# 621 Columbus Avenue, Manhattan

Co-op · 180 units · built 1970 · Block 1204, Lot 1.

On Umarelli: https://umarelli.org/nyc/1012040001/621-columbus-avenue

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 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.

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