Quick answer
- Water heater, HVAC changeout, repipe, and sewer work almost always require a permit
- Your licensed contractor pulls the permit — homeowners normally don't
- Permitted work is inspected so it meets current safety and energy code
- Unpermitted work can create insurance, resale, and disclosure headaches
- Specifics vary by jurisdiction — verify with your local building department
When this applies
Replacements and new installations
As a rule of thumb, replacing or adding a system that touches gas, water, the electrical panel, venting, or the sewer needs a permit. Like-for-like repairs (a part swap) usually don't, but the replacement of the appliance or pipe itself typically does.
When you're buying or selling
Permit history matters at resale. California sellers disclose known unpermitted work, and buyers (and their lenders or insurers) increasingly ask. Pulling permits now keeps your paper trail clean for later.
How it works
Who pulls the permit
A CSLB-licensed contractor pulls the permit under their license and is responsible for the work meeting code. When a homeowner pulls their own 'owner-builder' permit, they take on that liability themselves — which is rarely the right call for gas, electrical, or sewer work.
The inspection process
After the work is done (and sometimes mid-job, before anything is concealed), a city or county inspector verifies it meets the current California codes. Once it passes, the permit is finaled — your record that the job was done right.
What we handle for you
We determine whether your job needs a permit, pull it, schedule the inspection, and meet the inspector on site. You don't have to navigate the building department yourself.
What to watch out for
Skipping the permit to save time or money
Unpermitted work can mean a failed insurance claim after a leak or fire, fines, and being ordered to expose and redo finished work. The short-term savings rarely hold up.
Discovering unpermitted work at the worst time
Unpermitted water heaters, HVAC changeouts, and sewer work routinely surface during a home sale, stalling deals. A permitted job avoids that surprise.
Planning a replacement? We'll handle the permit and inspection for you.
Frequently asked questions
Do I really need a permit for home plumbing or HVAC work?
For replacements and installations — water heaters, AC/furnace changeouts, repipes, sewer lines, panel and gas-line work — yes, in nearly every California jurisdiction. Minor repairs usually don't. When in doubt, your contractor or local building department can confirm.
Who is responsible for pulling the permit?
Your licensed contractor pulls it under their license and stands behind the work passing inspection. We do this for you as part of the job.
What happens if previous work on my home wasn't permitted?
It can often be 'permitted after the fact' through a retroactive permit and inspection, sometimes with corrections. We can assess what's there and advise on the cleanest path, which is especially useful before selling.
Keep exploring
Reviewed by John Stevenson Plumbing, Heating & Air. General guidance based on the California Plumbing, Mechanical, and Energy (Title 24) Codes and our field experience pulling permits across North San Diego County and Orange County. Local amendments vary — confirm specifics with your city or county building department. Verify any contractor's license at the Contractors State License Board (cslb.ca.gov). Last updated 2026-06-25.