Building record · BIN 3020886

321 4 Avenue

321 4 Avenue, Brooklyn, NY 11215

A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 6 independently sourced records, including 1 that are not recorded as completed, closed or withdrawn.

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BUILDING RECORD · BIN 3020886

321 4 Avenue

Park Slope, Brooklyn

A consolidated public-record view · updated Oct 26, 2023

DOB filings
6
Active-status
1
Recorded addresses
1
Building data portrait

A building-level summary of matched filings, active-status records and published identifiers.

Matched filings6
Open or active-status records1
First included filingFeb 21, 2018
Latest recorded changeOct 26, 2023

The lot

What is already here?

The lot holds a 4-story walk-up apartment building built in 1920, with 6 homes, on a 1,760 sq ft lot.

Built
1920
Floors
4
Residential units
6
Building type
Walk-up apartment building
Land use
Walk-up apartments
Zoning district
C4-4D
Lot area
1,760 sq ft
Building area
7,195 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.

Violation record

Are there open violations here?

No open violations are recorded for this building. 9 notices are on file, all with a recorded resolution.

A violation is a notice the Department of Buildings recorded against the building. It is not a judgment, and many concern paperwork rather than safety. Open means the agency has not recorded a resolution, which is not the same as the problem still existing. From NYC Department of Buildings, DOB Violations (3h2n-5cm9), accessed Sep 14, 2026.

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 3020886. They should not be read as a single construction project unless the underlying filings say so.

The matched set includes 6 alteration filing. Its latest status categories are 5 recorded as completed, 1 approved. Each filing page preserves its own status, dates, scope and source identifier.

First included filing
Feb 21, 2018
Latest recorded change
Oct 26, 2023
Highest proposed story count
4 stories
Highest proposed unit count
6 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 6 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.

  1. Alteration filed

    Installation of heavy duty sidewalk shed during building alteration, filed separately. sidewalk shed shall comply with chapter #33 of the NYC building code. no change in use, occupancy or egress under this application. Filing B00021321-I1.

    01
  2. Alteration filed

    Installation of scaffold as per drawings. scaffold shall comply with chapter #33 of the NYC building code. no change in use, occupancy or egress under this application. Filing B00021317-I1.

    02
  3. Permit recorded for alteration

    DOB lists a first permit date for B00021317-I1. That is not by itself confirmation of activity on site.

    03
  4. Permit recorded for alteration

    DOB lists a first permit date for B00021321-I1. That is not by itself confirmation of activity on site.

    04
  5. Alteration filed

    Installation of temporary sidewalk shed per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application. Filing B00501260-I1.

    05
  6. Alteration approved

    Filing B00501260-I1 reached an approved status.

    06
  7. Alteration filed

    Filing for temporary shoring of 2nd floor; no change to use, egress or occupancy . Filing B00508395-I1.

    07
  8. Alteration approved

    Filing B00508395-I1 reached an approved status.

    08
  9. Alteration filed

    Filing for temporary shoring of 2nd floor; no change to use, egress or occupancy . Filing B00508395-P1.

    09
  10. Alteration approved

    Filing B00508395-P1 reached an approved status.

    010
  11. Alteration now approved

    The latest status recorded for B00508395-P1 is “Approved.”

    011
  12. Alteration filed

    Installation of temporary construction fence per plan submitted. Work shall comply with 2014 building codes chapter 33. No change in use, egress and/or occupancy with this application. Filing B00503533-I1.

    012
  13. Alteration approved

    Filing B00503533-I1 reached an approved status.

    013
  14. Permit recorded for alteration

    DOB lists a first permit date for B00501260-I1. That is not by itself confirmation of activity on site.

    014
  15. Permit recorded for alteration

    DOB lists a first permit date for B00503533-I1. That is not by itself confirmation of activity on site.

    015
  16. Permit recorded for alteration

    DOB lists a first permit date for B00508395-I1. That is not by itself confirmation of activity on site.

    016
  17. Alteration signed off

    DOB recorded a sign-off for B00021317-I1.

    017
  18. Alteration now completed

    The latest status recorded for B00021317-I1 is “LOC Issued.”

    018
  19. Alteration signed off

    DOB recorded a sign-off for B00021321-I1.

    019
  20. Alteration now completed

    The latest status recorded for B00021321-I1 is “LOC Issued.”

    020
  21. Alteration signed off

    DOB recorded a sign-off for B00501260-I1.

    021
  22. Alteration now completed

    The latest status recorded for B00501260-I1 is “LOC Issued.”

    022
  23. Alteration signed off

    DOB recorded a sign-off for B00503533-I1.

    023
  24. Alteration now completed

    The latest status recorded for B00503533-I1 is “LOC Issued.”

    024
  25. Alteration signed off

    DOB recorded a sign-off for B00508395-I1.

    025
  26. Alteration now completed

    The latest status recorded for B00508395-I1 is “LOC Issued.”

    026