# 281 Alter Avenue, Staten Island

Two-family · built 2025 · Block 3337, Lot 49.

On Umarelli: https://umarelli.org/nyc/5033370049/279-alter-avenue

More construction in Dongan Hills: https://umarelli.org/nyc/staten-island/dongan-hills.md

## Building permits

- New Building — Residential, filed Sep 5, 2025, 2 units, 3 stories, described as “Three-story two-family dwelling with accessory parking for one car.”
- Alteration, filed Sep 3, 2026, estimated cost $47K, described as “Filing herewith tax abatement application for installation of roof mounted solar panels. No change in use, egress or occupancy.”
- Alteration, filed Jan 13, 2026, estimated cost $29K, described as “Installation of new fire sprinkler system with valves and meters for same”
- Demolition, filed May 7, 2025, described as “Full demolition of a 1-story residential structure”

## Property taxes

- Assessment: $10,380
- 2026–27 tax: $2,060
- Market value (city estimate): $173,000
- Taxable value: $10,380
- Assessed land: $10,380

## Zoning

R3X: floor area ratio 0.75 built, 0.75 allowed by base zoning.

## Recent sales

- Apr 23, 2025: $575,000

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

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.

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