The bill amends the Idaho Building Code Act by adding a new section, 39-4117, which outlines the process for building permit applications and establishes timelines for their review. Local governments that require building permits must provide a detailed document outlining the permit process, which must be accessible on their websites and available in physical form upon request. Applicants are required to submit complete applications and, if deemed incomplete, local governments must notify them within ten business days for residential permits and twenty business days for commercial permits, specifying any missing information.

Additionally, the bill mandates that local governments review submitted applications for completeness within the same timeframes and provide written notice of their determination. A determination of completeness does not equate to approval but allows the application to move forward to formal plan review. The bill also allows for written agreements between applicants and local governments to extend these timelines if necessary. An emergency clause is included, making the act effective on July 1, 2025.