DOB Violation Classes Explained: Class 1, 2, and 3

The NYC Department of Buildings (DOB) classifies violations by severity into three tiers: Class 1 (Immediately Hazardous), Class 2 (Major), and Class 3 (Lesser). Higher class violations typically carry steeper financial penalties and stricter correction deadlines.

When an inspector issues an OATH/ECB summons on behalf of the DOB, the assigned class determines how fast you must respond and the total fines you may face. Understanding these classes is the first step in properly defending against or resolving a violation.

Why it matters for NYC property owners

The class of your violation dictates your next steps. A Class 1 violation might come with an active Stop Work Order (SWO) that halts all construction, while a Class 3 violation might offer a "cure" period allowing you to fix the issue before paying any penalty. Ignoring a high-severity violation can result in "Failure to Correct" penalties, which compound rapidly.

Class 1: Immediately Hazardous

Class 1 violations pose an immediate threat to life, health, safety, or property. They require immediate correction. Examples include working without a permit on major structural components, illegal residential conversions, or failure to maintain a building facade. These violations often trigger Stop Work Orders and carry the highest base penalties.

Class 2: Major Violations

Class 2 violations are serious infractions of the NYC Building Code or Zoning Resolution but are not considered immediately hazardous. Examples include performing plumbing or electrical work without a permit, or failing to conduct required elevator inspections. While slightly less severe than Class 1, they still carry significant financial penalties and require a formal Certificate of Correction.

Class 3: Lesser Violations

Class 3 violations are minor infractions. Examples include expired permits on completed minor work or failure to post required signage. Many Class 3 violations come with a "cure" date—if you correct the condition and file an acceptable Certificate of Correction before the cure date, the financial penalty may be completely waived.

What owners or managers should check

• Read the OATH summons carefully to identify the "Infraction Code" and the associated Class.
• Check if there is a "Cure Date" listed on the ticket.
• Determine if a Stop Work Order was issued alongside the violation.

How D.O.B. Guard can help

D.O.B. Guard alerts include the specific violation class so you know exactly how urgent the issue is. We track your open OATH summonses and hearing dates, ensuring you never miss a deadline or incur a Default Penalty.

Related Resources

• What Happens If You Work Without a Permit in NYC?
• What Is a DOB Stop Work Order?

Disclaimer: This is general information only. For a property-specific determination on resolving a specific violation class, confirm with the relevant NYC agency (e.g., DOB) or speak with a licensed professional such as an architect, engineer, expeditor, attorney, or contractor as applicable. D.O.B. Guard does not provide legal, engineering, or architectural advice.

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