Alteration filingAug 2
DOB filing B00485018-I1
Alteration filing at 850 50 Street
Recorded as completed$53,500 recorded cost
Open filing Building record · BIN 3137829
850 50 Street
850 50 Street, Brooklyn, NY 11220
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 2 independently sourced records, including 1 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 3137829
850 50 Street
Sunset Park (East)-Borough Park (West), Brooklyn
A consolidated public-record view · updated Aug 2, 2022
- DOB filings
- 2
- Active-status
- 1
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings2
Open or active-status records1
First included filingApr 6, 2021
Latest recorded changeAug 2, 2022
The lot
What is already here?
The lot holds a 4-story walk-up apartment building built in 1931, with 16 homes, on a 4,400 sq ft lot.
- Built
- 1931
- Last altered
- 2008
- Floors
- 4
- Residential units
- 16
- Building type
- Walk-up apartment building
- Land use
- Mixed residential and commercial
- Zoning district
- R6
- Lot area
- 4,400 sq ft
- Building area
- 14,080 sq ft
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 14, 2026. They describe the tax lot, not any single filing.
What is recorded here
Multiple filings, one stable building identifier.
New York City's Building Identification Number helps connect filings that may use different application numbers or describe different scopes of work. The records below are grouped because they publish BIN 3137829. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 2 alteration filing. Its latest status categories are 1 recorded as completed, 1 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Apr 6, 2021
- Latest recorded change
- Aug 2, 2022
- Highest proposed story count
- Not stated
- Highest proposed unit count
- 16 dwelling units
Highest recorded values may come from different filings and must not be combined into one proposed project. Open the individual filings below for their exact scope. Values outside the publication's conservative data-quality bounds are withheld pending source review.
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Recorded history
What has happened at this address?
Every dated event the city has published for this building, from all 2 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Installation of new Sprinkler system in cellar, new sprinkler water service/DCDA in existing legal Day Care Center in cellar level of mixed-use building. Filing B00485018-I1.
- Alteration approved02
Filing B00485018-I1 reached an approved status.
- Permit recorded for alteration03
DOB lists a first permit date for B00485018-I1. That is not by itself confirmation of activity on site.
- Alteration filed04
Installation of new Sprinkler system in cellar, new sprinkler water service/DCDA in existing legal Day Care Center in cellar level of mixed-use building. Filing B00485018-P1.
- Alteration approved05
Filing B00485018-P1 reached an approved status.
- Alteration now approved06
The latest status recorded for B00485018-P1 is “Approved.”
- Alteration signed off07
DOB recorded a sign-off for B00485018-I1.
- Alteration now completed08
The latest status recorded for B00485018-I1 is “LOC Issued.”