Net         Total     Average       Rentable   Annualized   Base Rent/ # of   Area in   Percent Base Rent 3   Leased Property Buildings   Sq. Feet 1   Leased 2   (in thousands)   Sq. Feet 4   Significant Tenants 5 Eastern Region Downtown Washington, D.C.:     International Square 3   1,014,556   100.0%   $ 33,736     $33.25      International Monetary Fund (49%)     900 19th Street 1   101,215   100.0% 3,252 32.14   America’s Community Bankers (30%) Stone & Webster (13%) Korn/Ferry International (12%) Lucent Technologies (11%)     2550 M Street 1   187,931   96.8% 7,800 42.89   Patton & Boggs (96%)     1730 Pennsylvania Avenue 6 1   229,377   100.0% 8,181 35.67   Federal Deposit Insurance Co. (47%) King & Spalding (39%)     1255 23rd Street 7 1   306,126   99.3% 8,573 28.20   Chronicle of Higher Education (29%) William M. Mercer, Inc. (22%)     1747 Pennsylvania Avenue 1   152,104   99.8% 4,843 31.89   Legg Mason Wood Walker, Inc. (29%)     1775 Pennsylvania Avenue 1   143,981   97.5% 4,065 28.95   Citicorp Savings of Washington, DC (89%) Suburban Washington, D.C.:     One Rock Spring Plaza 6 1   205,721   98.4% 5,393 26.63   Caterair International (22%) Sybase, Inc. (19%)     Sunrise Corporate Center 3   260,253   99.2% 6,082 23.57   Software AG of North America (81%)     Reston Crossing East & West 2   327,788   100.0% 5,736 17.50   Nextel Communications, Inc. (100%) Atlanta, GA:     Glenridge 1   64,219   91.9% 1,149 19.48   digitalinsurance.com (15%) Communication Trends, Inc. (11%)     Century Springs West 1   95,055   83.1% 1,498 18.97   No tenant occupies 10%     Holcomb Place 1   72,889   100.0% 1,277 17.52   Intercept Group, Inc. (47%) Hitachi Telecom (USA), Inc. (20%) Progeni Corporation (13%)     Midori 1   99,691   100.0% 2,113 21.20   National Consumer Services (66%) United Parcel Service (21%)     Parkwood 1   150,270   98.5% 2,893 19.54   Onesource (22%), Corecommerce (11%)     Lakewood 1   80,483   100.0% 1,429 17.75   Paychex, Inc. (28%) Morrison HealthCare, Inc. (25%) The Mulling Group (25%) Hickson (USA) Corp. (17%)     The Summit 1   179,085   100.0% 3,202 17.88   Unisys Corporation (86%) CSC Continuum, Inc. (14%)     Spalding Ridge 1   128,233   99.3% 2,581 20.28   IT Corporation (57%) Federal Deposit Insurance Co. (10%)     2400 Lake Park Drive 1   100,918   78.6% 1,347 16.99   United Healthcare Services, Inc. (29%) GSA (17%)     680 Engineering Drive 1   62,154   100.0% 613 9.86   EMS Technologies Inc. (67%) Enreve Corporation (22%) Loral Aerospace Corporation (11%)     Embassy Row 3   464,895   92.6% 7,890 18.32   Ceridian Corporation (24%) Cabot Corporation (10%)     Embassy 100, 500 2   190,470   100.0% 4,112 21.59   Art Institute of Atlanta, Inc. (60%) Edutrek International, Inc. (40%)     Waterford Centre 1   82,344   97.4% 1,534 19.12   Dateq Information Network Inc. (21%) VCG, Inc. (18%) Arkwright Mutual Insurance (15%) Southeast Region Subtotal 31    4,699,758   97.6% Pacific Region Southern California, Orange County/Los Angeles:     Scenic Business Park 4   140,812   98.1%   $  2,206 $15.97   Talbert Medical Group (20% Miles, Wright, Finely & Zak (18%) Terayon Communications (17%) Coast Community College (13%)     Harbor Corporate Park 4   151,924   96.1% 2,734 18.73   Clayton Environmental (10%)     Plaza PacifiCare 1   104,377   100.0% 1,019 9.76   Pacificare Health Systems Inc. (100%)     Katella 1   80,609   97.2% 1,337 17.06   Friendly Hills Healthcare (19%)     Warner Center 12     344,147   98.2% 7,987 23.64   El Camino Resources, Inc. (25%) General Services Administration (17%)     South Coast Executive Center 2   161,692   100.0% 3,784 23.40   State Comp. Insurance Fund (33%)     Warner Premier 1   61,553   66.3% 952 23.34   RSL Com, USA (27%) Charles Schwab (12%)     Von Karman 1   104,138   100.0% 2,552 24.51   Vision Solutions, Inc. (41%) Fidelity National Title Ins. (26%) Taco Bell Corporation (18%)     2600 W. Olive 1   144,831   100.0% 3,685 25.44   Walt Disney Company (89%)     Bay Technology Center 2   107,481   100.0% 1,629 15.16   Amresco Residential Mortgage (57%) Aqcess Technologies, Inc. (43%)     Pacific Corporate Plaza 1, 2, 3 3   125,298   100.0% 2,138 17.06   Zland, Inc. (53%) Covenant Care California, Inc. (16%)     Alton Deere Plaza 6   182,183   82.1% 2,835 18.96   Nextlink California (34%)     Westlake Spectrum 2   108,084   100.0% 2,000 19.96   Pinkerton’s Inc. (63%) Coyote Network Systems, Inc. (21%) Insweb Corporation (16%) Southern California, San Diego:     Del Mar Corporate Plaza 2   123,142   100.0% 3,293 26.74   Stellcom, Inc. (79%) Peregrine Systems, Inc. (21%)     Wateridge Pavilion 1   62,194   84.5% 938 17.84   Infogation (25%) Platinum Solutions, Inc. (19%) Wateridge Insurance Service (18%) TCS Mortgage, Inc. (14%)     Towne Center Technology       Park 1, 2, 3 3   182,120   100.0% 3,064 16.82   Gateway, Inc. (100%)     Lightspan 1   64,800   100.0% 1,182 18.24   Lightspan Partnership, Inc. (100%)     La Jolla Spectrum 1   79,759   100.0% 2,465 30.90   Novartis Agricultural Discover (100%)     Palomar Oaks Technology Park 6   170,358   100.0% 2,102 12.34   Unifet, Inc. (23%) Excalibur Technologies Corp. (18%) Torrey Pines Research, Inc. (13%) Pacific Analytical, Inc. (11%)     Jaycor 1   105,358   100.0% 1,896 18.00   Gateway, Inc. (100%)     Highlands Corporate Center 5   205,085   99.0% 6,044 29.77   Brobeck, Phleger & Harrison (14%) Genesis Communications (12%) Northern California, San Francisco Bay Area:     CarrAmerica Corporate Center 6   1,001,976   99.8% 18,773 18.77   AT&T (47%), Peoplesoft (32%) Pacific Bell Mobile Services (17%)     Valley Business Park I 2   61,600   100.0% 1,102 17.88   Leybold Inficon, Inc. (38%) Informative Inc. (19%) Millipore, Inc. (19%) Acer Labs, Inc. USA (17%)     Bayshore Centre 2 1   94,874   100.0% 1,879 19.80   Redback Networks, Inc. (100%)     Rincon Centre 3   201,178   100.0% 3,254 16.17   Toshiba America Electronic (31%) Propel Software Corporation (44%) Future Electronics Corp. (19%)     Valley Centre II 4   212,082   100.0% 3,617 17.06   Boston Scientific (100%)     Valley Office Centre 2   68,881   100.0% 2,165 31.43   Bank of America (21%) Quadrep, Inc. (13%)     Valley Centre 2   102,291   100.0%   $  1,928 $18.84   Seagate Technology (40%) Numerical Technologies, Inc. (38%) Vivace Networks (22%)     Valley Business Park II 6   166,928   100.0% 3,228 19.34   Pericom Semiconductor Corp. (40%)     Rio Robles 7   368,178   100.0% 5,660 15.37   Fujitsu Microlectronics (41%) KLA Instruments Corporation (36%) NEC Systems, Inc. (23%)     3745 North First Street 1   67,582   100.0% 973 14.40   Comdisco, Inc. (100%)     Baytech Business Park 4   300,000   100.0% 5,181 17.27   Schlumberger Technologies (34%) Caspian Networks (25%) Rapid 5 Networks, Inc. (13%)     3571 North First Street 1   116,000   100.0% 1,357 11.70   Sun Microsystems, Inc. (100%)     San Mateo Center I 1   70,000   100.0% 2,604 37.20   Franklin Resources (100%)     Oakmead West Land A-G 7   425,981   100.0% 9,457 22.20   Applied Materials Inc. (100%)     San Mateo II & III 2   141,404   100.0% 5,684 40.20   Franklin Resources (34%) Women.com Networks (31%)     Hacienda West 2   206,992   99.3% 5,599 27.23   Sun Microsystems, Inc. (13%) Paychex, Inc. (12%)     Sunnyvale Technology Center 5   165,520   100.0% 3,320 13.77   Lattice Semiconductor Corp. (51%) BMC Software (25%) Metelics Corporation (12%) Nokia Internet Comm., Inc. (12%)     Clarify Corporate Center 1, 2, 3, 4 4   258,048   100.0% 6,482 25.12   Nortel Networks, Inc. (100%)     Valley Technology       Center 1, 2, 3, 4, 5 7   460,590   100.0% 10,703 23.24   Lattice Semiconductor Corp. (29%) TSMC North America, Inc. (24%) Navisite, Inc. (14%)     Golden Gateway Commons 3   273,327   98.6% 8,068 29.94   Sharper Image Corporation (21%) ABM Industries, Inc. (11%)     Techmart Commerce Center 1   265,979   100.0% 10,256 38.56   Network Conference Co., Inc. (14%)     Freemont Technology Park 1, 2, 3 3   139,304   100.0% 2,469 17.73   Applied Fiber Optics, Inc. (39%) Flash Electronics, Inc. (32%) Bandwidth Unlimited, Inc. (29%) Portland, OR:     Sunset Corporate Park 3   132,531   97.9% 1,054 8.12   First Insight Corporation (34%) Volkswagen Corporation (34%) Mindfinders Inc. (17%)     Rock Creek Corp Center 1   142,662   100.0% 431 3.02   Corillian Corporation (86%) University of Phoenix (14%) Seattle, WA:     Redmond 10    396,497   100.0% 5,453 13.75   Avaya, Inc. (21%) Cardiac Pacemakers Inc. (20%) Genetic Systems (14%)     Redmond Hilltop B & C 2   90,880   100.0% 1,370 15.07   Concur Technologies (90%)     Canyon Park 6   316,978   96.4% 3,656 11.97   Icos Corporation (28%) Targeted Genetics Corporation (24%) Federal Express Corporation (10%)     Willow Creek 1   96,179   100.0% 981 10.20   Data I/.O Corporation (100%)     Willow Creek Corp.       Center 1, 2, 3, 4, 5, 6 6   329,009   100.0% 5,089 15.47   Safeco Insurance Co. of America (52%) Metawave Communications Co. (29%) Nextlink Communications, Inc. (13%)     Canyon Park Commons 1, 2, 4 3   176,846   100.0% 2,251 12.73   Washington Mutual Bank (62%) AT&T Corp. (38%)     Canyon Park Commons 1   95,290   100.0% 1,342 14.08   Safeco Insurance Co. (100%) Pacific Region Subtotal 167       9,755,532   98.9% Central Region Austin, TX:     City View Centre 3   136,183   100.0%   $ 2,506 $18.40   Holt, Reinhart & Winston, Inc. (76%) Confiniti (16%)     City View Center 1   128,716   100.0% 2,073 16.10   Broadwing Telecommunication (100%)     Tower of the Hills 2   166,149   99.7% 2,922 17.65   Texas Guaranteed Student Loan (70%) Chicago, IL:     Parkway North I 1   249,314   87.8% 3,386 15.46   Alliant Foodservice, Inc. (53%) Toshiba America Electronics (10%)     Unisys 2   364,115   89.8% 4,930 15.07   PNC Mortgage Corp. of America (24%) Hub Group, Inc. (11%)     The Crossings 2   296,230   91.7% 4,880 17.96   Allstate Insurance Company (14%)     Bannockburn I & II 2   209,582   97.8% 3,248 15.85   IMC Global, Inc. (39%) Parexel (21%)     Bannockburn IV 1   108,469   96.0% 1,655 15.90   Open Text, Inc. (35%) Abbott Laboratories (13%) New York Life Insurance Co. (10%) Dallas, TX:     Cedar Maple Plaza 3   112,682   78.9% 1,773 19.95   No tenant occupies 10%     Quorum North 1   116,084   92.9% 2,070 19.20   Digital Matrix Systems, Inc. (20%) HQ Dallas Quorum North (17%)     Quorum Place 1   178,296   97.1% 3,241 18.72   VHA Southwest, Inc. (22%) Objectspace, Inc. (11%)     Tollway Plaza 1, 2 2   359,903   99.4% 8,458 23.64   Sun Microsystems, Inc. (27%) American Relocation Mgmt. (10%) Omnioffices, Inc. (10%)     Two Mission Park 1   78,046   100.0% 1,332 17.06   Macromedia, Inc. (32%) Bland, Garvey & Taylor, Inc. (17%)     Commons @ Las Colinas 1, 3 2   604,234   100.0% 9,810 16.24   Nokia, Inc. (100%)     5000 Quorum 1   161,823   97.2% 3,087 19.63   Case Corporation (11%) Central Region Subtotal 25     3,269,826   95.6% Mountain Region Denver, CO:     Harlequin Plaza 2   329,210   90.2%   $  5,148 $17.33   Travelers Insurance Co. (24%) Bellco First Federal Credit (13%) Regis University (11%)     Quebec Court I 1   130,000   100.0% 2,144 16.50   Time Warner Communications (100%)     Quebec Court II 1   157,294   100.0% 2,187 13.90   Tele-Communications, Inc. (100%)     Quebec Centre 3   106,865   83.9% 1,551 17.29   Walberg & Dagner, P.C. (11%) Phoenix, AZ:     Camelback Lakes 2   201,373   99.9% 4,114 20.44   Chancellor Media of L.A. (38%) Humana Health Plan, Inc. (14%) American Founders Life Ins. (10%) Compass Bank (10%)     Pointe Corridor 1   178,114   68.7% 2,268 18.53   Compasslearning, Inc. (20%) Benesight (12%)     Four Gateway 1   136,817   98.5% 2,953 21.92   Eclipsys Corporation (29%) Options Health Care, Inc. (26%)     Highland Park 1   78,970   88.5% 1,489 21.30   Springstreet (14%)     The Grove @ Black Canyon 1   104,571   95.9% 1,979 19.73   Cigna Healthcare of Arizona (81%)     Qwest Communications 4   532,506   100.0% 9,144 17.17   Qwest Communications (100%)     Concord Place 1   133,555   73.3% 2,273 23.24   Peacock Hislop, Staley & Given (16%) Salt Lake City, UT:     Sorenson Research Park 5   283,076   93.4% 3,193 12.07   Convergys Customer Mgmt. (46%) Intel Corporation (15%) ITT Educational Services, Inc. (15%)     Wasatch Corporate Center 3   178,231   100.0% 2,185 12.26   Advata Bank Corporation (28%) Achieveglobal, Inc. (23%) Fonix Corporation (14%) Tenfold Corporation (14%) Musician’s Friend, Inc. (12%)     Wasatch Corporate Center 17, 18 2   121,654   100.0% 1,784 14.67   Ebay, Inc. (59%) Citrix Systems (21%) Western Aggregates, Inc. (15%)     Sorenson X 1   41,288   100.0% 763 18.49   Electronic Data Systems (73%) Mountain Region Subtotal 29     2,713,524   93.6% Total Consolidated Properties 252      20,438,640 409,073 Weighted Average   97.4% 20.54   Net Total Average   Rentable Annualized Base Rent/ # of   Area in   Percent Base Rent 3 Leased Property Buildings   Sq. Feet 1   Leased 2 (in thousands) Sq. Feet 4   Significant Tenants 5 Washington, D.C.:     1919 Pennsylvania 8 1   263,931   98.3%   $  8,709 $36.61   Allied Capital Corporation (21%) Cole, Raywid & Braverman, LLP (15%)     Bond Building 9 1   242,787   98.4% 2,181 27.23   General Services Administration (97%)     1717 Pennsylvania Avenue 10 1   184,446   100.0% 6,732 36.50   MCI Telecommunications Corp. (57%)     Booz-Allen & Hamilton Building 11 1   222,989   100.0% 3,604 16.16   Booz-Allen & Hamilton, Inc. (100%) Portland, OR:     GM Call Center 12 1   103,279   100.0% 1,232 11.93   GM Call Center (100%) Chicago, IL:     Parkway North 13 5   653,914   100.0% 10,667 17.51   Fujisawa USA, Inc. (20%) Associates Commerce Solutions (19%) Shand Morahan & Company (11%) Dallas, TX:     Royal Ridge 13 3   370,997   99.0% 6,155 16.59   Capital One Services, Inc. (43%) GTE North, Inc. (39%) Cendant Operations, Inc. (11%) Austin, TX:     Riata 13 13     905,673   100.0% 16,337 16.53   Janus Capital Corporation (35%) Electronic Data Systems (29%) Pervasive Software, Inc. (10%) Denver, CO:     Panorama 13 5   527,200   96.7% 9,715 19.05   Charles Schwab & Co., Inc. (26%), AT&T Corporation (16%) ICG Equipment, Inc. (11%) Total Unconsolidated Properties 31   3,475,216 65,332 Weighted Average   99.1% 20.26 Total All Operating Properties 283   23,913,856   $ 474,405 Weighted Average   97.7% $20.49 1 Includes office and retail space but excludes storage. 2 Includes spaces for leases that have ben executed and have commenced as of December 31, 2000. 3 Total annualized base rent equals total original base rent, including historical contractual increases and excluding (i) percentage rents, (ii) additional rent payable by tenants such as common area maintenance, real estate taxes and other expense reimbursements, (iii) future contractual or contingent rent escalations and (iv) parking rents. 4 Calculated as total annualized base rent divided by net rentable area leased. 5 Includes tenants leasing 10% or more of rentable square footage (with the percentage of rentable square footage in parentheses). 6 We own the improvements on the property and have a leasehold interest in all the underlying land. 7 We hold a general and limited partner interest in a partnership that owns the property. 8 We own 49% through a partnership. 9 We own 15% through a partnership. 10 We own 50% through a limited liability company. 11 We own 50% through a joint venture. 12 We own 16% through a joint venture. 13 We own 35% through a joint venture.