NYC DOB record · B01180388-I1

304 Carroll Street

304 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 Sep 25, 2026 · Verify the source row

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NYC DOB RECORD · B01180388-I1

304 Carroll Street

Brooklyn, NY 11231

Alteration filing · status dated Sep 24, 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 B01180388-I1 as a alteration filing at 304 Carroll Street, Brooklyn, NY 11231. Its latest published status category is Approved, dated Sep 24, 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
Sep 24, 2026
Proposed scale
2 proposed dwelling units
The building, not the filingopen housing violations and every filing at BIN 3007586Applicant of recordSee the 233 filings that name Hamann Engineering, PLLC
FiledFeb 13, 2025
Current recordApproved
Proposed scale2 units
Recorded cost$7,800

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 1,406 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
1,406 sq ft
Building area
2,280 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 Sep 25, 2026. They describe the tax lot, not this filing.

Violation record

Are there open violations here?

The Department of Buildings has 3 open notices on record for this building, out of 6 notices on file; the most recent was issued Jun 27, 2023.

  • Landmark

    Issued Jun 27, 2023

  • Landmark

    Issued Jun 27, 2023

  • Plumbing

    Issued Nov 21, 1989

Open means the agency has not recorded a resolution, which is not the same as the problem still existing. What a violation is, and what it is not. From NYC Department of Buildings, DOB Violations (3h2n-5cm9), accessed Sep 25, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B01180388-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 21 days of being filed and a quarter take longer than 4 months, measured across 70,325 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
B01180388-I1
BBL
3004500038
Review type
Professional Certification
Existing stories
Empty in the source
Proposed stories
Empty in the source
Existing dwelling units
2
Proposed dwelling units
2