Cecil M. Boyer Jr. has been elected president of the 700-member Northern Virginia Builders Association. Other officers are Leonard Abel, Robert Koury, Randolph Williams and Sidney Dewberry.

Architect Giora Hadar will moderate a four-season course on housing design starting Jan. 16 at the Jewish Community Center in Rockville. Information is available at 881-0100.

JaLaur Corp. has opened Spring Ridge Farm, a subdivision of houses in Damascus. Mimi Selig Homes Inc. is handling sales of the dwellings, which are priced from about $72,000.

Nyman & Associates is developing Old Fort Hills, a subdivision of 14 detached houses priced in the $70,000s.

RE/MAX East Suburban Properties, headed by Frank Cummings, has been opened in Bowie Plaza.

Routh Robbins Real Estate Corp. has opened a new, relocated residential sales office at 13330 Gordon Blvd., Woodbridge.

The Montgomery County Planning Board will conduct a public work session on the preliminary draft master plan for the 23,445-acre Poolesville area starting at 8 p.m. Jan. 17 at Poolesville High School.

Jack Krogmann has been named manager of the new Kensington office of Flaherty Inc. Realtors.

Paul Foche has been named director of inspection services of the Home Owners Warranty Corp. of Northern Virginia. The HOW program offers a 10-year protection plan against defects in material and workmanship from member builders to new-home buyers.

The Fredericksburg (Va.) Board of Realtors has installed Richard Collier as president. Other officers are Hunter Greenlaw, Marge Johnson, Arthur Chiavaroli and Pat Feindt.

Marvin Weissberg, developer of the Flour Mill high-rise condominium near Key Bridge in Georgetown, said that 25 of the 55 luxury apartments have been sold in the building. It is expected to be ready for occupancy this spring.