23 Ralph Avenue, Brooklyn

Commercial · built c. 1918 · Block 1479, Lot 1.

Building permits

New Building — Multi-Family, filed Apr 25, 2025, 49 units, 6 stories, described as “To Erect New 6 story + PENTHOUSE 49 Units Class A Multiple Dwelling Units building”
Alteration, filed Sep 28, 2026, estimated cost $5K, described as “Proposed installation of pipe scaffold for existing building as per plans. No change in use occupancy or egress under this application.”
Demolition, filed Jan 21, 2026, estimated cost $100K, described as “This job is filed for full demolition work at 880 quincy street, brooklyn, ny 11221”
Alteration, filed Nov 17, 2025, estimated cost $2K, described as “Proposed installation of heavy duty sidewalk shed for remedial repairs as per plans. No change in use occupancy or egress under this application. Live load 300 per square feet. Sidewalk shed shall comply with chapter # 33 of the 2022 code.”
Demolition, filed Dec 21, 2024, estimated cost $3K, described as “This job is filed for demolition of two story building.”
Alteration, filed Oct 20, 2021, estimated cost $1K, described as “Installation of temporary heavy duty sidewalk shed as per plans. No change in use, egress or occupancy. Sidewalk shed shall comply with chapter #33 of the NYC building code. Live load 300PSF.”
Alteration, filed Jul 19, 2021, estimated cost $5K, described as “Installation of 300 psf sidewalk shed as per plans. Sidewalk shed shall comply with chapter #33 of the 2014 code. No change inuse, egress or occupancy under this application.”

R6A: floor area ratio 0.48 built, 3.00 allowed by base zoning.

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

Open-market sales since 2016, from the Department of Finance’s sales files.