623 Union Avenue, Brooklyn
Two-family · built c. 1910 · Block 2292, Lot 17.
Building permits
- Alteration, filed Jun 11, 2022, estimated cost $224K, described as “Vertical Extension”
Property taxes
- Assessment
- $157,980
- 2026–27 tax
- $4,990
- Market value (city estimate)
- $2,633,000
- Taxable value
- $25,148
- Assessed land
- $17,940
- Assessed improvements
- $140,040
Zoning
M1-2/R6A: floor area ratio 1.35 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 10 ft (NGVD29). FEMA’s preliminary map: zone X, moderate risk: a 0.2% chance of flooding each year.
Recent sales
- Apr 14, 2022: $999,000
Open-market sales since 2016, from the Department of Finance’s sales files.