# 309 Avenue X, Brooklyn

Vacant land · Block 7174, Lot 94.

On Umarelli: https://umarelli.org/nyc/3071740094/309-avenue-x

More construction in Ocean Parkway: https://umarelli.org/nyc/brooklyn/ocean-parkway.md

## Building permits

- New Building, filed May 29, 2025, 2 stories, described as “New two (2) story and cellar commercial building”
- Alteration, filed Jan 9, 2025, estimated cost $3K, described as “Installation of 8ft Construction Fence.”
- Demolition, filed Jan 2, 2025, estimated cost $10K, described as “Full demolition of Existing Building.”

## Property taxes

- Assessment: $5,880
- 2026–27 tax: $1,167
- Market value (city estimate): $98,000
- Taxable value: $5,880
- Assessed land: $5,880

## Zoning

R4: floor area ratio 0.00 built, 1.00 allowed by base zoning.

## Recent sales

- Aug 15, 2024: $710,000

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