Motorists who drive along Chain Bridge Road (Route 123) between Chain Bridge and the George noting a resumption of work on the striking mansion that builder-developer Louis Pomponio started several years ago. Serafina Dickerman of Potomac has the listing on the riverview property that is modeled after the Christopher Wren house in Williamburn - but with many extras, including a ballroom.. She said that the "as is" price is $2.3 million; the property includes more than 6 acres. When finished, the house will be priced at about $3 million. This could be one of the largest homes to be built in this area decades.

The Northen Virginia Board of Realtors reported that dollar volume in January exceeded $65 million, which was nearly $4 million more than for the same month in 1976. Total sales were 1,046 last month, down 15 from the previous year. The inference is that the average sales price has risen to about $65,000 from $61,000 in one year.

Thirty-four new condominium apartments are being created in a new building at 1318 22d St. NW., Holland & Lyons has named the new project TGeorgetowne Overlook. All the apartments, most of which are one-bedrooms ranging from $53,000, have fireplaces and exposed brick walls. Top floor dwellings in the five-story structure will have sky-lights. Summer occupancy is planned. Holland & Lyons, which now has its office nearby in the DuPont Circle area, is also involved in converted condominiums, including Century' House, Riggs Place, Corcoran Mews and 4701 Connecticut.

Naomi Laughlin, long been re-elected president of the Maryland chapter of the Farm and Land Institute, which broke precedent to name a current president as Realtor of the Year. Mrs. Laughlin and husband, Cy, a veterninarian, live on a small spread on upper New Hampshire Avenue . . . Over in Virginia, Angela Shafran started out in real estate in 1951 by working as executive assistant to husband George at Better Homes Realty. She has continued to be active in the firm's affairs. But recently she has found herself working for son Thomas, who now is vice president and principal broker. Her new assignment is director of training with emphasis on recruiting young men and women interested in realty selling careers. She also co-ordinates a food buying program for senior citizens as a volunteer activity with the Arlington Red Cross.

-Francis C. Steinbauer, newly named as executive vice president and general manager of Gulf Reston, got his degree in civil engineering from the University of Maryland in 1959. His first job was with Federal Aviation Administration in the construction of Dulles Airport, which has that generally non-access forad that splits Reston. After his airport work was completed Steinbaurer joined Reston as a design engineer and kept moving up the ladder. He and his family live in Reston, where he also serves as president of the home-owners association.