Why the Questions You Ask Before Work Starts Matter Most

Hiring a contractor is one of the highest-stakes decisions a homeowner makes. Once work begins, leverage evaporates quickly — materials are ordered, walls are opened, and replacing an unreliable contractor mid-project is far more costly and disruptive than vetting carefully at the start.

This checklist is designed for the discovery phase: the window between getting a referral or finding a candidate and the moment anyone sets foot on your property with tools. Use it across every contractor you're seriously considering, not just the one you expect to hire.

If you're still deciding whether a project is DIY-appropriate or requires professional help, our guide to DIY realism can help you make that call first.

Licensing and Legal Standing

Ask for the contractor's license number and verify it directly through your state or local licensing board's website. Must
Confirm the license type covers the specific work being done — a general contractor license may not cover specialty trades like electrical or plumbing. Must
Check whether the business is registered and in good standing with your state's business registry. Should
Search your state contractor board or consumer protection agency for any complaints, disciplinary actions, or license suspensions. Must

Insurance and Liability

Request a certificate of insurance showing both general liability coverage and workers' compensation, and verify it's current. Must
Ask that your name be listed as an additional insured on the policy for the duration of the project. Should
Confirm workers' compensation covers all employees and subcontractors who will work on your property — gaps here can expose you to liability. Must

Experience and References

Ask specifically how many projects similar in scope, size, and type to yours the contractor has completed in the past two years. Must
Request at least three references from recent comparable projects and actually contact them with prepared questions. Must
Ask references whether the project finished on time, on budget, and how the contractor handled problems or surprises. Should
If possible, ask to see a completed project in person — photos can be misleading about finish quality. Nice to have

Permits and Inspections

Confirm in writing who is responsible for pulling all required permits before work begins. Must
Ask whether all required inspections will be scheduled and passed before the project is considered complete. Must
Verify that the contractor's scope of work complies with current local building codes — not just past standards. Should

Payment Terms and Contract Details

Insist on a written, signed contract before any work begins or any money changes hands. Must
Negotiate a payment schedule tied to project milestones, not to dates — never pay more than 10–33% upfront. Must
Confirm that the contract includes a clear process for change orders, including how cost and timeline changes will be documented and approved. Must
Ask what warranty the contractor provides on their labor, separate from any manufacturer warranty on materials. Should
Clarify who is responsible for cleanup, debris removal, and restoring the work area after the project ends. Should
Ask how subcontractors are managed and whether you'll be introduced to anyone else who will be working in your home. Nice to have
Request a lien waiver upon final payment to protect yourself from supplier or subcontractor claims against your property. Should

Tools and Resources You'll Need to Verify Contractors

You don't need special equipment to vet a contractor thoroughly — but having the right resources at hand makes the process faster and more thorough.

Required

State Contractor Licensing Board Website

Look up license status, type, expiration date, and any disciplinary history for any contractor you're considering.

Required

Certificate of Insurance (COI)

A document your contractor provides proving current liability and workers' compensation coverage — request it directly from their insurer, not just the contractor.

Required

State Business Registry

Confirm the contractor's business is legally registered and currently in good standing in your state.

Optional

Written Contract Template or Legal Review

A starting point for what a complete home improvement contract should include; consult an attorney if the project scope or cost is significant.

Required

Local Building Department

Verify which permits are required for your specific project type and address before work begins.

One area homeowners often overlook: permit responsibility. In most jurisdictions, the permit for a project must be pulled by the party doing the licensed work — typically the contractor. A contractor who asks you to pull the permit may be unlicensed or trying to shift liability. Learn more in our overview of what building permits actually cover.

Watch Out for Contractors Who Ask You to Pull the Permit

In most states, the licensed contractor performing the work is legally required to pull the permit in their name. If a contractor asks you to pull the permit yourself, that's a significant warning sign — it may mean they're unlicensed, underinsured, or attempting to shift legal and financial liability onto you. Always clarify permit responsibility before signing a contract.

Reading the Contract Before You Sign

A thorough contract isn't a sign of distrust — it's the foundation of a working relationship. It should spell out the full scope of work, materials to be used (with specifications, not just brand names), payment schedule, start and estimated completion dates, and how change orders will be handled.

Pay close attention to what happens if something goes wrong. Does the contract include a dispute-resolution clause? Is there a warranty on labor separate from product warranties? These details matter far more than they seem before work starts.

Never Rely on a Verbal Agreement Alone

Verbal commitments are extremely difficult — often impossible — to enforce if a dispute arises. Every term you've agreed on, including scope, price, timeline, payment schedule, and what happens if something goes wrong, must be captured in a signed written contract. This protects both you and the contractor, and it's a mark of professional practice, not distrust.

Because renovation projects often carry real financial weight, it's worth treating contractor payments with the same deliberateness you'd apply to any major budget commitment. Our budgeting basics hub has practical frameworks for planning large, unplanned expenses.

This article provides general educational information for homeowners and is not legal or financial advice. Requirements for licensing, permits, and contractor regulations vary by state and municipality. Consult a qualified professional for guidance specific to your location and project.