NYC DOB record · B00542929-I1

21 Polhemus Place

21 Polhemus Place, Brooklyn, NY 11215

Alteration filing in Park 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. What every status means

Recorded as completedAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Sep 14, 2026 · Verify the source row

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NYC DOB RECORD · B00542929-I1

21 Polhemus Place

Brooklyn, NY 11215

Alteration filing · status dated Sep 12, 2022

Current record
Recorded as completed
Proposed scale
4 stories
Dwelling units
8
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 B00542929-I1 as a alteration filing at 21 Polhemus Place, Brooklyn, NY 11215. Its latest published status category is Recorded as completed, dated Sep 12, 2022. The filing records 4 proposed stories and 8 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
Recorded as completed
Latest status date
Sep 12, 2022
Proposed scale
4 proposed stories and 8 proposed dwelling units
The building, not the filingEvery filing at BIN 3024890, with the parcel and violation recordApplicant of recordSee the 57 filings that name James Chai & Associates
FiledJul 20, 2021
Current recordRecorded as completed
Proposed scale4 stories
Recorded cost$619,000

What the filing says

A public-record reading of the proposed work.

RENOVATE (8) APT UNITS & COMMON HALLWAY FROM CELLAR TO ROOF, INCLUDE REMOVING AND INSTALLING NEW INTERIOR NON-LOAD BEARING PARTITIONS,, MECHANICAL, LIGHTING AND FINISH WORK. NO CHANGE TO USE, EGRESS OR OCCUPANCY. PL filed seperately

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 3-story walk-up apartment building built in 1898, with 7 homes, on a 1,584 sq ft lot.

Built
1898
Floors
3
Residential units
7
Building type
Walk-up apartment building
Land use
Walk-up apartments
Zoning district
R6B
Lot area
1,584 sq ft
Building area
3,212 sq ft
Historic district
Park Slope Historic District

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 21, 2026. They describe the tax lot, not this filing.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B00542929-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

For scale: half of DOB filings are permitted within 21 days of being filed and a quarter take longer than 4 months, measured across 74,561 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
B00542929-I1
BBL
3010700005
Review type
Professional Certification
Existing stories
4
Proposed stories
4
Existing dwelling units
8
Proposed dwelling units
8
General constructionmechanical