# 174 12th Street, Brooklyn

Single family · built c. 1899 · Block 1027, Lot 18.

On Umarelli: https://umarelli.org/nyc/3010270018/174-12-street

More construction in Gowanus: https://umarelli.org/nyc/brooklyn/gowanus.md

## Building permits

- Alteration, filed Jul 1, 2026, estimated cost $10K, described as “Install temporary construction fence for alt-NB job(#B01372489) with facade work.”
- Major Renovation — Conversion, filed Apr 1, 2026, estimated cost $1.1M, 3 units added, 4 stories, described as “Proposed two story vertical & horizontal enlargement with penthouse on existing 2-story residential building.convert existing 1-dwelling units into 4-dwelling units.obtain new certificate of occupancy.”

## Property taxes

- Assessment: $103,860
- 2026–27 tax: $3,889
- Market value (city estimate): $1,731,000
- Taxable value: $19,601
- Assessed land: $20,940
- Assessed improvements: $82,920

## Zoning

R6B: floor area ratio 0.69 built, 2.00 allowed by base zoning.

## Recent sales

- Sep 3, 2026: $2,100,000, 1,716 sq ft ($1,224 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.

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