45 Prospect Park Sw, Brooklyn
Single family · built c. 1920 · Block 1107, Lot 12.
Building permits
- Major Renovation — Enlargement, filed Oct 19, 2026, estimated cost $953K, 1 unit added, 4 stories, described as “Construct 4 story+penthouse two family residence with existing foundation elements to remain. Vertical and horizontal enlargements. Construct new exterior walls, fenestration, new interior partitions, stairs, finishes, and cabinetry…”
Property taxes
- Assessment
- $82,260
- 2026–27 tax
- $2,883
- Market value (city estimate)
- $1,371,000
- Taxable value
- $14,530
- Assessed land
- $17,880
- Assessed improvements
- $64,380
Zoning
R6A: floor area ratio 0.65 built, 3.00 allowed by base zoning.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard.
Recent sales
- Jan 6, 2023: $1,200,000, 720 sq ft ($1,667 per sq ft)
Open-market sales since 2016, from the Department of Finance’s sales files.