NYC DOB record · B01408705-S4

421 Hart Street

421 Hart Street, Brooklyn, NY 11221

Alteration filing in Bedford-Stuyvesant (East), Brooklyn. The latest DOB status is objections.

The examiner raised objections. The applicant has to resolve them before the filing can be approved. What every status means

Under reviewAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Sep 12, 2026 · Verify the source row

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NYC DOB RECORD · B01408705-S4

421 Hart Street

Brooklyn, NY 11221

Alteration filing · status dated Sep 9, 2026

Current record
Under review
Proposed scale
Not stated
Dwelling units
9
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 B01408705-S4 as a alteration filing at 421 Hart Street, Brooklyn, NY 11221. Its latest published status category is Under review, dated Sep 9, 2026. The filing records 9 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
Under review
Latest status date
Sep 9, 2026
Proposed scale
9 proposed dwelling units
Complete building dossierView all 5 filings associated with BIN 3043058Applicant of recordSee the 6 filings that name BGM Engneering
FiledJun 24, 2026
Current recordUnder review
Proposed scale9 units
Recorded cost$10,000

What the filing says

A public-record reading of the proposed work.

Foundation \ Earthwork in conjunction with the ALT-I application filed in BIS 321253558.

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 2-story two-family home built in 1899, on a 2,000 sq ft lot.

Built
1899
Last altered
2015
Floors
2
Residential units
2
Building type
Two-family home
Land use
One and two family homes
Zoning district
C4-4L
Lot area
2,000 sq ft
Building area
2,160 sq ft

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 12, 2026. They describe the tax lot, not this filing.

Violation record

Are there open violations here?

The Department of Buildings has 8 open notices on record for this building, out of 10 notices on file; the most recent was issued Apr 13, 2022.

  • Fail to certify class

    Issued Apr 13, 2022 — FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION

  • Construction

    Issued Nov 14, 2019

  • Construction

    Issued Nov 14, 2019

  • 5 further open notices are on file. Open the source dataset for the full list.

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 11, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B01408705-S4.

    01
  2. Current status updated

    The latest recorded filing status is “Objections.”

    02

For scale: half of DOB filings are permitted within 18 days of being filed and a quarter take longer than 4 months, measured across 50,115 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
B01408705-S4
BBL
3015930048
Review type
Standard Plan Examination
Existing stories
Empty in the source
Proposed stories
Empty in the source
Existing dwelling units
4
Proposed dwelling units
9
Foundation workEarthwork