EXHIBIT 21

INTERSTATE GENERAL COMPANY L.P.

CONSOLIDATED ENTITIES AND SUBSIDIARIES OF THE REGISTRANT

DECEMBER 31, 1999

At December 31, 1999, the financial statements of the following entities were consolidated with those of the Registrant in the Consolidated Financial Statements incorporated herein:

• American Family Homes, LLC, a Delaware limited liability company
• Caribe Waste Technologies, Inc., a Puerto Rico corporation
• IWT Bridgeport, Inc., a Delaware corporation
• Interstate Acceptance Corporation I, a Delaware corporation
• Interstate General Realty, Inc., a Delaware corporation
• Interstate Waste Technologies, Inc., a Delaware corporation
• Pomfret, LLC, a Delaware limited liability company
• St. Charles Associates Limited Partnership, a Maryland limited partnership
• St. Charles Operating Company, LLC, a Delaware limited liability company

At December 31, 1999, the Registrant and its consolidated entities had the following significant unconsolidated subsidiaries:

• Brandywine Investment Associates Limited Partnership, a Maryland limited partnership
• Chastleton Apartments Associates, a District of Columbia limited partnership
• Coachman's Limited Partnership, a Maryland limited partnership
• Palmer Apartments Associates Limited Partnership, a Maryland limited partnership
• Headen House Associates Limited Partnership, a Maryland limited partnership
• Wakefield Terrace Associates Limited Partnership, a Maryland limited partnership
• Wakefield Third Age Associates Limited Partnership, a Maryland limited partnership