NYC DOB record · M01124871-S2

171 West 133 Street

171 West 133 Street, Manhattan, NY 10030

Alteration filing in Harlem (North), 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. What every status means

ApprovedAlteration filing

NYC Department of Buildings · w9ak-ipjd · accessed Sep 26, 2026 · Verify the source row

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NYC DOB RECORD · M01124871-S2

171 West 133 Street

Manhattan, NY 10030

Alteration filing · status dated Sep 23, 2026

Current record
Approved
Proposed scale
5 stories
Dwelling units
10
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 M01124871-S2 as a alteration filing at 171 West 133 Street, Manhattan, NY 10030. Its latest published status category is Approved, dated Sep 23, 2026. The filing records 5 proposed stories and 10 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 23, 2026
Proposed scale
5 proposed stories and 10 proposed dwelling units
The building, not the filingopen housing violations and every filing at BIN 1058209Applicant of recordSee the 78 filings that name Rosenthal Engineering PLLC
FiledSep 25, 2025
Current recordApproved
Proposed scale5 stories
Recorded cost$54,000

What the filing says

A public-record reading of the proposed work.

Proposed removal of existing gas boilers, gas fired water heater, expansion tank and install new ones as per plan, filed in conjunction with GC # M01124871-I1

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 5-story walk-up apartment building built in 1926, with 10 homes, on a 2,498 sq ft lot.

Built
1926
Last altered
1999
Floors
5
Residential units
10
Building type
Walk-up apartment building
Land use
Mixed residential and commercial
Zoning district
R7-2
Lot area
2,498 sq ft
Building area
8,675 sq ft

Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 29, 2026. They describe the tax lot, not this filing.

Violation record

Are there open violations here?

No open violations are recorded for this building. 9 notices are on file, all with a recorded resolution.

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 26, 2026.

Recorded timeline

Dates published by the Department of Buildings.

  1. Application filed

    DOB received filing M01124871-S2.

    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 73,707 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
M01124871-S2
BBL
1019180005
Review type
Standard Plan Examination
Existing stories
5
Proposed stories
5
Existing dwelling units
10
Proposed dwelling units
10