# 5312 21st Avenue, Brooklyn

Vacant land · Block 5495, Lot 1143.

On Umarelli: https://umarelli.org/nyc/3054951143/5312-21-avenue

More construction in Ocean Parkway: https://umarelli.org/nyc/brooklyn/ocean-parkway.md

## 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.

## 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.

## 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