# 833 Union Street, Brooklyn

Commercial · built c. 1921 · Block 954, Lot 55.

On Umarelli: https://umarelli.org/nyc/3009540055/833-union-street

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

Every lot on block 954: https://umarelli.org/nyc/brooklyn/954.md

## Building permits

- Alteration, filed Sep 15, 2025, estimated cost $102K, described as “Installation of HVAC blower units on 2ND floor and HVAC condensing units at rear yard with access metal ladder at rear of building”
- Alteration, filed Sep 14, 2020, estimated cost $38K, described as “Removal and installation of cooking equipment and plumbing fixtures.”
- Alteration, filed Sep 14, 2020, estimated cost $5K, described as “Installation of compressor for refrigeration system.”

## Property taxes

- Assessment: $336,150
- 2026–27 tax: $21,923
- Market value (city estimate): $747,000
- Taxable value: $202,095
- Assessed land: $27,900
- Assessed improvements: $308,250

## Tax breaks

- Nonprofit exemption (mental or moral improvement), with no end date, about $10,798 a year below the full tax.

## Zoning

R6A: floor area ratio 2.45 built, 3.00 allowed by base zoning.

## 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