# 447 West 24th Street, Manhattan

Two-family · built c. 1850 · Block 722, Lot 12.

On Umarelli: https://umarelli.org/nyc/1007220012/447-west-24-street

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

Every lot on block 722: https://umarelli.org/nyc/manhattan/722.md

## Building permits

- Alteration, filed Jul 13, 2026, estimated cost $1.0M, described as “Modification of HVAC sytsem and installation ac units.”
- Alteration, filed Jun 4, 2026, estimated cost $59K, described as “Installation of sprinkler system.”
- Alteration, filed Jun 4, 2026, estimated cost $260K, described as “Modification and installation of plumbing fixtures.”
- Alteration, filed Jun 2, 2026, estimated cost $1.0M, described as “Interior renovation of existing 2 family dwelling, replacement of rear windows and rear porch. No change in use, egress or occupancy.”
- Alteration, filed Jun 1, 2026, estimated cost $380K, described as “Structural work to include new dunnage on roof, reinforce existing floor framing for leveling & repair purposes, modify existing rear extension facade opening at first floor, new rear yard outdoor deck structure.”

## Property taxes

- Assessment: $339,900
- 2026–27 tax: $40,195
- Market value (city estimate): $5,665,000
- Taxable value: $202,566
- Assessed land: $147,960
- Assessed improvements: $191,940

## Zoning

R7B: floor area ratio 1.63 built, 3.00 allowed by base zoning.

## Recent sales

- Dec 19, 2025: $4,500,000

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 447 West 24th Street House (Individual Landmark). 7 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