Checking a contractor

  1. Ask for the license number.In California, plumbing contractors are licensed by the Contractors State License Board. Ask for the number before work starts.
  2. Look it up at cslb.ca.gov.Confirm the license is active, the business name matches, and the classification covers plumbing work.
  3. Check bonding and insurance details.The CSLB lookup shows bond information and, where applicable, workers' compensation coverage.
  4. Ask who will do the work.Find out whether employees of the licensed company or subcontractors will be at your home.
  5. Get it in writing.The scope, method and price should be written down before work begins.

Questions to ask on the phone

  1. Is my Cypress address in your service area?
  2. What is your CSLB license number?
  3. How do you price drain cleaning, and is there a trip or diagnostic charge?
  4. Will you clear the line through the cleanout, and do you bring a camera?
  5. What happens if the first attempt does not clear the line?

Questions to ask at the house

  1. What do you think is causing this, and why?
  2. Which method will you use, and what are the risks for my pipe?
  3. Can I watch the camera footage, and can I have a copy?
  4. If you recommend repair, what are all the options, from least to most invasive?
  5. Can you put the recommendation and price in writing so I can think it over?

Warning signs

When a second opinion makes sense

  • IfYou are told the whole lateral or all the drains must be replacedThenGet the footage and ask another licensed plumber to review it.
  • IfSewage is entering the house right nowThenGet the line cleared first; decide on repairs once the emergency is over.
  • IfRepeated cleanings have not solved the problemThenA fresh look with a camera can identify a cause that was missed.

Common questions

Does a plumber need a license for drain cleaning?

California requires a CSLB license for many contracting jobs. Hiring a licensed plumbing contractor and checking the license at cslb.ca.gov is the safest approach.

What if the plumber cannot clear the line?

Ask in advance what happens then, whether that is a different method, a camera inspection or a referral, and how each is priced.

Should I get more than one estimate?

For an urgent clog you may not have time. For a repair or replacement recommendation, comparing written estimates is worthwhile.

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