NYC DOB record · B01189666-S1

121 East 54 Street

121 East 54 Street, Brooklyn, NY 11203

Alteration filing in East Flatbush-Rugby, 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.

ApprovedAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Sep 5, 2026 · Verify the source row

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121 East 54 Street record graphic showing the DOB filing status and stated proposal scale
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 B01189666-S1 as a alteration filing at 121 East 54 Street, Brooklyn, NY 11203. Its latest published status category is Approved, dated Sep 3, 2026. The filing records 3 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 3, 2026
Proposed scale
3 proposed dwelling units
Applicant of recordSee the 32 filings that name Think Design Architecture
FiledApr 8, 2025
Current recordApproved
Proposed scale3 units
Recorded cost$18,000

What the filing says

A public-record reading of the proposed work.

Application filed to remove &replace gas piping in association with b01189666-i1 for legalization of gas fired fixtures at cellar level of existing 2 story 3 family residential building. no change in use, egress or occupancy 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 2-story walk-up apartment building built in 1920, with 3 homes, on a 2,800 sq ft lot.

Built
1920
Floors
2
Residential units
3
Building type
Walk-up apartment building
Land use
Walk-up apartments
Zoning district
R6
Lot area
2,800 sq ft
Building area
2,760 sq ft

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 5, 2026. They describe the tax lot, not this 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 5, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B01189666-S1.

    01
  2. Application approved

    The application reached an approved status in the DOB record.

    02
  3. First permit date recorded

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

    03
  4. Current status updated

    The latest recorded filing status is “Permit Entire.”

    04

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
B01189666-S1
BIN
3100955
BBL
3046410037
Review type
Professional Certification
Existing stories
Empty in the source
Proposed stories
Empty in the source
Existing dwelling units
3
Proposed dwelling units
3