# 451 West 21st Street, Manhattan

Single family · built c. 1857 · Block 719, Lot 12.

On Umarelli: https://umarelli.org/nyc/1007190012/451-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 Jan 14, 2022, estimated cost $57K, described as “Plumbing Work filed in conjunction with renovation of existing 1 Family Residence. Install Plumbing Fixtures and related piping.”
- Alteration, filed Jan 13, 2022, estimated cost $514K, described as “Renovate Existing 1 Family Residence. Demolish and Construct Interior Partitions, Finishes, Doors, Cabinetry. Interior Renovations at Cellar and Floors 1-4. Install Split A/C System. Window Replacement.”

## Property taxes

- Assessment: $525,720
- 2026–27 tax: $71,180
- Market value (city estimate): $8,762,000
- Taxable value: $358,716
- Assessed land: $176,580
- Assessed improvements: $349,140

## Zoning

R7B: floor area ratio 2.68 built, 3.00 allowed by base zoning.

## Recent sales

- Apr 1, 2021: $5,900,000

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

## Flood zone

Current FEMA flood map: zone X, moderate risk: a 0.2% chance of flooding each year.

## Landmarks

Part of Chelsea Historic District (Historic District). 6 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