All plumbing installations must be designed and installed in accordance with the Oregon Plumbing Specialty Code, any other relevant Specialty Codes, Title 25 and this Chapter. Permits and inspections are required for all plumbing work except as specifically exempted by this Title.

Existing plumbing that was lawfully in place in Portland as of January 1, 2008, or that was constructed or relocated under a valid permit after that date is considered an existing nonconforming condition as provided in this Title.