Questions to ask a contractor

Short answer

Ask a contractor about licenses, insurance, experience with your type of project, permits, timeline, payment schedule, subcontractors, change orders, warranties, communication, and what is included in writing. Good questions help you spot the difference between a professional who runs a real business and someone who gives vague answers.

You do not need to sound like an expert. In fact, simple questions are often the best ones. A solid licensed general contractor should be able to explain their process in plain English, show proof of credentials, and give you a written scope of work before you commit.

What it means for you

A big remodel, addition, structural repair, or new build can cost tens of thousands of dollars, sometimes much more. The questions you ask up front can protect your budget, your schedule, and your home. They can also help you avoid common problems like unclear pricing, missing permits, surprise change orders, and poor communication once work starts.

Many homeowners focus only on the bid number. Price matters, but it is not the whole picture. Two contractors can give very different prices because one included permits, cleanup, and finish details while the other did not. One may carry proper insurance and use experienced crews. Another may not. Asking the right questions helps you compare apples to apples.

This matters even more for families planning a major project for the first time, and for homeowners who prefer simple communication or support in a language they are most comfortable with. You deserve a contractor who answers questions clearly, respects your household, and puts the important terms in writing.

• Are you licensed for this type of work in my state or city?
• Are you bonded and insured? Can you show proof of general liability and workers' compensation coverage?
• Have you done projects like mine before? How many in the last few years?
• Who will pull permits, schedule inspections, and make sure the work follows local code?
• Who will supervise the job site each day?
• Do you use employees, subcontractors, or both?
• What exactly is included in this price, and what is not included?
• How do you handle change orders if we need to change the scope later?
• What payment schedule do you use, and what milestones trigger payments?
• How will we communicate during the job, and how often will I get updates?
• What happens if materials are delayed or hidden damage is discovered?
• What warranty do you provide for workmanship, and what product warranties apply?

How it works in practice

The best contractor conversations usually happen in three steps. First, you ask screening questions before scheduling a full estimate. Second, you ask project-specific questions during the site visit. Third, you compare written proposals line by line before choosing anyone.

At the screening stage, keep it simple. Confirm that the contractor is licensed, bonded and insured, and ask whether they regularly handle your kind of project. A kitchen update is different from a second-story addition. Foundation work is different from a cosmetic remodel. If your project involves structure, load-bearing walls, framing, or major systems, ask directly whether they have recent experience with similar jobs.

During the site visit, focus on scope. Ask what they think the job includes, what permits may be needed, what parts of the home may be affected, and what conditions could change the price. A careful contractor may point out things you had not considered, like electrical service upgrades, temporary weather protection, asbestos or lead concerns in older homes, drainage issues, or access problems for materials and equipment.

When proposals come back, read them slowly. Look for a written scope of work, materials or allowance details, permit responsibility, estimated start window, estimated project duration, payment schedule, cleanup terms, warranty language, and the process for changes. If one proposal is much cheaper, ask why. Sometimes it is a better value. Sometimes key items are missing.

• Ask for the contractor's full business name and license number.
• Verify the license with the proper state or local licensing authority.
• Ask for certificates of insurance and confirm coverage is current.
• Ask for recent references from projects similar to yours.
• Request a written proposal, not just a verbal estimate.
• Read the payment terms carefully before paying any deposit.
• Make sure change orders must be approved in writing.
• Do not assume permits are included unless the contract says so.

What to ask about cost

You should absolutely ask about budget, but ask in a way that gets useful answers. Start with broad numbers, then ask what drives the price up or down. A contractor cannot honestly promise an exact final cost early on, especially for complex work, but they should be able to explain likely cost ranges, assumptions, and exclusions.

Ask whether the proposal is a rough estimate, a more detailed estimate, or a fixed-price contract for a clearly defined scope. Then ask what could increase the cost later. Hidden water damage, outdated wiring, soil conditions, code upgrades, structural surprises, material price changes, owner-requested changes, and permit requirements are common examples.

These are broad U.S. estimates, not quotes or guarantees. Real costs vary by location, design, size, structural complexity, materials, permits, labor market, and site conditions. The point is not to memorize a number. The point is to ask what is included and what could change.

You should also ask about deposits and progress payments. In many projects, payments are tied to milestones, not just dates on a calendar. Be cautious if a contractor wants a very large upfront payment before materials are ordered or permits are in place. Payment rules can vary by state, so review the contract carefully and consider getting professional advice if you are unsure.

What to watch for

Some red flags show up before work begins. Others show up in the paperwork. If a contractor avoids basic questions, refuses to provide a license number, cannot show proof of insurance, pushes you to sign immediately, or gives a vague one-page bid with few details, slow down. That does not automatically mean they are dishonest, but it does mean you need more clarity before moving forward.

Watch for unclear responsibility around permits. A homeowner can sometimes be told to pull permits directly, but you should understand exactly why, what that means, and whether it is normal for your area and project. For major work, ask who is taking responsibility for code compliance, inspections, and corrections if something fails inspection.

Also watch how the contractor communicates. Do they answer the actual question? Do they explain tradeoffs? Do they put things in writing? A contractor who is organized before the contract is signed is more likely to be organized once the job begins. Clear communication matters just as much as technical skill.

• No license number or a license that does not match the business name
• No proof of insurance or expired coverage
• Pressure to pay cash or pay a large amount upfront
• Vague scope with little detail about materials or labor
• No written change-order process
• Unwillingness to discuss permits or inspections
• Refusal to provide recent references
• Promises that sound too certain about price or timeline

Get matched

If you are planning a new build, addition, structural project, or major renovation, Mainstay Builders can help you get matched with licensed, bonded and insured general contractors in the U.S. Our service is free to homeowners. We are not the contractor, and we do not tell you who to hire. We help connect you with qualified pros so you can compare options and make your own decision.

You can use the question list on this page when you speak with any contractor you are considering. If you want a simpler starting point, we can help you connect with contractors who fit the type of work you need. Many homeowners appreciate having a short list instead of starting from scratch.

If language comfort matters in your home, that matters too. Clear communication can reduce mistakes and stress on a major project. No matter who you talk to, always ask for details in writing, verify credentials before signing, and choose the licensed pro you trust most for the work.