| Public School 9 and Public School 9 Annex ("Public School 111 and Public School 9 Annex") | |
| Location: | 249 (P.S. 9) and 251 (Annex) Sterling Place Brooklyn, New York City |
| Coordinates: | 40.6761°N -73.9697°W |
| Built: | P.S. 9: 1867-68, 1887 Annex: 1895 |
| Architect: | Samuel B. Leonard James W. Naughton |
| Architecture: | P.S. 9: Early Romanesque Annex: Romanesque Revival with Renaissance Revival ornamentation |
| Added: | December 14, 1981 |
| Refnum: | 81000407 |
| Designated Other2 Name: | New York City Landmark |
| Designated Other2 Date: | January 10, 1978 |
| Designated Other2 Abbr: | NYCL |
| Designated Other2 Link: | New York City Landmarks Preservation Commission |
| Designated Other2 Color: |
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Public School 9 and Public School 9 Annex are two historic school buildings located at 227 and 279 Sterling Place, respectively, at Vanderbilt Avenue in the Prospect Heights neighborhood of Brooklyn, New York City.
Public School 9 consists of a central, two-story gabled section flanked by two-story wings. The central section dates to 1867–68 and was designed by Samuel B. Leonard in the Early Romanesque Revival style. The two wings were added in 1887 and were designed by James W. Naughton. The school was originally Public School 9, later becoming Public School 111, and currently M.S. 340 North Star Academy.
Public School 9 Annex was necessitated by the continued population growth of Prospect Heights, which caused overcrowding in the original school.[1] It was designed by James W. Naughton and built in 1895. It is a three-story, H-shaped, brick building crowned by gable dormer windows. The Romanesque Revival building incorporates Renaissance Revival style details.[2] The building has been converted into condominium apartments under the name "P.S. 9".
Both buildings were separately designated New York City Landmarks in 1978, as "Public School 9" and "Public School 9 Annex" and were listed together on the National Register of Historic Places in 1981, as "Public School 111 and Public School 9 Annex"
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