671 Hancock Street, Brooklyn
Two-family · built c. 1899 · Block 1657, Lot 71.
Building permits
- Alteration, filed Sep 24, 2021, estimated cost $30K, described as “Replace rear yard wood deck with new non-combustible deck, as per plans filed herewith. Work to include non-structural demolition, general construction and deck framing. No change in use, egress or occupancy.”
Property taxes
- Assessment
- $116,220
- 2026–27 tax
- $5,267
- Market value (city estimate)
- $1,937,000
- Taxable value
- $26,544
- Assessed land
- $17,880
- Assessed improvements
- $98,340
Zoning
R6B: floor area ratio 1.15 built, 2.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Aug 15, 2025: $2,051,000
- Dec 1, 2020: $1,700,000, 2,160 sq ft ($787 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.