Before starting a new plumbing installation in a residential basement, what is the primary reason why a plumber must obtain a permit from the local authority having jurisdiction (AHJ)?

Question: Before starting a new plumbing installation in a residential basement, what is the primary reason why a plumber must obtain a permit from the local authority having jurisdiction (AHJ)?

Answer options:

• To ensure the plumber is registered with the local union.
• To guarantee the project will be completed on schedule. ✅ To ensure compliance with the National Plumbing Code and local bylaws, and to allow for inspections.
• To obtain a list of approved materials from the AHJ.

Correct answer: To ensure compliance with the National Plumbing Code and local bylaws, and to allow for inspections.

Explanation: The primary reason for obtaining a plumbing permit is to ensure that the proposed work complies with the National Plumbing Code and local bylaws, and to facilitate mandatory inspections throughout the installation process. This safeguard protects public health and safety by verifying that plumbing systems are installed correctly. Permits are not related to union registration, project schedules, or providing material lists.