770 Putnam Avenue, Brooklyn
Condominium · 3 units · built c. 1899 · Block 1651, Lot 7501.
Building permits
- Alteration, filed Jan 22, 2021, estimated cost $11K, described as “Interior construction work on the cellar to include removal and installation of partitions, doors, finishes. No change to use, egress or occupancy is involved.”
- Alteration, filed Jan 22, 2021, estimated cost $4K, described as “Interior renovation on the cellar include removal and installation of plumbing fixtures. No change to use, egress or occupancy is involved.”
Property taxes
- Assessment
- $265,260
- 2026–27 tax
- $20,662
- Market value (city estimate)
- $4,421,000
- Taxable value
- $104,125
- Assessed land
- $27,000
- Assessed improvements
- $238,260
- Condo units with their own tax lots
- 3
Zoning
R6B: floor area ratio 2.41 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Sep 19, 2025: $1,538,000, Apt 1
- Jul 14, 2022: $1,365,000, Apt 1
- Mar 16, 2018: $955,000, Apt 1
- Aug 3, 2017: $999,000
- Jul 31, 2017: $999,000
Open-market sales since 2016, from the Department of Finance’s sales files.