Georgetown Marbary House, 3000 M St. NW, 166 rooms. Local developer Al Wheeler plans to open about Dec. 1 as the first unit in Quality Inns' new Quality Royale luxury hotel group.

2--Meridien Hotel, 24th and M Streets NW, 300 rooms. Meridien, a subsidiary of Air France, has signed a letter of intent to manage the hotel in a mixed-use project to be started next year by the Oliver T. Carr Co.

3--U.S. News Project, 24th and N streets NW, 540 rooms. Omni Hotels will manage the hotel in a major redevelopment of U.S. News and World Report headquarters by Boston Properties Inc.

4--Carr Project, 24th and M streets NW, 400 rooms. Oliver T. Carr Co. is negotiating with a major U.S. operator to run a hotel in an office-condo complex; construction starts next year.

5--Ramada Renaissance, 1143 New Hampshire Ave. NW, 360 rooms. Opening in December or January, this will be the second Ramada Renaissance, a new up-scale operation of Ramada Inns.

6--Fairfax Hotel addition, 2100 Massachusetts Ave. NW, 100-plus rooms in a proposed expansion.

7--Vista International, 15th and M streets NW, 420 Rooms. Construction is under way for the 1983 opening by Vista, U.S. nameplate of Hilton International, overseas clone of Hilton Hotels.

8--Holiday Inn, Thomas Circle; a 75-room addition is on the drawing board.

9--Tudor Hall, 10th Street and Massachusetts Ave. NW, 100 rooms. A rundown apartment house, Tudor Hall is now being converted into a luxury hotel by local developers Coakley and Williams.

10--The Willard Hotel, 14th Street and Pennsylvania Ave. NW, 350 rooms. The Willard finally will reopen in 1983 as a joint venture of the Oliver T. Carr Co., Florida developer Stuart Golding and the Fairmont Hotels Corp. of San Francisco.

11--J. Willard Marriott, 14th Street and E Street NW, 800 rooms. Foundations are going in now for Marriott Corp.'s flagship Washington hotel, part of a complex to be completed in '83 or '84.

12--Metro Center. Oliver T. Carr Co. is considering a major hotel as part of a massive retail and office project covering parts of three blocks atop the Metro Center subway station.

13--Woodies' North Block, H Street between 10th and 11th NW, 800 rooms. Quadrangle Development Corp. plans a "headquarters hotel" facing the D.C. Convention Center as part of a redevelopment of the block north of Woodward & Lothrop's main store.

14--International Developers block, 8th, 9th and I Streets and New York Ave. NW, 500-plus rooms. Washington Developer Giuseppe Cecchi is planning a major convention hotel.

15--Beacon Project, 9th and H Streets NW, 450 rooms. Big Boston developer The Beacon Companies is considering a major hotel on this site.

16--Gallery Place, 6th, 7th, F and G Streets NW, 600 rooms. The Redevelopment Land Agency has designated a group of local minority investors to put up a mixed-use project including a hotel atop the Gallery Place subway station just north of The Hecht Co.'s downtown store.

17--Inns of Court, 5th Street and Massachusetts Ave. NW, 300 rooms. Kalian N.V., a Dutch developer, has hired Washington architect A.J. Rappatone to design a hotel and office building here.

18--Swesnik & Blum, New Jersey Avenue and F Street NW. "We're in a 'no comment' stage," said a spokesman for local developer Swesnik & Blum, said to be considering a budget hotel on this site.

19--Westminster Project, 7th and E streets NW, 350 rooms. Westminster Developers, a B.F. Saul Companies subsidiary, will offer plans for this block, including a hotel, to the Pennsylvania Avenue Development Commission in December or January.

20--Portals Tract, 14th Street and Maryland Avenue. The city's Redevelopment Land Authority soon will choose among proposals for hotel-retail-office projects on this big urban renewal tract.