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NYC DOB record · B01438371-P1

851 Willoughby Avenue

851 Willoughby Avenue, Brooklyn, NY 11221

Alteration filing in Bedford-Stuyvesant (East), Brooklyn. The latest DOB status is approved.

A plan examiner has approved the application. A permit still has to be issued before work can begin. What every status means

ApprovedAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Sep 4, 2026 · Verify the source row

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NYC DOB RECORD · B01438371-P1

851 Willoughby Avenue

Brooklyn, NY 11221

Alteration filing · status dated Sep 1, 2026

Current record
Approved
Proposed scale
3 stories
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 B01438371-P1 as a alteration filing at 851 Willoughby Avenue, Brooklyn, NY 11221. Its latest published status category is Approved, dated Sep 1, 2026. The filing records 3 proposed stories and 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 1, 2026
Proposed scale
3 proposed stories and 2 proposed dwelling units
The building, not the filingEvery filing at BIN 3042991, with the parcel and violation recordApplicant of recordSee the 46 filings that name Ag Engineering PLLC
FiledAug 24, 2026
Current recordApproved
Proposed scale3 stories
Recorded cost$7,500

What the filing says

A public-record reading of the proposed work.

Proposing to repair the rear-yard fire escape to correct the conditions cited in vacate order complaint 3A37714. No change in use, egress, or occupancy is proposed.

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 two-family home built in 1910, on a 1,206 sq ft lot.

Built
1910
Floors
3
Residential units
2
Building type
Two-family home
Land use
One and two family homes
Zoning district
C4-4L
Lot area
1,206 sq ft
Building area
1,917 sq ft

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 16, 2026. They describe the tax lot, not this filing.

Violation record

Are there open violations here?

No open violations are recorded for this building.

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 10, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing B01438371-P1.

    01
  2. Application approved

    The application reached an approved status in the DOB record.

    02
  3. Current status updated

    The latest recorded filing status is “Approved.”

    03

For scale: half of DOB filings are permitted within 20 days of being filed and a quarter take longer than 4 months, measured across 62,630 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
B01438371-P1
BBL
3015900028
Review type
Standard Plan Examination
Existing stories
3
Proposed stories
3
Existing dwelling units
2
Proposed dwelling units
2
General constructionStructural work

Nearby records

Other verified filings in this part of the city.