# 420 Carroll Street, Brooklyn

Apartment building · 360 units · built 2022 · Block 453, Lot 1.

On Umarelli: https://umarelli.org/nyc/3004530001/424-carroll-street

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

## Building permits

- New Building — Tower, filed Oct 29, 2021, 360 units, 21 stories, described as “Development hub. This job to be filed with the development hub. Initial consultation occurred on september 27,2021. Erect 21 story (16 stories in east tower , 21 stories in west tower) mixed use new building.”
- Alteration, filed Aug 6, 2026, estimated cost $1K, described as “Illuminated non-advertising accessory wall sign - the shop. No change of use, egress or occupancy.”
- Alteration, filed Aug 6, 2026, estimated cost $600, described as “Illuminated non-advertising double-face projecting accessory sign - the shop workspace. No change of use, egress or occupancy.”
- Alteration, filed Mar 25, 2026, estimated cost $800K, described as “West retail - tenant d - installation of interior partitions and related finishes as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 27, 2026, estimated cost $200K, described as “Installation of interior partitions and finishes as per plans. No change in use, egress or occupancy. (Tenant A)”
- Alteration, filed Feb 27, 2026, estimated cost $200K, described as “Installation of interior partitions and finishes as per plans. No change in use, egress or occupancy. (Tenant C)”
- Alteration, filed Feb 27, 2026, estimated cost $150K, described as “Installation of interior partitions and finishes as per plans. No change in use, egress or occupancy. (Tenant B)”
- Alteration, filed Mar 4, 2025, estimated cost $100K, described as “Installation of interior finishes for tenant fitout as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jan 28, 2025, estimated cost $270K, described as “Interior renovation at ex. 1ST floor commercial space for proposed grocery & convenience retail. New commercial kitchen. New ADA bathroom. New hood exhaust, new referigeration compressors, new heat pump. Associated plumbing & work to be…”
- Alteration, filed Jun 27, 2024, estimated cost $1K, described as “Removal and installation of interior partitions as per plans. No change in use, egress or occupancy. Filed in conjunction with NB B00614338-I1.”
- Alteration, filed May 31, 2024, estimated cost $3K, described as “Installation of a temporary overhead protection per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Feb 23, 2024, estimated cost $5K, described as “Placement and usage of mobile mini crane as per plan submitted. No change in use, egress and/or occupancy with this filing.”
- Alteration, filed Mar 9, 2023, estimated cost $1K, described as “Installation of ez scale scaffolding in accordance with nycc 2022 chapter 33 buidling code. No change in egress, use, or occcupancy.”
- Alteration, filed Mar 9, 2023, estimated cost $1K, described as “Installation of pipe scaffolding in accordance with nycc 2022 chapter 33 building code. No change in egress, use, or occupancy.”
- Alteration, filed Jan 12, 2023, estimated cost $1K, described as “Installation and use of temporary material platforms as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Jan 12, 2023, estimated cost $1K, described as “Installation and use of temporary material platforms as per plans filed herewith. No change to use, egress or occupancy.”
- Alteration, filed Nov 4, 2022, estimated cost $5K, described as “Use of placing boom as per plans submitted herewith. Plans are filed in conjunction with NB#B00614338”
- Alteration, filed Sep 19, 2022, estimated cost $20K, described as “East hoist (cars 1&2): installation of dual 7000# capacity personnel/material hoists during NB (B00614338) const filed sep. Hoists shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this appl. Elev appl sub…”
- Alteration, filed Sep 19, 2022, estimated cost $20K, described as “West hoist (cars 3&4): installation of dual 7000# capacity personnel/material hoists during NB (B00614338) const filed sep. Hoists shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this appl. Elev appl sub…”
- Alteration, filed Sep 7, 2022, estimated cost $3K, described as “Installation of a temporary overhead protection per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Sep 7, 2022, estimated cost $3K, described as “Installation of a temporary construction fence per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Sep 6, 2022, estimated cost $3K, described as “Installation of a temporary heavy-duty sidewalk shed per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Jun 16, 2022, estimated cost $1K, described as “Application being filed for installation of temporary standpipe system in conjunction with NB#B00614338.”
- Alteration, filed Apr 26, 2022, estimated cost $1K, described as “Application filed to install portion of foundation in conjunction with NB# B00614338.”
- Alteration, filed Apr 13, 2022, estimated cost $10K, described as “Installation of fence on open space as per drawings.”

6 more, older permits are in this building’s full list on the map: https://umarelli.org/nyc/3004530001/424-carroll-street.

## Property taxes

- Assessment: $34,851,600
- 2026–27 tax: $218,732
- Market value (city estimate): $77,448,000
- Taxable value: $1,758,440
- Assessed land: $737,100
- Assessed improvements: $34,114,500

## Tax breaks

- 421-a exemption, through Jun 30, 2060, about $4,116,458 a year below the full tax.

## Zoning

M1-4/R7-2: floor area ratio 5.81 built, above the 3.44 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Feb 7, 2018: $47,500,000

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: 420 Carroll Street (City Planning 2022K0457): Certification, Completed, filed Nov 9, 2022, decided Jan 6, 2023. A Chairperson Certification pursuant to ZR 62-811 to facilitate a new as-of-right mixed-use development, including approximately 15,633 SF of waterfront public access areas, is being sought by a private applicant, 420 Carroll LLC, at 420…
- GSD Remediation Certification - 420 Carroll Street (City Planning 2022K0297): Certification, Completed, filed Feb 17, 2022, decided Mar 4, 2022. A Chairperson Certification pursuant to ZR 139-51 (g) to facilitate a new as-of-right 21 and 16-story 331,000 SF mixed-use development (360 DUs), including 14,200 SF of waterfront public access areas, is being sought by a private…
- 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

[$205M Financing Secured For 420 Carroll Street In Gowanus, Brooklyn](https://newyorkyimby.com/2025/08/205m-financing-secured-for-420-carroll-street-in-gowanus-brooklyn.html), New York YIMBY, Aug 1, 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