343 4th Avenue, Brooklyn
Condominium · 113 units · built 2006 · Block 981, Lot 7501.
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Building permits
- Alteration, filed Aug 28, 2026, described as “Inspection using industrial rope access techniques and methods. See attached plans; designated primary site supervisor: GABRIEL HURTADO”
- Alteration, filed Sep 29, 2025, estimated cost $30K, described as “General construction to renovate apt 10A on the 10TH floor. Work will include new kitchenette and new plumbing fixtures. No change in use, egress, or occupancy under this filing.”
- Alteration, filed Mar 26, 2025, described as “Installation of suspended scaffold for facade work or inspection.”
- Alteration, filed Mar 14, 2025, estimated cost $1K, 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 May 7, 2024, estimated cost $30K, described as “Limited exterior repairs to existing building facade. No change to use, egress or occupancy.”
- Alteration, filed Apr 3, 2024, estimated cost $53K, described as “Garage repair”
- Alteration, filed Apr 2, 2023, estimated cost $345K, described as “Herewith filing for plumbing modifications for 1ST flr behavioral health unit per plans.”
- Alteration, filed Apr 2, 2023, estimated cost $120K, described as “Herewith filing for modifications to the sprinkler system for 1ST flr behavioral health unit per plans.”
- Alteration, filed Feb 7, 2023, estimated cost $460K, described as “Herewith filing for mechanical modifications for 1ST flr behavioral health unit per plans. No change in use, occupancy or egress under this application.”
- Alteration, filed Jan 17, 2023, estimated cost $1.4M, described as “Herewith filing for interior renovation of the behavioral health unit per plans. No change in use, occupancy or egress under this application.”
- Alteration, filed Jul 7, 2022, estimated cost $42K, described as “Interior renovation of apartment #7I with removal of non load-bearing partitions, replacement of wood flooring, installation of new interior partitions, and painting work. No change in use, egress or occupancy.”
- Alteration, filed Jul 7, 2022, estimated cost $3K, described as “Modification of existing sprinkler system at apartment #7I with replocate/new sprinkler head as per plan. No change in use, egress or occupancy.”
- Alteration, filed Oct 17, 2019, estimated cost $9K, described as “Replace kitchen sink and a dishwasher. Replace and relocate gas stove on 5TH floor.”
Property taxes
- Assessment
- $15,022,365
- 2026–27 tax
- $28,600
- Assessed land
- $360,003
- Assessed improvements
- $14,662,362
- Condo units with their own tax lots
- 116
Tax breaks
- 421-a exemption, through Jun 30, 2033, about $1,788,685 a year below the full tax.
Zoning
C4-4D: floor area ratio 6.61 built, above the 6.02 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Aug 24, 2026: $1,265,000, Apt 12C
- Aug 21, 2026: $750,000, Apt 4C
- Apr 23, 2026: $1,606,175, Apt 8A
- Mar 25, 2026: $1,090,000, Apt 11H
- Feb 27, 2026: $1,450,000, Apt 4Q
- Nov 7, 2025: $1,751,000, Apt 11B
- Aug 13, 2025: $1,250,000, Apt 9F
- Mar 14, 2025: $965,000, Apt 4E
- Feb 25, 2025: $840,000, Apt 5F
- Nov 15, 2024: $1,150,000, Apt 7E
The 10 most recent of 70 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…