6813 20th Avenue, Brooklyn
Mixed use · 2 units · built c. 1931 · Block 5579, Lot 4.
Building permits
- Alteration, filed Jan 7, 2026, estimated cost $38K, described as “Replace a heating & cooling commercial packaged unit at 1ST floor roof. No change in use, occupancy and means of egress”
- No Work, filed Jul 27, 2022
Property taxes
- Assessment
- $325,800
- 2026–27 tax
- $32,414
- Market value (city estimate)
- $724,000
- Taxable value
- $298,800
- Assessed land
- $80,100
- Assessed improvements
- $245,700
Zoning
R5: floor area ratio 1.52 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.