NYC DOB record · M01412721-I1

51 Madison Avenue

51 Madison Avenue, Manhattan, NY 10010

Alteration filing in Midtown South-Flatiron-Union Square, Manhattan. 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 18, 2026 · Verify the source row

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NYC DOB RECORD · M01412721-I1

51 Madison Avenue

Manhattan, NY 10010

Alteration filing · status dated Sep 15, 2026

Current record
Approved
Proposed scale
34 stories
Dwelling units
Not stated
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 M01412721-I1 as a alteration filing at 51 Madison Avenue, Manhattan, NY 10010. Its latest published status category is Approved, dated Sep 15, 2026. The filing records 34 proposed stories.

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 15, 2026
Proposed scale
34 proposed stories
The building, not the filingopen housing violations, what it sold for, apartment sizes and every filing at BIN 1016880Applicant of recordSee the 3 filings that name Hlw International
FiledSep 14, 2026
Current recordApproved
Proposed scale34 stories
Recorded cost$1.7M

What the filing says

A public-record reading of the proposed work.

Removal and installation of interior non bearing partitions. Scope of Work includes Partial Demolition, New MEP and Structure. No change in use, egress or occupancy under this application.

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 34-story office building built in 1928, on a 83,937 sq ft lot.

Built
1928
Last altered
2011
Floors
34
Residential units
0
Building type
Office building
Land use
Commercial and office
Zoning district
C5-3
Lot area
83,937 sq ft
Building area
1,159,795 sq ft

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 22, 2026. They describe the tax lot, not this filing.

Violation record

Are there open violations here?

The Department of Buildings has 16 open notices on record for this building, out of 375 notices on file; the most recent was issued Aug 5, 2014.

  • Elevator

    Issued Aug 5, 2014

  • Elevator

    Issued Aug 5, 2014

  • Elevator

    Issued Aug 5, 2014

  • 13 further open notices are on file. Open the source dataset for the full list.

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 22, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing M01412721-I1.

    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 66,798 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
M01412721-I1
BBL
1008560024
Review type
Professional Certification
Existing stories
34
Proposed stories
34
Existing dwelling units
0
Proposed dwelling units
0
General construction