Alteration filingAug 26
DOB filing B01078248-I1
Alteration filing at 850 Grand Street
Approved$60,000 recorded cost
Open filing Building record · BIN 3325733
850 Grand Street
850 Grand Street, Brooklyn, NY 11211
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 2 independently sourced records, including 2 that are not recorded as completed, closed or withdrawn.
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings2
Open or active-status records2
First included filingJul 10, 2026
Latest recorded changeAug 26, 2026
The lot
What is already here?
The lot holds a 3-story educational building built in 1981, on a 545,220 sq ft lot.
- Built
- 1981
- Last altered
- 2007
- Floors
- 3
- Residential units
- 0
- Building type
- Educational building
- Land use
- Public facilities and institutions
- Zoning district
- R6
- Lot area
- 545,220 sq ft
- Building area
- 446,763 sq ft
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 1, 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 3325733. 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 2 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Jul 10, 2026
- Latest recorded change
- Aug 26, 2026
- Highest proposed story count
- Not stated
- Highest proposed unit count
- Not stated
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
File mechanical work to install (3)split HVAC units at roof above 4th fl public school k450. no change in use, egress, or occupancy. Filing B01078248-I1.
- Alteration filed02
File mechanical work to install (3)split HVAC units at roof above 4th fl public school k450. no change in use, egress, or occupancy. Filing B01080257-I1.
- Alteration approved03
Filing B01078248-I1 reached an approved status.
- Alteration now approved04
The latest status recorded for B01078248-I1 is “Approved.”
- Alteration approved05
Filing B01080257-I1 reached an approved status.
- Alteration now approved06
The latest status recorded for B01080257-I1 is “Approved.”