585 Union Street, Brooklyn
Apartment building · 214 units · built 2023 · Block 433, Lot 28.
Building permits
- New Building — Large Residential, filed Nov 16, 2021, 224 units, 9 stories, described as “Application to be assigned to HUB per Consultation meeting with SPV on 9/28/2021, 25% inclusionary housing. Application filed in order to erect 9 story mixed use new building.”
- Alteration, filed May 26, 2026, estimated cost $22K, described as “Filing to install first floor Cafe store kitchen hood, make up air and ductwork as per plans. No change in use, egress or occupancy.”
- Alteration, filed Apr 29, 2026, estimated cost $130K, described as “1ST floor interior renovation. No change in use, occupancy, or egress under this application.”
- Alteration, filed Oct 22, 2025, estimated cost $227K, described as “Partition work at ground floor commercial space. No change to use, egress or occupancy. Prior designation of ug 6 to remain, alteration-co not required per bb 2025-002 and ac 28-118.3 exception.”
- Alteration, filed Sep 23, 2024, described as “Floor numbers updated, 1ST floor is now 2ND floor and 7TH is now 10TH floor”
- Alteration, filed Aug 3, 2023, estimated cost $6K, described as “Installation of temporary personnel material hoist as per plans. No change in use, egress oroccupancy.”
- Alteration, filed Jul 27, 2023, described as “Installation of temporary pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jul 17, 2023, estimated cost $4K, described as “Installation of temporary overhead protection as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jul 17, 2023, estimated cost $6K, described as “Installation of temporary needle beam as per plans. No change in use, egress or occupancy.”
- Alteration, filed Jul 6, 2023, estimated cost $4K, described as “Installation of temporary roof protection as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 7, 2022, described as “Installation of temporary sidewalk shed as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 1, 2022, described as “Installation of temporary pipe scaffold as per plans. No change in use, egress or occupancy.”
- Alteration, filed Feb 1, 2022, described as “Installation of temporary sidewalk shed as per plans. No change in use, egress or occupancy.”
- Alteration, filed Dec 17, 2021, estimated cost $5K, described as “Installation of construction fence to protect site, during full demolition of 577 & 585 Union St, under DM application job #s322095923/322095656, both structures are under the same lot.”
Property taxes
- Assessment
- $30,673,800
- 2026–27 tax
- $193,646
- Market value (city estimate)
- $68,164,000
- Taxable value
- $1,556,764
- Assessed land
- $860,400
- Assessed improvements
- $29,813,400
Tax breaks
- 421-a exemption, through Jun 30, 2060, about $3,590,858 a year below the full tax.
Zoning
M1-4/R7A: floor area ratio 7.34 built, above the 4.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.
Recent sales
- Oct 17, 2019: $32,681,500
Open-market sales since 2016, from the Department of Finance’s sales files.
Board and land use applications
- 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
Union Channel Completes Construction at 240 Third Avenue in Gowanus, Brooklyn, New York YIMBY, Jun 24, 2025.