How to Verify a Connecticut Business's License, Registration and Insurance

Verifying credentials is the least glamorous part of hiring and the part that prevents the worst outcomes. It also takes far less time than most people assume. Here is exactly what to check in Connecticut, in what order, and what the answers actually mean.

1. Learn the difference between a license and a registration

Connecticut regulates trades in two distinct ways, and companies sometimes blur them in their marketing.

A license is an occupational credential held by an individual who has met training, apprenticeship and examination requirements. Electrical, plumbing, heating/cooling and several other trades are licensed this way. A license number is tied to a person, and that person may be an owner or an employee.

A registration is a business-level filing. Home improvement contractors — the broad category covering most residential remodeling and exterior work — are expected to hold a home improvement contractor registration and to display that number on contracts and advertising. Registration is not a skill credential; it is an accountability credential. It puts the business on record with the state and connects the homeowner to the state's complaint and guaranty-fund processes.

Both matter. Neither substitutes for the other.

2. Ask for the number in writing before the estimate

Request the credential number by email or text so you have a record. A business that is registered gives you this instantly; it is on their paperwork already. Hesitation, "my guy handles that," or a promise to send it later is a meaningful signal at the earliest and cheapest point in the relationship.

3. Verify it yourself with the state

Connecticut's Department of Consumer Protection maintains a public online lookup for license and registration verification (the eLicense system). Search by name or number and confirm four things:

• The credential exists and is active, not expired or lapsed
• The name matches the business you are actually hiring, not a related-sounding entity
• The credential type matches the work — an electrical license does not cover a roof
• There is no disciplinary action noted

If the business operates as an LLC or corporation, you can also check the Secretary of the State's business registry to confirm the entity is in good standing and see how long it has existed. A company that formed six weeks ago is not automatically bad, but it changes what references you should demand.

4. Get the insurance certificate from the agent

Ask the contractor to have their insurance agency email a certificate of insurance (a COI) with you listed as the certificate holder. This matters because a COI sent from the agency is current by definition, while a PDF from the contractor's phone may be two years stale.

On the certificate, look for:

• General liability — covers damage to your property. Common small-contractor limits are $1M per occurrence / $2M aggregate. For large projects, ask for more.
• Workers' compensation — covers injuries to their crew. If the business has employees and there is no workers' comp, walk away. A sole proprietor working alone may legitimately be exempt; ask directly and get the answer in writing.
• Commercial auto — relevant if vehicles will be on your property or hauling materials.
• Policy dates — confirm the coverage period covers your whole project, not just the week the estimate was written.

5. Check the paper trail on the job itself

Verification does not end at signing.

• Confirm the permit was actually pulled, by the contractor, in their name. Your town's building department can tell you.
• Ask who is doing the licensed portions of the work. If a general contractor is subbing out electrical, you are entitled to know the electrician's license number too.
• Ask for lien waivers as you make progress payments on larger jobs. A supplier or subcontractor who was not paid by your contractor can, in some circumstances, place a mechanic's lien on your property even though you paid in full.

6. Cross-check reputation, carefully

Credentials tell you a business is accountable. Reputation tells you whether it is any good. Read reviews across at least two sources and weight recent, detailed, specific reviews heavily; discount both five-star one-liners and single furious outliers. Better than any review: three recent local references you actually phone.

7. Know what to do if the credential does not check out

If the number is expired, does not exist, or belongs to a different business, stop the process and say why. Sometimes it is genuinely a renewal that is in process — in which case the contractor can show you the renewal receipt. Often it is not. Either way, do not sign, do not pay a deposit, and do not let work start "while we sort it out."

If you have already been harmed by a registered home improvement contractor, the Department of Consumer Protection accepts complaints and administers the Home Improvement Guaranty Fund, which exists to compensate homeowners in defined circumstances. Its protections generally do not extend to work performed by unregistered contractors — which is, in the end, the whole reason to spend the ninety seconds on the lookup.

A quick pre-hire checklist

• Registration or license number received in writing
• Verified active on the state lookup
• Business entity in good standing
• COI received directly from the agency, dates cover the project
• Workers' comp confirmed or exemption explained
• Three recent local references called
• Written contract with scope, price, schedule and change-order terms
• Permit responsibility assigned to the contractor in writing

Eight lines. Perhaps an hour of your time. It is the cheapest insurance you will ever buy on a renovation.