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Manhattan • Office

423 West 55 St

Manhattan, NY 10019Individually ownedBBL 1010650012BIN 1026842
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Updated Aug 1, 2026 · 16 sources

Year Built1915
Floors12
Units24
Building Area263,438 sqft
ZoningC6-2
ClassO6
Market Value$56.8M

423 WEST 55 ST is a property located at 423 WEST 55 ST, Manhattan, NY 10019. It is classified as a office - loft/mixed use. The building was constructed in 1915. It has 12 floors and 24 units. The building area is 263,438 square feet on a 24,603 sqft lot. The property is zoned C6-2. The assessed market value is $56.8M. Public records list the property as individually owned. There are 471 building permits on record (332 active). There are 117 violations on record (1 currently open). 10 docketed judgments carrying $935 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

873records on file
82Energy Star

Completed in 1915, 423 West 55 St rises 12 stories over New York. Public records put it at 24 units and 263,438 square feet of floor area, on land zoned C6-2. It is carried on the public rolls at a market value of $56.8M, and assessed for tax at $25.6M. In the 64 years its record reaches back, the lot has drawn 873 separate government filings — a paper trail nearly as tall as the building itself.

The documentary life of the address leans hard toward permit: 471 of its 873 records, fully 54%, fall under that one heading. Inspection (157) and violation (117) trail well behind. 1 violation stands 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 2006.

On the environmental ledger, the building posts an Energy Star score of 82, with a site energy-use intensity of 48.1 kBtu per square foot. Its operations answer for roughly 1,312 metric tons of CO2-equivalent a year.

Read together — 54% permit, 64 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.

$56.8M of New York, written across 873 government filings.

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

Property Details

Address423 WEST 55 ST, Manhattan, NY 10019
Building TypeOffice - Loft/Mixed Use
O6
Year Built1915
Floors12
Total Units24
Building Area263,438 sqft
Lot Size24,603 sqft
ZoningC6-2
1010650012
1026842
OwnershipIndividually owned

Assessment & Sales

$56.8M
$25.6M
$4M

Building Permits

471 on record · 332 active
ElevatorDOB NOW
OBJECTIONS
Filed Jun 25, 2026Job #M01415472-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ISSUED
Filed Jan 7, 2026Est. cost $60KJob #M01278334-I1

Initial Permit

View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Jan 7, 2026Est. cost $60KJob #M01278334-I1
View this permit's full record & inspection history →
Cats Certificate To OperateOther
CURRENT
Filed Jun 17, 2025Job #457056
View this permit's full record & inspection history →
ElectricalDOB NOW
PERMIT ISSUED
Filed Feb 13, 2024Job #M01004720-I1-EL

Installation of 13 UV LIT Visium 1.

View this permit's full record & inspection history →

+ 466 more permits — view full report

Violations

117 on record · 1 open
Open judgment balance — docketed OATH judgments$935
Judgments · 10 docketed
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jan 31, 2019Balance $935Ticket #012076950H
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Nov 30, 2018Ticket #011638967J
INSPECTION AND TESTING
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Jun 30, 2018Ticket #035264358L
FAIL TO TAKE REQUIRED MEASURES TO SECURE PUBLIC SAFWTY-UNSAFE FACADE
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Aug 31, 2017Ticket #011585223K
PERMITS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Aug 31, 2017Ticket #011585222Z
PERMITS

+ 5 more docketed judgments — view full report

DOB LegacyLBLVIO
ACTIVE
Issued Nov 14, 2025#2798641

VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION

View this violation's full details & status history →

+ 116 more violations on record — view full report

Get the Complete Report for 423 WEST 55 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 423 WEST 55 ST, Manhattan built?

The building at 423 WEST 55 ST, Manhattan, NY 10019 was constructed in 1915. It is classified as a office - loft/mixed use with 12 floors and 24 units. The building area is 263,438 sqft.

Are there building permits at 423 WEST 55 ST, Manhattan?

Yes. 423 WEST 55 ST, Manhattan, NY 10019 has 471 building permits on record, with 332 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Elevator (OBJECTIONS) filed Jun 25, 2026.

Does 423 WEST 55 ST, Manhattan have violations?

Yes. 423 WEST 55 ST, Manhattan, NY 10019 has 117 violations on record, with 1 currently open. Breakdown: 93 DOB, 24 ECB. Sources: NYC DOB, HPD, and ECB/OATH.

Does 423 WEST 55 ST, Manhattan have docketed judgments?

Yes. 423 WEST 55 ST, Manhattan, NY 10019 has 10 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $935. 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 423 WEST 55 ST?

423 WEST 55 ST, Manhattan, NY 10019 has an assessed market value of $56.8M and a total assessed value of $25.6M (land: $4M). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 423 WEST 55 ST?

423 WEST 55 ST, Manhattan, NY 10019 is zoned C6-2. 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 423 WEST 55 ST?

423 WEST 55 ST, Manhattan, NY 10019 is individually 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 423 WEST 55 ST?

Search 423 WEST 55 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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423 WEST 55 ST, Manhattan, NY 10019 — Property Records, Permits, Violations, Tax & Zoning | RegWatch