Plumber License and Insurance

Hiring someone to work on your home is a big act of trust. Whether you are dealing with a small leak or a major remodel, you want to know that the person entering your house is a qualified professional. In California law, anyone who performs home improvement work totaling $1,000 or more must hold a valid contractor’s license. Verifying this license is one of the simplest and most effective ways to protect your property, your family, and your wallet.

Before you allow any work to begin on your property, taking a few minutes to check a contractor’s credentials can save you from a lifetime of stress. Reach out to Gallegos Plumbing today by contacting us through our online form to speak with a team that values transparency and local compliance.

Why Licensing is Your First Line of Defense

A California plumbing license is more than just a piece of paper. To earn a C-36 Plumbing Contractor license, an individual must prove they have at least four years of journey-level experience in the trade. They must also pass a comprehensive state exam that covers plumbing codes, safety regulations, and business laws. When you hire a licensed professional, you are hiring someone who has met a strict state standard for expertise.

Hiring an unlicensed person can lead to several risks:
  • Substandard Work: Unlicensed individuals may not be aware of current safety codes, leading to leaks or water damage.
  • Insurance Issues: Most homeowner insurance policies will not cover damage caused by an unlicensed contractor.
  • Financial Liability: If an unlicensed worker gets hurt on your property, you could be held responsible for their medical bills.

How to Verify a License in 3 Easy Steps

The California Contractors State License Board (CSLB) makes it very easy for homeowners to check on any contractor. You do not need to be a tech expert to use their system. All you need is the contractor’s license number, which should be clearly displayed on their website, business cards, and service vehicles.

Follow these simple steps:
  1. Visit the CSLB Website: Go to cslb.ca.gov and look for the “Check a License” button.
  2. Enter the Number: Type in the contractor’s 6 or 7-digit license number.
  3. Review the Status: Look for the word “Active” in green. This means the contractor is currently authorized to perform plumbing services in California.

What Else Should You Look For?

While an “Active” status is essential, there are other details on the CSLB page that tell you more about the company’s reliability. A license check provides a transparent look into how the business is run and how they handle their professional obligations.

Check for these important details:
  • Workers’ Compensation: If the company has employees, they must have workers’ comp insurance. This protects you if a technician is injured while working at your home.
  • Bonding: Contractors must have a bond on file. This is a type of financial protection for consumers if the contractor fails to follow state laws or complete a project.
  • Classification: Ensure they have a C-36 license for plumbing work. While a general contractor (B license) can manage a large remodel, specific commercial plumbing or complex residential repairs usually require a specialist.

The Difference Between Licensed and Insured

Many homeowners use the words “licensed” and “insured” as if they mean the same thing, but they are actually different. As we discussed, the license proves their skill and state registration. Insurance, specifically “General Liability,” protects your property if the contractor accidentally causes damage, such as a pipe bursting during a repair.

A reputable professional will always be happy to provide you with:
  1. Their current CSLB license number.
  2. A certificate of General Liability insurance.
  3. Proof of Workers’ Compensation if they have a crew.

Asking for these documents is not rude; it is a sign that you are a responsible homeowner. Any contractor who is proud of their business will be more than happy to provide this information to put your mind at ease.

Red Flags to Watch Out For

Sometimes, it can be hard to tell if someone is being honest about their credentials. In California, unlicensed individuals often try to fly under the radar by offering very low prices. While everyone loves a bargain, a price that is significantly lower than other quotes is often a sign that the person is cutting corners on licensing or insurance.

Watch out for these warning signs:
  • The contractor asks for a large cash deposit before any work starts.
  • They tell you that a permit is not necessary for a job that clearly requires one.
  • Their “contract” is a simple handshake or a handwritten note with no license number.
  • They try to pressure you into making a decision quickly before you can check their background.

Trust the Professionals at Gallegos Plumbing

At Gallegos Plumbing, we believe that transparency is the key to a great relationship with our neighbors. We are proud to be a fully licensed and insured team serving our local community. Our goal is to provide high-quality service while ensuring that every job we do meets the strict standards set by the State of California. We encourage all homeowners to do their homework because a well-informed customer is our favorite kind.

If you have questions about an upcoming project or want to verify our credentials, contact Gallegos Plumbing to speak with a helpful member of our team.

Contractor Licensing Frequently Asked Questions


No, a business license is issued by a city or county to allow a company to operate in that area. A contractor’s license is issued by the state and proves that the individual has the technical skills and experience to perform plumbing work safely.


If the work is over $500, you should not hire them. You can report unlicensed activity to the CSLB to help protect other homeowners in your community. It is always better to wait for a qualified professional than to risk the safety of your home.


Generally, a C-36 plumbing contractor should stick to plumbing. While some tasks overlap, specialized work like a new roof or a main electrical panel upgrade usually requires a different license classification to ensure it meets safety codes.


Yes, California contractor licenses must be renewed every two years. When you check the CSLB website, you will see the expiration date. If the license has expired, the contractor is not legally allowed to perform work until it is renewed.

company icon