666 10th Street, Brooklyn
Two-family · built c. 1888 · Block 1095, Lot 23.
Building permits
- Alteration, filed Nov 8, 2022, estimated cost $689K, described as “Proposed 1-story rear horizontal enlargement, with terrace and roof deck, to the existing 3 story plus basement and cellar. Reconfigure existing 2-family to (1) triplexunit over (1) basement unit. Obtain new c of o.”
- Alteration, filed Nov 4, 2022, estimated cost $25K, described as “Propose spread footing and grade beam foundation for 1-story rear addition, detention tank at rear yard in conjunction with alt-co application filed under B08012091-I1”
- Alteration, filed Nov 4, 2022, estimated cost $126K, described as “Propose structural scope of works including new rear addition, opening at rear wall, alteration to existing floor framing in conjunction with alt - co application filed under B08012091-I1”
Property taxes
- Assessment
- $246,000
- 2026–27 tax
- $10,631
- Market value (city estimate)
- $4,100,000
- Taxable value
- $53,573
- Assessed land
- $35,460
- Assessed improvements
- $210,540
Zoning
R6B: floor area ratio 1.76 built, 2.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Sep 8, 2022: $3,500,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District (Historic District). 4 Landmarks Preservation Commission permits are on file.