# 454 West 20th Street, Manhattan

Co-op · 4 units · built c. 1853 · Block 717, Lot 71.

On Umarelli: https://umarelli.org/nyc/1007170071/454-west-20-street

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

Every lot on block 717: https://umarelli.org/nyc/manhattan/717.md

## Building permits

No building permits on file for this lot.

## Property taxes

- Assessment: $1,467,000
- 2026–27 tax: $60,739
- Market value (city estimate): $3,260,000
- Taxable value: $488,293
- Assessed land: $196,200
- Assessed improvements: $1,270,800

## Zoning

R7B: floor area ratio 2.29 built, 3.00 allowed by base zoning.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NAVD88).

## 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