The 1977 Realtor of the Year award in Montgomery County goes to James J. Hall. He is being honored, in the words of the selection committee, for his "contributions of the community, business accomplishments and active participation in local, state and national realtor associations." The award also acknowledged his participation in educational activities of the Montgomery County Board of Realtors. Hall founded his own firm in 1969. He now employs 32 agents in offices in Rockville and Silver Spring.

Sen. John G. Tower (R-Tex.) will deliver the keynote address during the American Land Development Association's national conference on recreation, resort and community development, Sept. 18-21, in Boca Raton, Fla.

The Northern Virginia Board of Realtors will offer an all-day seminar on developing and acquiring income producing real estate o Sept. 15, at the Ramada Inn in Falls Church, starting at 9:30 a.m. The instructor will be Richard H. Swesnik, chairman of the Swesnik and Blum Companies.

John R. Mauren Jr. has joined Walker & Dunlop, Washington realtor and mortgage banker, as a sales representative in the firm's commercial real estate department.

Kenneth E. Guard, of Better Homes Realty, Inc. of Arlington, will speak on the tax aspects of real estate at a Sept. 19 meeting of the Dunn Loring Improvement Association at the Dunn Loring Methodist Church in Merrifield.

Billie D. Landbeck of Aberdeen has been selected as president-elect of the Maryland Association of Realtors. She is the owner of Landbeck and Co., realtors, and currently serves as first vice president of the association.

Attorney Peter E. Kaplan has become senior director of the management services department of the Mortgage Bankers Association.

The Suburban Maryland Home Builders Association will hold its membership meeting Sept. 15 at the Indian Spring Country Club in Silver Spring. The guest speaker will be David E. Stahl, executive vice president of NAHB.