# 5801 18th Avenue, Brooklyn

Two-family · built c. 1925 · Block 5505, Lot 9.

On Umarelli: https://umarelli.org/nyc/3055050009/5801-18-avenue

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

## Building permits

- Major Renovation — Enlargement, filed Jul 20, 2026, estimated cost $558K, 1 unit added, 3 stories, described as “Alteration of existing two story one family to three story two family building.”
- Alteration, filed Sep 25, 2025, estimated cost $13K, described as “Installation of heavy duty sidewalk shed. No change in use, occupancy or egress under this application, all work to comply with chapter 33 of nycbc.”
- Alteration, filed Sep 4, 2025, estimated cost $1K, described as “Installation of a temporary construction fence as per plans.”

## Property taxes

- Assessment: $170,460
- 2026–27 tax: $11,305
- Market value (city estimate): $2,841,000
- Taxable value: $56,971
- Assessed land: $27,240
- Assessed improvements: $143,220

## Zoning

R5: floor area ratio 1.11 built, 1.50 allowed by base zoning.

## Recent sales

- Aug 11, 2025: $2,550,000

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

## 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