# 420 8th Street, Brooklyn

Three-family · built c. 1889 · Block 1090, Lot 6.

On Umarelli: https://umarelli.org/nyc/3010900006/420-8-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 Nov 4, 2026, estimated cost $76K, described as “Removal of Interior Non-Load Bearing Partitions. Floors: Cellar, Basment, 1st, 2nd, 3rd floors. No Change In Use Egresss or Occcupancy.”
- Alteration, filed Jul 1, 2026, estimated cost $382K, described as “Renovation of interior apartments in an existing 4-family building. Partition work, kitchen and bathroom renovations. New windows/doors.”

## Property taxes

- Assessment: $328,800
- 2026–27 tax: $13,310
- Market value (city estimate): $5,480,000
- Taxable value: $67,074
- Assessed land: $42,240
- Assessed improvements: $286,560

## Zoning

R6B (part of the lot is R6A): floor area ratio 2.23 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- May 28, 2026: $4,075,000, 4,080 sq ft ($999 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). 4 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