# 171 23rd Street, Brooklyn

Three-family · built c. 1899 · Block 645, Lot 45.

On Umarelli: https://umarelli.org/nyc/3006450045/171-23-street

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

Every lot on block 645: https://umarelli.org/nyc/brooklyn/645.md

## Building permits

- Alteration, filed Apr 7, 2022, estimated cost $39K, described as “File this application install new plumbing fixtures for existing residentail building ,plumbing work involved only.no change to use,egress and c of o.”
- Alteration, filed Apr 7, 2022, estimated cost $140K, described as “Interior renovation for existing 4 family units ,plumbing ,mechanical and structural work involved ,no change of use, egress occupancy.”

## Property taxes

- Assessment: $143,340
- 2026–27 tax: $6,142
- Market value (city estimate): $2,389,000
- Taxable value: $30,954
- Assessed land: $16,680
- Assessed improvements: $126,660

## Zoning

M1-2D: floor area ratio 1.40 built, 2.00 allowed by base zoning.

## Recent sales

- Dec 20, 2021: $1,665,000

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