1 EXHIBIT 21 ANNUAL REPORT FORM 10-K, COMMISSION FILE NUMBER 000-26572 NHP INCORPORATED SUBSIDIARIES Subsidiaries of NHP Place of Percent of Incorporated (Parent and Registrant) Incorporation Voting Power - ------------------------------------ ------------- ------------ NHP Management Company . . . . . . . . . . . . . . . . . . . . . . . . . . Washington, DC . . . . . 100 NHP Texas Management Company . . . . . . . . . . . . . . . . . . . . . Texas . . . . . . . . . 100 NHP Puerto Rico Management Company . . . . . . . . . . . . . . . . . . Delaware . . . . . . . . 100 NHP-HG Six, Inc. . . . . . . . . . . . . . . . . . . . . . . . . . . . Virginia . . . . . . . . 100 Congress Management Company Limited Partnership . . . . . . . . . . Massachusetts . . . . . 100 Property Services Group, Inc. . . . . . . . . . . . . . . . . . . . . . . . Washington, DC . . . . . 100 The Risk Specialist Group, Inc. . . . . . . . . . . . . . . . . . . . . . . Washington, DC . . . . . 100 NHP-HG II, Inc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Virginia . . . . . . . . 100 NHP-HDV Three, Inc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Delaware . . . . . . . . 100 Rescorp Realty, Inc. . . . . . . . . . . . . . . . . . . . . . . . . . Illinois . . . . . . . . 100