# 312 West 21st Street, Manhattan

Apartment building · 10 units · built c. 1900 · Block 744, Lot 48.

On Umarelli: https://umarelli.org/nyc/1007440048/312-west-21-street

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

Every lot on block 744: https://umarelli.org/nyc/manhattan/744.md

## Building permits

- Alteration, filed Dec 3, 2022, estimated cost $24K, described as “Replace exg. Steam boiler and exg. Oil fired burner with new steam boiler and new dual fuel burner. No change in use, egress or occupancy.”
- Alteration, filed Dec 3, 2022, estimated cost $8K, described as “Install new gas service, meter and piping to replacement gas burner. No change in use, egress or occupancy.”
- Alteration, filed Oct 14, 2022, estimated cost $48K, described as “Interior renovation as shown on plans filed herewith.”
- Alteration, filed May 6, 2022, estimated cost $79K, described as “Interior renovation as shown on plans filed herewith.”
- Alteration, filed May 5, 2022, estimated cost $56K, described as “Installation, relocation and removal of plumbing fixtures as shown on plans filed herewith.”
- Alteration, filed Nov 19, 2021, estimated cost $103K, described as “Interior renovation for Apt 4E, 4W to be combined to Apt 4F as shown on plans filed herewith.”
- Alteration, filed Nov 18, 2021, estimated cost $55K, described as “Installation, replacement, relocation and removal of plumbing fixtures.”
- Alteration, filed Nov 18, 2021, estimated cost $53K, described as “Interior renovation of Apt 2E (to be renamed 2F) and 2W as shown on plans filed herewith.”
- Alteration, filed Nov 17, 2021, estimated cost $60K, described as “Installation, relocation and removal of plumbing fixtures”
- Alteration, filed Oct 5, 2021, estimated cost $40K, described as “Interior renovation as shown on plans filed herewith.”
- Alteration, filed Oct 5, 2021, estimated cost $18K, described as “Installation, relocation and removal of plumbing fixtures.”

## Property taxes

- Assessment: $2,624,400
- 2026–27 tax: $80,878
- Market value (city estimate): $5,832,000
- Taxable value: $648,226
- Assessed land: $354,600
- Assessed improvements: $2,269,800

## Zoning

R7B: floor area ratio 3.88 built, above the 3.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Jul 1, 2021: $3,400,000

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

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

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