State License
STATE RequiredDLI Bureau
Plumbing contractors operating in Billings, Montana, must navigate a dual-layer regulatory environment. At the state level, the Montana Department of Labor and Industry governs professional licensing, requiring all plumbers to hold valid Journeyman or Master credentials. Businesses must also maintain active registration with the state, which includes proof of necessary insurance coverage.
Locally, the City of Billings Building Division manages the permitting and inspection process. All plumbing installations must adhere to the Uniform Plumbing Code. Contractors are responsible for securing permits before starting work, ensuring that all installations pass mandatory inspections to maintain compliance with municipal safety standards.
Always verify if your project falls under County jurisdiction (outside city limits) or City jurisdiction.
Always verify if your project falls under County jurisdiction (outside city limits) or City jurisdiction.
This file exists to show what changes when the trade is Plumbing and the jurisdiction is Billings, Montana.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement.
A practical floor for Billings, Montana. Verify each amount with the issuing authority.
Fees are calculated based on the total valuation of the plumbing work.
Contractor registration must be renewed annually with the state.
Re-inspection fees may apply if work fails initial inspection.
A practical path for Plumbing contractors in Billings.
Each item names the issuing authority, cycle, and citation.
When confirmed local data is unavailable, this section stays marked for verification.
Performing plumbing modifications without a valid permit.
Failure to install proper venting per UPC standards.
Failure to install required backflow prevention devices.
Store licenses, permits, policies, and renewal dates in one place.