Before starting any plumbing work that involves altering or extending a drainage system within a residential building in most Canadian jurisdictions, what is the primary administrative step a licensed plumber must take?

Question: Before starting any plumbing work that involves altering or extending a drainage system within a residential building in most Canadian jurisdictions, what is the primary administrative step a licensed plumber must take?

Answer options:

• Notify the local fire department ✅ Obtain a plumbing permit from the authority having jurisdiction
• Inform the property insurance provider
• Schedule a preliminary inspection with an electrical inspector

Correct answer: Obtain a plumbing permit from the authority having jurisdiction

Explanation: Before undertaking significant plumbing work, such as altering or extending a drainage system, Canadian plumbing codes and bylaws generally require a licensed plumber to obtain a plumbing permit from the local authority having jurisdiction. This ensures the work complies with safety and quality standards and allows for necessary inspections, unlike notifying unrelated departments or insurance providers.