Building Codes

Building codes are in place to protect public health, safety and general welfare as they relate to the construction and occupancy of buildings and structures. You can find the building codes that Jefferson County has adopted by type and effective dates on our Adopted Building Codes pages.

See our Code Books page to see how books can be purchased at the Jefferson County Building Safety division office. You can also check our Quick Code Check page for codes most frequently needed.

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.

Access Free Codes Online

Proposed 2018 changes to IRC and IBC Supplements, effective date July 1, 2021.

See the document below for proposed revisions. For questions contact 303-271-8260.