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Manhattan • Museum

945 Madison Ave

Manhattan, NY 10021Company-ownedBBL 1013890050BIN 1041666
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Updated Aug 1, 2026 · 16 sources

Year Built1966
Floors5
Units3
Building Area50,560 sqft
ZoningC5-1
ClassP7
Market Value$51.4M

945 MADISON AVE is a property located at 945 MADISON AVE, Manhattan, NY 10021. It is classified as a museum / art gallery. The building was constructed in 1966. It has 5 floors and 3 units. The building area is 50,560 square feet on a 12,920 sqft lot. The property is zoned C5-1. The assessed market value is $51.4M. It last sold for $100M on Nov 1, 2024. Public records list the property as company-owned. There are 313 building permits on record (216 active). There are 70 violations on record (3 currently open). 2 docketed judgments are on record with OATH. Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

568records on file

Completed in 1966, 945 Madison Ave rises 5 stories over New York. Public records put it at 3 units and 50,560 square feet of floor area, on land zoned C5-1. It is carried on the public rolls at a market value of $51.4M, and assessed for tax at $23.1M. In the 37 years its record reaches back, the lot has drawn 568 separate government filings.

The documentary life of the address leans hard toward permit: 313 of its 568 records, fully 55%, fall under that one heading. Violation (70) and complaint (68) trail well behind. 3 violations stand open against it today.

The pace is anything but even. The early decades pass in near silence; the filings cluster heavily in recent years, peaking in 2025.

On the environmental ledger, the building is benchmarked under Local Law 84, with a site energy-use intensity of 346.3 kBtu per square foot. Its operations answer for roughly 1,456 metric tons of CO2-equivalent a year.

Read together — 55% permit, 37 years of accumulation, a parcel of New York — these scattered records compose a portrait of the address that no single page sets out to draw.

$51.4M of New York, written across 568 government filings.

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Sources
NYC DOBNYC HPDNYC DOFACRISNYC DCPECB/OATHNYC DEPNYC LPCNYC FDNYNYS DHCRMOCEJFEMAEPAUS CensusHUDUSGS
updated

Property Details

Address945 MADISON AVE, Manhattan, NY 10021
Building TypeMuseum / Art Gallery
P7
Year Built1966
Floors5
Total Units3
Building Area50,560 sqft
Lot Size12,920 sqft
ZoningC5-1
ConditionN/A
1013890050
1041666
OwnershipCompany-owned

Assessment & Sales

$51.4M
$23.1M
$10.4M
$100M
Last Sale DateNov 1, 2024

Building Permits

313 on record · 216 active
General ConstructionDOB NOW
LOC ISSUED
Filed Apr 13, 2026Est. cost $87KJob #M01158654-Z7
View this permit's full record & inspection history →
General ConstructionDOB NOW
TA CERTIFICATE OF OPERATION ISSUED
Filed Apr 9, 2026Job #M01380698-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
LOC ISSUED
Filed Apr 2, 2026Est. cost $207KJob #M01158654-S2
View this permit's full record & inspection history →
General ConstructionDOB NOW
PA CERTIFICATE OF OPERATION ISSUED
Filed Mar 24, 2026Job #M01343724-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
LOC ISSUED
Filed Mar 17, 2026Est. cost $873KJob #M01158654-Z5
View this permit's full record & inspection history →

+ 308 more permits — view full report

Violations

70 on record · 3 open
Judgments · 2 docketed
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Apr 30, 2020Ticket #011726503L
INSPECTION AND TESTING
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Feb 29, 2016Ticket #011442905J
POSTING OF PERMITS AND RECORD KEEPING
ECBConstruction
ACTIVE
Issued May 5, 2026#39187280J

WORK WITHOUT A PERMIT: ATOI I OBSERVED AT EXPOSURE#2 AT THE ON THE RIGHT AND LEFT SIDE TWO UNPERMITTED/UNDOCUMENTED METAL STORAGE CONTAINER, APPROX. SIZE 7FT IN WIDTH BY 12FT IN HEIGHT BY 16FT IN LENGTH, THE SE

View this violation's full details & status history →
ECBElevator
ACTIVE
Issued Jul 30, 2025#39155432N

VF, WITH OUT CONSTRUCTION PERMIT THEY ARE USED THE DEVICE FOR CONSTRUCTION. SO . THE DEVICE IS CEASE USED .. FIELD APPLICATION FOR INSPECTION ON D OB .

View this violation's full details & status history →

+ 68 more violations on record — view full report

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Title history, detailed tax records, environmental data, zoning analysis, and more from 250+ government sources.

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Frequently Asked Questions

When was 945 MADISON AVE, Manhattan built?

The building at 945 MADISON AVE, Manhattan, NY 10021 was constructed in 1966. It is classified as a museum / art gallery with 5 floors and 3 units. The building area is 50,560 sqft.

Are there building permits at 945 MADISON AVE, Manhattan?

Yes. 945 MADISON AVE, Manhattan, NY 10021 has 313 building permits on record, with 216 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a General Construction (LOC ISSUED) filed Apr 13, 2026.

Does 945 MADISON AVE, Manhattan have violations?

Yes. 945 MADISON AVE, Manhattan, NY 10021 has 70 violations on record, with 3 currently open. Breakdown: 66 DOB, 4 ECB. Sources: NYC DOB, HPD, and ECB/OATH.

Does 945 MADISON AVE, Manhattan have docketed judgments?

Yes. 945 MADISON AVE, Manhattan, NY 10021 has 2 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH). A docketed judgment is an enforceable money judgment entered by OATH after a hearing on a summons issued at this property; where the respondent is the property owner it can attach to the property as a lien.

What is the property tax assessment for 945 MADISON AVE?

945 MADISON AVE, Manhattan, NY 10021 has an assessed market value of $51.4M and a total assessed value of $23.1M (land: $10.4M). Assessment data is from the NYC Department of Finance (DOF).

When was 945 MADISON AVE last sold?

945 MADISON AVE, Manhattan, NY 10021 last sold for $100M on Nov 1, 2024. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 945 MADISON AVE?

945 MADISON AVE, Manhattan, NY 10021 is zoned C5-1. Zoning data is from the NYC Department of City Planning (DCP). For detailed FAR, overlays, and development rights, view the full property report on RegWatch.

Who owns 945 MADISON AVE?

945 MADISON AVE, Manhattan, NY 10021 is company-owned according to public records. Ownership data is from NYC Department of Finance assessment rolls. View the current owner of record and registered contacts in the full property report on RegWatch.

How do I get a full property report for 945 MADISON AVE?

Search 945 MADISON AVE on RegWatch to see its public record free — violations, permits, tax records, zoning, environmental data, and more from 250+ government sources, no credit card required. A Full Analysis report adds the complete title history, owner contacts, and a downloadable PDF.

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945 MADISON AVE, Manhattan, NY 10021 — Property Records, Permits, Violations, Tax & Zoning | RegWatch