NYC DOB record · M01407460-I1

423 West 120 Street

423 West 120 Street, Manhattan, NY 10027

Alteration filing in Morningside Heights, Manhattan. 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 2, 2026 · Verify the source row

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423 West 120 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 M01407460-I1 as a alteration filing at 423 West 120 Street, Manhattan, NY 10027. Its latest published status category is Approved, dated Aug 31, 2026. The filing records 10 proposed stories and 78 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
Aug 31, 2026
Proposed scale
10 proposed stories and 78 proposed dwelling units
Applicant of recordSee the 9 filings that name Thornton Tomasetti
FiledJun 1, 2026
Current recordApproved
Proposed scale10 stories
Recorded cost$227,000

What the filing says

A public-record reading of the proposed work.

Proposed waterproofing replacement at south courtyard, including concrete pavement replacement, localized brick masonry replacement, and stone repairs, and railing replacement. no change to use, occupanyc or egress.

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 10-story elevator apartment building built in 1914, with 78 homes, on a 12,615 sq ft lot.

Built
1914
Last altered
1984
Floors
10
Residential units
78
Building type
Elevator apartment building
Land use
Mixed residential and commercial
Zoning district
R8
Lot area
12,615 sq ft
Building area
90,827 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.

Violation record

Are there open violations here?

The Department of Buildings has 3 open notices on record for this building, out of 39 notices on file; the most recent was issued Sep 18, 2025.

  • Construction

    Issued Sep 18, 2025 — FAILURE TO MAINTAIN BUILDING IN CODE COMPLIANT MANNER. OBSERVED LOOSE METAL FLASHING ON ROOF, MULTIPLE ERRODED MORTAR JOINTS AT EXPOSURE 3 AND EXPOSURE 4, AND CRACK JOINT CORNER OF EXPOSURE 2 AND EXPOSURE 3 1FL. REMEDY: REPAIR AND/OR REPLACE

  • Construction

    Issued Jul 3, 2002

  • Electric

    Issued Jan 17, 1991

A violation is a notice the Department of Buildings recorded against the building. It is not a judgment, and many concern paperwork rather than safety. Open means the agency has not recorded a resolution, which is not the same as the problem still existing. From NYC Department of Buildings, DOB Violations (3h2n-5cm9), accessed Sep 2, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing M01407460-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
M01407460-I1
BIN
1059515
BBL
1019630001
Review type
Standard Plan Examination
Existing stories
10
Proposed stories
10
Existing dwelling units
78
Proposed dwelling units
78
General construction