# 678 Union Street, Brooklyn

Condominium · 10 units · Block 955, Lot 7504.

On Umarelli: https://umarelli.org/nyc/3009557504/678-union-street

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

Every lot on block 955: https://umarelli.org/nyc/brooklyn/955.md

## Building permits

No building permits on file for this lot.

## Property taxes

- Assessment: $1,350,454
- 2026–27 tax: $28,054
- Market value (city estimate): $3,000,998
- Taxable value: $377,890
- Assessed land: $162,000
- Assessed improvements: $1,188,454
- Condo units with their own tax lots: 10

## Zoning

R6A: floor area ratio 2.94 built, 3.00 allowed by base zoning.

## Recent sales

- Apr 28, 2025: $730,000, Apt 4A
- Jun 23, 2021: $625,000, Apt 2A
- Jan 5, 2021: $610,000, Apt 3B
- Oct 12, 2018: $675,000, Apt 1B

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