Designated June 20, 2000
The building at 21 Tier Street was constructed on City Island, the Bronx, in 1896 as a summer home for the politician and real estate investor Lawrence Delmour and his wife Mary Delmour. The building was designed by Samuel H. Booth, a local builder whose office was on City Island. The structure is a rare surviving example of the Shingle style, an important American architectural style that was never popular in New York City and has become even rarer as former suburban areas and seaside resorts have been redeveloped. Facing the Eastchester Bay, the house at 21 Tier Street is a quintessential Shingle style waterfront residence. It features shingled surfaces, horizontal lines interrupted by the towers of the building and porch, interlocking geometrical forms, and an expansive porch, all elements of the Shingle style. The house is still used as a single-family residence.