EXHIBIT 3.1.7 Liberty Property Limited Partnership Partnership Interests As of December 31, 1999 Number of Partnership Limited Partners Interests % - ---------------------------------------- ----------- --------- Balitsaris, Peter 58,542 0.0726% Carr, Clai 138,000 0.1711% Castorina, John 14,491 0.0180% Denny, Joseph 260,250 0.3226% Felix, Jill 195,043 0.2418% Fenza, Robert 195,043 0.2418% Fitzgerald, Ward 14,491 0.0180% Gildea, Larry 93,319 0.1157% Goldschmidt, Robert 22,895 0.0284% Hagan, Michael 14,491 0.0180% Hammers, David 241,673 0.2996% Kiel, Bob 14,491 0.0180% Kline, Earl 19,128 0.0237% Lutz, Jim 37,312 0.0463% Mazzerralli, James 14,491 0.0180% Messaros, Sharron 7,245 0.0090% Morrissey, Mary Beth 14,491 0.0180% Price, Leslie 175,336 0.2174% Reichert, Joseph 27,242 0.0338% Rouse & Assoc., Inc. 5,506 0.0068% Rouse, Willard 457,665 0.5674% Trust Congdon Children 95,347 0.1182% Trust Hammers Children 95,348 0.1182% Trust for Mary Rouse 13,621 0.0169% Trust for Anne Rouse 13,621 0.0169% Trust for Rouse Younger Children 81,726 0.1013% Trust for Laurie Hammers 5,506 0.0068% Weitzmann, Mike 42,312 0.0525% Liberty Special Purpose Trust 10,574 0.0131% Lingerfelt, Rebecca 8,076 0.0100% Trust J. Ryan Lingerfelt 15,625 0.0194% Trust Justin M. Lingerfelt 15,625 0.0194% Trust Daniel K. Lingerfelt 15,625 0.0194% Trust Catherine E. Lingerfelt 15,625 0.0194% Lingerfelt, Alan T. 317,500 0.3936% Lingerfelt, L. Harold 164,375 0.2038% The James J. Carpenter Living Trust 78,750 0.0976% Lingerfelt, David L. 30,674 0.0380% Ferguson, Morris U. 6,000 0.0074% Lingerfelt, Carl C. 10,900 0.0135% Wright, Murray H. 7,500 0.0093% Latimer, Erle Marie 12,500 0.0155% Mazel Investments LLC 28,025 0.0347% Stewart R. Stender 57,613 0.0714% Robert C. Lux 57,612 0.0714% NWBC Associates, Inc. 28,191 0.0349% 330 Associates, Inc. 3,407 0.0042% Number of Partnership Limited Partners - Cont'd Interests % - ---------------------------------------- ----------- --------- APEX Asset Management Corp. 85,051 0.1054% LPC of S.C., Inc. 183,742 0.2278% Libco of Florida, Inc. 283,238 0.3511% Rouse & Associates Maryland Partnership 20,000 0.0248% A. Carl Helwig 356,737 0.4422% James J. Sunday 79,348 0.0984% Charles J. Walters 290,723 0.3604% Magaret A. Doyle 19,380 0.0240% Stanford Baratz 9,044 0.0112% Walton Street Real Estate Fund II, LP 311,562 0.3862% Walton Street Managers II, LP 3,147 0.0039% Preferred Limited Partners - ---------------------------------------- Belair Real Estate Corporation 1,235,000 1.5310% Belcrest Realty Corporation 2,565,000 3.1798% General Partner - ---------------------------------------- Liberty Property Trust - Preferred Units 5,000,000 6.1984% Liberty Property Trust GP 83.0228% --------- Total Ownership 100.0000% GP - The partnership units for Liberty Property Trust have not been reflected because there is no conversion of units to shares by the general partner.