806 Carroll Street, Brooklyn
Co-op · 4 units · built c. 1892 · Block 1071, Lot 10.
Building permits
- Alteration, filed Jul 1, 2026, estimated cost $131K, described as “Filed herewith facade repair work on south and east facades as per plans, including masonry repair and lintel replacement.”
- Alteration, filed Dec 30, 2024, estimated cost $20K, described as “Register two (2) furnaces and two (2) water heaters and one (1) clothes dryer in cellar.”
Property taxes
- Assessment
- $1,059,300
- 2026–27 tax
- $26,788
- Market value (city estimate)
- $2,354,000
- Taxable value
- $261,031
- Assessed land
- $8,100
- Assessed improvements
- $1,051,200
Tax breaks
- Co-op and condo abatement, with no end date, a $5,682 credit this tax year.
Zoning
R7B: floor area ratio 1.99 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Sep 29, 2020: $1,490,000, Apt 4
- Jul 31, 2017: $1,300,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District (Historic District). 8 Landmarks Preservation Commission permits are on file.