An area commercial landlord has acquired a Frontier Communications facility on Highland Avenue in Middletown for $1.1 million. Stone Point Properties LLC closed on 550 Highland Ave. on Jan. 15, according to town officials. Frontier and its predecessor Southern New England Telephone had used the 40,000-square-foot building, which sits on 8 acres, as a garage work center and as administrative space. Stone Point owns several commercial properties in Middletown, including the Capitol building at 350 Main St., Main Street Market at 366-386 Main St., and 392 Washington Street. The company’s two co-owners did not immediately respond to a request for comment Friday morning about their plans for the property, which is zoned for multifamily or could be expanded for industrial use, according to listing broker Cushman & Wakefield.