# 23 West 90th Street, Manhattan Apartment building · 96 units · built c. 1910 · Block 1204, Lot 21. On Umarelli: https://umarelli.org/nyc/1012040021/23-west-90-street More construction in Upper West Side: https://umarelli.org/nyc/manhattan/upper-west-side.md Every lot on block 1204: https://umarelli.org/nyc/manhattan/1204.md ## Building permits - Alteration, filed Sep 22, 2025, estimated cost $26K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $22K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $11K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $33K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $24K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $10K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $15K, described as “Installation of temporary chain link fence as per plans. Chain link fence shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $22K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $23K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 22, 2025, estimated cost $22K, described as “Installation of temporary sidewalk shed as per plans. Sidewalk shed shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 12, 2025, estimated cost $5K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 12, 2025, estimated cost $4K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 12, 2025, estimated cost $5K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 12, 2025, estimated cost $5K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 12, 2025, estimated cost $7K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 12, 2025, estimated cost $13K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” - Alteration, filed Sep 12, 2025, estimated cost $5K, described as “Installation of temporary pipe scaffold as per plans. Pipe scaffold shall comply with chapter 33 of the 2022 NYC building code. No change in use, egress or occupancy under this application.” 63 more, older permits are in this building’s full list on the map: https://umarelli.org/nyc/1012040021/23-west-90-street. ## Property taxes - Assessment: $8,210,250 - Market value (city estimate): $18,245,000 - Taxable value: $0 - Assessed land: $2,097,450 - Assessed improvements: $6,112,800 ## Zoning R7-2: floor area ratio 2.64 built, 3.44 allowed by base zoning. ## Flood zone Current FEMA flood map: zone X, minimal flood hazard. ## Landmarks Part of Upper West Side/Central Park West Historic District (Historic District). 21 Landmarks Preservation Commission permits are on file. From New York City and Jersey City public records, refreshed within a day of each release. Sources: https://umarelli.org/sources. Methodology and corrections: https://umarelli.org/methodology