Old Town Yorba Linda: Slab Leak Notes for Older Homes

A neighborhood of mixed eras

Old Town Yorba Linda, around Main Street and the original town center, grew over a long stretch of the city's history. Streets nearby can hold an older cottage, a mid-century ranch house and a newer infill home side by side. Foundations and piping vary just as much.

Before thinking about slab leak repair, find out what you have. Your property records or a plumber's visit can tell you the build year, whether the home sits on a concrete slab or a raised foundation with a crawlspace, and what the supply lines are made of.

Slab foundation vs raised foundation

Slab-on-grade

Supply lines often run under the concrete
Leaks hide below the floor
Repairs mean cutting the slab or rerouting

Raised with crawlspace

Pipes usually reachable from below
Leaks may be visible in the crawlspace
Slab leak repair methods may not apply

Things to know in older Old Town homes

Supply lines: Older homes may have galvanized steel or copper; some have been partly repiped over the years
Sewer laterals: Older laterals are often cast iron or clay
Trees: Mature trees can send roots into older clay or cast-iron laterals
Water: Hard water, a blend of groundwater and imported water
Water provider: Check your bill; most of Yorba Linda is served by the Yorba Linda Water District

Old Town homeowner checklist

Confirm whether your home is slab or raised foundation.
Find out whether past owners repiped any part of the house.
Locate the house main and water heater cold inlet.
Run a meter test if you notice warm floors or a high bill.
Ask about the sewer lateral separately if you have slow drains or large trees near the line.
Check with the City of Yorba Linda about permits before work, especially on older or historic properties.

Questions to ask a plumber in Old Town

Is my house on a slab, and where do the supply lines run?
What are my supply lines made of, and are they original?
If I have a crawlspace, can the leak be reached from below?
Are there permit considerations for my property? I will check with the city.

Map of Old Town Yorba Linda. It shows an area, not an office or a job site.

Common questions

Do all Old Town homes have slab foundations?

No. The area has homes from several eras, and some sit on raised foundations. Check yours.

Who do I call about my water meter?

Your water provider, listed on your bill.

Can old galvanized pipe cause slab leaks?

Any aging supply pipe under a slab can leak. A plumber can tell you what you have.

General information for Yorba Linda, not a quote or professional advice. In an emergency, call 911.