# 427 West 21st Street, Manhattan

Co-op · 5 units · built c. 1853 · Block 719, Lot 25.

On Umarelli: https://umarelli.org/nyc/1007190025/427-west-21-street

More construction in Chelsea: https://umarelli.org/nyc/manhattan/chelsea.md

Every lot on block 719: https://umarelli.org/nyc/manhattan/719.md

## Building permits

- Alteration, filed Mar 14, 2025, estimated cost $87K, described as “Interior renovation of exist first floor apt. no change to use/egress/occupancy/yards/bulk/energy efficiency/accessibility/fire resistance ratings proposed under this application”

## Property taxes

- Assessment: $1,086,300
- 2026–27 tax: $68,157
- Market value (city estimate): $2,414,000
- Taxable value: $547,931
- Assessed land: $342,450
- Assessed improvements: $743,850

## Zoning

R7B: floor area ratio 2.27 built, 3.00 allowed by base zoning.

## Recent sales

- Nov 25, 2024: $1,325,000

Open-market sales since 2016, from the Department of Finance’s sales files.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.

## Landmarks

Part of Chelsea Historic District (Historic District). 8 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