227 20th Street, Brooklyn
Two-family · built c. 1910 · Block 637, Lot 55.
Building permits
- Alteration, filed May 27, 2026, estimated cost $180K, described as “Interior renovation of a 2-story townhouse with basement. New HVAC, electrical & new partitions.no change to use, egress or occupancy”
Property taxes
- Assessment
- $125,280
- 2026–27 tax
- $3,105
- Market value (city estimate)
- $2,088,000
- Taxable value
- $15,647
- Assessed land
- $18,120
- Assessed improvements
- $107,160
Zoning
R6B (part of the lot is R6A): floor area ratio 1.05 built, 2.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Feb 23, 2022: $1,250,000
Open-market sales since 2016, from the Department of Finance’s sales files.