# 405 Jefferson Avenue, Brooklyn

Two-family · built c. 1915 · Block 1830, Lot 47.

On Umarelli: https://umarelli.org/nyc/3018300047/405-jefferson-avenue

More construction in Bedford-Stuyvesant: https://umarelli.org/nyc/brooklyn/bedford-stuyvesant.md

Every lot on block 1830: https://umarelli.org/nyc/brooklyn/1830.md

## Building permits

No building permits on file for this lot.

## Property taxes

- Assessment: $143,640
- 2026–27 tax: $6,993
- Market value (city estimate): $2,394,000
- Taxable value: $35,240
- Assessed land: $16,380
- Assessed improvements: $127,260

## Zoning

R6B: floor area ratio 1.20 built, 2.00 allowed by base zoning.

## Recent sales

- Oct 8, 2025: $2,750,000
- Mar 13, 2020: $2,250,000, 2,400 sq ft ($938 per sq ft)
- Apr 30, 2019: $1,100,000

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