As potential home buyers were welcomed with cookies, soft music, and cheerfully decorated rooms, visitors Sunday afternoon toured the Dorr Street Brownstones, a development that aims to revitalize part of Toledo’s central city. The six condominium units were built by a private developer, but after only one unit sold after several years, the building was sold to the Lucas Metropolitan Housing Authority this year. Five remaining available units are for sale, and LMHA held an open house event during the weekend to kick off its efforts to market the homes on Dorr Street near Smead Avenue. The four-bedroom units will sell for about $95,000, he said, and a three-bedroom unit about $90,000. The agency already runs several home ownership programs.