It was about this time when he began also designing commercial buildings, shopping centers, and synagogues – and expanding into Nassau and Suffolk Counties.
[5][6] In 1952, he designed 515 homes for the 120-acre (49 ha) Southwood-at-Syosset housing development, off South Oyster Bay Road in Syosset, New York.
[7] In 1953, Salkowitz designed the 20-acre (8.1 ha) Lake Success Shopping Center in North New Hyde Park, New York; it was completed in 1956.
[10] Salkowitz, along with his partner, Carl Heimberger, designed the North Shore Towers in Glen Oaks, Queens, in 1971.
[1][14] Salkowitz was Jewish and was a member of Temple Beth Sholom in East Hills, New York, which he designed.