Oklahoma Uniform Building Code Commission; dwelling units; guidelines; codification; effective date.

HB 3238 clarifies that buildings with two to four dwelling units must comply with the Internal Residential Code for construction standards, directly affecting builders, developers, and local governments regulating small multifamily housing. The bill requires the Oklahoma Uniform Building Code Commission to create clear guidelines ensuring consistent application of these codes statewide for such structures. It amends existing law to update the Commission's duties, including maintaining a public website listing applicable codes, and takes effect November 1, 2026. This change standardizes building requirements for duplexes and small apartment buildings without altering broader code enforcement procedures.