148 West 23rd Street, Manhattan
Co-op · 107 units · built c. 1910 · Block 798, Lot 71.
Building permits
- Alteration, filed Jul 2, 2026, estimated cost $92K, described as “Apartment 12K renovation”
- Alteration, filed Sep 24, 2025, estimated cost $150K, described as “Interior fit-out of existing residential(floor 1) unit 1G proposed. Remove and install non-bearing partitions, install mini-split air conditioning unit. No change of use and occupancy under this application.”
- Alteration, filed Sep 23, 2025, estimated cost $18K, described as “Interior fit-out of existing residential unit 1G proposed. Install new plumbing fixtures. No change of use and occupancy under this application.”
- Alteration, filed Jun 25, 2025, estimated cost $60K, described as “Interior renovation of apt 2HJ on 2nd floor. Partition work, upgrade bathroom and kitchen. No change in use, egress and occupancy”
- Alteration, filed Feb 13, 2025, estimated cost $78K, described as “Renovate apt 5A. Work to remove and install interior partitions as shown on drawings . No change to use, egress or occupancy.”
- Alteration, filed Dec 21, 2023, estimated cost $228K, described as “Filing herewith for the interior renovation of existing apartment including the change of minimum partitions , floor , kitchen and bathroom. There is no change to use, egress, or occupancy.”
- Alteration, filed Jun 20, 2023, estimated cost $175K, described as “Demolish and construct new interior partitions for unit 12F and replace various finishes & fixtures. No change in use, egress or occupancy.”
- Alteration, filed Jun 20, 2023, estimated cost $25K, described as “Modifications to plumbing fixtures within unit # 12F”
- Alteration, filed Mar 29, 2023, estimated cost $78K, described as “Renovate apt 4C. Work to remove and install interior partitions as shown on drawings . No change to use, egress or occupancy.”
- Alteration, filed Oct 5, 2022, estimated cost $21K, described as “Modification of existing plumbing fixtures in apt 2A as shown on drawings no change to use, egress, or occupancy.”
- Alteration, filed Oct 5, 2022, estimated cost $38K, described as “Renovate existing apt 2A. Work to remove interior partitions and install new partitions, and doors as shown on drawings. No change to use, egress, or occupancy.”
- Alteration, filed Jun 17, 2022, estimated cost $11K, described as “Plumbing work filed to replace & relocate plumbing fixtures, and install 1 new shower as per plan to conjunct with DOB now M00752140.. No change in use, egress or occupancy.”
- Alteration, filed Jun 17, 2022, estimated cost $18K, described as “Interior renovation of existing apartment #11A with removing non-bearing partitions, replacing bathroom floor tiles, repairing partitions, ceiling, painting work, new partition, door. No change in use, egress or occupancy.”
- Alteration, filed Oct 25, 2021, estimated cost $105K, described as “General construction to include interior partitions modification and doors in apt. 7A as shown on drawings. No change to use, egress, or occupancy.”
- Alteration, filed Oct 25, 2021, estimated cost $24K, described as “Remove and install plumbing fixtures in apt 7A as shown on drawings. No change to use, egress, or occupancy.”
- Alteration, filed Sep 14, 2021, estimated cost $10K, described as “Remove existing masonry infill from original lot line window, install self closing per requirements noted on Building Bulletin 2015-17 Section II”
- Alteration, filed Jun 12, 2021, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed as per plans. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of the NYC building code. Live load 300 psf”
- Alteration, filed May 10, 2021, estimated cost $1K, described as “Installation of temporary skylight protection as per plans. No change in use, egress or occupancy, protection shall comply with CHAPTER#33 of 2014 the ny building code.”
- Alteration, filed Sep 17, 2020, estimated cost $10K, described as “Plumbing application to replace (1) mixed fuel gas stove, (1) kitchen sink, (1) dw, (1) wc, and (1) lav. Remove (1) tub and install with (1) new shower".”
- Alteration, filed Dec 18, 2019, estimated cost $16K, described as “Plumbing work filed in conjunction with the renovation of an existing dwelling unit. Architectural work filed under 123846561. No change of use, occupancy or egress.”
- Alteration, filed Feb 19, 2019, described as “Installation of pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Nov 15, 2017, described as “Installation of heavy duty sidewalk shed as per plans. No change in use, egress or occupancy.”
Property taxes
- Assessment
- $15,414,300
- 2026–27 tax
- $1,439,692
- Market value (city estimate)
- $34,254,000
- Taxable value
- $13,643,294
- Assessed land
- $1,449,000
- Assessed improvements
- $13,965,300
Tax breaks
- Co-op and condo abatement, with no end date, a $258,320 credit this tax year.
Zoning
C6-3X: floor area ratio 12.58 built, above the 9.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Oct 30, 2025: $1,050,000
- Jul 8, 2025: $1,550,000
- Jun 20, 2025: $730,000
- May 13, 2025: $1,400,000
- May 2, 2025: $1,100,000
- Apr 21, 2025: $545,000
- Apr 11, 2025: $850,000
- Feb 7, 2025: $1,140,000
- Nov 21, 2023: $1,340,000
- Aug 29, 2023: $865,000
The 10 most recent of 49 open-market sales since 2016, from the Department of Finance’s sales files.