# 8729 20th Avenue, Brooklyn

Single family with store · built c. 1910 · Block 6409, Lot 15.

On Umarelli: https://umarelli.org/nyc/3064090015/8729-20-avenue

More construction in Bath Beach: https://umarelli.org/nyc/brooklyn/bath-beach.md

## Building permits

- Major Renovation — Conversion, filed Jul 9, 2026, estimated cost $2.9M, 18 units added, 5 stories, described as “Convert existing 2 story building to 5 story community facility and residential mix-use building with horizontal and vertical enlargement. Obtain new certificate of occupancy.”
- Alteration, filed Jul 6, 2026, estimated cost $10K, described as “Submit temporary construction fence at open space, no change in use, egress or occupancy.”

## Property taxes

- Assessment: $215,640
- 2026–27 tax: $14,689
- Market value (city estimate): $3,594,000
- Taxable value: $74,028
- Assessed land: $23,640
- Assessed improvements: $192,000

## Zoning

R5: floor area ratio 0.86 built, 1.50 allowed by base zoning.

## Recent sales

- Jul 2, 2026: $2,700,000, 5,824 sq ft ($464 per sq ft)

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