The City of Billings Building Division is dedicated to protecting life, health, and property through the enforcement of mandatory minimum building codes and standards. Most building projects in the City of Billings including new construction, demolition, plumbing, electrical, HVAC, remodeling, and repairs require building permits prior to construction. Ensuring that your project is in compliance with the currently adopted building codes, and approved by the Building Division, is an important way to protect your safety as well as your investment.

On September 1, 2022, the City of Billings adopted the 2021 International Codes. Current
codes can be found at Billingsmt.gov/building. Please direct any building code or permit
questions to 657-8270 or pemits@billingsmt.gov.