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Manhattan • Office

100 William St

Manhattan, NY 10038Company-ownedBBL 1000680036BIN 1001116
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Updated Aug 1, 2026 · 16 sources

Year Built1973
Floors22
Units76
Building Area377,120 sqft
ZoningC5-5
ClassO4
Market Value$102.9M

100 WILLIAM ST is a property located at 100 WILLIAM ST, Manhattan, NY 10038. It is classified as a office - semi-fireproof (small). The building was constructed in 1973. It has 22 floors and 76 units. The building area is 377,120 square feet on a 18,513 sqft lot. The property is zoned C5-5. The assessed market value is $102.9M. It last sold for $70M on Dec 12, 2025. Public records list the property as company-owned. There are 1025 building permits on record (687 active). There are 183 violations on record (0 currently open). 20 docketed judgments carrying $250 in open balances 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

1,784records on file
57Energy Star

Completed in 1973, 100 William St rises 22 stories over New York. Public records put it at 76 units and 377,120 square feet of floor area, on land zoned C5-5. It is carried on the public rolls at a market value of $103M, and assessed for tax at $46.3M. In the 1821 years its record reaches back, the lot has drawn 1,784 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward permit: 1,025 of its 1,784 records, fully 57%, fall under that one heading. Inspection (222) and violation (183) trail well behind. No 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 2012.

On the environmental ledger, the building posts an Energy Star score of 57, with a site energy-use intensity of 77.4 kBtu per square foot. Its operations answer for roughly 2,537 metric tons of CO2-equivalent a year.

Read together — 57% permit, 1821 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.

$103M of New York, written across 1,784 government filings.

Open the live report — daily-updated data, AI chat & alerts
Sources
NYC DOBNYC HPDNYC DOFACRISNYC DCPECB/OATHNYC DEPNYC LPCNYC FDNYNYS DHCRMOCEJFEMAEPAUS CensusHUDUSGS
updated

Property Details

Address100 WILLIAM ST, Manhattan, NY 10038
Building TypeOffice - Semi-Fireproof (small)
O4
Year Built1973
Floors22
Total Units76
Building Area377,120 sqft
Lot Size18,513 sqft
ZoningC5-5
1000680036
1001116
OwnershipCompany-owned

Assessment & Sales

$102.9M
$46.3M
$10.8M
$70M
Last Sale DateDec 12, 2025

Building Permits

1025 on record · 687 active
SprinklerDOB NOW
PERMIT ISSUED
Filed Jul 24, 2026Est. cost $190KJob #M01409993-I1

Initial Permit

View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Jul 24, 2026Est. cost $190KJob #M01409993-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
OBJECTIONS
Filed Jul 21, 2026Est. cost $1.4MJob #M01363617-S5
View this permit's full record & inspection history →
ElectricalDOB NOW
PERMIT ISSUED
Filed Jul 21, 2026Job #M01433522-I1-EL

Temporary Light & Power

View this permit's full record & inspection history →
General ConstructionDOB NOW
PLAN EXAMINER REVIEW
Filed Jul 13, 2026Est. cost $859KJob #M01332779-S2
View this permit's full record & inspection history →

+ 1020 more permits — view full report

Violations

183 on record · none currently open
Open judgment balance — docketed OATH judgments$250
Judgments · 20 docketed
DEP summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2026Ticket #000927992N
IDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 3RD AND SUB
Health summons (OATH)JUDGMENT DOCKETED
Docketed Aug 18, 2025Balance $250Ticket #0890836073
REFILLABLE, REUSABLE BEVERAGE CONTAINER FILLED WITH TCS FOODS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2021Ticket #012099624Y
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Dec 31, 2019Ticket #035421486M
FAILURE TO SAFEGUARD ALL PERSONS AND PROP AFFECTED BY CONST OPERATIONS
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed Aug 31, 2019Ticket #040418469Y
FAILURE TO POST PRIVATE CARTER STICKER ORGANICS 1ST

+ 15 more docketed judgments — view full report

ECBZoning
RESOLVE
Issued Mar 17, 2022#35644309J

VIOLATION OF DISCRETIONARY ZONING CONDITION ON PRIVATELY OWNED PUBLIC SPACE.AS PER POPS NUMBER M010007 WHICH INDICATES SEATING AS A REQUIREDAMENITY AND SITE PLAN BY ROGERS MARVEL ARCHITECTS DWG Z-200 ATTACHMENT

View this violation's full details & status history →
ECBConstruction
RESOLVE
Issued Nov 1, 2021#37022608X

27-929.1;AC#27-929.1,FAILURE TO COMPLETE THE INSTALLATION OF A FULL SYSTEM OF AUTOMATIC SPRINKERS & FILE A FINAL SPRINKLER REPORT PREPARED BY A REGISTERED DESIGN PROFESSIONAL IN AN OFFICE BLDG 100 FT OR MORE I

View this violation's full details & status history →
DOB LegacyE
RESOLVED
Issued Feb 12, 2021#2507075
View this violation's full details & status history →
DOB LegacyE
RESOLVED
Issued Feb 12, 2021#2507080
View this violation's full details & status history →
DOB LegacyE
RESOLVED
Issued Feb 12, 2021#2507081
View this violation's full details & status history →

+ 178 more violations on record — view full report

Get the Complete Report for 100 WILLIAM ST

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 WILLIAM ST, Manhattan built?

The building at 100 WILLIAM ST, Manhattan, NY 10038 was constructed in 1973. It is classified as a office - semi-fireproof (small) with 22 floors and 76 units. The building area is 377,120 sqft.

Are there building permits at 100 WILLIAM ST, Manhattan?

Yes. 100 WILLIAM ST, Manhattan, NY 10038 has 1025 building permits on record, with 687 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Sprinkler (PERMIT ISSUED) filed Jul 24, 2026.

Does 100 WILLIAM ST, Manhattan have violations?

Yes. 100 WILLIAM ST, Manhattan, NY 10038 has 183 violations on record, with 0 currently open. Breakdown: 135 DOB, 48 ECB. Sources: NYC DOB, HPD, and ECB/OATH.

Does 100 WILLIAM ST, Manhattan have docketed judgments?

Yes. 100 WILLIAM ST, Manhattan, NY 10038 has 20 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $250. 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 WILLIAM ST?

100 WILLIAM ST, Manhattan, NY 10038 has an assessed market value of $102.9M and a total assessed value of $46.3M (land: $10.8M). Assessment data is from the NYC Department of Finance (DOF).

When was 100 WILLIAM ST last sold?

100 WILLIAM ST, Manhattan, NY 10038 last sold for $70M on Dec 12, 2025. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 100 WILLIAM ST?

100 WILLIAM ST, Manhattan, NY 10038 is zoned C5-5. 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 WILLIAM ST?

100 WILLIAM ST, Manhattan, NY 10038 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 WILLIAM ST?

Search 100 WILLIAM ST 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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100 WILLIAM ST, Manhattan, NY 10038 — Property Records, Permits, Violations, Tax & Zoning | RegWatch