Alteration filingApr 16
DOB filing B00472833-I1
Alteration filing at 309 Patchen Avenue
Recorded as completed$460,000 recorded cost
Open filing Building record · BIN 3325175
309 Patchen Avenue
309 Patchen Avenue, Brooklyn, NY 11233
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 3 independently sourced records, including 0 that are not recorded as completed, closed or withdrawn.
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings3
Open or active-status records0
First included filingJun 8, 2021
Latest recorded changeApr 16, 2026
The lot
What is already here?
The lot holds a 7-story elevator apartment building built in 1980, with 896 homes, on a 747,200 sq ft lot.
- Built
- 1980
- Floors
- 7
- Residential units
- 896
- Building type
- Elevator apartment building
- Land use
- Elevator apartments
- Zoning district
- R5
- Lot area
- 747,200 sq ft
- Building area
- 875,875 sq ft
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 2, 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 3325175. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 3 alteration filing. Its latest status categories are 3 recorded as completed. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Jun 8, 2021
- Latest recorded change
- Apr 16, 2026
- Highest proposed story count
- 7 stories
- Highest proposed unit count
- 35 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 3 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Hereby filing for the replacement of hot water heaters. no change to use occupancy or egress. Filing B00472833-I1.
- Alteration filed02
Hereby filing for new louvers to exhaust fans and air intakes, motarized dampers for air intakes, new exhaust fan. no change to use occupancy or egress. Filing B00484669-I1.
- Alteration filed03
Hereby filing for strural work - concrete pad. no change to use occupancy or egress. Filing B00484687-I1.
- Alteration approved04
Filing B00484687-I1 reached an approved status.
- Alteration approved05
Filing B00472833-I1 reached an approved status.
- Alteration approved06
Filing B00484669-I1 reached an approved status.
- Permit recorded for alteration07
DOB lists a first permit date for B00472833-I1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration08
DOB lists a first permit date for B00484669-I1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration09
DOB lists a first permit date for B00484687-I1. That is not by itself confirmation of activity on site.
- Alteration signed off010
DOB recorded a sign-off for B00484687-I1.
- Alteration now completed011
The latest status recorded for B00484687-I1 is “LOC Issued.”
- Alteration signed off012
DOB recorded a sign-off for B00484669-I1.
- Alteration now completed013
The latest status recorded for B00484669-I1 is “LOC Issued.”
- Alteration signed off014
DOB recorded a sign-off for B00472833-I1.
- Alteration now completed015
The latest status recorded for B00472833-I1 is “LOC Issued.”