PRIME GROUP REALTY TRUST
10-Q, 2000-05-15
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 March 31, 2000

          ( ) 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 May 11, 2000, 15,763,638 of the Registrant's Common Shares of Beneficial
Interest were outstanding.

<PAGE>

                            Prime Group Realty Trust
                                    Form 10-Q

                                      INDEX


Part I:       Financial Information

Item 1.       Financial Statements (Unaudited)                             PAGE

              Consolidated Balance Sheets as of March 31, 2000 and
                December 31, 1999                                            3

              Consolidated Statements of Income for the Three Months
                 Ended March 31, 2000 and 1999                               4

              Consolidated Statements of Cash Flows for the Three
                 Months Ended March 31, 2000 and 1999                        5

              Notes to Consolidated Financial Statements                   6-11


Item 2.       Management's Discussion and Analysis of Financial
                Condition and Results of Operations                       12-17

Item 3.       Quantitative and Qualitative Disclosures About
                Market Risk                                                 18

Part II:      Other Information

Item 1.       Legal Proceedings                                             19
Item 2.       Changes in Securities                                         19
Item 3.       Defaults Upon Senior Securities                               19
Item 4.       Submission of Matters to a Vote of Security Holders           19
Item 5.       Other Information                                             19
Item 6.       Exhibits and Reports on Form 8-K                              19

Signatures                                                                  20

                                     - 2 -

<PAGE>

                          PART I. FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS

                            PRIME GROUP REALTY TRUST
                           CONSOLIDATED BALANCE SHEETS
                       (000'S OMITTED, EXCEPT SHARE DATA)
                                   (UNAUDITED)

<TABLE>
<CAPTION>

                                                                                  MARCH 31,            DECEMBER 31,
                                                                                   2000                   1999
                                                                            ----------------------------------------
<S>                                                                         <C>                       <C>
ASSETS
Real estate, at cost:
   Land                                                                            $  185,917         $  183,295
   Building and improvements                                                          941,690            928,567
   Tenant improvements                                                                 43,476             39,232
                                                                            ----------------------------------------
                                                                                    1,171,083          1,151,094
   Accumulated depreciation                                                           (45,750)           (37,977)
                                                                            ----------------------------------------
                                                                                    1,125,333          1,113,117
   Property under development                                                         132,040            125,724
                                                                            ----------------------------------------
                                                                                    1,257,373          1,238,841
Mortgage note receivable                                                               87,343             82,687
Cash and cash equivalents                                                              16,995             21,167
Tenant receivables                                                                      9,586             11,438
Restricted cash escrows                                                                41,853             42,140
Deferred rent receivable                                                               11,744              9,501
Deferred costs, net                                                                    27,140             26,901
Other                                                                                  13,976             11,500
                                                                            ----------------------------------------
Total assets                                                                       $1,466,010         $1,444,175
                                                                            ========================================

LIABILITIES AND SHAREHOLDERS' EQUITY
Mortgage notes payable                                                             $  736,759        $   705,194
Credit facilities                                                                      19,027             19,527
Bonds payable                                                                          74,450             74,450
Accrued interest payable                                                                3,881              3,508
Accrued real estate taxes                                                              31,740             40,689
Accounts payable and accrued expenses                                                  34,779             36,133
Liabilities for leases assumed                                                          2,957              3,235
Dividends payable                                                                       8,154              8,122
Other                                                                                  10,481             10,909
                                                                            ----------------------------------------
Total liabilities                                                                     922,228            901,767
Minority interests:
   Operating Partnership                                                              170,215            168,070
   Other                                                                                1,000              1,000
Series A - Cumulative Convertible Preferred Shares, 2,000,000 shares designated,
   issued and outstanding at March 31, 2000 and December 31, 1999                      39,740             39,703
Shareholders' equity:
   Preferred Shares, $0.01 par value; 30,000,000 shares authorized:
       Series B - Cumulative Redeemable Preferred Shares, 4,000,000
         shares designated, issued and outstanding at March 31,
         2000 and December 31, 1999                                                        40                 40
   Common Shares, $0.01 par value; 100,000,000 shares authorized; 15,271,678 and
     15,189,438 shares issued and outstanding at March 31, 2000 and December 31,
     1999, respectively                                                                   153                152
   Additional paid-in capital                                                         322,168            321,357
   Retained earnings                                                                   10,466             12,086
                                                                            ----------------------------------------
Total shareholders' equity                                                            332,827            333,635
                                                                            ----------------------------------------
Total liabilities and shareholders' equity                                         $1,466,010         $1,444,175
                                                                            ========================================
</TABLE>

                 See notes to consolidated financial statements.

                                     - 3 -
<PAGE>

                            PRIME GROUP REALTY TRUST

                        CONSOLIDATED STATEMENTS OF INCOME
                     (000'S OMITTED, EXCEPT PER SHARE DATA)
                                   (UNAUDITED)

<TABLE>
<CAPTION>

                                                                                        THREE MONTHS ENDED
                                                                                             MARCH 31
                                                                                      2000              1999
                                                                                ------------------------------------
<S>                                                                             <C>                     <C>
REVENUE
Rental                                                                                $ 33,854          $32,616
Tenant reimbursements                                                                   16,472           12,901
Other property revenues                                                                  2,213            1,766
Mortgage note interest                                                                   2,011            1,506
Other                                                                                      925              847
                                                                                ------------------------------------
Total revenue                                                                           55,475           49,636

EXPENSES
Property operations                                                                     12,810           10,650
Real estate taxes                                                                       10,389            9,375
Depreciation and amortization                                                            9,232            7,958
Interest                                                                                12,986           10,378
Loss on treasury lock termination                                                            -              557
Loss on land development option                                                              -              600
General and administrative                                                               2,264            2,050
                                                                                ------------------------------------
Total expenses                                                                          47,681           41,568
                                                                                ------------------------------------
Income before gain on sales of real estate and minority
   interests                                                                             7,794            8,068
Gain on sales of real estate, net                                                        1,196                -
                                                                                ------------------------------------
Income before minority interests                                                         8,990            8,068
Minority interests                                                                      (2,420)          (2,056)
                                                                                ------------------------------------
Net income                                                                               6,570            6,012
Net income allocated to preferred shareholders                                          (3,037)          (3,000)
                                                                                ------------------------------------
Net income available to common shareholders                                           $  3,533          $ 3,012
                                                                                ====================================

Basic earnings available to common shares per weighted-average common share:
     Income before gain on sales of real estate                                       $   0.18         $   0.20
     Gain on sales of real estate, net of minority interests                              0.05                -
                                                                                ------------------------------------
Net income available per weighted-average common share of beneficial
   interest - basic                                                                   $   0.23         $   0.20
                                                                                ====================================

Diluted earnings available to common shares per weighted-average common share:
     Income before gain on sales of real estate                                       $   0.18         $   0.20
     Gain on sales of real estate, net of minority interests                              0.05                -
                                                                                ------------------------------------
Net income available per weighted-average common share of beneficial
   interest - diluted                                                                 $   0.23         $   0.20
                                                                                ====================================
</TABLE>

                 See notes to consolidated financial statements.

                                     - 4 -
<PAGE>

                            PRIME GROUP REALTY TRUST
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (000'S OMITTED)
                                   (UNAUDITED)

<TABLE>
<CAPTION>

                                                                                        THREE MONTHS ENDED
                                                                                             MARCH 31
                                                                                      2000              1999
                                                                                ------------------------------------
<S>                                                                             <C>                     <C>
OPERATING ACTIVITIES
Net income                                                                             $  6,570         $  6,012
Adjustments to reconcile net income to net cash provided by operating
   activities:
     Amortization of costs for leases assumed (included in rental revenue)                  162              245
     Interest income and development fees added to mortgage note receivable
       principal                                                                         (1,145)            (456)
     Net equity in loss of unconsolidated investments                                       770              178
     Depreciation and amortization                                                        9,232            7,958
     Loss on treasury lock termination                                                        -              557
     Loss on land development option                                                          -              600
     Gain on sales of real estate, net                                                    1,196                -
     Minority interests                                                                   2,420            2,056
     Changes in operating assets and liabilities:
       Decrease (increase) in tenant receivables                                          1,844           (3,550)
       Increase in deferred rent receivable                                              (2,254)            (594)
       (Increase) decrease in other assets                                                  103            3,653
       Increase in accrued interest payable                                                 373              841
       (Decrease) increase in accrued real estate taxes                                  (8,949)           9,135
       Increase (decrease) in accounts payable and accrued expenses                      (1,351)           (4,724)
       Decrease in liabilities for leases assumed                                          (278)            (277)
       Decrease in other liabilities                                                       (430)            (216)
                                                                                ------------------------------------
Net cash provided by operating activities                                                 8,263           21,418

INVESTING ACTIVITIES
Expenditures for real estate and equipment                                              (32,043)        (157,324)
Proceeds from sales of real estate                                                        8,340                -
Leasing costs                                                                              (781)            (941)
Additional advances on mortgage note receivable                                          (3,511)            (839)
Decrease in restricted cash escrows                                                         287           25,127
Option deposits                                                                               -          (18,000)
Net (loans to) repayments from services company                                          (2,991)             672
                                                                                ------------------------------------
Net cash used in investing activities                                                   (30,699)        (151,305)

FINANCING ACTIVITIES
Financing costs                                                                          (1,026)            (849)
Deposits recovered on treasury lock agreements                                                -            9,215
Proceeds from mortgage notes payable                                                     42,805           72,000
Net (repayments of) proceeds from credit facilities                                        (500)          28,595
Repayment of mortgage notes payable                                                     (11,240)          (1,378)
Distribution to minority interest - Operating Partnership                                (3,653)          (3,482)
Dividends paid to Series B-Preferred shareholders                                        (2,250)          (2,250)
Dividends paid to Series A-Preferred shareholders                                          (750)            (730)
Dividends paid to common shareholders                                                    (5,122)          (5,100)
                                                                                ------------------------------------
Net cash provided by financing activities                                                18,264           96,021
                                                                                ------------------------------------
Net decrease in cash and cash equivalents                                                (4,172)         (33,866)
Cash and cash equivalents at beginning of period                                         21,167           46,500
                                                                                ------------------------------------
Cash and cash equivalents at end of period                                              $16,995         $ 12,634
                                                                                ====================================
</TABLE>

                 See notes to consolidated financial statements.

                                     - 5 -
<PAGE>

                            PRIME GROUP REALTY TRUST
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


1.   BASIS OF PRESENTATION

The accompanying unaudited consolidated 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 three month period ended March 31, 2000
are not necessarily indicative of the results that may be expected for the year
ended December 31, 2000. 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 year ended December 31, 1999 as filed
with the Securities and Exchange Commission on March 24, 2000 ("Form 10-K").

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

2.   FORMATION AND ORGANIZATION OF THE COMPANY

Prime Group Realty Trust (the "Company") was organized in Maryland on July 21,
1997 and intends to qualify as a real estate investment trust ("REIT") under the
Internal Revenue Code of 1986, as amended, for Federal income tax purposes. The
Company is the managing general partner of Prime Group Realty, L.P. (the
"Operating Partnership") and owns all of the preferred units and 57.9% and 58.4%
of the common units of the Operating Partnership issued at March 31, 2000 and
December 31, 1999, respectively. Each common unit entitles the Company to
receive distributions from the Operating Partnership. Distributions declared or
paid to holders of common shares and preferred shares are based upon such
distributions the Company receives with respect to its common units and
preferred units.

3.   INCOME TAXES

The Company elected to be taxed as a 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.

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.

                                     - 6 -

<PAGE>

5.   RECENT DEVELOPMENTS

During the period from January 1, 2000 through March 31, 2000, the Company
acquired and sold the following office and industrial properties, parcels of
land and its one retail center (See "Management's Discussion and Analysis of
Financial Condition and Results of Operations - Liquidity and Capital Resources"
for a description of the debt terms.):

<TABLE>
<CAPTION>

                                                          NET           ACQUISITION
                                                       RENTABLE         COST/SALES
                                                        SQUARE           PRICE (IN    MORTGAGE DEBT     MONTH
             PROPERTY                   LOCATION          FEET           MILLIONS)    (IN MILLIONS)  ACQUIRED/SOLD
- --------------------------------------------------------------------------------------------------------------------
<S>                               <C>                  <C>              <C>          <C>               <C>
ACQUIRED
Office:
   Enterprise Center II (1)       Westchester, IL             62,559         $ 9.1           $5.5      January

Industrial:
   6700 Touhy Avenue              Niles, IL                  120,000           4.9            3.0      March
                                                       -----------------------------------------------
                                                             182,559         $14.0           $8.5
                                                       ===============================================
Land:
   Libertyville Office II         Libertyville, IL         7.5 Acres         $ 1.2           $  -      January
   Carol Stream (2)(3)            Carol Stream, IL        29.1 Acres           3.8              -      March
                                                       -----------------------------------------------
                                                          36.6 Acres         $ 5.0           $  -
                                                       ===============================================
SOLD
Land:
   Carol Stream Land (3)          Carol Stream, IL        46.1 Acres         $ 7.4           $  -      March
                                                       ===============================================

Retail Center:
  371-385 Gary Avenue (4)         Carol Stream, IL             11,276         $ 1.1           $  -      March
                                                       ===============================================
</TABLE>


(1)    Acquisition cost includes cash paid at closing, the proceeds of a
       mortgage note payable plus prorations and accrued real estate
       taxes.

(2)    This parcel was acquired from a minority interest unit holder of the
       Operating Partnership or one or more of its affiliates for a total of
       $3.8 million in common units.

(3)    On March 27, 2000, the Company sold this land for a total sales price
       of $7,400, resulting in a gain of $1,326.

(4)    On March 31, 2000, the Company sold this property for $1,100,
       resulting in a loss of $130.

On March 20, 2000, the Company entered into an interest rate cap agreement for
the period from March 20, 2000 through November 17, 2000 for a notional amount
of $70.0 million. The interest rate under the agreement is capped at a LIBOR
index rate of 8.0%.

                                     - 7 -

<PAGE>

6.   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 for the three
months ended March 31, 2000 and 1999:

<TABLE>
<CAPTION>

                                                                                          2000              1999
                                                                                ------------------------------------
<S>                                                                             <C>                     <C>
Numerator:
   Income before gain on sales of real estate, minority interests, and
     preferred distributions                                                          $     7,794       $    8,068
   Minority interests                                                                      (1,934)          (2,056)
   Net income allocated to preferred distributions                                         (3,037)          (3,000)
                                                                                ------------------------------------
   Income before gain on sales of real estate                                               2,823            3,012
   Gain on sales of real estate, net of minority interests                                    710                -
                                                                                ------------------------------------
Numerator for earnings per share - income available to common shares                  $     3,533       $    3,012
                                                                                ====================================

Denominator:
   Denominator for basic earnings per share-weighted-average common shares             15,215,512       15,131,849
Effect of dilutive securities:
   Employee stock options                                                                  34,531            2,262
   Employee stock grants                                                                   39,962                -
                                                                                ------------------------------------
Denominator for diluted earnings per share - adjusted weighted-average
   common shares and assumed conversions                                               15,290,005       15,134,111
                                                                                ====================================

BASIC EARNINGS AVAILABLE TO COMMON SHARES PER WEIGHTED-AVERAGE COMMON SHARE
Income before gain on sales of real estate                                           $      0.18      $      0.20
Gain on sales of real estate, net of minority interests                                     0.05               -
                                                                                ------------------------------------
Net income available per weighted-average common share of beneficial
   interest - basic                                                                  $      0.23      $      0.20
                                                                                ====================================

DILUTED EARNINGS AVAILABLE TO COMMON SHARES PER WEIGHTED-AVERAGE COMMON SHARE
Income before gain on sales of real estate                                           $      0.18      $      0.20
Gain on sales of real estate, net of minority interests                                     0.05               -
                                                                                ------------------------------------
Net income available per weighted-average common share of beneficial
   interest - diluted                                                                $      0.23      $      0.20
                                                                                ====================================
</TABLE>

Options to purchase 2,009,954 and 1,122,833 of the Company's common shares were
excluded in the computation of diluted earnings available to common shares for
the three months ended March 31, 2000 and 1999, respectively, because the effect
would be antidilutive.

The Company had 10,848,313 and 10,328,512 weighted-average common units
outstanding during the three months ended March 31, 2000 and 1999, respectively,
of which 9,347,248 and 9,390,799, respectively, may be converted (on a one for
one basis) into common shares 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 Series A preferred shares outstanding during the three
months ended March 31, 2000 and 1999 which were not included in the computation
of diluted earnings per share because the conversion would have been
antidilutive.

                                     - 8 -
<PAGE>

7.   SEGMENT REPORTING

The following summarizes the Company's historical segment operating results for
the three months ended March 31, 2000 and 1999 (Amounts in thousands):

<TABLE>
<CAPTION>

                                                               Three months ended March 31, 2000
                                                   -------------------------------------------------------------
                                                                                      Corporate/
                                                                                      Operating
                                                    Office          Industrial       Partnership         Total
                                                   -------------------------------------------------------------
<S>                                                <C>               <C>               <C>              <C>
Total revenue                                      $ 48,743          $ 5,704           $ 2,224          $ 56,671
Total expenses                                       28,454            3,977            15,250            47,681
                                                   -------------------------------------------------------------
Income (loss) before minority interests              20,289            1,727           (13,026)            8,990
FFO adjustments:
   Real estate depreciation and
     amortization                                     6,729            1,477                 -             8,206
   Straight-line rental revenue                      (1,979)            (275)                -            (2,254)
   Straight-line rental revenue from
     joint venture                                     (158)               -                 -              (158)
   Amortization of costs for leases
     assumed                                            162                -                 -               162
   Joint venture adjustments                            863                -                 -               863
   Adjustments for sale of operating
     property                                           130                -                 -               130
   Net income allocated to preferred
     shareholders                                         -                -            (3,037)           (3,037)
                                                   -------------------------------------------------------------
Funds from operations excluding
     straight-line rental revenue                    26,036            2,929           (16,063)           12,902
   Straight-line rental revenue                       1,979              275                 -             2,254
   Straight-line rental revenue from
     joint venture                                      158                -                 -               158
                                                   -------------------------------------------------------------
Funds from operations including
     straight-line rental revenue                  $ 28,173          $ 3,204          $(16,063)         $ 15,314
                                                  ==============================================================
</TABLE>

<TABLE>
<CAPTION>

                                                               Three months ended March 31, 1999
                                                  ==============================================================
                                                                                   Corporate/
                                                                                    Operating
                                                  Office          Industrial       Partnership         Total
                                                  --------------------------------------------------------------
<S>                                               <C>             <C>              <C>                 <C>
Total revenue                                       $42,306           $6,676           $   654           $49,636
Total expenses                                       23,732            3,879            13,957            41,568
                                                   -------------------------------------------------------------
Income (loss) before minority interests              18,574            2,797           (13,303)            8,068
FFO adjustments:
   Real estate depreciation and amortization          5,773            1,560                 -             7,333
   Straight-line rental revenue                        (514)             (80)                -              (594)
   Amortization of costs for leases assumed             245                -                 -               245
   Net income allocated to preferred
     shareholders                                         -                -            (3,000)           (3,000)
                                                   -------------------------------------------------------------
   Funds from operations excluding
     straight-line rental revenue                    24,078            4,277           (16,303)           12,052
   Straight-line rental revenue                         514               80                 -               594
                                                   -------------------------------------------------------------
Funds from operations, including
straight-line rental revenue (1)                    $24,592           $4,357          $(16,303)          $12,646
                                                   -------------------------------------------------------------
</TABLE>

                                     - 9 -
<PAGE>

7.   SEGMENT REPORTING (CONTINUED)

(1)  The Company has restated funds from operations for the three months ended
     March 31, 1999 to be in compliance with the National Association of Real
     Estate Investment Trusts' ("NAREIT") revised October, 1999 standard for
     funds from operations, which became effective January 1, 2000 (See "Funds
     from Operations"). Accordingly, the Company has excluded the following
     previously included adjustments: (i) loss on treasury lock termination of
     $557 and (ii) loss on land development option of $600.

The following summarizes the Company's segment assets and activity as of March
31, 2000 and December 31, 1999 and for the three months ended March 31, 2000 and
1999:

<TABLE>
<CAPTION>

                                                                               March 31,        December 31,
                                                                                2000                1999
                                                                            ---------------------------------
<S>                                                                         <C>                 <C>
Segment assets:
   Office                                                                    $1,254,182         $1,225,270
   Industrial                                                                   154,768            149,158
   Corporate/operating partnership                                               57,365             69,747
                                                                             --------------------------------
Total consolidated assets                                                    $1,466,315         $1,444,175
                                                                             ================================
</TABLE>

<TABLE>
<CAPTION>

                                                                                       Three months
                                                                                      ended March 31,
                                                                                 2000                1999
                                                                             --------------------------------
<S>                                                                          <C>                <C>
Expenditures for real estate:
   Office                                                                    $   16,898         $  145,434
   Industrial                                                                    10,020              6,959
   Corporate/operating partnership (includes property under
     development)                                                                 5,125              4,931
                                                                             ================================
Total expenditures for real estate                                           $   32,043         $  157,324
                                                                             ================================
</TABLE>


8.   PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF INCOME

The accompanying unaudited Pro Forma Condensed Consolidated Statements of
Income of the Company are presented as if, at January 1, 1999, the Operating
Partnership acquired various office and industrial properties (eight
properties acquired in 1999 and two properties acquired in the first quarter
of 2000) with cash and debt proceeds, and sold 11 properties and a 50%
interest in a property in 1999. The unaudited Pro Forma Condensed
Consolidated Statements of Income should be read in conjunction with the
historical financial statements contained in the Company's Form 10-K. In
management's opinion, all adjustments necessary to reflect the effects of the
transactions described above have been made.

The unaudited Pro Forma Condensed Consolidated Statements of Income of the
Company are not necessarily indicative of what the actual results of operations
would have been assuming the transactions described above had occurred at the
dates indicated above, nor do they purport to present the future results of
operations of the Company.

<PAGE>

<TABLE>
<CAPTION>

                                                                         Three months ended
                                                                               March 31,
                                                                       2000              1999
                                                                     --------------------------
<S>                                                                   <C>               <C>
Total revenue (in thousands)                                          $55,424           $54,640
                                                                      =========================

Net income available to common shareholders (in thousands)
                                                                      $ 2,808           $ 3,706
                                                                      =========================

Earnings per diluted common share                                     $  0.18           $  0.24
                                                                      =========================
</TABLE>

                                     - 10 -
<PAGE>

9.   SUBSEQUENT EVENTS

During the period from April 1, 2000 through May 11, 2000, the Company acquired
or sold the following office and industrial properties:

<TABLE>
<CAPTION>

                                                        NET          ACQUISITION
                                                     RENTABLE        COST/SALES     MORTGAGE      MONTH
                                                      SQUARE          PRICE (IN     DEBT (IN     ACQUIRED/
            PROPERTY                  LOCATION         FEET           MILLIONS)     MILLIONS)      SOLD
- -----------------------------------------------------------------------------------------------------------
<S>                             <C>                  <C>             <C>            <C>          <C>
ACQUIRED
Industrial:
   555 Kirk Road                St. Charles, IL             62,400        $ 2.5     $      (1)    April
   1543 Abbott Drive            Wheeling, IL                43,930          1.5            (1)    April
   7100 Madison                 Willowbrook, IL             51,160          5.4         3.9       April
                                                           ---------------------------------
                                                           157,490        $ 9.4     $   3.9
                                                           =================================

SOLD (2)
Office:
   201 4th Avenue North         Nashville, TN              250,566        $ 8.6     $ 4.8        April
   625 Gay Street               Knoxville, TN               91,426          6.1       9.0        April
   4823 Old Kingston Pike       Knoxville, TN               34,638          3.5       3.5        April
   398 Unit Parking facility    Knoxville, TN                    -          2.0         -        April
                                                           ---------------------------------
                                                           376,630        $20.2     $17.3
                                                           =================================
</TABLE>
(1) Both properties secure a mortgage debt in the amount of $2.35 million.

(2) These properties were sold in a single transaction with a total sales price
    of $20.2 million, resulting in a loss of approximately $2.3 million.

In May 2000, the Company entered into a loan extension agreement on a $24.0
million loan collateralized by the property located at 300 West Monroe
Street, Chicago, Illinois, extending the maturity date to August 1, 2000.

Effective April 30, 2000, the terms of the Company's credit facilities were
modified. The maximum loan availability was reduced to $16.7 million for one
of the facilities and its maturity date was modified to the earlier of August
31, 2000 or the date of sale of the related collateral. The second facility's
maturity was also modified to August 1, 2000.

                                     - 11 -
<PAGE>

ITEM 2: MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

OVERVIEW

We are a fully-integrated real estate company providing property management,
leasing, marketing, acquisition, development, redevelopment, construction,
finance and other related services. We intend to qualify as a REIT for federal
income tax purposes. Through the Operating Partnership, we own 29 office
properties containing an aggregate of approximately 8.1 million net rentable
square feet and 41 industrial properties containing an aggregate of
approximately 5.3 million net rentable square feet. In addition, we own a 50%
common interest in a joint venture which owns an office property containing
944,556 net rentable square feet and mortgage on an office property containing
769,384 net rentable square feet. The above properties are located primarily in
the Chicago metropolitan area. At May 11, 2000, we also own approximately 230.5
acres of developable land and rights to acquire more than 165.4 additional acres
of developable land which management believes could be developed with
approximately 4.3 million rentable square feet of additional office space and
6.3 million square feet of additional industrial space.

In terms of net rentable square feet, approximately 85% of our office properties
and 86% of our 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
88.1% of our total rental and tenant reimbursement revenue for the three months
ended March 31, 2000. Our remaining office properties are located in Cleveland,
Ohio; Knoxville, Tennessee; and the Milwaukee, Wisconsin metropolitan areas, and
our remaining industrial properties are located in the Columbus, Ohio
metropolitan area. We intend to continue to invest in the acquisition,
development and redevelopment of office and industrial properties primarily
located in the Chicago metropolitan area.

We intend to access multiple sources of capital to fund future acquisition
and development activities. These capital sources may include undistributed
cash flow, borrowings under credit facilities, proceeds from the issuance of
long-term, tax-exempt bonds, joint venture arrangements, property sales 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
our financial performance; the risk that we may be unable to finance our planned
acquisition and development activities; risks related to the industrial and
office industry in which our 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 our 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 a 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 our properties.

                                     - 12 -
<PAGE>

RESULTS OF OPERATIONS: COMPARISON OF THE THREE MONTHS ENDED MARCH 31, 2000 TO
THE THREE MONTHS ENDED MARCH 31, 1999

In analyzing the operating results for the quarter ended March 31, 2000, the
changes in rental and tenant reimbursements income, property operating
expenses, real estate taxes and depreciation and amortization from 1999 are
due principally to the addition of a full three months of operating results
for three properties acquired in the first quarter of 1999, five properties
acquired in 1999 after the first quarter, two properties placed in service
after the first quarter of 1999, eleven properties sold in 1999 after the first
quarter, the sale of a 50% interest in one property in the third quarter of
1999 and the additions of a partial quarter's worth of operating results for
the two properties acquired during the first quarter of 2000.

For the three months ended March 31, 2000, rental revenue increased $1.2
million, or 3.8%, to $33.9 million, tenant reimbursement income increased
$3.6 million, or 27.7%, to $16.5 million, other income increased $0.5 million
or 20.1%, to $3.1 million, property operating expenses increased $2.2 million
or 20.3% to $12.8 million, real estate tax expense increased to $1.0 million
or 10.8% to $10.4 million and depreciation and amortization increased $1.3
million, or 16.0%, to $9.2 million as compared to the three months ended
March 31, 1999. The additional office properties resulted in increased rental
revenue of $2.2 million, tenant reimbursements income of $1.1 million, other
income of $0.1 million, property operating expenses of $0.7 million, real
estate tax expense of $0.9 million, and depreciation and amortization of $0.6
million for the three months ended March 31, 2000. Rental revenue and tenant
reimbursement income for properties held in both periods increased $2.8
million and $2.0 million, respectively, and other income decreased $0.1
million for the three months ended March 31, 2000 primarily due to two
properties acquired during the three months ended March 31, 1999 being owned
during the entire three months ending March 31, 2000 and increased occupancy
and rental rates at the other properties. Corresponding property operating
expenses increased $1.7 million, real estate tax expense increased $0.7
million and depreciation and amortization increased $1.3 million for the
three months ended March 31, 2000 primarily due to the two properties
acquired during the three months ended March 31, 1999 being owned during the
entire three months ending March 31, 2000.

Interest expense increased $2.6 million, or 25.1%, to $13.0 million during the
three months ended March 31, 2000. The increase was due to new mortgages
obtained on certain of the properties which were acquired in 2000 and 1999.

General and administrative expense increased $0.2 million, or 10.4%, to
$2.3 million during the three months ended March 31, 2000, representing the
expenses associated with the growth of the Company.

Gain on sales of real estate increased $1.2 million during the three months
ended March 31, 2000, due to the sale of certain properties as described in
"Recent Developments".

Income allocated to minority interests increased $0.4 million, or 17.7% to $2.4
million for the three months ended March 31, 2000 due to an increase in income
before minority interest of $0.9 million, or 11.4%, to $9.0 million. The
increase in income before minority interests is due to the additional properties
acquired and the effects they had on revenue and expenses described above.

Net income increased $0.6 million, or 9.3% to $6.6 million for the three months
ended March 31, 2000 due to the changes in revenue, expenses and minority
interests described above associated with acquisitions and new leasing and
releasing of tenant space.

HISTORICAL CASH FLOWS

We had net cash provided by operating activities of $8.3 million and $21.4
million for the three months ended March 31, 2000 and 1999, respectively. The
$13.1 million decrease is primarily due to a $0.6 million increase in net
income, a $1.3 million increase in depreciation and amortization expense, a $1.2
million increase in gain on sales of real estate, a $0.4 million increase in

                                     - 13 -
<PAGE>

income allocated to minority interest, a $0.6 million increase in net equity in
loss of unconsolidated investments, a $5.4 million decrease in tenant
receivables, and a $3.4 million increase in accounts payable and accrued
expenses, offset by a $0.7 million increase in interest income and development
fees added to the mortgage note receivable principal, a $0.6 million decrease in
loss on treasury lock termination, a $0.6 million decrease in loss on land
development option, a $1.7 million increase in deferred rent receivable, $3.6
million increase in other assets, a $0.5 million decrease in accrued interest,
and a $18.1 million decrease in accrued real estate taxes, and a $0.2 million
decrease in other liabilities.

We had net cash used in investing activities of $30.7 million and $151.3 million
for the three months ended March 31, 2000 and 1999, respectively. The $120.6
million decrease in net cash used in investing activities from the period ended
March 31, 1999 through the period ended March 31, 2000 was primarily due to a
$125.3 million decrease in expenditures for real estate and equipment,
principally related to property acquisitions, a $18.0 million decrease in option
deposits, and a $0.2 million decrease in leasing costs, offset by a $24.8
million decrease in restricted escrow deposits, a $3.7 million net increase in
loans to the services company, and a $2.7 million increase in advances on the
mortgage note receivable.

We had net cash provided by financing activities of $18.3 million and $96.0
million for the three months ended March 31, 2000 and 1999, respectively. The
$77.7 million decrease in net cash provided by financing activities from the
period ended March 31, 1999 through the period ended March 31, 2000 was due to,
a $0.2 million increase in financing costs, a $9.2 million decrease in deposits
recovered on treasury lock agreements, a $9.9 million increase in the repayment
of mortgage notes payable, offset by a $29.2 million decrease in proceeds from
mortgage notes payable, $29.1 million decrease in net proceeds from the credit
facilities, and a $0.2 million increase in distributions to preferred
shareholders, common shareholders and minority interests.

LIQUIDITY AND CAPITAL RESOURCES

     LIQUIDITY. Net cash provided from operations represents the primary source
of liquidity to fund distributions, debt service and recurring capital costs. In
order to qualify as a REIT for federal income tax purposes, we must distribute
95% of our REIT's taxable income (excluding capital gains) annually.
Accordingly, we currently intend to continue to make, but are not contractually
bound to make, regular quarterly distributions to holders of our common
shares/units and our preferred shares. We have established annual distribution
rates as follows: $1.35 per annum per common share/unit, 7.5% per annum ($1.50
per share) for each Series A Preferred Shares and 9% per annum ($2.25 per share)
for each Series B Preferred Share.

     CREDIT FACILITIES. Our credit facilities, with a maximum loan availability
totaling $46.0 million, have been provided by various financial institutions,
and are collateralized by first mortgages on certain properties owned by the
operating partnership. Subject to our compliance with the applicable loan
covenants, the credit facilities may be used to provide funds for acquisitions
and development activities and to provide the replacement letters-of-credit for
the $26.9 million of tax-exempt bonds. At March 31, 2000, $19.0 million was
drawn on credit facilities and an additional $26.9 million was used to provide
letters of credit for the tax-exempt bonds.

     PROPERTY SALES. During the period from January 1, 2000 through May 11,
2000 we sold various office, and industrial properties and vacant land
parcels and used a portion of the net proceeds to acquire other office and
industrial properties and land parcels, retire debt, and fund development
activities. We may use the remaining proceeds and the sale of other
properties to fund future acquisitions and development activities.

                                     - 14 -
<PAGE>

     INDEBTEDNESS. We have financed a portion of our acquisitions with proceeds
from mortgage notes payable from various financial institutions, with fixed and
variable interest rates and maturities from 2000 through 2013. We believe that
certain of our properties have excess value that may be utilized for additional
mortgage borrowing or debt securitizations.

Under the provisions of one of the Credit Facilities, we are obligated to
maintain interest rate contracts on a portion of our variable rate indebtedness.
Our variable rate debt includes $160.0 million subject to an interest rate swap
agreement which effectively results in a fixed rate of 8.0%, $70.0 million
subject to an interest rate cap at the LIBOR index rate at 8.0%, and $65.0
million subject to an interest rate collar agreement, which effectively results
in a cap at 9.65% and a floor at 5.88%. Inflation, and its impact on floating
interest rates, could affect the amount of interest payments due on such
indebtedness.

                                     - 15 -
<PAGE>

We obtained the following new indebtedness during the three months ended March
31, 2000:

<TABLE>
<CAPTION>

                                                          Original
                                                          Principal
                                                           Balance                                    Maturity
          Collateral (1)                                 (In Millions)       Interest Rate              Date
- --------------------------------------------------------------------------------------------------------------------
<S>                                                        <C>                    <C>                   <C>
IBM Plaza                                                  $30.0                  (2)                   2/02
Enterprise Center II (3)                                     5.5             LIBOR + 2.75%              3/01
6700 Touhy Avenue (4)                                        3.0             LIBOR + 2.25%              3/05
</TABLE>

(1)  All of the loans are subject to various financial and other operating
     covenants and are collateralized by mortgages on the properties, unless
     otherwise indicated.
(2)  Interest is payable monthly at LIBOR + 4.25%, not to exceed 11%. Beginning
     September 2001, monthly principal payments of $150,000 are also payable. At
     maturity, a payment is required which will ensure that the lender achieves
     an 11.75% return.
(3)  Interest payable monthly, with principal due at maturity.

(4)  Principal and interest payable monthly through maturity.

     FUTURE OFFERINGS. On January 8, 1999, we filed our initial shelf
registration statement on Form S-3 with the Securities and Exchange Commission
to register up to $500.0 million of our equity and debt securities for future
sale.

     CAPITAL IMPROVEMENTS. Our properties require periodic investments of
capital for tenant-related capital improvements. During 1999, our tenant
improvements and leasing commissions averaged $24.54 per square foot of newly
leased office space, $8.19 per square foot of renewal leased office space, and
$2.12 per square foot of newly leased industrial space. Our estimated annual
cost of recurring tenant improvements and leasing commissions is approximately
$7.4 million based upon average annual square feet for leases expiring during
the year ending December 31, 2000. Our cost of general capital improvements to
our properties averages approximately $3.5 million annually based upon an
estimate of $0.19 per square foot.

     LIQUIDITY REQUIREMENTS. We expect to meet our long-term liquidity
requirements for the funding of property development, property acquisitions and
other nonrecurring capital improvements through a combination of net cash from
operations, long-term secured and unsecured indebtedness (including the credit
facilities), joint ventures, property sales and the issuance of additional
equity securities. The terms of the credit facilities and our preferred shares
impose restrictions on our ability to incur indebtedness and issue additional
preferred shares.

FUNDS FROM OPERATIONS

Industry analysts generally consider Funds from Operations, as defined by the
National Association of Real Estate Investment Trusts ("NAREIT"), an alternative
measure of performance of an equity REIT. In October 1999, NAREIT issued a new
white paper statement and redefined how funds from operations is calculated,
effective January 1, 2000. Funds from Operations is now defined by NAREIT as net
income (loss) determined in accordance with GAAP, excluding gains (or losses)
from sales of depreciable operating 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. Non-recurring items, other than those considered "extraordinary"
under GAAP, are no longer adjustments to funds from operations. We believe 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 our Funds from Operations for the three months
ended March 31, 2000 and 1999:

                                     - 16 -
<PAGE>

<TABLE>
<CAPTION>

                                                                                  Three Months
                                                                                  Ended March 31
                                                                          --------------------------
(IN THOUSANDS)                                                               2000              1999
                                                                          --------------------------

<S>                                                                       <C>                <C>
Net income allocated to common shareholders                               $ 3,533            $ 3,012
Adjustments to reconcile to Funds from Operations:
   Real estate depreciation and amortization                                8,206              7,333
   Straight-line rental revenue                                            (2,254)              (594)
   Straight-line rental revenue from joint venture                           (158)                 -
   Amortization of costs for leases assumed                                   162                245
   Joint venture adjustments                                                  863                  -
   Adjustment for sale of operating property                                  130                  -
   Minority interests                                                       2,420              2,056
                                                                          --------------------------
Funds from operations excluding straight-line rental revenue               12,902             12,052
Straight-line rental revenue                                                2,254                594
Straight-line rental revenue from joint venture                               158                  -
                                                                          --------------------------
Funds from Operations (1)                                                 $15,314            $12,646
                                                                          ==========================
</TABLE>

(1)    We compute Funds from Operations in accordance with standards established
       by the Board of Governors of NAREIT in its October 1999 White Paper. In
       addition to this presentation, we also present funds from operations
       excluding straight-line rental revenue (e.g., rental revenues based on
       contractual lease terms), which we believe results in a more accurate
       presentation of the Company's actual operating activities. 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 our performance or to cash flows as a measure
       of liquidity or the ability to pay dividends or make distributions.

       We have restated funds from operations for the three months ended March
       31, 1999 to be in accordance with the new October, 1999 white paper
       standard. We have excluded the following 1999 adjustments: (i) loss on
       treasury lock of $557 and (ii) loss on land development option of $600.

INFLATION

Substantially all of our office and industrial leases require tenants to pay, as
additional rent, a portion of any increases in real estate taxes and operating
expenses over a base amount. In addition, many of the office and industrial
leases provide for fixed increases in base rent or indexed escalations (based on
the Consumer Price Index or other measures). We believe that inflationary
increases in expenses will be offset, in part, by the expense reimbursements and
contractual rent increases described above.

Certain of our debt is subject to interest at floating rates. This floating
rate debt includes (i) $160.0 million subject to an interest rate swap
agreement, which effectively results in a fixed rate of 8.0%, (ii) $70.0
million subject to an interest rate cap of the LIBOR index rate at 8.0%, and
(iii) $65.0 million subject to an interest rate collar agreement, which
effectively results in a cap at 9.65% and a floor at 5.88%. Future
indebtedness may also be subject to floating rate interest. As of March 31,
2000, approximately $472.1 million of our outstanding indebtedness (including
our Credit Facilities), which includes the $160.0 million described above
which is effectively fixed at 8.0%, was subject to interest at floating
rates. Inflation, and its impact on floating interest rates, could affect the
amount of interest payments due on such indebtedness.


                                     - 17 -
<PAGE>

ITEM 3:  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The following table provides information about our derivative financial
instruments and other financial instruments that are sensitive to changes in
interest rates. For our mortgage note receivable, mortgage notes payable, credit
facilities and bonds payable, the table presents principal cash flows, including
principal amortization, and related weighted-average interest rates by expected
maturity dates as of March 31, 2000. For the interest rate protection agreement,
the table presents the notional amount entered into and the lock rate.

                            Interest Rate Sensitivity
                Principal (Notional) amount by Expected Maturity
                              Average Interest Rate

<TABLE>
<CAPTION>

                                       2000      2001       2002      2003        2004      Thereafter    Total
                                    --------------------------------------------------------------------------------
                                                                 (DOLLARS IN MILLIONS)
<S>                                 <C>          <C>        <C>       <C>         <C>       <C>           <C>
Assets:
   Mortgage notes receivable
     (1)                                    -         -          -         -      $87.3     $      -      $ 87.3
   Fixed interest rate                      -         -          -         -        9.64%          -

Liabilities:
   Mortgage notes payable (2):
       Fixed rate                       $17.5     $63.0      $ 33.3     $ 4.1      $ 4.4       $235.8     $358.1
       Average interest rate              9.91%     6.83%      11.24%     7.32%      7.32%        7.38%

       Variable rate                    $39.6     $76.3      $246.1     $ 0.2      $14.2       $  2.3     $378.7
       Average interest rate (3)          8.64%     7.61%       7.89%     8.38%      9.49%        8.38%

   Credit facilities (2):
     Variable rate amount               $19.0         -          -         -          -            -      $ 19.0
     Weighted-average interest rate
       (3)                                8.20%       -          -         -          -            -

   Bonds payable (2):
     Variable rate                          -         -      $ 48.2        -          -        $ 26.3     $ 74.5
     Average interest rate (3)              -         -         3.86%      -          -           4.05%

   Interest rate swap agreement (2)(3):
       Notional amount                  $ 1.6     $ 3.2      $155.2        -          -            -      $160.0
       Pay rate                           5.97%     5.97%       5.97%      -          -            -
       Fixed swap rate                    6.30%     6.30%       6.30%      -          -            -           -

   Interest rate collar agreement (2)(3):
       Notional amount                     -         -       $ 65.0        -          -            -      $ 65.0
       Pay rate                            -         -          6.04%      -          -            -
       Cap rate                            -         -          7.50%      -          -            -
       Floor rate                          -         -          3.73%      -          -            -

   Interest rate cap agreement (3):
       Notional amount                  $70.0       -           -         -          -            -       $70.0
       Cap rate                           8.00%      -           -         -          -            -

</TABLE>
- --------------------
(1)      See Note 2 to our consolidated financial statements in our Form 10-K
         for the year ended December 31, 1999 for additional information.

(2)      See Note 4 to our consolidated financial statements in our Form 10-K
         for the year ended December 31, 1999 for additional information.

(3)      Based upon the rates in effect at March 31, 2000. The weighted-average
         interest rate, including the interest rate swap and collar agreements,
         on our mortgage notes payable, credit facilities, and bonds payable at
         March 31, 2000 were 7.99%, 8.20%, and 3.93%, respectively. If interest
         rates on our variable rate debt increased by one percentage point, our
         annual interest expense would increase by approximately $3.1 million.

                                     - 18 -
<PAGE>

PART II:  OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS.

                  Neither we nor any of our properties are presently subject to
                  any material litigation nor, to the our knowledge, is any
                  material litigation threatened against us, other than routine
                  litigation arising in the ordinary course of business, some of
                  which is expected to be covered by liability insurance and all
                  of which collectively is not expected to have a material
                  adverse effect on our consolidated financial statements.

ITEM 2.  CHANGES IN SECURITIES.

                  None

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES.

                  None

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

                  None

ITEM 5.  OTHER INFORMATION.

                  None

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K.

(a)               Exhibits:

EXHIBIT
NUMBER   DESCRIPTION

3.1  Amendment No. 33 to the Amended and Restated Agreement of Limited
     Partnership of Prime Group Realty, L.P. dated as of January 17, 2000.

3.2  Amendment No. 34 to the Amended and Restated Agreement of Limited
     Partnership of Prime Group Realty, L.P. dated as of February 15, 2000.

3.3. Amendment No. 35 to the Amended and Restated Agreement of Limited
     Partnership of Prime Group Realty, L.P. dated as of March 15, 2000.

3.4  Amendment No. 36 to the Amended and Restated Agreement of Limited
     Partnership of Prime Group Realty, L.P. dated as of March 15, 2000.

3.5  Amendment No. 37 to the Amended and Restated Agreement of Limited
     Partnership of Prime Group Realty, L.P. dated as of March 24, 2000.

10.1 Eighth Amendment to Credit Agreement, dated March 31, 2000, among Prime
     Group Realty, L.P., Prime Group Realty Trust, Fleet National Bank (f/k/a
     BankBoston, N.A.), and CIBC Inc.

12.1 Computation of ratios of earnings to combined fixed charges and preferred
     share distributions.

27.1 Financial Data Schedule

(b)  Reports on Form 8-K:

None

                                     - 19 -
<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:         May 15, 2000            /s/  Richard S. Curto



                                      -----------------
                                      Richard S. Curto
                                      President and Chief Executive
                                      Officer


Date:         May 15, 2000            /s/  William M. Karnes



                                      -----------------
                                      William M. Karnes
                                      Executive Vice President and
                                      Chief Financial Officer


                                     - 20 -


<PAGE>

                    AMENDMENT NO. 33 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 33 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of January
17, 2000 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 January 17, 2000;

         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 January 17, 2000; and


<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
twenty-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
6922.0 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. 60 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, 2000 (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.


                                     -2-


<PAGE>


         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]



                                     -3-


<PAGE>


                         AMENDMENT NO. 33 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] James F. Hoffman
                                       --------------------------

                                    Name: James F. Hoffman
                                         ------------------------

                                    Title: Senior 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] James F. Hoffman
                                                   --------------------------

                                                Name: James F. Hoffman
                                                     ------------------------

                                                Title: Senior Vice President
                                                      -----------------------


                                     -4-

<PAGE>

                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Managing General Partner                                         Common Units                   Contribution
- ------------------------                                         ------------                   ------------
<S>                                                              <C>                            <C>
Prime Group Realty Trust                                          15,244,537                         **
         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
- ----------------

The Nardi Group, L.L.C.                                              328,182                     $ 4,906,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Carol Stream Industrial Park Joint Venture                           151,621                     $ 2,146,374
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Edward S. Hadesman                                                   398,427                     $ 7,578,540
Trust Dated May 22, 1992
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614
</TABLE>

________________________________

*   As amended by Amendment No. 33 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.


                               EXHIBIT A-1

<PAGE>


<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   -------------
<S>                                                              <C>                            <C>
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

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                                                    36,006                      $   720,120
         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
</TABLE>


                               EXHIBIT A-2

<PAGE>

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   -------------
<S>                                                              <C>                             <C>
Primestone Investment Partners, L.P.                               7,944,893                        **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Paul A. Roehri

Prime Group VI, L.P.                                                 304,097                     $ 6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                                          100,771                     $ 1,500,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL  60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                                       2,608                       $    52,160
         714 Blaine Court
         Schaumburg, IL 60173

Sandra F. Grinvalds                                                    2,608                      $    52,160
         714 Blaine Court
         Schaumburg, IL 60173

Warren H. John, as Trustee of the Warren H. John                      37,259                      $   745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL  60614
</TABLE>


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


                              EXHIBIT A-3


<PAGE>


<TABLE>
<CAPTION>

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

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

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

                               EXHIBIT A-4


<PAGE>


                    AMENDMENT NO. 34 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 34 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of
February 15, 2000 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 February 15, 2000;

         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 February 15, 2000; and


<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
twenty-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
7348.0 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. 61 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, 2000 (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.

                                       2
<PAGE>


         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.

                                       3

<PAGE>


                                    AMENDMENT NO. 34 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] James F. Hoffman
                                       ---------------------

                                    Name: James F. Hoffman
                                         -----------------

                                    Title: Senior 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] James F. Hoffman
                                                   ---------------------

                                                Name: James F. Hoffman
                                                     -----------------

                                                Title: Senior Vice President
                                                      ----------------------

                                       4

<PAGE>


                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS
<TABLE>
<CAPTION>
                                                                   Number of                      Capital
Managing General Partner                                         Common Units                   Contribution
- ------------------------                                         ------------                   ------------
<S>                                                               <C>                           <C>
Prime Group Realty Trust                                          15,264,835                      **
         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

The Nardi Group, L.L.C.                                             328,182                      $4,906,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Carol Stream Industrial Park Joint Venture                          151,621                      $2,146,374
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Edward S. Hadesman
Trust Dated May 22, 1992                                            398,427                      $7,968,540
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614
</TABLE>


_______________________

*   As amended by Amendment No. 34 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.

                                   EXHIBIT A-1
<PAGE>
<TABLE>
<CAPTION>

                                                                   Number of               Capital
Limited Partners                                                 Common Units           Contribution
- ----------------                                                 ------------           ------------
<S>                                                               <C>                   <C>
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

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                                                   36,006                 $720,120
         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
</TABLE>


                                   EXHIBIT A-2


<PAGE>
<TABLE>
<CAPTION>

                                                                   Number of            Capital
Limited Partners                                                 Common Units         Contribution
- ----------------                                                 ------------         ------------
<S>                                                               <C>                 <C>
Primestone Investment Partners, L.P.                               7,944,893                **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Paul A. Roehri

Prime Group VI, L.P.                                                 304,097             $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                                           87,821             $1,300,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL  60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                                       2,608                $52,160
         714 Blaine Court
         Schaumburg, IL 60173

Sandra F. Grinvalds                                                    2,608                $52,160
         714 Blaine Court
         Schaumburg, IL 60173

Warren H. John, as Trustee of the Warren H. John                      37,259               $745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL  60614
</TABLE>


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

                                   EXHIBIT A-3
<PAGE>
<TABLE>
<CAPTION>
                                                              Number of                       Capital
Managing General Partner                                   Preferred Units                 Contribution
- ------------------------                                   ---------------                 ------------
<S>                                                    <C>                                 <C>
Prime Group Realty Trust                               2,000,000                                   **
         77 West Wacker Drive                          Convertible Preferred Units
         Suite 3900
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman

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

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

                                   EXHIBIT A-4




<PAGE>

                    AMENDMENT NO. 35 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 35 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of March
15, 2000, 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) and The Nardi Group, L.L.C., a Delaware
limited liability company (the "Nardi Company"). 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, in connection with PGRT's November 1997 initial public
offering, the Nardi Company contributed certain properties to the Partnership
(the "Nardi Contribution") in exchange for 927,100 Common Units of General
Partner Interest in the Partnership (the "Nardi GP Common Units");

         WHEREAS, concurrently with the Nardi Contribution, PGRT and the
Partnership granted to the Nardi Company two options to put portions of the
Nardi GP Common Units to PGRT and the Partnership on the terms and subject to
the conditions set forth in that certain Put Option Agreement, dated as of
November 17, 1997, by and among the Nardi Company, PGRT and the Partnership (the
"Put Option Agreement");

         WHEREAS, also concurrently with the Nardi Contribution, the Partnership
entered into a Tax Indemnification Agreement, dated as of November 17, 1997 (the
"Tax Indemnification Agreement"), with affiliates of the Nardi Company
consisting of Stephen J. Nardi, an individual, Narco Enterprises, Inc., an
Illinois corporation and Nardi Group Limited, a Delaware corporation
(collectively, the "Nardi Indemnitees"), pursuant to which the Partnership
agreed to indemnify the Nardi Indemnitees against certain tax liabilities on the
terms and subject to the conditions set forth in the Tax Indemnification
Agreement;



<PAGE>



         WHEREAS, the Nardi Company desires that the Nardi GP Common Units be
converted (the "Conversion") into Common Units of Limited Partner Interest in
the Partnership ("LP Common Units") and to withdraw from its capacity as a
General Partner of the Partnership concurrently with the Conversion;

     WHEREAS, PGRT and the Partnership desire to convert the Nardi GP Common
Units into LP Common Units as described above;

         WHEREAS, the Nardi Company was admitted to the Partnership as an
Additional Limited Partner as of April 22, 1999 pursuant to Amendment No. 22 to
the Limited Partnership Agreement;

         WHEREAS, in connection with the Conversion, the parties desire to
concurrently terminate the Put Option Agreement and to modify the Tax
Indemnification Agreement;

         WHEREAS, pursuant to Section 11.2.A. of the Limited Partnership
Agreement, the withdrawal of the Nardi Company from its capacity as a General
Partner of the Partnership requires the Consent of the Partners and the consent
of the Managing General Partner;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to reflect (i) the increase in outstanding Common Units of Limited Partner
Interest and the related decrease in outstanding Common Units of General Partner
Interest resulting from the Conversion and (ii) the withdrawal of the Nardi
Company from its capacity as a General Partner of the Partnership; and

         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. CONVERSION OF THE NARDI GP COMMON UNITS; PGRT SHAREHOLDER
APPROVAL. (a) Upon the effectiveness of this Amendment, the 927,100 Nardi GP
Common Units are hereby converted into an aggregate of 927,100 LP Common Units
(the "New LP Common Units").

                  (b) Each of the New LP Common Units 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 the date that is six months after the
date of this Amendment (as opposed to November 17, 1998) and (ii) such New LP
Common Units will be subject to the Registration Rights Agreement

                                 - 2 -


<PAGE>


dated as of December 15, 1997 by and among PGRT, the Partnership and H Group
LLC (as opposed to the Registration Rights Agreement entered into by PGRT and
the Partnership on November 17, 1997).

         Section 2. WITHDRAWAL OF THE NARDI COMPANY AS A GENERAL PARTNER. PGRT,
as Managing General Partner, hereby consents to the withdrawal of the Nardi
Company from its capacity as a General Partner of the Partnership, effective
upon the effectiveness of this Amendment. Upon the effectiveness of this
Amendment, the Nardi Company hereby withdraws from its capacity as a General
Partner of the Partnership.

         Section 3. ACCEPTANCE OF TERMS AND CONDITIONS OF THE LIMITED
PARTNERSHIP AGREEMENT APPLICABLE TO LIMITED PARTNERS. The Nardi Company hereby
acknowledges and agrees that, as a Limited Partner of the Partnership, the Nardi
Company continues to be bound by all of the terms and conditions of the Limited
Partnership Agreement applicable to Limited Partners, including without
limitation, the provisions of Section 2.4 of the Limited Partnership Agreement.

         Section 4. REPRESENTATIONS AND WARRANTIES OF THE NARDI COMPANY. The
Nardi Company hereby acknowledges, represents and warrants to PGRT and the other
Partners that each of the representations and warranties set forth in Section
3.3.D. of the Limited Partnership Agreement are true and correct with respect to
the Nardi Company as of the date hereof.

         Section 5. AMENDMENT OF EXHIBIT A TO THE LIMITED PARTNERSHIP AGREEMENT.
Upon the effectiveness of this Amendment, 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 6. CONDITIONS TO EFFECTIVENESS. This Amendment shall become
effective contemporaneously with, and subject to:

         (i)               the receipt by the Managing General Partner of the
                           Consent of the Partners to the withdrawal of the
                           Nardi Company from its capacity as a General Partner
                           of the Partnership, in the form of a written consent
                           pursuant to Section 14.1 of the Limited Partnership
                           Agreement;

         (ii)              the execution and delivery by the Partnership to the
                           Nardi Company of a Common Unit Certificate
                           representing 927,100 LP Common Units;


                                 - 3 -


<PAGE>



        (iii)              the surrender and delivery by the Nardi Company to
                           the Partnership of the Common Unit Certificate
                           representing the 927,100 GP Common Units (Cert. No.
                           17) issued by the Partnership to the Nardi Company on
                           November 17, 1997;

         (iv)              the execution and delivery by the Nardi Company of
                           the Put Option Termination Agreement substantially in
                           the form of EXHIBIT B attached hereto;

         (v)               the execution and delivery by the Nardi Company of
                           the First Amendment to the Tax Indemnification
                           Agreement substantially in the form of EXHIBIT C
                           attached hereto; and

         (vi)              the approval by PGRT's common shareholders of the
                           issuance by PGRT of up to 927,100 (subject to any
                           applicable anti-dilution adjustments) of its common
                           shares of beneficial interest upon exchange of the
                           New LP Common Units.

         Section 7. 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 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 8. COUNTERPARTS. This Amendment may be executed in
counterparts, all of which together shall constitute one agreement binding on
all the parties hereto, notwithstanding that all such parties are not
signatories to the original or the same counterpart. Each party shall become
bound by this Amendment immediately upon affixing its signatures hereto.

         Section 9. 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]


                                 - 4 -


<PAGE>


                    AMENDMENT NO. 35 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:                   LIMITED PARTNERS:

PRIME GROUP REALTY TRUST, a                 Each Limited Partner hereby
Maryland real estate investment             executes this Amendment to
trust                                       the Limited Partnership
                                            Agreement.




                                            By:   PRIME GROUP REALTY TRUST, a
By: [s] James F. Hoffman                    Maryland real estate investment
   -------------------------                trust , as attorney-in-fact
Name:  James F. Hoffman
Title: Senior Vice President

                                            By: [s] James F. Hoffman
                                               -------------------------------

                                            Name:  James F. Hoffman

                                            Title: Senior Vice President

                                            WITHDRAWING GENERAL PARTNER:

                                            THE NARDI GROUP, L.L.C., a Delaware
                                            limited liability company


                                            By: [s] Stephen J. Nardi
                                               -------------------------------

                                            Name: Stephen J. Nardi
                                                 -----------------------------

                                            Its: Managing Member
                                                 -----------------------------

                                  - 5 -




<PAGE>



                                    EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Managing General Partner                                         Common Units                   Contribution
- ------------------------                                         ------------                   -------------
<S>                                                               <C>                            <C>
Prime Group Realty Trust                                          15,264,835                          **
         77 West Wacker Drive
         Suite 3900
         Chicago, IL  60601
         Attn:  Richard S. Curto
                James F. Hoffman

Limited Partners

The Nardi Group, L.L.C.                                            1,255,282                    $23,448,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Carol Stream Industrial Park Joint Venture                          151,621                      $2,146,374
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Edward S. Hadesman
Trust Dated May 22, 1992                                            398,427                      $7,968,540
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614

</TABLE>


- -------------------
*  As amended by Amendment No. 35 to the Amended and Restated Agreement of
   Limited Partnership of Prime Group Realty, L.P. This Exhibit A reflects the
   ownership of units as of the date of this Amendment No. 35 assuming the
   effectiveness of this Amendment No. 35. The units listed on this Exhibit A
   are subject to revisions as indicated by future Amendments.

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

                                Exhibit A-1


<PAGE>


<TABLE>
<CAPTION>

                                                                   Number of              Capital
Limited Partners                                                 Common Units           Contribution
- ----------------                                                 ------------           ------------
<S>                                                              <C>                     <C>
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

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                                                  36,006               $720,120
         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

</TABLE>

                                Exhibit A-2


<PAGE>


<TABLE>
<CAPTION>

                                                                   Number of               Capital
Limited Partners                                                 Common Units           Contribution
- ----------------                                                 ------------          -------------
<S>                                                              <C>                    <C>
Primestone Investment Partners, L.P.                               7,944,893                  **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Paul A. Roehri

Prime Group VI, L.P.                                                304,097              $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                                         87,821               $1,300,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL  60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                                     2,608               $52,160
         714 Blaine Court
         Schaumburg, IL 60173

Sandra F. Grinvalds                                                  2,608               $52,160
         714 Blaine Court
         Schaumburg, IL 60173

Warren H. John, as Trustee of the Warren H. John                    37,259               $745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL  60614

</TABLE>


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


                                Exhibit A-3



<PAGE>

<TABLE>
<CAPTION>

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

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

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

</TABLE>

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


                                 Exhibit A-4



<PAGE>

                    AMENDMENT NO. 36 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 36 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of March
15, 2000 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 April 17, 2000;

         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 April 17, 2000; and

<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
twenty-ninth 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
7,355 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. 63 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, 2000 (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.

                                - 2 -

<PAGE>

         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]

                                - 3 -

<PAGE>

                                    AMENDMENT NO. 36 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] James F. Hoffman
                                        ---------------------------

                                     Name: James F. Hoffman
                                          -------------------------

                                     Title: Senior 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] James F. Hoffman
                                                 --------------------------

                                              Name: James F. Hoffman
                                                   ------------------------

                                              Title: Senior Vice President
                                                    ------------------------


                                - 4 -

<PAGE>

                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Managing General Partner                                         Common Units                   Contribution
- ------------------------                                         ------------                   ------------
<S>                                                              <C>                            <C>
Prime Group Realty Trust                                          15,264,835                      **
         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
- ----------------

The Nardi Group, L.L.C.                                             328,182                      $4,906,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Carol Stream Industrial Park Joint Venture                          151,621                      $2,146,374
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Edward S. Hadesman
Trust Dated May 22, 1992                                            398,427                      $7,968,540
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614
</TABLE>

___________________
*    As amended by Amendment No. 36 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.

                                EXHIBIT A-1

<PAGE>

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   ------------
<S>                                                              <C>                            <C>
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

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                                                  36,006                      $  720,120
         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
</TABLE>


                                EXHIBIT A-2


<PAGE>

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   -------------
<S>                                                              <C>                            <C>
Primestone Investment Partners, L.P.                               7,944,893                      **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Paul A. Roehri

Prime Group VI, L.P.                                                304,097                     $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                                         95,176                      $1,400,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL  60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                                     2,608                      $   52,160
         714 Blaine Court
         Schaumburg, IL 60173

Sandra F. Grinvalds                                                  2,608                      $   52,160
         714 Blaine Court
         Schaumburg, IL 60173

Warren H. John, as Trustee of the Warren H. John                    37,259                      $  745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL  60614
</TABLE>
___________________________
**   This amount shall be inserted by the Managing General Partner.

                                EXHIBIT A-3

<PAGE>

<TABLE>
<CAPTION>

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

Prime Group Realty Trust                               4,000,000                                   **/
         77 West Wacker Drive                          Series B Preferred Units
         Suite 3900
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman
</TABLE>
____________________________
**   This amount shall be inserted by the Managing General Partner.

                                EXHIBIT A-4


<PAGE>

                    AMENDMENT NO. 37 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.




         This AMENDMENT NO. 37 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of this
24th day of March, 2000, 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 Real Estate Sales Contract, dated as of
October 20, 1997, by and among The Prime Group, Inc., an Illinois corporation,
Prime Group Realty Trust, a Maryland real estate investment trust, Prime Group
Realty, L.P., a Delaware limited partnership and the Contributors named therein
(the "Agreement"), the Partnership agreed to purchase the Vacant Parcels 2, 3, 6
and 9 in Carol Stream Industrial Business Park, Carol Stream, Illinois (the
"Property") upon the fulfillment of certain conditions;

         WHEREAS, the conditions of the Agreement having been fulfilled, the
Partnership is acquiring the Property in return for issuing Common Units of
Limited Partner Interest to Carol Stream Industrial Park Joint Venture, James M.
Kane and Gloria I. Kane; and

         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 from Carol

<PAGE>

Stream Industrial Park Joint Venture the grant of all of its right, title and
interest in the Property, a legal description of which is attached hereto as
EXHIBIT 1, as a Capital Contribution in exchange for 272, 126 Common Units of
Limited Partner Interest which are hereby issued by the Partnership to Carol
Stream Industrial Park Joint Venture, James M. Kane and Gloria I. Kane (each,
a "Seller") pursuant to Section 4.3.C of the Limited Partnership Agreement,
and which are evidenced by Common Unit Certificates Nos. 64, 65 and 66 of the
Partnership.

                  (b) Each of the Common Units of Limited Partner Interest
issued to the Sellers pursuant to this SECTION 2 shall have the same terms and
provisions as the Common Units of Limited Partner Interest issued by the
Partnership on November 17, 1997 except that the Exchange Rights relating
thereto may be exercised only after the first (1st) anniversary of their
issuance (as opposed to November 17, 1998).

                  (c) Each Seller agrees that it has received and reviewed a
copy of the Partnership Agreement;

                  (d) Each Seller agrees that it desires to become an Additional
Limited Partner in the Partnership in accordance with the terms of the
Partnership Agreement;

                  (e) Each Seller, by execution hereof, accepts and agrees that
it is bound by all of the terms and provisions of the Partnership Agreement,
including without limitation the provisions of Section 2.4 and the restrictions
on transfer set forth in Article 11 of the Partnership Agreement;

                  (f) Each Seller assumes all of the obligations of an
Additional Limited Partner pursuant to the Partnership Agreement with respect to
the Common Units issued to such Seller;

                  (g) Each Seller agrees that the Partnership Agreement shall be
binding on and enforceable against such Seller as a Limited Partner in
accordance with its terms;

                  (h) Each Seller acknowledges and agrees to the following
representations and warranties: (i) such Seller is an "accredited investor"
within the meaning of Rule 501(a) promulgated under the Securities Act of 1933,
as amended (the "SECURITIES ACT"); (ii) such Seller understands the risks of,
and other considerations relating to, its acquisition of the Common Units; and
(iii) such Seller, by reason of its business and financial experience, together
with the business and financial experience of those persons, if any, retained by
it to represent or advise it with respect to its investment in the Common Units,
(x) has such knowledge, sophistication and experience in financial and business
matters and in making investment decisions of this type, that it is capable of
evaluating the merits and risks of an investment in Common Units of the
Partnership and of making an informed investment decision, (y) is capable of
protecting its own interests in connection with its acquisition of Common Units
or has engaged representatives or advisors to assist such Seller in protecting
its interests in connection with its acquisition of Common Units and (z) is
capable of bearing the economic risk of such investment in Common Units.

                                  - 2 -

<PAGE>

                  (i) Each Seller acknowledges and agrees to the following
representations and warranties: (i) the Common Units to be issued to such Seller
are acquired by such Seller for its own account for investment only and not with
a view to, or with any intention of, a distribution or resale thereof, in whole
or in part, or the grant of any participation therein until and unless the
Common Units are exchanged for Common Shares of the Trust following the one year
lock-up period applicable to the Common Units, in accordance with the
Partnership Agreement; (ii) such Seller hereby confirms that all documents,
instruments, records and books pertaining to investment in Common Units of the
Partnership and requested by such Seller have been made available or delivered
to the undersigned; (iii) such Seller has had an opportunity to ask questions of
and receive answers from the Partnership, or from a person or persons acting on
the Partnership's behalf, concerning the Partnership, the terms and conditions
of the transaction contemplated by this Acknowledgment and Agreement and such
Seller's acquisition of Common Units; (iv) such Seller has relied upon, and is
making its investment decisions solely upon, such information as has been
provided to the undersigned by the Partnership, and such Seller has not relied
upon any other information, literature or any oral communications; and (v) such
Seller, if an entity, was not formed for the specific purpose of acquiring an
interest in the Partnership.

                  (j) Each Seller acknowledges that (i) the Common Units to be
issued to such Seller have not been registered under the Securities Act or state
securities laws by reason of a specific exemption or exemptions from
registration under the Securities Act and applicable state securities laws; (ii)
the Partnership's reliance on such exemptions is predicated in part on the
accuracy and completeness of the representations and warranties of such Seller;
(iii) such Common Units, therefore, cannot be resold unless registered under the
Securities Act and applicable state securities laws, or unless an exemption from
registration is available; (iv) there is no public market for such Common Units;
and (v) the Partnership has no obligation or intention to register such Common
Units for resale under the Securities Act or any state securities laws or to
take any action that would make available any exemption from the registration
requirements of such laws. Each Seller hereby acknowledges that because of the
restrictions on transfer or assignment of such Common Units to be issued which
are set forth in this Amendment, such Seller may have to bear the economic risk
of the investment commitment evidenced by this Amendment and any Common Units
acquired as contemplated by this Amendment for an indefinite period of time, and
that the Common Units by their terms will not be exchangeable at the request of
the holder thereof for Common Shares of the Company prior to the first (1st)
anniversary of their issuance.

                  (k) Each Seller acknowledges that its address or principal
place of business, as the case may be, is set forth below. Such Seller does not
have any present intention of becoming a resident of any country, state or
jurisdiction other than the country and state in which its address or present
principal place of business, as the case may be, is sited.

         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

                                  - 3 -

<PAGE>

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]

                                  - 4 -

<PAGE>

                                    AMENDMENT NO. 37 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] James F. Hoffman
                                         -----------------------------

                                      Name:  James F. Hoffman
                                           ---------------------------


                                      Title: Senior 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] James F. Hoffman
                                                  -----------------------

                                               Name:  James F. Hoffman
                                                     ---------------------

                                               Title: Senior Vice President
                                                      ---------------------

                               - 5 -

<PAGE>

As to Section 1 hereof,

ACKNOWLEDGED AND AGREED


CAROL STREAM INDUSTRIAL PARK JOINT
VENTURE, an Illinois general partnership

By:      NARCO ENTERPRISES, INC.,
         an Illinois corporation
         Its Managing General Partner


         By:  [s] STEPHEN J. NARDI
              ----------------------
                   Stephen J. Nardi
                   President

                               - 6 -

<PAGE>

                     [s] James M. Kane
                  -----------------------------
                           James M. Kane
                  =============================


                     [s] Gloria I. Kane
                  -----------------------------
                           Gloria I. Kane
                  =============================

                                 - 7 -

<PAGE>
                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Managing General Partner                                         Common Units                   Contribution
- ------------------------                                         ------------                   ------------
<S>                                                              <C>                            <C>
Prime Group Realty Trust                                          15,264,835                      **
         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
- ----------------

The Nardi Group, L.L.C.                                             573,096                      $8,354,750
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Carol Stream Industrial Park Joint Venture                          151,621                      $2,146,374
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Edward S. Hadesman
- ------------------

Trust Dated May 22, 1992                                            398,427                      $7,968,540
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614
</TABLE>
_____________________________
*    As amended by Amendment No. 37 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.

                                 EXHIBIT A-1

<PAGE>

<TABLE>
<CAPTION>

                                                                   Number of                     Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   ------------
<S>                                                              <C>                            <C>
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

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                                                   36,006                     $  720,120
         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
</TABLE>

                                 EXHIBIT A-2

<PAGE>

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   ------------
<S>                                                              <C>                            <C>
Primestone Investment Partners, L.P.                               7,944,893                      **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Paul A. Roehri

Prime Group VI, L.P.                                                304,097                     $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL  60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                                         88,333                      $1,300,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL  60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                                     2,608                      $   52,160
         714 Blaine Court
         Schaumburg, IL 60173

Sandra F. Grinvalds                                                  2,608                      $   52,160
         714 Blaine Court
         Schaumburg, IL 60173

Warren H. John, as Trustee of the Warren H. John                    37,259                      $  745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL  60614
</TABLE>
_________________________________
**   This amount shall be inserted by the Managing General Partner.

                                 EXHIBIT A-3


<PAGE>

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   ------------
<S>                                                              <C>                            <C>
James M. Kane                                                       13,606                      $  191,594
Connemara Farm
61 E. Palatine Road
South Barrington, IL 60010

Gloria I. Kane                                                      13,606                      $  191,594
Connemara Farm
61 E. Palatine Road
South Barrington, IL 60010
</TABLE>

<TABLE>
<CAPTION>

                                                                   Number of                      Capital
Limited Partners                                                 Common Units                   Contribution
- ----------------                                                 ------------                   ------------
<S>                                                       <C>                                   <C>
Prime Group Realty Trust                                  2,000,000                                 **
         77 West Wacker Drive                             Convertible Preferred Units
         Suite 3900
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman

Prime Group Realty Trust                                  4,000,000                                 **/
         77 West Wacker Drive                             Series B Preferred Units
         Suite 3900
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman
</TABLE>
____________________________
**   This amount shall be inserted by the Managing General Partner.


                                 EXHIBIT A-4


<PAGE>

                      EIGHTH AMENDMENT TO CREDIT AGREEMENT

         This Eighth Amendment to Credit Agreement is made as of the 31st day of
March, 2000 by and among PRIME GROUP REALTY, L.P., a Delaware limited
partnership (the "Borrower"), PRIME GROUP REALTY TRUST, a Maryland trust (the
"Company") and FLEET NATIONAL BANK (F/K/A BANKBOSTON, N.A.), a national banking
association ("Fleet"), CIBC INC., a Delaware corporation ("CIBC"), the other
lending institutions which are from time to time listed on Schedule 1,
(collectively, with Fleet and CIBC, the "Lenders") and FLEET NATIONAL BANK
(F/K/A BANKBOSTON, N.A.), as agent for itself and such other lending
institutions (the "Agent").

         WHEREAS, the parties hereto are parties to that certain Credit
Agreement dated as of November 17, 1997 as amended by First Amendment to Credit
Agreement dated as of December 15, 1997 and by Second Amendment to Credit
Agreement dated as of March 16, 1998, as amended and restated by Third Amendment
to Credit Agreement dated as of March 30, 1998 as amended by Fourth Amendment to
Credit Agreement dated as of April 24, 1998, as amended by Fifth Amendment to
Credit Agreement dated as of October 1, 1998, as amended and restated by Sixth
Amendment to Credit Agreement dated as of February 4, 1999 and as amended by
Seventh Amendment to Credit Agreement dated as of October 22, 1999 (the
"Existing Agreement"); and

         WHEREAS, the parties have agreed to amend the Existing Agreement so as
to effect certain changes in the Existing Agreement.

         NOW, THEREFORE, the parties hereby agree that effective upon the
Effective Date hereof (as determined pursuant to Paragraph 8 below) the Existing
Agreement is amended as follows:

         1. DEFINITIONS: Section 1.1 of the Existing Agreement is amended to
provide that the following terms shall have the following meanings and, to the
extent that any of the following terms are already defined in the Existing
Agreement, such definitions shall be deemed to be amended and restated by the
following definitions:

         Bank One Excluded Unconsolidated Entity. As of any date, any Person
which is within the definition of Unconsolidated Entity set forth in this
Agreement but which is not within the definition of Unconsolidated Entity set
forth in the Bank One Guaranties.

         Bank One Guaranties. Those certain documents referred to as Guaranty
(limited amount) and Guaranty (limited recourse) from Borrower to Bank One,
Illinois, NA relating to the obligations of ceratin of Borrower's Subsidiaries
with respect to Letter of Credit Agreements dated February 17, 1998 relating to
letter of credit facilities in the aggregate amount of $48,809,587, such
Guaranties being dated February 17, 1998 as modified on November 30, 1998,
August 31, 1999 and February 21, 2000, and as the same may be further modified
from time to time.

Each place in the Agreement where there is a reference to BankBoston such
reference shall be

<PAGE>

deemed to be replaced with a reference to Fleet so as to reflect the change in
name from BankBoston, N.A. to Fleet National Bank which became effective on
March 1, 2000.

         2. DELETION OF SECTION 7.23. Section 7.23 of the Agreement is hereby
deleted.

         3. ADDITION OF SECTION 9.7. A new Section 9.7 is hereby added to the
Agreement immediately following Section 9.6 as follows:

                  Section 9.7. Total Liabilities to Total Adjusted Assets
         Excluding Bank One Excluded Unconsolidated Entities . The Borrower will
         not at any time permit Total Liabilities at the end of any fiscal
         quarter to exceed sixty-five percent (65%) of Total Adjusted Assets
         with the computations of this covenant to be done in the same manner as
         in Section 9.3 above except that each place where the definitions of
         EBITDA or Total Liabilities require the computations to include items
         related to Unconsolidated Entities, such computations shall be adjusted
         to exclude all items relating to all Bank One Excluded Unconsolidated
         Entities. Each Compliance Certificate delivered hereunder will include
         an additional schedule in substantially the form attached as Exhibit A
         to this Amendment listing the Bank One Excluded Unconsolidated Entities
         as of the date of such Certificate and setting forth in detail the
         adjustments made with respect to the computations required by this
         Section 9.7. It is the intent of the parties in adding this Section 9.7
         to create a new financial covenant which is equally as stringent as the
         financial covenant (the "Bank One Covenant") set forth in paragraph
         9.2(a) of the Bank One Guaranties, as the Bank One Covenant may be
         amended, and in effect, from time to time. For the avoidance of doubt,
         the parties agree that the Borrower shall not be required to obtain the
         consent of the Lenders or the Agent to any amendment of the Bank One
         Covenant which does not make such covenant more stringent than the
         existing Bank One Covenant, and that if the Bank One Covenant ceases to
         be in effect at any time, whether by reason of amendment to the Bank
         One Guaranties, refinancing of the indebtedness to which the Bank One
         Guaranties relates, or otherwise, then this Section 9.7 shall terminate
         and be of no further force and effect.


         4. UPDATED SCHEDULES TO CREDIT AGREEMENT. The following Schedules to
the Credit Agreement are hereby updated, supplemented or replaced as follows:

               (a) Schedule 1 is replaced by Schedule 1 attached hereto.

               (b) Schedule 1.1 is replaced by Schedule 1.1 attached hereto.

               (c) Schedule 1.2 is replaced by Schedule 1.2 attached hereto.

               (d) Schedule 1.3 is replaced by Schedule 1.3 attached hereto.

               (e) Schedule 8.1(f) is replaced by Schedule 8.1(f) attached
                   hereto.

         5. REPRESENTATIONS AND WARRANTIES. The Borrower and the Company
represent and

                                     2

<PAGE>

warrant that each of the representations and warranties contained in Section6 is
true, correct and complete in all material respects as of the date hereof to the
same extent as though made on such date and that no Default or Event of Default
has occurred and is continuing on the date hereof.

         6. EFFECTIVENESS OF LOAN DOCUMENTS. The Borrower hereby confirms that
each of the Security Documents shall continue to secure the payment and
performance of all of the Obligations under the Existing Agreement as amended
hereby and the Borrower's obligations under the Security Documents shall
continue to be valid and enforceable and shall not be impaired or limited by the
execution or effectiveness of this Amendment. Every reference contained in the
Loan Documents to the Credit Agreement shall mean and be a reference to the
Existing Agreement as amended hereby and as the Credit Agreement may be further
amended. Except as specifically amended by this Amendment, the Existing
Agreement and each of the Loan Documents shall remain in full force and effect
and are hereby ratified and confirmed.

         7. MISCELLANEOUS. This Amendment shall be governed by, interpreted
and construed in accordance with all of the same provisions applicable under
the Existing Agreement including, without limitation, all definitions set
forth in Section 1.1, the rules of interpretation set forth in Section 1.2,
the provisions relating to governing law set forth in Section 20, the
provisions relating to counterparts in Section 22 and the provision relating
to severability in Section 26.

         8. CONDITIONS TO EFFECTIVENESS. This Eighth Amendment to Credit
Agreement shall become effective on the earliest date (the "Effective Date")
that each of the following conditions precedent have been satisfied:

         (a) Documents . Each of (i) this Eighth Amendment to Credit Agreement,
and (ii) the Eighth Amendment to the Guaranty, shall have been duly executed and
delivered by the respective parties thereto, shall be in full force and effect
and shall be in form and substance satisfactory to each of the Lenders.

         (b) Certified Copies of Amendments of Organization Documents . The
Agent shall have received a Certificate of the Company to which there shall be
attached complete copies of any amendments to the Borrower's Limited Partnership
Agreement, Borrower's Certificate of Limited Partnership the Company's
Declaration of Trust or the Company's Bylaws which have become effective since
the complete certified copies of such documents which were previously delivered
to the Agent.

         (c) Resolutions . All action on the part of the Borrower and each
Guarantor necessary for the valid execution, delivery and performance by the
Borrower and each Guarantor of this Amendment and the Eighth Amendment to the
Guaranty shall have been duly and effectively taken, and evidence thereof
satisfactory to the Agent shall have been provided to the Agent. The Agent shall
have received from the Company true copies of the resolutions adopted by its
Board of Directors authorizing the transactions described herein, certified by
its secretary to be true and complete and in effect on the Effective Date.

         (d) Opinions of Counsel . Each of the Lenders and the Agent shall have
received

                                     3

<PAGE>

favorable opinions addressed to the Lenders and the Agent and dated as of the
Effective Date, substantially in the same form as, or with appropriate
provisions incorporating by reference, the opinions from Borrower's counsel
previously delivered to the Lenders and the Agent, copies of which are attached
as Exhibit E to the Credit Agreement. Such opinion may rely on opinions from
other law firms approved by the Agent as to matters of law applicable in the
various states.

         In the event that the Effective Date has not occurred on or before
March 31, 2000 then this instrument shall be void and the Existing Agreement
shall remain in effect as though this instrument had never been executed.

         IN WITNESS WHEREOF, the undersigned have duly executed this Amendment
as a sealed instrument as of the date first set forth above.

                                     PRIME GROUP REALTY TRUST


                                     By: [s]  Louis G. Conforti
                                        --------------------------------
                                        Its: Executive Vice President
                                            ----------------------------


                                     PRIME GROUP REALTY, L.P.
                                     By: PRIME GROUP REALTY TRUST,
                                         its managing general partner

                                         By: [s]  Louis G. Conforti
                                            -----------------------------
                                            Its: Executive Vice President


                                     FLEET NATIONAL BANK (f/k/a
                                     BANKBOSTON, N.A.), as Agent


                                     By: [s]  Illegible
                                        --------------------------------
                                        Its:
                                            -----------------------------
WITNESS:                                    FLEET NATIONAL BANK (f/k/a
                                            BANKBOSTON, N.A.)

______________________________              By: [s] Lori Litow
                                               --------------------------
                                               Lori Y. Litow
                                               Its Vice President

                                     4

<PAGE>

Commitment:                                               $17,500,000

Commitment Percentage:                                    50%




Notice Address:                     Fleet National Bank
                                    100 Federal Street
                                    Boston, MA  02110
                                    Attn: Real Estate Department

                                    With a copy to:

                                    Fleet National Bank
                                    115 Perimeter Center Place, N.E.
                                    Suite 500
                                    Atlanta, GA 30346
                                    Attn: Lori Y. Litow, Vice President

                                    Fax: (770)390-8434 or 391-9811


                                     5

<PAGE>

WITNESS:                                   CIBC  INC.


                                           By: /s/ Illegible
- ------------------------------                -----------------------




Commitment:                                                  $17,500,000

Commitment Percentage:                                       50%



Notice Address:

         CIBC Inc.
         c/o CIBC World Markets Corp.
         200 West Madison Street, Suite 2610
         Chicago, Illinois 60606
         Attn: Joel Gershkon, Executive Director

         Phone:  (312)855-3243
         Fax:    (312)855-3235

with a copy to:

         CIBC Inc.
         c/o CIBC World Markets Corp.
         2 Paces West
         2727 Paces Ferry Road, Suite 1200
         Atlanta, Georgia 30326
         Attn: Beverly Bowman

         Phone: (770) 319-4824
         Fax:   (770) 319-4950


                                     6

<PAGE>

                                    Exhibit A

              Compliance Certificate Schedule for Bank One Covenant

A. The following is a list of all of the Bank One Excluded Unconsolidated
Entities as of the date of this Compliance Certificate:

77 Fitness Center, L.P.
PGT Construction Co.
PRS Corporate Real Estate Services, Inc.
Prime Services Holding, Inc.
Prime Group Realty Services, Inc.


B.  Calculation of Bank One Covenant:

Total Liabilities [from line 3(g) of Compliance Certificate]           $________
Portion of Total Liabilities consisting of the Unconsolidated
         Entity Percentage of the Indebtedness of  the Bank One
         Excluded Unconsolidated Entities                              $________
Total Liabilities per Bank One Covenant                                $________

Annualized EBITDA [from line 3(z) of Compliance Certificate]           $________
Portion of annualized EBITDA consisting of the Unconsolidated
         Entity Percentage of the annualized EBITDA of  the Bank One
         Excluded Unconsolidated Entities                              $________
Annualized EBITDA per Bank One Covenant                                $________
Annualized EBITDA per Bank One Covenant divided by 0.0975              $________
Total Adjusted Assets per Bank One Covenant [Add lines 3(h) and 3(i)]  $________

Ratio of Total Liabilities to Total Adjusted Assets per Bank One Covenant =
_____, which is less than 65%


                                     7

<PAGE>

                                   SCHEDULE 1

                Lenders; Domestic and Eurodollar Lending Offices

<TABLE>
<CAPTION>

Domestic and Eurodollar Lending Offices:   Notice Address:
- ----------------------------------------   ---------------
<S>                                        <C>
Fleet National Bank                        Fleet National Bank
100 Federal Street                         100 Federal Street
Boston, MA  02110                          Boston, MA  02110
(Domestic and Eurodollar)                  Attn: Real Estate Department

                                           With a copy to:

                                           Fleet National Bank
                                           115 Perimeter Center Place, N.E.
                                           Suite 500
                                           Atlanta, GA  30346
                                           Attn: Lori Y. Litow, Vice President
                                           Fax:  (770)390-8434 or 391-9811


CIBC Inc.                                  CIBC Inc.
c/o CIBC World Markets Corp.               c/o CIBC World Markets Corp.
200 West Madison Street, Suite 2610        200 West Madison Street, Suite 2610
Chicago, Illinois 60606                    Chicago, Illinois 60606
(Domestic and Eurodollar)
                                           Attn: Joel Gershkon, Executive
                                                 Director
                                           Phone: (312)855-3243
                                           Fax:   (312)855-3235

                                           with a copy to:
                                           CIBC Inc.
                                           c/o CIBC World Markets Corp.
                                           2 Paces West
                                           2727 Paces Ferry Road, Suite 1200
                                           Atlanta, Georgia 30326

                                           Attn: Beverly Bowman
                                           Phone: (770) 319-4824
                                           Fax:   (770) 319-4950
</TABLE>

                                     8

<PAGE>

                                  SCHEDULE 1.1

<TABLE>
<CAPTION>

         Mortgaged Properties                                        Fee Owner
         --------------------                                        ---------
<S>                                                       <C>
1.   Hilton Parking Garage, Knoxville, TN                 Triad Parking Company, Ltd.

2.   SunTrust Bank Bldg., 201 4th Ave., N.,
     Nashville, TN                                        Nashville Office Building I, Ltd.

3.   The Weston, 4823 Kingston Pike,
     Knoxville, TN                                        Old Kingston Properties, Ltd.

4.   One Centre Square, 620 Market St.,
     Knoxville, TN                                        Professional Plaza, Ltd.

5.   Two Centre Square, 625 Gay St.,
     Knoxville, TN                                        Centre Square II, Ltd.


6.   Salt Creek Office Center and Sun Annex,              1990 Algonquin Road, L.L.C.
     1990-2060 Algonquin Road, Schaumburg, IL             2010 Algonquin Road, L.L.C.

7.   Enterprise Drive Office Center,
     2205-2255  Enterprise Drive, Westchester, IL         Enterprise Drive, L.L.C.

8.   4849-4851 Groveport Pike, Obetz, Ohio                Prime Columbus Industrial, L.L.C.

9.   2160 McGaw Road, Obetz, Ohio                         Prime Columbus Industrial, L.L.C.

10.  2400-2410 McGaw Road, Obetz, Ohio                    Prime Columbus Industrial, L.L.C.

11.  5160-5168 Paul G. Blazer Memorial Parkway,           Prime Columbus Industrial, L.L.C.
     Dublin, Ohio

12.  600 London Road, Delaware, Ohio                      Prime Columbus Industrial, L.L.C.
</TABLE>

                                     9

<PAGE>

<TABLE>
<CAPTION>

                                  SCHEDULE 1.2

                                   Commitments
                                   -----------

- ------------------------------------------------------------------
       LENDER                 COMMITMENT            COMMITMENT %
- ------------------------------------------------------------------
<S>                         <C>                     <C>
Fleet National Bank         $17,500,000.00               50%
- ------------------------------------------------------------------
CIBC Inc.                   $17,500,000.00               50%
- ------------------------------------------------------------------
Total                       $35,000,000.00              100%
- ------------------------------------------------------------------
</TABLE>

                                    10

<PAGE>

                                                                 MARCH 31, 2000

SCHEDULE 1.3

GUARANTOR SUBSIDIARIES, RELATED COMPANIES AND UNCONSOLIDATED ENTITIES


GUARANTOR SUBSIDIARIES
- -----------------------

NASHVILLE OFFICE BUILDING I, LTD.
OLD KINGSTON PROPERTIES, LTD.
PROFESSIONAL PLAZA, LTD.
CENTRE SQUARE II, LTD.
TRIAD PARKING COMPANY, LTD.
1990 ALGONQUIN ROAD, L.L.C.
2010 ALGONQUIN ROAD, L.L.C.
ENTERPRISE DRIVE, L.L.C.
PRIME COLUMBUS INDUSTRIAL, L.L.C.

RELATED COMPANIES
- -----------------

PRIME GROUP REALTY TRUST
PRIME GROUP REALTY, L.P.
1990 ALGONQUIN ROAD, L.L.C.
2010 ALGONQUIN ROAD, L.L.C.
555 HUEHL ROAD, L.L.C.
1699 E. WOODFIELD ROAD, L.L.C.
475 SUPERIOR AVENUE, L.L.C.
ENTERPRISE DRIVE, L.L.C.
ENTERPRISE DRIVE II, L.L.C.*
280 SHUMAN BLVD., L.L.C.
77 WEST WACKER LIMITED PARTNERSHIP
ENTERPRISE CENTER I, L.P.
ENTERPRISE CENTER II, L.P.
ENTERPRISE CENTER III, L.P.
ENTERPRISE CENTER IV, L.P.
ENTERPRISE CENTER V, L.P.
ENTERPRISE CENTER VI, L.P.
ENTERPRISE CENTER VII, L.P.
ENTERPRISE CENTER VIII, L.P.
ENTERPRISE CENTER XI, L.P.
ENTERPRISE CENTER X, L.P.
ARLINGTON HEIGHTS I, L.P.
ARLINGTON HEIGHTS II, L.P.
ARLINGTON HEIGHTS, III, L.P.
EAST CHICAGO ENTERPRISE CENTER LIMITED PARTNERSHIP
HAMMOND ENTERPRISE CENTER LIMITED PARTNERSHIP
NASHVILLE OFFICE BUILDING I, LTD.
OLD KINGSTON PROPERTIES, LTD.
PROFESSIONAL PLAZA, LTD.
CENTRE SQUARE II, LTD.


                                    11

<PAGE>

*NAME IS BEING CHANGED TO 2305 ENTERPRISE DRIVE, L.L.C.


                                    12

<PAGE>

SCHEDULE 1.3 (CONTINUED)

TRIAD PARKING COMPANY, LTD.
LIBERTYVILLE TECH WAY, L.L.C.
3818 GRANDVILLE, L.L.C.
306 ERA DRIVE, L.L.C
1301 RIDGEVIEW DRIVE, L.L.C.
515 HUEHL ROAD, L.L.C
455 ACADEMY DRIVE, L.L.C
801 TECHNOLOGY WAY, L.L.C
PRIME COLUMBUS INDUSTRIAL, L.L.C.
KEMPER/PRIME INDUSTRIAL PARTNERS
1051 N. KIRK ROAD, L.L.C.
4211 MADISON STREET, L.L.C
200 E. FULLERTON, L.L.C.
350 RANDY ROAD, L.L.C.
4300 MADISON STREET, L.L.C.
370 CAROL LANE, L.L.C.
388 CAROL LANE, L.L.C.
941 WEIGEL DRIVE, L.L.C.
342 CAROL LANE, L.L.C.
343 CAROL LANE, L.L.C.
371 N. GARY AVENUE, L.L.C.
2000 YORK ROAD, L.L.C.
1600 167TH STREET, L.L.C.
` E. TOWER ROAD, L.L.C.
4343 COMMERCE COURT, L.L.C.
11039 GAGE AVENUE, L.L.C.
11045 GAGE AVENUE, L.L.C.
1401 S. JEFFERSON, L.L.C.
4100 MADISON STREET, L.L.C.
4160 MADISON STREET, L.L.C.
550 KEHOE BLVD., L.L.C.
2675 N. MAYFAIR ROAD, L.L.C.
33 N. DEARBORN, L.L.C.
33 N. DEARBORN SPC, INC.
WILKE-VENTURA, L.L.C.
PGR FINANCE I, INC.
PGR FINANCE II, INC.
PGR FINANCE III, INC.
PGR FINANCE IV, INC.
PGR FINANCE V, INC.
PGR FINANCE VI, INC.
PGR FINANCE VII, INC.
PGR FINANCE VIII, INC.


                                    13

<PAGE>

SCHEDULE 1.3 (CONTINUED)


PGR FINANCE IX, INC.
PGR FINANCE X, INC.
PGR FINANCE XI, INC.
PGR FINANCE XII, INC.
PGR FINANCE XIII, INC.
PGR FINANCE XIV, INC.
PGR FINANCE XV, L.L.C.
LASALLE-ADAMS, L.L.C.
MICHIGAN-ADAMS, L.L.C.
6400 SHAFER COURT, L.L.C.
DEKALB BUSINESS PARK, L.L.C.
TWO CENTURY CENTRE, L.L.C.
OAK BROOK BUSINESS CENTER, L.L.C.
PRIME ROLLING MEADOWS, L.L.C.
PRIME AURORA, L.L.C.
2000 USG DRIVE, L.L.C.
LIBERTYVILLE CORPORATE OFFICE PARK, L.L.C.
300 CRAIG PLACE, L.L.C.
PRIME/BEITLER DEVELOPMENT COMPANY, L.L.C.
180 N. LASALLE, L.L.C.
2100 SWIFT DRIVE, L.L.C.
330 N. WABASH AVENUE, L.L.C.
33 W. MONROE, L.L.C.
BRE/CITY CENTER, L.L.C.
MONROE-WACKER, L.L.C.
MONROE-WACKER OFFICE, L.L.C.
KIMBERLY EAST, L.L.C.
901 TECHNOLOGY WAY, L.L.C.
180 KEHOE BLVD., L.L.C.
800 JORIE BLVD., L.L.C.
PHOENIX OFFICE, L.L.C.
43 HINTZ ROAD, L.L.C.
LIBERTYVILLE CORPORATE OFFICE PARK II, L.L.C.
330 N. WABASH MEZZANINE, L.L.C.
BRUSH HILL OFFICE CENTER, L.L.C.
33 W. MONROE I, L.L.C.
KIMBERLY WEST, L.L.C.


UNCONSOLIDATED ENTITIES
- ------------------------

77 WEST WACKER DRIVE, L.L.C.
77 FITNESS CENTER, L.P.
PGT CONSTRUCTION CO.
PRS CORPORATE REAL ESTATE SERVICES, INC.
PRIME SERVICES HOLDING, INC.
PRIME GROUP REALTY SERVICES, INC.

                                    14

<PAGE>

                                 SCHEDULE 8.1(F)

<TABLE>
<CAPTION>

                      RECOURSE INDEBTEDNESS AS OF 3/31/001

LENDER                              PROPERTY/LOAN             LOAN AMOUNT
- ------                              -------------             -----------
<S>                                 <C>                       <C>
       RECOURSE AMOUNT

LaSalle National Bank(2)            Line of Credit            $11,500,000
       $11,500,000
Bank One, NA(3)                     Bond Letters of Credit    $48,809,587
       $10,000,000
CIGNA(3)                            Continental Towers        $75,000,000
       $4,809,3114
LaSalle National Bank(3)            Dearborn Center           $13,500,000
       $3,500,000
Capital Company of America(3)       180 North LaSalle         $20,000,000
       $10,000,000
Corus Bank(3)                       43 Hintz Road             $6,000,000
       $1,500,000
Corus Bank(3)                       27 and 77 S. Wacker       $4,000,000
       $4,000,000
Corus Bank(3)                       300 West Monroe           $24,000,000
       $24,000,000
Corus Bank(3)                       Libertyville Corporate    $18,083,000
       $18,083,000
Corus Bank(3)                       2000 USG Drive            $6,310,000
      $6,310,000
Corus Bank(3)                       320 Fullerton Avenue      $8,050,000
      $8,050,000
LASALLE NATIONAL BANK(3)            6700 TOUHY                $2,968,000
- -------------------------------------------------------------------------
     $1,484,000
- ---------------

TOTAL

     $103,236,311                                             $238,220,587
</TABLE>

- -------------------------
(1) Excludes the BankBoston Line of Credit
(2) Prime Group Realty, L.P. is the borrower
(3) Prime Group Realty, L.P. is a guarantor

(4) This amount is reduced annually by $887,873.


                                    15



<PAGE>

                                                                   Exhibit 12.1

                  Prime Group Realty Trust and The Predecessor

             Statements Regarding Computation of Ratios of Earnings
           to Combined Fixed Charges and Preferred Share Distributions
                            (Dollars in Thousands)

<TABLE>
<CAPTION>

                                                                Prime Group Realty Trust - Historical
                                                  ------------------------- -----------------------------------------
                                                        Three Months                                   Period from
                                                           ended                   Year ended          November 17,
                                                         March 31,                December 31,         1997 through
                                                  ------------------------- -------------------------- December 31,
                                                      2000         1999          1999        1998           1997
                                                  ------------------------- -----------------------------------------
<S>                                               <C>             <C>          <C>          <C>            <C>
Earnings:
   Income before preferred share
     distributions and minority
     interests per the consolidated
     financial statements                             $ 7,794     $ 8,068      $ 33,567     $30,866        $1,427
   Interest expense                                    12,986      10,378        42,648      30,901         1,680
   Amortization of debt issuance costs                    921         474         2,424       1,230           140
                                                  -----------------------   -----------------------------------------
Earnings                                              $21,701     $18,920      $ 78,639     $62,997        $3,247
                                                  ========================= =========================================
Fixed charges:
   Interest expense                                   $12,986     $10,378      $ 42,648     $30,901        $1,680
   Capitalization of interest expense                   2,924       1,117         7,986       2,498            --
   Amortization of debt issuance costs                    921         474         2,424       1,230           140
   Preferred share distributions                        3,037       3,000        12,103       7,971           345
                                                  -----------------------   -----------------------------------------
Total fixed charges                                   $19,868     $14,969      $ 65,161     $42,600        $2,165
                                                  ========================= =========================================
Ratio of earnings to combined fixed charges
   and preferred share distributions                     1.09        1.26          1.21        1.48          1.50
                                                  ========================= =========================================
Excess of earnings to combined fixed charges
   and preferred share distributions                  $ 1,833     $ 3,951      $ 13,478     $20,397        $1,082
                                                  ========================= =========================================

Funds from operations:
   Funds from operations (1)                          $15,314     $12,646      $ 53,983     $47,996        $3,439
   Interest expense                                    12,986      10,378        42,648      30,901         1,680
   Amortization of debt issuance costs                    921         474         2,424       1,230           140
   Preferred share distributions                        3,037       3,000        12,103       7,971           345
                                                  -----------------------   -----------------------------------------
Adjusted funds from operations                        $32,258     $26,498      $111,158     $88,098        $5,604
                                                  ========================= =========================================
Fixed charges:
   Interest expense                                   $12,986     $10,378      $ 42,648     $30,901        $1,680
   Capitalization of interest expense                   2,924       1,117         7,986       2,498             -
   Amortization of debt issuance costs                    921         474         2,424       1,230           140
   Preferred share distributions                        3,037       3,000        12,103       7,971           345
                                                  -----------------------   -----------------------------------------
Total fixed charges                                   $19,868     $14,969      $ 65,161     $42,600        $2,165
                                                  ========================= =========================================
Ratio of funds from operations to combined fixed
   charges and preferred share distributions             1.62        1.77          1.71        2.07          2.59
                                                  ========================= =========================================
Excess of funds from operations to
   combined fixed charges and
   preferred share distributions                      $12,390     $11,529      $ 45,997     $44,264        $3,619
                                                  ========================= =========================================
</TABLE>

(1) Funds from operations for the three months ended March 31, 2000 and
    1999, for the years ended December 31, 1999 and 1998, and for the period
    from November 17, 1997 through December 31, 1997 have been restated in
    accordance with standards established by the Board of Governors of NAREIT
    in its 1999 White Paper, which results in the exclusion of certain non
    recurring items and the inclusion of the effects of straight line rental
    revenue. Years and periods prior to November 17, 1997 have not been
    restated due to the unavailability of certain required information.

                                       1

<PAGE>

                                                                    Exhibit 12.1

                  Prime Group Realty Trust and The Predecessor

             Statements Regarding Computation of Ratios of Earnings
           to Combined Fixed Charges and Preferred Share Distributions
                             (Dollars in Thousands)

<TABLE>
<CAPTION>

                                                                   Predecessor - Historical
                                                      -----------------------------------------------
                                                      Period from
                                                      January 1,
                                                        1999
                                                       through               Year ended
                                                       November             December 31,
                                                         16           -------------------------------
                                                        1997              1996             1995
                                                      -----------------------------------------------
<S>                                                   <C>                <C>              <C>
Earnings:
   Loss before preferred share distributions
     and minority interests per the combined
     financial statements                             $(29,050)         $(31,417)        $(29,576)
   Interest expense                                     34,417            37,217           36,234
   Amortization of debt issuance costs                     630               594            1,148
                                                      -----------------------------------------------
Earnings                                              $  5,997          $  6,394         $  7,806
                                                      ===============================================
Fixed charges:
   Interest expense                                   $ 34,417          $ 37,217         $ 36,234
   Capitalization of interest expense                       --                --               --
   Amortization of debt issuance costs                     630               594            1,148
   Preferred share distributions                            --                --               --
                                                      -----------------------------------------------
Total fixed charges                                   $ 35,047          $ 37,811         $ 37,382
                                                      ===============================================

Ratio of earnings to combined fixed charges
   and preferred share distributions                        --                --               --
                                                      ===============================================
Deficit of earnings to combined fixed charges
   and preferred share distributions                  $(29,050)         $(31,417)        $(29,576)
                                                      ===============================================
Funds from operations:
   Funds from operations (1)                          $(14,461)         $(17,367)        $(12,733)
   Interest expense                                     34,417            37,217           36,234
   Amortization of debt issuance costs                     630               594            1,148
   Preferred share distributions                            --                --               --
                                                      -----------------------------------------------
Adjusted funds from operations                        $ 20,586          $ 20,444         $ 24,649
                                                      ===============================================
Fixed charges:
   Interest expense                                   $ 34,417          $ 37,217         $ 36,234
   Capitalization of interest expense                       --                --               --
   Amortization of debt issuance costs                     630               594            1,148
   Preferred share distributions                            --                --               --
                                                      ===============================================
Total fixed charges                                   $ 35,047          $ 37,811         $ 37,382
                                                      ===============================================
Ratio of funds from operations to
   combined fixed charges and preferred
   share distributions                                      --                --               --
                                                      ===============================================
Deficit of funds from operations to combined
   fixed charges and preferred share
   distributions                                      $(14,461)         $(17,367)        $(12,733)
                                                      ===============================================
</TABLE>

(1)      Funds from operations for the three months ended March 31, 2000 and
         1999, for the years ended December 31, 1999 and 1998, and for the
         period from November 17, 1997 through December 31, 1997 have been
         restated in accordance with standards established by the Board of
         Governors of NAREIT in its 1999 White Paper, which results in the
         exclusion of certain non recurring items and the inclusion of the
         effects of straight line rental revenue. Years and periods prior to
         November 17, 1997 have not been restated due to the unavailability
         of certain required information.

                                       2



<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                          16,995
<SECURITIES>                                         0
<RECEIVABLES>                                  108,673
<ALLOWANCES>                                         0
<INVENTORY>                                     82,969<F1>
<CURRENT-ASSETS>                                     0
<PP&E>                                       1,303,123
<DEPRECIATION>                                (45,750)
<TOTAL-ASSETS>                               1,466,010
<CURRENT-LIABILITIES>                          263,207<F2>
<BONDS>                                        869,976
                                0
                                         40
<COMMON>                                           153
<OTHER-SE>                                     332,634
<TOTAL-LIABILITY-AND-EQUITY>                 1,466,010
<SALES>                                              0
<TOTAL-REVENUES>                                56,671
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                37,115<F3>
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              12,986
<INCOME-PRETAX>                                  6,570
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     6,570
<EPS-BASIC>                                        .23
<EPS-DILUTED>                                      .23
<FN>
<F1>Amount includes restricted cash escrows ($41,853), net deferred costs
($27,140), and other assets ($13,976).
<F2>Amount includes accrued interest payable ($3,881) accrued real estate taxes
($31,740), accounts payable and accrued expenses ($34,779), liabilities for
leases assumed ($2,957), dividends payable ($8,154), other liabilities ($10,481)
and minority interests of ($171,215).
<F3>Amount includes property operations ($12,810), real estate taxes ($10,389),
depreciation and amortization ($9,232), general and administrative expenses
($2,264), and minority interests allocation ($2,420).
</FN>


</TABLE>


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