NYC DOB record · X01417912-I1

3950 Blackstone Avenue

3950 Blackstone Avenue, Bronx, NY 10471

Alteration filing in Riverdale-Spuyten Duyvil, Bronx. 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 Sep 4, 2026 · Verify the source row

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3950 Blackstone Avenue 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 X01417912-I1 as a alteration filing at 3950 Blackstone Avenue, Bronx, NY 10471. Its latest published status category is Approved, dated Sep 1, 2026. The filing records 7 proposed stories and 120 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
7 proposed stories and 120 proposed dwelling units
Applicant of recordSee the 4 filings that name Andrew Katz Engineering
FiledJun 17, 2026
Current recordApproved
Proposed scale7 stories
Recorded cost$20,000

What the filing says

A public-record reading of the proposed work.

Local stucco repair at balcony line in rear yard. Local stucco repair at bulkhead on roof. 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 6-story elevator apartment building built in 1959, with 189 homes, on a 102,825 sq ft lot.

Built
1959
Floors
6
Residential units
189
Building type
Elevator apartment building
Land use
Mixed residential and commercial
Zoning district
R4
Lot area
102,825 sq ft
Building area
237,000 sq ft

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 4, 2026. They describe the tax lot, not this filing.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing X01417912-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
X01417912-I1
BIN
2085805
BBL
2059090163
Review type
Standard Plan Examination
Existing stories
7
Proposed stories
7
Existing dwelling units
120
Proposed dwelling units
120
General construction