A pool is one of the biggest checks most homeowners ever write to a contractor, and most of the money changes hands before you can swim. California has specific rules for pool contracts. Here is how to use them to pick a builder or remodeler you can trust.
Last updated October 15, 2026. Free to read, no sign-up. Sources are linked at the bottom.
Step 1: Check the license (5 minutes, free)
In California, anyone who does a home improvement job worth $1,000 or more (labor and materials together), or any job that needs a building permit, or uses employees, must hold an active license from the Contractors State License Board (CSLB). The smaller-job exemption rose from $500 to $1,000 on January 1, 2025.
- Ask for the license number in writing. Licensed contractors must put it on their bids, contracts, and ads.
- Look it up free at CSLB's Check a License page.
- Confirm three things: the status is active, the business name and address match your quote, and the classification fits the work. Pool construction and remodeling is the CSLB C-53 Swimming Pool classification. A B General Building contractor may also build pools. Resurfacing-only companies should still show a classification that covers the work.
- On the same page, look at the bond (required to stay licensed), workers' compensation (a policy on file, or an exemption that means "no employees"), and any disciplinary or legal actions.
A company that arrives with a crew but shows a workers' comp exemption is a red flag: if an uninsured worker gets hurt on your property, you can be pulled into it.
Step 2: Ask for insurance in writing
A CSLB license is not insurance. Ask for a certificate of general liability insurance that names the business on your quote, and check the dates. If anything looks off, call the insurer listed on the certificate. Liability insurance covers damage to your home or a neighbor's property; workers' comp covers the crew. You want both when more than one person is on the job.
Step 3: Get 3 written, itemized quotes
Ask at least three companies to quote the same scope so you compare like with like. A useful quote lists:
- Every item of work, with materials named by brand, model, or grade where it matters
- Who pulls and pays for permits, and whether inspection fees are included
- Demolition, haul-away, and cleanup
- Start date, expected finish date, and what can cause delays
- A payment schedule tied to finished stages of work
- Warranty terms in writing
A much lower bid usually means something is missing. Ask each company what is not included.
For remodels, published ranges (HomeGuide) include resurfacing about $6–$8 per sq ft for plaster and $7–$15 for pebble finishes, retiling about $2,500–$5,000, and coping about $40–$80 per linear foot. Estimates only; try our pool remodel cost estimator. For new pools, CSLB recommends a plan and scale drawing with shape, dimensions, and equipment in the contract, so there’s no argument later.
Permits
New pools always need a building permit, and so do many remodels that touch structure, plumbing, gas, or electrical. Make the contractor responsible for permits and inspections in the contract.
California’s Swimming Pool Safety Act requires a new or remodeled pool at a home to have at least two of seven drowning-prevention safety features (for example, a removable mesh fence, a safety cover, or exit alarms on doors). Ask each builder which two they include and what they cost; it should be in every quote.
CSLB also says not to make the final payment until plastering, equipment, decking, and any fencing in the contract are complete.
The contract and payments: California rules that protect you
- Down payment: no more than 10% of the contract price or $1,000, whichever is less (CSLB).
- Pay as work is done. Pay only for work that's completed, never ahead of it.
- Right to cancel: for many home improvement contracts you have 3 business days to cancel, and 5 business days if you're 65 or older (CSLB homeowner checklist).
- Changes in writing, signed before the extra work starts.
- Liens: your contract should include the "Notice to Owner" about mechanics liens. An unpaid supplier or sub can file a lien even if you paid the contractor, so ask for lien releases as you pay.
- Don't pay in cash, and keep a job file with the contract, receipts, photos, and warranties.
Warranties
Ask for the warranty on the structure (shell), the finish (plaster or pebble), and the equipment (pump, filter, heater, automation; usually the manufacturer’s). Ask whether equipment warranties require registration or a specific service schedule.
How to read reviews
- Read the 1- and 2-star reviews first, then how the owner replied. A calm, specific reply that fixes the problem is a good sign.
- Look for recent reviews describing jobs like yours in your part of the county.
- Be wary of a sudden burst of short 5-star reviews with no details.
- Ask for 2 or 3 recent customers you can call, or finished jobs you can drive by.
- Reviews tell you about service. They don't replace the license and insurance check.
Questions to ask before you sign
- How long have you been licensed under this business name?
- Who will be on site: your employees or subcontractors? Are subs licensed and insured?
- Who pulls the permit, and is the inspection fee in the price?
- What is not included in this quote?
- What warranty do you give on labor, in writing, and for how long?
- How are change orders priced if you find a problem after you start?
- Which two of the seven safety features are included in this price?
- Which stage of work triggers each payment?
- How are soil and excavation surprises and haul-off priced?
Red flags
- No license number, or a number that belongs to a different business name
- A big deposit, or pressure to pay in cash
- "Today only" pricing or door-to-door offers after a storm or fire
- No written contract, or one that is vague about materials and dates
- Asking you to pull the permit as the "owner-builder" (that makes you responsible)
- Payments that run ahead of the work
- Asking for final payment before plaster, equipment, decking, and any required fencing are complete
Questions
How do I check a pool builder license in California?
Ask for the license number and search it free on the CSLB Check a License page at cslb.ca.gov. Make sure the status is active, the business name matches your quote, and the classification (C-53 Swimming Pool) fits the work. The same page shows bond, workers’ compensation, and any disciplinary actions.
How much deposit can a pool builder ask for in California?
For most home improvement contracts, no more than 10% of the contract price or $1,000, whichever is less, according to CSLB. After that, pay only for work that is finished.
Do I need a licensed contractor for a small job?
Since January 1, 2025, California’s minor-work exemption covers jobs under $1,000 including labor and materials, and only if no building permit is needed and the person has no employees. Anything else needs a CSLB license.
Can I cancel a home improvement contract after signing?
Often yes. CSLB says a 3-day right to cancel applies to many home improvement contracts, and a 5-day right applies if you are 65 or older. Check whether it applies before work starts.
What safety features does a new pool need in California?
California’s Swimming Pool Safety Act requires at least two of seven drowning-prevention features when a pool is built or remodeled at a home, such as an isolation fence, a safety cover, or exit alarms. Ask your builder which two are included.
Sources (checked October 15, 2026)
- CSLB: Check a License
- CSLB: Hire a Contractor (consumer guide)
- CSLB: Homeowner checklists (down payment, 3-day and 5-day cancel, payment schedule, lien notice)
- CSLB: Senior Scam Stopper
- CSLB: Swimming pool construction details to consider (down payment, final payment)
- CSLB: C-53 Swimming Pool classification
- California Health & Safety Code §115922 (Swimming Pool Safety Act)
- HomeGuide: pool resurfacing cost