How are resale houses being financed? An analysis of 959 sales in the multiple listing service of the Montgomery County Board of Realtors during May showed a preponderance of conventional loans - 653. Others included 119 VA home loans, 60 FHA loans, 55 existing loan assumptions by buyers, 22 loans from sellers themselves - and, somewhat surprisingly in these days of high housing prices, 47 all-cash transactions.

If you have any doubt that housing prices are high here, statistics from the Federal Home Loan Bank Board for March, April and May show that new houses averaged $74,500, in comparison to the national average of $60,100 and that the average price of existing houses was $74,000 in this area and $51,400 across the nation. Long & Foster Real Estate Inc. gives a comparison of house cost figures to people coming into this area to ease the shock. Average new house prices are lowest in the Miami area ($42,900) and resale prices lowest in St. Louis ($38,400). Only the San Diego, San Francisco and Los Angeles areas have average prices higher than Washington's.

Property management executive Lillian Bowen gets a substantial mention in a new book by realty professional Margaret Crispin, now living in Colorado Springs, Colo. The book, "How Any Women Can Get Rich Fast in Real Estate," is published by Sheed, Andrews, McMeel and sells for $9.95. The property management career of Bowen, who has been in the business more than 40 years and now heads Herbert Harvey Inc., is capsuled on two pages. Bowen laughs about being "rich." She has owned her own house in Arlington for 40 years and used it as collateral to finance her daughter's education and marriage some years ago.

Montgomery County realtor Naomi Laughlin, who specializes in farm and land brokerage, has a listing on 77-acre Holly Stone horse farm in Fauquier County, Va. The main house, built of stone, has front and back stairways. The property, offered at $595,000, has been home in recent years to long-ailing realtor Routh Robbins, her daughter and son-in-law, Barbara and Carl Gibbs, and their five children. They are moving to Loveland, Colo., a high-dry area.

SHORTLY: Look for the small, now-vacant apartment building at 1495 Newton St. NW, recently sold for $155,000 to M-HMP Joint Venture, to be rehabilitated and converted to condominium ownership.