Choosing a licensed plumbing installer in Southern California is not complicated, but hiring the wrong person can cost more than the original job. This guide covers what to look for when hiring someone to install faucets, sinks, garbage disposals or other plumbing fixtures, and how to confirm you are working with an accountable professional.
Why licensing matters for fixture installation
In California, contracting work is licensed by the Contractors State License Board (CSLB), and the license class for plumbing is C-36 (Plumbing Contractor). Very small jobs can be exempt, but most fixture installations by a business call for a licensed contractor.
If something goes wrong with unlicensed work, such as a leak inside a wall or a drain connection that fails, your options are limited. A licensed contractor carries a bond, works under CSLB oversight and can be reported if the work is substandard.
How to check a CSLB license
The CSLB has a public license lookup. Ask for the contractor's license number before you book, then confirm that:
- the license is active, not expired or suspended;
- the classification matches the work (C-36 for plumbing);
- the name on the license matches the business you are hiring;
- there are no disciplinary actions on record.
If a contractor hesitates to give you a license number, or the number does not match the business name, treat that as a hard stop.
Installation Pros holds a CSLB C-36 Plumbing Contractor license.
Red flags to watch for
No license number anywhere. A plumbing contractor should be able to give you a CSLB number when asked. If they cannot, move on.
No business you can trace. A worker with no business name, no website and no address is hard to reach if something goes wrong. That does not mean the work will be poor, but your options are limited.
Booking with no questions about your equipment. A professional service confirms equipment fit before arriving. If a contractor schedules without asking about your make and model, existing connections or the space, surprises on the day are more likely: extra charges, delays or a job that cannot be finished.
No reviews you can check. Look at Google and Yelp yourself. Check the number of reviews, how recent they are and whether they describe real jobs. You can read ours on the reviews page.
An estimate far below everyone else's. An unusually low estimate can mean missing insurance or costs added once the job is underway.
Why the review before the appointment matters
One of the clearest differences between a professional installation service and a handyman is what happens before anyone arrives.
A proper review covers your equipment make and model, your existing connections and the job-site address, and flags anything that could affect the installation: supply line compatibility, drain layout, cabinet clearance or whether a permit is needed. It prevents a visit that ends with "I cannot do this today".
After you send a request, our team follows up to confirm scheduling, review equipment fit and coordinate access. If something needs clarifying, it happens then, not with the installer standing in your kitchen.
Tell our team what you do not know yet. That conversation is designed for it.
What a fixture installation usually includes
The scope depends on the job, but a professional installation usually covers more than connecting the new fixture.
- Faucet: removing the old faucet, checking the supply lines and shutoff valves, installing the new faucet and checking for leaks.
- Sink: setting the basin, connecting the drain assembly and checking the P-trap.
- Garbage disposal: removing the old unit if there is one, mounting the new one, connecting the drain and power, and testing it.
A good installer also points out problems outside the original scope, such as a corroded shutoff valve or a supply line worth replacing while it is accessible.
A standard installation does not include structural changes, tile or countertop work, or repairs to existing problems outside the scope. Our team flags those during the review before the appointment.
Coverage in Southern California
Installation Pros is based in Fontana and serves Los Angeles, San Bernardino, Riverside, Orange, San Diego and Ventura counties.
For a job needed within 72 hours, you can request an emergency install. It is not confirmed until our team calls, and a 50% surcharge on the total job cost applies if our team accepts the job. For payment questions, see payment questions or ask our team.
Frequently asked questions
What license should a plumbing installer have in California?
A C-36 Plumbing Contractor license from the Contractors State License Board (CSLB). You can check any license number with the CSLB license lookup before booking.
How do I check a plumber's license in Southern California?
Use the CSLB license lookup. Enter the license number or business name, then confirm the license is active, the classification is C-36 and the business name matches who you are hiring. If a contractor cannot give you a license number, do not go ahead.
What is included in a standard faucet or sink installation?
Usually removing the existing fixture, checking the supply lines and shutoff valves, installing the new fixture and testing for leaks. The condition of your existing connections can change the scope, so confirm the details before the appointment.
Why does the review before the appointment matter?
It confirms the installer knows your equipment, the condition of your connections and anything specific to the site before arriving. That prevents unfinished visits, unexpected charges and equipment that does not fit.
Is a licensed plumber worth it for a fixture installation?
A licensed contractor carries a bond and can be held accountable through the CSLB if the work is substandard. For work connected to your home's water supply, that accountability matters.
Does Installation Pros install garbage disposals?
Yes. Our team installs garbage disposals, faucets, sinks and toilets across six Southern California counties. Send a request online and our team follows up before the appointment.
Request an estimate
Request an estimate or call (909) 768-3650. Our team follows up to confirm scheduling, review equipment fit and coordinate access.