Key Takeaways
- Always verify a contractor's license and insurance before allowing work to begin.
- Get at least three written quotes and compare scope, not just price.
- A signed, detailed contract protects both parties and should exist before any money changes hands.
- Never pay the full project cost upfront — structure payments around completed milestones.
- Permits are often legally required; confirm who is responsible for pulling them.
Summary
18 items · 30–60 minutes
Why Vetting Matters Before Work Begins
Hiring someone to work on your home is one of the more significant decisions you'll make as a homeowner or renter. Unlike purchasing a product you can return, a poorly executed renovation or repair can leave you with structural damage, code violations, or out-of-pocket costs that far exceed the original estimate. The good news: most problems are avoidable with a methodical pre-hire process.
This checklist covers the essential steps to take before any contractor sets foot on your property — from credentials and insurance to contracts and payment terms. It applies whether you're hiring a general contractor for a kitchen remodel or a specialist for a single repair job.
For projects that involve structural changes, new electrical circuits, plumbing into the mains, or additions, permits are frequently required by local building codes. See our guide to renovation permit requirements for a breakdown of when permits are legally necessary and what's at stake if they're skipped.
State Contractor Licensing Board Website
Used to verify a contractor's active license status and check for complaints or disciplinary history.
Certificate of Insurance (COI)
A document provided by the contractor's insurer confirming current general liability and workers' compensation coverage.
Written Scope of Work / Quote Template
A structured document for capturing itemized labor, materials, timeline, and payment terms consistently across multiple bids.
State Attorney General Consumer Protection Portal
Used to search for unresolved complaints or enforcement actions against a contractor's business.
Local Building Permit Office
Used to confirm which permits are required for your project and to verify that applied-for permits are actually on file.
The Contractor Vetting Checklist
Work through each group below before signing anything or handing over a deposit. Items marked must are non-negotiable for protecting yourself legally and financially.
Credentials and Legal Standing
Insurance Verification
Quotes and Scope of Work
References and Track Record
Contract and Payment Terms
Never Skip the Insurance Verification Step
If a worker is injured on your property and the contractor lacks valid workers' compensation insurance, you may be held liable for medical costs and lost wages. General liability insurance protects you if the contractor damages your home or a neighbor's property. Do not accept a contractor's word alone — contact the insurer directly to confirm both policies are current before work begins.
Reading Quotes and References Carefully
Collecting quotes is not just about finding the lowest number — it's about understanding what each contractor is actually proposing. A quote that omits materials, disposal fees, or finish details can balloon dramatically once work starts. When comparing quotes, look for consistency in scope: are all three contractors pricing the same work?
References and reviews deserve the same scrutiny. Ask past clients specifically about whether the project finished on time, whether the final cost matched the estimate, and how disputes were handled. Online reviews can supplement direct references, but they work best when read critically. Our guide to reading reviews explains how to filter signal from noise in online ratings.
Watch for These Common Red Flags
Be cautious of contractors who demand full payment upfront, cannot provide verifiable references, pressure you to decide immediately, offer a price dramatically lower than all other quotes, or suggest skipping permits to save time and money. Unpermitted work can create serious problems when you sell your home or file an insurance claim, and may require expensive remediation to bring into compliance.
Once you're satisfied with a contractor's credentials and references, the final step before work begins is a signed written contract. If you're financing the project, understand that borrowing costs are a real part of your total budget — the same due-diligence mindset that applies here also applies to any credit you take on, as outlined in our pre-application credit checklist.
This article provides general home improvement guidance for informational purposes only. Local licensing requirements, permit rules, and contract law vary by state and municipality. Consult qualified local professionals and verify requirements with your local building authority before beginning any project.