NYC DOB record · B01474990-I1

421 Grand Avenue

421 Grand Avenue, Brooklyn, NY 11238

Alteration filing in Clinton Hill, Brooklyn. The latest DOB status is permit entire.

DOB has issued the permit covering the full scope of this filing, so the work is cleared to proceed. What every status means

ApprovedAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Oct 19, 2026 · Verify the source row

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NYC DOB RECORD · B01474990-I1

421 Grand Avenue

Brooklyn, NY 11238

Alteration filing · status dated Oct 15, 2026

Current record
Approved
Proposed scale
Not stated
Dwelling units
6
Filing data portrait

A page-specific reading of the filing status, location and stated scale. Values are drawn from the cited DOB record.

Address record at a glance

What is filed at this address?

NYC DOB lists filing B01474990-I1 as a alteration filing at 421 Grand Avenue, Brooklyn, NY 11238. Its latest published status category is Approved, dated Oct 15, 2026. The filing records 6 proposed dwelling units.

A filing or approval does not by itself confirm that work is underway. Proposed details may change in later DOB records.
Filing type
Alteration filing
Latest status
Approved
Latest status date
Oct 15, 2026
Proposed scale
6 proposed dwelling units
Applicant of recordSee the 483 filings that name Mchenery Testing Lab
FiledOct 15, 2026
Current recordApproved
Proposed scale6 units
Recorded cost$8,000

What the filing says

A public-record reading of the proposed work.

Proposed installation of temporary pipe scaffold as per plans. work shall comply with chapter #33 of the NYC building code. no change in use, occupancy, or egress under this application.

Street Futures classifies this record as a alteration filing based on the filing type and work flags published by the Department of Buildings. This classification helps organize the map; it does not add scope that is absent from the DOB record.

The lot this filing sits on

What is already here?

The lot holds a 4-story walk-up apartment building built in 1872, with 6 homes, on a 2,385 sq ft lot.

Built
1872
Floors
4
Residential units
6
Building type
Walk-up apartment building
Land use
Walk-up apartments
Zoning district
R6B
Lot area
2,385 sq ft
Building area
3,540 sq ft
Historic district
Clinton Hill Historic District

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Oct 19, 2026. They describe the tax lot, not this filing.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B01474990-I1.

    01
  2. First permit date recorded

    DOB lists a first permit date. This does not by itself confirm current construction activity.

    02
  3. Current status updated

    The latest recorded filing status is “Permit Entire.”

    03

For scale: half of DOB filings are permitted within 22 days of being filed and a quarter take longer than 4 months, measured across 83,058 filings that carry both dates. How long a permit takes, by work type and borough

Scope and identifiers

The details used to match this filing.

Where a field reads “empty in the source”, the city published this filing without that value. It is not an omission on our side, and nothing here is inferred to fill a gap.

DOB filing number
B01474990-I1
BIN
3056806
BBL
3019820010
Review type
Professional Certification
Existing stories
Empty in the source
Proposed stories
Empty in the source
Existing dwelling units
6
Proposed dwelling units
6
Scaffolding