215 21st Street, Brooklyn
Apartment building · 6 units · built c. 1931 · Block 640, Lot 50.
Building permits
- Alteration, filed Nov 9, 2026, estimated cost $48K, described as “Proposed combination of (2) existing apartments 1F & 1R on 1ST floor into (1) unit, reducing dwelling units from 6 to 5. Minor partitions and interior finish work as per plan. Plumbing filed under job# B01471421-S1. No change in use.…”
Property taxes
- Assessment
- $767,250
- 2026–27 tax
- $13,467
- Market value (city estimate)
- $1,705,000
- Taxable value
- $138,913
- Assessed land
- $7,200
- Assessed improvements
- $760,050
Tax breaks
- Abatement (city code MCI), through Jun 30, 2027, a $3,812 credit this tax year.
Zoning
R6B: floor area ratio 2.06 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Oct 7, 2021: $1,500,000
Open-market sales since 2016, from the Department of Finance’s sales files.