What you are really choosing
With a hidden leak, you are hiring judgment as much as labor. The person who finds the leak shapes how big the repair becomes. A careful, well-explained detection can mean a small opening and a simple fix; a rushed one can mean extra demolition or a recommendation that is larger than the situation needs.
Use the checklist below on any company you contact, including us. This is a preview site for Fullerton Leak Detection, and our licensing details will be published here once confirmed, so ask for them and check them yourself.
License and business
- CSLB license number provided in writing.
- License looked up at cslb.ca.gov and shown as active.
- License classification covers plumbing work.
- Business name on the license matches the estimate.
- Confirmation that your Fullerton address is in their service area.
Detection approach
- Explains how they will confirm the leak at the meter.
- Will isolate hot and cold sides and branches before searching.
- Names the equipment they plan to use.
- Explains what happens if the first opening misses.
- States whether detection is priced separately from repair.
Repair proposal
- Written scope with the method chosen and why.
- Options presented, not only one large job.
- Who opens and who patches floors, walls and concrete.
- Whether a city permit is needed and who obtains it.
- Pressure test or meter check after the repair.
- Exclusions listed, such as flooring, drywall finish or mold work.
- Who does the work: employees or subcontractors.
Red flags
- IfThey will not give a license numberDo not proceed until they do and you have checked it.
- IfThey recommend a full repipe without explaining the findingsAsk for the evidence in writing and consider a second opinion.
- IfThey want to start opening the floor before isolating linesAsk why the search area has not been narrowed first.
- IfThey pressure you to sign immediatelyShut the water off if needed and take time to compare.
Compare up to three companies
| Item | Company A | Company B | Company C |
|---|---|---|---|
| License verified | |||
| Detection method explained | |||
| Detection and repair priced separately | |||
| Repair method proposed | |||
| Patching included | |||
| Permit handled | |||
| Retest after repair |
Common questions
Is a specialist leak detection company better than a general plumber?
Either can be fine. What matters is the license, the method and how clearly they explain their findings.
Should I get more than one opinion?
For large repairs such as reroutes or repipes, a second opinion from another licensed plumber is reasonable.
Where can I check complaints about a contractor?
The CSLB license lookup at cslb.ca.gov shows license status and certain disciplinary information.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.