Alteration filingSep 17
DOB filing M01386621-S2
Alteration filing at 821 Madison Avenue
Approved5 proposed stories
Open filing Building record · BIN 1041278
821 Madison Avenue
821 Madison Avenue, Manhattan, NY 10065
A consolidated, filing-by-filing view of DOB records matched to this building identifier. The current snapshot links 3 independently sourced records, including 3 that are not recorded as completed, closed or withdrawn.
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BUILDING RECORD · BIN 1041278
821 Madison Avenue
Upper East Side-Carnegie Hill, Manhattan
A consolidated public-record view · updated Sep 17, 2026
- DOB filings
- 3
- Active-status
- 3
- Recorded addresses
- 1
A building-level summary of matched filings, active-status records and published identifiers.
Matched filings3
Open or active-status records3
First included filingApr 13, 2026
Latest recorded changeSep 17, 2026
The lot
What is already here?
The lot holds a 5-story store building built in 1881, on a 1,722 sq ft lot.
- Floors 2–5Nothing on record
- Floor 1Street levelStreet level. The lot is recorded as mixed residential and commercial, so this floor is where the commercial space is.
- Street levelMixed residential and commercial
- Above the southern skylineFrom about floor 19 — the tallest thing within 60 m to the south is 56.7 m
- Built
- 1881
- Floors
- 5
- Residential units
- 0
- Building type
- Store building
- Land use
- Mixed residential and commercial
- Zoning district
- C5-1
- Lot area
- 1,722 sq ft
- Building area
- 6,898 sq ft
- Historic district
- Upper East Side Historic District
The apartments
29 condominium apartments are assessed on this block, and the typical one is 2,453 sq ft (228 m²). They run from 27 to 933 m².
The city values the typical one at $924,859. That is the Department of Finance’s market valuation for tax, not an asking price and not a sale.
What it sold for
4 apartments on this tax block changed hands in the year the city last published, at a median of $3,300,000, from 2,000,000 to 3,550,000.
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
L & M 825 LLC C.O FRI
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 20, 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 33 notices on file; the most recent was issued Nov 14, 2025.
- Low pressure boiler
Issued Nov 14, 2025 — VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION
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 19, 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 1041278. They should not be read as a single construction project unless the underlying filings say so.
The matched set includes 3 alteration filing. Its latest status categories are 3 approved. Each filing page preserves its own status, dates, scope and source identifier.
- First included filing
- Apr 13, 2026
- Latest recorded change
- Sep 17, 2026
- Highest proposed story count
- 5 stories
- Highest proposed unit count
- Not stated
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 3 matched filings, in the order it was recorded. A date marks what entered the public record, not what happened on site.
- Alteration filed01
Interior demolition of cellar through 5th floors. No structural demolition. Filing M01378240-S3.
- Alteration approved02
Filing M01378240-S3 reached an approved status.
- Permit recorded for alteration03
DOB lists a first permit date for M01378240-S3. That is not by itself confirmation of activity on site.
- Alteration filed04
Installation of new plumbing fixtures, sump pump and elevator pit sump pump as indcated on the plans. existingservices to remain. existing gas fired water heater to remain. Filing M01386621-S2.
- Alteration approved05
Filing M01386621-S2 reached an approved status.
- Alteration filed06
Interior demolition of cellar through 5th floors. No structural demolition. Filing M01378240-P1.
- Alteration approved07
Filing M01378240-P1 reached an approved status.
- Alteration now approved08
The latest status recorded for M01378240-P1 is “Approved.”
- Alteration now approved09
The latest status recorded for M01378240-S3 is “Permit Entire.”
- Permit recorded for alteration010
DOB lists a first permit date for M01386621-S2. That is not by itself confirmation of activity on site.
- Alteration now approved011
The latest status recorded for M01386621-S2 is “Permit Entire.”