NYC DOB record · B00877422-S1

1721 Ditmas Avenue

1721 Ditmas Avenue, Brooklyn, NY 11226

Alteration filing in Flatbush (West)-Ditmas Park-Parkville, 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 Aug 29, 2026 · Verify the source row

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1721 Ditmas Avenue 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 B00877422-S1 as a alteration filing at 1721 Ditmas Avenue, Brooklyn, NY 11226. Its latest published status category is Approved, dated Aug 26, 2026. The filing records 3 proposed stories and 1 proposed dwelling unit.

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
Aug 26, 2026
Proposed scale
3 proposed stories and 1 proposed dwelling unit
Complete building dossierView all 2 filings associated with BIN 3119448
FiledJul 19, 2023
Current recordApproved
Proposed scale3 stories
Recorded cost$72,100

What the filing says

A public-record reading of the proposed work.

Plumbing and heating fixtures for one family dwelling

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 2.5-story one-family home built in 1910, on a 5,300 sq ft lot.

Built
1910
Floors
2.5
Residential units
1
Building type
One-family home
Land use
One and two family homes
Zoning district
R1-2
Lot area
5,300 sq ft
Building area
3,882 sq ft
Historic district
Ditmas Park Historic District

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 1, 2026. They describe the tax lot, not this filing.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B00877422-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.

DOB filing number
B00877422-S1
BBL
3051810040
Review type
Standard Plan Examination
Existing stories
3
Proposed stories
3
Existing dwelling units
1
Proposed dwelling units
1