434 8th Street, Brooklyn
Single family · built c. 1889 · Block 1090, Lot 13.
Building permits
- Alteration, filed Sep 29, 2025, estimated cost $30K, described as “Replace existing rear deck surfaces/materials as per plans. No change in use, egress, or occupancy under this application.”
- Alteration, filed Mar 7, 2022, estimated cost $9K, described as “Installation of temporary construction fence as per plans. No change in use, occupancy, or egress under this application.”
- Alteration, filed Sep 17, 2021, estimated cost $60K, described as “Filing HVAC system and exhaust systems throughout single-family dwelling as per plans. No change in use, egress, or occupancy under this application.”
- Alteration, filed Sep 17, 2021, estimated cost $50K, described as “Filing plumbing modifications throughout single family dwelling as per plans. No change in use, egress, or occupancy under this application.”
- Alteration, filed Sep 15, 2021, estimated cost $450K, described as “Filing interior renovation of existing 1 family dwelling as well as new rear deck/balcony and stair as per plans. No change in use, egress, or occupancy under this application.”
Property taxes
- Assessment
- $99,600
- 2026–27 tax
- $13,747
- Market value (city estimate)
- $1,660,000
- Taxable value
- $69,281
- Assessed land
- $36,900
- Assessed improvements
- $62,700
Zoning
R6B: floor area ratio 1.35 built, 2.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Dec 22, 2020: $2,550,000, 2,700 sq ft ($944 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District Extension (Historic District). 7 Landmarks Preservation Commission permits are on file.