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What to Ask a Contractor Before Any Major Home Upgrade Begins

Homeowner and contractor reviewing project plans together at a kitchen table before work begins

Key Takeaways

  • Verifying a contractor's license and insurance before signing protects you from significant liability.
  • A written scope of work prevents misunderstandings about what's included in the project price.
  • Knowing who actually performs the work — including subcontractors — matters for accountability.
  • Understanding the payment schedule helps you avoid financing a contractor's cash flow at your expense.
  • Permits are often legally required; confirm who pulls them before any work starts.
20–40 min

Summary

18 items · 20–40 minutes

Why These Questions Matter Before You Sign

Signing a contract without the right information is one of the most common ways home upgrades go sideways. Scope gaps, surprise charges, delayed timelines, and unlicensed workers are preventable problems — but only if you ask about them before work begins, not after.

This checklist is designed to be used during contractor meetings or before you sign any agreement for a significant home improvement project. It's organized by category so you can move through conversations methodically rather than scrambling to remember what to ask in the moment.

For a broader framework on evaluating big commitments before committing funds, see our questions checklist for large purchases. And if you're still in the process of selecting who to hire, our guide on evaluating contractor qualifications covers the vetting stage that comes just before this one.

Credentials and Insurance

Ask for the contractor's license number and verify it with your state's licensing board before proceeding. Must
Request a certificate of general liability insurance and confirm it is current and covers your project type. Must
Ask whether workers' compensation insurance covers all workers on your property. Must
Request references from at least two recent projects similar in scope to yours and follow up on them. Should

Scope of Work

Ask for a written scope of work that itemizes every task, material, and finish included in the quoted price. Must
Ask explicitly what is not included in the quote so there are no assumptions about gray-area items. Must
Ask how change orders are handled — what triggers one, how they're priced, and whether your written approval is required. Must
Clarify who is responsible for material sourcing, delivery logistics, and any lead-time delays. Should

Timeline and Scheduling

Ask for a written project timeline with a start date, key milestones, and an estimated completion date. Must
Ask how many other projects the contractor is running simultaneously during your job. Should
Ask what the protocol is if the project falls behind schedule and how delays will be communicated to you. Should

Payment and Contract Terms

Ask for a written payment schedule tied to project milestones rather than calendar dates. Must
Avoid any arrangement requiring you to pay more than 10–15% upfront before work begins; large deposits are a common warning sign. Must
Ask what the process is for final payment and whether a lien waiver will be provided upon project completion. Should
Ask about warranty terms — what is covered, for how long, and what the process is to make a warranty claim. Should

Permits and Subcontractors

Confirm who is responsible for pulling required permits and confirm that permits will be obtained before work begins. Must
Ask whether any portion of the project will be performed by subcontractors, and if so, request their names and trades. Must
Ask whether subcontractors carry their own insurance and whether the general contractor remains liable for their work. Should

Tools and Documents to Have Ready

Bring these to any contractor meeting so you can verify answers in real time rather than taking everything on faith.

Required

State contractor licensing board website

Verify the contractor's license number, current status, and any disciplinary history.

Required

Certificate of insurance (COI)

Confirm the contractor carries active general liability and workers' compensation coverage.

Required

Written project scope document

Serves as a reference for what's included, what's excluded, and what constitutes a change order.

Required

Signed contract with payment schedule

Ties your payment obligations to completed milestones rather than open-ended timelines.

Optional

Notebook or recording app (with consent)

Capture contractor answers during meetings so verbal commitments can be confirmed in writing later.

Once you've asked these questions and reviewed the contract carefully, the next step is understanding your project's budget in full. Upgrades frequently exceed initial estimates when contingencies aren't built in — our guide on building a realistic project budget walks through how to structure that plan before anyone breaks ground.

Unpermitted Work Can Cost You Later

Work done without required permits may need to be torn out and redone to pass inspection, at your expense. It can also affect your homeowner's insurance coverage and complicate a future home sale. Always confirm that your contractor will obtain all legally required permits before any work begins — and verify that inspections are completed at each required stage.

A Note on Permits and Subcontractors

Two areas homeowners consistently underestimate are permits and subcontractor involvement. Many projects — kitchen remodels, additions, electrical upgrades, HVAC replacements — require permits issued by your local jurisdiction. Skipping permits isn't just a technicality: it can create problems when you sell your home or file an insurance claim. Our article on understanding permit requirements explains which projects typically trigger them and what's at stake.

Subcontractors are equally worth understanding. Many general contractors delegate portions of work — plumbing, electrical, drywall — to specialized subcontractors. That's normal, but it raises questions about who is responsible for quality and liability on those portions. See our guide on working with subcontractors to understand how that relationship affects you as the homeowner.

Never Pay in Full Before Work Is Complete

A payment schedule that requires large sums upfront is one of the most consistent risk factors in contractor disputes. A reasonable deposit may cover material costs, but the bulk of your payments should follow completed, inspectable milestones. If a contractor insists on full or near-full payment before starting, treat that as a serious warning sign.

Verbal Promises Are Not Enforceable

Whatever a contractor says during a sales meeting has limited value unless it appears in the signed contract. If a contractor makes a commitment about timeline, materials, or scope that isn't written down, ask them to add it before you sign. Polite contractors who intend to deliver on their promises will not object to putting those promises in writing.

Home Editorial Team is the collective byline for our editorial team and contributor network. Articles published under this byline or an editorial pen name are researched, written, and reviewed according to our editorial standards for clarity, consistency, and independence before publication.

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