23 Adelphi Street, Brooklyn
Apartment building · 8 units · built c. 1915 · Block 2032, Lot 13.
Building permits
- Alteration, filed Mar 29, 2021, estimated cost $5K, described as “Amend plumbing riser diagrams on plan P-001 to show that new piping is provided only for the new bathroom. All other water and gas piping was existing.”
Property taxes
- Assessment
- $841,500
- 2026–27 tax
- $17,746
- Market value (city estimate)
- $1,870,000
- Taxable value
- $142,665
- Assessed land
- $45,000
- Assessed improvements
- $796,500
Zoning
M1-2: floor area ratio 2.20 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
- Mar 9, 2023: $2,500,000
Open-market sales since 2016, from the Department of Finance’s sales files.