498 Union Street, Brooklyn

Apartment building · 654 units · built 2024 · Block 439, Lot 1.

Building permits

Property taxes

Assessment
$16,582,950
2026–27 tax
$1,942,926
Market value (city estimate)
$36,851,000
Taxable value
$15,619,634
Assessed land
$2,287,350
Assessed improvements
$14,295,600

Zoning

M1-4/R7-2: floor area ratio 6.04 built, above the 3.44 base zoning allows, which bonuses, transfers or older rules can permit.

Flood zone

Current FEMA flood map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NGVD29).

Recent sales

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

Board and land use applications

In the news

Nevins Landing Two-Tower Development Rises at 310-340 Nevins Street in Gowanus, Brooklyn, New York YIMBY, Feb 5, 2025.

More construction in Gowanus

Umarelli: construction in New York City and Jersey City