The Trammell Crow Co. has announced the opening of Jefferson Court, a 296,000-square-foot office complex located at 1025 Thomas Jefferson St. NW in Georgetown. The building, which is the company's first major downtown development, is now 75 percent leased.

Designed by Skidmore, Owings & Merrill and built by Sigal Construction Corp., the building has two interior courtyards and a private health club for building tenants.

Recent leases include: Golembe Associates Inc., a banking and economic consulting firm, 17,047 square feet; the Washington office of LTV Corp., 14,000 square feet; Schwalb, Donnenfeld, Bray & Silbert, 13,850 square feet, and Rudd International, a Washington-based furniture manufacturer, 14,475 square feet.

Other recent developments in commercial realty in the Washington metropolitan area:

The Technical Education Center, a division of the Human Resources Research Organization, has leased 11,337 square feet at 1400 I St. NW. Rubloff was the agent.

ORI Inc., a defense and aerospace consulting firm, has leased 4,380 square feet in Metroplex II at 8201 Corporate Dr., Landover. Rubloff handled the transaction.

The National District Attorneys Association has leased 7,895 square feet at 1033 N. Fairfax St. in Alexandria. Shannon & Luchs represented the association.

AT&T Communications has leased 10,600 square feet at 9401 Lee Hwy. in Fairfax. Shannon & Luchs was the agent.

The Life Insurance Co. of North America has leased 5,000 square feet at 5536 Wisconsin Ave. in Chevy Chase. Shannon & Luchs handled the transaction.

Norrell Services, a personnel placement division of Norrell Corp., has leased 1,262 square feet at 2000 Pennsylvania Ave. NW. Rubloff was the agent.

Shearson Lehman/American Express has signed a $571,000 lease for 7,082 square feet at 7315 Wisconsin Ave. NW. Coldwell Banker handled the transaction.

Licom Inc., a telecommunications firm, has leased 9,582 square feet at 400 Herndon Pkwy. in Herndon for $465,000. Coldwell Banker was the agent.