Knowledge Base

Jefferson County’s current building codes and adopted standards are available online for public reference.
Customers can view the applicable building codes and requirements by visiting the Building Safety webpage, which also provides additional information, resources, and guidance related to permits, inspections, and construction standards. The current adopted codes are also listed below for quick reference.

Visit the Building Safety Building Code webpage here: Jefferson County Building Codes

Visit the Building Safety Quick Code Check webpage here: Quick Code Check

2018 International Residential Code

2018 International Building Code

2018 International Energy Conservation Code

2018 International Existing Building Code

2018 International Fuel Gas Code

2018 International Mechanical Code

2018 International Plumbing Code

2023 National Electrical Code (Effective Aug 1, 2023)

Free Access to the Online International Code Books

Important Notice: Check with your local fire district before starting your do-it-yourself, residential or commercial project. The local fire district has individual authority to enforce fire code standards beyond the county's requirements. Coordinating and cooperating with your local fire district early in the process may prevent costly alterations to your do-it-yourself, residential or commercial project and ensure compliance with all applicable health and safety standards.

• 2018 Jefferson County Building Code Supplement July 2021 (PDF)
  
• 2018 Jefferson County Residential Code Supplement July 2021(PDF)
• Appendix Z Material Verification Form (PDF

Jefferson County Building Safety Division