A solid proposal for financing the return of major league baseball to Washington has been laid before Commissioner Bowie Kuhn, the Washington Post has been told.

In New York yesterday, Kuhn said he recently met "at length" with R. Robert Linowes, president of the Washington Board of Trade and said Linowes outlined Washington's readiness to meet all conditions for acquiring the first available big league franchise.

"I reminded Mr. Linowes that proper financing is the beginning point for any franchise bid" Kuhn said. "I also pointed out to him that in virtually every case where both the money and a stadium was available, that city eventually has gotten a franchise."

Kuhn said they had talked in terms of the 1979 scene, with no franchise now available.

At this Washington office, Linowes said, "My talk with Mr. Kuhn was exploratory, but I felt I satisfied him as to the financial stability of our group." Linowes said he would at the proper time disclose the partners in his project.

"I would like to exphasize that I talked with the commissioner not as president of the Washington Board of Trade, but as a lawyer-businessman-fan who happens to be president of the board," Linowes said.

"I am involved," said Linowes, "because I regard a major league team as a most desirable asset for the Washington community and certainly as an important unifying factor for our city."

Linowes said that in due time he would discuss an RFK Stadium contract. "But in view of the many false starts by others who takled stadium deals first, acquiring a team must be our first priority," he said.