399 Monroe Street, Brooklyn
Two-family · built c. 1899 · Block 1815, Lot 47.
Building permits
- Alteration, filed Mar 20, 2025, estimated cost $5K, described as “Proposed addition of new balcony & door @ 2ND floor only. No proposed change in use, egress or occupancy.”
Property taxes
- Assessment
- $123,900
- 2026–27 tax
- $3,770
- Market value (city estimate)
- $2,065,000
- Taxable value
- $19,000
- Assessed land
- $9,720
- Assessed improvements
- $114,180
Zoning
R6B: floor area ratio 1.85 built, 2.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Aug 29, 2024: $1,575,000
Open-market sales since 2016, from the Department of Finance’s sales files.