# 450 West 20th Street, Manhattan

Co-op · 4 units · built c. 1855 · Block 717, Lot 69.

On Umarelli: https://umarelli.org/nyc/1007170069/450-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: $1,520,100
- 2026–27 tax: $76,186
- Market value (city estimate): $3,378,000
- Taxable value: $612,474
- Assessed land: $614,250
- Assessed improvements: $905,850

## Zoning

R7B: floor area ratio 2.82 built, 3.00 allowed by base zoning.

## Recent sales

- Jan 21, 2026: $1,195,000
- May 20, 2022: $1,150,000
- Aug 17, 2021: $1,615,000
- Oct 22, 2019: $1,255,000

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 AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NAVD88).

## Landmarks

Part of Chelsea Historic District (Historic District). 5 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