The legislative committee of the National Association of Realtors will hold its annual conference here March 31 at the Capital Hilton hotel. Speakers will include Carter campaign chief Robert Strauss, Rep. Barber Conable (R-N.Y.), ranking minority member on the House Ways and Means Committee, and Jay Janis, chairman of the Federal Home Loan Bank Board. c

Pulte Home Corp. has opened a new group of town houses in Lake Ridge, a community next to the Occoquan reservoir in Woodbridge. The firm said buyers have made deposits on 25 of the houses, which are priced from $60,000.

Sen. Harrison Williams (D-N.J.) received the Nathaniel S. Keith award this week from the National Housing Conference Inc. for service on behalf of housing and community development.

The Washington office of Julien J. Studley Inc., a real estate brokerage and consulting firm, has moved to larger quarters at 1333 New Hampshire Ave. NW. Based in New York, the firm has had offices in downtown Washington since 1965. Peter Speier is senior vice president and manager here.

The Annandale Professional Building at 7023 Little River Turnpike was sold recently for $1.3 million. The seven-year-old building was bought by W.B. Allen, a trustee for a group, from 7023 Partnership.

Michael B. Gaetjens of Adelaide, Australia, a member of a family-owned realty firm there, recently visited several of the 32 offices of Hugh T. Peck Properties Inc. here to observe sales, marketing, training and management procedures. He is touring U.S. cities as part of an exchange program sponsored by the International Real Estate Federation.

Heritage Realty Inc., based in Annapolis, has acquired Century 21/Chesapeake Bay Realty in Edgewater, Md., from Terry C. Riley. The new Heritage office, the firm's 12th in eastern Maryland, is managed by Leon Gunn.