# 403 Jefferson Avenue, Brooklyn

Single family · built c. 1915 · Block 1830, Lot 48.

On Umarelli: https://umarelli.org/nyc/3018300048/403-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

- Alteration, filed Oct 16, 2025, estimated cost $25K, described as “Application for elevated rear deck at ground floor elevation.”
- Alteration, filed Apr 22, 2025, estimated cost $40K, described as “Mechanical work in conjunction with B00765026”
- Alteration, filed Sep 23, 2024, estimated cost $93K, described as “Plumbing work in conjunction with B00765026”
- Alteration, filed Apr 12, 2023, estimated cost $25K, described as “Rep & rel 2 fix bath, repla (1)kitchen sink, (1) dishwasher, prop (4) fixtures, remove & seal (1) stove at basement, prop (4) fixt, remove & seal (4) fixtures at 1st fl, remove cap & seal (2) fix and gas stove, replace (3) fixtures, prop…”
- Alteration, filed Apr 10, 2023, estimated cost $446K, described as “Application file for cellar to be in conjunction with the 1ST & 2ND floor to have control over boiler room equipment. New bathrooms, new kitchens, new flooring over existing. Propose hwh for both units.no change of use, egress or occupancy.”

## Property taxes

- Assessment: $128,520
- 2026–27 tax: $5,151
- Market value (city estimate): $2,142,000
- Taxable value: $25,960
- Assessed land: $16,200
- Assessed improvements: $112,320

## Zoning

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

## Recent sales

- Dec 7, 2023: $2,240,000
- Feb 1, 2022: $2,050,000

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