Why Verification Matters Before Any Work Begins

Hiring a contractor is one of the most consequential decisions you'll make as a homeowner or renter managing repairs. A legitimate, skilled contractor can transform your space; an unvetted one can leave you with incomplete work, serious liability, or a home that fails inspection. The stakes are real — and so is the protection that a structured verification process provides.

This checklist is designed to give you a clear, step-by-step framework for vetting any contractor before a single tool enters your home. Whether you're managing a minor bathroom update or a significant structural repair, the same verification principles apply. For context on which projects warrant a professional versus a careful DIY approach, see our guide on knowing when DIY is smart and when it's risky.

Required

State Licensing Board Website

Verify that a contractor's license is active, correctly categorized, and free of disciplinary actions.

Required

State Attorney General Consumer Complaint Database

Search for complaints or legal actions filed against a contractor or their business.

Required

Insurance Certificate (COI)

Proof of the contractor's active general liability and workers' compensation coverage — request this before work begins.

Required

Written Contract Template

A structured document capturing scope, payment schedule, timeline, materials, and change-order terms.

Required

Local Building Department Contact

Confirm which permits are required for your specific project and jurisdiction before work begins.

Optional

Smartphone Camera or Timestamping App

Document the existing condition of your home before work starts to establish a clear before-and-after record.

The Verification Checklist

Work through these items for every contractor you're seriously considering. Don't skip steps for smaller projects — even a straightforward tile job can become costly if the person doing it isn't properly insured or licensed for your jurisdiction.

Licensing and Legal Standing

Look up the contractor's license number on your state's official licensing board website to confirm it is current and in good standing. Must
Verify that the license type covers the specific trade or scope of your project (e.g., general contractor, electrical, plumbing). Must
Confirm the business name on the license matches what appears on quotes, contracts, and vehicles. Must
Check whether your city or county requires an additional local business license beyond state licensing. Should

Insurance Verification

Request a certificate of general liability insurance and call the issuing insurer to confirm the policy is active. Must
Confirm the contractor carries workers' compensation insurance for all employees working on your property. Must
Ask whether subcontractors are covered under the same policy or carry their own — gaps here can expose you to liability. Must

References and Track Record

Request at least three references from projects completed within the past two years that are similar in scope to yours. Must
Contact each reference directly and ask about timeline adherence, communication quality, and how problems were handled. Must
Search the contractor's name and business with your state's attorney general consumer complaint database. Should
Ask neighbors, local community boards, or trusted family members for personal referrals as an additional signal. Nice to have

Written Contract and Scope of Work

Obtain a written contract that specifies the complete scope of work, materials to be used, start and estimated completion dates. Must
Confirm the payment schedule is clearly defined — a reasonable deposit is typically 10–30% of total cost, with the balance tied to milestones. Must
Ensure the contract includes a change-order clause requiring written approval before any work or cost additions beyond the original scope. Must
Verify the contract specifies who is responsible for obtaining necessary permits and scheduling inspections. Must
Include a warranty or guarantee clause that outlines what is covered and for how long after project completion. Should

Red Flags to Rule Out

Decline any contractor who asks for full payment upfront or demands cash only with no written documentation. Must
Be cautious of unsolicited door-to-door offers, especially following a storm or neighborhood incident — these are a common setup for scams. Must
Walk away from any contractor unwilling to provide proof of license, insurance, or references upon request. Must
Note whether the contractor communicates clearly and promptly during the bidding phase — poor responsiveness now often signals worse communication once work begins. Should

Never Skip the Insurance Verification Step

If a worker without proper insurance is injured on your property, you may be held financially liable — even if you didn't hire them directly. Calling the insurer listed on a certificate to confirm active coverage takes less than five minutes and provides real protection. Don't accept an expired or unverified certificate as sufficient.

Budget awareness matters here too. Before finalizing any contractor agreement, review what expenses often get overlooked — our piece on the hidden costs of home renovation projects breaks down permits, disposal fees, and other line items that can surprise you mid-project.

After You've Chosen a Contractor

Completing this checklist doesn't end your responsibility — it begins an important working relationship. Keep copies of all contracts, permits, and correspondence in one place throughout the project. Take timestamped photos before work begins so you have a documented baseline.

If your project involves changes to your home's systems — electrical, plumbing, or structural elements — confirm with your local municipality whether permits are required. Licensed contractors typically pull permits themselves; be cautious of anyone who suggests skipping that step. Unpermitted work can affect your home insurance and create complications if you ever sell.

Unpermitted Work Can Cost You Later

Work done without required permits can fail home inspections, void homeowner's insurance claims, and create obstacles when you sell. Some jurisdictions require that unpermitted work be removed or brought up to code at the homeowner's expense — not the contractor's. Always confirm permit requirements with your local building department independently, and do not rely solely on the contractor's word.

Staying on top of regular upkeep can reduce how often you need to bring in outside help. Our seasonal home maintenance walkthrough is a practical resource to revisit each quarter and keep small issues from becoming expensive contractor calls.