6423 20th Avenue, Brooklyn
Two-family with store · built c. 1931 · Block 5549, Lot 1.
Building permits
- No Work, filed Jul 27, 2026
- Alteration, filed Oct 23, 2025, estimated cost $283K, described as “Interior renovation with partition works and install new tables and chairs for first floor existing restaurant. Install new fire walls and fire doors for cellar protection of openings in fire walls. No change of use, egress or occupancy.”
Property taxes
- Assessment
- $118,440
- 2026–27 tax
- $10,739
- Market value (city estimate)
- $1,974,000
- Taxable value
- $54,121
- Assessed land
- $17,280
- Assessed improvements
- $101,160
Zoning
R5: floor area ratio 2.00 built, above the 1.50 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Dec 20, 2024: $4,500,000, sold with other lots
Open-market sales since 2016, from the Department of Finance’s sales files.