# 21 Gardner Ave, Jersey City

Single family · built c. 1890 · Block 16803, Lot 27.

On Umarelli: https://umarelli.org/jersey-city/16803/27/21-gardner-ave

More construction in Bergen Hill: https://umarelli.org/jersey-city/bergen-lafayette/bergen-hill.md

Every lot on block 16803: https://umarelli.org/jersey-city/16803.md

## Building permits

- Alteration, issued Apr 3, 2025, estimated cost $60K, 4 stories, described as “3-condo dwelling as per plans”
- Alteration, issued Feb 26, 2021, described as “Interior demolition in preparation for design drawings”
- Alteration, issued May 12, 2017, described as “Sewer cap”
- Alteration, issued May 18, 2012, described as “Install hot water heater & chimney liner”
- Alteration, issued Dec 23, 2011, described as “Replacement of gas hot water boiler”

## Property taxes

- Assessment: $332,100
- 2025 tax: $7,755
- Assessed land: $249,400
- Assessed improvements: $82,700
- Last sale: $600,000 in 2024

## Zoning

RH-1 (Residential Housing 1).

## Recent sales

- Nov 22, 2024: $600,000, 2,166 sq ft ($277 per sq ft)
- Sep 26, 2016: $129,000, sold with other lots

Open-market sales since mid-2019, from the state’s SR1A sales file.

## 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