# 434 8th Street, Brooklyn

Single family · built c. 1889 · Block 1090, Lot 13.

On Umarelli: https://umarelli.org/nyc/3010900013/434-8-street

More construction in Park Slope: https://umarelli.org/nyc/brooklyn/park-slope.md

Every lot on block 1090: https://umarelli.org/nyc/brooklyn/1090.md

## 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.

## 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.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

## Landmarks

Part of Park Slope Historic District Extension (Historic District). 7 Landmarks Preservation Commission permits are on file.

From New York City and Jersey City public records, refreshed within a day of each release. Sources: https://umarelli.org/sources. Methodology and corrections: https://umarelli.org/methodology