21 Polhemus Place, Brooklyn
Apartment building · 7 units · built c. 1898 · Block 1070, Lot 5.
Building permits
- Alteration, filed Jul 20, 2021, estimated cost $619K, described as “Renovate (8) apt units & common hallway from cellar to roof, include removing and installing new interior non-load bearing partitions,, mechanical, lighting and finish work. No change to use, egress or occupancy. Pl filed seperately”
- Alteration, filed Jul 20, 2021, estimated cost $106K, described as “File PL workt through the building in conjunction with OT job # B00542929”
Property taxes
- Assessment
- $1,130,850
- 2026–27 tax
- $35,783
- Market value (city estimate)
- $2,513,000
- Taxable value
- $287,668
- Assessed land
- $8,100
- Assessed improvements
- $1,122,750
Zoning
R6B: floor area ratio 2.03 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
- Dec 1, 2020: $2,300,000, 3,212 sq ft ($716 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.
Landmarks
Part of Park Slope Historic District (Historic District). 3 Landmarks Preservation Commission permits are on file.