How to hire a contractor you can trust

Start where the state lets you start: the license

Before anything else, look the person up. California runs a free public tool for exactly this. Go to cslb.ca.gov, click Check a License, and type in the contractor's name, business name, or license number. My number is 856378, and I want you to run it.

What you are looking for is simple. The status should say Active. The classification should match the work you need done, because a license is not one-size-fits-all. The page also shows whether the bond is current, whether workers' compensation is on file, and whether there is any complaint history. None of that is hidden. It takes about two minutes, and it is the single best thing a homeowner can do before signing anything.

If someone tells you they are licensed but gets cagey when you ask for the number, that is your answer. A licensed contractor will hand you the number before you finish the sentence.

The money rules that protect you

California puts real limits on how much a contractor can ask for up front, and these limits exist because of homeowners who got burned. Knowing them turns "trust me" into "show me."

• The down payment on a home improvement contract cannot be more than 10 percent of the contract price or 1,000 dollars, whichever is less. On a large remodel, the legal deposit is still capped at 1,000 dollars, not a percentage of the whole job.
• After the deposit, payments are tied to work. A contractor cannot collect money far ahead of what has actually been built. Each progress payment should track real, completed work, not a calendar.
• Anyone doing construction work over 1,000 dollars in California needs an active license. That figure went up from 500 dollars at the start of 2025, so older guides you find online may still say 500. The exemption for small unlicensed jobs only holds if no permit is required and no workers are hired.

If a quote asks for half the job up front, something is off. Push back, and watch how they respond.

Get it in writing, every time

In California, a home improvement contract over 500 dollars has to be in writing, and the written contract is your friend, not a formality. It should name the contractor, the business address, and the license number. It should describe the work in plain detail: what materials, what colors, what sizes, who does what. It should spell out a payment schedule, a start and a reasonable completion date, and who pulls the permits.

Any change along the way should be its own signed change order, agreed before the work happens, so the price never moves on you quietly. Warranties for labor and materials belong in writing too. There is also a cooling-off period worth knowing. For most contracts signed somewhere other than the contractor's place of business, you have a three-day right to cancel, and the contractor is required to give you that notice in writing. If a deal is good today, it is good in three days.

Why bonding and insurance actually matter

These two words sound like paperwork. They are really about who pays if something goes wrong on your property. Every active California contractor is required to carry a contractor license bond. Think of it as a small backstop the state requires, a way for homeowners to recover in certain disputes. The Check a License page tells you whether the bond is current.

Insurance is the bigger one. Liability insurance covers damage to your home if a job goes sideways. Workers' compensation covers the crew if someone gets hurt on site, and that protection matters to you more than most people realize. If a contractor has employees and carries no workers' comp, an injury on your property can become your problem. Ask to see certificates. A solid builder keeps them handy and is not offended that you asked.

The red flags the state itself warns about

The CSLB has spent years cataloging how homeowners get taken, and the warning signs are consistent. If you see these, slow down.

• No license, or someone doing licensed work over 1,000 dollars without one.
• Cash only, or pressure to leave the contract loose and informal.
• No written contract, or a vague one with no real detail.
• A large payment demanded up front, well past the legal deposit limit.
• Door-to-door pressure, "today only" pricing, or a push to start before anything is signed.
• A reluctance to pull permits, or asking you to pull them in your own name to dodge responsibility.

One more, on the back end: as a job wraps, you can ask for lien releases from the contractor and any major suppliers or subcontractors. That is your proof the people who worked on your home have been paid, so a bill does not surface later against your property. Good builders expect that request.

Questions homeowners ask