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NYC DOB record · B00978140-I1

421 17 Street

421 17 Street, Brooklyn, NY 11215

Alteration filing in Windsor Terrace-South Slope, Brooklyn. The latest DOB status is loc issued.

DOB has issued a Letter of Completion, which records that the work in this filing is finished.

Recorded as completedAlteration filing

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

Open full map
421 17 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 B00978140-I1 as a alteration filing at 421 17 Street, Brooklyn, NY 11215. Its latest published status category is Recorded as completed, dated Aug 31, 2026. The filing records 2 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
Recorded as completed
Latest status date
Aug 31, 2026
Proposed scale
2 proposed stories and 1 proposed dwelling unit
FiledJan 12, 2024
Current recordRecorded as completed
Proposed scale2 stories
Recorded cost$133,100

What the filing says

A public-record reading of the proposed work.

Interior renovation. remove and construction non-bearing or non-structural partitions. structural and plumbing work are filed separated. no change in use, egress or occupancy.

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 one-family home built in 1910, on a 1,150 sq ft lot.

Built
1910
Floors
2
Residential units
1
Building type
One-family home
Land use
One and two family homes
Zoning district
R5B
Lot area
1,150 sq ft
Building area
972 sq ft

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

Violation record

Are there open violations here?

No open violations are recorded for this building. 1 notice is 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 2, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B00978140-I1.

    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 “LOC Issued.”

    04
  5. Sign-off date recorded

    DOB lists a sign-off date for this filing.

    05

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
B00978140-I1
BIN
3016538
BBL
3008690052
Review type
Standard Plan Examination
Existing stories
2
Proposed stories
2
Existing dwelling units
1
Proposed dwelling units
1
General construction

Nearby records

Other verified filings in this part of the city.