# 303 6th Avenue, Brooklyn

Co-op · 4 units · built c. 1920 · Block 971, Lot 2.

On Umarelli: https://umarelli.org/nyc/3009710002/303-6-avenue

More construction in Park Slope: https://umarelli.org/nyc/brooklyn/park-slope.md

Every lot on block 971: https://umarelli.org/nyc/brooklyn/971.md

## Building permits

- Alteration, filed Dec 16, 2022, estimated cost $18K, described as “Filed in conjunction with GC Filing B08054903-I1. Renovation of kitchenette and bathroom at apt 2, including relocation of fixtures.”
- Alteration, filed Dec 16, 2022, estimated cost $20K, described as “Filing for renovations/finishes for existing kitchenette and bathroom at apt 2. Plumbing filed under separate application. No change to use, egress or occupancy.”

## Property taxes

- Assessment: $1,008,450
- 2026–27 tax: $13,688
- Market value (city estimate): $2,241,000
- Taxable value: $128,024
- Assessed land: $9,900
- Assessed improvements: $998,550

## Tax breaks

- Co-op and condo abatement, with no end date, a $2,237 credit this tax year.

## Zoning

R6B: floor area ratio 2.73 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Jul 21, 2025: $1,850,000
- Aug 14, 2024: $1,580,000
- Jun 14, 2021: $1,435,000
- Dec 10, 2018: $1,310,000
- Aug 5, 2016: $1,300,000

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

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

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