NYC DOB record · B00623184-I1

420 Classon Avenue

420 Classon Avenue, Brooklyn, NY 11238

Alteration filing in Clinton Hill, 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 14, 2026 · Verify the source row

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NYC DOB RECORD · B00623184-I1

420 Classon Avenue

Brooklyn, NY 11238

Alteration filing · status dated Jul 14, 2022

Current record
Approved
Proposed scale
3 stories
Dwelling units
12
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 B00623184-I1 as a alteration filing at 420 Classon Avenue, Brooklyn, NY 11238. Its latest published status category is Approved, dated Jul 14, 2022. The filing records 3 proposed stories and 12 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
Jul 14, 2022
Proposed scale
3 proposed stories and 12 proposed dwelling units
Applicant of recordSee the 14 filings that name Mayta + Sebastian Architecture DPC
FiledNov 9, 2021
Current recordApproved
Proposed scale3 stories
Recorded cost$10,000

What the filing says

A public-record reading of the proposed work.

Alt 2 filing for roof and railing repairs at building main roof. stair/ stoop repairs at front entry. 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 3-story condominium built in 1899, with 12 homes, on a 4,742 sq ft lot.

Built
1899
Last altered
2008
Floors
3
Residential units
12
Building type
Condominium
Land use
Walk-up apartments
Zoning district
R6B
Lot area
4,742 sq ft
Building area
9,175 sq ft

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 B00623184-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 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
B00623184-I1
BIN
3394252
BBL
3019727501
Review type
Professional Certification
Existing stories
3
Proposed stories
3
Existing dwelling units
12
Proposed dwelling units
12
General construction