Repiping in San Diego, CA

Signs it is time

• Several pinhole leaks within a short stretch of time
• Brown or rusty water when a tap first opens
• Low pressure throughout the house, not just at one fixture
• Galvanized steel supply pipe still in service
• Repeated slab leaks in the same buried runs

San Diego homes and aging pipe

About half of San Diego homes were built before 1980, with a median year built around 1979. Older dense communities near Balboa Park, such as Hillcrest and North Park, can still have galvanized supply lines that corrode inside and slowly shrink the opening. City water is also hard, with the City's report listing averages of roughly 13.8 to 14.2 grains per gallon from its own treatment plants, and mineral scale adds to the restriction in pipe that is already rough.

PEX or copper

Raised-foundation homes are often simpler to repipe because the crawl space gives open access under the floor. Slab homes usually get new lines routed through the attic or walls, leaving the buried pipe abandoned in place.

How a repipe usually goes

1. Walk-through to map fixtures and pick the route
2. Permit from the City's Development Services Department
3. Small openings in drywall, new pipe run, old lines capped
4. Pressure test and inspection
5. Drywall patching, often by a separate trade

Permits

The City requires a Plumbing/Gas Permit for replacing a plumbing system. Minor work can qualify for a Simple No-Plan permit online, while other work and historic properties need a Plan permit. Your plumber can confirm which applies.

What changes the cost

Bathroom and fixture count, material choice, one or two stories, crawl space or attic access, and wall repair afterward. A partial repipe costs less but keeps some old pipe in use. Ask to see a cut sample or the visible condition of your existing pipe before agreeing on scope, and ask whether the quote covers fixture shutoff valves and the main shutoff as well. Replacing those while the walls are open saves a second visit later.