NYC DOB record · B01124786-I1

306 Carroll Street

306 Carroll Street, Brooklyn, NY 11231

Alteration filing in Carroll Gardens-Cobble Hill-Gowanus-Red Hook, 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. What every status means

ApprovedAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Nov 6, 2026 · Verify the source row

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NYC DOB RECORD · B01124786-I1

306 Carroll Street

Brooklyn, NY 11231

Alteration filing · status dated Nov 4, 2026

Current record
Approved
Proposed scale
Not stated
Dwelling units
2
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 B01124786-I1 as a alteration filing at 306 Carroll Street, Brooklyn, NY 11231. Its latest published status category is Approved, dated Nov 4, 2026. The filing records 2 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
Nov 4, 2026
Proposed scale
2 proposed dwelling units
The building, not the filingthe owner of record and every filing at BIN 3007587Applicant of recordSee the 264 filings that name Hamann Engineering, PLLC
FiledOct 10, 2024
Current recordApproved
Proposed scale2 units
Recorded cost$9,000

What the filing says

A public-record reading of the proposed work.

Installation of the construction fence as per plans filed herewith, no change in use, egress and 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 two-family home built in 1873, on a 1,455 sq ft lot.

Built
1873
Floors
2
Residential units
2
Building type
Two-family home
Land use
One and two family homes
Zoning district
R6B
Lot area
1,455 sq ft
Building area
2,433 sq ft
Historic district
Carroll Gardens Historic District

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Nov 6, 2026. They describe the tax lot, not this filing.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B01124786-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 “Permit Entire.”

    04

For scale: half of DOB filings are permitted within 22 days of being filed and a quarter take longer than 4 months, measured across 92,577 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
B01124786-I1
BBL
3004500039
Review type
Professional Certification
Existing stories
Empty in the source
Proposed stories
Empty in the source
Existing dwelling units
2
Proposed dwelling units
2