# 215 21st Street, Brooklyn

Apartment building · 6 units · built c. 1931 · Block 640, Lot 50.

On Umarelli: https://umarelli.org/nyc/3006400050/215-21-street

More construction in Sunset Park: https://umarelli.org/nyc/brooklyn/sunset-park.md

Every lot on block 640: https://umarelli.org/nyc/brooklyn/640.md

## 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.

## Recent sales

- Oct 7, 2021: $1,500,000

Open-market sales since 2016, from the Department of Finance’s sales files.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

From New York City and Jersey City public records, refreshed within a day of each release. Sources: https://umarelli.org/sources. Methodology and corrections: https://umarelli.org/methodology