# 5721 21st Avenue, Brooklyn

Two-family · built c. 1920 · Block 5501, Lot 3.

On Umarelli: https://umarelli.org/nyc/3055010003/5721-21-avenue

More construction in Borough Park: https://umarelli.org/nyc/brooklyn/borough-park.md

Every lot on block 5501: https://umarelli.org/nyc/brooklyn/5501.md

## Building permits

No building permits on file for this lot.

## Property taxes

- Assessment: $112,620
- 2026–27 tax: $8,948
- Market value (city estimate): $1,877,000
- Taxable value: $45,095
- Assessed land: $19,860
- Assessed improvements: $92,760

## Zoning

R5: floor area ratio 0.73 built, 1.50 allowed by base zoning.

## 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