# 18 Williams Ave, Jersey City

Single family · built c. 1890 · Block 20501, Lot 55.

On Umarelli: https://umarelli.org/jersey-city/20501/55/18-williams-ave

More construction in West Side: https://umarelli.org/jersey-city/west-side/west-side.md

Every lot on block 20501: https://umarelli.org/jersey-city/20501.md

## Building permits

- Alteration, issued Dec 3, 2025, estimated cost $13K, described as “Replace steam boiler & existing backflow preventer”
- Alteration, issued Jan 20, 2012, described as “Remove old asphalt roof & install partial upper roof only”
- Alteration, issued Mar 7, 2011, described as “Replace boiler.”
- Alteration, issued Jun 24, 2005, described as “Water heater”
- Alteration, issued Apr 28, 1999, described as “Siding on house vinyl siding”

## Property taxes

- Assessment: $224,000
- 2025 tax: $5,230
- Assessed land: $98,400
- Assessed improvements: $125,600
- Last sale: $130,000 in 1997

## Zoning

R-1 (Neighborhood Housing).

## 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