How to Avoid Contractor Fraud: A Step-by-Step Guide for Homeowners

Avoiding contractor fraud comes down to a handful of concrete steps done before any money changes hands. The FTC reported $5.8 billion in total fraud losses in 2021, with home improvement consistently among the top complaint categories. The homeowners who avoid fraud aren't just lucky — they followed a process. This guide covers that process, step by step.

Why does verifying a license before paying anything matter so much?

A license verification is the single most important step in contractor due diligence, and it needs to happen before any money changes hands — not after. A license number tells you whether the contractor is legally authorized to work in your state, whether their license is current, and whether any complaints or disciplinary actions have been filed against them. Fraudulent contractors are counting on the fact that most homeowners skip this step.

Every state with a licensing requirement maintains a public online database. You can search by the contractor's name or license number and see their current status. Ask every contractor for their license number before you request a quote — their response alone tells you something. A legitimate contractor provides it without hesitation. Someone who hedges, claims they don't need one, or gives you a number that doesn't match their name in the database is someone you should not hire.

CheckLicensed.comdoes this lookup for you across all 50 states and flags status issues — expired, suspended, or revoked — in plain English so you don't have to navigate confusing state websites.

How many quotes should you get before hiring a contractor?

Get at least three written quotes for any project over $1,000. This isn't just about price — it's about calibration. Three quotes give you a sense of what the work actually costs, which makes it immediately obvious when a bid is suspiciously low (a common setup for the low-bid-then-escalate scam) or suspiciously high. Written quotes also force the contractor to specify exactly what is included, which protects you if disputes arise later.

When comparing quotes, make sure you're comparing the same scope of work. A quote that excludes materials, permits, or cleanup is not comparable to one that includes them. Ask each contractor to break down labor versus materials, and confirm what happens if the job runs over budget.

• Three quotes minimum for any project over $1,000.
• Get everything in writing — verbal quotes are not binding.
• Be suspicious of bids that are 30% or more below the others.
• Ask what's explicitly excluded from each quote.

How much should you pay upfront and when should payments happen?

Industry standard for upfront deposits is 10–15% of the total project cost, with an absolute ceiling of 30%. Any contractor asking for more than one-third of the total cost before work begins is a significant red flag. Structure the remaining payments around project milestones: materials delivery, completion of rough-in work, passing inspections, and final walkthrough. Never pay the full balance until you are satisfied with the finished product.

California law caps contractor deposits at $1,000 or 10% of the total contract price, whichever is less. Other states have similar protections. Even where there's no legal cap, the practical rule is the same: pay as little as possible upfront and retain meaningful leverage through final payment.

If a contractor tells you they need a large upfront payment to “buy materials,” offer to purchase the materials directly yourself from the supplier and have them delivered to the job site. A legitimate contractor will accommodate this. A scammer will push back.

What should a written contractor contract include to protect you?

A written contract is your primary legal protection if anything goes wrong. Never start work based on a verbal agreement alone. A solid contract should include: a detailed description of all work to be performed, a list of materials with specifications, the project start and estimated completion date, a payment schedule tied to milestones, a clause requiring written approval for any change orders, the contractor's license number and insurance information, and a process for dispute resolution.

Pay special attention to the change order process. Unscrupulous contractors use verbal “scope changes” mid-project to justify billing far above the original quote. Your contract should state explicitly that no additional work or charges will be authorized without a signed written change order. This one clause prevents more disputes than almost anything else.

• Require: Detailed scope of work in plain language.
• Require: Material specifications (brand, model, grade).
• Require: Milestone-based payment schedule.
• Require: Written change order process for any additions.
• Require: Contractor's license number printed on the contract.
• Require: Proof of general liability and workers' comp insurance.

Why do permits protect homeowners, and how do you confirm they were pulled?

Building permits are not just bureaucratic paperwork. They trigger inspections by your local building department, which means an independent third party verifies that the work meets code. Without permits, no one is checking that your new electrical panel is wired correctly, your structural beam is sized properly, or your plumbing doesn't leak behind the walls. Unpermitted work also creates problems when you sell — it must often be disclosed, and buyers may require it to be remediated.

Confirm that your contractor plans to pull all required permits before work begins. Ask for the permit numbers once they're issued, and call your local building department to verify them. A contractor who resists pulling permits is either cutting corners, operating without a license, or both.

Should you pay a contractor with cash or a credit card?

Always pay with a credit card when possible. Credit cards give you chargeback rights: if a contractor takes your money and disappears, or does materially deficient work, you can dispute the charge with your card issuer and potentially recover the payment. Cash gives you nothing. A check is better than cash because it creates a paper trail, but it doesn't offer the same dispute protection as a credit card.

A contractor who insists on cash only is a contractor who does not want a paper trail. That is not the kind of contractor you want working on your home.

How do you check a contractor's complaint history before hiring?

Three places to check before you hire: your state's licensing board database, the Better Business Bureau, and Google Reviews. Your state's licensing board is the most authoritative source — it shows formal complaints, disciplinary actions, license suspensions, and revocations. The BBB shows complaint patterns and how the contractor responded. Google and Yelp reviews give you a sense of the customer experience, though they don't verify licensing status.

A complaint or two over many years isn't necessarily disqualifying — long-tenured contractors work on enough projects that some disputes are inevitable. What matters is the pattern: how many complaints, how serious, and how the contractor responded. Unresolved complaints, multiple complaints for the same issue (abandonment, non-payment to subs, billing disputes), or a license history showing past suspension are serious concerns.

Start your due diligence at CheckLicensed.com. We check state licensing records, flag expired, suspended, or revoked credentials, and surface complaint history — all in one report, for any contractor in any state.