# 448A 17th Street, Brooklyn

Single family · built c. 1910 · Block 876, Lot 13.

On Umarelli: https://umarelli.org/nyc/3008760013/448a-17-street

More construction in South Slope: https://umarelli.org/nyc/brooklyn/south-slope.md

## Building permits

- Major Renovation — Residential, filed Aug 21, 2025, estimated cost $458K, 1 unit in all, 3 stories, described as “Proposed one-story vertical enlargement on existing 2-story, one-dwelling unit, residential building. Obtain new certificates of occupancy.”
- Alteration, filed Jul 2, 2025, estimated cost $3K, described as “Installation of temporary construction fence at 448A 17 street, brooklyn, ny 11215 as indicated on plans. There will be no change in the use, egress, or occupancy under this application.”
- Alteration, filed Aug 22, 2023, estimated cost $5K, described as “Temporary construction fence”
- Alteration, filed Jan 8, 2021, estimated cost $5K, described as “Temporary construction fence”
- Alteration, filed Jan 6, 2021, estimated cost $25K, described as “Proposed plumbing for restoration of fire damage and sprinklers”

## Property taxes

- Assessment: $69,780
- 2026–27 tax: $2,303
- Market value (city estimate): $1,163,000
- Taxable value: $11,606
- Assessed land: $23,520
- Assessed improvements: $46,260

## Zoning

R5B: floor area ratio 0.99 built, 1.50 allowed by base zoning.

## Recent sales

- Jul 3, 2025: $1,211,718
- Dec 4, 2020: $625,000, 1,244 sq ft ($502 per sq ft)

Open-market sales since 2016, from the Department of Finance’s sales files.

## Flood zone

Current FEMA flood map: zone X, minimal flood hazard.

From New York City and Jersey City public records, refreshed within a day of each release. Sources: https://umarelli.org/sources. Methodology and corrections: https://umarelli.org/methodology