Alteration filingJul 22
DOB filing B00468131-I1
Alteration filing at 831 Knickerbocker Avenue
Recorded as completed$435,600 recorded cost
Open filing Building record · BIN 3079360
831 Knickerbocker Avenue
831 Knickerbocker Avenue, Brooklyn, NY 11207
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 4 independently sourced records, including 1 that are not recorded as completed, closed or withdrawn.
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings4
Open or active-status records1
First included filingMay 11, 2021
Latest recorded changeJul 22, 2026
The lot
What is already here?
The lot holds a 2-story condominium built in 1931, on a 3,667 sq ft lot.
- Built
- 1931
- Floors
- 2
- Building type
- Condominium
- Zoning district
- R6
- Lot area
- 3,667 sq ft
- Building area
- 7,600 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 3079360. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 4 alteration filing. Its latest status categories are 3 recorded as completed, 1 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- May 11, 2021
- Latest recorded change
- Jul 22, 2026
- Highest proposed story count
- Not stated
- Highest proposed unit count
- 8 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 4 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Proposed sprinkler and plumbing in conjunction with Alt-1 # 321599034. Filing B00468131-I1.
- Alteration filed02
New ductless hvac and hot water heaters for mixed used building. Filing B00468131-S1.
- Alteration filed03
Temporary fence installation. Filing B00468131-S2.
- Alteration approved04
Filing B00468131-S2 reached an approved status.
- Alteration approved05
Filing B00468131-S1 reached an approved status.
- Alteration approved06
Filing B00468131-I1 reached an approved status.
- Permit recorded for alteration07
DOB lists a first permit date for B00468131-S2. That is not by itself confirmation of activity on site.
- Permit recorded for alteration08
DOB lists a first permit date for B00468131-S1. That is not by itself confirmation of activity on site.
- Permit recorded for alteration09
DOB lists a first permit date for B00468131-I1. That is not by itself confirmation of activity on site.
- Alteration signed off010
DOB recorded a sign-off for B00468131-S2.
- Alteration now completed011
The latest status recorded for B00468131-S2 is “LOC Issued.”
- Alteration filed012
New ductless hvac and hot water heaters for mixed used building. Filing B00468131-A5.
- Alteration approved013
Filing B00468131-A5 reached an approved status.
- Alteration now approved014
The latest status recorded for B00468131-A5 is “Approved.”
- Alteration signed off015
DOB recorded a sign-off for B00468131-S1.
- Alteration now completed016
The latest status recorded for B00468131-S1 is “LOC Issued.”
- Alteration signed off017
DOB recorded a sign-off for B00468131-I1.
- Alteration now completed018
The latest status recorded for B00468131-I1 is “LOC Issued.”