How to Avoid Being Ripped Off by a Contractor: 10 Ways to Protect Yourself

Written By: Paul Dashevsky
Last updated Aug 19, 2026
Written By: Paul Dashevsky
Last updated Aug 19, 2026
contractors overcharging

To avoid being ripped off by a contractor, hire only licensed, insured pros, check references and reviews, get a detailed written contract, never pay large sums up front, and keep payments tied to completed work. Most scams and disputes trace back to skipping one of these steps. Here’s how to protect yourself before and during a project, plus how to find a vetted contractor.

The best way to avoid being ripped off by a contractor is to vet them thoroughly before you sign anything: confirm the license and insurance, get at least three bids, cap your deposit at the legal limit, and tie every payment to completed work. Most rip-offs are preventable at the hiring stage, long before the first payment. Below are 10 steps that protect you before and during your project.

Here at GreatBuildz, a free service that connects California homeowners with reliable, thoroughly vetted contractors, we talk with homeowners every day about finding the right contractor and steering clear of the bad ones. These are the same protections we build into our own screening.

Key Takeaways

  • Verify the license and insurance at cslb.ca.gov before you hire. An unlicensed or uninsured contractor is the single biggest rip-off risk.
  • Cap your deposit: in California a contractor cannot collect more than the lesser of $1,000 or 10 percent of the contract price before work starts.
  • Get at least three bids so you can spot a price that is too high, or a lowball bid that will come back as change orders.
  • Tie payments to progress: never let what you have paid get ahead of the work completed.
  • Watch the red flags: high-pressure sales, large upfront demands, cash-only requests, and no written contract.

1. Research and vet your contractor

researching contractor

Thorough vetting is your strongest protection. When you are about to spend tens or hundreds of thousands of dollars, do not choose the cheapest bidder or the one who simply “feels right.” Plenty of friendly, charismatic contractors have ripped people off precisely because they are so likeable.

At GreatBuildz we run every contractor through a 10-step vetting process before they join our network, and you should complete as many of those steps as you can on your own. Work through them and one of two things happens: you catch a red flag, or everything checks out and you can hire with confidence.

2. Make sure the contractor is licensed and insured

Every contractor should hold a valid, active license and carry proper insurance. Hiring an unlicensed or uninsured contractor sharply raises your odds of being ripped off. If someone will not meet the basic requirements of their trade, there is little reason to trust them to treat you fairly.

A contractor with an expired or suspended license, or a complaint on their record, is a higher risk. Working with one who has no insurance or bond leaves you unprotected if something goes wrong. You can check any California contractor’s license status and complaint history free at the CSLB website.

3. Get multiple bids and compare them

multiple contractor bids

Always get at least three contractor estimates. Beyond helping you set a realistic budget, comparing bids protects you from overpaying. With only one bid, you have no way to know whether it is far higher than the job should cost.

A bid that comes in far below the others is its own warning. A lowball contractor may plan to make up the difference with change orders and extra costs mid-project, use cheap or used materials and unqualified labor, or realize partway through that they are losing money and walk off the job. Any of those can turn into a renovation nightmare.

4. Do not pay a large deposit upfront

California law caps the deposit a contractor can collect before work begins at the lesser of $1,000 or 10 percent of the total contract price (California Business and Professions Code 7159). Do not exceed that amount, or a dishonest contractor can simply take your deposit and disappear.

If a contractor asks for more to buy initial materials, get a receipt or a clear written list of exactly what is being purchased and from which supplier. A legitimate materials deposit is documented, not a vague large payment.

5. Check references and past work

check contractors work

Online reviews are a starting point, but they are easy to game with fake or purchased ratings, and most contractors have a mix of five-star and one-star reviews. Speaking to real past clients is far more reliable. Ask the contractor for several references and actually call them.

Ask each past client whether the contractor stayed near budget, communicated well, and finished the work. Request photos of the completed project, or ask to see it in person. A genuinely satisfied client is usually proud of their remodel and happy to show it off, which also confirms they are a real client and not a friend posing as one.

6. Manage the project and stay involved

Stay actively involved rather than handing the project off and hoping for the best. Check on the work every few days and meet your contractor onsite about once a week. Quality issues come up on every project, and the sooner you catch them, the cheaper and easier they are to fix.

Catch a problem after the job is “done” and the correction can be slow and expensive. Catch it as it happens and the contractor will usually fix it quickly for little or no cost. Staying involved also lets you spot inferior materials or unqualified labor early, so you can call it out and withhold the next payment until it is corrected.

7. Understand change orders and avoid scope creep

A common way homeowners get overcharged is through change orders (formal, priced changes to the contract during the job). Some are legitimate when a real surprise comes up or you change your mind. Others are inflated, because the contractor knows you have little bargaining power to say no in the middle of a project.

If a change-order price seems high, do quick research before you agree: check material prices online, ask someone in the trades, or get a ballpark from another contractor or handyman. Use what you find to negotiate a fair number. For the full playbook on disputing an unfair extra charge, see our guide on what to do when a contractor is overcharging you.

8. Avoid high-pressure sales tactics and scams

dont get ripped off by contractor

Be wary of any contractor who will not leave until you sign, keeps pushing reasons you must hire them now, or dangles a discount that expires the moment they walk out the door. Walk away from that pressure no matter how likeable the salesperson is, and take the time to do your research first. High-pressure and door-to-door remodeling pitches have a long track record of scams and poor-quality work.

9. Get a structured payment schedule

Never let your payments get ahead of the work. If you have paid 80 percent of the total but the project is only 40 percent done, a dishonest contractor has every incentive to slow down or disappear. Set a payment schedule that ties each payment to a completed stage of construction. That way you are never out more money than the work justifies, and if you do have to replace the contractor, you still have funds to finish the job.

10. Know the red flags of a bad contractor

avoid being ripped off by contractor

Even after vetting, keep an eye out for warning signs. A contractor who insists they are the only one you should hire is using a high-pressure tactic. One who does all the talking and never listens to your needs is a concern. A license issued only in the last year or two may mean limited experience. And a very large operation with lots of salespeople and heavy advertising can carry high overhead that you end up paying for. None of these alone is disqualifying, but together they help you judge who to trust.

Frequently Asked Questions

What is a contractor bond, and why does it matter?

A contractor bond is a form of financial protection. If you have a valid issue with the contractor or the work, you may be able to file a claim against their bond to be compensated. Confirm the contractor is bonded before you hire.

Is a verbal contract with a contractor okay?

No. Always put the agreement in writing so there is clear documentation of the scope, price, and terms. A verbal-only contract leaves you with little recourse if there is a dispute.

How do I check a contractor’s credentials?

Go to the California State License Board website at cslb.ca.gov and look up the contractor’s license status and any complaint history. It is free and takes a few minutes.

Should my contractor offer a warranty?

Yes. A warranty should be stated explicitly in your written agreement, including its length and any exclusions. If a contractor will not put a warranty in writing, treat that as a red flag.

Is it safe to pay a contractor in cash?

No. Paying in cash leaves you with no record of the payment, which makes it easy to be ripped off and hard to prove what you paid. Use traceable payment methods and keep receipts.

What should I do if I have a dispute with my contractor?

Start by calmly asking for an in-person conversation to lay out your concerns and the fair pricing you researched. If that does not work, escalate through a warning letter, a CSLB complaint, a claim against the bond, or small claims court, as covered in our overcharging guide.

What should be included in a contractor contract?

A solid contractor agreement should spell out the scope of work, materials, costs, timeline, payment schedule, warranty, and exclusions, among other terms. The more detail, the fewer “was that included?” disputes later.

Why are some contractor quotes so cheap?

A very low quote usually means one of a few things: the contractor left items out of your scope, misunderstood the project, or is desperate to win the job and plans to make it up in change orders. Compare bids line by line rather than by the bottom number.

What are my rights if a contractor does not finish the job?

You can file a claim against the contractor’s bond, file a complaint with the CSLB, or sue in small claims court, which in California handles claims up to $12,500 for individuals ($6,250 for businesses). Larger disputes go to superior court.

Who is responsible for pulling permits, me or the contractor?

The contractor is normally responsible for pulling permits, though in some cases the architect, designer, or homeowner can. Be cautious if a contractor asks you to pull the permit yourself, as it can shift liability to you.

Choosing the right contractor is the difference between a smooth remodel and a costly one. To be matched with trusted, pre-vetted contractors in California, contact GreatBuildz today at (888.668.2454) or visit www.greatbuildz.com for more information.

<a href="https://www.greatbuildz.com/author/paul/" target="_self">Paul Dashevsky</a>

Paul Dashevsky

Paul Dashevsky is the co-founder of GreatBuildz and Co-CEO of Maxable Space, with over 25 years of experience in real estate development, construction, and investment. Since he co-founded GreatBuildz in 2019, the company has evaluated 20,000+ California contractors and helped 2,000+ homeowners. He has personally built and renovated 350+ homes and has been featured in Forbes, the Los Angeles Times, and US News & World Report. Paul helps homeowners navigate home renovations and ADU projects with trusted professionals.

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