Building Codes

The City of Mt. Vernon has adopted and enforces the following codes:

• International Building Code (IBC) 2021 Edition
• International Existing Building code (IEBC) 2021 Edition
• International Mechanical Code (IMC) 2021 Edition
• International Fuel Gas Code (IFGC) 2021 Edition
• International Fire Code (IFC) 2021 Edition
• National Electric Code (NEC) 2023
• NFPA 101 Life Safety Code 2021 Edition
• Illinois Energy Conservation Code
• Illinois Plumbing Code
• Illinois Accessibility Code & Americans with Disabilities Act (ADA)

The applicable codes from the list above must be referenced on all construction documents submitted for building permit approval.

Exception: one and two family residential dwellings.

Requirements for Seismic Design Category D must be followed.

In addition, please refer to local ordinances for compliance:

• Chapter 150, Buildings
• Chapter 153, Electrical Code
• Chapter 91, Fire Prevention and Safety
• Chapter 154, Plumbing Code
• Title 5, Public Works

These Articles are not required to be specified on construction documents.

For any question on Building Codes, please contact the Engineering and Inspections Office.