Why gas work is permitted
Gas piping hides in attics and walls, and a mistake may not show up until long after the contractor has left. A permit puts a second set of eyes on the work: the city's inspector checks sizing, materials, valves, venting where an appliance is involved, and the pressure test, often before the piping is covered up.
Permit rules, fees and which jobs are exempt are set by each city. This guide does not quote them. For a home in Fullerton, check with the City of Fullerton's building division; for a home in a neighboring city, check with that city.
Jobs and how permits usually apply
| Job | Permit usually expected? | Notes |
|---|---|---|
| New gas line to an appliance | Usually yes | Includes sizing and a pressure test |
| Upsizing a line for a tankless water heater | Usually yes | Water heater replacement may need its own permit |
| Buried line to a barbecue, fire pit or pool heater | Usually yes | Burial, materials and shutoffs are checked |
| Repairing a leak in house piping | Often | Ask the city; depends on extent of the work |
| Capping a line for a removed appliance | Varies | Ask the city |
| Swapping a flexible connector on an existing appliance | Varies | Ask the city; often treated as minor |
How a permitted gas job usually goes
- Scope and plan.The contractor confirms which appliances are on the line, the pipe sizes and the route.
- Apply.The licensed contractor doing the work typically applies for the permit with the city.
- Rough-in and test.Piping is installed and put on a pressure test.
- Inspection.The inspector checks the work and the test, often before walls or trenches are closed.
- Final.After appliances are connected and lit, any final inspection is completed and the permit is closed.
What an inspector tends to look at
Permitted vs. unpermitted gas work
With a permit
- Independent inspection of hidden work
- A record that the work was approved
- Fewer questions when the house is sold
- Contractor accountable to an inspection
Without one
- No one checks the work but the installer
- May have to be opened up later for inspection
- Can complicate a sale or future remodel
- Harder to show the work was done to code
Questions to settle before work starts
- Does this job need a permit in my city?
- Will you pull the permit under your CSLB license?
- Is the permit fee included in your written price?
- When will the inspection happen, and do I need to be home?
- Will you provide a copy of the closed permit when the job is done?
Common questions
Can I pull the permit myself as the owner?
Some cities allow owner-builder permits for certain work. Check with the city, and understand that you then take responsibility for the work.
What if a contractor says a permit is not needed?
Confirm it with the city's building division yourself. It takes one call or a visit to the city's website.
How do I find old permits for my house?
Ask the city's building division how to request permit records for your address.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.