Sims Construction Co. has begun building a complex of eight colonial-style, $130,000 town houses in Falls Church called Governor's Square. The project is at Great Falls and Little Falls streets near Cherry Hill Farm Park. Michael O'Malley of Barkley Pierce Associates designed the three-story houses, which are scheduled to be completed next summer.

The Frederick H. Denston Co. of Washington was the broker in the recent sale of the 1,095-unit Colonial Village garden apartment complex in Arlington County to CV, Inc., a subsidiary of Mobil Corp. Veteran builder-developer Gustave Ring heads Colonial Village Apartments, Inc., the seller. The project reportedly sold for about $17.5 million.

The fall lecture series of Preservation Resource Group, Inc., will begin Nov. 1 with a lecture on wood and will continue for five Tuesdays beginning at 6 p.m. at the Key Bridge Marriott. For information, call 323-1407.

The 38th annual building products executive conference sponsored by McGraw-Hill Information Systems Co. will be held Thursday at the Capital Hilton. Speakers at the day-long sessions will include government, congressional and industry leaders. Six hundred persons are expected to attend.

Stanley Martin Communities, Inc., and affiliated companies has relocated offices to larger quarters at 1717 Elton Rd., Silver Spring in the area of the Beltway and New Hampshire Avenue.

Grey Realty has moved its office to a storefront location in a shopping center at 2442 N. Harrison St., Arlington.

Macklin-Hansen Real Estate Corp. has opened a branch office in the Cary building at 8136 Old Keene Mill Rd., Springfield.

The written licensure examination for real estate brokers and agents will be held Tuesday at 8:30 a.m. at 415 N. Jersey Ave. NW. by the Office of Licenses and Permits of the District.