Before hiring a home-improvement contractor, verify the business independently, check the required license and insurance, call recent references, and get the full scope and payment schedule in writing. Don't sign because a salesperson says the price expires today, and don't send a large payment until you understand what it covers.

A single warning sign doesn't establish fraud. Several together - especially pressure, missing credentials, vague paperwork, and unusual payment demands - are a reason to pause. Licensing, deposit, cancellation, and contract requirements vary by state and sometimes by city, so confirm the rules for your project instead of relying on a universal percentage or checklist.

Home Improvement Scam Checklist: 25 Red Flags

Use this list before signing a roofing, plumbing, HVAC, electrical, paving, painting, kitchen, bathroom, or general remodeling contract.

• 1. Unsolicited door-to-door contact: A contractor appears after a storm or says the crew is already working nearby. That isn't proof of a scam, but you should initiate independent checks before continuing.
• 2. An unsupported damage claim: Someone says your roof, siding, chimney, or foundation is unsafe without providing a clear inspection or photographs.
• 3. Pressure to decide immediately: Phrases such as "sign now," "we have one opening," or "the price ends today" are meant to stop you from comparing bids.
• 4. Resistance to additional estimates: A contractor shouldn't object to your comparing the scope, materials, and price with other written estimates.
• 5. A missing or unverifiable license: The contractor can't provide a license number, or the number doesn't appear in the relevant state or local database where a license is required.
• 6. A mismatch between the license and the business: The license belongs to a different company, individual, trade, or address than the one named on your estimate.
• 7. No reliable proof of insurance: The contractor offers an expired document, refuses to identify the insurer, or says insurance is unnecessary without explaining the local requirements.
• 8. A price far below comparable bids: A low bid may leave out demolition, preparation, permits, disposal, labor, or necessary materials.
• 9. An estimate with no itemized scope: You can't tell how much labor, material, equipment, or cleanup is included.
• 10. No target start or completion date: The contractor won't put a schedule or delay process in writing.
• 11. Unspecified materials: The estimate says "new roof," "quality cabinets," or "premium paint" without identifying quantities, brands, grades, dimensions, or installation standards.
• 12. Unclear permit responsibility: Nobody can explain which permits and inspections are required or who will obtain and pay for them.
• 13. No written contract: Verbal promises are difficult to prove when the price, scope, or schedule changes.
• 14. Blank spaces or unreadable terms: Don't sign a contract with blank lines, missing attachments, or language you don't understand.
• 15. Verbal change orders only: The contractor wants to add work or raise the price without a dated written change order.
• 16. A large or unexplained deposit: A deposit isn't automatically fraudulent, but the amount should make sense for documented materials, and the contract should explain how it will be applied. Deposit rules differ by jurisdiction.
• 17. Untraceable payment demands: Be cautious if the only options are cash, wire transfer, gift cards, cryptocurrency, or payment to an unrelated person.
• 18. A check payable to an individual: The payee should match the contracting business, or the contract should clearly explain the person's relationship to the business.
• 19. The final payment is due before completion: The FTC advises waiting to make the final payment until the work is done and you're satisfied with it.
• 20. Pressure to use home-secured financing: A contractor wants you to sign a home equity loan, lien, or other finance document before you've spoken directly with the lender.
• 21. Unclear insurance or claim paperwork: You're asked to sign away rights, authorize broad insurance actions, or make statements about damage you haven't verified.
• 22. No recent references or relevant portfolio: The contractor can't provide customers or examples for a project similar to yours.
• 23. Reviews look manufactured: Reviews use identical wording, provide no project details, appear in a sudden cluster, or come only from one source. Reviews are leads for questions, not proof of licensing or quality.
• 24. Unknown or constantly changing subcontractors: The contractor won't identify who will enter your home or perform electrical, plumbing, roofing, or structural work.
• 25. The crew stops communicating or the work quickly fails: Missed start dates, disappearing after a deposit, unfinished work, leaks, peeling paint, unsafe wiring, or other early defects require prompt documentation.

The Terms That Control the Job

For most U.S. projects, start with three checks: local requirements, the written contract, and the payment or financing agreement. A contractor's sales pitch doesn't replace any of them.

State and local licensing rules

The United States has no single contractor-license system. Some states license general contractors and trades, while other requirements are handled by counties or cities. A license may also cover only particular types of work.

Search for the official state licensing board or local building department yourself. Confirm that:

• The license is active on the date you check.
• The legal business name, license holder, and contract information are consistent.
• The license covers the type of work being proposed.
• The board lists disciplinary actions, complaints, or required bonds, if that information is available.
• The contractor is authorized to work in your city or county when local registration is required.

Requirements differ by state. For example, the California Contractors State License Board says contractor advertisements must include a state license number and describes California-specific bond and insurance requirements. Don't apply California rules automatically to a project elsewhere.

Business registration isn't the same as a contractor license. A company can be registered and still lack the required trade credential, permit, insurance, or experience.

The written contract

The contract should turn sales promises into terms you can check. Look for:

• The contractor's legal name, address, phone number, and license number
• A detailed description of the work
• Materials, quantities, brands, grades, colors, and installation methods
• Who supplies equipment and removes debris
• Permit and inspection responsibilities
• Start date, estimated completion date, and how delays will be handled
• Total price, taxes, deposit, payment milestones, and balance due
• The process for additions, substitutions, and price changes
• Warranty terms and who handles warranty claims
• Subcontractor responsibilities
• Cleanup, final inspection, and acceptance terms
• Cancellation notices required by the contract or local law

Don't rely on a promise to "write it up later." If an item matters to you, put it in the contract before work begins.

Document every change before the extra work starts. A useful change order identifies the new work, the added or reduced cost, the effect on the schedule, and the signatures or approvals required.

If the discussion takes place in a language other than English, ask your state consumer agency whether you may be entitled to a translated contract. Depending on where you live and what you're buying, that right may apply. An informal oral translation doesn't necessarily cover every term.

Deposits and Payments: Safer Practices

There isn't one deposit percentage that makes a contractor legitimate in every U.S. state. A claim that "30% is always the legal maximum" or that "50% is always a scam" can be misleading. Check your state and local rules, then compare the payment schedule with the work being performed.

A safer arrangement generally has these features:

1. The deposit is stated in the written contract.
2. The contractor explains what the deposit covers.
3. Payments are tied to visible milestones, such as delivery of specified materials or completion of an inspection.
4. You use a traceable payment method.
5. Some amount remains due after the work is complete and you've inspected it.
6. Price changes require written approval.

A credit card may provide a dispute process, but it doesn't guarantee a refund. Ask the card issuer about its deadline and evidence requirements before assuming a charge can be reversed. For an ACH payment, debit card, wire, or check, contact the bank or provider immediately if the contractor stops responding. Recovery options depend on the payment method and how quickly you act.

Avoid paying with gift cards or cryptocurrency. Don't make a check payable to a person unless the contract clearly identifies that person as the business's authorized payee.

The Home Improvement Loan Scam

Some scams involve more than unfinished work. The FTC warns that a contractor may arrange a loan that places debt against your home.

Treat financing paperwork as a separate financial transaction:

• Contact the lender through a phone number or website you find independently.
• Ask who the lender is and whether the debt is secured by your home.
• Review the annual percentage rate, total amount financed, monthly payment, fees, and repayment term.
• Find out whether the contractor receives a referral fee or controls the loan application.
• Ask what happens to the loan if the project is canceled or the contractor fails to finish.
• Don't sign blank forms or allow anyone to misstate your income, property condition, insurance claim, or project cost.

If financing is available only if you sign immediately, stop and contact the lender directly. If a loan was opened without your informed consent, notify the lender promptly and preserve the application and disclosure documents.

Does the Three-Day Cooling-Off Rule Apply?

The FTC's Cooling-Off Rule can give consumers three business days to cancel certain sales made at their home or at temporary locations, generally for purchases of $25 or more. The rule has exceptions and doesn't automatically cover every remodeling, repair, or emergency-service contract.

Read the FTC's Cooling-Off Rule guidance before assuming you can cancel. If the rule covers the sale:

• The seller should provide written notice of the cancellation right and cancellation forms.
• Follow the stated instructions and deadline.
• Keep a copy of the form or letter.
• Send the notice in a way that creates proof of mailing and delivery, such as certified mail.
• Don't wait until the third day to find out whether the transaction qualifies.

A state law or the contract may provide additional cancellation rights. The federal rule isn't a substitute for reviewing the agreement or checking with your state consumer protection agency.

How to Check a Contractor Before You Sign

1. Define the project

Write down what you want repaired or installed. Take dated photographs before work begins, especially after a storm. For insurance-related repairs, keep copies of inspection reports and claim communications.

2. Get comparable written estimates

Ask at least two or three contractors to price the same scope. Compare preparation, removal, materials, labor, permits, cleanup, warranties, and exclusions - not just the total.

The FTC recommends getting multiple estimates and checking reviews. A review site can suggest questions to ask, but it can't replace license and insurance verification.

3. Verify the license independently

Use the official state or local website, not a link or phone number supplied only by the salesperson. Save a screenshot or printout showing the license status, name, classification, and expiration date.

If no license is required for that particular work, ask the local building department what registration, permit, or inspection requirements apply.

4. Confirm insurance

Request current proof of general liability coverage and ask whether workers' compensation applies to the contractor's employees or subcontractors. Call the insurer to confirm that the policy is active and covers the business named in your contract.

Insurance doesn't guarantee good workmanship, but it can affect how injuries or property damage are handled. An emailed certificate isn't independently verified until the insurer confirms it.

5. Check references and the business identity

Call recent customers and ask:

• Did the contractor start and finish when promised?
• Did the final price match the contract?
• Were changes documented?
• Was the property left clean?
• Would the customer hire the contractor again?

Confirm that the business name, address, phone number, license holder, and payment recipient are consistent. Search the company and owner names with terms such as "complaint," "lawsuit," or "license discipline." Search results are incomplete, though, and an absence of complaints proves nothing.

6. Review the contract without pressure

Take the contract home. Read every page, attachment, warranty, financing form, and insurance authorization. Ask questions in writing and save the responses.

A contractor who won't leave paperwork behind or insists that a discount disappears before you can read it is giving you a reason to walk away.

Extra Checks by Project Type

Roofing and storm repairs

Storm damage creates an opening for urgent sales pitches. Don't let a door-knocker decide that you need a full replacement.

• Photograph the condition before temporary repairs, when safe.
• Ask for a written inspection with photographs and a defined repair scope.
• Get an independent estimate rather than relying on the first person who arrives.
• Verify the contractor's roofing license and insurance requirements in your jurisdiction.
• Keep control of your insurance claim and read any authorization or assignment document before signing.
• Confirm permit and inspection requirements.
• Don't pay the entire amount before materials and work are delivered.

Emergency tarping or water mitigation may need to happen quickly. Separate that immediate work from a later replacement contract and document both scopes.

Plumbing, HVAC, and electrical work

A genuine emergency can still be used to sell an unnecessary replacement. Ask what failed, what testing was performed, and whether a repair is available. Require an itemized estimate for parts, labor, diagnostic fees, permits, and follow-up service.

For electrical panels, gas appliances, HVAC systems, and major plumbing changes, confirm who will pull permits and who will perform required inspections. Don't allow unverified workers to perform specialized work simply because they arrived with the salesperson.

Kitchen and bathroom remodeling

Low bids often exclude demolition, surface preparation, waterproofing, electrical work, plumbing relocation, cabinet hardware, appliance installation, or debris removal. Make each item explicit.

Ask who is responsible for measuring, ordering, storing, and inspecting cabinets, countertops, tile, and fixtures. Require written approval for substitutions and confirm how a delayed product affects the schedule.

Driveways, painting, siding, and windows

Be cautious about "leftover materials," a crew working nearby, or a price available only if you pay immediately. Ask for product specifications, surface preparation, thickness or coverage, installation method, cleanup, and warranty terms.

Poor preparation can cause peeling paint, failed sealant, uneven siding, or premature pavement cracking even when the finished surface initially looks acceptable.

What Does Not Prove a Contractor Is Legitimate?

These facts may be useful, but none is enough by itself:

• A professional-looking truck or website: Scammers can copy branding and testimonials.
• A business registration: Registration doesn't establish trade licensing or insurance.
• A high online rating: Reviews can be incomplete, manipulated, or unrelated to the work you need.
• An insurance claim or adjuster visit: Insurance involvement doesn't guarantee the contractor's identity or workmanship.
• A low price: The estimate may omit essential work or change later.
• A license number in an advertisement: Confirm that the number is active, belongs to the named business, and covers the work.
• A neighbor's recommendation: Personal referrals help, but you should still check credentials and contract terms.

The useful combination is independent verification, comparable written bids, detailed paperwork, controlled payments, and an inspection before final payment.

What to Do If the Contractor Takes Your Money or Does Poor Work

Act quickly, but preserve evidence before starting a dispute.

1. Protect people and property. Stop unsafe electrical, gas, structural, or water-related work and contact a qualified professional or local authority if there is an immediate hazard.
2. Stop additional payments. Don't send more money because the contractor promises that another payment will unlock materials or restart the crew.
3. Save the evidence. Keep the contract, estimates, change orders, invoices, receipts, canceled checks, card statements, texts, emails, call logs, photographs, videos, license records, and advertisements.
4. Contact the payment provider. Ask your credit card issuer, bank, debit card provider, or wire service what dispute, recall, or fraud options and deadlines apply. Give the payment method and exact date.
5. Notify the lender separately. If financing or a home-secured loan is involved, contact the lender directly and ask for the application, disclosures, disbursement record, and current balance.
6. Send a written demand. Describe the unfinished or defective work, identify the contract term involved, state what you want, and give a reasonable response deadline. Follow phone conversations with a letter sent by certified mail so you can document delivery.
7. Report the conduct. Contact your state attorney general's consumer office, contractor licensing board, local building department, and the FTC through the reporting route in its consumer guidance. Report suspected theft, forgery, threats, or dangerous conduct to local law enforcement.
8. Consider local dispute options. Small-claims limits, construction liens, bond claims, mediation, and lawsuit procedures vary by state. Check your state court or licensing agency before choosing a remedy.

Don't authorize a new crew to destroy or remove disputed work before photographing it and checking whether your insurer or a local expert needs to inspect it. If the defect creates an immediate safety problem, make the area safe first and document what was changed.

Quick Questions

Is every door-to-door contractor a scam?

No. A door-to-door approach is a reason to slow down, not automatic proof of fraud. Ask the contractor to leave written information, then verify the business independently and obtain competing estimates.

Is a 30% deposit always safe?

No. Deposit requirements vary by state, project, and contract. Focus on the written payment schedule, what the deposit covers, whether payments are traceable, and whether a meaningful balance remains after completion.

Can I cancel a home-improvement contract within three days?

Sometimes. The federal Cooling-Off Rule covers certain sales made at home or temporary locations, but exceptions apply. Review the FTC guidance and your state's requirements rather than assuming every repair contract qualifies.

Are online reviews enough?

No. Read multiple detailed reviews, ask for recent references, and verify the license, insurance, identity, and contract separately.

What if the contractor says hidden damage requires more money?

Ask for photographs, a written explanation, and a written change order before authorizing additional work. For insurance repairs, confirm the issue with your insurer or an independent professional. Don't approve a major increase based only on a verbal demand.

Before the first estimate visit, create one project folder for the contract, license and insurance checks, estimates, photos, payment records, and messages. Use it to compare bids and document each decision before money or work changes hands.