If you've been on 17th Street NW, just north of K, you've probably noticed that the residence building of the YWCA is being razed. The site will be used as a 40-car parking lot for several years. The YWCA closed its residence because it was not paying its way. The John W. Akridge Co. plans to buy the whole site and to put up an office building. The transaction, for which contract arrangements were made last year, will bring the YWCA a record price of $375 a square foot. The YWCA is reported to be ready to buy a site at 9th and G NW for a new building.

The Akridge Co. has acquired the 14,927-square-foot site at the southwest corner of Vermont and L streets NW for slightly less than $200 a square foot. Several small buildings will be razed on the site that includes a corner parking lot. Akridge, whose firm also is completing a big building around the corner at 15th and K, said that construction on the new building will begin this spring.

Tenants in the 167 apartments in the Ordway Gardens complex just east of Connecticut Avenue NW, between Ordway and Porter streets, have been notified that the B. F. Saul Co., the managing agent, that an offer of $2.6 million has been made for the apartments by a potential, unnamed buyer. The benant association has 90 days to match the offer. A spokeswoman said the tenants are considering buying the property and converting it to condominium or co-op ownership.

Realtor Edward J. Walsh writes that he and his wife, Rita, ate at a restaurant in Dover, Del., where the use of a certain credit card results in a credit of 2 percent (of money spent and so charged) to a person's account in a Delaware savings and loan association. "It may be an old idea but it was new to us," Walsh said.