Casper, WY Building Safety: Building Inspections (2026)

Casper's amended International Building Code Section 111.1, codified at Section 15.04.090, states that no building or structure shall be used or occupied, and no change in the existing occupancy classification of a building or structure or portion thereof shall be made, until the building official has issued a Certificate of Occupancy, and adds a local condition that all off-site improvements required by the subdivision code must also be complete. Chapter 15.08's occupancy-permit process fills in the mechanics: Section 15.08.040(A) says no one may occupy a building requiring a permit before obtaining an occupancy permit, which issues only after a final inspection required by city ordinance and completion of subdivision off-site improvements.

The section adds a utility-control step unique to Casper: the inspector performing the final plumbing inspection must shut off and lock the water service at the curb stop, and the permit holder must request that final plumbing inspection before occupancy; water service is only restored, and the curb-stop lock removed, at the moment the occupancy permit issues. Subsection B carves out a winter exception for subdivisions completed between November 15 and March 1, letting an occupancy permit issue ahead of full off-site improvements if all-weather roadways are built to the city engineer's and Casper Public Utilities' satisfaction, the responsible party notifies the city engineer by October 15 of its intent, and a maintenance plan with a named responsible person is filed and followed until construction resumes as of March 1.

The engineering department and building official jointly administer this permit chain, and Section 15.08.050 makes any violation of the chapter a misdemeanor with a possible contractor's-license suspension.