821 Carroll Street, Brooklyn
Apartment building · 5 units · built c. 1896 · Block 1068, Lot 66.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $1,530,450
- 2026–27 tax
- $76,640
- Market value (city estimate)
- $3,401,000
- Taxable value
- $616,123
- Assessed land
- $275,400
- Assessed improvements
- $1,255,050
Zoning
R7B: floor area ratio 2.56 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Nov 13, 2025: $4,400,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District (Historic District). 6 Landmarks Preservation Commission permits are on file.