Alteration filingSep 24
DOB filing M00400576-P1
Alteration filing at 439 West 21 Street
Under review$14,000 recorded cost
Open filing Building record · BIN 1012625
439 West 21 Street
439 West 21 Street, Manhattan, NY 10011
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 2 independently sourced records, including 2 that are not recorded as completed, closed or withdrawn.
newyorkdailyStreet Futures
BUILDING RECORD · BIN 1012625
439 West 21 Street
Chelsea-Hudson Yards, Manhattan
A consolidated public-record view · updated Sep 24, 2026
- DOB filings
- 2
- Active-status
- 2
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings2
Open or active-status records2
First included filingOct 20, 2020
Latest recorded changeSep 24, 2026
The lot
What is already here?
The lot holds a 4-story walk-up apartment building built in 1853, with 8 homes, on a 1,577 sq ft lot.
- Floors 2–4Homes8 homes are recorded on this lot — about 3 homes to a floor. The city does not publish which floor any of them is on.
- Floor 1Street levelStreet level. The lot is recorded as walk-up apartments.
- Street levelWalk-up apartments
- Homes8 recorded on the lot
- Above the southern skylineFrom about floor 16 — the tallest thing within 60 m to the south is 46.1 m
- Built
- 1853
- Last altered
- 2009
- Floors
- 4
- Residential units
- 8
- Building type
- Walk-up apartment building
- Land use
- Walk-up apartments
- Zoning district
- R7B
- Lot area
- 1,577 sq ft
- Building area
- 3,600 sq ft
- Historic district
- Chelsea Historic District
Housing violations
1 violation is open against this address under the Housing Maintenance Code.
- 0Immediately hazardous
- 0Hazardous
- 1Non-hazardous
- 0Information order
Open means the Department of Housing Preservation and Development has not recorded it as corrected, which is not the same as nobody having fixed it. The city publishes the apartment each was written against; that is not carried here, because a count says a building has a problem and an apartment number says whose.
What it sold for
2 apartments on this tax block changed hands in the year the city last published, at a median of $1,520,000.
Recorded sale prices from the Department of Finance’s rolling file, covering the year to Aug 31, 2026. Transfers under $10,000 are left out: New York records deed transfers between relatives at a dollar, and those are not sales. No apartment number and no name is carried from either side.
Owner of record
CHELSEA SQUARE NORTH INC
As the assessment roll records it. Only owners that read as a company are shown here; where the roll names an individual, nothing is published.
Lot facts come from NYC Department of City Planning, Primary Land Use Tax Lot Output (PLUTO) (64uk-42ks), accessed Sep 26, 2026. They describe the tax lot, not any single filing. When the rest of New York went up
Violation record
Are there open violations here?
The Department of Buildings has 1 open notice on record for this building, out of 14 notices on file; the most recent was issued Oct 26, 2009.
- Boiler
Issued Oct 26, 2009
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.
What is recorded here
Multiple filings, one stable building identifier.
New York City's Building Identification Number helps connect filings that may use different application numbers or describe different scopes of work. The records below are grouped because they publish BIN 1012625. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 2 alteration filing. Its latest status categories are 1 under review, 1 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Oct 20, 2020
- Latest recorded change
- Sep 24, 2026
- Highest proposed story count
- Not stated
- Highest proposed unit count
- 6 dwelling units
Highest recorded values may come from different filings and must not be combined into one proposed project. Open the individual filings below for their exact scope. Values outside the publication's conservative data-quality bounds are withheld pending source review.
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Recorded history
What has happened at this address?
Every dated event the city has published for this building, from all 2 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Removal & Replacement of Plumbing Fixtures to Units #1A & #1B. As per plans filed herewith. No change to use, occupancy or egress. Filing M00400576-I1.
- Alteration approved02
Filing M00400576-I1 reached an approved status.
- Permit recorded for alteration03
DOB lists a first permit date for M00400576-I1. That is not by itself confirmation of activity on site.
- Alteration now approved04
The latest status recorded for M00400576-I1 is “Permit Entire.”
- Alteration filed05
Removal & Replacement of Plumbing Fixtures to Units #1A & #1B. As per plans filed herewith. No change to use, occupancy or egress. Filing M00400576-P1.
- Alteration now under review06
The latest status recorded for M00400576-P1 is “Pending Plan Examiner Assignment.”