# 353 West 20th Street, Manhattan

Apartment building · 7 units · built c. 1853 · Block 744, Lot 10.

On Umarelli: https://umarelli.org/nyc/1007440010/353-west-20-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 29, 2025, estimated cost $5K, described as “Installation of Temporary plywood enclosure for site-specific engineered enclosure system as per BC 2022 Chapter 33 Section 3309.17 as the alternative to the adjoining property protection. No change in use, egress and/or occupancy with…”
- Alteration, filed Nov 21, 2024, estimated cost $1K, described as “Installation of temporary construction fence in rear yard . Filed to remove violation.”
- Alteration, filed Jul 17, 2023, estimated cost $245K, described as “Horizontal building extension, replacement of existing framing. New elevator installation. Below Grade Extension at rear”
- Alteration, filed Jul 17, 2023, estimated cost $190K, described as “Foundation work during renovation of townhouse”
- Alteration, filed Jul 14, 2023, estimated cost $225K, described as “Support of excavation during renovation of townhouse”
- Alteration, filed Jul 14, 2023, estimated cost $40K, described as “Replacement of egress only sprinkler system with whole house NFPA13D sprinkler systemr”
- Alteration, filed Jul 13, 2023, estimated cost $250K, described as “Mechanical work during renovation of townhouse”
- Alteration, filed Jul 13, 2023, estimated cost $140K, described as “New plumbing installation during renovation of townhouse”
- Alteration, filed Jun 13, 2023, estimated cost $3.0M, described as “Convert multi-family townhouse to single-family townhouse”
- Alteration, filed Nov 30, 2022, estimated cost $10K, described as “Removal of plumbing fixtures during interior demolition”
- Alteration, filed Nov 30, 2022, estimated cost $25K, described as “Interior demolition”
- Alteration, filed Nov 10, 2022, estimated cost $5K, described as “Installation of temporary supported scaffold per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Nov 10, 2022, estimated cost $5K, described as “Installation of 32' new sidewalk shed at 353 w 20th st, as indicated on plans. There will be no change in the use, egress, or occupancy under this application.”
- Alteration, filed May 21, 2021, estimated cost $20K, described as “Repairs to facade in response to violations #39017234R and #35498219N. No change to use, occupancy, zoning, fire protection or egress under this application.”

## Property taxes

- Assessment: $1,494,450
- 2026–27 tax: $72,534
- Market value (city estimate): $3,321,000
- Taxable value: $583,114
- Assessed land: $198,000
- Assessed improvements: $1,296,450

## Zoning

R7B: floor area ratio 2.28 built, 3.00 allowed by base zoning.

## Flood zone

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

## Landmarks

Part of Chelsea Historic District (Historic District). 18 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