8729 20th Avenue, Brooklyn
Single family with store · built c. 1910 · Block 6409, Lot 15.
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.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
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.