How Home Improvement Contractors Get Verified: Every Check That Matters

Contractor verification confirms — through government databases — that a contractor holds the required licenses, carries active insurance, and has no unresolved disciplinary actions before any work begins. The FTC received 81,925 home improvement fraud reports in 2024, with a median per-victim loss of $1,800 (BBB, 2024). Nearly all were preventable with verification steps that take under 30 minutes.

Why Do Most Contractor Marketplaces Skip Verification?

Most online contractor referral platforms operate as directories, not gatekeepers. They collect contractor profiles, charge for leads, and leave verification entirely to the homeowner. The business model creates no incentive to screen out non-compliant contractors — in fact, excluding them reduces inventory and revenue.

The gap between what "marketplace" implies and what it delivers is where most contractor fraud originates. A homeowner searching a popular referral site sees a contractor with dozens of reviews and an appealing profile. They assume that the platform has done some form of vetting. In most cases, it has not.

The cost of that assumption is significant. According to FTC data, total reported losses to fraud across all categories reached $12.5 billion in 2024 — a figure the FTC described as a "big jump" — with home improvement consistently among the highest-volume complaint categories year over year. State attorneys general in Illinois, Michigan, and Minnesota have each issued specific public guidance in the past two years warning homeowners that contractor fraud remains one of the most common forms of consumer harm in their states.

The absence of verification is not a minor oversight. It is the mechanism through which fraudulent operators enter the marketplace in the first place. A contractor whose license was revoked for prior fraud, whose insurance lapsed six months ago, or whose LLC was administratively dissolved last year can list on most platforms without any of that information being surfaced.

What Does "Programmatic Verification" Actually Mean?

Programmatic verification means that credential checks are executed automatically against authoritative government data sources — not manually assembled from documents the contractor provides. The distinction matters because contractor-provided documents can be falsified. A Certificate of Insurance printed yesterday can show a policy that lapsed three months ago. A license number typed into an application can belong to a different contractor. Documents that look official are not the same as data pulled directly from a licensing board's live database.

A programmatic system connects to the actual state licensing boards, insurance verification networks, and business registration databases and queries them directly. The contractor's license number is checked against the issuing authority's records in real time. The result is binary: the license is active and in good standing, or it is not. There is no document to forge.

This architecture also enables ongoing monitoring rather than one-time onboarding checks. A contractor who was compliant when they joined a platform may not remain compliant. Programmatic systems can flag status changes — a license suspension, an insurance cancellation — and remove the contractor from active referral until the issue is resolved.

For homeowners, the practical implication is that "verified" is a meaningful designation only when it describes programmatic credential confirmation, not just a profile that has been reviewed by a human who read documents the contractor submitted.

What Are the 5 Checks That Separate Verified from Unverified Contractors?

State License Status

License requirements for home improvement contractors vary significantly across the Midwest — a fact that fraudulent operators exploit deliberately. Michigan requires residential builders and maintenance and alteration contractors to hold a state license issued by the Department of Licensing and Regulatory Affairs (LARA); any residential or mixed-use project valued at $600 or more requires a licensed contractor. Wisconsin requires a state-issued Dwelling Contractor certification through the Department of Safety and Professional Services (DSPS). Ohio licenses specific commercial trades (electrical, HVAC, plumbing, hydronics, refrigeration) through the Ohio Construction Industry Licensing Board.

Illinois, Missouri, Indiana, and Iowa regulate general contracting at the local level. Illinois does require a statewide license for roofing contractors specifically, administered by the Illinois Department of Financial and Professional Regulation (IDFPR) — a requirement adopted because roofing fraud is among the state's most common contractor complaints. Missouri, Indiana, and Iowa have no statewide general contractor license, which means licensing compliance must be verified against the specific municipality or county where the work will occur.

What programmatic license verification checks:

Whether the license number exists in the issuing state's database
Whether the license status is active (not suspended, revoked, or expired)
Whether the license covers the specific scope of work being performed
Whether there are pending or resolved disciplinary actions on the record

A contractor operating in a state that requires their license and not holding one is not a paperwork technicality. It is a legal status that prevents them from pulling permits, eliminates recourse through the licensing board if problems arise, and is itself a fraud indicator.

Insurance Coverage (COI Verification)

Every contractor working on a Midwest home should carry at minimum two forms of insurance: general liability and workers' compensation. A Certificate of Insurance (COI) is the standard document used to demonstrate coverage. Receiving a COI is not the same as having verified coverage.

General liability insurance covers property damage and third-party bodily injury caused by the contractor's work. The minimum acceptable coverage for residential home improvement work is $1 million per occurrence and $2 million aggregate. Lower limits create real exposure on larger projects where a single incident — a fire caused by a trade error, a structural failure from improper framing — can exceed those numbers.

Workers' compensation insurance covers the contractor's employees and subcontractors for medical costs and lost wages if they are injured on your property. In most Midwest states, if a contractor lacks workers' comp coverage and a worker is injured on your property, you — the homeowner — can be held personally liable. Your homeowner's insurance policy typically excludes this scenario. The exposure is not theoretical; it is the basis for claims filed against homeowners every year.

To understand what each field on a COI actually means and what to confirm with the insurer, see our guide on how to read a certificate of insurance.

Programmatic COI verification goes beyond document receipt. It connects to insurance verification databases to confirm the policy is active, has not been cancelled, and covers the relevant lines of work. An outdated or forged certificate looks identical to a valid one on paper; the only way to confirm is to query the source.

Business Registration

A legitimate home improvement contractor operates through a registered business entity — an LLC, corporation, or sole proprietor filing — that is on record with their state's Secretary of State. Business registration is not just a formality. It establishes a legal accountability structure: a registered address for legal service, a registered agent for official notices, and a business history that can be independently verified.

What business registration checks confirm:

The business is actively registered and in good standing (not dissolved, administratively revoked, or suspended)
The business name matches what the contractor represents themselves as
The registered address is a verifiable physical location, not a PO box or mail drop
The business has been operating long enough to have an established record

Midwest Secretary of State portals where this can be verified directly:

Missouri: sos.mo.gov/BusinessEntity
Illinois: Illinois Secretary of State Business Search via ilsos.gov
Ohio: Ohio Secretary of State business search via ohiosos.gov
Indiana: Indiana Secretary of State INBiz portal via inbiz.in.gov
Michigan: Michigan LARA business entity search via lara.michigan.gov
Wisconsin: Wisconsin DFI business entity search via wdfi.org

A contractor who operates under a business name that is not registered with the state, or whose registered business has been administratively dissolved, has no formal accountability structure. Their business address cannot be served legally, their agent cannot receive official notices, and there is no registered entity against which a judgment can be collected.

Complaint and Disciplinary History

State licensing boards maintain public records of complaints filed against licensed contractors, investigations conducted, and disciplinary actions imposed — including license suspensions, revocations, civil penalties, and consent orders. These records are the institutional memory of the licensing system. A contractor who has a prior license suspension for abandoning contracts, defrauding homeowners, or performing unlicensed work is not invisible; that history lives in the board's database.

What a disciplinary history check surfaces:

Prior license suspensions or revocations and the stated reasons
Active investigations that have not yet reached a conclusion
Consent orders or conditions imposed on a current license
Patterns of complaint — multiple similar complaints across multiple licensing periods

A single unresolved complaint from a dissatisfied customer is not the same as a pattern of disciplinary action. The distinction matters. Programmatic verification looks for the substantive indicators: formal actions taken by the board, not unverified consumer complaints on review sites. A contractor whose license was suspended for abandoning a project after taking a deposit, reinstated after paying a fine, and who is now operating again is a contractor with a documented history you should know about before hiring them.

For specific guidance on the other behavioral signals that predict project failure, see our post on contractor red flags.

Worker's Compensation Coverage

Workers' compensation deserves its own category beyond the general insurance check because the exposure to homeowners is direct and frequently misunderstood. When a contractor's employee is injured on your property and the contractor does not carry workers' comp, the injured worker's attorney will look to every available source of recovery — including you.

The mechanics vary by state, but the core exposure is consistent across the Midwest: homeowner's insurance policies contain exclusions for employees and contractors engaged in work on the property. The standard HO-3 policy covers accidental injuries to guests, not occupational injuries to workers. A roofer who falls from a ladder on your property and suffers a serious injury is not in the same legal category as a dinner guest who trips on your front steps.

Workers' comp verification is not satisfied by the general liability section of a COI. It appears on a separate line of the certificate and requires its own confirmation. The questions to ask the insurer:

Is the workers' compensation policy currently active?
Does it cover all employees, or are subcontractors excluded?
What is the policy period and when does it next renew?

A contractor who uses subcontractors and cannot confirm that their workers' comp covers those subcontractors — or that each sub carries their own policy — has left a gap in coverage. That gap becomes your exposure if a subcontractor is injured on your property.

What Happens When a Contractor Fails One of These Checks?

When a contractor fails any one of the five verification checks, the appropriate response is proportional to what the failure reveals — and whether the contractor is transparent about it.

An insurance lapse discovered during verification requires immediate investigation. An expired certificate may reflect a renewal that processed late and is now current; it may also reflect a contractor who has not maintained coverage for six months and is presenting an outdated document. The only way to know is to ask directly and require documentation of the current active policy. A contractor who responds with defensiveness rather than documentation is telling you something important.

A license status problem is more serious. A license that is currently suspended, revoked, or expired is not an administrative oversight — it means the contractor is not legally authorized to perform the work. In states that require licensure for the specific scope of work being discussed (Michigan for residential construction, Wisconsin for dwelling contractors, Illinois for roofing), proceeding with an unlicensed contractor exposes the homeowner to liability for unpermitted work, voids the protections the licensing system provides, and eliminates recourse through the board.

Disciplinary history requires judgment. A single compliance issue from eight years ago, resolved, is different from a pattern of recent complaints or a reinstatement following a fraud-related suspension. The relevant question is not whether any record exists — it is whether the record shows a pattern of behavior that predicts risk on your project.

Programmatic verification results in one of three outcomes for each check: pass, fail, or needs review. A contractor who fails verification at the license or workers' comp level is removed from active referral until the issue is resolved and re-confirmed. This is not punitive — it is the minimum standard the marketplace needs to enforce to mean anything.

How Do You Run These Checks Yourself? (Step-by-Step)

You do not need access to a verification platform to run the five checks described above. Each check draws from public government records and can be completed in under 30 minutes for a single contractor.

Step 1: Collect the contractor's credentials in writing.

Before you start the check, ask the contractor for their full legal business name, state license number (if their state requires one for the work being performed), and a Certificate of Insurance. Get everything in writing — email is sufficient. A contractor who declines to provide their license number or stalls on providing a COI is telling you something before the check even begins.

Step 2: Check license status through the state licensing board.

Use the lookup tool for the state where the work will be performed:

State	License lookup resource
Michigan	michigan.gov/licenselookup (LARA — covers residential builders and M&A contractors)
Wisconsin	dsps.wi.gov License Lookup (DSPS — dwelling contractors and trades)
Ohio	elicense4.com.ohio.gov (OCILB — electrical, HVAC, plumbing, hydronics)
Illinois	idfpr.illinois.gov (IDFPR — roofing contractors)
Missouri	mopro.mo.gov (DPR — trade licenses; general contracting is local)
Indiana	mylicense.in.gov/everification (PLA — plumbing; GC is local)

Search by license number and confirm: the license is active, the name on the license matches the contractor, and there are no open disciplinary actions.

Step 3: Verify business registration.

Go to the Secretary of State's business search for the state where the contractor is registered. Search by the legal business name. Confirm: the business status is active (not dissolved or revoked), the registered address is current, and the business type matches what the contractor represents.

Step 4: Call the insurance carrier directly.

Take the insurer's name from the COI and look up their main customer service or agent services number on the insurer's official website — not from any number written on the certificate. Ask: Is policy number [X] active? What are the current coverage limits? Has there been any lapse or cancellation in the last 12 months? This call takes three minutes and is the step most homeowners skip.

Step 5: Confirm workers' comp separately.

Workers' comp appears on a different section of the COI than general liability. Confirm it with the same call, or with a separate call to the workers' comp carrier if it is a different insurer. Ask specifically whether subcontractors are covered, or whether each sub is expected to carry their own policy.

Step 6: Search complaint history.

For states with centralized licensing, the licensing board's lookup tool often shows complaint history alongside license status. For states with local licensing, check the state attorney general's consumer complaint portal and the BBB's business search for the contractor's legal business name.

All Midwest AG complaint portals are compiled in our post on contractor red flags.

What Can Contractor Verification Not Catch?

Verification establishes legal baseline compliance. It does not assess workmanship, project management skill, subcontractor relationships, or communication style — the factors that determine whether a project actually goes well.

Verification cannot detect:

A contractor who passes all credential checks but routinely performs substandard work within the bounds of what the licensing board tracks
A newly licensed contractor with no complaint history because they have not been in business long enough to generate one
An experienced contractor whose skills are strong in one trade but who consistently over-promises scope in adjacent areas
Personal or business financial distress that may lead to project abandonment before it has produced any complaint record
Fraudulent credential presentation that has not yet been caught and flagged by the licensing authority

This is why verification is a necessary condition, not a sufficient one. The appropriate use of verification results is to establish which contractors are legally eligible to work on your project, not to rank them against each other on merit. From a verified pool, you still need to check references — speaking to at least three prior clients with projects similar in scope and value — read the contract carefully, and structure payments as milestones tied to completion rather than a front-loaded sum.

The questions to ask before signing a contract cover the non-credential dimensions of contractor evaluation: how they handle change orders, who their subcontractors are, how they communicate during a project, and how they handle problems when they arise.

Verification is also a point-in-time check. A contractor whose license is active and insurance is current on the day you hire them may not maintain that status through the duration of a six-month project. For larger projects, requesting an updated COI at the contract signing date and confirming license status before final payment are reasonable additional steps.

Frequently Asked Questions

What does it mean for a contractor to be verified?

A verified contractor has been checked against government databases to confirm their license is active and in good standing, their insurance is current (general liability and workers' comp), their business is registered with the state, and their complaint history with licensing boards has been reviewed. Verification is not the same as a recommendation — it establishes a baseline of legal compliance.

How do I verify a contractor's license in the Midwest?

It depends on the state. Michigan and Wisconsin maintain centralized state license databases. Ohio licenses commercial trades through the Ohio Construction Industry Licensing Board at elicense4.com.ohio.gov. Illinois licenses roofing contractors through IDFPR at idfpr.illinois.gov. Missouri, Indiana, and Iowa regulate general contracting at the local level — contact your city or county building department for the applicable lookup tool.

What is a Certificate of Insurance and how do I verify it?

A Certificate of Insurance (COI) is a one-page summary document showing a contractor's insurance policy details. Receiving a COI is not the same as having verified coverage — certificates can be outdated or falsified. To verify, call the insurance agent listed on the certificate using a phone number you look up independently on the insurer's official website, and ask them to confirm the policy is active, the limits, and whether there have been any recent lapses. For a complete walkthrough of the ACORD 25 form and what each field means, see our guide to reading a certificate of insurance.

Can a contractor fail verification and still be a good contractor?

Yes, in limited circumstances — an administrative lapse (an insurance renewal that processed late, a license renewal delayed by paperwork) is different from a substantive violation. The distinction matters: a contractor who self-discloses an administrative issue and documents its resolution is behaving transparently. A contractor who denies the issue exists, or who has a pattern of violations and reinstatements, is a different situation entirely.

What contractor checks can programmatic verification NOT catch?

Programmatic verification checks legal compliance records — it cannot assess workmanship quality, communication style, subcontractor relationships, or the subjective fit between a homeowner's project and a contractor's capabilities. It also cannot catch fraudulent credentials that have not yet been flagged in the relevant database, or predict whether a currently compliant contractor will remain compliant throughout your project.

Do I need to verify a contractor if they come from a verified marketplace?

You should understand what verification the marketplace has performed and apply independent judgment to the result. A marketplace that verifies license status and insurance at the time of contractor onboarding does not guarantee that coverage has remained current since then. For major projects, confirming that the license and insurance certificate are still valid at the time you sign a contract is a reasonable additional step.

What happens if a contractor lies about their credentials?

Misrepresenting a license or insurance status to obtain a contract is fraud in every Midwest state. You can file complaints with your state attorney general's consumer protection division, the relevant licensing board, and the FTC at ReportFraud.ftc.gov. If the contractor collected a deposit and disappeared, you may also have a small claims or civil court action. Document everything: the misrepresentation itself, what you paid, and what work was or was not performed.

Start With a Verified Pool

The five checks above take time to run for a single contractor. For a project that warrants three competitive bids, that is three independent sets of checks. Above Board Pros runs programmatic verification — license status, insurance confirmation, business registration, and disciplinary history — on every contractor in the network before they receive a single lead. The pool you start with has already passed the checks that most homeowners skip.

You still read the contract. You still call the references. You still structure payments as milestones, not a lump sum at the front. But you do all of that from a filtered starting point rather than starting cold.

Find licensed, bonded, and insured contractors in your area at aboveboardpros.com.