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How do you check a home improvement contractor registration in Connecticut?

In Connecticut, home improvement contractors register with the Department of Consumer Protection, and the state's eLicense lookup lists home improvement contractor records among its license types; the department also suggests asking to see the contractor's registration card and the dates it is valid.

Source: Connecticut Department of Consumer Protection, home improvement page for consumers, read 22 October 2026.
Source: State of Connecticut, eLicense license lookup, read 22 October 2026.
Source: Connecticut Department of Consumer Protection, Consumer Checklist: Hiring a Contractor, read 22 October 2026.

The license lookup is yours to run on the state's site.

InstaBids is an AI-run marketplace for homeowners and property managers: describe a home job once, by chat or through your own AI assistant, add photos, and get multiple written quotes on the same scope, compared apples to apples, with no phone calls or home visits before you pick.

By InstaBids editorial team with AI research agents. Sources last read: 22 October 2026

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What home job do you need done in Connecticut? Describe it once to start your written scope.

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Key facts

Trade license pages

Where do you look up a home improvement registration in Connecticut?

On eLicense, the State of Connecticut's license lookup on the elicense.ct.gov site, listed in the sources below. Its license type list, read 22 October 2026, includes "Home Improvement Contractor".

Source: State of Connecticut, eLicense license lookup, read 22 October 2026.

The department's home improvement page, read 22 October 2026, says: "In Connecticut, all Home Improvement Contractors, New Home Construction Contractors, and Home Improvement Salespeople must be registered with the Department of Consumer Protection (DCP)."

Source: Connecticut Department of Consumer Protection, home improvement page for consumers, read 22 October 2026.

What else does the department suggest before you hire?

Its hiring checklist adds a phone route for complaint history and a look at the contractor's wallet card.

Source: Connecticut Department of Consumer Protection, Consumer Checklist: Hiring a Contractor, read 22 October 2026.

The checklist, read 22 October 2026, says: "When reaching us by phone, you can also inquire whether a contractor has a history of complaints with our agency."

Source: Connecticut Department of Consumer Protection, Consumer Checklist: Hiring a Contractor, read 22 October 2026.

On the card: "Each registered Home Improvement Contractor is given a wallet card, good for one year."

Source: Connecticut Department of Consumer Protection, Consumer Checklist: Hiring a Contractor, read 22 October 2026.

And: "Ask to see the registration card and check the valid dates."

Source: Connecticut Department of Consumer Protection, Consumer Checklist: Hiring a Contractor, read 22 October 2026.

Which jobs need this registration in Connecticut?

Work on a home, in the department's words, with some jobs left out, among them trade-licence work and contracts under a set amount. The department's page on the type of work, read 22 October 2026, says: "Under the Connecticut Home Improvement Act, an individual and/or business is required to register with the Department of Consumer Protection if they are contracting with a consumer to perform work on a residential property."

Source: Connecticut Department of Consumer Protection, What type of work qualifies as home improvement?, read 22 October 2026.

It adds: "Home improvement includes any permanent change to a residential property."

Source: Connecticut Department of Consumer Protection, What type of work qualifies as home improvement?, read 22 October 2026.

Its list of what home improvement does not include has this item: "Work that is covered under the scope of a trade license"

Source: Connecticut Department of Consumer Protection, What type of work qualifies as home improvement?, read 22 October 2026.

The same list also has this item: "Work where the contract is less than $200"

Source: Connecticut Department of Consumer Protection, What type of work qualifies as home improvement?, read 22 October 2026.

What do Connecticut's statutes say about registration numbers?

The Home Improvement Act is chapter 400 of the Connecticut General Statutes, published by the Connecticut General Assembly; section 20-420, as quoted here, begins: "No person shall hold such person out to be a contractor or salesperson without first obtaining a certificate of registration from the commissioner as provided in this chapter"

Source: Connecticut General Assembly, General Statutes chapter 400, read 22 October 2026.

Section 20-427 reads, in subsection (a): "(a) Each person engaged in making home improvements shall (1) exhibit his certificate of registration upon request by any interested party, (2) state in any advertisement the fact that he is registered, and (3) include his registration number in any advertisement."

Source: Connecticut General Assembly, General Statutes chapter 400, read 22 October 2026.

Among the items section 20-429 lists for a home improvement contract is this one: "(v) contains the name and address of the contractor and the contractor's registration number"

Source: Connecticut General Assembly, General Statutes chapter 400, read 22 October 2026.

What should you ask a Connecticut contractor before you search?

Ask for the registration number and the exact business name, look both up on eLicense, and settle in writing who pulls the building permit. These are practical suggestions, not the department's rules.

Source: State of Connecticut, eLicense license lookup, read 22 October 2026.
Source: Connecticut Department of Consumer Protection, Pulling a building permit for a home improvement project, read 22 October 2026.

  1. Ask for the registration number as it will appear on the contract.

    Source: Connecticut General Assembly, General Statutes chapter 400, read 22 October 2026.

  2. Ask to see the wallet card and note the dates on it.

    Source: Connecticut Department of Consumer Protection, Consumer Checklist: Hiring a Contractor, read 22 October 2026.

  3. Search the number, then the business name, on eLicense, and read the status on the result.

    Source: State of Connecticut, eLicense license lookup, read 22 October 2026.

  4. Ask the department by phone about any complaint history.

    Source: Connecticut Department of Consumer Protection, Consumer Checklist: Hiring a Contractor, read 22 October 2026.

  5. Agree who will get the building permit, and have that named in the contract.

    Source: Connecticut Department of Consumer Protection, Pulling a building permit for a home improvement project, read 22 October 2026.

The department's permit page says: "Both parties must agree on who will obtain the building permit."

Source: Connecticut Department of Consumer Protection, Pulling a building permit for a home improvement project, read 22 October 2026.

It adds: "The responsible party should be named in the contract."

Source: Connecticut Department of Consumer Protection, Pulling a building permit for a home improvement project, read 22 October 2026.

Who sees your contact details when you post a job on InstaBids?

One point about InstaBids follows. Contact details stay hidden until the homeowner picks a contractor and they confirm the connection.

Source: InstaBids process and privacy, live-page excerpts, read 22 October 2026.

Post your job on InstaBids, and contractors can bid in writing on one written scope.

Homeowners anywhere in the US can post a job; once you send it, InstaBids finds contractors to bid on it.

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