10 Things to Check before Hiring a Construction Contractor
Construction Contractor

10 Things to Check before Hiring a Construction Contractor

B Banibrata Das | Sep 17, 2026

Pre-hiring verification is a must when you are choosing a construction company. Whether you are getting a referral or hiring a construction contractor online, verifying licenses and insurance is a must. Look at the disciplinary history, ask to see the subcontractor's license number, and check compliance with local registration requirements.  And don’t forget to recheck the reputation and reviews on several platforms.

Use this checklist with vital 10 things for everyone who wants to thoroughly vet a contractor before signing anything. Spending less than an hour on these checks can save you from much bigger headaches down the road.

Key Takeaways

  • Verify the contractor’s license, insurance, bond, and legal history before hiring.

  • Get a clear written scope, estimate, timeline, and contract before work begins.

  • Compare at least three bids and don’t choose a contractor based on price alone.

  • Check references, subcontractors, permits, and red flags to avoid costly problems later.

Scope of the Project

  • Be clear on what you want to have done. Before beginning any communication, make sure you get a full-page scope of work. From demolition and materials to completion and cleanup, define the level of finish you want

  • Ask what is included in the price. A low quote can look attractive until you discover that important work or materials were left out.

  • Owner-supplied vs. contractor supplied: Clarify this from the beginning.

  • Discuss changes before work starts. If you change your mind later, ask how the contractor handles extra work and how much it will cost.

  • Get the scope in writing. A detailed project description gives both you and the contractor something clear to refer back to if there is a disagreement.

  1. Licensing and Registration

  • Check whether the contractor is properly licensed. Requirements vary by location, so check with your local or state/provincial authority.

  • Make sure the license belongs to the actual contractor you are hiring. Don't assume a company is licensed just because it says so on its website or business card.

  • Check out the business registration of the building contractor.  Make sure they have proper prior approval of the scale of work being performed.

  • Re-check the license status on the state licensing board’s website. This is a wonderful hack you can apply from your site. You can also get an idea of the correct license type you need from those websites or access different resources.

  • Check whether the license is current. An expired, suspended, or restricted license can be a warning sign.

  • Ask for the license number and verify it yourself. This simple step can help you avoid hiring someone who is not legally qualified to perform the work you need.

Verification of Insurance and Bond

  • Ask for proof of insurance before work begins. At a minimum, find out whether the contractor carries the coverage required for your type of project.

  • Check what the insurance actually covers. General liability insurance, workers' compensation, and other coverage can protect you from different risks.

  • Call the insurance company directly to verify the construction company’s insurance coverage. Don't rely only on a certificate handed to you.

  • Check the bond amount. Make sure the bond is viable to provide meaningful protection if the contractor fails or does any damage.

  • Compare the bond with the project value.

  • Ask if they’re bonded for projects of your size and what the bond covers (non‑completion, contract breach.

  • Where possible, verify the policy with the insurance provider and make sure it is still active.

  • Ask whether the contractor is bonded. A bond can provide another layer of protection if the contractor fails to meet certain contractual or legal obligations.

Permit and Local Code Compliance

  • Ask which permits your project needs. Major renovations, structural changes, electrical work, plumbing, and similar projects may require permits.

  • Find out who is responsible for getting the permits. Don't assume the contractor will handle them unless this is clearly agreed upon.

  • Check that the work will follow local building codes. Cutting corners to save money can create safety issues and problems when you sell the property later.

  • Verify the permits yourself when possible. Your local building department can usually tell you whether the required permits have been applied for or issued.

  • Verify the contractor’s permit history with your local building department if possible.

References and Recent Similar Projects

  • Ask the building contractor for 3–5 references from jobs like yours completed in the last 12–18 months, and actually call them.

  • Request to visit the work-in-progress or completed site. Compare them with your expectations.

  • Look for projects similar to yours. A contractor who does excellent small repairs may not have the experience needed for a major renovation or new construction project.

Timeline, Crew and Daily Point of Contact

  • Before hiring the construction company, demand a written estimate of completion for the work.

  • When the project will start and finish. You should have a realistic timeline instead of a vague promise that the work will be done "soon."

  • Find out who will actually do the work. Ask whether the contractor employs their own staff, hires subcontractors (electricians, plumbers, drywall crews, and others), or uses a mix of both.

  • Know who you will contact each day. Having one clear point of contact makes it much easier to ask questions and deal with problems.

  • Ask what could delay the project. Weather, material shortages, permit issues, and unexpected structural problems can affect the schedule, so discuss how these situations will be handled.

Read the blog on how to find trusted home service providers near in Ireland.

Disciplinary History and Credentials of Subcontractors

  • Don't check only the main contractor. Remodeling: Don't Check Only the Main Contractor. Do not check only the main contractor. If subcontractors will do the electrical, plumbing, roofing, your job, or other specialties, check their licenses as well.

  • Do not check only the main contractor. If other people will be doing the electrical, plumbing, roofing, your job, or other specialties, check their licenses as well.

  • Ask who the major subcontractors will be. You should know which companies or professionals will be working inside or around your home.

  • Check licenses and certifications: specialized work requires specific qualifications that are location-dependent

  • Check for complaints or disciplinary actions – repeated and serious violations or complaints and license issues should raise a red flag for you.

Written Agreement, Contract and Legal Protection

  • Never rely on a handshake for a major construction project. Put the important details in a written contract before work begins.

  • Make sure the contract covers the basics. It should clearly state the work, price, payment schedule, materials, timeline, warranties, and how changes will be handled.

  • Read the fine print. Pay close attention to cancellation terms, dispute resolution, delays, and who pays for what if something goes wrong or costs more than estimated.

  • Never sign on the spot, and have a professional review any large or complex contract. That is our advice on contracts.

Any Pending Lawsuit and Judgment

  • Check whether there are serious legal disputes involving the contractor. A lawsuit by itself doesn't automatically mean the contractor is unreliable, but the reason for it matters.

  • Look for patterns rather than one isolated complaint. Multiple disputes involving unpaid workers, defective work, or contract issues deserve your attention.

  • Check for judgments when public records are available. An unpaid judgment can sometimes point to financial or business problems.

  • Give the contractor a chance to explain serious findings. Don't rely on a single online review or database entry without understanding the full situation.

  • Check out the civil court database website and have a look into their database. Multiple active or recent judgments, especially from facility owners like you, can be a serious warning sign.

 Red Flags

  • Make sure that the contractor cannot require a sum of money to start with ( 30 to 35%). A reasonable part of the full amount of money to be paid is a deposit, but an unusually high one should make you think.

  • Beware the pressure. If you are advised to sign the papers because you will miss the price if you do not do this today.

  • Be cautious about unusually low estimates. A quote that is far below the others may mean important costs have been left out.

  • Cannot provide proof of the required license or insurance, or \unwilling to share references from customers with similar projects.

  • Can’t share the written estimation of project scope or change order process

  • Subcontractor shows up at the last minute.

  • Trust your instincts: what you have noticed at the last minute when things don't add up. Missing paperwork, vague answers, poor communication, refusal to provide references, or reluctance to use a written contract are all reasons to slow down.

Final Thoughts

Finding a reliable construction contractor can be a time-consuming task. You may find a contractor that looks good on paper, but their contract often hides some of the most important information. That is why verifying the contractor’s license, insurance coverage, references, permits, subcontractors, legal history, and conditions of the deal is necessary before signing an agreement.

However, you don't need to spend days on an endless search. Instead, you may use this ten-point list as a guide to cross-check the most crucial details in less than an hour. After double-checking the contractor against this list, you can be fairly confident that they will not scam or mislead you into a financially damaging situation.

At BuzyList, we have a list of several vetted construction companies, with verified details. Log in today and start scrolling the right sources.

Frequently Asked Questions

What should I check before hiring a construction contractor? +
Check the contractor’s license, insurance, bond, references, permits, past projects, subcontractors, contract terms, and legal history. In addition, be wary of low cost, pressure to sign a contract, and large advance payments.
How can I verify that the construction contractor is licensed and insured? +
Ask for a copy of the contractor’s license and confirm by contacting the local or state licensing board. Check the insurance by asking for a certificate of insurance and contacting the insurance company, if possible.
What are the red flags when hiring a contractor? +
Lack of documentation of insurance and license, no references, a contract that does not specify the scope of work, the contractor’s avoidance of written contracts, low bid, insistence on a large deposit, and pressure to sign without a detailed contract.
How to choose a construction contractor? +
First, look at the licenses and insurance of a chosen contractor, check references, and ask for a detailed estimate. In addition, it is a good idea to inquire about the contractor's experience in similar projects, ask who will perform the work, and research reviews and legal history. Avoid choosing a contractor based solely on the price quoted.
How to hire a contractor? +
Hire a contractor after comparing several bidders. Ask for estimates from multiple contractors and request references, licenses, and insurance. Once a contractor is selected, ensure that the contract scope of work, cost, payment schedule, project completion time, materials, and change order process are established and put in writing.
Why do I need a written estimate? +
A written estimate provides a detailed scope of work and cost of the upcoming project. It helps to compare different bidders’ prices and avoid misunderstandings and additional expenses during the project. A contractor’s estimate should state the compensation, materials, project scope, and time needed to complete the project.
How many bids should I get when hiring a construction contractor? +
For most construction projects, getting at least three bids is a good starting point. This gives you enough information to compare pricing, project scope, timelines, and what each contractor includes. Don't automatically choose the lowest bid—an unusually cheap estimate may leave out important work or materials.