18-20 West 89th Street
NB Number: NB 400-1912
Architect: Dennison, Hirons and Darbyshire
Developer/Owner/Builder: Koenig Realty Co.
NYC Landmarks Designation: Historic District
Landmark Designation Report: Upper West Side-Central Park Historical District, Vol. 3
National Register Designation: N/A
Primary Style: Early 20th-Century Functional
Primary Facade: Brick, Ironwork, and Stone
Window Type/Material: Multipane double-hung with transom/Wood
Method of Construction: Mixed; partial steel frame and masonry. Fireproof.
Historic District: Upper West Side - Central Park West HD
Alterations: One story addition onto rear of school to connect it with 17 West 88th Street. 1964: Alt 925-1963. Architect — Switzer & Zegler. Owner — The Franklin School