# 452 Union Street, Brooklyn

Apartment building · 158 units · built 2025 · Block 438, Lot 7.

On Umarelli: https://umarelli.org/nyc/3004380007/307-bond-street

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

## Building permits

- New Building — Tower, filed Sep 24, 2021, 158 units, 20 stories, described as “New 20-story mixed use building.”
- Alteration, filed Sep 10, 2025, described as “Installation of temporary construction fence per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Sep 3, 2025, estimated cost $5K, described as “Installation of temporary roof/overhead protection per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Aug 5, 2025, estimated cost $26K, described as “Application filed for support-of-excavation at sidewalk/street for installation of precast concrete con edison vaults”
- Alteration, filed Jul 14, 2025, described as “Installation of temporary sidewalk shed per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Jan 8, 2025, estimated cost $20K, described as “Installation of 7,000# temporary dual cars personnel/material hoists in conjunction with NB# B00591118-I1 per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this…”
- Alteration, filed Dec 6, 2024, described as “Installation of temporary supported scaffold per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Nov 19, 2024, estimated cost $5K, described as “Installation of temporary 8' high pluwood construction fence, no change in use, occupancy, or egress under this application.”
- Alteration, filed Mar 22, 2023, estimated cost $1K, described as “Installation of 8 inch high fence at subject premises.”
- No Work, filed Apr 2, 2019, described as “The eating and drinking temporary place of assembly will take place from 10:00am - 1:00am, daily.”

## Property taxes

- Assessment: $1,287,450
- 2026–27 tax: $101,461
- Market value (city estimate): $2,861,000
- Taxable value: $815,670
- Assessed land: $1,287,450

## Zoning

M1-4/R7-2: floor area ratio 7.51 built, above the 3.44 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Sep 14, 2022: $40,650,000

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

## Flood zone

Current FEMA flood map: zone X, moderate risk: a 0.2% chance of flooding each year.

## Board and land use applications

- GSD Waterfront Certification - 450 Union (City Planning 2023K0276): Certification, Filed, filed Jul 5, 2023, decided Feb 5, 2024. A Chairperson Certification pursuant to ZR 62-811(c) to facilitate a new as-of-right mixed-use development, including 5,700 SF of waterfront public access areas, is being sought by a private applicant, 2201 Union LLC, at 450 Union Street…
- GSD Remediation Certification - 450 Union Street (City Planning 2022K0350): Certification, Completed, filed Mar 3, 2022, decided Mar 17, 2022. A Chairperson Certification pursuant to ZR 139-51 (g) to facilitate a new as-of-right development including 4,000 SF of waterfront public access areas, is being sought by a private applicant, 450 Union Street LLC, at 450 Union Street…
- Union Street Waterfront Certification (City Planning 2019K0308): Certification, Completed, filed May 22, 2020, decided Jun 6, 2023. A Waterfront Certification pursuant to ZR Section 62-811 to facilitate a new approximately 4,000 sq ft waterfront public access area along the Gowanus Canal, is being sought by a private applicant, 450 Union Street, LLC at 450 Union…
- Variance or special permit (Board of Standards and Appeals 75-02-BZ): Variance or special permit, Denied, filed Mar 12, 2002, decided Feb 3, 2004. Variance (§72-21) to permit the proposed construction of a six story, 64-unit residential building, Use Group 2, located in an M2-1 zoning district, is contrary to §42-00.
- 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…

## In the news

[New Renderings Revealed For Anagram Gowanus At 450 Union Street In Brooklyn](https://newyorkyimby.com/2026/10/new-renderings-revealed-for-anagram-gowanus-at-450-union-street-in-brooklyn.html), New York YIMBY, Oct 26, 2026.

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