621 Columbus Avenue, Manhattan
Co-op · 180 units · built 1970 · Block 1204, Lot 1.
Building permits
- Alteration, filed Aug 6, 2026, estimated cost $658K, described as “Deck patching and roof modifications with related finishes as per plans. No change in use, egress, or occupancy.”
- Alteration, filed Oct 28, 2024, estimated cost $246K, described as “Facade work as per plans filed herewith.”
- Alteration, filed Aug 9, 2024, described as “Installation of suspended scaffold for facade work and/or inspection. Amend #1, added outrigger detail and hoist.”
- Alteration, filed Mar 12, 2022, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed as per plans. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of the NYC building code. Live load 300PSF.”
Property taxes
- Assessment
- $13,225,050
- 2026–27 tax
- $235,090
- Market value (city estimate)
- $29,389,000
- Taxable value
- $0
- Assessed land
- $4,507,200
- Assessed improvements
- $8,717,850
Tax breaks
- Mitchell-Lama exemption, with no end date.
Zoning
C1-9: floor area ratio 8.02 built, 10.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.