# 837 51st Street, Brooklyn

Two-family · built c. 1905 · Block 5644, Lot 63.

On Umarelli: https://umarelli.org/nyc/3056440063/837-51-street

More construction in Borough Park: https://umarelli.org/nyc/brooklyn/borough-park.md

## Building permits

- Alteration, filed Sep 18, 2026, estimated cost $55K, described as “File mechanical work type. Install ventilation exhaust systems for bathroom and kitchen at 1ST thru 4TH floor and roof. All general construction work filed under JOB#B01188632-I1.”
- Alteration, filed Dec 5, 2025, estimated cost $3K, described as “Installation of a temporarily heavy-duty sidewalk shed per plan submitted. Work shall comply with 2022 building codes chapter 33. No change in use, egress and/or occupancy with this application.”
- Alteration, filed Sep 26, 2025, estimated cost $20K, described as “Install new construction wood fence at open space only.in conjunction with alt-co JOB#B01188632-I1.”
- Major Renovation — Enlargement, filed Mar 21, 2025, estimated cost $985K, 2 units added, 4 stories, described as “Proposed horizontal and vertical enlargement on a 2 story building. Obtain new 4 family c of o.”

## Property taxes

- Assessment: $90,720
- 2026–27 tax: $8,352
- Market value (city estimate): $1,512,000
- Taxable value: $42,046
- Assessed land: $23,040
- Assessed improvements: $67,680

## Zoning

R6: floor area ratio 1.04 built, 2.43 allowed by base zoning.

## 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