# 4509 18th Avenue, Brooklyn

Auto repair · built 1945 · Block 5439, Lot 27.

On Umarelli: https://umarelli.org/nyc/3054390027/4509-18-avenue

More construction in Borough Park: https://umarelli.org/nyc/brooklyn/borough-park.md

## Building permits

- New Building — Multi-Family, filed Nov 27, 2025, 3 units, 4 stories, described as “New four (4) story, three (3) dwelling unit building”
- Alteration, filed Sep 16, 2025, estimated cost $3K, described as “Installation of 8 ft construction fence.”
- Demolition, filed Sep 16, 2025, estimated cost $15K, described as “Full demolition of the existing garage.”

## Property taxes

- Assessment: $529,650
- 2026–27 tax: $50,788
- Market value (city estimate): $1,177,000
- Taxable value: $468,180
- Assessed land: $186,300
- Assessed improvements: $343,350

## Zoning

R5: floor area ratio 1.00 built, 1.50 allowed by base zoning.

## Recent sales

- Apr 2, 2025: $4,000,000, sold with other lots

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

## Flood zone

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

## Board and land use applications

- 18TH AVE REZONING (City Planning P2012K0038): Completed, decided Apr 25, 2012. A private rezoning from R5 and R5/C1-3 to R6A/C1-3 to facilitate the development of a mixed use building with retail and community facility uses in Brooklyn Community District 12.

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