The short answer: Always verify a contractor’s license through your state licensing board, get at least three written quotes, never pay more than 30% upfront, and get everything in writing. These four steps alone would prevent the majority of contractor scams in the US.
If you are reading this, you are probably about to spend a significant amount of money on your home. Maybe it is a new roof, a kitchen remodel, an HVAC replacement, or foundation work. Whatever it is, hiring the wrong contractor can turn a stressful situation into a devastating one.
We have researched hundreds of real homeowner complaints, BBB reports, and federal lawsuits to put together this guide. These are not hypothetical risks. They are patterns that repeat themselves across the country every single day.
The Most Common Contractor Scams
1. Material Downgrades
A homeowner in the Midwest recently discovered that their roofer installed Class 3 shingles instead of the Class 4 impact-resistant shingles specified in the contract. The difference? About $2,000 in materials, plus the homeowner lost eligibility for permanent insurance premium discounts.
How to protect yourself: Always verify materials on-site. Check packaging labels before the crew leaves. Take photos of everything. If the contract says “Owens Corning Duration Class 4,” make sure that is exactly what is on the wrappers.
2. The Disappearing Contractor
This happens more often than you would think. A contractor collects a large deposit, does some demolition or initial work, and then stops showing up. Phone calls go unanswered. They have moved on to the next job (or the next victim).
How to protect yourself: Never pay more than 10-30% as a deposit. Structure payments around completed milestones. A legitimate contractor will not have a problem with this arrangement because they have the cash flow and credit to buy materials.
3. Unlicensed Workers
In one well-documented case, a home services company in Jacksonville accumulated 91 BBB complaints and a federal lawsuit. Despite marketing as a full-service company, investigations revealed patterns of unlicensed subcontractors, aggressive upselling, and a refund policy that required customers to sign non-disclosure agreements.
How to protect yourself: Verify the license yourself. Do not take their word for it. Every state has an online lookup tool.
4. Storm Chasers
After every major storm, door-to-door contractors flood affected neighborhoods. They offer low prices, pressure you to sign immediately, and do substandard work. By the time you discover the problems, they have moved to the next disaster zone.
How to protect yourself: Never hire a contractor who shows up uninvited at your door. Take time to research. If there is genuine storm damage, your insurance company will work with you on timelines.
The 10-Step Vetting Process
Here is exactly what to do before hiring any contractor for any home service:
Step 1: Verify Their License
Go to your state’s contractor licensing board website. Find yours here. Enter their license number and confirm it is active, not expired, and has no unresolved complaints.
Step 2: Check Their Insurance
Ask for a Certificate of Insurance (COI) that shows both general liability and workers’ compensation coverage. Call the insurance company directly to verify the policy is current. An uninsured contractor on your property means you could be liable if someone gets hurt.
Step 3: Read Real Reviews (the Right Way)
- Check Google Reviews, but focus on the negative and 3-star ones. That is where the real patterns show up.
- Search their company name on the Better Business Bureau website.
- Search Reddit for their company name. Homeowners share detailed, unfiltered experiences there.
- Be skeptical of companies with only 5-star reviews. Some businesses pay for fake reviews.
Step 4: Get Three Written Quotes
This is non-negotiable. Three quotes give you a realistic range for your area. If one quote is significantly lower than the others, that is not a deal. That is a warning sign.
Step 5: Demand a Detailed Written Contract
Your contract should include:
- Exact scope of work, described in specific terms
- Specific materials by brand, model, and grade
- Start date and estimated completion date
- Total cost with line-item breakdown
- Payment schedule tied to milestones
- Warranty terms (both labor and materials)
- What happens if hidden damage is found (pre-agreed pricing)
- How change orders will be handled
- Cleanup and disposal responsibilities
Step 6: Check for Liens and Complaints
Search your county court records for any liens or lawsuits involving the contractor. A pattern of mechanic’s liens or small claims cases is a serious red flag.
Step 7: Ask for References (and Actually Call Them)
Ask for 3-5 references from jobs completed in the last year. Call them. Ask specifically: “Was the work completed on time? Were there any surprise costs? Would you hire them again?”
Step 8: Verify the Permit Situation
Most significant home improvement projects require building permits. A contractor who says “we don’t need a permit” or “we can skip the permit to save you money” is putting you at risk. Unpermitted work can create problems when you sell your home, void insurance claims, and potentially be unsafe.
Step 9: Set Up a Payment Schedule
A fair payment structure looks like this:
- 10-30% deposit to start
- Progress payments tied to specific milestones
- 10-15% final payment withheld until work passes inspection and you are satisfied
Step 10: Document Everything
Take photos before, during, and after the project. Save all texts, emails, and receipts. If something goes wrong, documentation is your strongest tool.
Red Flags That Should Stop You Immediately
- They want cash only and will not provide a receipt
- They cannot show you a physical business address
- They pressure you to decide “right now” or lose the price
- They offer a discount for skipping the permit
- They want to start work before signing a contract
- Their quote is verbal only
- They cannot provide their license number on the spot
- Their truck has no business name or logo
What to Do If Things Go Wrong
If you are already in a bad situation with a contractor:
- Document everything. Photos, texts, emails, contracts, receipts.
- Send a written demand. Certified letter describing the problem and what you want them to do about it. This creates a legal paper trail.
- File a complaint with your state’s contractor licensing board, the BBB, and your state Attorney General’s consumer protection division.
- Contact your payment method. If you paid by credit card, you may be able to initiate a chargeback for services not rendered.
- Consult an attorney. For significant amounts, a construction attorney can advise you on your options. Many offer free initial consultations.
Finding Contractors the Smart Way
Instead of waiting for someone to knock on your door, try these approaches:
- Ask neighbors, friends, and coworkers for referrals. Personal experience is the most reliable source.
- Check with your local building supply stores. They often know which contractors have good reputations.
- Contact your local Home Builders Association chapter.
- Use your state licensing board’s directory to find licensed contractors in your area.
Official Resources
- USA.gov Contractor License Lookup
- FTC Tips on Hiring a Contractor
- Better Business Bureau for business reviews and complaints
- CPSC Safety Standards for product recall information