Exhibit 21
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION 11 COMMERCE DRIVE ASSOCIATES L.L.C. NJ 12 SKYLINE ASSOCIATES L.L.C. NY 120 PASSAIC STREET LLC NJ 1717 REALTY ASSOCIATES L.L.C. NJ 20 COMMERCE DRIVE ASSOCIATES L.L.C. NJ 300 TICE REALTY ASSOCIATES L.L.C. NJ 300 HORIZON ROAD REALTY L.L.C. NJ 400 PRINCETON ASSOCIATES L.L.C. NJ 250 JOHNSON ROAD REALTY L.L.C. NJ 400 RELLA REALTY ASSOCIATES L.L.C. NY 500 COLUMBIA TURNPIKE ASSOCIATES L.L.C. NJ 600 PARSIPPANY ASSOCIATES L.L.C. NJ 4 GATEHALL REALTY L.L.C. NJ 78 PINSON PARTNERS L.L.C. NJ 795 FOLSOM REALTY ASSOCIATES L.P. CA 9060 EAST VIA LINDA CO., LTD. AZ AIRPORT PROPERTIES ASSOCIATES LLC NJ BMP MOORESTOWN REALTY L.L.C. NJ BMP SOUTH REALTY L.L.C. NJ BRANDEIS BUILDING INVESTORS L.L.C. NE BRANDEIS BUILDING INVESTORS, L.P. DE BRIDGE PLAZA ASSOCIATES L.L.C. NJ
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION C.W. ASSOCIATES L.L.C. NJ CAL-HARBOR II & III URBAN RENEWAL ASSOCIATES L.P. NJ CAL-HARBOR IV URBAN RENEWAL ASSOCIATES L.P. NJ CAL-HARBOR NO. PIER URBAN RENEWAL ASSOCIATES L.P. NJ CAL-HARBOR SO. PIER URBAN RENEWAL ASSOCIATES L.P. NJ CAL-HARBOR V LEASING ASSOCIATES L.L.C. NJ CAL-HARBOR V URBAN RENEWAL ASSOCIATES L.P. NJ CAL-HARBOR VI URBAN RENEWAL ASSOCIATES L.P. NJ CAL-HARBOR VII LEASING ASSOCIATES L.L.C. NJ CAL-HARBOR VII URBAN RENEWAL ASSOCIATES L.P. NJ CAL-TREE REALTY ASSOCIATES L.P. PA CALI AIRPORT REALTY ASSOCIATES L.P. PA CALI HARBORSIDE (FEE) ASSOCIATES L.P. NJ CALI HARBORSIDE PLAZA I (FEE) ASSOCIATES L.P. NJ CALI PENNSYLVANIA REALTY ASSOCIATES L.P. PA CALI PROPERTY HOLDINGS I, L.P. DE CALI PROPERTY HOLDINGS II, L.P. DE CALI PROPERTY HOLDINGS III, L.P. DE CALI PROPERTY HOLDINGS IV, L.P. DE CALI PROPERTY HOLDINGS IX, L.P. MD CALI PROPERTY HOLDINGS V, L.P. DE CALI PROPERTY HOLDINGS VI, L.P. DE CALI PROPERTY HOLDINGS VII, L.P. DE CALI PROPERTY HOLDINGS VIII, L.P. DE CALI PROPERTY HOLDINGS X, L.P. DE
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION CENTURY PLAZA ASSOCIATES L.L.C. NJ COLLEGE ROAD REALTY L.L.C. NJ COMMERCENTER REALTY ASSOCIATES L.L.C. NJ COMMERCENTER REALTY ASSOCIATES L.P. NJ COMMON MESSAGING EXCHANGE, INC. NJ CROSS WESTCHESTER REALTY ASSOCIATES L.L.C. NY D.B.C. REALTY L.L.C. NJ ELMSFORD REALTY ASSOCIATES L.L.C. NY FIVE SENTRY REALTY ASSOCIATES L.P. PA GROVE STREET ASSOCIATES OF JERSEY CITY LIMITED PARTNERSHIP NJ HARBORSIDE HOSPITALITY CORP. NJ HORIZON CENTER REALTY ASSOCIATES L.L.C. NJ HORIZON CENTER REALTY ASSOCIATES L.P. NJ HORIZON CENTER REALTY L.L.C. NJ JUMPING BROOK REALTY ASSOCIATES L.L.C. NJ JUMPING BROOK REALTY ASSOCIATES L.P. NJ KEMBLE-MORRIS, LLC NJ LINWOOD REALTY L.L.C. NJ M-C CALIFORNIA SERVICES, INC. DE M-C CAPITOL ASSOCIATES L.L.C. DE M-C HARSIMUS PARTNERS L.L.C. NJ
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION M-C PENN MANAGEMENT CORP. DE M-C PROPERTIES CO. REALTY L.L.C. NJ M-C ROCKLAND PARTNERS L.P. NY M-C TEXAS MANAGEMENT L.P. TX MACK-CALI ADVANTAGE SERVICES CORPORATION DE MACK-CALI ARIZONA CORPORATION DE MACK-CALI B PROPERTIES, L.L.C. NJ MACK-CALI BEARDSLEY LIMITED PARTNERSHIP AZ MACK-CALI BRIDGEWATER CO., L.P. NJ MACK-CALI BUILDING V ASSOCIATES L.L.C. NJ MACK-CALI CALIFORNIA DEVELOPMENT ASSOCIATES L.P. CA MACK-CALI CALIFORNIA PARTNERS L.P. CA MACK-CALI CAMPUS REALTY L.L.C. NJ MACK-CALI CENTURY III INVESTORS L.L.C. IA MACK-CALI CENTURY III INVESTORS, L.P. DE MACK-CALI CHESTNUT RIDGE, L.L.C. NJ MACK-CALI CW REALTY ASSOCIATES L.L.C. NY MACK-CALI D.C. MANAGEMENT CORP DE MACK-CALI E-COMMERCE, INC. DE MACK-CALI E-COMMERCE L.L.C. DE MACK-CALI EAST LAKEMONT L.L.C. NJ MACK-CALI F PROPERTIES L.P. NJ MACK-CALI GLENDALE LIMITED PARTNERSHIP AZ MACK-CALI METROPOLITAN, LTD. FL MACK-CALI MID-WEST REALTY ASSOCIATES L.L.C. NY MACK-CALI MORRIS REALTY L.L.C. NJ MACK-CALI NORTH HILLS L.L.C. NY
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION MACK-CALI PROPERTIES CO. #3 L.P. NJ MACK-CALI PROPERTIES CO. NO. 11, L.P. NY MACK-CALI PROPERTY TRUST MD MACK-CALI REALTY ACQUISITION CORP. DE MACK-CALI REALTY CONSTRUCTION CORPORATION NJ MACK-CALI REALTY L.P. DE MACK-CALI SERVICES, INC. NJ MACK-CALI SO. WEST REALTY ASSOCIATES L.L.C. NY MACK-CALI STAMFORD REALTY ASSOCIATES, L.P. CT MACK-CALI SUB I, INC. DE MACK-CALI SUB II, INC. DE MACK-CALI SUB III, INC. DE MACK-CALI SUB IV, INC. DE MACK-CALI SUB IX, INC. DE MACK-CALI SUB V, INC. DE MACK-CALI SUB VI, INC. DE MACK-CALI SUB VII, INC. DE MACK-CALI SUB VIII, INC. DE MACK-CALI SUB X, INC. DE MACK-CALI SUB XI, INC. DE MACK-CALI SUB XII, INC. DE MACK-CALI SUB XIII, INC. DE
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION MACK-CALI SUB XIV, INC. DE MACK-CALI SUB XIX, INC. DE MACK-CALI SUB XV, INC. DE MACK-CALI SUB XVI, INC. DE MACK-CALI SUB XVII, INC. DE MACK-CALI SUB XVIII, INC. DE MACK-CALI SUB XX, INC. DE MACK-CALI SUB XXI, INC. DE MACK-CALI SUB XXII, INC. DE MACK-CALI TAXTER ASSOCIATES L.L.C. NY MACK-CALI TEXAS PROPERTY L.P. TX MACK-CALI TRS HOLDING CORPORATION DE MACK-CALI WILLOWBROOK COMPANY L.P. NJ MACK-CALI WOODBRIDGE II L.P. NJ MACK-CALI WP REALTY ASSOCIATES L.L.C. NY MACK-CALI-R COMPANY NO. 1 L.P. NJ MAIN-MARTINE MAINTENANCE CORP. NY MANHASSET ASSOCIATES L.L.C. NY MARTIN AVENUE REALTY ASSOCIATES L.L.C. NY MC-CAP L.L.C. DE MC-SJP MORRIS V REALTY L.L.C. NJ MC-SJP MORRIS VI REALTY L.L.C. NJ MID-WEST MAINTENANCE CORP. NY MID-WESTCHESTER REALTY ASSOCIATES L.L.C. NY MONMOUTH/ATLANTIC REALTY ASSOCIATES L.L.C. NJ MONMOUTH/ATLANTIC REALTY ASSOCIATES L.P. NJ MOORESTOWN REALTY ASSOCIATES L.L.C. NJ
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION MORRIS V PARTNERS L.L.C. NJ MORRIS VI PARTNERS L.L.C. NJ MORRISTOWN TEN NJ MOUNT AIRY REALTY ASSOCIATES L.L.C. NJ MOUNT AIRY REALTY ASSOCIATES L.P. NJ MOUNTAINVIEW REALTY L.L.C. NJ OFFICE ASSOCIATES L.L.C. NJ ONE SYLVAN REALTY, L.L.C. NJ PARSIPPANY CAMPUS REALTY ASSOCIATES L.L.C. NJ PHELAN REALTY ASSOCIATES L.P. CA PLAZA X LEASING ASSOCIATES L.L.C. NJ PLAZA X REALTY L.L.C. NJ PLAZA X URBAN RENEWAL ASSOCIATES L.L.C. NJ PRINCETON CORPORATE CENTER REALTY ASSOCIATES L.L.C. NJ PRINCETON OVERLOOK REALTY L.L.C. NJ ROSELAND II L.L.C. NJ ROSELAND OWNERS ASSOCIATES L.L.C. NJ SHELTON REALTY ASSOCIATES L.P. CT SIX COMMERCE DRIVE ASSOCIATES L.L.C. NJ SKYLINE REALTY L.L.C. NY
STATE OF INCORPORATION SUBSIDIARY OR ORGANIZATION SO. WESTCHESTER REALTY ASSOCIATES L.L.C. NY SOUTH-WEST MAINTENANCE CORP. NY STEVENS AIRPORT REALTY ASSOCIATES L.P. PA SYLVAN/CAMPUS REALTY ASSOCIATES L.L.C. NJ TALLEY MAINTENANCE CORP. NY TALLEYRAND REALTY ASSOCIATES L.L.C. NY TENBY CHASE APARTMENTS L.L.C. NJ THE GROVE STREET URBAN RENEWAL CORP. NJ THE HORIZON CENTER PROPERTY OWNERS ASSOCIATION, INC. NJ TRADEMATRIX COMMUNICATIONS, INC. DE U.S. UTILIPRO SOLUTIONS L.L.C. DE UTILIPRO SOLUTIONS, INC. NJ VAUGHN PARTNERS L.L.C. NJ VAUGHN PRINCETON ASSOCIATES L.L.C. NJ VAUGHN PRINCETON ASSOCIATES L.P. NJ WEST-AVE. MAINTENANCE CORP. CT WESTAGE REALTY L.L.C. NY WHITE PLAINS REALTY ASSOCIATES L.L.C. NY