The 8th annual meeting of National Conference of State Historic Preservation Officers will begin Sunday at the Hotel Washington. Meetings will continue through Wednesday. The group includes public officials working with laws and programs that affect identification, protection and maintenance of historic districts, sites, architectural landmarks and archeological resources.

A panel on area housing prices will be held at noon Monday at the Metropolitan Washington Council of Governments, 1225 Connecticut Ave. NW under the sponsorship of the area chapter of the American Institute of Planner. Speakers will include Bruce Steele of COG and James Harvey, executive director of the Metrolpolitan Washington Planning and Housing Associates. The public is invited to the brown-bag luncheon.

Long & Foster recently opened a branch realty office in the Greenbriar shopping center in the Chantilly area of Fairfax County. James Armstrong is the manager.

A six-story, 65,000 square-foot office building is being built at Lettle River Turnpike and the beltway in Fairfax County. Joseph Della Ratta and John C. Webb are the developers of the structure designed by Berry, Rio & Associates, Della Ratta, Inc., is the builder.

Realty World, a Washington-based national marketing program for independent brokers, now has a home protection service plan available for buyers and sellers of resale houses. American Home Shield is handling the coverage for clients.

Shannon & Luchs says the Shady Grove Shopping Center in Gaithersburg has been sold for $4.4 million to a partnership group headed by David W. Evans and Eugene L. Saenger Jr. It was sold by Zebulon Brodie.

Morissette Realty has opened a two-storey office building at 5803 Rolling Rd., Springfield, Va. The brick structure has 17,000 square feet of space. Interstate Van Lines will be a principal tenant.