The Veterans Administration has eliminated its requirement for intermediate construction inspections of new homes offered for VA financing where the builders participate in insured waranty programs, such as the Home Owners Warranty plan of the National Association of Home Builders. Only final inspections will be required.

The Consumer Real Estate Center will give a seminar in "How to Sell Your Home -- With or Without a Broker," Feb. 17 at the Key Bridge Marriott Hotel. For information, call 649-6666.

Appraiser Alfred Jarchow reports that resale house prices increased by about 16 percent in Montgomery County during 1978, 2 percent below the record year of 1972.

A course on remodeling older houses will be given on the Alexandria campus of Northern Virginia Community College, Beginning Tuesday evening. For information, call 323-4240.

Virginia Homeowners Inc., a Springfield firm that helps homeowners sell houses, has opened a branch office in Arlington. For a set fee, the firm handles administrative aspects of the sale for the seller and helps with advertising.

The five-story Carolyn Building is nearing completing at Rte. I-66 and Chain Bridge Road in Fairfax city. Carol Square Corp. is the developer of the building, which is 80 percent leased.

Five 18th and 19th century houses in Old Town Alexandria will be open to the public today as part of a monthlong celebration of George Washington's birthday. The tour begins at 11 a.m. Tea will be served at the boyhood home of Robert E. Lee, 607 Oronoco St. For information, call 549-0205.

The Asphalt Roofing Manufacturers Association has moved from New York to a building at 1800 Massachusetts Ave. NW.

The American Public Health Association has leased 32,684 square feet in a new building being completed by developer John Akridge at 1015 15th St. NW.