Five checks that work at any hour

  1. Get the CSLB license number

    Ask for it on the phone. California contractors are licensed by the Contractors State License Board.

  2. Look it up at cslb.ca.gov

    The online lookup shows whether the license is active, its classification and the business name it is issued to.

  3. Match the name

    Make sure the business name on the license matches the business you are talking to and the name on the truck or invoice.

  4. Ask who is coming

    Ask whether the person sent is an employee of that business or a subcontractor.

  5. Confirm the price process

    Ask how pricing works after hours and confirm you will get a written price before work starts.

Terms you may see

CSLB
California's Contractors State License Board, which licenses contractors and offers the public license lookup.
C-36
The CSLB license classification for plumbing contractors.
Active license
A license in good standing on the CSLB lookup, as opposed to expired, suspended or revoked.
Workers' compensation
Coverage the CSLB lookup also shows information about; ask the contractor if anything is unclear.
Permit
City approval required for some plumbing work; check with the city building department.

Why it is worth the extra minutes

During an emergency, the urge is to get anyone to the door. But once the main water is closed and the house is safe, the pressure drops. Those few minutes are the right time to check who you are inviting in.

Unlicensed work can leave you with repairs that fail inspection, no clear recourse if something goes wrong, and trouble with an insurance claim. A real license check takes far less time than undoing a bad repair.

When they arrive

  • Confirm the business name matches what you checked.
  • Ask them to show you the problem and explain the cause.
  • Get the price in writing before work begins.
  • Ask whether the repair needs a permit.
  • Keep the invoice, photos and any camera recordings.

Phone script

  1. What is your business name and CSLB license number?
  2. Do you serve my part of Anaheim at this hour?
  3. Is there an after-hours or trip charge?
  4. Will the plumber who comes be an employee or a subcontractor?
  5. Will I get a written price before you start?

Common questions

Can I check a license on my phone at night?

Yes. The CSLB license lookup at cslb.ca.gov is available online at any hour.

What if the plumber says they do not need a license?

California generally requires a contractor's license for plumbing work above a small dollar threshold. Check the CSLB site for the current rules and be cautious.

Do online reviews replace a license check?

No. Reviews can help, but only the CSLB lookup confirms the license status.

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