# 691 4th Avenue, Brooklyn

Apartment building · 84 units · built 2025 · Block 643, Lot 1.

On Umarelli: https://umarelli.org/nyc/3006430001/691-4-avenue

More construction in Sunset Park: https://umarelli.org/nyc/brooklyn/sunset-park.md

Every lot on block 643: https://umarelli.org/nyc/brooklyn/643.md

## Building permits

- Alteration, filed Jul 16, 2026, estimated cost $154K, described as “Install new gas generator on roof in conjunction with NB job#321183287,no change in use,egress and occupancy.”
- Alteration, filed Jun 12, 2026, estimated cost $25K, described as “Installation of 300 psf sidewalk shed as per plans. All equipment shall comply with chapter #33 of the 2022 code. No change in use, egress or occupancy under this application.”
- Alteration, filed Feb 20, 2026, estimated cost $10K, described as “Equipment use: single 6000 # capacity personnel hoist during NB const, filed sep. Hoist shall comply with ch #33 of the NYC bc. No change in use, occupancy or egress under this application. Elevator application submitted separately”
- Alteration, filed Nov 25, 2025, estimated cost $30K, described as “Installation of pipe scaffolding and needle beam as per plans. All equipment shall comply with chapter # 33 of the 2022 code. No change in use occupancy or egress under this application.”
- Alteration, filed Apr 28, 2025, estimated cost $25K, 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 Apr 27, 2022, estimated cost $1K, described as “Install temporary dry standpipe system during construction as per plans filed in conjunction with NB job# 321183287.no change in use,egress and occupancy.”

## Property taxes

- Assessment: $1,457,100
- 2026–27 tax: $117,929
- Market value (city estimate): $3,238,000
- Taxable value: $948,060
- Assessed land: $1,457,100

## Zoning

R8A: floor area ratio 8.79 built, above the 6.02 base zoning allows, which bonuses, transfers or older rules can permit.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

## In the news

[Excavation Awaits at 179 22nd Street in South Slope, Brooklyn](https://newyorkyimby.com/2024/11/excavation-awaits-at-179-22nd-street-in-south-slope-brooklyn.html), New York YIMBY, Nov 4, 2024.

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