# 142 West 21st Street, Manhattan

Apartment building · 22 units · built c. 1925 · Block 796, Lot 63.

On Umarelli: https://umarelli.org/nyc/1007960063/142-west-21-street

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

## Building permits

- Alteration, filed May 11, 2025, estimated cost $5K, described as “Installation of temporary construction plywood fence as per plans. No change in use, egress or occupancy. Fence shall comply with chapter 33 of NYC building code of 2022.”
- Alteration, filed Feb 13, 2025, described as “Installation of temporary easy scale platform as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 11, 2025, described as “Installation of temporary pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Nov 26, 2024, estimated cost $1K, described as “Installation and use of telehandler as per plans filed herewith. No change in use, egress or occupancy.”
- Alteration, filed Oct 7, 2024, estimated cost $10K, described as “Equipment use: single #7000 # capacity personnel/material hoist during bldg alt, filed sep. Hoist shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application. Elevator application submitted…”
- Alteration, filed Jun 21, 2024, estimated cost $5K, described as “Installation of a temporarily supported scaffold per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed May 21, 2024, estimated cost $15K, described as “Installation of a temporarily heavy-duty sidewalk shed per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed May 17, 2024, estimated cost $12K, described as “Installation of a temporary Overhead protection & enclosed system via Scaffold, Fence, and Wire Screen per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this…”
- Alteration, filed Nov 7, 2023, estimated cost $5K, described as “Installation of temporary construction plywood fence as per plans. No change in use, egress or occupancy. Fence shall comply with chapter 33 of NYC building code of 2022.”
- Alteration, filed Apr 11, 2023, estimated cost $200K, described as “General construction foundation and structural work associated with existing garage ramp rebuilding. No change n occupancy, use or egress.”
- Alteration, filed Apr 7, 2023, estimated cost $15K, described as “Support of excavation associated with existing garage ramp rebuilding. No change in occupancy, use or egress.”
- Alteration, filed Apr 7, 2023, estimated cost $35K, described as “Partial demolition means and methods work associated with rebuilding of existing garage ramp. No change in occupancy, use or egress.”
- Alteration, filed Oct 19, 2022, estimated cost $1K, described as “Installation of temporary standpipe with air pressurization alarm, for temporary use during construction operations. No change in occupancy, use or egress. Filed in conjunction with #M00766992-i-1 alt-co- new building with existing…”
- Major Renovation — Conversion, filed Aug 2, 2022, estimated cost $15.0M, 22 units added, 13 stories, described as “Development HUB Initial consultation for the subject project was completed on 12/17/2021 at 10:00 am. Vertically enlarging and converting existing garage building, and maintaining existing garage use in cellar.”

## Property taxes

- Assessment: $4,625,550
- 2026–27 tax: $436,074
- Market value (city estimate): $10,279,000
- Taxable value: $3,505,698
- Assessed land: $1,842,300
- Assessed improvements: $2,783,250

## Zoning

C6-3A: floor area ratio 9.69 built, above the 7.52 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Aug 23, 2021: $31,000,000

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

## Flood zone

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

## In the news

[The Myles Nears Completion At 142 West 21st Street in Chelsea, Manhattan](https://newyorkyimby.com/2026/10/the-myles-nears-completion-at-142-west-21st-street-in-chelsea-manhattan.html), New York YIMBY, Oct 20, 2026.

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