# 270 20th Street, Brooklyn

Three-family · built c. 1899 · Block 891, Lot 23.

On Umarelli: https://umarelli.org/nyc/3008910023/270-20-street

More construction in Sunset Park: https://umarelli.org/nyc/brooklyn/sunset-park.md

## Building permits

- New Building — Multi-Family, filed Mar 18, 2026, 10 units, 5 stories, described as “Proposed 5 story residential new building. Formation of new zoning lot with adjacent tax lot 21”
- Alteration, filed May 12, 2026, estimated cost $160, described as “Proposed construction fence. No change to use, egress or occupancy under this application.”
- Demolition, filed Jul 23, 2025, estimated cost $1K, described as “Full demolition to a three story house”

## Property taxes

- Assessment: $123,180
- 2026–27 tax: $5,545
- Market value (city estimate): $2,053,000
- Taxable value: $27,946
- Assessed land: $20,940
- Assessed improvements: $102,240

## Zoning

R6B: floor area ratio 0.77 built, 2.00 allowed by base zoning.

## Recent sales

- Jun 25, 2019: $1,700,000

Open-market sales since 2016, from the Department of Finance’s sales files.

## Flood zone

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

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