A seminar on historic preservation and its implications for the home building industry will be held Sept. 25 at the Bethesda Marriott by the Suburban Maryland Home Builders Association. Jay Wohlfarth will moderate the session beginning at 4:30 p.m., just prior to a dinner meeting of SMHBA at which Maryland U. basketball coach Lefty Driesell will be the speaker.

The Christopher Companies, which build homes in Northern Virginia and in the Virginia Beach area, has moved to an office at 8290 Old Courthouse Rd., Vienna. Fred A. Kober is president of the firm.

Arthur Rubloff & Co. of Washington announced that a $3.1 million lease for 28,300 square feet of space has been made with Automated Services Group Inc. to go into the new six-story Spring Plaza South building at 700 Roeder Rd., Silver Spring. H. G. Smithy Co. represented the owners of the building.

A new town house community called Country Creek has been started by the Scarborough Corp. on a site near the intersection of Sutton Road and Blake Lane, north of Rte. 66 in the Vienna area. Models will be opened later this month. Prices will range from about $95,000.

The third section of town houses at Bristoe Station in Manassas are now being marketed by the J. Robert Co. Windson Development Inc. of Vienna is the builder. Prices are in a range starting under $50,000.

Julien J. Studley Inc. announced that Systems Consultants Inc. has leased nearly 30,000 square feet in a new building at 1050 Thomas Jefferson St. N.W. and that Dynamic Systems Inc. is leasing 20,000 square feet at 8200 Greensboro Rd. in Tysons Corner.

FSI Financial Group Inc. announced that it arranged $9.5 million of construction and permanent financing for a 55-unit town house development in Reston.

Chateau Realty, a Century 21 real estate franchise office in Vienna, reported a volume of $9.9 million in residential sales and listings in the first six months of this year.

The Washington Board of Realtors will hold its annual dinner-dance and award ceremonies Friday, Sept. 26, at the Mayflower. The date was incorrectly listed last week in this column.