6801 21st Avenue, Brooklyn
Apartment building · 48 units · built c. 1931 · Block 5580, Lot 6.
Building permits
- Alteration, filed Nov 4, 2022, estimated cost $25K, described as “Decommission of existing Sprint site. Remove antennas and equipment from the roof. Service connection in basement. Initial installation approved under application #300555423”
- Alteration, filed Sep 24, 2019, estimated cost $1K, described as “Installation of temporary sidewalk shed as per plans. No change in use, egress or occupancy.sidewalk shed shall comply with chapter #33 of the NYC building code.live load 300PSF.”
- Alteration, filed May 9, 2018, estimated cost $7K, described as “Modification to existing at&t telecommunications site. Replace (3) antennas with (3) related rrh units and install (3) rrh units on roof. All in conformance with tppn 5/98. No change in use, egress or occupancy.”
Property taxes
- Assessment
- $1,145,250
- 2026–27 tax
- $135,416
- Market value (city estimate)
- $2,545,000
- Taxable value
- $1,088,640
- Assessed land
- $122,400
- Assessed improvements
- $1,022,850
Zoning
R5: floor area ratio 4.56 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.