# 1646 Union Street, Brooklyn

Apartment building · 23 units · built c. 1920 · Block 1401, Lot 39.

On Umarelli: https://umarelli.org/nyc/3014010039/1646-union-street

More construction in Crown Heights: https://umarelli.org/nyc/brooklyn/crown-heights.md

Every lot on block 1401: https://umarelli.org/nyc/brooklyn/1401.md

## Building permits

- Alteration, filed Jan 13, 2026, estimated cost $35K, described as “Application for renovation of kitchen and bathroom in apt. 3F on 3RD floor and 4F on 4TH floor; plubming and partition work as per plan. No change in use, occupancy or exit.”
- Alteration, filed Jun 14, 2023, estimated cost $35K, described as “1. Rebuild the existing parapet wall at front,east and west side elevation=229 LF2.replace existing window sill at front ,east and west side elevation approximately =15 nos”
- Alteration, filed Jul 5, 2022, estimated cost $38K, described as “Facade repair, replace window lintels and grinding and pointing and replace parapet wall as per plan. There will be no change in the use, egress, or occupancy under this application.”
- Alteration, filed May 18, 2022, estimated cost $15K, described as “Proposed installation of temporary pipe scaffold as per plans. Work shall comply with chapter #33 of the NYC building code. No change in use, occupancy, or egress under this application.”
- Alteration, filed May 18, 2022, estimated cost $15K, described as “Proposed installation of heavy duty sidewalk shed as per plans. Live load 300 lbs per square feet. Sidewalk shed shall comply with chapter #33 of the NYC building code. No change in use, occupancy, or egress under this application.”
- Alteration, filed Jan 28, 2020, estimated cost $8K, described as “Install hot water coil , replace gas train and reconnect existing gas line”
- Alteration, filed Jan 28, 2020, estimated cost $102K, described as “Boiler and burner replacement for use with existing natural gas and existing #2 oil .”

## Property taxes

- Assessment: $945,000
- 2026–27 tax: $100,566
- Market value (city estimate): $2,100,000
- Taxable value: $808,470
- Assessed land: $39,600
- Assessed improvements: $905,400

## Zoning

R4: floor area ratio 3.03 built, above the 1.00 base zoning allows, which bonuses, transfers or older rules can permit.

## 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