Fifty-one low-income residents of a downtown Spokane building face an uncertain future as a company considers converting the building into a high-tech, environmentally friendly factory. BlueRay Technologies Inc., of Valencia, Calif., has made a deposit on the three-story Commercial Building, 1115 W. First Ave., as a potential site for a $12 million plant to manufacture next-generation DVDs. But the company hasn't decided whether to close the deal on the historic building, which sits adjacent to the Otis Hotel in an area of downtown once well-known for prostitution and skid-row housing.