# 315 West 23rd Street, Manhattan

Co-op · 81 units · built c. 1926 · Block 747, Lot 28.

On Umarelli: https://umarelli.org/nyc/1007470028/315-west-23-street

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

Every lot on block 747: https://umarelli.org/nyc/manhattan/747.md

## Building permits

- Alteration, filed Apr 28, 2026, estimated cost $300K, described as “Renovation of existing apartment. No change in use, egress, or occupancy”
- Alteration, filed Feb 5, 2025, estimated cost $100K, described as “Hereby filing for interior renovation of existing apartment PH1. No change in use, occupancy or egress.”
- Alteration, filed Sep 19, 2024, described as “Installation of heavy duty sidewalk shed. no change in use, occupancy or egress. work shall comply with chapter 33 of nycc.”
- Alteration, filed Jul 22, 2024, estimated cost $400K, described as “Cycle 9B facade repair work in compliance with ll 11/98 as per plans filed.”
- Alteration, filed Jun 10, 2024, described as “Suspended Scaffold Outrigger Systems For Facade Restoration & Inspection”
- Alteration, filed Feb 27, 2023, estimated cost $17K, described as “New bathroom consisting of (1) new shower, (1) new toilet and (1) new lav. Renovated bathroom consisting of (1) relocated tub, (1) relocated toilet and (1) relocated lav. Relocate (1) washer and (1) sink and (1) dishwasher. Relocate (1)…”
- Alteration, filed Feb 27, 2023, estimated cost $107K, described as “Removal and installtion of interior partitions, flooring and fixtures. No change to use, egress or occupancy.”
- Alteration, filed Apr 25, 2022, estimated cost $6K, described as “4c-install new wall partition, 4 E install new window -create new opening.”
- Alteration, filed Sep 13, 2021, estimated cost $120K, described as “Interior renovations on 6th floor apt#6b-all finishes as per plans. plumbing to be filed under separate application.”
- Alteration, filed Sep 13, 2021, estimated cost $21K, described as “Plumbing work in connection with ot# M00591784-I1on 6th floor apt#6b-all finishes as per plans.”
- Alteration, filed Aug 24, 2021, estimated cost $38K, described as “Prepare masonry for new window and AC sleeves and installation of AC units. No change in use, occupancy or egress under this application.”
- Alteration, filed Jun 18, 2021, estimated cost $11K, described as “Renovation of existing bathrooms at Apartment 9B. No change in use, egress or occupancy.”
- Alteration, filed Jun 9, 2021, estimated cost $115K, described as “Interior renovation of apt 4A including new finishes and partitions per plans. No change in use, egress, bulk or occupancy.”
- Alteration, filed Nov 6, 2020, estimated cost $10K, described as “Installation of sidewalk shed, pipe scaffold and construction fence as per plans. Sidewalk shed live load will be 300 psf, all equipment shall comply with chapter #33 of the 2014 code no change to use, egress or occupancy.”
- Alteration, filed Aug 24, 2020, estimated cost $14K, described as “New bathroom consisting of (1) new shower, (1) new toilet and (1) new lav. Renovated bathroom consisting of (1) relocated tub, (1) relocated toilet and (1) relocated lav. Relocate (1) washer and (1) gas dryer.”
- Alteration, filed Jul 6, 2020, estimated cost $44K, described as “Structural work filed in conjunction with alt 1 #122726906. No change in use, egress or occupancy.”
- Alteration, filed Sep 10, 2019, estimated cost $23K, described as “Plumbing work @ 2ND. Floor unit 2B. No changes in use, egress or occupancy.”
- Alteration, filed Mar 8, 2019, described as “Installation of pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Mar 30, 2018, estimated cost $7K, described as “Proposed installation of heavy duty sidewalk shed as per plans. Live load 300 lbs per square feet. Sidewalk shed shall comply with chapter #33 of the NYC building code. No change in use, occupancy, or egress under this application.”

## Property taxes

- Assessment: $15,270,750
- 2026–27 tax: $1,515,226
- Market value (city estimate): $33,935,000
- Taxable value: $14,090,210
- Assessed land: $792,000
- Assessed improvements: $14,478,750

## Tax breaks

- Co-op and condo abatement, with no end date, a $238,213 credit this tax year.

## Zoning

C2-6: floor area ratio 11.96 built, above the 3.44 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Apr 21, 2026: $1,120,000
- Jul 21, 2025: $1,215,000
- Jul 10, 2024: $1,625,000
- Jul 1, 2024: $1,680,000
- May 30, 2024: $1,595,000
- Nov 14, 2022: $729,494
- Jun 9, 2022: $1,660,000
- Jun 1, 2022: $1,649,000
- May 5, 2022: $1,209,000
- May 5, 2022: $1,680,000

The 10 most recent of 33 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