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Manhattan

100 United Nations Plaza

Manhattan, NY 10017Company-ownedBBL 1013411585BIN 1039205
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16 sources

Year Built1984
Floors49
Building Area357,793 sqft
ZoningC1-9
ClassRG
Market Value$4.1M

100 UNITED NATIONS PLAZA is a property located at 100 UNITED NATIONS PLAZA, Manhattan, NY 10017. The building was constructed in 1984. The building has 49 floors. The building area is 357,793 square feet on a 25,179 sqft lot. The property is zoned C1-9. The assessed market value is $4.1M. It last sold for $1.4M on Sep 2, 2026. Public records list the property as company-owned. There are 480 building permits on record (338 active). There are 122 violations on record (18 currently open). 9 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

3,949records on file

Completed in 1984, 100 United Nations Plaza rises 49 stories over New York. Public records put it at 357,793 square feet of floor area, on land zoned C1-9. It is carried on the public rolls at a market value of $4.1M, and assessed for tax at $1.8M. In the 41 years its record reaches back, the lot has drawn 3,949 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward mortgage: 979 of its 3,949 records, fully 25%, fall under that one heading. Release (917) and sale (877) trail well behind. 18 violations stand open against it today.

The pace is anything but even. Activity is spread across the decades, with 1987 the busiest year on file.

Read together — 25% mortgage, 41 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.

$4.1M of New York, written across 3,949 government filings.

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Executive summary, compliance history, title chain & existing debt, recorded documents & agreements, owner contacts, tax detail, Use & Development, build envelope, market comps, investment metrics, deal math & stress tests, deal signals, pre-foreclosure signals, neighborhood. Downloadable PDF. One payment, no subscription.

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

Address100 UNITED NATIONS PLAZA, Manhattan, NY 10017
RG
Year Built1984
Floors49
Total UnitsN/A
Building Area357,793 sqft
Lot Size25,179 sqft
ZoningC1-9
1013411585
1039205
OwnershipCompany-owned

Assessment & Sales

$4.1M
$1.8M
$810K
$1.4M
Last Sale DateSep 2, 2026

Building Permits

480 on record · 338 active
Public SafetyDOB NOW
AHV PERMIT ISSUED
Filed Oct 24, 2026Job #M3045048
View this permit's full record & inspection history →
Public SafetyDOB NOW
AHV PERMIT ISSUED
Filed Oct 17, 2026Job #M9229443
View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Sep 28, 2026Job #M01061539-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
APPROVED
Filed Sep 28, 2026Job #M01061539-A3
View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Sep 24, 2026Est. cost $1KJob #M01420204-I1
View this permit's full record & inspection history →

+ 475 more permits — view full report

Violations

122 on record · 18 open
Judgments · 9 docketed
OATH summonsJUDGMENT DOCKETED
Docketed Sep 30, 2025Ticket #0219801378
FAILURE TO COMPLY WITH THE TERMS AND CONDITIONS OF DOT PERMITS
OATH summonsJUDGMENT DOCKETED
Docketed Sep 30, 2025Ticket #0219801387
OBSTRUCTION OF STREET W CONSTRUCTION MATERIALS EQUIPMENT W O PERMIT
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Jul 31, 2023Ticket #035657789K
MISC. VIOLATION OF COND ON AS OF RIGHT PRIVATELY OWNED PUBLIC SPACE
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jul 31, 2022Ticket #012112941L
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jun 30, 2020Ticket #012096526R
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS

+ 4 more docketed judgments — view full report

SafetyParking Structures
ACTIVE
Issued Dec 31, 2024#VIO-FTC-PS-UNSAFE-202312-0010980

Unsafe report of parking structures filed.

View this violation's full details & status history →
HPDClass B
NOV SENT OUT
Issued Nov 30, 2023#16485562

§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE 2nd BATHROOM FROM EAST LOCATED AT APT 3G, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →
HPDClass B
DEFECT LETTER ISSUED
Issued Nov 30, 2023#16485561

§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... AT CEILING APPROXIMATELY 11 SQ. FT. IN THE 2nd BATHROOM FROM EAST LOCATED AT APT 3G, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH

View this violation's full details & status history →
HPDClass B
DEFECT LETTER ISSUED
Issued Nov 30, 2023#16789647

§ 27-2017.3 HMC: TRACE AND REPAIR THE SOURCE AND ABATE THE VISIBLE MOLD CONDITION... A APPROXIMATELY 7 SQ. FT AT CEILING IN THE 1st BATHROOM FROM EAST LOCATED AT APT 3G, 3rd STORY, 1st APARTMENT FROM EAST AT SOUTH ORIGINAL VIOLATION 16485560 ISSUED 30-NOV-23 HAS BEEN UPGRADED TO CLASS B PER ADMINISTRATIVE CODE §27-2017.3a(3)(a) or (b).

View this violation's full details & status history →
DOB LegacyAEUHAZ1
ACTIVE
Issued Oct 4, 2023#2739423

FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION

View this violation's full details & status history →

+ 117 more violations on record — view full report

Get the Complete Report for 100 UNITED NATIONS PLAZA

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

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Frequently Asked Questions

When was 100 UNITED NATIONS PLAZA, Manhattan built?

The building at 100 UNITED NATIONS PLAZA, Manhattan, NY 10017 was constructed in 1984. with 49 floors. The building area is 357,793 sqft.

Are there building permits at 100 UNITED NATIONS PLAZA, Manhattan?

Yes. 100 UNITED NATIONS PLAZA, Manhattan, NY 10017 has 480 building permits on record, with 338 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Public Safety (AHV PERMIT ISSUED) filed Oct 24, 2026.

Does 100 UNITED NATIONS PLAZA, Manhattan have violations?

Yes. 100 UNITED NATIONS PLAZA, Manhattan, NY 10017 has 122 violations on record, with 18 currently open. Breakdown: 10 DOB Safety, 88 DOB, 20 ECB, 4 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 100 UNITED NATIONS PLAZA, Manhattan have docketed judgments?

Yes. 100 UNITED NATIONS PLAZA, Manhattan, NY 10017 has 9 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 100 UNITED NATIONS PLAZA?

100 UNITED NATIONS PLAZA, Manhattan, NY 10017 has an assessed market value of $4.1M and a total assessed value of $1.8M (land: $810K). Assessment data is from the NYC Department of Finance (DOF).

When was 100 UNITED NATIONS PLAZA last sold?

100 UNITED NATIONS PLAZA, Manhattan, NY 10017 last sold for $1.4M on Sep 2, 2026. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 100 UNITED NATIONS PLAZA?

100 UNITED NATIONS PLAZA, Manhattan, NY 10017 is zoned C1-9. 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 100 UNITED NATIONS PLAZA?

100 UNITED NATIONS PLAZA, Manhattan, NY 10017 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 100 UNITED NATIONS PLAZA?

Search 100 UNITED NATIONS PLAZA 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 ($15, one-time) adds the complete title history, owner contacts, and a downloadable PDF.

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100 UNITED NATIONS PLAZA, Manhattan, NY 10017 — Property Records, Permits, Violations, Tax & Zoning | RegWatch