Permit rules are set locally and can change, so this guide does not list fees, thresholds or deadlines. What it can do is explain which kinds of slab leak work tend to raise permit questions, who is responsible for answering them, and what to keep on file.
In California, plumbing contractors are licensed by the Contractors State License Board. You can look up any contractor's license status and classification at cslb.ca.gov before work starts.
Work that tends to raise permit questions
| Type of work | Why it may come up |
|---|---|
| Rerouting a supply line | New pipe runs through walls or the attic, which is new installation rather than a like-for-like fix. |
| Whole-house repipe | Replaces the supply system, a substantial plumbing alteration. |
| Water heater replacement or relocation | Water heaters involve venting, gas or electrical connections and seismic strapping requirements. |
| Work on the gas line | Gas work has its own safety requirements; the gas service itself is SoCalGas. |
| Small spot repair | Often treated differently from new installation, but check with the city. |
| Service line between meter and house | May involve the public right of way near the meter; ask the city's water utility and building staff. |
How to handle permits without getting stuck
- Ask the contractor.Ask directly whether the proposed work needs a permit and whether they will pull it. Get the answer in writing on the estimate.
- Check with the city.If you are unsure, contact the City of Fullerton about permit requirements for your scope of work.
- Confirm the license.Look up the contractor's CSLB license at cslb.ca.gov to confirm it is active and in a classification that covers the work.
- Plan for inspection.If a permit is pulled, ask when an inspection is expected and whether walls must stay open until it passes.
- Keep the paperwork.File the permit, inspection sign-off, invoice and the plumber's written findings together.
Who is responsible for what
- Contractor licensing
- California CSLB; check at cslb.ca.gov
- Local permits
- City of Fullerton; check with the city
- Water meter and utility side
- City of Fullerton water utility
- Gas service
- SoCalGas
- Water heater strapping
- Required for water heaters in California
Questions to put on the estimate
- Does this work require a permit in Fullerton?
- Is the permit included in the price, and who pulls it?
- Will walls or the slab opening need to stay open for inspection?
- If the water heater is touched, will strapping and venting be brought up to current requirements?
Common questions
Does every slab leak repair need a permit?
Not necessarily. It depends on the scope and the city's current rules. Check with the City of Fullerton or ask your licensed contractor.
Can I pull the permit myself?
Owners can sometimes pull permits for their own homes, but rules vary. Ask the city, and remember the work still has to meet code.
Why does water heater strapping come up in a slab leak job?
Slab leak work often starts at the water heater. If the heater is replaced or reconnected, California seismic strapping requirements apply.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.