433 Carroll Street, Brooklyn
Two-family · built c. 1899 · Block 447, Lot 59.
Building permits
- Alteration, filed Jun 24, 2026, estimated cost $1K, described as “Install construction fence to enclose site”
- Demolition, filed Jun 22, 2026, estimated cost $246K, described as “HPD emergency demolition”
- Alteration, filed Nov 15, 2025, estimated cost $10K, described as “Installation of 300 psf sidewalk shed as per plans. All equipment shall comply with chapter #33 of the 2022 code. No change in use, egress or occupancy under this application.”
- Major Renovation — Residential, filed Aug 21, 2023, estimated cost $378K, 2 units in all, 4 stories, described as “Vertical/horizontal enlargement and interior renovations throughout.”
- Alteration, filed Aug 11, 2023, estimated cost $8K, described as “Foundation and structural work for a 4-story building with penthouse and a 2-family dwelling.”
- Alteration, filed Jul 11, 2023, estimated cost $4K, described as “Interior renovations for partial demolition to non-bearing walls”
- Alteration, filed Jul 11, 2023, estimated cost $3K, described as “Interior renovation for partial demolition of plumbing fixtures.”
Property taxes
- Assessment
- $71,520
- 2026–27 tax
- $2,960
- Market value (city estimate)
- $1,192,000
- Taxable value
- $14,916
- Assessed land
- $16,200
- Assessed improvements
- $55,320
Zoning
M1-4/R6A: floor area ratio 1.00 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, moderate risk: a 0.2% chance of flooding each year. FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NAVD88).
Recent sales
- Mar 30, 2023: $1,300,000, 900 sq ft ($1,444 per sq ft)
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…