  HOWEVER,  that  no such  vote of the  holders  of  Series  B
         Preferred  Shares  shall  be required  if, at or prior to the time when
         such  amendment,  alteration  or repeal is to take effect,  or when the
         issuance  of  any such prior  shares or  convertible  security is to be
         made,  as the case may be,  provision is made for the redemption of all
         Series B Preferred  Shares at  the time  outstanding to the extent such
         redemption is authorized by SECTION 5 of these Articles Supplementary.
                                      -9-
<PAGE>
         For purposes of the foregoing provisions of this SECTION 8, each Series
B Preferred Share shall have one (1) vote per share,  except that when any other
series of  Preferred  Shares  shall  have the  right to vote  with the  Series B
Preferred  Shares as a single  class on any matter,  then the Series B Preferred
Shares and such other  series  shall have with  respect to such  matters one (1)
vote per $25.00 of stated liquidation  preference.  Except as otherwise required
by  applicable  law or as  expressly  set forth  herein,  the Series B Preferred
Shares shall not have any voting rights,  and the consent of the holders thereof
shall not be required for the taking of any Trust action.

         Section 8.  NO  CONVERSION.  The Series B Preferred  Shares are not
convertible  into or  exchangeable  for any other  property or securities of the
Trust,  except into Excess Shares in connection with  maintaining the ability of
the Trust to qualify as a real estate  investment  trust for federal  income tax
purposes.

         Section 9. RECORD  HOLDERS.  The Trust and the Transfer Agent may deem
and treat the  record  holder of any Series B  Preferred  Shares as the true and
lawful owner  thereof for all  purposes,  and neither the Trust nor the Transfer
Agent shall be affected by any notice to the contrary.

         THIRD:  The   classification  of  authorized  but  unissued  shares  of
beneficial interests as set forth in these Articles  Supplementary to be the act
of the  Trust  does not  increase  the  authorized  capital  of the Trust or the
aggregate par value thereof.

        FOURTH. These Articles  Supplementary have been approved by the majority
of  the  Board  of  Trustees  of  the  Trust  in the  manner  prescribed  by the
Declaration and Maryland law.





























                                      -10-
<PAGE>
         IN WITNESS WHEREOF,  the undersigned,  the Executive Vice President and
Chief Financial Officer of the Trust,  acknowledges these Articles Supplementary
to be the act of the  Trust  and,  as to all  matters  or facts  required  to be
verified  under  oath,   acknowledges  that,  to  the  best  of  his  knowledge,
information  and belief,  the matters and facts set forth herein are true in all
material  respects  and that  this  statement  is made  under the  penalties  of
perjury.  These Articles Supplementary have been executed under seal in the name
of the Trust by its Executive  Vice  President and Chief  Financial  Officer and
attested by its Secretary this 1st day of June, 1998.

[SEAL]                                            PRIME GROUP REALTY TRUST

                                                  By: /s/ William M. Karnes
                                                     ----------------------
                                                     William M. Karnes,
                                                     Executive Vice President
                                                     and Chief Financial Officer

Attest:

By: /s/James F. Hoffman
   --------------------
   James F. Hoffman,
   Secretary


































                                      -11-

<PAGE>
                    SUBORDINATION AND INTERCREDITOR AGREEMENT

                                     BETWEEN

                   CONNECTICUT GENERAL LIFE INSURANCE COMPANY

                                       AND

                            PRIME GROUP REALTY, L.P.

                               CONTINENTAL TOWERS

                            ROLLING MEADOWS, ILLINOIS

                                  MAY 14, 1998












































<PAGE>
                                TABLE OF CONTENTS

                                                                            PAGE

1. Defined Terms.............................................................  1
2. Subordination.............................................................  1
3. Payments on Junior Indebtedness...........................................  1
4. Distributions Held in Trust...............................................  2
5. Lock Box Distributions....................................................  2
6. Payoff Obligation.........................................................  4
7. Reset.....................................................................  4
8. Purchase Option...........................................................  5
9. Intentionally Omitted.....................................................  5
10. Blocked Accounts Agreement...............................................  5
11. Tenant Estoppels and SNDAs...............................................  5
12. Insurance................................................................  5
13. Reporting................................................................  6
14. Management...............................................................  6
15. Release of Parcels.......................................................  6
16. Capital Loans and Capital Improvements...................................  7
17. Events of Default........................................................  7
18. Remedies.................................................................  9
19. Default Interest; Administrative Costs; Protective Advances;
    Collection Costs.........................................................  9
20. Performance by Prime; Waiver of Subrogation.............................. 10
21. Standstill............................................................... 11
22. Enforcement Interference by Prime........................................ 11
23. Consent by Prime......................................................... 12
24. Waivers.................................................................. 12
25. Priority of Payments, Distributions...................................... 13
26. Additional Covenants of Prime............................................ 14
27. Representations of Prime................................................. 16
28. Senior Lender Representations............................................ 17
29. Nature of Relationship................................................... 18
30. Governing Law............................................................ 18
31. Notice................................................................... 18
32. Waiver................................................................... 20
33. Binding Agreement........................................................ 20
34. Construction............................................................. 20
35. Severability............................................................. 20
36. Counterparts............................................................. 21
37. No Other Agreements...................................................... 21
38. Time of the Essence...................................................... 21
39. Rule of Construction..................................................... 21
40. Saturday, Sunday or Legal Holiday........................................ 21
41. Amendments............................................................... 21
42. No Third Party Beneficiaries; No Relationship............................ 22
43. Exhibits................................................................. 22
44. Jury Waiver; Venue....................................................... 22
45. Assignment............................................................... 22
46. Attorneys' Fees.......................................................... 23
47. Prime Exculpation........................................................ 23
48. Senior Lender Exculpation................................................ 23





                                      -i-
<PAGE>
SCHEDULES AND EXHIBITS
- ----------------------

SCHEDULE 1              DEFINED TERMS
EXHIBIT 7               RESET RECOURSE LIABILITY
EXHIBIT 15              PRELIMINARY SITE PLAN
EXHIBIT 1-43            JUNIOR LOAN DOCUMENTS
EXHIBIT 1-67            PROPERTY
EXHIBIT 1-90            SENIOR LOAN DOCUMENTS

















































                                      -ii-
<PAGE>
                    SUBORDINATION AND INTERCREDITOR AGREEMENT

              HIS  SUBORDINATION  AND  INTERCREDITOR  AGREEMENT  is  made  as of
May  14, 1998  among CONNECTICUT  GENERAL LIFE INSURANCE  COMPANY, a Connecticut
corporation, ("SENIOR LENDER"), and PRIME GROUP REALTY, L.P., a Delaware limited
partnership ("PRIME").

                                    RECITALS:

              Prime  is  the  holder of the Junior Loan Documents which evidence
the  Junior  Loan and  which  encumber  the  Property.  Simultaneously  with the
execution  and  delivery  hereof,  Senior  Lender  has made the  Senior  Loan to
Borrower which Senior Loan is evidenced and secured by the Senior Loan Documents
which also encumber the Property. This Agreement is entered into to evidence the
subordination  of the Junior  Loan and the Junior Loan  Documents  to the Senior
Loan and the Senior  Loan  Documents,  to set forth the  relative  rights of the
holders thereof and to evidence additional agreements between the holders.

              Therefore, the parties agree as follows:

1.       DEFINED TERMS.
         --------------

              In addition to the terms defined  elsewhere in this  Agreement and
the Exhibits  hereto,  certain  terms shall have the  meanings  ascribed to such
terms in SCHEDULE 1 attached hereto.

2.       SUBORDINATION.
         --------------

              2.1.      Prime hereby subordinates  and does hereby declare to be
subordinate  the  Junior  Loan  Documents,   the  Junior  Loan  and  the  Junior
Indebtedness to the Senior Loan  Documents,  the Senior Loan and the Senior Loan
Indebtedness.  The security interests of Prime in the Collateral are hereby made
subject and  subordinate  in all  respects to the  security  interests of Senior
Lender in the Collateral.  Prime agrees that it does not have nor will it assert
any lien or  security  interest  in or  against  the Lock  Box  Accounts  or the
partnership interests in Beneficiary.

              2.2.      This   Agreement  is  a  Subordination  Agreement  under
Section 510 of the United States Bankruptcy Code.

3.       PAYMENTS ON JUNIOR INDEBTEDNESS.
         --------------------------------

              Notwithstanding any provision contained herein to the contrary, as
long as no Senior  Default  exists with  respect to the payment  when due of any
principal,  interest,  prepayment  premium or any other amount payable to Senior
Lender by Borrower or Beneficiary  under the Senior Loan Documents,  and as long
as no Senior Event of Default has occurred and is  continuing,  Prime shall have
the right to receive payments due under the Junior Loan Documents to the extent,
but only to the extent,  cash is available for such payments  under the terms of
the Blocked Accounts Agreement ("PERMITTED PAYMENTS"). Prime agrees that it will
not accept or demand any payments (by  acceleration,  set-off or otherwise) with
respect to the Prime Indebtedness other than the Permitted Payments. If a Senior



                                      -1-
<PAGE>
Event of Default or such monetary Senior Default occurs and is continuing, Prime
shall not be entitled and shall not accept any payment or  prepayments  (whether
by acceleration, set-off or otherwise) on the Junior Indebtedness, such payments
to be held and distributed, if received, in accordance with Section 4.

4.       DISTRIBUTIONS HELD IN TRUST.
         ----------------------------

                  If Prime shall receive any payment or distribution from or for
the  account of  Borrower or  Beneficiary  or any cash or other  proceeds of the
Collateral,  other than a Permitted Payment, Prime shall hold the same in trust,
as trustee, for the benefit of Senior Lender and shall promptly deliver the same
to the Lock Box  Account or as  otherwise  directed  by Senior  Lender,  for the
benefit  of  Senior  Lender  in  precisely  the form  received  (except  for the
endorsement or assignment thereof by Prime without recourse or warranty). In the
event Prime fails to make any such endorsement or assignment,  Senior Lender, or
any of its officers or employees,  is hereby irrevocably  authorized to make the
same.

5.       LOCK BOX DISTRIBUTIONS.
         -----------------------

              5.1.      DISTRIBUTIONS PRIOR TO SENIOR ACCELERATION.
                        -------------------------------------------

              (a)       Prior to  the occurrence of a Senior  Acceleration,  all
         funds deposited in the Lock Box Account from time to time and all other
         revenues  of  the Property,  including all Rents as defined in the Lock
         Box Agreement,  all  Gross Revenues other than Special Service Payments
         and  all Net Proceeds and TIA Periodic Payments (collectively "FUNDS"),
         shall  be  distributed  as  provided  in  Section  2.3 of the  Lock Box
         Agreement.  The  Applied Amount shall, until the occurrence of an Event
         of  Default  hereunder,  be distributed as follows and in the following
         order of priority:

                        (i)  To  Senior  Lender,  any  unpaid  Monthly Secondary
              Payments  due in prior months and any outstanding Default Charges.

                        (ii) To  Senior Lender,  any unreimbursed Administrative
              Costs and Protective Advances.

                        (iii)To Senior  Lender,  the amount of $73,989.41  (each
              a  "MONTHLY  SECONDARY  PAYMENT") in payment of the balance of the
              Scheduled  Payment due in such month  remaining  after  payment to
              Senior Lender of the Minimum Payment.

                        (iv) To  Lock  Box  Bank,  the deposits due in each such
              month under the terms of the Blocked Accounts Agreement.

                        (v)  To  Prime,  the  balance  on  account of the Junior
              Indebtedness.

              (b)       Prime  shall  cause  to  be  deposited  in  the Lock Box
         Account all Funds which are received by Prime or any of its Affiliates.
         Prime  will  cause  to be deposited in the Property  Management Account
         all  Special Service Payments which are received by Prime or any of its
         Affiliates.  So long as an  Affiliate  of Prime is the  Manager,  Prime

                                      -2-
<PAGE>
         will  not  permit  any withdrawal from the Property  Management Account
         except as permitted by the Management Agreement.

              5.2. DISTRIBUTION FOLLOWING EVENT OF DEFAULT OR SENIOR
                   ACCELERATION.
                   -------------------------------------------------

              (a)  Following  an  Event  of  Default  and  so  long as no Senior
         Acceleration has occurred,  all Funds  theretofore deposited and as and
         when  deposited  thereafter  into  the  Lock  Box  Account or otherwise
         collected by Senior Lender shall be applied in  accordance  with and in
         the order of priority set forth in Section 2 of the Lock Box  Agreement
         with  the  Applied  Amounts  to  be  applied  to any one or more of the
         following (to  the  extent  not  paid  with distributions under Section
         2.3(b)(i)-(vii)  of  the Lock  Box  Agreement)  and  in  such  order as
         Senior Lender may determine in its absolute discretion: any   Operating
         Expenses of  the  Property;  any  required  deposits  under the Blocked
         Accounts   Agreements;    payment   of  re-leasing  costs  and  capital
         expenditures  of whatever nature not funded from any remaining funds in
         the  Blocked  Accounts;  any  Default Charges,  any  Deferred Payments;
         accrued  and  unpaid  Prime  Interest,   including  Deferred  Interest;
         Outstanding Principal;  Prepayment Premium;  and any other component of
         Senior Indebtedness.

              (b)  Following   a  Senior  Acceleration,  all  Funds  theretofore
         deposited  and  as  and  when  deposited  thereafter  into the Lock Box
         Account or otherwise collected  by Senior Lender shall be applied  upon
         the sole direction of Senior Lender to any one or more of the following
         in  such  order   as  Senior  Lender  may  determine  in  its  absolute
         discretion: current  or past  Operating Expenses; any required deposits
         under the Blocked Accounts Agreements;  payment of real  estate  taxes,
         re-leasing   costs and  capital  expenditures  of  whatever  nature not
         funded  from any  remaining funds in the Lock Box  Accounts or  Blocked
         Accounts;  Default  Charges;  accrued  and  unpaid  Interest, including
         Deferred Interest;  Outstanding Principal;  Prepayment Premium; and any
         other component of Senior Indebtedness.

              5.3. SENIOR LENDER NOTICES.
                   ----------------------

                   Senior Lender shall give such Senior Lender Notices under and
         as defined in the Lock Box  Agreement  as may be required to effect the
         distributions described in Sections 5.1 and 5.2 above.

6.       PAYOFF OBLIGATION.
         ------------------

         On  January 5, 2013  ("FINAL  PAYOFF  DATE")  or  such  earlier date as
provided in this Agreement, Prime will pay off the Senior Indebtedness by paying
to Senior Lender by Wire Transfer an amount equal to the Payoff Amount  (without
Prepayment  Premium),  upon  receipt of which  Senior  Lender  will  perform the
Release Actions.






                                      -3-
<PAGE>
7.       RESET.
         ------

         On a  date which is between  one  hundred  forty  (140) and one hundred
sixty (160) days prior to the Reset/Payoff  Date, Senior Lender will, by written
notice to Prime (the "RESET  NOTICE"),  effective on the  Reset/Payoff  Date and
continuing  for the balance of the Term (the portion of the Term  commencing  on
the  Reset/Payoff  Date being the "RESET  PERIOD"):  (a) reset the Interest Rate
(the "RESET INTEREST  RATE"),  (b) establish an underwriting  fee payable on the
Reset/Payoff Date, (c) reset the amortization  schedule (the "RESET AMORTIZATION
SCHEDULE"),  (d)  calculate  and set forth the Reset  Scheduled  Payment and the
Reset Secondary Payment Amount and (e) set forth any other  modifications of the
payment  terms of the Senior Note (the terms set forth in the Reset Notice being
the "RESET TERMS").  If Senior Lender fails to give the Reset Notice on a timely
basis,  the  only  consequence  shall  be that the  Reset/Payoff  Date  shall be
postponed to the date which is one hundred forty (140) days following the giving
of a late Reset Notice. Senior Lender shall be free to quote such Interest Rate,
underwriting fees, amortization schedule,  Closed Period, Prepayment Premium and
such other terms and conditions  applicable to the Reset Period as Senior Lender
may  determine in its  absolute  discretion  (except that Senior  Lender may not
change the formula for calculation of the Reset Secondary Payment Amount). Prime
will advise  Senior  Lender,  by written  notice (the "RESET  RESPONSE"),  given
within sixty (60) days  following  receipt of the Reset  Notice,  whether  Prime
accepts  or rejects  the Reset  Terms.  Failure by Prime to give a timely  Reset
Response shall be deemed a rejection of the Reset Terms.  If the Reset Terms are
so accepted, Senior Lender will prepare within thirty (30) days thereafter,  and
Senior Lender and Prime will promptly  execute,  a modification or modifications
of this  Intercreditor  Agreement  and the Prime  Documents in  accordance  with
EXHIBIT 7  attached  hereto  and  otherwise  as  Senior  Lender  and Prime  deem
necessary  to reflect  the Reset  Terms.  Senior  Lender  shall also  prepare an
appropriate  amendment to the Senior Loan Documents (the "RESET  AMENDMENT") and
tender it to Borrower for execution,  provided that the refusal or other failure
of Borrower to execute such amendment shall not affect, as between Senior Lender
and Prime, Senior Lender's right to receive interest and debt service based upon
the Reset Terms.  Accordingly,  the Secondary  Payment  Amount shall be reset to
reflect  the Reset  Terms  whether  or not the  Senior  Note is ever  amended to
reflect  the Reset  Terms.  Such  modification  or  modifications  shall  become
effective on the Reset/Payoff Date. If the Reset Terms are so rejected or deemed
rejected, Prime shall, on the Reset/Payoff Date, pay off the Senior Indebtedness
by  paying  to  Senior  Lender  by Wire  Transfer  the  Payoff  Amount  (without
Prepayment  Premium),  upon  receipt of which  Senior  Lender  will  perform the
Release Actions.

8.       PURCHASE OPTION.
         ----------------

         Prime  shall  have  the  option to purchase the Senior Loan at any time
after the Closed  Period upon thirty  (30) days prior  written  notice to Senior
Lender and payment to Senior  Lender by Wire  Transfer of the Payoff Amount plus
the  Prepayment  Premium.  Upon  receipt of such  payment,  Senior  Lender shall
perform the Transfer Actions.

9.       INTENTIONALLY OMITTED.
         ----------------------




                                      -4-
<PAGE>
10.      BLOCKED ACCOUNTS AGREEMENT.
         ---------------------------

         Simultaneously  with  the  execution  and delivery  hereof,  (a) Prime,
Senior  Lender,  and Lock Box  Bank  have  entered  into  the  Blocked  Accounts
Agreement and (b) Prime has made the initial deposits of funds pursuant thereto.
Prime hereby  pledges its interest in the Blocked  Accounts to Senior  Lender as
security for its obligations  under this  Intercreditor  Agreement and the other
Prime Documents.

11.      TENANT ESTOPPELS AND SNDAs.
         ---------------------------

         To the extent that  Tenant  Estoppels and SNDAs from  Tenants occupying
100% of the total  rentable  space in the  Property  have not been  delivered to
Senior  Lender on the date  hereof,  Prime will  diligently  pursue the  missing
Tenant  Estoppels  and SNDAs and report on the progress  thereof as requested by
Senior Lender.

12.      INSURANCE.
         ----------

         Throughout the Term, so long as Prime or an Affiliate of Prime is the
Manager,  Prime will cause Manager to maintain  policies of All Risk Replacement
Cost Insurance and Agreed Amount  Endorsement,  flood insurance (if the Property
is in an area which is  considered a flood risk area by the U.S.  Department  of
Housing and Urban Development), rent insurance in an amount not less than twelve
months  gross  rent,  comprehensive  general  and excess or  umbrella  liability
insurance and such other appropriate insurance as Senior Lender may require from
time to time in amounts, form, and substance satisfactory to Senior Lender, with
companies  acceptable to Senior Lender which have a Best's rating of at least A-
(superior),  Class:  "X." Senior Lender shall be named additional  insured under
all of the aforementioned  policies, and loss payees on all such policies except
those pertaining to general and excess liability  coverage.  Prime will, so long
as Prime or an  Affiliate  of Prime is the  Manager,  cause  Manager  to deposit
original  certificates,  certified  copies of the policies or original  policies
with Senior Lender with respect to all required  insurance.  Such policies shall
not be  cancelable  without  thirty  (30) days prior  written  notice to JTD and
Senior Lender.  Replacement  certificates or policies  extending the term of the
insurance shall be delivered to Senior Lender prior to the scheduled  expiration
thereof,  in default of which Senior  Lender may, but shall not be obligated to,
acquire such insurance at Prime's cost,  payable on demand. Any cost so incurred
by Senior Lender shall be an Administrative Cost.

13.      REPORTING.
         ----------

         So long as the Manager is an  Affiliate of Prime,  Prime will cause the
Manager to furnish Senior Lender the Financial Reports required by the Mortgage.

14.      MANAGEMENT.
         -----------

         The  Property  will  be  managed  at all  times  by a  property manager
approved by Senior Lender pursuant to a management  agreement approved by Senior
Lender. Senior Lender approves Prime Group Realty Services,  Inc. as the initial
Manager under the Management  Agreement  previously submitted to and approved by

                                      -5-
<PAGE>
Senior  Lender  (the  "MANAGEMENT  AGREEMENT").  A change in the  Manager or the
Management  Agreement  without the consent of Senior Lender shall be an Event of
Default  hereunder.  Any transaction which results in Manager no longer being an
Affiliate of Prime shall constitute a change in the Manager.

15.      RELEASE OF PARCELS.
         -------------------

         Prime intends to cause to be developed  vacant sites currently included
in the Property for one or two office towers  and/or one hotel  generally at the
locations indicated on the site plan attached hereto as EXHIBIT 15 and otherwise
pursuant to a development plan to be submitted to Senior Lender for its approval
(the "RELEASE PARCELS"). Senior Lender will release the Release Parcels from the
lien  of  the  Senior  Loan  Documents,   provided  (a)  the  developer  is  not
Beneficiary, (b) Beneficiary does not undertake any substantive role in any such
development or incur any  indebtedness or other  obligation in respect  thereof,
(c) the  development  plan may  include the  construction  of one or two parking
structures  generally  as  indicated  on EXHIBIT 15, (d) Senior  Lender will not
unreasonably withhold or delay its approval of the development plan except that,
insofar as the development plan has a material impact on the remaining Property,
Senior Lender may withhold its approval in its absolute discretion, (e) prior to
the release of such parcels,  Senior Lender is given reasonable assurances as to
the  completion  of all  shared  facilities  shown on the  development  plan and
payment  of  the  costs  thereof,  (f)  easements,  covenants  and  restrictions
("EASEMENTS") relating to use, operation, maintenance, repair and replacement of
shared  facilities  and sharing of and  payment for the cost of such  operation,
maintenance,  repair and  replacement of the shared  facilities are executed and
recorded in form and substance  reasonably  acceptable to Senior Lender, (g) the
released  parcels  will become  separate  tax parcels  apart from the  remaining
Property, (h) Senior Lender and Fee Owners receive contemporaneous  endorsements
to their respective title policies  reaffirming  zoning  compliance and insuring
such  Easements,  such  endorsements  to be in  form  and  substance  reasonably
acceptable to Senior Lender and Beneficiary,  and (i) Prime pays or causes to be
paid all of Senior Lender's expenses,  including reasonable  attorneys' fees and
survey and title costs, incurred in connection therewith.

16.      CAPITAL LOANS AND CAPITAL IMPROVEMENTS.
         ---------------------------------------

                  Prime will fund as Capital Loans to Borrower  under the Junior
Loan Documents all amounts  necessary to pay Re-Leasing  Costs and Capital Costs
so that  Mortgagor  may perform its  obligations  in respect  thereof  under the
Senior Mortgage.

17.      EVENTS OF DEFAULT.
         ------------------

         Each of the  following shall constitute  an Event of Default under this
Intercreditor Agreement:

         (a)  The occurrence of any Senior Event of Default, provided:

              (i)  in the case of a Senior  Event of Default which arises from a
         Senior  Default  in the  making  of  any  payment  or  deposit required
         under  the  Senior  Loan  Documents,  such Senior Default has continued
         unremedied  for  five  (5) days  following  Prime's  receipt of written
         notice of such Senior  Default  (whether or not notice or the  elapsing

                                      -6-
<PAGE>
         of any grace  period is  required under the Senior Loan Documents prior
         to such Senior Default becoming a Senior Event of Default); or

              (ii) in the case of a Senior Event of Default  which arises from a
         Senior  Default  other  than  failure  to  make  any payment or deposit
         required  under  the Senior  Loan  Documents,  such  Senior Default has
         continued  unremedied  for thirty (30) days  following  Prime's receipt
         of written notice of such Senior Default (whether  or not notice or the
         elapsing  of  a  longer  or  shorter grace period is required under the
         Senior  Loan  Documents)    unless  (A)  such   default  is  reasonably
         susceptible of cure but such cure cannot be  accomplished  within  such
         thirty (30) period using reasonable  commercial  efforts and (B) within
         such thirty (30) day period (1) Prime  undertakes  in a written  notice
         (the "CURE  NOTICE") to cure the default within a reasonable  period of
         time  by  taking  such  action as is described therein, (2) Prime posts
         such security as is reasonably required by Senior Lender to assure that
         such  default will be cured  within  such  period  of  time,  (3) Prime
         continuously  and  diligently  pursues such cure in compliance with the
         Cure Notice and such other reasonable requirements reasonably requested
         by  Senior  Lender,  (4) the  value of the Property or Senior  Lender's
         interest  therein is not  jeopardized  during the  cure  period and (5)
         Prime  pays  any  reasonable  costs  (including  reasonable  attorneys'
         fees) incurred by Senior Lender in preparing and sending notices of the
         default,  evaluating  the  default and the proposed cure and monitoring
         the cure.

         (b)  The  occurrence of an Event of Default under and as defined in any
    of the Prime Documents.

         (c)  The failure of Prime to pay or make any  payment, deposit, Default
    Charge,  Administrative  Cost or Protective Advance due under this Agreement
    or any other Prime  Document  within five (5) days following Senior Lender's
    written request to Prime for the payment thereof.

         (d)  The  failure  of  Prime  to pay off the Senior Indebtedness on the
    Reset/Payoff Date if so required by Section 7 or, if not so required, on the
    Final Payoff Date.

         (e)  Any action by Prime in violation of Section 21 or 22 hereof.

         (f)  The  failure of Prime to perform any other obligation  under  this
     Agreement  or  any  of the other Prime Documents and such failure continues
     for thirty (30) days following  receipt by Prime of written notice thereof.

         (g)  The  untruth  in  any  material  respect  of  any  warranty  or
    representation made by Prime in any of the Prime Documents.

         (h)  (i) The filing by or against any of either Fee Owner, Beneficiary,
    General Partner, or Prime of a  petition under the United States  Bankruptcy
    Code, which in the case of an involuntary  petition is not dismissed  within
    ninety  (90) days;   (ii) an  assignment  by  any  party  for the benefit of
    creditors;  or (iii) the  appointment  of a  trustee, receiver or liquidator
    for any such party.

         (i)  The  transfer  or encumbrance of any direct or  indirect  interest
    in the  Property,  General  Partner, Beneficiary,  the beneficial  interest,
    either Fee Owner or Prime's  interest as holder of the Junior Loan Documents

                                      -7-
<PAGE>
    by  either  Fee  Owner,   Member,  General  Partner,  Beneficiary  or Prime,
    provided   that  the  foregoing  shall  not  restrict  the  transfer  of (i)
    limited  partnership interests in  Beneficiary,  (ii) title to the  Property
    from  either Fee Owner to  Beneficiary,  (iii) the  membership  interest  in
    General  Partner to an  Affiliate  of Prime or an employee of Prime or of an
    Affiliate  of  Prime  and  the spouse of any such person,  or  (iv)  limited
    partnership  interests in Prime or units of beneficial  interest in Prime
    Group Realty  Trust,  a Maryland real estate investment trust.

         (j)  Any  modification  of  the Junior Loan Documents without the prior
    written consent  of Senior  Lender,  which consent shall not be unreasonably
    withheld.

         (k)  The  occurrence of a  Management  Event of Default  (as defined in
    the  Management  Agreement)  at any time when any  Affiliate of Prime is the
    Manager.

18.      REMEDIES.
         ---------

         Upon  the  occurrence  of  an Event of Default under this Intercreditor
Agreement,  Senior Lender may exercise  some or all of the following  rights and
remedies in any order and in any combination it may choose:

              (a)  Exercise any right or remedy available under this Agreement
         or any of the Prime Documents.

              (b)  Take any action permitted  under Section  5.2(a) above or, if
         a Senior Acceleration has occurred, under Section 5.2(b) above.

              (c)  Designate a new Manager, replace the Manager and/or modify or
         replace the Management Agreement.

19.      DEFAULT INTEREST; ADMINISTRATIVE COSTS; PROTECTIVE ADVANCES; COLLECTION
         COSTS.
         -----------------------------------------------------------------------

              (a)  All payments or deposits  due under this  Agreement or any of
         the other Prime  Documents shall bear interest at the Default Rate from
         the  date  due  until  paid  ("DEFAULT INTEREST").  In addition, if any
         payment  due  to Senior Lender under this Agreement or any of the other
         Prime Documents is not paid within five (5) days following the due date
         thereof, Senior Lender  may impose,  with or without notice to Prime, a
         late  payment fee (each, a "LATE CHARGE") equal to four percent (4%) of
         the amount due to cover Senior Lender's administrative expenses.

               (b) Prime will reimburse Senior Lender within five (5) days after
         demand  for  all  reasonable  expenses,  including  fees  of attorneys,
         architects, engineers and other  consultants,  incurred  in  connection
         with  any  consent  or  approval  sought  by  Prime,  any  Fee Owner or
         Beneficiary pursuant  to  or in  connection  with this  Agreement,  the
         other  Prime  Documents,  the  Senior Loan  Documents  or the  Property
         (collectively "ADMINISTRATIVE   COSTS").   Senior  Lender  may  require
         payment  of Administrative  Costs as a condition  precedent  to  giving
         any such consent or approval sought by Prime.



                                      -8-
<PAGE>
              (c)  Prime shall appear  in  and defend any action  or  proceeding
         purporting  to  affect  the Senior  Loan  Documents,  Property,  or the
         Security  or the rights or powers of the Senior Lender. Prime shall pay
         all  reasonable costs and expenses,  including without  limitation cost
         of  evidence  of title and  reasonable  attorneys'  fees,  in  any such
         action  or proceeding in which Senior Lender may appear. If Prime fails
         to  perform any of the material  covenants or agreements  contained  in
         this  Agreement,  or if any action or proceeding is commenced which may
         have  a  materially  adverse  effect  on  the  Senior  Loan  Documents,
         Property  or  the  Security  or any part  thereof,  including,  but not
         limited to,  eminent domain,  code  enforcement,  or proceedings of any
         nature  whatsoever under any federal or state law, whether now existing
         or  hereafter enacted or amended,  relating to bankruptcy,  insolvency,
         arrangement,   reorganization  or other form of debtor relief,  or to a
         decedent,  then  Senior Lender may, but without obligation to do so and
         without  notice  to or demand  upon Prime and without  releasing  Prime
         from  any obligation  hereunder,  make such appearances,  disburse such
         sums  and  take  such  action  as  Senior  Lender  deems  necessary  or
         appropriate  to protect Senior Lender's interests,  including,  but not
         limited to,  disbursement of reasonable attorneys' fees, entry upon the
         Property  to make  repairs or take other action to protect the Property
         or  other  Security,  making of  Necessary  Capital  Expenditures,  and
         payment,  purchase, contest or compromise of any mechanics lien and any
         other  encumbrance,  charge or lien  which  other  encumbrance  in  the
         judgment of  Senior Lender  appears to be prior or equal in priority to
         the  lien  of  the  Loan  Documents.  Prime  further  agrees  to pay or
         reimburse  Senior Lender for the payment of all reasonable  expenses of
         Senior  Lender   (including  without  limitation   attorneys  fees  and
         expenses)  incident to  the actions of Senior  Lender  pursuant to this
         Section 19(c).  Any amounts disbursed by Senior Lender pursuant to this
         Section  19(c)   or  otherwise   reimbursable  by  Prime   ("PROTECTIVE
         ADVANCES")  shall  be  payable  by Prime  within  ten (10)  days  after
         demand.  Nothing  contained  in  this  Section  shall be  construed  to
         require  Senior Lender to incur any expense,  make any  appearance,  or
         take  any other action.

              (d)  Prime  will  pay  within  ten  (10)  days  after  demand  the
         reasonable  costs,  including  fees of attorneys and other consultants,
         incurred  by  Senior  Lender  in preparation for the exercise of and in
         exercising  any of its remedies  under or in respect of this Agreement,
         the  Senior  Loan  Documents  or the Property arising by reason of  the
         occurrence of any default or Event of Default under this Agreement, any
         of   the   other   Prime   Documents   or  the  Senior  Loan  Documents
         (collectively, "COLLECTION COSTS").

20.      PERFORMANCE BY PRIME; WAIVER OF SUBROGATION.
         --------------------------------------------

         Senior  Lender  shall  accept  performance  by  Prime  of  any  of  the
obligations  of  Borrower  or  Beneficiary  under  the  Senior  Loan  Documents,
including  any  cure  effected  during  any  cure period provided for therein or
herein.   Notwithstanding any such  performance by Prime of any  obligations  of
Borrower or Beneficiary,  Prime hereby absolutely and irrevocably waives, to the
fullest extend permitted by applicable law, any rights it may have, by contract,
at law or in equity, to be subrogated to Senior Lender's rights against Borrower
or Beneficiary  under the Senior Loan Documents or to Senior  Lender's  security
interests in any of the  Collateral  until three  hundred  sixty-six  (366) days

                                      -9-
<PAGE>
following the satisfaction in full of the Senior  Indebtedness.  Provided Senior
Lender has complied  with the terms of this  Agreement,  Prime shall not contest
any foreclosure of Senior Lender's  security  interests  against the Collateral.
Notwithstanding  any provision of this Agreement,  Prime agrees and acknowledges
that it is not, in its capacity as creditor of Borrower and Beneficiary, a third
party  beneficiary  of any  obligations  of Senior  Lender under the Senior Loan
Documents.

21.      STANDSTILL.
         -----------

         Prime  shall  not under any  circumstance  take any action to foreclose
or otherwise  enforce any of the  security  interests or rights under the Junior
Loan  Documents  by reason of a default  thereunder  unless and until the Senior
Indebtedness  is paid in full,  Prime  acknowledging  that it is  fully  able to
protect its rights under the Junior Loan  Documents by  exercising  its right to
pay off the Senior Indebtedness (including Prepayment Premium) at any time after
the  Closed  Period.  Without  limitation  of the  foregoing,  until the  Senior
Indebtedness  is paid in full,  (i) Prime will take no action which would or may
have the effect of terminating any lease of the Property by reason of such lease
being subordinate to the Junior Loan Documents or otherwise, (ii) Prime will not
seek the  appointment  of a receiver,  trustee or  conservator  of the Property,
Borrower or  Beneficiary in any proceeding or otherwise and (iii) Prime will not
exercise any assignment of rents contained in the Junior Loan Documents.

22.      ENFORCEMENT INTERFERENCE BY PRIME.
         ----------------------------------

              (a)  Until  at least three  hundred sixty-six (366) days following
         the  satisfaction  in  full  of the Senior Indebtedness,  Prime  hereby
         covenants and agrees that it will not acquiesce, petition or  otherwise
         invoke or cause any other Person to invoke  the process  of the  United
         States of America, any state or other political  subdivision thereof or
         any other jurisdiction,  any entity exercising executive,  legislative,
         judicial, regulatory or administrative functions  of or  pertaining  to
         government for the purpose of commencing or sustaining  any  Insolvency
         Proceeding against Borrower or  Beneficiary.  Prime hereby  irrevocably
         appoints Senior Lender as Prime's agent and  attorney-in-fact  to  vote
         the full amount of the Junior  Indebtedness  and to file any  claims as
         the  holder  thereof  in any  Insolvency  Proceeding.  The Junior  Loan
         Documents  are hereby  pledged to Senior Lender as security for Prime's
         obligations  under   this  Agreement and  the  other  Prime  Documents.
         Accordingly,  such  irrevocable  appointment  of Senior Lender as agent
         and attorney-in-fact is a power coupled with an interest. In so voting,
         Senior  Lender  shall  be  entitled  to  vote in its own  self-interest
         without  regard to the  interest  of Prime.  Without  limitation of the
         foregoing,  Prime shall not in any Insolvency Proceeding propose,  join
         in, or vote in favor of, any plan of  reorganization (or any  provision
         in  any  such  plan)  that  would  impair  (within  the  meaning  of 11
         U.S.C.ss. 1124)  any  claim  of Senior  Lender  under  the Senior  Loan
         Documents or any security or collateral for the Senior Loan,  including
         without  limitation any plan (or any  provision  in any such plan) that
         would (i) extend the term of the Senior Loan, (ii) cause any  reduction
         in  the  debt  service or  the  amount of the debt owed by  Borrower or
         Beneficiary to Senior Lender under the Senior Loan  Documents or any of
         them, or (iii) amend or modify in any way the agreements  between Prime
         and  Senior  Lender  as set forth in this Agreement and the other Prime
         Documents.
                                      -10-
<PAGE>
              (b)  Prime  shall not  institute  any  judicial or  administrative
         proceeding  against  Senior  Lender with the intent of interfering with
         or delaying the exercise by Senior Lender of its rights and remedies in
         respect of the Collateral or any part thereof or under the Senior  Loan
         Documents  or  this  Agreement or  the other Prime  Documents.  Without
         limiting the generality of the foregoing, in the event of an Insolvency
         Proceeding under the United States Bankruptcy  Code, Prime agrees  that
         it will not object to or oppose any efforts by Senior  Lender to obtain
         relief  from the automatic  stay under Section 362 of the United States
         Bankruptcy  Code or to seek to cause such entity's bankruptcy estate to
         abandon the Property (or any portion  thereof).   Prime agrees that  if
         Prime or any of its Affiliates  purchases any claims of other creditors
         of Borrower in any Insolvency  Proceeding, such claims and all security
         therefor  will  for  all  purposes  be  subject  to  the  terms of this
         Agreement  as if such claims were included in the Junior Loan and as if
         such security were included in the Junior Loan Documents.

23.      CONSENT BY PRIME.
         -----------------

         Prime  hereby  consents  and  agrees  that,   subject to the provisions
of this Agreement and the other Prime  Documents,  any lawful action taken by or
on behalf of Senior  Lender in the  exercise of Senior  Lender's  rights  and/or
remedies under the Senior Loan Documents  (including,  without  limitation,  any
foreclosure  or acquisition of title to the Property or any part thereof by deed
in lieu of  foreclosure  or otherwise)  are hereby deemed to be consented to and
approved by Junior Lenders in all respects.

24.      WAIVERS.
         --------

         Prime  hereby  waives and agrees not to assert or take advantage of, to
the fullest extent permitted by law:

              (a)  Any  right  to  require  Senior  Lender  to  proceed  against
         Borrower  or  any  other Person or to proceed against or exhaust any of
         the  Collateral  held by it at any time,  or to proceed  with any other
         remedy in Senior Lender's power before  exercising any other right,  or
         remedy under the Senior Loan Documents;

              (b)  Until  the  Senior  Indebtedness  has  been paid in full, any
         defense that may arise by reason of the incapacity, lack of  authority,
         death  or  disability  of,  or  revocation  hereof by any Person or the
         failure of Senior  Lender to file prior to any disallowance  date or to
         enforce  a  claim   against  the  estate   (either  in  administration,
         bankruptcy or any other proceedings), of any Person;

              (c)  Until the Senior  Indebtedness has been paid in full, demand,
         protest  and  notice  of  any  kind,  except  for  any notice expressly
         required  under  the  Prime  Documents  or  the Senior Loan  Documents,
         including  without limiting  the generality of the foregoing, notice of
         the  evidence,  creation  or  incurring  of  any  new  indebtedness  or
         obligation or of any action  or non-action  on the part of  Borrower or
         Senior  Lender  in  connection  with  any  obligation  or  evidence  of
         indebtedness held by Senior Lender as collateral or in connection  with
         any  indebtedness evidenced by the Senior Loan Documents;


                                      -11-
<PAGE>
              (d)  Any and all right to have the Property and estates comprising
         the Property or any other Collateral marshalled upon any foreclosure of
         the security  interests of Senior Lender and Prime further  agrees that
         any court having jurisdiction to foreclose such security  interests may
         order  the  Collateral  sold  as an  entirety  or  in  any  parcels  or
         combinations thereof elected by Senior Lender.

25.      PRIORITY OF PAYMENTS, DISTRIBUTIONS.
         ------------------------------------

         In  the  event  of  any  Insolvency  Proceeding,  whether  voluntary or
involuntary  and  whether or not  involving  insolvency  or  bankruptcy,  or any
assignment  for the benefit of creditors or any other  marshalling of assets and
liabilities of Borrower,  the Senior Indebtedness (which term as used throughout
this Agreement  shall include,  without any  limitation,  any Interest  accruing
after the  occurrence of a Senior Event of Default  whether or not such Interest
is allowed as a claim in any Insolvency  Proceeding)  due or to become due shall
first be paid in cash in full  before  any  payment  on  account  of  principal,
interest  or  otherwise  is made upon the Junior  Indebtedness,  and in any such
proceeding,  any payment or  distribution  of any kind or character which may be
payable or deliverable with respect to the Junior  Indebtedness shall be paid or
delivered  directly to Senior  Lender for  application  in payment of the Senior
Indebtedness,  unless and until the Senior Indebtedness shall have been paid and
satisfied in full in cash. Further, Prime specifically agrees as follows:

              (a)  In the event that,  notwithstanding  the foregoing,  upon any
         proceeding or event  described  above,  any payment or  distribution of
         assets of Borrower or Beneficiary of any kind or character,  whether in
         cash  or  property,  shall  be  received  by  Prime  before  the Senior
         Indebtedness  is  paid  in  full  in cash, such payment or distribution
         shall  be held in trust for the benefit of Senior Lender   and,  unless
         prohibited  by law or court order,  shall  be immediately  paid over to
         Senior Lender for application to the payment of the Senior Indebtedness
         remaining  unpaid  until the Senior Indebtedness shall have  been  paid
         in full in cash,  after  giving  effect  to any  concurrent payment  or
         distribution  with respect  to the Senior Indebtedness.  The provisions
         of this Agreement shall apply among Senior Lender and Prime, regardless
         of  whether  any of the security interests of any party hereto are held
         to be invalid or the priority thereof changed.

              (b)  Prime shall not take or support any action to contest (i) the
         validity  of any liens or security  interests  granted to Senior Lender
         under the Senior  Loan  Documents  or with  respect to the  Collateral,
         (ii) the  relative  rights  of  Senior Lender and Prime with respect to
         such liens and security interests or (iii) the enforceability of this
         Agreement or any of the Senior Loan Documents.

              (c)  The subordination provisions contained herein shall  continue
         to be effective or be reinstated,  as the case may be,  until such time
         as the Senior Indebtedness shall be paid in full in cash; provided that
         if  at  any  time  any  payment  of  any  of the Senior Indebtedness is
         rescinded or must  otherwise  be  returned  by Senior  Lender  upon the
         insolvency, bankruptcy or reorganization  of Borrower or Beneficiary or
         otherwise, the  provisions of this  Agreement  shall again be operative
         until the Senior  Indebtedness shall again be paid in full in cash, all
         as though such payment had not been made.


                                      -12-
<PAGE>
26.      ADDITIONAL COVENANTS OF PRIME.
         ------------------------------

         Prime  covenants  and  agrees  for  the benefit of Senior Lender or any
subsequent holder of the Senior Loan Documents,  regardless of the provisions of
the Junior Loan Documents, as follows:

              (a)  Without  limiting  the  generality  of any  other  provisions
         of this Agreement, except as provided in this Section 26, Senior Lender
         may at any time and from time to time without the consent of, or notice
         to  Prime,  and  without  incurring  responsibility  to  Prime, upon or
         without any terms or conditions and in whole or in part:

                        (1)  with  the  written  consent  of  Prime,  change the
                   manner  or place and/or  change or extend the time of payment
                   or performance of, renew or alter, any portion of the  Senior
                   Indebtedness or any other obligations of any Person evidenced
                   or  secured  by  the  Senior  Loan Documents;

                        (2)  sell, exchange, release, surrender, realize upon or
                  otherwise  deal  with  in  any  manner  and  in  any order any
                  Collateral;

                        (3)  exercise or refrain  from   exercising  any  rights
                   against Borrower or Beneficiary or others or otherwise act or
                   refrain from acting;

                        (4)  settle or compromise  any  portion  of  the  Senior
                   Indebtedness or any other obligations of any Person evidenced
                   or  secured  by  the  Senior  Loan  Documents,  any  security
                   therefor  or  any  liability  incurred directly or indirectly
                   in respect thereto;

                        (5)  apply  any  sums  by  whomsoever  paid or howsoever
                   realized  to  any  liability  or  liabilities  of Borrower or
                   Beneficiary to Senior Lender regardless of what  liability or
                   liabilities  of  Borrower  or  Beneficiary  remain  unpaid or
                   unperformed; and/or

                        (6)  consent  to or waive  any  breach of,  or any  act,
                   omission  or default under, any of the Senior Loan Documents,
                   or otherwise amend,  modify or supplement any  of  the Senior
                   Loan   Documents  or  any  other  instruments  or  agreements
                   executed  and  delivered in connection therewith or otherwise
                   relating thereto.

              (b)  The benefits and burdens of this Agreement  are  transferable
         to  any  person  to  whom  Senior  Lender  may transfer the Senior Loan
         Documents.

              (c)  Until the Senior Indebtedness is repaid in full, Prime hereby
         releases any claim to rents, extraordinary payments with respect to any
         lease,  insurance  proceeds  and/or  condemnation  awards and all other
         Funds and Special  Service Payments (each of which if received shall be
         held and  delivered in accordance  with Section 4).  Insurance proceeds
         or  condemnation  awards  shall  be  applied  as provided in the Senior
         Mortgage and, to the extent  applicable,  the Lock Box Agreement. Prime

                                      -13-
<PAGE>
         further  agrees  that,  in the event of a casualty to the Property or a
         condemnation or taking under a power of eminent domain, all adjustments
         of insurance  claims,  condemnation claims and settlements of insurance
         claims,  condemnation  claims and  settlements in  anticipation of such
         condemnation  or  taking  shall  be  prosecuted,   at  Senior  Lender's
         election,  by  Senior  Lender  and  all  payments  and  settlements  of
         insurance  claims or condemnation awards or payments in anticipation of
         condemnation or a taking shall be paid to Senior Lender,  to the extent
         provided  for in the Senior Loan Documents,  Prime hereby agreeing that
         its interest in any such proceeds is junior  to the  rights  of  Senior
         Lender  therein and that  Prime  shall  have no right to participate in
         any such adjustment  process, payment or settlement unless and until
         the Senior Indebtedness is paid in full.

              (d)  Prime will not  permit  any  amendment  of the  Junior  Loan
         Documents without the prior written consent of Senior Lender.

              (e)  Prime  will  not  transfer  or assign, either  outright or as
         security for any obligation, any of its powers,  rights or interests in
         the  Junior Loan Documents, without the prior written consent of Senior
         Lender.

27.      REPRESENTATIONS OF PRIME.
         -------------------------

         Prime  hereby  makes  the  following  representations and warranties to
Senior  Lender as of the date  hereof  (but only with  respect to itself):

              (a)  Prime  has  the  power, authority and legal right to execute,
         deliver  and  perform  this  Agreement.  This  Agreement  has been duly
         authorized  by  all  necessary  action  of  Prime,  duly  executed  and
         delivered  by  Prime  and  constitutes valid and binding obligations of
         Prime  enforceable  against Prime in accordance with its terms, subject
         to applicable  bankruptcy, insolvency and similar laws affecting rights
         of creditors  generally, and subject,  as to enforceability, to general
         principles  of equity (regardless of whether enforcement is sought in a
         proceeding in equity or at law).

              (b)  Neither the  execution,  delivery or  performance by Prime of
         this  Agreement  nor  compliance  by  it  with the terms and provisions
         hereof,  (i) will  contravene  any  provision  of  any  applicable law,
         statute, rule or regulation or any  order, writ,  injunction  or decree
         of any  court or  governmental instrumentality,  (ii) will  conflict or
         be  inconsistent  with  or  result  in  any breach of any of the terms,
         covenants,  conditions or provisions of, or constitute a default under,
         or result in the creation or imposition of (or the obligation to create
         or  impose)  any  lien  upon  any  of  the  property or assets of Prime
         pursuant  to  the terms of any material  indenture,  mortgage,  deed of
         trust, credit agreement,  loan agreement,  partnership agreement or any
         other  material  agreement,  contact or  instrument to which Prime is a
         party or by which it or any of its property or assets is  bound  or  to
         which  it  may  be  subject  or  (iii) will violate  any  provision  of
         the organizational documents of Prime.





                                      -14-
<PAGE>
              (c)  No  order,  consent,  approval,   license,  authorization  or
         validation  of,  or  filing,  recording or registration with (except as
         have  been obtained or made prior to the date hereof), or exemption by,
         any  governmental  or  public  body  or  authority,  or any subdivision
         thereof,  is required to authorize, or is required in connection  with,
         (i) the execution, delivery and performance by Prime of this  Agreement
         or  (ii) the  legality,  validity,  binding effect or enforceability of
         this Agreement with respect to Prime.

              (d)  Prime  entered  into  the  transactions  contemplated  by the
         Junior  Loan  Documents  and this Agreement  without  reliance upon any
         information  or  advice  from   Senior  Lender.   Prime  made  its  own
         underwriting  analysis in connection with the Junior Indebtedness,  its
         own  credit  review  of Borrower and Beneficiary and  investigated  all
         matters  pertinent,  in Prime's judgment,  to its determination to make
         the  Junior  Indebtedness  to  Borrower  and to execute and deliver the
         Junior Loan Documents.

              (e)  Neither  Prime nor any of Prime's  Affiliates  (i) is or will
         become  an  "employee  benefit plan" (as defined in Section 3(3) of and
         governed by the  Employee  Retirement Income Security  Act of  1974, as
         amended  ("ERISA"))  or (ii) is or will be engaging in this transaction
         directly  on  behalf  of an "employee benefit plan" as defined therein;
         unless,  if Prime or Prime's  affiliates or principals  are such a plan
         governed by ERISA,  this  Agreement  and  the  performance  of  Prime's
         obligations  hereunder  will  not result in, a "prohibited transaction"
         (as  defined in  Section 406 of ERISA or Section  4975 of the  Internal
         Revenue Code of 1986, as amended).

It shall not be a breach of any of the  representations  and warranties  made in
this  Section 27 if the breach or  inaccuracy  thereof  will not  materially  or
adversely affect the obligations of the warranting party under this Agreement or
its ability to perform such obligations.

28.      SENIOR LENDER REPRESENTATIONS.
         ------------------------------

         Senior Lender hereby makes the following representations and warranties
to Prime as of the date hereof:

              (a)  Senior  Lender has the power,  authority  and legal  right to
         execute,  deliver  and  perform  this  Agreement.  This  Agreement  has
         been  duly  authorized  by all necessary action of Senior Lender,  duly
         executed  and delivered  by  Senior   Lender  and   constitutes   valid
         and  binding obligations of Senior Lender  enforceable  against  Senior
         Lender  in accordance with its terms, subject to applicable bankruptcy,
         insolvency  and  similar  laws affecting rights of creditors generally,
         and subject,  as to  enforceability,  to  general  principles of equity
         (regardless  of whether enforcement is sought in a proceeding in equity
         or at law).

              (b)  Neither  the  execution,  delivery or  performance  by Senior
         Lender  of  this  Agreement  nor  compliance  by  it with the terms and
         provisions  hereof,  (i) will  contravene  any  provision  of  any law,
         statute, rule or regulation or any order,  writ,  injunction  or decree
         of any  court or  governmental instrumentality,  (ii) will  conflict or
         be  inconsistent  with  or  result  in  any breach of any of the terms,

                                      -15-
<PAGE>
         covenants,  conditions or provisions of, or constitute a default under,
         or result in the creation or imposition of (or the obligation to create
         or impose) any lien upon any of the property or assets of Senior Lender
         pursuant  to  the  terms  of any  indenture,  mortgage,  deed of trust,
         credit agreement,  loan agreement,  partnership  agreement or any other
         agreement,  contact  or instrument to which Senior Lender is a party or
         by  which  it  or any of its property or assets is bound or to which it
         may   be   subject  or    (iii)  will  violate  any  provision  of  the
         organizational documents of Senior Lender.

              (c)  No  order,  consent,  approval,  license,   authorization  or
         validation  of,  or  filing,  recording or registration with (except as
         have been obtained or made prior to the date hereof),  or exemption by,
         any  governmental  or  public  body  or  authority,  or any subdivision
         thereof, is required to authorize,  or is required  in connection with,
         (i)  the  execution,  delivery and performance by Senior Lender of this
         Agreement   or   (ii)  the  legality,   validity,   binding  effect  or
         enforceability of this Agreement with respect to Senior Lender.

29.      NATURE OF RELATIONSHIP.
         -----------------------

         Senior  Lender  and  Prime  intend that the  relationship  between them
created by the Prime  Documents  is of senior  lender and junior  lender and not
that of lender and borrower, joint venturers or tenants in common. Senior Lender
and Prime shall file all future federal and state income tax returns in a manner
consistent with the foregoing.

30.      GOVERNING LAW.
         --------------

         This  Agreement  will be  construed  in  accordance  with  the internal
laws of the State of Illinois without regard to principles of conflicts of laws.

31.      NOTICE.
         -------

         Any  notice,  demand,  request,   statement  or  consent made hereunder
shall be in writing,  signed by the party giving such notice,  request,  demand,
statement, or consent, and shall be (a) delivered personally, (b) delivered to a
reputable  overnight  delivery service  providing a receipt (c) deposited in the
United States mail,  postage  prepaid and registered or certified  mail,  return
receipt requested,  or (d) sent by facsimile,  provided a copy of such facsimile
is also  delivered in accordance  with (a), (b) or (c) above,  at the address or
facsimile  number set forth below or to such other  address or facsimile  number
within the  continental  United States of America as may have  theretofore  been
designated  in writing.  The  effective  date of any notice given as provided in
this Section shall be the date of personal  service,  one (1) business day after
delivery to such overnight  delivery  service,  or three (3) business days after
being deposited in the United States mail, whichever is applicable. For purposes
hereof, the addresses and phone numbers are as follows:







                                      -16-
<PAGE>
                  If to Senior Lender:

                        Connecticut General Life Insurance Company
                        c/o CIGNA Investments, Inc.
                        900 Cottage Grove Road
                        Hartford, Connecticut  06152-2319
                        Attn:    Investment Services, S-319
                        Fax:     (860) 726-6328

                  with a copy to:

                        CIGNA Corporation
                        Investment Law Department
                        Mortgage and Real Estate Group
                        900 Cottage Grove Road
                        Hartford, Connecticut  06152-2215
                        Attn:    Real Estate Division, S-215A
                        Fax:     (860) 726-8446

                  with a copy to:

                        Goldberg, Kohn, Bell, Black,
                        Rosenbloom & Moritz, Ltd.
                        55 East Monroe Street
                        Suite 3700
                        Chicago, Illinois  60603
                        Attn:    Stephen B. Bell
                        Fax:     (312) 332-2196

                  If to Prime:

                        Prime Group Realty, L.P.
                        77 West Wacker Drive
                        Suite 3900
                        Chicago, IL  60601
                        Attn:    Jeffrey Patterson
                        Fax:     (312) 917-4230

                  with a copy to:

                        Winston & Strawn
                        35 West Wacker Drive
                        Chicago, IL  60601
                        Attn:    Wayne D. Boberg, Esq.
                        Fax.:    (312) 558-5700

32.      WAIVER.
         -------

         Any term,  condition  or provision  of this  Agreement  may be waived
in writing at any time by the party which is entitled to the benefits thereof.







                                      -17-
<PAGE>
33.      BINDING AGREEMENT.
         ------------------

         This   Agreement   shall   be   binding  upon  the  heirs,   executors,
administrators, personal representatives,  successors and assigns of the parties
hereto; provided, however, the foregoing shall not be deemed or construed to (a)
permit the assignment of either party's rights or obligations  hereunder  except
as provided in Section 36 hereof or (b) confer any right, title, benefit,  cause
of action or remedy upon any person or entity not a party hereto.

34.      CONSTRUCTION.
         -------------

         Whenever  the context  hereof so  requires,  reference  to the singular
shall  include  the plural and the plural  shall  include  the  singular;  words
denoting gender shall be construed to mean the masculine, feminine or neuter, as
appropriate;  and specific  enumeration shall not exclude the general, but shall
be construed as cumulative of the general recitation.  The headings contained in
this  Agreement  are  inserted  for  convenience  only and shall not  affect the
meaning or interpretation of this Agreement or any provision hereof.

35.      SEVERABILITY.
         -------------

         If any clause or  provision  of this  Agreement  is held to be illegal,
invalid or unenforceable  under any law applicable to the terms hereof, then the
remainder of this Agreement shall not be affected  thereby,  and in lieu of each
such  clause  or  provision  of this  Agreement  that  is  illegal,  invalid  or
unenforceable,  such  clause or  provision  shall be  judicially  construed  and
interpreted  to be as similar in substance and content to such illegal,  invalid
or  unenforceable  clause or provision,  as the context thereof would reasonably
suggest, so as to thereafter be legal, valid and enforceable.

36.      COUNTERPARTS.
         -------------

         To  facilitate  execution,  this  Agreement  may be executed in as many
counterparts  as may be convenient or required.  It shall not be necessary  that
the signature and  acknowledgment  of, or on behalf of, each party,  or that the
signature and  acknowledgment of all persons required to bind any party,  appear
on each counterpart.  All counterparts  shall  collectively  constitute a single
instrument.  It shall not be  necessary  in making  proof of this  Agreement  to
produce or account for more than a single counterpart  containing the respective
signatures and acknowledgments of each of the parties hereto.

37.      NO OTHER AGREEMENTS.
         --------------------

         Other  than as set  forth in the  Prime  Documents and in the documents
delivered  pursuant  to this  Agreement,  and the other  Prime  Documents,  this
agreement represents the final agreement between the parties with respect to the
transaction  contemplated  herein,  supersedes any and all prior discussions and
agreements (written or oral) between Prime and Senior Lender with respect to the
transaction  contemplated herein, the Property and the Junior Loan Documents and
may not be contradicted by evidence of prior, contemporaneous or subsequent oral
agreements of the parties.


                                      -18-
<PAGE>
38.      TIME OF THE ESSENCE.
         --------------------

         Time  is  of  the  essence  in  the  execution  and performance of this
Agreement and of each provision hereof.

39.      RULE OF CONSTRUCTION.
         ---------------------

         The  parties  acknowledge  that each party and its counsel has reviewed
this  Agreement,  and the parties hereby agree that normal rules of construct to
the effect that any  ambiguities  are to be resolved  against the drafting party
shall not be employed in the  interpretation of this Agreement or any amendments
or exhibits hereto.

40.      SATURDAY, SUNDAY OR LEGAL HOLIDAY.
         ----------------------------------

         If  any  date  set  forth  in this Agreement for the performance of any
obligation  by Prime or Senior  Lender or for the  delivery  of any  document or
notice  should  be on other  than a  Business  Day,  the  compliance  with  such
obligation or delivery shall be deemed acceptable on the next following Business
Day. For purposes of this Agreement,  the term "Business Day" shall mean any day
on which banks and federal savings associations in Illinois are generally open.

41.      AMENDMENTS.
         -----------

         This  Agreement  shall  not  be  amended  except by a writing signed on
behalf of all of the parties to this Agreement.

42.      NO THIRD PARTY BENEFICIARIES; NO RELATIONSHIP.
         ----------------------------------------------

         No person or entity not a party to this  Agreement shall have any third
party beneficiary  claim or other right hereunder or with respect thereto.  This
Agreement  shall not establish any  fiduciary,  joint  venture,  partnership  or
similar relationship between Prime and Senior Lender.

43.      EXHIBITS.
         ---------

         Each exhibit  referred to in this Agreement is attached hereto and each
such exhibit is hereby  incorporated  by reference  and made a part hereof as if
fully set forth herein.

44.      JURY WAIVER; VENUE.
         -------------------

         PRIME   AND  SENIOR  LENDER  DO  HEREBY   KNOWINGLY,   VOLUNTARILY  AND
INTENTIONALLY  WAIVE  THEIR  RIGHT  TO A  TRIAL  BY  JURY  WITH  RESPECT  TO ANY
LITIGATION  BASED HEREON,  OR ARISING OUT OF, UNDER OR IN  CONNECTION  WITH THIS
AGREEMENT,  ANY DOCUMENTS  EXECUTED IN CONNECTION  WITH THIS  AGREEMENT,  OR ANY
COURSE OF CONDUCT, COURSE OF DEALING, STATEMENT (WHETHER ORAL OR WRITTEN) OR ANY
ACTION OF ANY PARTY  ARISING OUT OF OR RELATED IN ANY MANNER TO THIS  AGREEMENT,
THE SENIOR LOAN,  THE JUNIOR LOAN,  THE SENIOR LOAN  DOCUMENTS,  THE JUNIOR LOAN
DOCUMENTS, OR THE PROPERTY (INCLUDING WITHOUT LIMITATION,  ANY ACTION TO RESCIND

                                      -19-
<PAGE>
OR  CANCEL  THIS  AGREEMENT  AND ANY  CLAIMS  OR  DEFENSES  ASSERTING  THAT THIS
AGREEMENT  WAS   FRAUDULENTLY   INDUCED  OR  IS  OTHERWISE   VOID  OR  VOIDABLE)
(COLLECTIVELY,  AN "ACTION"). THIS WAIVER IS A MATERIAL INDUCEMENT FOR PRIME AND
SENIOR LENDER TO ENTER INTO THIS  AGREEMENT AND SHALL SURVIVE THE CLOSING OR ANY
TERMINATION OF THIS AGREEMENT. PRIME AND SENIOR LENDER HEREBY IRREVOCABLY SUBMIT
TO THE JURISDICTION OF ANY UNITED STATES FEDERAL OR ILLINOIS STATE COURT LOCATED
IN COOK COUNTY,  ILLINOIS IN ANY ACTION AND EACH PARTY AGREES THAT ALL CLAIMS IN
RESPECT  OF ANY SUCH  ACTION  MAY BE HEARD  AND  DETERMINED  BY SUCH  COURT  AND
IRREVOCABLY WAIVES ANY OBJECTION IT MAY NOW OR HEREAFTER HAVE AS TO THE VENUE OF
ANY SUCH  ACTION  BROUGHT IN SUCH A COURT OR THAT SUCH COURT IS AN  INCONVENIENT
FORUM.

45.      ASSIGNMENT.
         -----------

         Prime  may  not  assign  this  Agreement  or  any right,  liability, or
obligation  hereunder without the prior written consent of Senior Lender,  which
may be  withheld  in Senior  Lender's  absolute  discretion.  Senior  Lender may
transfer, by assignment,  participation or otherwise, the Senior Loan Documents,
or any interest therein and any or all of its right, liabilities, or obligations
under  the  Prime  Documents  to any  one or more  of its  Affiliates,  separate
accounts, nominees and subsidiaries or to any other person or entity.

46.      ATTORNEYS' FEES.
         ----------------

         References  to attorneys'  fees  or  the like in this  Agreement and in
any of the other Prime  Documents  shall include (a) the reasonable fees charged
by attorneys who are employees of Senior Lender or any of its Affiliates and (b)
reasonable attorneys' fees incurred in any trial and appellate proceedings.

47.      PRIME EXCULPATION.
         ------------------

         Notwithstanding   any   provision   contained   in  this  Intercreditor
Agreement,  Prime shall have no personal  liability for the  performance  of its
obligations  hereunder  (including  without limitation the obligation to pay off
the Senior Interest under Section 6 hereof). In the event of a default by Prime,
Senior Lender shall  nonetheless be entitled to exercise all remedies  available
under the Prime  Documents  against the Property,  the Gross  Revenues and other
security as are set forth  therein or as may  otherwise be available  under law.
The  foregoing  shall not be construed to limit the personal  liability of Prime
under  the  Recourse  Indemnity  Agreement,  the  Environmental  Indemnification
Agreement,  the  Blocked  Accounts  Agreement  and  any  other  document  now or
hereafter  delivered by Prime which does not expressly exculpate Prime from such
liability.

48.      SENIOR LENDER EXCULPATION.
         --------------------------

         Notwithstanding  any provision contained in this Agreement or the other
Prime  Documents to the contrary,  the  obligations  of Senior Lender under this
Intercreditor  Agreement  and the  Prime  Documents  shall be  enforceable  only
against the  interest  of Senior  Lender in the Senior  Loan  Documents  as such
interest may exist from time to time.



                                      -20-
<PAGE>
                  IN WITNESS  WHEREOF,  the parties  hereto have  executed  this
Agreement on the day and year first above written.

                                       PRIME GROUP  REALTY,  L.P.,  a
                                       Delaware  limited  partnership

                                       By   PRIME GROUP REALTY TRUST, a
                                            Maryland real estate investment
                                            trust, its managing general partner

                                            By  \s\ Jeffery A. Patterson
                                                --------------------------------
                                            Its Executive Vice President
                                                --------------------------------

                                       CONNECTICUT GENERAL LIFE INSURANCE
                                       COMPANY, a Connecticut corporation

                                       By   CIGNA INVESTMENTS, INC., a Delaware
                                            corporation, its authorized agent

                                            By  \s\ Patrick H. Thompson
                                                --------------------------------
                                            Its Vice President
                                                --------------------------------

































                                      -21-
<PAGE>
                                   SCHEDULE 1

                                  DEFINED TERMS
                                  -------------

1.   "ACCRUED  OBLIGATIONS"  shall mean all accrued and unpaid Monthly Secondary
     Payments, Default Interest, all outstanding Late Charges, Collection Costs,
     Administrative  Charges  and all  accrued  obligations  under the  Recourse
     Indemnity Agreement and the Environmental Indemnification Agreement.

2.   "ADMINISTRATIVE COSTS" shall have the meaning set forth in Section 19(b) of
     this Agreement.

3.   "AFFILIATE" shall mean with respect to any person:  any individual  related
     by blood or marriage to such person or any person  controlling,  controlled
     by or under  common  control with such person  ("control"  and forms of the
     word mean (i) the possession, direct or indirect, of the power to direct or
     cause the  direction of the  management  and policies of a person,  whether
     through the ownership of voting securities,  by contract or otherwise;  and
     (ii) the ownership or beneficial ownership of equity interests, directly or
     indirectly,  representing  fifty  percent  or  more  ownership  (on a fully
     diluted basis) in a person or rights, warrants, or options to purchase such
     ownership (whether or not currently exercisable)).

4.   "APPLIED  AMOUNT"  shall  have  the  meaning  set  forth  in the  Lock  Box
     Agreement.

5.   "BENEFICIAL INTEREST" shall mean the beneficial interest in the Fee Owner.

6.   "BENEFICIARY" shall mean Continental Towers Associates-I,  L.P. an Illinois
     limited partnership, and any successor beneficiary of either Fee Owner.

7.   "BLOCKED  ACCOUNTS"  means  collectively  the  Re-Leasing  Account  and the
     Capital  Improvement Account created and maintained pursuant to the Blocked
     Accounts Agreement.

8.   "BLOCKED  ACCOUNTS  AGREEMENT"  means  that  certain  Subordinate  Lender's
     Blocked  Accounts  Agreement  of even date  herewith  among  Lock Box Bank,
     Senior Lender, Prime and JTD.

9.   "BORROWER" means collectively the Fee Owners.

10.  "CAPITAL COSTS" shall have the meaning set forth in the Senior Mortgage.

11.  "CAPITAL LOANS" shall have the meaning set forth in the 1998 Agreement.

12.  "CLOSING" shall mean the date of disbursement of the Senior Loan.

13.  "CLOSED  PERIOD"  shall mean the period  commencing  on the date hereof and
     ending on April 30, 2000.

14.  "COLLATERAL"   means  all  present  and  future   assets  of  Borrower  and
     Beneficiary,   including  all  of  Borrower's  and  Beneficiary's  personal
     property  and real  estate,  including,  to the  extent  any  Borrower  has
     interest therein, the Lock Box Accounts.

15.  "COLLECTION  COSTS"  shall have the meaning  set forth in Section  19(d) of
     this Agreement.
                                       -1-
<PAGE>
16.  "CURE NOTICE" shall have the meaning set forth in Section 17(a)(ii) of this
     Agreement.

17.  "DEED IN LIEU  NOTICE"  shall have the  meaning  set forth in Section 26 of
     this Agreement.

18.  "DEFAULT  CHARGES"  shall mean  collectively  all Prime  Interest,  Default
     Interest,  Late Charges,  Protective  Advances and Collection Costs payable
     under this Agreement or any of the other Prime Documents.

19.  "DEFAULT  INTEREST"  shall have the meaning set forth in Section 19 of this
     Agreement.

20.  "DEFAULT RATE" shall mean an annual rate of 11.22%  calculated on the basis
     of a 360 day year.

21.  "DEFAULT SALE NOTICE" shall have the meaning set forth in Section 9 of this
     Agreement.

22.  "DEFERRED INTEREST" shall have the meaning set forth in the Senior Note.

23.  "DEFERRED PAYMENTS" shall have the meaning set forth in the Senior Note.

24.  "EASEMENTS"  shall  have  the  meaning  set  forth  in  Section  15 of this
     Agreement.

25.  "ENFORCEMENT  ACTION" means the commencement of the exercise of any default
     or  other  contract  remedies  against   Borrower,   Beneficiary  or  both,
     including,  without  limitation,  the  commencement  of any  litigation  or
     proceeding,  including the commencement of any foreclosure proceeding,  the
     exercise of any power of sale, the sale by  advertisement,  the taking of a
     deed or assignment in lieu of  foreclosure,  the obtaining of a receiver or
     the  taking of any  other  enforcement  action  against,  or the  taking of
     possession or control of, any of the Property,  but  specifically  excludes
     Borrower, Beneficiary or both, the assertion or enforcement of any right of
     Prime  to  receive  payment  from  proceeds  of a  foreclosure  sale of the
     Property incident to foreclosure of the liens or security  interests of the
     Senior Loan Documents  which may remain after payment of costs and expenses
     of such  foreclosure  and  payment and  satisfaction  in full of the Senior
     Indebtedness,  and the filing of claims in any Insolvency Proceeding as may
     be required to protect and preserve the right of Prime or Senior  Lender to
     participate in such Insolvency Proceeding as creditor and to participate in
     distributions  of assets of Borrower  in said  Insolvency  Proceeding  with
     respect  to  the  Junior  Indebtedness  or  the  Senior  Indebtedness,   as
     applicable,  but  subject in all  respects  to the rights of Senior  Lender
     under and as provided in this Agreement and without in any way impairing or
     affecting  the  right of Senior  Lender to  require  Prime to  perform  and
     observe their  respective  covenants,  undertakings and agreements of Prime
     under and as provided in this Agreement.

26.  "ENVIRONMENTAL  INDEMNIFICATION  AGREEMENT"  shall  mean the  Environmental
     Indemnification  Agreement  of even  date  herewith  executed  by  Prime in
     respect of the Property.

27.  "ESCROW  DEPOSITS"  shall  mean all  deposits  required  under the  Blocked
     Accounts Agreement.


                                      -2-
<PAGE>
28.  "EVENT OF  DEFAULT"  shall have the meaning set forth in Section 17 of this
     Agreement.

29.  "EXCESS  AMOUNT"  shall  have the  meaning  set forth in  Section 9 of this
     Agreement.

30.  "EXTRAORDINARY  PAYMENT" shall have the meaning set forth in the Management
     Agreement.

31.  "FEE OWNERS"  shall mean the two land trusts  identified as Trust 40935 and
     Trust 5602 in EXHIBIT 43 or any successor  owner of any interest in the fee
     title to the Property.

32.  "FINAL  PAYOFF  DATE" shall have the meaning set forth in Section 6 of this
     Agreement.

33.  "FUNDS" shall mean all Gross Revenues,  and all other revenues  relating to
     the Property including lease termination payments, advance rental payments,
     Net Proceeds and Special Service Payments.

34.  "GENERAL  PARTNER"  shall mean CTA  Partner,  L.L.C.,  a  Delaware  limited
     liability  company,  or other holder of a general  partnership  interest or
     other managing interest in Beneficiary.

35.  "GROSS REVENUES" shall have the meaning set forth in the Senior Note.

36.  "INSOLVENCY  PROCEEDING"  means any proceeding under Title 11 of the United
     States  Code  (11  U.S.C.  Sec.  101 et.  seq.)  or any  other  insolvency,
     liquidation,   reorganization  or  other  similar   proceeding   concerning
     Borrower,  any action  for the  dissolution  of  Borrower,  any  proceeding
     (judicial  or  otherwise)  concerning  the  application  of the  assets  of
     Borrower,  for the  benefit of its  creditors,  the  appointment  of or any
     proceeding seeking the appointment of a trustee,  receiver or other similar
     custodian for all or any substantial  part of the assets of Borrower or any
     other action concerning the adjustment of the debts of Borrower.

37.  "INTEREST" shall have the meaning set forth in the Senior Note.

38.  "INTEREST RATE" shall have the meaning set forth in the Senior Note.

39.  "JTD"  means  Julian,  Toft & Downey,  Incorporated  or such  other  entity
     designated  by Senior  Lender to perform the functions of JTD in connection
     with the Loan Documents,  this Intercreditor  Agreement and the other Prime
     Documents.

40.  "JUNIOR  INDEBTEDNESS"  means all principal,  interest,  default  interest,
     prepayment  premium,  collection  costs and other amounts  outstanding from
     time to time under the Junior Loan Documents.

41.  "JUNIOR  LOAN"  means the loan  evidenced  and  secured by the Junior  Loan
     Documents.

42.  "JUNIOR LOAN AGREEMENT" shall have the meaning set forth in EXHIBIT 1-43.

43.  "JUNIOR LOAN  DOCUMENTS"  means the  documents  listed on EXHIBIT  1-43, as
     amended  from time to time  subject  to the  limitations  set forth in this
     Agreement.

                                      -3-
<PAGE>
44.  "JUNIOR  SECURITY"  shall mean all real and personal  property at any times
     pledged  to  Senior  Holder  to  secure  the  performance  by  Prime of its
     obligations under the Prime Security Documents.

45.  "LATE  CHARGE"  shall have the meaning  set forth in Section  19(a) of this
     Agreement.

46.  "LOCK BOX ACCOUNT"  means the deposit  account in the name of Senior Lender
     established  pursuant to the Lock Box Agreement at Lock Box Bank into which
     all rent and other revenues of the Property will be deposited.

47.  "LOCK BOX ACCOUNTS" means  collectively  the Lock Box Account,  Real Estate
     Tax Escrow Account and the Working  Capital  Account created and maintained
     under the Lock Box Agreement.

48.  "LOCK BOX  AGREEMENT"  means the Lock Box  Agreement of even date  herewith
     among Lock Box Bank, Senior Lender, Borrower, Beneficiary, Manager and JTD.

49.  "LOCK BOX BANK" means LaSalle  National  Bank or any  successor  thereto or
     assignee thereof under the Lock Box Agreement or Blocked Accounts Agreement
     and any bank serving  similar  functions under any replacement of either or
     both such agreements.

50.  "MANAGEMENT  AGREEMENT" shall mean the Management  Agreement dated December
     12,  1997  among  Beneficiary  and  Manager,  together  with the  Agreement
     Pertaining to Management  Agreement of even date  herewith  among  Manager,
     Beneficiary, and Senior Lender.

51.  "MANAGER"  shall  mean  Prime  Group  Realty  Services,  Inc.,  a  Delaware
     corporation, or the manager approved by Senior Lender.

52.  "MEMBER"  shall mean  Richard S. Curto and his spouse or other holder of an
     equity interest in General Partner.

53.  "MINIMUM PAYMENT" shall have the meaning set forth in the Senior Note.

54.  "MONTHLY  OPERATING  REPORT"  shall  have  the  meaning  set  forth  in the
     Management Agreement.

55.  "MONTHLY  SECONDARY  PAYMENT" shall have the meaning set forth in Section 5
     of this Agreement.

56.  "NECESSARY CAPITAL  EXPENDITURES"  shall mean such capital  expenditures as
     are reasonably  determined by Senior Lender to be necessary to maintain the
     Property in first class condition.  including without limitation Re-Leasing
     Costs and Capital Costs.

57.  "NET  PROCEEDS"  shall  mean all  insurance  proceeds  and  eminent  domain
     compensation and awards  attributable to the Property which are not used to
     repair or restore the Property pursuant to the Senior Loan Documents.

58.  "OUTSTANDING BALANCE" shall have the meaning set forth in the Senior Note.

59.  "PARTNER LOANS" shall mean any "Partner Loans" as referred to in the Junior
     Loan Agreement.

60.  "PAYOFF  AMOUNT"  shall mean the aggregate of the  Outstanding  Balance and
     Accrued Obligations.
                                      -4-
<PAGE>
61.  "PERSON"  means  any  natural  person,   corporation,   firm,  association,
     government,  governmental agency or any other entity,  whether acting in an
     individual, fiduciary or other capacity.

62.  "PLAZA REPAIRS" shall have the meaning set forth in the Senior Mortgage.

63.  "PREPAYMENT PREMIUM" shall have the meaning set forth in the Senior Note.

64.  "PRIME" means Prime and any subsequent holder of any interest in the Junior
     Loan or the Junior Loan Documents.

65.  "PRIME   DOCUMENTS"  shall  mean  this  Agreement;   the  Blocked  Accounts
     Agreement;    the   Recourse   Indemnity   Agreement;   the   Environmental
     Indemnification  Agreement;  the Collateral Assignment of Loan Documents of
     even date herewith  executed by Prime in favor of Senior  Lender;  and such
     all other  documents  executed by Prime or its  Affiliates and delivered to
     Senior Lender in connection herewith and therewith, including all documents
     securing or  perfecting  security  for Prime's  obligations  hereunder  and
     thereunder.

66.  "PRIME  INTEREST"  shall mean all  interest,  including  Default  Interest,
     imposed under any of the Prime Documents.

67.  "PROPERTY"  means the real estate  commonly  known as  Continental  Towers,
     Rolling  Meadows,  Illinois which is legally  described on EXHIBIT 1-67 and
     all  improvements  now or hereafter  located thereon and all  appurtenances
     thereto.

68.  "PROTECTIVE  ADVANCES" shall have the meaning set forth in Section 19(c) of
     this Agreement.

69.  "RECOURSE  INDEMNITY  AGREEMENT" shall mean that certain Recourse Indemnity
     Agreement of even date herewith delivered by Prime to Senior Lender.

70.  "RELEASE  ACTIONS"  shall mean (i) execution of  instruments  of release or
     terminations,  as  appropriate,  of the  Senior  Loan  Documents  and Prime
     Documents  and (ii) release or transfer of all cash security for the Senior
     Loan   Documents   and   Prime   Documents,    except   the   Environmental
     Indemnification  Agreement  shall not be released or  terminated  but shall
     instead survive the performance of the Release Actions.

71.  "RE-LEASING COSTS" shall have the meaning set forth in the Senior Mortgage.

72.  "RENT ROLL" shall mean a rent roll on the form previously  submitted to and
     approved by Senior Lender.

73.  "REQUIRED  CAPITAL  IMPROVEMENTS"  shall have the  meaning set forth in the
     Senior Mortgage.

73A. "RESET  AMENDMENT"  shall have the  meaning  set forth in Section 7 of this
     Agreement.

74.  "RESET AMORTIZATION SCHEDULE" shall have the meaning set forth in Section 7
     of this Agreement.

75.  "RESET  NOTICE"  shall  have the  meaning  set  forth in  Section 7 of this
     Agreement.

                                      -5-
<PAGE>
76.  "RESET  PERIOD"  shall  have the  meaning  set  forth in  Section 7 of this
     Agreement.

77.  "RESET/PAYOFF DATE" shall mean May 1, 2005.

78.  "RESET  RESPONSE"  shall  have the  meaning  set forth in Section 7 of this
     Agreement.

79.  "RESET  SCHEDULED  PAYMENT" shall mean the fixed level payment  required to
     amortize the Outstanding  Balance in accordance with the Reset Amortization
     Schedule at the Reset Interest Rate.

80.  "RESET  SECONDARY  PAYMENT AMOUNT" shall mean the excess of Reset Scheduled
     Payment over Minimum Payments due during the Reset Term.

81.  "RESET  TERMS"  shall  have the  meaning  set  forth in  Section  7 of this
     Agreement.

82.  "SCHEDULED  PAYMENT" shall mean $540,656.41 per month (being the sum of the
     Minimum  Payment  and the  Monthly  Secondary  Payment)  which is an amount
     sufficient  to  amortize  the Senior  Loan over a period of 25 years at the
     Interest Rate.

83.  "SECURITY"  shall  mean  all  real  and  personal  property,  tangible  and
     intangible,  in which security  interests have been granted as security for
     the Senior Loan or Prime's obligations under this Intercreditor Agreement.

84.  "SENIOR   ACCELERATION"   shall  mean  the   acceleration   of  the  Senior
     Indebtedness following a Senior Event of Default.

85.  "SENIOR  DEFAULT"  means the failure by  Borrower to pay Senior  Lender any
     amount  when due under the  Senior  Loan  Documents  or the  occurrence  or
     existence  of any other event or  circumstance  which,  with the passage of
     time or the giving of notice,  or both,  would constitute a Senior Event of
     Default.

86.  "SENIOR  DEFAULT  CHARGES"  shall  mean all late  charges  and  default  in
     interest,  collection charges,  administrative  charges or the like arising
     under the Senior Loan Documents,  including  Default Interest as defined in
     the Senior Note.

87.  "SENIOR EVENT OF DEFAULT"  means an "EVENT OF DEFAULT" as defined in any of
     the Senior Loan Documents.

88.  "SENIOR  INDEBTEDNESS"  means all principal,  interest,  default  interest,
     prepayment  premium,  collection  costs and other amounts  outstanding from
     time to time under the Senior Loan Documents.

89.  "SENIOR LOAN" shall have the meaning set forth in the Senior Note.

90.  "SENIOR LOAN  DOCUMENTS"  means the  documents  listed on EXHIBIT  1-90, as
     amended  from  time to time  subject  to the  limitations  set forth in the
     Agreement.

91.  "SENIOR MORTGAGE" shall have the meaning set forth in EXHIBIT 1-90.

92.  "SENIOR NOTE" shall have the meaning set forth in EXHIBIT 1-90.

                                      -6-
<PAGE>
93.  "SPECIAL  SERVICE  PAYMENTS"  shall  have  the  meaning  set  forth  in the
     Management Agreement.

94.  "SNDAS" shall mean Subordination, Non-Disturbance and Attornment Agreements
     with tenants of the Property on a form previously approved by Senior Lender
     with such changes as are reasonably acceptable to Senior Lender.

95.  "TAX INDEMNITY  AGREEMENT" shall mean that certain Tax Indemnity  Agreement
     dated November 17, 1997 among Prime, Roland E. Casati and Richard A. Heise.

96.  "TENANT ESTOPPELS" shall mean Tenant Estoppel  Certificates from tenants of
     the  Property  on a form  previously  approved  by Senior  Lender with such
     changes as are reasonably acceptable to Senior Lender.

97.  "TERM" shall mean the period from the date hereof through and including the
     Final Payoff Date.

98.  "TIA PERIODIC  PAYMENTS"  shall mean the payments to be made after the date
     hereof by Roland E. Casati and Richard A. Heise pursuant to Sections 11 and
     12 of the Tax Indemnity Agreement.

99.  "TRANSFER  ACTIONS" shall mean (i) execution of instruments of transfer and
     endorsements,  as appropriate,  of the Senior Loan Documents and the Senior
     Lender's  title  policy,  in all cases without  recourse,  (ii) transfer to
     Prime of all  balances  in the Blocked  Accounts,  and (iii)  execution  of
     instruments of termination of this Agreement and the other Prime Documents,
     except the Environmental  Indemnification Agreement shall not be terminated
     but shall  instead  survive the  performance  of the Transfer  Actions.  In
     connection with the performance of the Transfer Actions, Senior Lender will
     be obligated to warrant only that it has not encumbered or transferred  the
     Senior Loan Documents.

100. "WIRE  TRANSFER"  shall mean  transfer of  immediately  available  funds by
     federal wire to an account  designated by the recipient in a written notice
     to the transferor.

101. "1998 AGREEMENT" shall have the meaning set forth in Exhibit 1-43.





















                                      -7-
<PAGE>
                                    EXHIBIT 7

                            RESET RECOURSE LIABILITY
                            ------------------------

                  In the event that the Reset  Terms are  accepted  pursuant  to
Section 7, the  Recourse  Indemnity  Agreement  will be  modified as follows and
re-executed by Prime:

                  (i)   The  "CONTROL  PERIOD" will commence on the Reset/Payoff
         Date.

                  (ii)  The  starting  balance  of  the  "REMAINING   DEFICIENCY
         AMOUNT"  shall  equal the  product of the number of months in the Reset
         Period times the Monthly Secondary Payment due during the Reset Period.

                  (iii) The  dollar  amount  set  forth  in  Section 2(n) of the
         Recourse Indemnity Agreement shall be the Reset Scheduled Payment minus
         $466,667.

The original Recourse Indemnity  Agreement will remain in effect with respect to
any event or occurrence which occurred prior to the Reset/Purchase Date.




































                                      -1-
<PAGE>
                                   EXHIBIT 15

                              PRELIMINARY SITE PLAN
                              ---------------------


                               [Exhibit Omitted]



















































                                      -1-
<PAGE>
                                  EXHIBIT 1-43

                              JUNIOR LOAN DOCUMENTS
                              ---------------------

                  1.           Loan  Modification  and Amended and Restated Loan
Agreement dated as of June 1, 1995 (as amended, the "JUNIOR LOAN AGREEMENT"), by
and among American  National Bank and Trust Company of Chicago,  not personally,
but as Trustee of Trust No. 40935 ("TRUST 40935"), Continental Towers Associates
- -  I  ("CTA"),  Roland  E.  Casati  ("CASATI"),   Richard  E.  Heise  ("HEISE"),
Casati-Heise  Partnership  ("C/H")  and  General  Electric  Capital  Corporation
("GECC"),  which was  recorded  in the  office of the  Recorder  of Deeds,  Cook
County, Illinois ("RECORDER'S OFFICE") on August 17, 1995 as Doc. No. 95545031.

                  2.          First Amendment to Loan  Modification  and Amended
and Restated Loan Agreement by and among Trust 40935,  CTA,  Casati,  Heise, C/H
and GECC,  which was recorded in the  Recorder's  Office on December 17, 1997 as
Document No. 97947240.

                  3.           Amended and Restated  First  Mortgage dated as of
December 1, 1991 from Trust  40935 and joined in by C/H to GECC and  recorded in
the  Recorder's  Office  as  Document  No.  92001888,  as  amended  by the First
Amendment and the Second Amendment (together with the Supplemental  Mortgage and
as either has been amended, the "JUNIOR MORTGAGE").

                  4.            Assignment  of  Leases  and  Rents  dated  as of
December 1, 1991,  from Trust 40935 and joined in by C/H to GECC and recorded in
the Recorder's  Office as Document  92001889,  as amended by the First Amendment
and the Second Amendment.

                  5.          First  Amendatory  Agreement dated as of April 30,
1993 (the "FIRST  AMENDMENT")  executed and  delivered by and among the Parties,
which First  Amendment was duly filed for record and recorded in the  Recorder's
Office as Document No. 93-434372 on June 9, 1993.

                  6.          Second  Amendatory  Agreement dated as of November
1,  1994  (the  "SECOND  AMENDMENT")  executed  and  delivered  by and among the
Parties,  which Second  Amendment  was duly filed for record and recorded in the
Recorder's Office as Document No. 94084292, on December 30, 1994.

                  7.          Supplemental First Mortgage and Security Agreement
dated June 1, 1995,  from First  Bank,  N.A.  as  successor  trustee to National
Boulevard Bank of Chicago,  not  personally,  but solely as Trustee of Trust No.
5602 ("TRUST 5602"),  with joinder by CTA, in favor of GECC,  which was recorded
in the  Recorder's  Office  on  August  17,  1995  as  Doc.  No.  95545032  (the
"SUPPLEMENTAL MORTGAGE").

                  8.           1997  Promissory  Note ("1997  PROMISSORY  NOTE")
dated October 1, 1991 Amended and Restated as of the Effective Date December 12,
1997 in the amount of $163,103,099.24 made by Trust 40935 in favor of GECC.

                  9.          Hazardous  Substances Indemnity Agreement dated as
of October 1, 1991, as amended by the Loan Agreement.

                  10.            All  UCC  financing   statements   executed  in
connection with any of the foregoing.


                                       -1-
<PAGE>
                  11.           1998  Agreement  of  even  date  herewith  among
Mortgagor, Beneficiary and Prime (the "1998 AGREEMENT").



                   AND ITEMS LISTED ON ATTACHED PAGES 3 AND 4

                                [Exhibit Omitted]


















































                                       -2-
<PAGE>
                                  EXHIBIT 1-67

                                LEGAL DESCRIPTION
                                -----------------

PARCEL 1

Lots 1 and 2 in  Casati-Heise  Subdivision,  being a subdivision  of part of the
Northeast 1/4 of Section 17 and part of the Northwest 1/4 of Section 16, both in
Township  41  North,  Range 11 East of the  Third  Principal  Meridian,  in Cook
County,  Illinois  according to the plat thereof  recorded  December 27, 1988 as
Document Number 88-592766, in Cook County, Illinois.

PARCEL 2

Easements  appurtenant to and for the benefit of Parcel 1 as created and granted
and set forth in Easement  Agreement  dated as of  September  23, 1977  recorded
October 10, 1978 as Document  Number  24662689  and as amended by  Amendment  to
Easement  Agreement  dated as of May 15, 1980 recorded June 10, 1980 as Document
Number 25482426 upon, over and under Parcels 1, 2 and 3 and over, upon and under
portions of Lots 1 to 6,  inclusive,  in Heise's  Subdivision,  a subdivision of
part of the  Northwest 1/4 of Section 16,  Township 41 North,  Range 11, East of
the Third  Principal  Meridian in Cook County,  Illinois,  according to the plat
thereof recorded  December 23, 1977 as Document 24119807 and also over, upon and
under  portions of that part of the  Northeast 1/4 of Section 17 and part of the
Northwest  1/4 of Section  16,  Township  41 North,  Range 11, East of the Third
Principal Meridian, in Cook County, Illinois described as follows:

Commencing  at the  Northeast  corner of the  Northeast  1/4 of said Section 17;
thence  Southerly  along the East line of said Northeast 1/4 of Section 17, 80.0
feet to the Southerly  right-of-way  of Golf Road (State Route 58), as dedicated
and recorded  September  24, 1929 as Document  Numbers  10488005  and  10488006;
thence South 89 degrees 08 minutes  West along said  Southerly  right-of-way  of
Golf Road (State Route 58), 691.05 feet for a point of beginning; thence South 0
degrees 52 minutes  East,  265.0 feet;  thence  South 89 degrees 08 minutes West
parallel with said  Southerly  right-of-way  Golf Road (State Route 58),  196.11
feet;  thence North 0 degrees 27 minutes 20 seconds East  parallel with the West
line of Schwake's  Subdivision,  recorded August 11, 1970 as Document  21235091,
now vacated 265.07 feet to said Southerly right-of-way of Golf Road (State Route
58); thence North 89 degrees 08 minutes East, along said Southerly  right-of-way
of Golf Road (State Route 58), 190.0 feet to the point of beginning, all in Cook
County,  Illinois,  for  the  operation,   maintenance,   repairs,  replacement,
relocation  and removal of a water supply line,  sewer and other  utilities,  in
Cook County, Illinois.

PARCEL 3

Easements  appurtenant to and for the benefit of Parcel 1 as created and granted
and set forth in  Reciprocal  Easement  and Common  Wall  Agreement  dated as of
September 23, 1977 and recorded  October 10, 1978 as Document  Number  24662688,
and as amended by Amendment  thereto  dated as of November 21, 1979 and recorded
December 17, 1979 as Document  Number 25284791 upon, over and under Parcels 1, 2
and 3 and over, and upon and under portions of that part of the Northeast 1/4 of
Section 17 and part of the Northwest 1/4 of Section 16, Township 41 North, Range
11, East of the Third Principal Meridian, in Cook County,  Illinois described as
follows:


                                       -1-
<PAGE>
Commencing  at the  Northeast  corner of the  Northeast  1/4 of said Section 17;
thence  Southerly  along the East line of said Northeast 1/4 of Section 17, 80.0
feet to the  Southerly  right of way of Golf Road (State  Route 58) as dedicated
and recorded September 24, 1929, as Document 10488005 and 10488006; thence South
89 degrees 08 minutes West along said Southerly right of way of Golf Road (State
Route  58),  691.05  feet for a point of  beginning;  thence  South 0 degrees 52
minutes East, 265.0 feet; thence South 89 degrees 08 minutes West, parallel with
said  Southerly  right of way of Golf Road (State Route 58) 196.11 feet;  thence
North 0 degrees  27  minutes 20  seconds  East,  parallel  with the West line of
Schwake's  Subdivision  recorded  August  11,  1970 as  Document  21235091,  now
vacated,  265.07 feet to said  Southerly  right of way of Golf Road (State Route
58) thence North 89 degrees 08 minutes East,  along said Southerly  right of way
of Golf Road (State Route 58) 109.0 feet to the point of beginning,  all in Cook
County, Illinois, for operation,  maintenance,  repair, replacement,  relocation
and removal of a water supply line,  sewers and other utilities,  and for use of
parking  areas,  roadways  and  walkways  to  provide  ingress  and  egress  for
pedestrians, vehicles, and for water supply, sewers and common walls.

PARCEL 4

Lot 3 in Casati-Heise Subdivision,  being a subdivision of part of the Northeast
1/4 of Section 17 and part of the  Northwest 1/4 of Section 16, both in Township
41 North, Range 11, East of the Third Principal Meridian,  according to the plat
thereof  recorded  December  27,  1988 as  Document  88592766,  in Cook  County,
Illinois.

































                                      -2-
<PAGE>
                                 EXHIBIT 1-90

                              SENIOR LOAN DOCUMENTS
                              ---------------------

1.   Promissory  Note of even date  herewith from Fee Holder to the Mortgagee in
     the amount of $75,000,000.

2.   1998 Lock Box and Block Accounts Agreement of even date herewith,  executed
     by Lock Box Bank,  Fee Holder,  Beneficiary,  Manager,  and Julian,  Toft &
     Downey.

3.   Agreement  Pertaining  to  Management  Agreement  of  even  date  herewith,
     executed by Beneficiary, Manager, and the Mortgagee.

4.   First Mortgage of even date herewith, from the Mortgagor to the Mortgagee.

5.   Assignment  of Rents  and  Leases of even date  herewith,  executed  by the
     Mortgagor and the Mortgagee.

6.   UCC Financing Statements executed by Beneficiary.

7.   UCC Financing Statements executed by Mortgagor.

8.   Borrower  Parties Estoppel  Certificate of even date herewith,  executed by
     Fee Holder, Beneficiary, Casati, Heise, C/H Partnership, and Mortgagee.

9.   Hazardous Substances Indemnity Agreement of even date herewith, executed by
     Beneficiary.

10.  Certificate  of  Casati-Heise  of  even  date  herewith,  executed  by  C/H
     Partnership and Junior Holder.

11.  All other documents,  agreements and instruments evidencing, securing or in
     any way relating to the Loan,  together with all  amendments  thereto which
     may hereafter exist.





















                                      -1-

<PAGE>
                              EMPLOYMENT AGREEMENT
                              --------------------

         THIS EMPLOYMENT AGREEMENT (the "Agreement") is made and entered into as
of this 6th day of May, 1998 by and among Prime Group Realty  Trust,  a Maryland
real estate  investment  trust  ("PGRT"),  Prime Group Realty,  L.P., a Delaware
limited partnership and the operating  partnership for PGRT ("Prime") (Prime and
PGRT are hereinafter  sometimes  collectively  referred to as  "Employer"),  and
Louis Conforti, an individual residing at 4432 N. Winchester Avenue, Apt. 2
North, Chicago, Illinois 60640 ("Executive").

                               W I T N E S S E T H
                               -------------------

         A.   Employer is engaged primarily in the ownership,  management,
leasing,  marketing,  acquisition,  development  and  construction of office and
industrial real estate facilities throughout the United States.

         B.   Employer believes that it would benefit from the application
of Executive's  particular and unique skill,  experience,  and background to the
management and operation of Employer.

         C.   Executive wishes to commit to serve Employer in the position
set forth herein on the terms herein provided.

         D.   he parties  wish by this  Agreement to set forth the terms
and conditions of the employment relationship between Employer and Executive.

         NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  mutual
covenants  herein set  forth,  and for other  good and  valuable  consideration,
Employer and Executive hereby agree as follows:

         1.   EMPLOYMENT  AND  DUTIES.  During the  Employment  Term (as
defined in Section 2 hereof), Employer agrees to employ Executive, and Executive
agrees to be employed by Employer,  as the Senior Vice President and Director of
Capital  Markets  of  Employer  on the terms  and  conditions  provided  in this
Agreement. Executive shall conduct, operate, manage and promote the business and
business  concept of Employer.  The Chief Executive  Officer or the President of
Employer may from time to time further define and clarify Executive's duties and
services  hereunder,  provided that such duties and services are consonant  with
Executive's position as Senior Vice President and Director of Capital Markets of
Employer.  Executive agrees to devote Executive's best efforts and substantially
all of  Executive's  business  time,  attention,  energy  and  skill to  perform
Executive's  duties as Senior Vice President and Director of Capital  Markets of
Employer,  subject to debt and equity  financing  origination  activities  to be
conducted by Executive on behalf of Prime Capital Holding,  LLC with the consent
of Employer.











                                      -1-
<PAGE>
         2.   TERM. The term of this Agreement shall commence on the first
day of  Executive's  employment  with  Employer  as  agreed to by  Employer  and
Executive  and  expire on the third  anniversary  of such date (the  "Employment
Term").

         3.   COMPENSATION  AND RELATED  MATTERS.  (a) Base  Salary.  As
compensation  for performing the services  required by this Agreement during the
Employment  Term,  Employer  shall pay to Executive an annual  salary of no less
than One  Hundred  Forty  Thousand  Dollars  ($140,000)  ("Base  Compensation"),
payable in accordance  with the general  policies and  procedures for payment of
salaries to its executive personnel  maintained,  from time to time, by Employer
(but no less  frequently  than monthly),  subject to withholding  for applicable
federal,  state, and local taxes. Increases in Base Compensation,  if any, shall
be determined by Employer , based on periodic reviews of Executive's performance
conducted on at least an annual basis..

              (b)  Bonus. In addition to Base Compensation,  Employer, in
Employer's sole and absolute discretion, may, but in no event shall be obligated
to,  authorize the payment of  additional  annual cash bonuses for each calendar
year of up to one  hundred  and fifty  percent  (150%) of Base  Compensation  (a
"Performance  Bonus  Distribution")  to Executive based upon achievement of such
corporate and individual  performance goals and objectives as may be established
or determined by Employer from time to time.  For the first year of  employment,
within  sixty  (60)  days  after  the  first  anniversary  of the  date  of this
Agreement,  Executive will be paid a Performance Bonus  Distribution of at least
eighty  percent  (80%)  of  Executive's  Base   Compensation  (the  "First  Year
Performance  Bonus  Distribution").  Subsequent to the first year of employment,
any Performance Bonus  Distributions  shall be paid within sixty (60) days after
the  conclusion of the applicable  calendar year,  provided that with respect to
any  Performance  Bonus  Distribution  for (i) the 1999 calendar year,  Employer
shall be entitled to a credit equal to  one-third of the First Year  Performance
Distribution  and (ii) the 2001 calendar,  if this Agreement  expires and is not
renewed by Employer and Executive, Executive shall be paid a pro-rata portion of
any bonus  otherwise  payable to Executive  for or with respect to such calendar
year within sixty (60) days after the expiration of this Agreement.

              (c)  Benefits. During the Employment Term and subject to the
limitations and alternative rights set forth in this Section 3(c), Executive and
Executive's  eligible  dependents  shall  have the right to  participate  in the
medical and dental  benefit  plan  established  by  Employer  (which may include
contributions  by  Executive,  but only to the  extent  such  contributions  are
required  by other  senior  executive  officers  of  Employer)  and in any other
retirement, pension, insurance, health or other benefit plan or program that has
been or is hereafter adopted by Employer (or in which Employer participates), as
such  plans  and  programs  may be  amended  or  modified  from  time to time by
Employer,  according to the terms of such plan or program with all the benefits,
rights and privileges as are enjoyed by any other senior  executive  officers of
Employer.  Employer  expects to have in place a life insurance  program in which
Executive  will be  entitled  to  participate  with  all  benefits,  rights  and
privileges as are enjoyed by any other senior executive officers of Employer. If
the  participation  of Executive would adversely  affect the  qualification of a
plan intended to be qualified under Section 401(a) of the Internal  Revenue Code
as the same may be amended from time to time (the "Code"),  Employer  shall have
the  right to  exclude  Executive  from  that  plan in  return  for  Executive's
participation  in (i) a  nonqualified  deferred  compensation  plan  or  (ii) an
arrangement providing Executive with substantially comparable benefits.


                                      -2-
<PAGE>
              (d)  Expenses. Executive shall be reimbursed, subject to
Employer's  receipt of invoices or similar  records as Employer  may  reasonably
request in  accordance  with its policies and  procedures,  as such policies and
procedures  generally  applicable to other senior executive officers of Employer
may be amended or modified from time to time by Employer, for all reasonable and
necessary  expenses  incurred by Executive  in the  performance  of  Executive's
duties  hereunder,  including  expenses  for  business  entertainment  and meals
(whether  in or  out of  town)  and  gas  for  business  travel,  but  excluding
automobile insurance.

              (e)  Vacations.  During the Employment Term,  Executive shall be
entitled  to  vacation  in  accordance  with  Employer's   practices   generally
applicable to other senior executive officers of Employer, as such practices may
be amended or modified from time to time by Employer,  provided  that  Executive
shall be  entitled  to at least  three  (3)  weeks  paid  vacation  in each full
calendar  year,  which in the case of the 1998  calendar  year shall be prorated
based on the number of days  Executive  is  employed  by  Employer  during  such
calendar  year.  Executive  may accrue  unused  vacation time if not used in any
calendar year or years,  however, the maximum cumulative amount of vacation time
that  Executive  may  accrue  and carry  over to the next year is two (2) weeks.
Executive shall be entitled to a payment for any vacation time which has accrued
but  has  not  been  used  as of the  date  of the  termination  of  Executive's
employment with Employer,  unless Executive's  employment is terminated pursuant
to Section 5(a)(ii) hereof.

         4.   SHARE  OPTIONS AND GRANTS.  PGRT has  established  a share
incentive plan (the "Share Incentive Plan").  The Share Incentive Plan initially
provides,  among other  things,  for the  issuance  from time to time to certain
officers,  directors  and  other  employees  of  PGRT  and  Employer,  including
Executive,  of share options.  Pursuant to the Share  Incentive Plan, (i) on the
date hereof,  PGRT shall grant to Executive 50,000 nonqualified stock options at
a purchase  price per share  equal to the Fair  Market  Value (as defined in the
Share  Incentive  Plan)  of such  share on the last  trading  date  prior to the
commencement  date of the Employment  Term (the  "Options").  Such Options shall
have the terms and  conditions as are set forth in the Share  Incentive Plan and
the Share Option Agreement to be entered into between PGRT and Executive. On the
date hereof,  PGRT shall also grant to Executive  without further  consideration
12,500 shares of beneficial  interests of PGRT, which shares shall be restricted
stock, will not be registered and will not be subject to any registration rights
obligating  PGRT  or  Prime  to  register  such  shares,  provided  that if this
Agreement and Executive's  employment is terminated pursuant to Section 5(a)(ii)
or 5(b)  hereof  within  six  (6)  months  after  the  commencement  date of the
Employment Term, Executive shall return all of such shares to Employer.















                                      -3-
<PAGE>
         5.   TERMINATION  AND TERMINATION  BENEFITS.  (a) Termination by
Employer.   (i)  Without  Cause.  Employer  may  terminate  this  Agreement  and
Executive's  employment  at any time for any reason or for no reason at all upon
written  notice  to  Executive  of such  termination.  In  connection  with  the
termination  of  Executive's   employment  pursuant  to  this  Section  5(a)(i),
Executive  shall (A) be paid  Executive's  Base  Compensation in accordance with
Section 3(a) hereof up to the effective date of such termination,  (B) be paid a
pro rata portion of any bonus otherwise payable to Executive for or with respect
to the calendar year in which such termination occurs in accordance with Section
3(b) hereof up to the effective date of such  termination and, to the extent not
previously paid, Executive shall be entitled to all bonuses payable to Executive
in accordance with Section 3(b) hereof for or with respect to any calendar years
prior to the calendar year in which such termination  occurs, (C) be entitled to
the  benefits  set  forth in  Sections  3(c),  3(d) and  3(e)  hereof  up to the
effective date of such termination.  For purposes of calculating Executive's pro
rata portion of any bonus  pursuant to clause (B) in the previous  sentence,  if
the  termination  takes place prior to receipt by Executive  of any  Performance
Bonus Distribution, the Performance Bonus Distribution, a pro rata (based on the
number of days in the year)  portion of which  Executive  shall be  entitled  to
receive,  shall be deemed to be 50% of  Executive's  then  current  annual  Base
Compensation.   For  purposes  of  this   Agreement,   the  "effective  date  of
termination"  shall  mean  the  last day on which  Executive  is  employed  with
Employer  which may be later  than the date of the  delivery  of any  applicable
notice of termination.

              (ii) WITH CAUSE.  Employer may terminate this Agreement with
cause  immediately  upon  written  notice to  Executive.  Employer  may elect to
require Executive to continue to perform Executive's duties under this Agreement
for  an  additional  thirty  (30)  days  following  notice  of  termination.  In
connection  with the  termination  of  Executive's  employment  pursuant to this
Section  5(a)(ii),  Executive shall (A) be paid Executive's Base Compensation in
accordance   with  Section  3(a)  hereof  up  to  the  effective  date  of  such
termination, and, to the extent not previously paid, Executive shall be entitled
to any bonuses  payable to Executive in accordance  with Section 3(b) hereof for
or with respect to any calendar  years prior to the calendar  year in which such
termination  occurs and (B) be  entitled to the  benefits  set forth in Sections
3(c),  3(d) and 3(e) hereof up to the effective  date of such  termination.  For
purposes of this Section 5(a)(ii), "cause" shall mean (1) a finding by the Chief
Executive  Officer of PGRT or the Board of Trustees of PGRT (the  "Board")  that
Executive has  materially  harmed  Employer,  its business,  assets or employees
through  (a)  an  act  of  dishonesty,  material  conflict  of  interest,  gross
misconduct or willful  malfeasance or (b) Executive's willful failure to perform
(which  shall not  include  inability  to perform due to  disability),  or gross
negligence in the performance of, in any material respects, Executive's material
duties under this  Agreement,  (2)  Executive's  conviction of (or pleading nolo
contendere   to)   a   felony,   involving   acts   of   dishonesty,   financial
untrustworthiness   or  adversely  impacting   Executive's  ability  to  perform
Executive's duties hereunder,  (3) the breach by Executive of any of Executive's
material obligations hereunder (other than those covered by clause (1)(b) above)
and the failure of Executive to cure such breach  within  thirty (30) days after
receipt by Executive of a written  notice of Employer  specifying  in reasonable
detail  the  nature of the  breach,  or (4)  Executive's  governmental  sanction
(including restrictions,  prohibitions and limitations agreed to under a consent
decree or agreed  order) under,  or conviction  for violation of, any federal or
state  securities  law,  rule or  regulation  (provided  that  in the  case of a
sanction,  such sanction  materially impedes or impairs the ability of Executive



                                      -4-
<PAGE>
to  perform  Executive's  duties  and  exercise   Executive's   responsibilities
hereunder in a  satisfactory  manner) or (5)  Executive's  willful breach of any
material policies or procedures of Employer.

              (iii) DISABILITY. If due to illness, physical or mental
disability,  or other  incapacity,  Executive  shall  fail  during  any four (4)
consecutive  months to perform the duties required by this  Agreement,  Employer
may, upon thirty (30) days' written notice to Executive,  either  terminate this
Agreement or suspend  Executive's  right to any Base Compensation or Performance
Bonus  Distributions,  effective upon expiration of such thirty (30) day period,
without  terminating this Agreement.  In any such event,  Executive shall (A) be
paid Executive's Base  Compensation in accordance with Section 3(a) hereof up to
the effective  date of such  termination,  (B) be paid a pro rata portion of any
bonus otherwise payable to Executive for or with respect to the calendar year in
which such  termination  occurs in accordance with Section 3(b) hereof up to the
first day of such four (4) month period and, to the extent not previously  paid,
Executive  shall be entitled to all bonuses  payable to Executive in  accordance
with Section 3(b) hereof for or with respect to any calendar  years prior to the
calendar  year in which  such  termination  occurs  and (C) be  entitled  to the
benefits set forth in Sections 3(c) (or the after-tax cash equivalent), 3(d) and
3(e)  hereof up to the  effective  date of such  termination.  For  purposes  of
calculating  Executive's pro rata portion of any bonus pursuant to clause (B) in
the  previous  sentence,  if the  termination  takes  place  prior to receipt by
Executive  of  any  Performance  Bonus   Distribution,   the  Performance  Bonus
Distribution,  a pro rata  portion  of which  Executive  shall  be  entitled  to
receive,  shall be deemed to be 50% of  Executive's  then  current  annual  Base
Compensation.  In the event Employer elects to suspend Executive's right to Base
Compensation and Performance Bonus  Distributions,  at such time as Executive is
able to resume the duties  required  under this  Agreement,  Executive  shall be
entitled to receive Base Compensation and Performance Bonus  Distributions  from
the date  Executive  commences  the  performance  of such duties  following  the
disability in accordance with the terms and provisions of this  Agreement.  This
Section  5(a)(iii)  shall not limit the  entitlement  of Executive,  Executive's
estate  or  beneficiaries  to any  disability  or other  benefits  available  to
Executive under any disability  insurance or other benefits plan or policy which
is  maintained  by  Employer  for  Executive's  benefit.  For  purposes  of this
Agreement,  the "date of disability" shall mean the first day of the consecutive
period  during  which  Executive  fails to perform  the duties  required by this
Agreement due to illness, physical or mental disability or other incapacity.

              (b)  Termination  by  Executive  Without  Good  Reason.  Executive
may  terminate  this  Agreement and  Executive's  employment at any time for any
reason  or for no  reason  at all upon  thirty  (30)  days'  written  notice  to
Employer,  during which period  Executive shall continue to perform  Executive's
duties  under this  Agreement  if Employer  so elects.  In  connection  with the
termination of Executive's  employment pursuant to this Section 5(b),  Executive
shall (A) be paid Executive's Base  Compensation in accordance with Section 3(a)
hereof up to the  effective  date of such  termination,  and,  to the extent not
previously paid, Executive shall be entitled to all bonuses payable to Executive
in accordance with Section 3(b) hereof for or with respect to any calendar years
prior to the calendar year in which such termination  occurs and (B) be entitled
to the  benefits  set forth in  Sections  3(c),  3(d) and 3(e)  hereof up to the
effective date of such termination.




                                      -5-
<PAGE>
              (c)  Death. Notwithstanding any other provision of this Agreement,
Executive's  employment  hereunder  shall  terminate on the date of  Executive's
death. In such event,  Executive shall (A) be paid Executive's Base Compensation
in accordance with Section 3(a) hereof up to the date of such death, (B) be paid
a pro rata  portion  of any bonus  otherwise  payable to  Executive  for or with
respect  to the  calendar  year in which such death  occurs in  accordance  with
Section  3(b) hereof up to the  effective  date of such death and, to the extent
not  previously  paid,  Executive  shall be entitled  to all bonuses  payable to
Executive  in  accordance  with  Section  3(b) hereof for or with respect to any
calendar  years prior to the calendar year in which such death occurs and (C) be
entitled to the  benefits  set forth in  Sections  3(c) (or the  after-tax  cash
equivalent),  3(d) and 3(e)  hereof up to the date of such death.  This  Section
5(c)  shall  not limit  the  entitlement  of  Executive,  Executive's  estate or
beneficiaries  under any  insurance  or other  benefits  plan or policy which is
maintained  by Employer for  Executive's  benefit.  For purposes of  calculating
Executive's pro rata portion of any bonus pursuant to clause (B) in the previous
sentence,  if the  termination  takes place prior to receipt by Executive of any
Performance Bonus Distribution,  the Performance Bonus Distribution,  a pro rata
portion of which Executive  shall be entitled to receive,  shall be deemed to be
50% of Executive's then current annual Base Compensation.

              (d)  Termination  Compensation.  In  the  event  of  a termination
of this Agreement and Executive's employment pursuant to Section 5(a)(i) hereof,
Employer  shall pay to  Executive,  within thirty (30) days of  termination,  an
amount  in one  lump  sum  ("Termination  Compensation")  equal  to (i) if  such
termination  occurs during the first year of this Agreement,  one hundred eighty
percent (180%) of Executive's  then current  annual Base  Compensation,  (ii) if
such  termination  occurs during the second year of this  Agreement,  fifty-five
percent (55%) of Executive's then current annual Base  Compensation and (iii) if
such termination occurs during the third year of this Agreement,  thirty percent
(30%) of Executive's then current annual Base  Compensation.  In the case of any
such termination,  the payment of such Termination Compensation shall be in lieu
of and  Executive  shall not be  entitled  to receive  any  payment  pursuant to
Section 5(a)(i)(B).

         6.   Covenants of Executive.

              (a)  No  Conflicts.  Executive  represents  and warrants that
Executive  is not  personally  subject to any  agreement,  order or decree which
restricts  Executive's  acceptance  of this  Agreement  and the  performance  of
Executive's duties with Employer hereunder.
















                                      -6-
<PAGE>
              (b)  Non-Competition.  In return for the performance of the
management  duties  described in Section 1 hereof,  during the Employment  Term,
Executive shall not, directly or indirectly, in any capacity whatsoever,  either
on  Executive's  own behalf or on behalf of any other person or entity with whom
Executive may be employed or  associated,  own any interest in,  participate  or
engage in the  day-to-day  supervision,  management,  development,  marketing or
operation  of any office or  industrial  real  estate  facilities  or such other
business  as  Employer  may be  engaged  in  during  the  Employment  Term  (the
"Business") which is competitive with any of Employer's facilities. For purposes
hereof, a facility will be deemed competitive with one of Employer's  facilities
if such facility is located within ten (10) miles of a facility owned,  operated
or managed by Employer or within ten (10) miles of a facility  which Employer is
developing  or with  respect to which  Employer has signed a letter of intent or
term sheet or binding  contract for the  acquisition,  development or management
thereof dated on or prior to the date of such  termination.  Furthermore,  for a
period of one year after any applicable Section 5 termination  event,  Executive
shall not, directly or indirectly, solicit, attempt to hire or hire any employee
or client of  Employer.  Notwithstanding  the  foregoing,  nothing  herein shall
prohibit  Executive  from owning 5% or less of any  securities  of a  competitor
engaged in the same  Business  if such  securities  are  listed on a  nationally
recognized  securities  exchange  or  traded  over-the-counter  on the  National
Association of Securities Dealers Automated Quotation System or otherwise.

              (c)  Non-Disclosure.  During the Employment Term and for a period
of two years after the  expiration  or  termination  of this  Agreement  for any
reason,  Executive  shall not  disclose  or use,  except in the  pursuit  of the
Business for or on behalf of Employer, any Trade Secret (as hereinafter defined)
of  Employer.  For  purposes of this  Section  6(c),  "Trade  Secret"  means any
proprietary  commercial  information which derives  independent  economic value,
actual or  potential,  with  respect  to  Employer  which  Employer  uses in its
Business from not being generally known to, and not being readily  ascertainable
by proper  means by,  other  persons  who can  obtain  economic  value  from its
disclosure or use and is the subject of efforts to maintain its secrecy that are
reasonable  under the  circumstances.  Said  term,  however,  shall not  include
general  "know-how"  information  acquired by  Executive  prior to or during the
course of Executive's  service which could have been obtained by him from public
sources  without the expenditure of significant  time,  effort and expense which
does not relate to Employer.

              (d)  Business Opportunities. During the Employment Term, Executive
agrees to bring to Employer  any and all  business  opportunities  which come to
Executive's attention for the acquisition,  development,  management, leasing or
marketing  of real  estate  for  industrial  or office  use.  In the event  that
Employer  elects  not to  participate  or take  advantage  of any such  business
opportunity,  Executive  shall  be free to  pursue  such  business  opportunity,
provided  that such business  opportunity  does not cause any tenant to relocate
from a  facility  owned  and/or  operated  by  Employer,  PGRT  or any of  their
respective   subsidiaries  and  participation  by  Executive  in  such  business
opportunity would not violate Executive's  non-competition obligations set forth
in Section 6(b) hereof.









                                      -7-
<PAGE>
              (e)  Return of Documents. Upon termination of Executive's services
with  Employer,  Executive  shall  return  all  originals  and  copies of books,
records,  documents,  customer lists, sales materials, tapes, keys, credit cards
and other tangible property of Employer within  Executive's  possession or under
Executive's control.

              (f)  Equitable  Relief. In the event of any breach by Executive of
any of the covenants contained in this Section 6, it is specifically  understood
and agreed that  Employer  shall be  entitled,  in addition to any other  remedy
which it may have, to equitable  relief by way of  injunction,  an accounting or
otherwise and to notify any employer or prospective  employer of Executive as to
the terms and conditions hereof.

              (g)  Acknowledgment. Executive acknowledges that Executive will be
directly and materially  involved as a senior  executive in all important policy
and operational  decisions of Employer.  Executive further acknowledges that the
scope of the foregoing  restrictions  has been  specifically  bargained  between
Employer  and  Executive,  each being  fully  informed  of all  relevant  facts.
Accordingly, Executive acknowledges that the foregoing restrictions of Section 6
are fair and  reasonable,  are minimally  necessary to protect  Employer and its
other  partners  from the unfair  competition  of Executive  who, as a result of
Executive's  performance  of  services  on  behalf  of  Employer,  will have had
unlimited access to the most confidential and important information of Employer,
its  business  and future  plans.  Executive  furthermore  acknowledges  that no
unreasonable  harm or injury  will be suffered  by him from  enforcement  of the
covenants  contained herein and that Executive will be able to earn a reasonable
livelihood  following   termination  of  Executive's  services   notwithstanding
enforcement of the covenants contained herein.

         7.   PRIOR  AGREEMENTS.  This Agreement,  together with the Stock
Incentive  Plan,  supersedes  and is in lieu of any  and  all  other  employment
arrangements between Executive and Employer or its predecessor or any subsidiary
and any and all such other  employment  agreements and  arrangements  are hereby
terminated and deemed of no further force or effect.

         8.   ASSIGNMENT.  Neither this Agreement nor any rights or duties of
Executive  hereunder  shall be assignable  by Executive  and any such  purported
assignment  by him shall be void.  Employer  may assign all or any of its rights
hereunder  provided  that  substantially  all of the assets of Employer are also
transferred to the same party.

         9.   SUCCESSOR TO EMPLOYER.  Employer will require any successor or
assign  (whether  direct or indirect,  by  purchase,  merger,  consolidation  or
otherwise) to all or  substantially  all the business and/or assets of Employer,
as the case may be, by agreement in form and substance  reasonably  satisfactory
to Executive,  expressly,  absolutely and unconditionally to assume and agree to
perform this  Agreement in the same manner and to the same extent that  Employer
would be required to perform it if no such  succession or  assignment  had taken
place.   Any  failure  of  Employer  to  obtain  such  agreement  prior  to  the
effectiveness of any such succession or assignment shall be a material breach of
this  Agreement  giving  Executive the right to terminate this  Agreement.  This
Agreement  shall  inure to the  benefit  of and be  enforceable  by  Executive's
personal  and  legal  representatives,  executors,  administrators,  successors,
heirs,  distributees,  devisees and legatees.  If Executive should die while any
amounts are still  payable to  Executive  hereunder,  all such  amounts,  unless
otherwise  provided  herein,  shall be paid in accordance with the terms of this
Agreement to Executive's  devisee,  legatee or other designee or, if there be no
such designee, to Executive's estate.
                                       -8-
<PAGE>
         10.  NOTICES.  Any notice required or permitted to be given under
this  Agreement  shall be sufficient if in writing and if personally  delivered,
sent by courier or by certified mail,  postage or delivery charges  prepaid,  to
the following addresses:

         (a)      if to Executive, to:

                  Louis Conforti
                  4432 North Winchester Avenue
                  Apt. 2 North
                  Chicago, IL 60640

                  WITH A COPY TO:

                  Baer Marks & Upham LLP
                  805 Third Avenue
                  New York, New York 10022
                  Attn: Donald S. Snider

         (b)      if to Employer, to:

                  Prime Group Realty Trust
                  Suite 3900
                  77 West Wacker Drive
                  Chicago, IL 60601
                  Attn: Chief Executive Officer

                  WITH A COPY TO:

                  Prime Group Realty Trust
                  Suite 3900
                  77 West Wacker Drive
                  Chicago, IL 60601
                  Attn: General Counsel

                  and to:

                  Winston & Strawn
                  35 West Wacker Drive
                  Chicago, IL  60601
                  Attn:  Wayne D. Boberg

Any notice,  claim, demand,  request or other communication given as provided in
this Section 10, if delivered personally,  shall be effective upon delivery; and
if given by courier,  shall be effective one (1) business day after deposit with
the courier if next day delivery is guaranteed;  and if given by certified mail,
shall be effective  three (3) business  days after  deposit in the mail.  Either
party may change the address at which it is to be given notice by giving written
notice to the other party as provided in this Section 10.









                                      -9-
<PAGE>
         11.  AMENDMENT.  This Agreement may not be changed,  modified or
amended except in writing signed by both parties hereto.

         12.  WAIVER OF BREACH.  The waiver by either party of the breach
of any provision of this Agreement shall not operate or be construed as a waiver
of any subsequent breach by either party.

         13.  SEVERABILITY.  Employer and Executive each expressly  agree
and contract  that it is not the intention of either party to violate any public
policy, statutory or common law, and that if any covenant, sentence,  paragraph,
clause or combination of the same of this Agreement (a "Contractual  Provision")
is in  violation  of the law of any state  where  applicable,  such  Contractual
Provision  shall  be void in the  jurisdictions  where it is  unlawful,  and the
remainder  of such  Contractual  Provision,  if any,  and the  remainder of this
Agreement  shall  remain  binding  on the  parties  such that  such  Contractual
Provision shall be binding only to the extent that such Contractual Provision is
lawful or may be lawfully  performed  under then  applicable  laws. In the event
that any part of any Contractual  Provision of this Agreement is determined by a
court  of  competent   jurisdiction  to  be  overly  broad  thereby  making  the
Contractual Provision  unenforceable,  the parties hereto agree, and it is their
desire, that such court shall substitute a judicially  enforceable limitation in
its place, and that the Contractual Provision, as so modified,  shall be binding
upon the parties as if originally set forth herein.

         14.  INDEMNIFICATION  BY EXECUTIVE.  Executive  shall  indemnify
Employer for any and all damages, costs and expenses resulting from any material
harm  to  Employer,  its  business,  assets  or  employees  through  an  act  of
dishonesty,   material  conflict  of  interest,   gross  misconduct  or  willful
malfeasance by Executive.  Executive also shall  indemnify  Employer for any and
all damages,  costs and expenses  resulting  from  Executive's  acts of omission
constituting  willful or reckless  disregard of  Executive's  duties to Employer
following  notice thereof by Employer after it becomes aware of such conduct and
Executive's failure to so cure within thirty (30) days.

         15.  GOVERNING  LAW. This  Agreement  shall be governed by, and
construed,  interpreted and enforced in accordance with the laws of the State of
Illinois, exclusive of the conflict of laws provisions of the State of Illinois.

                            [signature page follows]



















                                      -10-
<PAGE>
         IN WITNESS WHEREOF,  the parties hereto have executed this Agreement as
of the date first written above.

                                    EMPLOYER:

                                    PRIME GROUP REALTY TRUST

                                    By:   \s\ Richard S. Curto
                                          -------------------------------------

                                    Title:Chief Executive Officer and President
                                          -------------------------------------

                                    PRIME GROUP REALTY, L.P.

                                    By:      Prime Group Realty Trust,
                                             its General Partner

                                             By:   \s\ Richard S. Curto
                                                   ----------------------------

                                             Title:Chief Executive Officer and
                                                   President
                                                   ----------------------------

                                   EXECUTIVE:

                                 \s\ Louis Conforti
                                 ----------------------------------------------
                                 Louis Conforti

DOCUMENT NUMBER:  317632.5
May 30, 1998





















                                      -11-

<PAGE>
                                 PROMISSORY NOTE

$75,000,000.00                                             Dated:   May 14, 1998

              FOR  VALUE RECEIVED,  AMERICAN  NATIONAL  BANK AND  TRUST  COMPANY
OF CHICAGO, a national banking association, not personally but solely as trustee
under  trust  agreement  dated  July 26,  1977 and known as Trust No.  40935 and
AMERICAN  NATIONAL  BANK AND  TRUST  COMPANY  OF  CHICAGO,  a  national  banking
association,  as successor  trustee to First Bank, N.A., as successor trustee to
National Boulevard Bank of Chicago, not personally,  but solely as trustee under
trust   agreement  dated  September  27,  1976  and  known  as  Trust  No.  5602
(collectively,  "BORROWER"),  promise to pay to the order of CONNECTICUT GENERAL
LIFE  INSURANCE  COMPANY,  a Connecticut  corporation,  having an address at c/o
CIGNA  Investments,   Inc.,  900  Cottage  Grove  Road,  Hartford,   Connecticut
06152-2319,  Attention: Investment Services, S-319 ("HOLDER"), or any subsequent
holder of this  Note,  the  principal  sum of  Seventy-Five  Million  and 00/100
Dollars  ($75,000,000.00),  with  interest on the unpaid  balance of such amount
from the date hereof at the rates of interest specified herein.

              1.   CERTAIN  DEFINED  TERMS.  In  addition  to  the terms defined
elsewhere  in this Note,  as used  herein,  the  following  terms shall have the
following meanings:

              "ADJUSTED  NET  OPERATING  INCOME"  shall  mean for any period the
         Net  Operating  Income for such period less Basic  Payments made during
         such period.

              "AFFILIATED  ENTITIES"  and  "AFFILIATED  ENTITY"  shall  mean,
         collectively,  Beneficiary,  or any of the partners or  shareholders of
         any  partnership  or corporation  which directly or indirectly  through
         corporations or partnerships controlled by them is a limited or general
         partner of the Beneficiary,  or any entity of which any of such parties
         or  shareholders  alone or in any combination is a general partner or a
         controlling  director,  managing officer or majority shareholder or has
         or have more than a ten  percent  (10%)  beneficial  interest  therein;
         provided  that  (a) any one of the  foregoing  Affiliated  Entities  is
         individually called an "Affiliated Entity"; and (b) the term Affiliated
         Entity shall specifically  include Casati,  Heise, and their respective
         spouses, blood and adoptive relatives, ancestors and descendants.

              "ASSIGNMENT"  shall  mean  the  Assignment  of Rents and Leases of
         even date herewith,  made by Borrower in favor of Holder  pertaining to
         the Property.

              "BASIC PAYMENT"  shall  mean  the  sum of the Minimum Payment plus
         the Tax Reserve Payment.

              "BENEFICIARY" shall  mean  Continental  Towers Associates-I, L.P.,
         an  Illinois limited partnership,  which is the owner of the beneficial
         interest of Borrower,  or such successor as shall have been approved by
         Holder.

              "BUSINESS  DAY" shall  mean  any  day  on which  commercial  banks
         are not authorized or required to close in Chicago, Illinois.

              "CAPITAL LOANS" shall have the meaning set forth in the
         Intercreditor Agreement.

                                      -1-
<PAGE>
              "CASATI" shall mean ROLAND E. CASATI.

              "C/H PARTNERSHIP" shall mean Casati-Heise Partnership, an Illinois
         general partnership.

              "CLOSED PERIOD" shall mean the period beginning on the date hereof
         and ending on April 30, 2000.

              "COMMERCIUM"  shall  mean  that  portion of the Property used as a
         restaurant, health club, spa and related facilities.

              "COLLATERAL" shall mean all real and personal property  encumbered
         by the Loan Documents including proceeds thereof.

              "DEFAULT RATE"  shall  mean an annual rate of 11.22% calculated on
         the basis of a 360-day year.

              "DEFAULT RATE INTEREST"  shall  mean  Interest  calculated  at the
         Default Rate.

              "DEFERRED  AMOUNT"  shall  mean  the  amount by which  $540,656.41
         exceeds the Required  Monthly  Payment.  Deferred  Payments  shall bear
         interest  at the  Default  Rate  from  the due  date of the  applicable
         Required  Monthly  Payment  until the  Deferred  Amount  is fully  paid
         ("DEFERRED AMOUNT INTEREST").

              "EVENT OF DEFAULT"  shall  mean  (i) a Payment  Default under this
         Note, (ii) an Event of Default under and as defined in any of the other
         Loan Documents or the Subordinated Loan Documents, or (iii) the failure
         by Borrower to accept the Reset Amendment within ten (10) Business Days
         following the tendering thereof to Borrower by Lender.

              "GROSS  REVENUES"  for  any  period  shall  mean  the  sum  of the
         gross  rental  receipts and all other  receipts and revenues  generated
         during such period by and from the use and operation of the Property or
         any part  thereof,  including  base rental  income,  percentage  rental
         income,  items of expense  (including real estate taxes) passed through
         and charged to, and/or collected from, tenants,  membership fees, dues,
         net  concession  income  and other net  revenues  from the  Commercium,
         vending machine income, any non-refundable  security deposits,  charges
         for space occupancy,  parking revenues,  lease termination payments and
         the proceeds of any insurance  proceeds  specifically paid to reimburse
         Borrower  for loss of  business  or rental  income  and not  applied by
         Holder in reduction of the unpaid principal balance of the Loan; and in
         connection with the calculation and determination of Gross Revenues:

                   (a)  Gross Revenues shall be determined in accordance with
              the cash basis method of accounting;

                   (b)  Any lease termination  payments shall,  at the option of
              Holder,  be included in Gross Revenues for purposes of calculating
              Net  Operating  Income,  and  available  for  distribution, in the
              calendar months to which they relate (i.e. the termination payment
              shall be applied in equal amounts to each month  remaining  in the
              term of the lease had there been no termination)  and any  advance
              rental  payments  shall, at  the  option of Holder, be held in the
              Lock Box Account to be included in Gross  Revenues for purposes of

                                      -2-
<PAGE>
              calculating  Net Operating  Income and distributed in the calendar
              month or months to which they relate,  and such lease  termination
              payments and advance rental payments shall be held in the Lock Box
              Account pending such inclusion; and

                   (c)  There  shall  be  excluded  from  the  determination  of
              Gross Revenues  (i) proceeds of casualty insurance or condemnation
              and  eminent  domain  proceedings  and (ii) proceeds  of any other
              indebtedness   encumbering   the  Property  or  encumbering  other
              Collateral including Capital Loans.

              "HEISE" shall mean RICHARD A. HEISE.

              "INTERCREDITOR  AGREEMENT"  shall  mean that certain Subordination
         and  Intercreditor  Agreement  of even date herewith between Holder and
         Junior Holder.

              "INTEREST" shall mean interest accruing hereunder at the  Interest
         Rate or the Default Rate, as applicable.

              "INTEREST  RATE"  shall mean an annual rate of  interest  of 7.22%
         calculated  on the basis of a 360-day year.

              "JUNIOR HOLDER"  shall  mean  the  holder of the Subordinated Loan
         Documents.

              "LOAN" shall mean the loan evidenced by this Note.

              "LOAN  DOCUMENTS"   shall  mean  this  Note,   the  Mortgage,  the
         Assignment,  and  all  other  documents,   agreements  and  instruments
         evidencing,  securing or in any way relating to the Loan, together with
         all amendments thereto which may hereafter exist.

              "LOCK BOX ACCOUNT"  shall have the  meaning  set forth in the Lock
         Box Agreement.

              "LOCK BOX AGREEMENT"  shall  mean  that  certain 1998 Lock Box and
         Blocked Accounts Agreement of even date herewith among LaSalle National
         Bank, Borrower, Beneficiary, Holder and Julian, Toft & Downey, Inc.

              "MANAGEMENT AGREEMENT" shall mean the Management Agreement   dated
         December 12, 1997  among  Beneficiary  and Manager,  together with  the
         Agreement  Pertaining to Management Agreement of even date herewith
         among Manager, Beneficiary, and Holder.

              "MANAGER" shall mean Prime Realty  Services, Inc. or other Manager
         approved  by  or designated by Senior Lender pursuant to the Management
         Agreement.

              "MATURITY DATE" shall mean January 5, 2013.

              "MINIMUM  PAYMENT"  in respect of a calendar  month shall mean the
         sum of Four Hundred Sixty-Six Thousand Six Hundred Sixty-Seven  Dollars
         ($466,667).

              "MORTGAGE"  shall  mean  the First Mortgage of even date herewith,
         made by  Borrower  in  favor  of  Holder  pertaining  to the  Property.

                                      -3-
<PAGE>
              "NET OPERATING INCOME"  shall  mean  for  any period the amount,if
         any, by which Gross Revenues for such period exceed Operating Costs for
         such period.

              "NOTE"  shall  mean  this  Promissory  Note,   together  with  all
         amendments hereto from time to time.

              "OPERATING  COSTS"  for  any  period  shall  mean  the  normal and
         customary operating costs of the Property paid during such period by or
         for the account of Borrower,  all as determined in accordance  with the
         cash basis method of accounting; provided that:

                   (a)  If the charges are  not  usual  and  customary  then, to
              constitute   an  allowable  Operating  Cost,  such  items  must be
              approved by Holder as being permitted Operating Costs for purposes
              of  calculating  Net  Operating Income;

                   (b)  Operating Costs shall include, among other things,  bona
              fide  management  fees under the Management Agreement and deposits
              into the Tax Reserve Account;

                   (c)  If  the  period  for  which  Operating  Costs  is  being
              determined  is  other  than  a  full  year,  annual costs, such as
              insurance  premiums  and  like costs shall be allocated ratably to
              such period;

                   (d)  Operating Costs shall not include:

                        (i)  Any principal, interest or other amounts paid under
                   any notes secured by  liens encumbering the Property or other
                   Collateral,  or  any  other  loan, including  the  Loan,  the
                   Subordinated Loan and any Capital Loans;

                        (ii) Leasing  commissions,  cost  of tenant improvements
                   and other  nonrecurring  capital items;

                        (iii)Income taxes;

                        (iv) Non-cash items, such as depreciation or
                   amortization;

                        (v)  Real  estate   taxes  upon  the Property  except to
                   the extent paid with funds of the  Borrower in the event that
                   funds  accumulated  in  the  Tax  Reserve  Account  shall  be
                   insufficient to pay the same; or

                        (vi) Costs  paid  directly  by  tenants,  except  to the
                   extent the amount  thereof is  included in Gross Revenues;

                   (e)  For the purposes of  computing Operating Costs, no fees,
              commissions,  charges,  expenses  or  other  amounts  paid  to any
              Affiliated  Entity shall  constitute an Operating Cost unless such
              fees,  commissions  or  other  amounts  are  bona  fide  costs and
              are  approved  by  Holder  as  a  permitted  Operating  Cost;  and
              specifically,  but  without limitation, the term  Operating  Costs
              shall not  include  without the express written approval of Holder
              (i) salaries or other  compensation directly or indirectly paid to

                                      -4-
<PAGE>
              Affiliated  Entities other than as expressly provided herein, (ii)
              any  allocation  of  expenses of employees,  agents or independent
              contractors that render services or  with  respect  to  properties
              other than  the Property,  nor (iii) any expense that is paid from
              proceeds  of  the Loan or out of reserves established out of Gross
              Revenues  or  otherwise,  the  amount  of  which  were deducted as
              Operating Costs;

              "OUTSTANDING BALANCE" shall mean, as of the date of   calculation,
         the outstanding principal balance  of this  Note,  all accrued interest
         thereon,  whether  or  not  capitalized,  and  all  other  amounts  due
         hereunder.

              "OUTSTANDING  PRINCIPAL"  shall  mean  the  outstanding  principal
         amount hereof.

              "PARTIES" shall mean Borrower, Beneficiary and Holder.

              "PAYMENT DEFAULT" shall meaning set forth in Section 10 of this
         Note.

              "PREPAYMENT PREMIUM" shall have the meaning set forth in Section 6
         of this Note.

              "PROPERTY"  shall have the meaning assigned in the Mortgage to the
         term "Mortgaged Property."

              "REMAINING ADJUSTED NET OPERATING INCOME" shall mean Adjusted  Net
         Operating  Income  for  a  calendar  month  minus the Required  Monthly
         Payment due in the next succeeding calendar month.

              "REQUIRED  DEFERRED  PAYMENT"  shall  mean  the lesser of  (i) the
         aggregate  of all  unpaid  Deferred  Amounts  plus  accrued  and unpaid
         Deferred  Amount  Interest or (ii)  Remaining  Adjusted  Net  Operating
         Income.

              "REQUIRED MONTHLY PAYMENT"  shall mean the sum of (i) the  Minimum
         Payment plus (ii) the lesser of (a) Seventy-Three Thousand Nine Hundred
         Eighty-Nine  and  41/100  Dollars  ($73,989.41),  or  (b)  the Adjusted
         Net Operating Income for the preceding month.

              "RESET  AMENDMENT"  shall  have  the  meaning  set  forth  in  the
         Intercreditor Agreement.

              "RESET DATE" shall mean April 30, 2005.

              "SUBORDINATED LOAN" shall mean the loan evidenced by the
         Subordinated Loan Documents.

              "SUBORDINATED  LOAN  DOCUMENTS"  shall  mean  the  loan  documents
         listed in SCHEDULE A attached hereto.

              "TAX  RESERVE  ACCOUNT"  shall  mean  the  Real  Estate Tax Escrow
         Account created and maintained pursuant to the Lock Box Agreement.




                                      -5-
<PAGE>
              "TAX  RESERVE  PAYMENT"  for  any  calendar  month  shall mean the
         payment  made to the Tax  Reserve  Account  pursuant  to the  Lock  Box
         Agreement in such month.

              2.   TERMS OF PAYMENT.

                   (a)  Borrower shall pay to Holder on May 20, 1998, interest
              only on the Outstanding Principal, at the  Interest Rate,  for the
              number of days elapsed from and including the date of  advancement
              of the Loan to and including May 19, 1998; and

                   (b)  Commencing June 20, 1998 and on the twentieth (20th) day
              of each  calendar  month  thereafter  until  the Maturity Date (as
              defined herein),  Maker shall pay to Holder (i) an installment  of
              principal  and  interest accrued on the Outstanding Principal from
              time to time equal to the Required Monthly Payment,  plus (ii) the
              Required Deferred Payment; and

                   (c)  On the Maturity Date,  Borrower shall pay to Holder the
              entire Outstanding Principal, together  with  accrued  and  unpaid
              interest thereon at the Interest Rate chargeable hereunder and any
              other charges due under this Note, the Mortgage and the other Loan
              Documents,  and any  other  amounts  due under or   secured by the
              Mortgage  or  due  under or  secured  by  any  of  the  other Loan
              Documents.

              Notwithstanding  the  foregoing,  in  the  event that the due date
of any payment  required in this Note is not a Business  Day, such payment shall
be due on the next  succeeding  Business  Day,  following  such due  date.  Each
payment  shall  be  applied  first  to  accrued   interest  then  to  principal.
Notwithstanding the foregoing, any monthly payment or any other payment received
by Holder at a time when an Event of Default  exists  shall be applied by Holder
to the  indebtedness  evidenced  hereby in such  order and  manner as Holder may
elect. Net Operating Income and all components thereof shall be subject to audit
and review by Holder and its auditors,  at Borrower's  expense,  and in any such
audit and review,  Holder's  auditors may adjust and reallocate  items of income
and expense,  and the timing  thereof,  as they may deem necessary to accurately
present Net Operating  Income and the components  thereof on a basis  consistent
from year to year or period to period.

              3.   MATURITY.  The  entire  Outstanding  Balance hereof and other
obligations  payable  pursuant to the M ortgage or other Loan Documents shall be
due and payable to Holder on the Maturity Date.

              4.   SURVIVAL  OF  PAYMENT  OF  OBLIGATIONS.  The  obligations  of
Borrower hereunder shall be secured by the Mortgage and the other Loan Documents
and Collateral and Holder shall be under no obligation to  satisfy or  otherwise
release the Mortgage and the other recorded Loan Documents  until the payment in
full of all  amounts  payable  to Holder  under  this  Note and all  other  Loan
Documents.

              5.   PAYMENTS.  All  payments  on account of the Loan or this Note
shall be made not later than noon  (Chicago  time) on the day when due in lawful
money of the United States in same day or other immediately  available funds and
are payable at  Holder's  office as set forth  above,  or at such other place as
Holder shall notify the Borrower in writing.


                                      -6-
<PAGE>
              6.   PREPAYMENT.  No  portion of the  principal of the Loan may be
prepaid  prior  to the end of the  Closed  Period.  Thereafter,  the Loan may be
prepaid in full but not in part upon no less than thirty (30) days prior written
notice to Holder and  payment to Holder in  immediately  available  funds of all
amounts due hereunder and under the Loan Documents  plus the Prepayment  Premium
calculated  in  accordance  with  SCHEDULE B attached  hereto  (the  "PREPAYMENT
PREMIUM").  Except  as may  be  otherwise  provided  by the  terms  of the  Loan
Documents,  Prepayment Premium shall be payable upon any unscheduled  payment of
principal  which occurs  prior to thirty (30) days prior to the  Maturity  Date,
whether  before or after an Event of  Default,  whether or not the  indebtedness
evidenced hereby shall have been accelerated,  whether such unscheduled  payment
of the  principal  is made  before  or after  the  commencement  of  foreclosure
proceedings or for any other reason,  which Prepayment  Premium shall be paid in
addition  to the  principal  and  interest  then due and  payable  and all other
amounts owing to Holder under the Loan Documents and secured by the Mortgage. In
the event of an  acceleration  of the  indebtedness  under this Note  during the
Closed Period,  the Prepayment  Premium then due shall be the amount  calculated
pursuant  to  SCHEDULE B plus two  percent  (2%) of the  Outstanding  Principal.
Notwithstanding  the foregoing  provisions of this Section 6,  prepayment of the
Loan shall be  permitted  without  Prepayment  Penalty  to the extent  insurance
proceeds  or eminent  domain  awards and  compensation  are to be or may (at the
option of Senior Lender) be applied to the Loan pursuant to the Mortgage.

              7.   RESET.  Pursuant  to the Intercreditor Agreement, the payment
and other terms of this Note will be reset  effective on the Reset Date upon the
execution  and  delivery  to  Borrower  by Junior  Holder  and Holder of a Reset
Amendment  setting  forth the terms of this Note for the period on and following
the Reset Date. Borrower irrevocably agrees to countersign and accept such Reset
Amendment  provided that in no event shall the Minimum  Payment be increased nor
shall the Interest Rate exceed the greater of (i) twenty-five  percent (25%) per
annum,  or (ii) that  annual  rate  which  when  multiplied  by the  Outstanding
Principal  would  yield a  smaller  product  than an annual  rate of twelve  and
one-half  percent  (12-1/2%)  multiplied by the outstanding  balance  (including
principal,  capitalized  interest  and  accrued  and  unpaid  interest)  of  the
Subordinated Loan.

              8.   APPLICATION OF PAYMENTS.

                   (a)  All  payments received by Holder under the Loan shall be
              applied  first to  interest  and the balance to principal; and

                   (b)  Notwithstanding  anything  to  the  contrary  herein
              contained, in the event that there shall have occurred an Event of
              Default under the Mortgage,  Holder,  in its discretion, may apply
              any payment  under this Note to such  amounts  due  hereunder  and
              under  the  Loan  Documents  and  in  such  order  as  Holder  may
              determine.

              9.   LATE  PAYMENT.  In  the  event  Borrower fails  to  make  any
payment due under this Note,  within  five (5) days after the same shall  become
due, whether by acceleration of payment or otherwise, Holder, in addition to its
rights set forth in Section 10 hereof, may at its option impose a late charge on
Borrower, payable upon demand, equal to the greater of:





                                      -7-
<PAGE>
                   (a)  The amount resulting  from  applying the rate of Default
              Rate Interest, computed  from the date  such  payment  was due and
              payable to the date of receipt of such payment by Holder in   good
              and immediately available funds, or

                   (b)  An  amount equal  to  four percent (4%) of the amount of
              such past due  payment  notwithstanding  the  date on  which  such
              payment is actually paid to Holder.

              10.  ACCELERATION OF INDEBTEDNESS. If the Required Monthly Payment
is not made when due in any month,  the Holder  may give  written  notice to the
Borrower stating the deficiency for such month and stating that Borrower will be
in default if the  delinquent  amount is not paid within ten (10) Business Days.
If Borrower  does not pay the  delinquent  amount  before the  expiration of the
stated  period,  it shall be  deemed in  default  under  this  Note (a  "PAYMENT
DEFAULT").  Upon the  occurrence  of an Event of  Default,  then and in any such
event,  the  Outstanding  Principal  and all  interest  accrued  thereon and all
charges  and fees  which are part of the Loan and any  other  sums  advanced  by
Holder  under this Note and the other  Loan  Documents  shall,  at the option of
Holder, and without notice, demand or presentment for payment to Borrower or any
other  person or entity,  at once become due and  payable  and may be  collected
forthwith,  regardless of the stipulated date of maturity, anything herein or in
the other Loan Documents to the contrary notwithstanding, all without any relief
whatever  from any  valuation or  appraisement  laws and payment  thereof may be
enforced  and  recovered  in  whole or in part at any time by one or more of the
remedies provided to Holder in this Note, the Mortgage, in any of the other Loan
Documents,  or by such other rights and  remedies  which Holder may have at law,
equity or  otherwise.  Default Rate  Interest  shall  accrue on the  Outstanding
Principal from the date of any default  hereunder (so long as such default shall
continue), regardless of whether or not there shall have been an acceleration of
the payment of principal as set forth herein.

              11.  SECURITY.  Payment hereof and all obligations of Borrower and
other  parties  (other  than  Holder) to the Loan  Documents  are secured by the
Mortgage and the other Loan Documents.

              12.  EXPENSES AND COSTS OF COLLECTION.   Borrower  shall  pay  all
costs and expenses of collection  incurred by Holder,  in addition to principal,
interest and late or delinquency charges (including,  without limitation,  court
costs and reasonable attorneys' fees and disbursements through and including any
appellate  proceedings and any special  proceedings) and including all costs and
expenses  incurred in connection with the pursuit by Holder of any of its rights
or remedies referred to herein or the protection of or realization of collateral
or in connection with any of Holder's collection efforts, whether or not suit on
this Note, on any of the other Loan Documents or any  foreclosure  proceeding is
filed, and all such costs and expenses shall be payable on demand and also shall
be secured by the Mortgage and all other  collateral  at any time held by Holder
as security for Borrower's obligations to Holder.

              13.  NO WAIVER OR ORAL MODIFICATION. It is agreed that:

                   (a)  No  failure on  the part of Holder to exercise any right
              or  remedy  hereunder,  whether before or after the happening of a
              default, shall  constitute  a  waiver of such default,  any future
              default or of any other default;



                                      -8-
<PAGE>
                   (b)  No failure to accelerate  the debt  evidenced  hereby by
              reason  of  default  hereunder,   or  acceptance  of  a  past  due
              installment,  or  indulgence  granted  from  time to time shall be
              construed  to  be  a  waiver  of  the  right to insist upon prompt
              payment or to impose late or delinquency  charges thereafter or to
              impose  such  charges  retroactively, nor shall it be deemed to be
              a novation by Holder of this Note or as a  reinstatement by Holder
              of  the  debt  evidenced  hereby  or  as a waiver of such right of
              acceleration  or  any  other  right,  nor  be  construed  so as to
              preclude the exercise of any right which Holder may have,  whether
              by the laws of the state  governing  this  Note,  by  agreement or
              otherwise,  and Borrower and each endorser hereby expressly waives
              the benefit of any  statute or rule of law or equity  which  would
              produce a result contrary to or in conflict with the foregoing;
              and

                   (c)  This  Note  may  not  be changed orally,  but only by an
              agreement  in  writing  signed  by  the  party  against  whom such
              agreement is sought to be enforced.

              14.  WAIVER OF CERTAIN  NOTICES. To the fullest  extent  permitted
under applicable law, Borrower,  for itself and its successors and assigns,  and
each  endorser,  if any, of this Note,  for its heirs,  successors  and assigns,
hereby waives presentment, protest, notice of protest, demand, diligence, notice
of  dishonor  and of  nonpayment,  and  waives and  renounces  all rights to the
benefits  of any  statute  of  limitations  and  any  moratorium,  appraisement,
exemption  and  homestead now provided or which may hereafter be provided by any
federal or state statute,  including, but not limited to, exemptions provided by
or allowed under any federal or state  bankruptcy or insolvency laws, both as to
itself and as to all of its  property,  whether  real or  personal,  against the
enforcement and collection of the obligations evidenced by this Note and any and
all extensions, renewals and modifications hereof, provided the foregoing waiver
shall not apply to any notice required under any express provision of the Senior
Loan Documents.

              15.  INTEREST NOT TO EXCEED MAXIMUM  PERMITTED BY LAW.  It  is the
intention  of the  parties  to  conform  strictly  to the usury  and other  laws
relating  to interest  from time to time in force,  and all  agreements  between
Borrower and Holder,  whether now existing or hereafter arising and whether oral
or written,  are hereby  expressly  limited so that in no  contingency  or event
whatsoever,  whether by acceleration of maturity hereof or otherwise,  shall the
amount paid or agreed to be paid to Holder,  or  collected  by Holder or for the
use,  forbearance or detention of the money to be loaned hereunder or otherwise,
or for the  payment or  performance  of any  covenant  or  obligation  contained
herein, in the Mortgage or in the Assignment, any other Loan Documents or in any
other security agreement given to secure the indebtedness of Borrower to Holder,
or in any other document heretofore,  now or hereafter  evidencing,  securing or
pertaining  to the  indebtedness  evidenced  hereby,  exceed the maximum  amount
permissible  under applicable  usury or such other laws (the "Maximum  Amount");
and without limiting the foregoing:

                   (a)  If  under  any  circumstances  whatsoever fulfillment of
              any provision hereof or of the Mortgage,  or any of the other Loan
              Documents, at the time performance of such provision shall be due,
              shall  involve  transcending  the Maximum Amount, then IPSO FACTO,
              the  obligation  to be fulfilled  shall be reduced to the  Maximum
              Amount;

                                      -9-
<PAGE>
                   (b)  For  the  purposes  of calculating  the actual amount of
              interest  paid  and/or  payable  hereunder,  in  respect  of  laws
              pertaining to usury or such  other  laws, all sums  paid or agreed
              to be paid  to  the  holder  hereof  for  the  use, forbearance or
              detention  of  the  indebtedness  of  Borrower  evidenced  hereby,
              outstanding  from time to time shall, to the extent  permitted  by
              applicable  law, be  amortized,  prorated,  allocated  and  spread
              from the date of  disbursement  of the proceeds of this Note until
              payment in full of all of such  indebtedness,  so that the  actual
              rate  of   interest  on  account  of  such indebtedness is uniform
              through the term hereof; and

                   (c)  The terms and provisions of this Section 15 and  Section
              16 hereof shall control and supersede every other provision of all
              agreements between Borrower or any endorser and Holder.

              16.  PAYMENT  IN  EXCESS  OF  MAXIMUM  AMOUNT.    If   under   any
circumstances  Holder shall ever receive an amount deemed interest by applicable
law, which would exceed the Maximum Amount,  such amount that would be excessive
interest  under  applicable  usury  laws or such  other  laws  shall be deemed a
payment in reduction  of the  Outstanding  Principal  and shall be so applied or
shall be applied to the principal  amount of other  indebtedness  secured by the
Mortgage and not the payment of interest,  or if such excessive interest exceeds
the Outstanding  Principal,  and any other  indebtedness of Borrower in favor of
Holder,  the excess  shall be deemed to have been a payment  made by mistake and
shall be  refunded to Borrower  or to any other  person  making such  payment on
Borrower's behalf.

              17.  GOVERNING  LAW  AND  CONSENT  TO  JURISDICTION.  Borrower and
Holder agree that, in all respects,  including all matters of  construction  and
performance,  the  obligations  arising under this Note shall be governed by and
construed in  accordance  with the laws of the State of Illinois.  Borrower does
hereby irrevocably and  unconditionally  submit to the personal  jurisdiction of
the  courts  of  the  State  of  Illinois  and  does  further   irrevocably  and
unconditionally  stipulate  and agree  that the  Federal  Courts in the State of
Illinois  shall (in addition to any  jurisdiction  of courts of which Holder may
elect to avail  itself)  have  jurisdiction  to hear and finally  determine  any
dispute,  claim,  controversy or action arising out of or connected (directly or
indirectly)  with the Loan and the Loan  Documents.  Borrower  does hereby agree
that final judgments in any action or proceedings shall be conclusive and may be
enforced  in any  other  jurisdiction  by suit on the  judgment  or in any other
manner provided by law. Nothing in this Note shall affect the right of Holder to
bring an action or  proceeding  against the  undersigned  or its property in the
courts of any other  jurisdiction.  To the extent that Borrower has or hereafter
may acquire  any  immunity  from  jurisdiction  of any court from legal  process
(whether through service or notice, attachment prior to judgment, attachment and
aid of  execution,  execution  or  otherwise),  with  respect to the  Borrower's
property,  Borrower hereby  unconditionally and irrevocably waives such immunity
in  respect  of its  obligations  under  the Loan and the  Loan  Documents.  The
foregoing consent, in advance, to the jurisdiction of the above-mentioned courts
is a material inducement for Holder to make the Loan.

              18.  NO JOINT VENTURE; INDEMNITY.  Borrower and Holder intend that
the  relationship  created  under this Note,  the  Mortgage,  and all other Loan
Documents be solely that of debtor and creditor or mortgagor and  mortgagee,  as
the case may be. Nothing herein or in the Mortgage is intended to create a joint
venture,  partnership,  tenancy-in-common,  or joint tenancy  relationship among

                                      -10-
<PAGE>
Borrower and/or  Beneficiary and Holder, nor to grant Holder any interest in the
Property  other than that of creditor or  mortgagee,  it being the intent of the
parties  hereto that Holder  shall have no liability  whatsoever  for any losses
generated by or incurred  with respect to the Property nor shall Holder have any
control over the day to day management for operations of the Property. The terms
and  provisions of this Section  shall  control and  supersede  over every other
provision  and all other  agreements  among  Borrower,  Beneficiary  and Holder.
Borrower  hereby agrees to indemnify and hold Holder  harmless and defend Holder
against any loss or liability,  cost or expense (including,  without limitation,
reasonable   attorneys'  fees  and  disbursements)  and  all  claims,   actions,
procedures and suits arising out of or in connection  with any  construction  of
the  relationship  of Borrower and Holder as that of joint  ventures,  partners,
tenants in common,  joint tenants or any relationship  other than that of debtor
and creditor,  or any assertion  that such a  construction  should be made,  and
arising out of a claim,  assertion or litigation  directly or indirectly brought
by, or on behalf of Borrower or Beneficiary, its partners or their partners. The
foregoing   indemnity   shall  survive  the  repayment  of  this  Note  and  the
satisfaction  of the Mortgage and shall  continue so long as any  liability  for
which the indemnity is given may exist or arise.

              19.  TIME OF ESSENCE.  Time is of the  essence of this Note and of
each provision in which time is an element.

              20.  WAIVER OF JURY TRIAL.  BORROWER HEREBY KNOWINGLY, VOLUNTARILY
AND  INTENTIONALLY  WAIVES  THE  RIGHT  TO A TRIAL  BY JURY  IN  RESPECT  OF ANY
LITIGATION  BASED HEREON,  ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS NOTE
OR ANY OTHER LOAN DOCUMENTS CONTEMPLATED TO BE EXECUTED IN CONJUNCTION HEREWITH,
OR ANY COURSE OF CONDUCT,  COURSE OF  DEALINGS,  STATEMENTS  (WHETHER  VERBAL OR
WRITTEN) OR ACTIONS OF EITHER PARTY: THIS WAIVER BEING A MATERIAL INDUCEMENT FOR
HOLDER TO ACCEPT THIS NOTE.

              21.  DATE OF PERFORMANCE.  If the date for the  performance of any
term,  provision or  condition  (monetary  or  otherwise)  under this Note shall
happen to fall on a  Saturday,  Sunday  or  non-Business  Day,  the date for the
performance  of such  term,  provision  or  condition  shall,  at the  option of
Borrower or Holder, be extended to the next succeeding  Business Day immediately
thereafter occurring, with interest on the Outstanding Principal at the Interest
Rate  provided in this Note to such next  succeeding  Business Day if such term,
provision or condition shall result in the extension of any monetary payment due
to Holder.

              22.  RECEIPT  OF  PAYMENT.   Any  payment  which  is  made by wire
transfer or other immediately  available funds and which is actually received by
Holder prior to 2:00 p.m.  shall be deemed to have been  received and cleared by
Holder on the date of receipt.

              23.  BINDING UPON SUCCESSORS AND ASSIGNS.  The  provisions of this
Note shall bind Borrower and its successors and assigns; provided, however, that
nothing  herein shall be construed as permitting  Borrower to take any action in
violation of the Mortgage.

              24.  DISCLAIMER. The  Loan  Documents  are intended solely for the
benefit of Borrower and Holder and their successors and assigns;  no third party
shall have any rights or interest in any  provisions of the Loan Documents or as
a result of any  action or  inaction  of Holder  in  connection  therewith.  Any
actions  taken by Holder or any  representative  of Holder (to review  plans and


                                      -11-
<PAGE>
specifications,  to inspect the Property or  otherwise)  are solely for Holder's
protection  and neither the  Borrower  nor any other person shall be entitled to
rely upon any such action.

              25.  PRIOR AGREEMENTS. The Loan Documents supersede and cancel all
prior loan applications,  commitments,  agreements and  understandings,  whether
oral or  written,  with  respect  to the  Loan,  and all  prior  agreements  and
understandings are merged into the Loan Documents.

              26.  SEVERABILITY.  Wherever possible, each provision of this Note
shall  be  interpreted  in  such  manner  as to be  effective  and  valid  under
applicable  law,  but if any  provision of this Note shall be  prohibited  by or
invalid under such law, such  provision  shall be  ineffective  to the extent of
such  prohibition  or  invalidity,  without  invalidating  the remainder of such
provision or the remaining provisions of this Note.

              27.  CONSENT  TO  EXTENSIONS  AND  RELEASES  OF  COLLATERAL.   The
Borrower and any endorsers,  sureties,  guarantors and all others who are or may
become liable for the payment hereof (a) expressly  consent to all extensions of
time,  renewals,  postponements  of  time of  payment  of  this  Note  or  other
modifications  hereof from time to time (other than modifications which increase
the  amount of the Loan or cause  Borrower  to incur  expenditures)  prior to or
after the Maturity Date without notice,  consent or  consideration to any of the
foregoing,  (b)  expressly  agree to any  substitution,  exchange,  addition  or
release of any party or person primarily or secondarily  liable hereon,  and (c)
expressly  agree that Holder shall not be required  first to institute any suit,
or to exhaust its remedies  against the undersigned or any other person or party
to become  liable  hereunder  or against  the other Loan  Documents  in order to
enforce the payment of this Note.

              28.  NOTICES.  All  notices and other  communications  required or
permitted to be made or given  pursuant  hereto by one party to another shall in
each case be in writing  (except where oral or telephone  notice is specifically
permitted  pursuant to the provisions  hereof or of any other Loan Document) and
shall be  deemed  effectively  made or given  when  personally  delivered,  when
transmitted by telecopier (with written  confirmation by certified mail, postage
prepaid,  return  receipt  requested  on the date the  telecopy  is sent) on the
Business Day next following  prepaid delivery to an overnight  messenger service
(such as, by way of example,  Federal Express  Company,  or equivalent) or three
(3) days after having been deposited in the United States Mail, postage prepaid,
certified mail, return, receipt requested,  address as follows, or at such other
address as the parties may from time to time by notice direct.

                   If to Borrower:  c/o Continental Towers Associates-I, L.P.
                                    c/o CTA Partner, L.L.C.
                                    77 West Wacker Drive
                                    Suite 3900
                                    Chicago, Illinois  60601
                                    Attn:   Richard S. Curto
                                    Fax:    (312) 917-4230

                   with copy to:    Winston & Strawn
                                    35 West Wacker Drive
                                    Chicago, Illinois  60601
                                    Attn:   Wayne D. Boberg
                                    Fax:    (312) 558-5700


                                      -12-
<PAGE>
                   if to Holder:    Connecticut General Life Insurance Company
                                    c/o CIGNA Investments, Inc.
                                    900 Cottage Grove Road
                                    Hartford, Connecticut  06152-2319
                                    Attn:   Investment Services, S-319
                                    Fax:    (860) 726-6328

                   with a copy to:  Goldberg, Kohn, Bell, Black,
                                      Rosenbloom & Moritz, Ltd.
                                    55 East Monroe Street
                                    Suite 3700
                                    Chicago, Illinois 60603
                                    Attn:   Stephen B. Bell
                                    Fax:    (312) 332-2196

              29.  LIMITATION OF LIABILITY.  The  undersigned  has executed this
instrument  solely in its capacity as trustee,  and not personally.  No personal
liability shall be asserted against the trustee, personally, arising out of this
instrument,  it being  understood  and agreed that all such  liability  shall be
limited to Holder's  rights  against (i) the  Beneficiary  to the extent  herein
provided,  (ii) the Property,  including the Assignment,  and/or (iii) any other
security  given for repayment of the Loan.  Neither  Beneficiary  nor any of the
general partners of Beneficiary  (collectively  called the "Obligated  Parties")
shall under any  circumstances be personally  liable for the repayment of any of
the principal  of,  interest on, or  prepayment  fees or late charges,  or other
charges  or  fees,  including,  without  limitation,  attorneys'  fees,  due  in
connection with, the Loan or for any deficiency judgment which Holder may obtain
after foreclosure of the Mortgage after default by Borrower;  provided, however,
that the Obligated  Parties shall be personally  liable to the extent more fully
provided in the Mortgage.  Nothing  herein shall be deemed to be a waiver of any
right which Holder may have under Sections 506(a),  506(b), 1111(b) or any other
provision  of the  Bankruptcy  Reform  Act of 1978 or any  successor  thereto or
similar  provisions  under  applicable  state  law to file a claim  for the full
amount of the debt owing to Holder by Borrower or to require that all collateral
shall continue to secure all of the  indebtedness  owing to Holder in accordance
with the Loan Documents.






















                                      -13-
<PAGE>
                  IN WITNESS  WHEREOF,  Borrower has executed this instrument by
its duly authorized signatories on the date first above written.

                                     AMERICAN NATIONAL BANK AND TRUST COMPANY OF
                                     CHICAGO, a national banking association,
                                     not personally, but solely as trustee under
                                     trust agreement dated July 26, 1977 and
                                     known as Trust No. 40935

                                     By \s\ Mark J. De Grazia
                                         --------------------------------------
                                     Its Trust Officer
                                         --------------------------------------
ATTEST:

Attestation not required by 
American National Bank and Trust
Company of Chicago Bylaws
- --------------------------------

                                     AMERICAN NATIONAL BANK AND TRUST COMPANY OF
                                     CHICAGO, a national banking association, as
                                     successor trustee to First Bank,  N.A.,  as
                                     successor trustee to National Boulevard
                                     Bank of Chicago, not personally, but solely
                                     as trustee under trust agreement dated
                                     September 27,  1976  and  known  as Trust
                                     No. 5602

                                     By  \s\ Mark J. De Grazia
                                         --------------------------------------
                                     Its Trust Officer
                                         --------------------------------------
ATTEST:

Attestation not required by 
American National Bank and Trust
Company of Chicago Bylaws
- --------------------------------



















                                      -14-
<PAGE>
                                   SCHEDULE A

                           SUBORDINATED LOAN DOCUMENTS

              1.   Loan  Modification  and  Amended  and Restated Loan Agreement
dated as of June 1, 1995 (as amended, the "JUNIOR LOAN AGREEMENT"), by and among
American  National Bank and Trust  Company of Chicago,  not  personally,  but as
Trustee of Trust No. 40935 ("TRUST 40935"),  Continental  Towers  Associates - I
("CTA"), Roland E. Casati ("CASATI"),  Richard E. Heise ("HEISE"),  Casati-Heise
Partnership ("C/H") and General Electric Capital Corporation ("GECC"), which was
recorded  in  the  office  of the  Recorder  of  Deeds,  Cook  County,  Illinois
("RECORDER'S OFFICE") on August 17, 1995 as Doc. No. 95545031.

              2.   First Amendment to Loan Modification and Amended and Restated
Loan Agreement by and among Trust 40935, CTA, Casati, Heise, C/H and GECC, which
was  recorded  in the  Recorder's  Office on December  17, 1997 as Document  No.
97947240.

              3.   Amended  and Restated  First  Mortgage dated as of October 1,
1991  from  Trust  40935  and  joined  in by C/H to  GECC  and  recorded  in the
Recorder's  Office as Document No.  92001888,  as amended by the First Amendment
and the Second Amendment (together with the Supplemental  Mortgage and as either
has been amended, the "JUNIOR MORTGAGE").

              4.   Assignment  of  Leases and Rents dated as of October 1, 1991,
from Trust  40935 and joined in by C/H to GECC and  recorded  in the  Recorder's
Office as Document  92001889,  as amended by the First  Amendment and the Second
Amendment.

              5.   First  Amendatory  Agreement dated as of April 30, 1993  (the
"FIRST AMENDMENT") executed and delivered by and among the Parties,  which First
Amendment  was duly filed for record and  recorded in the  Recorder's  Office as
Document No. 93-434372 on June 9, 1993.

              6.   Second  Amendatory  Agreement  dated  as of November 1,  1994
(the "SECOND AMENDMENT") executed and delivered by and among the Parties,  which
Second Amendment was duly filed for record and recorded in the Recorder's Office
as Document No. 94084292, on December 30, 1994.

              7.   Supplemental First Mortgage and Security Agreement dated June
1, 1995, from First Bank, N.A. as successor  trustee to National  Boulevard Bank
of Chicago,  not  personally,  but solely as Trustee of Trust No.  5602  ("TRUST
5602"),  with  joinder  by CTA,  in favor of GECC,  which  was  recorded  in the
Recorder's  Office on August 17, 1995 as Doc. No.  95545032  (the  "SUPPLEMENTAL
MORTGAGE").

              8.   1997 Promissory Note ("1997  PROMISSORY  NOTE") dated October
1, 1991 Amended and Restated as of the  Effective  Date December 12, 1997 in the
amount of $163,103,099.24 made by Trust 40935 in favor of GECC.

              9.   Hazardous  Substances Indemnity Agreement dated as of October
1, 1991, as amended by the Loan Agreement.

              10.  All UCC financing statements executed  in connection with any
of the foregoing.

              11.  1998   Agreement  of  even  date  herewith  among  Mortgagor,
Beneficiary and Prime.
                                       -1-
<PAGE>
                                   SCHEDULE B

                               PREPAYMENT PREMIUM

Prepayment  Premium  is  defined  as the  greater  of (A) 1% of the  Outstanding
Principal or (B) the sum of the Present  Values  (defined  below) on the date of
repayment  of each Monthly  Interest  Shortfall  (defined  below) for the period
commencing on the date of repayment of the  Outstanding  Principal and ending on
the Seventh  Anniversary  (or, if the Reset Terms have been accepted,  ending on
the  Maturity  Date) (as  applicable,  the  "TERM")  discounted  at the  monthly
Treasury Yield plus 50 basis points.

The Monthly Interest  Shortfall is calculated for each monthly scheduled payment
date  and  is the  product  of (i)  the  positive  difference,  if  any,  of the
Semi-Annual  Equivalent  Rate  less the  Treasury  Yield  plus 50 basis  points,
divided by 12 times (ii) the Outstanding Principal on the first day of the month
for which the  calculation is made for each full and partial month  remaining in
the Term.

The Present  Value is then  determined  by  discounting  each  Monthly  Interest
Shortfall at the Treasury Yield plus 50 basis points divided by twelve.

FOR EXAMPLE:  If an investment  with an Interest Rate of 9% were prepaid with 24
months remaining in the Term, at a time when Federal Reserve Statistical Release
H.15(519)  reported a two-year  Treasury Yield of 6.5%, and the outstanding loan
balance was $10,000,000 then:

     Semi-Annual Equivalent Rate                                     .0917
     Less the Treasury Yield plus 50 basis points                   (.0700)
                                                              ------------
     Equals the positive rate difference divided by 12               .0217
     Equals the monthly rate difference                            .001808
     Times the Outstanding Principal                         x $10,000,000
                                                              ------------
     Equals the monthly interest shortfall                      $18,080.00

The sum of the  Present  Values of each  Monthly  Interest  Shortfall  ($18,080)
discounted at the monthly  Treasury Yield plus 50 basis points (7% divided by 12
or .58333%) equals $403,818.60.

The  "SEMI-ANNUAL  EQUIVALENT  RATE" in respect of the Interest Rate of 7.22% is
7.329%.

The  "TREASURY  YIELD"  will be  determined  by  reference  to  Federal  Reserve
Statistical  Release  H.15(519)  of  Selected  Interest  Rates  (or any  similar
successor publication of the Federal Reserve) for the first week ending not less
than two full weeks prior to the prepayment  date. If the remaining Term is less
than one year,  the  Treasury  Yield will  equal the yield for  1-Year  Treasury
Constant Maturities.  If the remaining Term is equal to one of the maturities of
the Treasury Constant Maturities (e.g., 1 year, 2-year, etc.), then the Treasury
Yield will equal the yield for the Treasury  Constant  Maturity  with a maturity
equaling the remaining  Term. If the remaining  Term is longer than one year but
does not equal one of the maturities of the Treasury Constant  Maturities,  then
the  Treasury  Yield will  equal the yield for the  Treasury  Constant  Maturity
closest to but not exceeding the remaining Term.



                                      -1-
<PAGE>
Notwithstanding  the  foregoing,  if the event  giving  rise to the  payment  of
Prepayment  Premium  occurs during the Closed  Period,  the  Prepayment  Premium
calculated  pursuant to the  foregoing  provisions  of this  Schedule B shall be
increased by an amount equal to 2% of the Outstanding Principal.






















































                                      -2-

<TABLE> <S> <C>

<ARTICLE>                     5
<MULTIPLIER>              1,000
       
<S>                                       <C>
<PERIOD-TYPE>                              YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               JUN-30-1998
<CASH>                                          13,167
<SECURITIES>                                         0
<RECEIVABLES>                                  108,017
<ALLOWANCES>                                         0
<INVENTORY>                                     67,570 <F1>
<CURRENT-ASSETS>                                     0
<PP&E>                                         846,398
<DEPRECIATION>                                 (12,424)
<TOTAL-ASSETS>                               1,022,728
<CURRENT-LIABILITIES>                          211,357 <F2>
<BONDS>                                        452,951
                                0
                                         60
<COMMON>                                           156
<OTHER-SE>                                     358,204
<TOTAL-LIABILITY-AND-EQUITY>                 1,022,728
<SALES>                                              0
<TOTAL-REVENUES>                                65,674
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                43,959 <F3>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              14,476
<INCOME-PRETAX>                                  7,239
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                    525
<CHANGES>                                            0
<NET-INCOME>                                     6,714
<EPS-PRIMARY>                                     0.32
<EPS-DILUTED>                                     0.32
<FN>
<F1>Amount includes restricted cash escrows ($10,484), net deferred costs
($32,033) and other assets ($25,053).
<F2>Amount includes accrued interest payavle ($1,703), accrued real estate taxes
($25,420), accounts payable and accrued expenses ($17,721), liabilities for
leases assumed ($5,083), dividends declares ($6,597), other liabilities ($5,712)
and minority interest of ($149,121).
<F3>Amount includes property operations ($11,941), real estate taxes ($12,232),
depreciation and amortization ($11,575), general and administrative expenses
($3,044) and minority interest allocation of ($5,167).
</FN>

        


</TABLE>


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