650 Williams Avenue, Brooklyn
Single family · built 2002 · Block 3867, Lot 137.
Building permits
No building permits on file for this lot.
Property taxes
- Assessment
- $40,020
- 2026–27 tax
- $6,549
- Market value (city estimate)
- $667,000
- Taxable value
- $33,003
- Assessed land
- $19,200
- Assessed improvements
- $20,820
Tax breaks
- UDAAP exemption, through Jun 30, 2027, about $359 a year below the full tax.
Zoning
R6: floor area ratio 0.51 built, 2.43 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Aug 14, 2026: $745,000, 1,338 sq ft ($557 per sq ft)
- Apr 9, 2020: $550,000, 1,338 sq ft ($411 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.