NYC DOB record · B01428156-I1

521 Dean Street

521 Dean Street, Brooklyn, NY 11217

Alteration filing in Prospect Heights, Brooklyn. The latest DOB status is approved.

A plan examiner has approved the application. A permit still has to be issued before work can begin. What every status means

ApprovedAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Oct 2, 2026 · Verify the source row

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NYC DOB RECORD · B01428156-I1

521 Dean Street

Brooklyn, NY 11217

Alteration filing · status dated Sep 29, 2026

Current record
Approved
Proposed scale
4 stories
Dwelling units
10
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 B01428156-I1 as a alteration filing at 521 Dean Street, Brooklyn, NY 11217. Its latest published status category is Approved, dated Sep 29, 2026. The filing records 4 proposed stories and 10 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
Sep 29, 2026
Proposed scale
4 proposed stories and 10 proposed dwelling units
Applicant of recordSee the 99 filings that name Nkm Engineering PLLC
FiledJul 14, 2026
Current recordApproved
Proposed scale4 stories
Recorded cost$8,000

What the filing says

A public-record reading of the proposed work.

Extend existing chimney above roof to achieve code-compliant termination height. Install matching brick masonry, extend flue liner as required, and provide new concrete crown and chimney cap. No change in use, egress, occupancy, or floor area.

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 walk-up apartment building built in 1930, with 10 homes, on a 3,135 sq ft lot.

Built
1930
Last altered
1990
Residential units
10
Building type
Walk-up apartment building
Land use
Walk-up apartments
Zoning district
R6B
Lot area
3,135 sq ft
Building area
7,428 sq ft

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Oct 2, 2026. They describe the tax lot, not this filing.

Violation record

Are there open violations here?

The Department of Buildings has 1 open notice on record for this building, out of 5 notices on file; the most recent was issued Jul 25, 1994.

  • Local law 62/91 - boilers

    Issued Jul 25, 1994

Open means the agency has not recorded a resolution, which is not the same as the problem still existing. What a violation is, and what it is not. From NYC Department of Buildings, DOB Violations (3h2n-5cm9), accessed Oct 2, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B01428156-I1.

    01
  2. Application approved

    The application reached an approved status in the DOB record.

    02
  3. Current status updated

    The latest recorded filing status is “Approved.”

    03

For scale: half of DOB filings are permitted within 21 days of being filed and a quarter take longer than 4 months, measured across 73,707 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
B01428156-I1
BIN
3027629
BBL
3011280076
Review type
Standard Plan Examination
Existing stories
4
Proposed stories
4
Existing dwelling units
10
Proposed dwelling units
10
General construction