431A Alter Avenue, Staten Island
Single family · Block 3375, Lot 19.
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Building permits
Permit records are unavailable right now; the map lists them once the city responds.
Property taxes
- Assessment
- $43,260
- 2026–27 tax
- $8,383
- Market value (city estimate)
- $721,000
- Taxable value
- $42,245
- Assessed land
- $6,180
- Assessed improvements
- $37,080
Zoning
R3-1: floor area ratio 0.70 built, 0.75 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Sep 4, 2024: $870,000
Open-market sales since 2016, from the Department of Finance’s sales files.