6804 20th Avenue, Brooklyn
Single family with store · built c. 1931 · Block 5578, Lot 39.
Building permits
- Alteration, filed Dec 11, 2024, estimated cost $20K, described as “Install (3) new boilers for existing 2-family dwelling and (1)commercial store in cellar as per plan. No change in use, egress or occupancy under this application.”
- Alteration, filed Dec 11, 2024, estimated cost $30K, described as “Renovation of existing cellar and second floor with plumbing work:relocate kitchen and bathroom fixtures; new boilers and hot water heaters on cellar; no change in use, egress or occupancy under this application.”
- Alteration, filed Dec 11, 2024, estimated cost $100K, described as “Renovation of existing cellar and second floor with general construction:new partitions, doors, flooring and cosmetic work; no change in use, egress or occupancy under this application.”
- Alteration, filed Dec 2, 2020, estimated cost $2K, described as “Proposed replace existing boiler in existing 2 story building. Plumbing works as per plan. No change in use, egress and occupancy.”
- Alteration, filed Dec 2, 2020, estimated cost $2K, described as “Proposed replace existing boiler in existing 2 story building. Plumbing works as per plan. No change in use, egress and occupancy.”
Property taxes
- Assessment
- $83,580
- 2026–27 tax
- $8,744
- Market value (city estimate)
- $1,393,000
- Taxable value
- $44,064
- Assessed land
- $14,100
- Assessed improvements
- $69,480
Zoning
R5: floor area ratio 1.28 built, 1.50 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Nov 15, 2024: $990,000
Open-market sales since 2016, from the Department of Finance’s sales files.