Most contractor problems are predictable. The warning signs are usually there in the first conversation — they just get overlooked by homeowners who are eager to get the project started or relieved to finally find someone available. Here are the red flags that deserve a second look before you sign anything.

“By the time a homeowner calls me for help with a contractor dispute, the red flags were almost always visible before the contract was signed. A contractor who pushes for a big cash deposit, can’t produce a licence number, and pressures you to decide quickly is telling you exactly who they are. Most people just don’t want to hear it at the time.”

— Brian Cho, construction law paralegal and homeowner advocacy consultant with 11 years of experience in residential construction disputes in many regions

Red Flags Before You Hire

They can’t produce a licence number. A licensed contractor has a licence number. If they can’t give you one immediately, or give you a number you can’t verify, assume they’re unlicensed.

They don’t carry insurance — or won’t prove it. A certificate of insurance should be available within 24 hours of asking. Resistance or delay is a signal.

They suggest you pull your own permits. This is never in your interest and often means they’re not licensed to do the work they’re quoting. Walk away.

The quote is dramatically lower than everyone else’s. A price that’s 30–40% below market typically means something has been excluded, materials will be cut, or the margin will be recovered through change orders. The lowest quote is rarely the best deal.

They pressure you to decide immediately. Legitimate contractors don’t need same-day signatures. High-pressure closing tactics are designed to prevent you from doing due diligence. Take the time you need.

They ask for a large cash deposit upfront. A deposit of 10–25% is normal. A demand for 50%+ in cash is a serious warning sign. Cash-only payments remove your paper trail and your recourse. See: Is It Normal to Pay a Deposit to a Contractor?

They have no verifiable business history. A contractor who has been operating under the same name for several years has a track record you can research. A brand-new company, or one that seems to have changed names recently, warrants caution.

They can’t provide recent, comparable references. If a contractor can’t give you three references from similar projects in the last 12 months, ask why. See: Questions to Ask a General Contractor for References and Past Work

Red Flags in the Quote or Contract

A quote with no detail. A single number on a piece of paper is not a quote. If there’s no scope of work, no material specifications, no exclusions list, and no payment schedule, you have no protection. See: What Should a Contractor Quote Include?

No written change order process. If the contract doesn’t address how scope changes will be handled, you’re vulnerable to verbal agreements that become expensive disputes.

Vague payment terms. Payment schedules should be tied to specific milestones, not to the contractor’s request for funds whenever they need cash.

No warranty language. A contractor who won’t commit to a written workmanship warranty in the contract is telling you something about how they expect the work to hold up. See: Questions to Ask a Contractor About Warranties on Their Work

Red Flags Once Work Has Started

They disappear between visits. A contractor managing your project should be reachable and communicative. If calls and messages go unanswered for days at a time, that’s a management problem.

The crew changes constantly. Some crew variation is normal. A project where you never see the same faces twice may indicate the contractor is struggling to keep trades committed to your job.

They ask for more money ahead of schedule. Payments should follow the schedule in your contract. A contractor who asks for the next payment before the agreed milestone is reached may be using your funds to cover costs on another project.

Problems are minimized rather than addressed. A good contractor acknowledges issues openly and provides solutions. One who dismisses your concerns, explains away defects, or promises to “sort it out later” rarely does.

Trust Your Instincts

If something feels off — a contractor who talks over you, makes you feel foolish for asking questions, or creates urgency where none should exist — pay attention to that feeling. The homeowners who end up in disputes often say, in retrospect, that something bothered them at the start. Being informed, asking the right questions, and listening to your own instincts are all part of making a good hire.

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