NYC DOB record · B00447694-I1

340 Frost Street

340 Frost Street, Brooklyn, NY 11222

Alteration filing in East Williamsburg, 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 31, 2026 · Verify the source row

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340 Frost 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 B00447694-I1 as a alteration filing at 340 Frost Street, Brooklyn, NY 11222. Its latest published status category is Approved, dated Jun 3, 2026. The filing records 56 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
Jun 3, 2026
Proposed scale
56 proposed dwelling units
Complete building dossierView all 4 filings associated with BIN 3327831
FiledJan 27, 2021
Current recordApproved
Proposed scale56 units
Recorded cost$239,960

What the filing says

A public-record reading of the proposed work.

Building 6 - Work in Tank room only- Demolition of steam and condensate piping, condensate pumps and vacuum pumps. Replacement of condensate pumps, vacuum pumps and piping. New flues for domestic hot water heaters

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 8-story elevator apartment building built in 1950, with 700 homes, on a 510,960 sq ft lot.

Built
1950
Floors
8
Residential units
700
Building type
Elevator apartment building
Land use
Elevator apartments
Zoning district
R6
Lot area
510,960 sq ft
Building area
611,340 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.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B00447694-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

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
B00447694-I1
BBL
3028670001
Review type
Standard Plan Examination
Existing stories
Empty in the source
Proposed stories
Empty in the source
Existing dwelling units
56
Proposed dwelling units
56