# 275 Adelphi Street, Brooklyn

Two-family · built c. 1871 · Block 2104, Lot 23.

On Umarelli: https://umarelli.org/nyc/3021040023/275-adelphi-street

More construction in Fort Greene: https://umarelli.org/nyc/brooklyn/fort-greene.md

Every lot on block 2104: https://umarelli.org/nyc/brooklyn/2104.md

## Building permits

- Alteration, filed Apr 17, 2026, estimated cost $35K, described as “Proposed work is limited to only at the 4th floor. The renovation includes installation of non-structural partition wall in the living room. Existing floor opening in the laundry room to be in-filled with new joists and wood flooring. No…”

## Property taxes

- Assessment: $222,300
- 2026–27 tax: $19,528
- Market value (city estimate): $3,705,000
- Taxable value: $98,410
- Assessed land: $26,700
- Assessed improvements: $195,600

## Zoning

R6B: floor area ratio 2.35 built, above the 2.00 base zoning allows, which bonuses, transfers or older rules can permit.

## Recent sales

- Jan 5, 2024: $5,350,000
- Jul 19, 2021: $4,800,000

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

## Flood zone

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

## Landmarks

Part of Fort Greene Historic District (Historic District). 7 Landmarks Preservation Commission permits are on file.

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