# 186 21st Street, Brooklyn

Apartment building · 26 units · built 2017 · Block 643, Lot 11.

On Umarelli: https://umarelli.org/nyc/3006430011/186-21-street

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

Every lot on block 643: https://umarelli.org/nyc/brooklyn/643.md

## Building permits

- Alteration, filed Dec 7, 2017, described as “Installation of heavy duty sidewalk shed as per plans. No change in use, egress or occupancy.”
- Alteration, filed Dec 7, 2017, described as “Installation of pipe scaffold as per plans. No change in use, egress or occupancy.”

## Property taxes

- Assessment: $3,363,750
- 2026–27 tax: $57,088
- Market value (city estimate): $7,475,000
- Taxable value: $458,941
- Assessed land: $845,100
- Assessed improvements: $2,518,650

## Tax breaks

- 421-a exemption, through Jun 30, 2055, about $361,329 a year below the full tax.

## Zoning

R6B: floor area ratio 2.74 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.

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