21 Adelphi Street, Brooklyn

Apartment building · 8 units · built c. 1915 · Block 2032, Lot 14.

Building permits

Property taxes

Assessment
$841,500
2026–27 tax
$11,503
Market value (city estimate)
$1,870,000
Taxable value
$92,472
Assessed land
$7,650
Assessed improvements
$833,850

Zoning

M1-2: floor area ratio 2.20 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.

More construction in Brooklyn Navy Yard

Every lot on block 2032

Umarelli: construction in New York City and Jersey City