814 Carroll Street, Brooklyn
Co-op · 72 units · built 1950 · Block 1071, Lot 14.
Building permits
- Alteration, filed Jan 7, 2026, estimated cost $20K, described as “Installation of cocoon system for public protection as per BB2023-006”
- Alteration, filed Aug 4, 2025, described as “IRA to assist with Condition Assessment.”
- Alteration, filed Jun 12, 2023, estimated cost $98K, described as “Renovation of existing apartment on the 3RD floor. Architectural & plumbing only. No change in use, egress, or occupancy work is proposed under this application. Proposed renovation will have no negative effect on the buildings existing…”
- Alteration, filed Jan 6, 2023, estimated cost $116K, described as “Hereby filing general construction work at 8TH floor unit 8A as per plans”
- Alteration, filed Jan 5, 2023, estimated cost $9K, described as “Hereby filing plumbing work at 8TH floor unit 8A as per plans”
- Alteration, filed Dec 7, 2022, estimated cost $63K, described as “Renovate existing apt. 8F. Work to include partiition modification and doors. No change to use, egress or occupancy.”
- Alteration, filed Dec 7, 2022, estimated cost $14K, described as “Remove and install plumbing fixtures as shown on drawings. No change use, egress or occupancy.”
- Alteration, filed Apr 11, 2022, estimated cost $26K, described as “Installation of washer and dryers for accessory use tenant's laundry. Work also includes new sprinkler heads off existing automatic sprinkler system. No change in use, egress, or occupnacy”
- Alteration, filed Feb 10, 2022, estimated cost $53K, described as “Filed for existing garage roof replacement and the inner parapet wall and railing rehabilitation as per plans. No change in use occupancy or egress under this application. Sidewalk shed filed under a separate application.”
- Alteration, filed Apr 26, 2021, estimated cost $72K, described as “Proposed minor interior renovation including removal and installation of non bearing partitions and related finishes as per plans filed herewith. No change to use, egress, or occupancy,”
- Alteration, filed Mar 24, 2021, estimated cost $69K, described as “Combine two apartments into 1 apartment at 5TH floor as per plans.demolition of interior nonloadbearing partitions, construction of new partitions, no change in use egress or occupancy”
- Alteration, filed Jul 30, 2019, estimated cost $5K, described as “Installation of sidewalk shed as per plans. Sidewalk shed live load 300 psf shall comply with chapter #33 of the 2014 code no change to use, egress or occupancy under this application.”
Property taxes
- Assessment
- $6,087,600
- 2026–27 tax
- $593,887
- Market value (city estimate)
- $13,528,000
- Taxable value
- $5,445,285
- Assessed land
- $276,300
- Assessed improvements
- $5,811,300
Tax breaks
- Co-op and condo abatement, with no end date, a $84,306 credit this tax year.
Zoning
R7B: floor area ratio 5.04 built, above the 3.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Sep 3, 2026: $835,000
- May 7, 2026: $750,000
- Mar 12, 2026: $367,500
- Jun 25, 2025: $675,000
- Jun 17, 2025: $390,000
- Feb 20, 2025: $800,000
- Dec 9, 2024: $1,299,000
- Sep 19, 2023: $445,000
- Apr 5, 2023: $710,000
- Feb 24, 2023: $390,000
The 10 most recent of 29 open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District (Historic District). 45 Landmarks Preservation Commission permits are on file.