# 790 Union Street, Brooklyn

Condominium · 1 unit · built c. 1901 · Block 957, Lot 7501.

On Umarelli: https://umarelli.org/nyc/3009577501/790-union-street

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

Every lot on block 957: https://umarelli.org/nyc/brooklyn/957.md

## Building permits

- Alteration, filed Oct 1, 2026, estimated cost $209K, described as “Interior renovation of existing commercial space for professional practice”

## Property taxes

- Assessment: $677,250
- 2026–27 tax: $40,266
- Market value (city estimate): $1,505,000
- Taxable value: $381,720
- Assessed land: $49,500
- Assessed improvements: $627,750
- Condo units with their own tax lots: 2

## Tax breaks

- Co-op and condo abatement, with no end date, a $4,248 credit this tax year.

## Zoning

R6A: floor area ratio 1.63 built, 3.00 allowed by base zoning.

## Recent sales

- Nov 7, 2022: $1,500,000, Apt 2

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