Why the Questions You Ask Before Hiring Matter as Much as the Work Itself

Hiring a contractor is one of the most consequential decisions a homeowner makes. A skilled, trustworthy professional can transform your home; an unlicensed or underinsured one can leave you with unfinished work, code violations, or financial losses that are difficult to recover from. The good news is that most risks are manageable — if you know what to ask and verify before anyone picks up a tool.

This checklist walks you through the essential questions to cover during contractor vetting. It applies whether you're planning a kitchen remodel, a bathroom gut-job, or a roof replacement. Use it as a structured guide for every conversation and document-review step before you sign anything.

Before you begin, it's also worth knowing which projects in your home will require a permit. Learn when permits and inspections are required so you can factor that into every contractor conversation from the start.

Required

State Contractor Licensing Board Website

Used to verify a contractor's license status, check for disciplinary actions, and confirm the license covers the work type.

Required

Certificate of Insurance (COI)

A document from the contractor's insurer confirming active general liability and workers' compensation coverage.

Required

Written Itemized Bid Template

A standardized form for requesting comparable, line-item bids from multiple contractors.

Required

Written Contract

A signed agreement covering project scope, timeline, payment schedule, change order process, and warranty terms.

Optional

Project Photo Log

A dated photo record of work-in-progress used to document milestones and protect both parties if disputes arise.

The Contractor Vetting Checklist

Work through these items methodically — ideally before your first in-depth conversation with any candidate. Many homeowners skip the early steps out of eagerness to get a project started, but investing 30 to 60 minutes in verification upfront can save significant time, money, and stress later.

Credentials and Legal Standing

Verify the contractor holds a current, valid license for the type of work in your state or municipality. Must
Confirm the business is registered and in good standing with your state's contractor licensing board. Must
Ask for proof of general liability insurance and verify it is current — request a certificate directly from their insurer. Must
Ask whether they carry workers' compensation insurance covering all employees and subcontractors on your property. Must
Check for any complaints, disciplinary actions, or license suspensions through your state licensing board's public records. Must

Experience and References

Ask how many years the contractor has been in business under the current company name. Must
Request at least three recent references for projects similar in scope to yours, and actually call them. Must
Ask references specifically about whether the project finished on time, on budget, and whether they would hire the contractor again. Must
Ask to see photos of completed projects that are comparable in size and type to your planned renovation. Should
Search the contractor's business name online for reviews, complaints, or unresolved disputes on public platforms. Should

Project Logistics and Crew

Ask who will physically perform the work — the contractor directly, employees, or subcontractors. Must
If subcontractors will be used, ask whether they are also licensed and insured for their trade. Must
Clarify whether the contractor will be on-site daily or assign a project manager, and get that person's contact information. Should
Ask how they handle unexpected discoveries mid-project — such as hidden water damage or code issues — and how change orders are priced. Must
Confirm who is responsible for pulling required permits, and verify that permits will be obtained before work begins. Must

Bids, Payment, and Contract Terms

Obtain written, itemized bids from at least three contractors before making a decision. Must
Ensure each bid breaks down labor, materials, and other costs separately so comparisons are meaningful. Must
Avoid any contractor who demands full payment upfront — a reasonable deposit is normal, but the bulk should be tied to project milestones. Must
Ensure the signed contract specifies a detailed payment schedule, project timeline, and exactly what is included in scope. Must
Ask whether the contractor offers any warranty on their workmanship, and get any warranty terms in writing. Should
Confirm the contract includes a process for dispute resolution and what happens if either party needs to exit the agreement. Should
Do not make a final payment until the completed work has passed all required inspections and you are fully satisfied. Must

Never Skip the Insurance Verification Step

If a contractor working on your property is uninsured and causes damage — or if a worker is injured on your property — you may be held financially responsible. Do not accept verbal assurances of coverage. Request a certificate of insurance directly from the contractor's insurance provider and confirm it is current before any work begins.

If budget is a concern throughout this process, understanding where costs can balloon unexpectedly is just as important as vetting your contractor. See which renovation projects routinely exceed budget so you can plan more accurately from the start.

What to Do After You've Chosen a Contractor

Once you've vetted candidates and selected someone you trust, the work isn't over. Before any tools arrive, confirm every agreement in writing. A contract should cover the full scope of work, payment schedule, materials to be used, project timeline, how change orders will be handled, and cleanup responsibilities. If a contractor resists putting things in writing, treat that as a serious warning sign.

Stay engaged throughout the project without micromanaging. Schedule regular check-ins, document the work with photos at key milestones, and never make a final payment until the job is complete to your satisfaction and all required inspections have passed.

For projects involving any electrical component — even something that seems minor — understand what the law requires around licensed electrical work before assuming your contractor can handle it without a specialist.

This article is for general informational and educational purposes only. Licensing requirements, permit rules, and contractor regulations vary by state and locality. Always verify requirements with your local government authority and consult a qualified professional for guidance specific to your project and jurisdiction.