# 498 Union Street, Brooklyn

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

On Umarelli: https://umarelli.org/nyc/3004390001/310-nevins-street

More construction in Gowanus: https://umarelli.org/nyc/brooklyn/gowanus.md

## Building permits

- New Building — Tower, filed Nov 18, 2021, 348 units, 22 stories, described as “Filing to erect a new 22 story mixed use building (Building A). Affordable housing. HUB consultation accepted on 9/21/21 (300 Nevins St). This NB is located within the Gowanus rezoning area & is pursuing FO approval/permit . Related NB…”
- Alteration, filed Apr 16, 2026, estimated cost $5K, described as “Installation of temporary heavy duty sidewalk shed as per plans. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of 2022 the NYC building code. Live load 300PSF.”
- Alteration, filed Apr 16, 2026, estimated cost $5K, described as “Installation of temporary heavy duty sidewalk shed as per plans. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of 2022 the NYC building code. Live load 300PSF.”
- Alteration, filed Sep 19, 2025, estimated cost $1K, described as “Proposed installation of temporary pipe scaffold as per plans. Work shall comply with chapter #33 of 2022 the NYC building code. No change in use, occupancy, or egress under this application.”
- Alteration, filed Mar 5, 2025, estimated cost $14K, described as “Installation of 6000 lb dual personnel/material hoist car as per plans during construction. Hoist shall comply with chapter #33 of the 2022 code. No change in use, egress or occupancy under this application.”
- Alteration, filed Feb 11, 2025, estimated cost $1K, described as “Installation of outrigger platform in accordance with nycc 2022 chapter 33 building code. No change in egress, use, or occupancy.”
- Alteration, filed Dec 9, 2024, estimated cost $50K, described as “Installation of 300 psf sidewalk shed as per plans. All equipment shall comply with chapter # 33 of the NYC code 2022, no changes in use egress or occupancy under this application.”
- Alteration, filed Mar 28, 2024, estimated cost $1K, described as “Support of excavation for new Con-Ed vault in conjunction with NB B00611166-I1”
- Alteration, filed Jan 13, 2021, estimated cost $5K, described as “Fabricate two chain link propane storage tank cages and install in yard area of building for the purpose of sales of propane cylinders. No change to zoning, egress or occupancy.”

## 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.

## Recent sales

- Dec 30, 2021: $102,000,000

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

## Flood zone

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

## Board and land use applications

- GSD Waterfront Certification: 300 Nevins Street (City Planning 2022K0439): Certification, Completed, filed Feb 24, 2023, decided Jun 10, 2023. A Chairperson Certification pursuant to ZR 62-811 to facilitate a new as-of-right mixed-use development, including approximately 21,000 SF of waterfront public access areas, is being sought by a private applicant, Gowanus 300 Nevins Street…
- GSD Remediation Certification - 300 Nevins Street (City Planning 2022K0307): Certification, Completed, filed Feb 22, 2022, decided Apr 12, 2022. A Chairperson Certification pursuant to ZR 139-51 (g) to facilitate a new as-of-right mixed-use development, including approximately 23,000 SF of waterfront public access areas, is being sought by a private applicant, Gowanus 300 Nevins…
- Gowanus Neighborhood Plan (City Planning 2018K0382): Zoning map change, Zoning text change, City map change, Urban development action area, Completed, decided Dec 6, 2021. The Gowanus Neighborhood Plan is a shared, long-term vision for a thriving neighborhood. It looks to identify strategies for an equitable, resilient and sustainable Gowanus, with more local jobs and housing. The Plan supports community…
- CARROLL ST BRIDGE/GOWANUS CANAL (City Planning P1988K0234): Completed, decided Feb 11, 1988. LANDMARK SITE-LP1553

## In the news

[Nevins Landing Two-Tower Development Rises at 310-340 Nevins Street in Gowanus, Brooklyn](https://newyorkyimby.com/2025/02/nevins-landing-two-tower-development-rises-at-310-340-nevins-street-in-gowanus-brooklyn.html), New York YIMBY, Feb 5, 2025.

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