How to Choose a Concrete Contractor in Michigan: Licence, Insurance and References

Here is the checking you should do before you sign anything. One note first: this is general guidance, requirements change over time, and you should verify current licensing and insurance status yourself through the state and your municipality rather than taking anyone's word for it, including ours.

Licensing: what to check and where

Michigan licenses residential building and maintenance and alteration work at the state level through its licensing and regulatory affairs department, with trade classifications covering the different types of work. Whether a specific job requires a licensed contractor depends on the scope, on whether the work is residential or commercial, and on the value and nature of the project. On top of that, individual cities, townships and counties across mid-Michigan run their own permitting and, in some cases, their own registration.

Rather than rely on a general description, do two things.

Ask the contractor for the exact legal name their licence and their business are held under, and verify it directly against the state's public licence lookup. Names on trucks and names on paperwork are not always the same, and the verification is only worth doing against the legal entity you will be contracting with.

Then call your local building department, describe the work, and ask what permits and inspections apply and whether the contractor needs to be registered locally. That is a five minute phone call and it settles the question for your specific project in your specific municipality, which no article can do.

One practical signal: a contractor who pulls permits routinely and talks about inspections without being prompted is used to being looked at. That is a good sign in itself.

Insurance: two policies, verified at the source

This is where homeowners are most exposed and where verification is easiest.

General liability covers damage the contractor causes to your property. Driving a loaded truck across a septic field, cracking a foundation wall during demolition, damaging a neighbour's drive, all of it lands here.

Workers compensation covers injuries to the contractor's employees. This is the one people skip and it matters most. Concrete work involves heavy equipment, saws and manual handling. If an uninsured worker is hurt on your property, the question of who is responsible becomes an unpleasant one.

Commercial vehicle coverage is worth asking about too, since trucks and trailers will be on and around your property.

Verify all of it properly. Do not accept a photocopied certificate handed over at the kitchen table. Ask for a certificate of insurance sent to you directly by the contractor's insurance agent, and ask to be listed as a certificate holder so you are notified if the policy lapses. Check the effective and expiry dates cover your whole project, including any delay. Check the policy actually names the entity that will do your work. A certificate is easy to produce and easy to falsify. A call to the agent named on it is not.

References that are actually worth something

Any contractor can produce three happy customers from last month. Nothing has been tested yet.

Ask instead for jobs that are three to five years old, in this climate, and ideally the same type of work. A stamped patio that has been through four Michigan winters tells you what a stamped patio poured last August cannot. Ask if you can drive past and look. Most people will say yes.

When you speak to a reference, skip whether they were happy. Ask these instead. Did the finished job match the written scope? Were there change orders, and how were they handled? Did the crew show up when they said they would, and what happened when weather moved the schedule? How was the site left at the end of each day? And the one that separates firms: did you ever have to call them back afterwards, and what happened when you did?

Then look at published reviews as a pattern rather than as individual stories. What matters is consistency over years and how the business responds when something goes wrong. Our own reviews are on the reviews page, and more about who we are is on the about page.

Reading the proposal

The proposal tells you more about a contractor than the conversation does. A serious one names the slab thickness, the reinforcement type and how it will be supported, the base material and compacted depth, the drainage and finished grade, the joint layout, the mix specification, the curing method and the return to service dates. A thin one names a square footage and a number.

Those items are the actual job, and we published what belongs in one on our concrete flatwork page and, for decorative work, on the stamped concrete page. If a bid does not describe them, you cannot compare it against a bid that does, and choosing on the bottom line between two documents describing different slabs is not a comparison at all.

Warranty: what a credible one says

Be suspicious of a warranty that promises no cracking. Concrete cracks. It shrinks as it cures and it moves with temperature, which is exactly why control joints exist. A contractor promising crack-free concrete is either inexperienced or is writing something they intend to argue their way out of later.

A credible warranty says what it covers, for how long, what voids it, and who honours it. It distinguishes between cracking within the jointed panels that is expected and cracking that indicates a workmanship or base failure. It states owner responsibilities such as drainage maintenance, sealing and de-icer use. And it is written down. A verbal warranty from a business that may not exist in five years is worth exactly what it costs.

Ask how long the business has traded under its current name and entity. That is not a hostile question, and the answer tells you who is likely to be around to honour the paperwork.

Payment terms

Reasonable structures vary, but the shape is consistent: a modest deposit, progress payments tied to real milestones, and a final payment after the work is complete and you have walked it. Be cautious about a large cash payment up front, about a price that drops sharply if you decide today, and about anyone unwilling to put the payment schedule in the contract.

Michigan, like most states, has construction lien law that can affect a property owner if subcontractors or suppliers go unpaid. It is worth understanding how it applies to your project. That is a question for a professional rather than a contractor's blog, and it is a fair thing to raise before signing.

Red flags

• Door to door solicitation with leftover material from another job, and a price that expires today.
• No written contract, or a contract that describes only area and price.
• Reluctance to have an insurance certificate sent from the agent.
• A licence or insurance document in a name that does not match the business you are contracting with.
• Large cash deposit demanded up front.
• No local address, no permanent phone number, out of state plates and no history in the area.
• Pressure to skip permits, or dismissiveness about inspections.
• A promise that the concrete will never crack.
• Refusal to provide the concrete delivery ticket.

Green flags

• They walk the site and ask about drainage, soil and what the surface will carry before quoting.
• The proposal specifies base, reinforcement, jointing and mix.
• They raise permits and inspections without prompting.
• They give a return to service schedule adjusted for the season rather than a standard one.
• They tell you when a cheaper or different approach is the better answer for your situation.
• They hand over maintenance guidance with the finished work.

Questions to ask before you choose a concrete contractor

Take these to every bidder. What legal entity will I be contracting with, and what is its licence status? Can your agent send me a certificate of insurance including workers compensation, with me as certificate holder? What permits and inspections apply here? Can I have three references on jobs three or more years old, of this type? What is the slab thickness, reinforcement, base depth and mix? What does the warranty cover, and what voids it? What is the payment schedule?

Any contractor worth hiring will answer all seven without irritation. If you would like ours in writing, reach us through the contact page, or read the common questions we get on the FAQ page. We are based in Frankenmuth and work across mid-Michigan.

Frequently asked questions

Does a concrete contractor need a licence in Michigan?

It depends on the scope of work and whether it is residential or commercial, and requirements are set at the state level with additional local permitting and registration in many municipalities. Rather than rely on a general answer, ask the contractor for the legal entity name, verify it against the state's public licence lookup, and call your local building department about your specific project.

How do I verify a contractor's insurance?

Ask for a certificate of insurance to be sent to you directly by their insurance agent rather than handed to you as a photocopy, and ask to be listed as a certificate holder so you are notified if a policy lapses. Confirm both general liability and workers compensation, check the dates cover your entire project, and check the named entity matches the one on your contract.

How many quotes should I get for concrete work?

Three is a reasonable number, and the value is only there if all three describe the same slab. Normalise them first for thickness, reinforcement, base depth, jointing, mix and what is included. Once every proposal describes the same work, the remaining difference is scheduling, crew and overhead, which is a fair basis for a decision.

Is a warranty against cracking a good sign?

No. Concrete shrinks as it cures and moves with temperature, and control joints exist specifically to steer that cracking to planned locations. A promise of no cracking is not achievable. A credible warranty distinguishes expected cracking from a workmanship or base failure, states its exclusions and owner responsibilities, and is in writing.

Should I be worried about a contractor who knocks on my door?

Be careful. Door to door offers, particularly ones citing leftover material from a nearby job and a price that expires today, are a long standing pattern in this trade. It does not make every such contractor dishonest, but it does mean every normal check matters more: verify the legal entity, verify insurance through the agent, get it in writing, and never pay a large cash deposit up front.