# 866 51st Street, Brooklyn

Apartment building · 5 units · built c. 1920 · Block 5651, Lot 34.

On Umarelli: https://umarelli.org/nyc/3056510034/866-51-street

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

## Building permits

- New Building — Multi-Family, filed Jul 26, 2022, estimated cost $2.5M, 15 units, 6 stories, described as “New construction of 6-story building with cellar for 15 residential units and community facility. Obtain a certificate of occupancy.”
- Alteration, filed Mar 21, 2025, estimated cost $6K, described as “Proposed temporary construction fence outside the property line but within 3 feet of the property line”
- Alteration, filed Dec 12, 2024, estimated cost $5K, described as “Installation of 300 psf sidewalk shed as per plans. All equipment shall comply with chapter #33 of the 2022 code. No change in use, egress or occupancy under this application.”
- Alteration, filed Dec 12, 2024, estimated cost $5K, described as “Installation of 300 psf sidewalk shed as per plans. All equipment shall comply with chapter #33 of the 2022 code. No change in use, egress or occupancy under this application.”
- Demolition, filed May 22, 2024, estimated cost $20K, described as “Full demolition for one car garage.”
- Demolition, filed May 10, 2024, estimated cost $80K, described as “Proposed full demolition of existing 2 story masonry building.”
- Demolition, filed May 2, 2024, estimated cost $80K, described as “Full demolition for one car garage.”
- Demolition, filed May 2, 2024, estimated cost $80K, described as “Proposed full demolition of existing 2 story masonry building.”
- Alteration, filed May 2, 2024, estimated cost $25K, described as “Proposed temporary construction fence outside the property line but within 3 feet of the property line”

## Property taxes

- Assessment: $235,463
- 2026–27 tax: $17,069
- Market value (city estimate): $523,250
- Taxable value: $137,224
- Assessed land: $154,800
- Assessed improvements: $80,663

## Zoning

R6: floor area ratio 1.01 built, 2.43 allowed by base zoning.

## Recent sales

- Mar 16, 2020: $1,750,000, 2,680 sq ft ($653 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.

## In the news

[Permits Filed for 866 51st Street in Sunset Park, Brooklyn](https://newyorkyimby.com/2022/07/permits-filed-for-866-51st-street-in-sunset-park-brooklyn.html), New York YIMBY, Jul 31, 2022.

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