President and Mrs. Gerald R. Ford yesterday sold their four-bedroom Alexandria house for $137,000 - the price they asked for it in December, according to White House aid Bob Barrett.

Barratt said last night that the name of the new owner, who had not been notified that the Fords signed he contract, will be released this morning at a press conference in the Washington office of Previews, Inc., real-estate marketing organization. Susan Goldwater, head of Previews' Washington office, handled the sale.

The Fords bought the colonial-style brick house, located at 514 Crown-view Drive in Alexandria's Seminary Hills community, for $34,000 in 1955 while Ford was a Michigan Congressman. It stayed their home until he became President in 1974.

Barrett said the Fords will reside temporarily in Palm Springs, Calif., when the President leaves office later his month, but he said they have made no definite decision on a permanent home.

The Fords rented the house fot the past two years to LaVerne Rosenthal, an executive assistant to a member of the National Transportation Safety Board, for about $800 a month. The house has a heated swimming pool in the back yard and a special room used by the Secret which was converted from a garage.

Goldwater could not be reached for comment last night. She is thewife of Rep. Barry Goldwater Jr. (R-Calif.).