5312 21st Avenue, Brooklyn
Vacant land · Block 5495, Lot 1143.
Building permits
- New Building — Non-residential, filed Jul 29, 2025, 5 stories, described as “Filing for DOB denial for BSA - new construction of educational community facility”
- Alteration, filed Apr 21, 2023, estimated cost $1K, described as “Filing for fence application”
Property taxes
- Assessment
- $93,060
- Market value (city estimate)
- $1,551,000
- Taxable value
- $0
- Assessed land
- $93,060
Tax breaks
- Nonprofit exemption (nonprofit, use planned), with no end date, about $18,466 a year below the full tax.
Zoning
R5: floor area ratio 0.00 built, 1.50 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Sep 11, 2020: $4,081,000, 4,564 sq ft ($894 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.