What is the most common contractor scam?

The most common scam is the disappearing deposit: a contractor collects a large upfront payment (sometimes 50% or more), does little or no work, then stops returning calls. To avoid this, never pay more than 10–15% as a deposit, and tie all subsequent payments to completed milestones.

How can I tell if a contractor is legitimate?

Verify their license through your state licensing board, confirm their insurance through the insurer directly, check their physical business address (not just a P.O. box), look up their BBB record, and call at least two recent references. Legitimate contractors welcome all of these checks.

What should I do if I've already been scammed by a contractor?

File complaints with your state contractor licensing board, the state attorney general's consumer protection office, and the Better Business Bureau. If they abandoned the project, you may have grounds for a civil lawsuit or small claims court action. Contact your homeowners insurance company — some policies cover contractor fraud. If a permit was pulled, alert the local building department.

How to Spot Contractor Scams Before They Cost You

May 18, 2026 · Tips · 3 min read

Why Contractor Fraud Is So Common

The home improvement industry sees an estimated $17 billion per year in fraud and poor workmanship. Unlike most consumer purchases, home improvement projects involve large upfront payments, work done inside your home over extended periods, and outcomes that are difficult to evaluate until long after the contractor has been paid. This creates the perfect conditions for bad actors.

The Classic Scam Patterns

The Disappearing Deposit

A contractor collects a large deposit — sometimes 30–50% of the total contract — then does little or no work before becoming unreachable. Warning signs: excessive upfront payment demands, vague start dates, no written contract, or pressure to "lock in pricing today."

The Low-Ball Bait and Switch

A contractor bids unusually low to win the job, then manufactures "unexpected discoveries" — rotted framing, mold, structural issues — that require expensive change orders. The final cost ends up 30–80% higher than the original bid. Warning signs: bid significantly below all others, no site visit before bidding, vague scope of work.

The Storm Chaser

After a major hail storm, wind event, or other disaster, contractors appear door-to-door pressuring homeowners to sign contracts immediately before their insurance adjuster arrives. They often use high-pressure tactics and may sign homeowners up for work at inflated prices. Warning signs: unsolicited door-to-door approach after a weather event, pressure to sign before your adjuster's inspection, offers to "handle everything" with your insurance company.

The License and Insurance Fabricator

A contractor claims to be licensed and insured but provides false license numbers or expired certificates. Warning signs: reluctance to provide a license number, COIs with blurry or unclear policy numbers, certificates that list only the contractor as insured (not you as an additional insured).

The Permit Avoider

A contractor offers to "save you time and money" by skipping permits. This leaves you with unpermitted work that may fail inspection at resale, void your homeowners insurance for incidents related to the work, and require expensive tear-out and redo. Warning signs: "I do this all the time, we don't need a permit," or complaints about permit fees that should be your responsibility.

Pre-Hire Red Flags Checklist

Contractor approaches you unsolicited (door-to-door)
No physical business address — only a cell phone or P.O. box
Cannot produce a license number immediately
Refuses to provide a Certificate of Insurance
Demands more than 15% upfront
Bid is more than 20% below all other quotes
Pushes you to sign the same day you meet
Offers to skip permits to "save time"
No written contract, or contract that is vague about scope and materials
Online reviews that are all five stars with no detail, posted in clusters

How to Protect Yourself

Always verify license and insurance independently — don't rely on documents the contractor provides without calling the issuing authority
Pay by check or credit card — never cash, never wire transfer
Use milestone-based payments tied to inspected, completed work
Keep all communications in writing (text or email)
Don't sign anything under pressure — a legitimate contractor will always give you time to review

Start your search with contractors who have verified licenses and real reviews. Browse our contractor directory by city to find professionals with documented track records.

Frequently Asked Questions

What is the most common contractor scam?: The most common scam is the disappearing deposit: a contractor collects a large upfront payment (sometimes 50% or more), does little or no work, then stops returning calls. To avoid this, never pay more than 10–15% as a deposit, and tie all subsequent payments to completed milestones.
How can I tell if a contractor is legitimate?: Verify their license through your state licensing board, confirm their insurance through the insurer directly, check their physical business address (not just a P.O. box), look up their BBB record, and call at least two recent references. Legitimate contractors welcome all of these checks.
What should I do if I've already been scammed by a contractor?: File complaints with your state contractor licensing board, the state attorney general's consumer protection office, and the Better Business Bureau. If they abandoned the project, you may have grounds for a civil lawsuit or small claims court action. Contact your homeowners insurance company — some policies cover contractor fraud. If a permit was pulled, alert the local building department.