129 23rd Street, Brooklyn
Apartment building · 6 units · built c. 1930 · Block 645, Lot 67.
Building permits
- Alteration, filed Jul 13, 2026, estimated cost $9K, described as “Proposed installation of temporary pipe scaffold as per plans. Work shall comply with chapter #33 of the NYC building code. No change in use, occupancy, or egress under this application.”
- Alteration, filed Jul 13, 2026, estimated cost $9K, 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.”
- Alteration, filed Jan 21, 2026, estimated cost $229K, described as “Facade repairs and roof replacement as per plans filed herewith. No change to use, egress or occupancy”
- Alteration, filed Mar 28, 2025, estimated cost $687K, described as “OT: Interior Renovation including replacement of doors, finishes and millwork. Exterior Renovation including replacement of doors, windows, and skylight. No change in use occupancy, or egress.”
Property taxes
- Assessment
- $649,800
- 2026–27 tax
- $37,907
- Market value (city estimate)
- $1,444,000
- Taxable value
- $304,740
- Assessed land
- $51,750
- Assessed improvements
- $598,050
Zoning
M1-2D: floor area ratio 2.33 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.