817 8th Avenue, Brooklyn
Apartment building · 8 units · built c. 1911 · Block 1091, Lot 2.
Building permits
- Alteration, filed Aug 14, 2026, estimated cost $270K, described as “Interior renovation and combination of apartments 3F & 3R on floor 003 and apartments 4F & 4R on floor 004, as per tppn 3/97. No change in use,bulk occupancy or egress.”
Property taxes
- Assessment
- $1,191,600
- 2026–27 tax
- $30,998
- Market value (city estimate)
- $2,648,000
- Taxable value
- $249,200
- Assessed land
- $23,400
- Assessed improvements
- $1,168,200
Zoning
R7B: floor area ratio 2.69 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Jun 10, 2026: $3,922,500, 5,576 sq ft ($703 per sq ft)
- Jan 16, 2019: $3,600,000, Apt 8
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District Extension (Historic District). 3 Landmarks Preservation Commission permits are on file.