409 7th Avenue, Brooklyn
Mixed use · 6 units · built c. 1886 · Block 1100, Lot 8.
Building permits
- Alteration, filed Feb 4, 2024, estimated cost $1K, described as “No work application filed in conjunction with #B00791254 to add to final cost of construction and correct additional information only. No change in use or occupancy. No increase in bulk or far.”
- Alteration, filed Aug 17, 2023, estimated cost $15K, described as “Replacement of existing gas-fired boiler”
- Alteration, filed Aug 30, 2022, estimated cost $100K, described as “Replacement of plumbing fixtures on existing roughing”
- Alteration, filed Aug 23, 2022, estimated cost $400K, described as “New ceiling and wall surfaces throughout building, new stair treads, all floors to be replaced, all doors and frames to be replaced and all kitchen cabinets to be removed and replaced.”
Property taxes
- Assessment
- $1,151,550
- 2026–27 tax
- $49,726
- Market value (city estimate)
- $2,559,000
- Taxable value
- $399,762
- Assessed land
- $12,600
- Assessed improvements
- $1,138,950
Zoning
R6A: floor area ratio 2.61 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Apr 24, 2025: $6,931,000
- Jan 20, 2022: $3,950,000
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District Extension (Historic District). 6 Landmarks Preservation Commission permits are on file.