Over in the sylvan, rural area of Hedgesville, W. Va., Ray S. Johnston and his partners have been attracting vacation home and lot buyers to their Potomac Valley Properties' development called The Woods. Johnson said the other day that Labor Day weekend traffic was heavy and that 10 buyers were signed up. So far this year, 85 homes have been sold. "All our principals live on our development, across the road from The Woods, and we are here seven days a week," said Johnson, a former school teacher who studied at Oxford. In the 1970s he and his partners have bought more than 8,000 acres and participated in the development of nearly 30 subdivisions. The Woods includes lots for 400 vacation homes on 500 acres and it adjoins the 27,000-acre Sleepy Creek state forest.

Teachers Insurance & Annuity Association of America recently sold an apartment building at 1230 13th St. NW for $900,000 to J.A.M. Associates Limited Partnership. Jerome Golub is one of the partners in the new ownership . . . Mr. and Mrs. J. S. Rutkowsky sold an apartment building at 1835 16th St. NW for $130,000 to Troy L. Mashburn.

Roy Wheeler Realty Co., Charlottesville, Va., which has a jazzy letterhead stressing historic Virginia, reports that Art Garfunkel of Simon-Garfunkel fame, has sold historic Edgewood in Albermarle County and gone off to California. The 248-acre property includes a classic manor house built in 1911 by G. Barclay Rives, a former U.S. Ambassador. The asking price was listed as $450,00 but the selling price to a former Washington attorney was probably a smidgen less.

Everyone is aware of the tennis boom and how strategic it has become in relation to the development of residential properties, probably more so today than a swimming pool or adjacency to a golf course. But now the Los Angeles Times reports that corporate tennis courts are becoming an employee amenity. Court builders of N. Hollywood has completed two tennis courts and one paddle tennis court for Nissan Motor Corp. USA near the Harbor Freeway in Carson, Calif. Nissan's nearby office buildings house 1,000 employees who will have court privileges. Of course, the downtown Federal Reserve Board has its own court here.

Youngish David Dorros and John Yokley recently completed a four-bedroom, two-bath vacation house in Harbor Woods in N. Ocean City. The site overlooks the bay. The two University of Maryland engineering students changed the window heights while they were framing the house in order to get the best view and breezes. Incidentally, the price is $45,000.

Two veteran realtors who have no business connection with Sol Wolberg or Shannon & Luchs reported with genuine exuberance their approval of the selection of veteran Wolberg, a maven in downtown commercial real estate, as Realtor of the Year by the Washington Board of Realtors. As a matter of fact, the 80-ish Wolberg was not among the formal nominees but a ringing nomination speech by Henry E. Nichols carried the day and the selection for Wolberg.

Seventeen years ago one Paul Herron stepped out of the real estate pages of this newspaper to become the first editor of Potomac (now The Washington Post Magazine). And in that summer of 1960 Herron and his wife bought an existing single family house on a corner lot in Kensington. today their yard, Willard Scott and Gordon Barnes willing, will be the scene of a double wedding reception for their two daughters. One is being wed today; the other recently. One further point, Herron (now editor of the Mortgage Banker magazine in an office across the street from The Post) will become a member of the 20-year club of this newspaper, even though he has been gone six years. An "overlook" mistake is being corrected so the former Navy flier will soon pick up his pin, a few drinks and some food - and accept a belated "well done" from the publisher.