Oil-stained oak floors, custom stair railings and a wall safe in the large master bedroom are a few of the features in a $695,000 federal-styled house recently completed on one of the last remaining buildable lots in the Spring Valley section of Northwest Washington.

Charles Covell, who heads his own custom building firm that has done several large homes in the District in recent years, bought the quarter-acre site for the house at 4814 Woodway Lane from Dr. and Mrs. Paul Shorb whose own home is on a large property along nearby 49th Street and Glenbrook Road.

Architect Michael Patterson designed the house to have 2,258 square feet of living area on both the first and second floors. In addition to a library, living room, morning room, kitchen and dining room, the first floor has a great room measuring 20-by-30 feet. The second floor has a master bedroom with a sitting room and whirlpool tub, plus three other bedrooms.

The two-car garage is in the basement, which also has a maid's room and sitting room. There's also a pub room, bar, wine celelar and utility area.

A hand-cut stone fireplace is a feature of the 26-by-15 foot colonial pub room in the basement. A built-in mural over that fireplace is a painting of the 18th century Georgetown waterfront.

Bettie Beattie of Stuart & Maury Inc. is handling the sale of the house that is distinguished on the exterior by two federal chimneys, three dormer windows and a half-circle brick niche under the front entrance build-up. The house, which has a built-in burglar control system, is open for viewing on Saturday and Sunday afternoons