Home Improvement Contractor License in Connecticut

Connecticut calls its home improvement credential a certificate of registration, not a license, and the state's Department of Consumer Protection (DCP) issues it to anyone who repairs, remodels or improves existing residential property for pay. You register online through DCP's eLicense system, carry at least $20,000 in general liability insurance, and pay into a guaranty fund that protects your customers if a job goes wrong.

At a glance

• Required for most paid work on existing homes; new construction uses a separate New Home Construction Contractor registration.
• No exam. Registration, insurance proof and a fee are the gate.
• Minimum $20,000 general liability insurance.
• $120 registration fee plus a $100 Home Improvement Guaranty Fund fee, $220 total, due with the application and again at each annual renewal.
• Certificates expire every year on March 31.

See our Connecticut contractor license overview for how this registration fits alongside the state's other trade credentials, and our contractor license page for how licensing works across states generally.

Who has to register

Connecticut's Home Improvement Act defines "home improvement" as repair, replacement, remodeling, alteration, conversion, modernization, rehabilitation or addition work on a private residence, dwelling or residential rental property, including driveways, roofs, siding, windows, doors, fencing, flooring, patios, pools, sunrooms and water, fire or storm restoration, where the total contract price is more than $200 (Conn. Gen. Stat. § 20-419(5)). New home construction, pure retail sales of goods, work on commercial property, removable appliances, tree and shrub work, and work an owner does unpaid on their own property are excluded.

A person who "undertakes, offers to undertake or agrees to perform" that kind of work is a "contractor" who must hold a certificate of registration before doing the work (§ 20-420(a)). There is one carve out: if the total of all your home improvement contracts with all your customers does not exceed $1,000 in any 12 consecutive months, you are not a "contractor" under the act and do not need to register (§ 20-419(4)). That is a rolling 12 month test on your total volume, not a per job exemption.

Section 20-428 exempts a short list of others from the whole chapter: state and federal government bodies, vocational education programs, and anyone who already holds a current professional or occupational license for the work, such as a licensed electrician, plumber or HVAC technician performing the trade work their license covers. That license holder still needs home improvement registration if they take on remodeling work outside what their trade license authorizes.

The $200 figure and the $1,000 figure answer two different questions. The $200 line decides whether a given job counts as a "home improvement" at all under the act, which in turn decides whether the written contract rules below apply to that job. The $1,000 line decides whether the person doing the work has to be a registered contractor in the first place, counting every home improvement contract that person has with every customer over a rolling 12 months, not any single job.

A handyman who does one $150 repair owes no registration, and the job is not even a "home improvement" under the statute. A handyman who does four $300 jobs for four different customers in the same year has crossed $1,000 in total and needs to register, even though each individual job was small.

The definition also reaches condominiums and other common interest communities, and residential rental property, not only owner occupied homes. A landlord hiring work on a rental unit is covered the same as a homeowner hiring work on a primary residence.

Registration at a glance

Notes: the salesperson registration carries the same $120 fee plus a $40 Guaranty Fund fee ($160 total) rather than the contractor's $100. Confirm any figure that has changed since this was written with DCP directly.

How to register

1. Confirm your work meets the home improvement definition above and that you are not under the $1,000 aggregate exemption.
2. If you operate as a business entity, register that entity with the Connecticut Secretary of the State first.
3. Create an account at eLicense Connecticut and start a Home Improvement Contractor application.
4. Enter your general liability insurer's name and policy number; coverage must be at least $20,000.
5. Complete a Criminal Conviction Application Worksheet if you have a criminal history to disclose.
6. Pay the $220 due with the application (the $120 registration fee and $100 Guaranty Fund fee together).
7. Renew by March 31 each year.

DCP processes applications through the same eLicense portal homeowners use to look up a contractor, so a registration you hold is the same record a customer can check before signing with you. Keep your insurer's name and policy number current in that record; a lapsed insurance filing is one of the fastest ways a registration slips into non-renewal status.

New home construction is a different registration

Building or selling a new home before occupancy falls under a separate New Home Construction Contractor (NHCC) registration (Conn. Gen. Stat. § 20-417a and § 20-417b), not the home improvement certificate. An NHCC holder who also wants to do home improvement work on existing homes can add that authorization by notifying the DCP commissioner in writing and paying the Home Improvement Guaranty Fund fee, rather than filing a wholly separate application. For the broader picture of how Connecticut's contractor and trade credentials fit together, see our general contractor license Connecticut guide.

Specialty trades still need their own license

Home improvement registration does not cover electrical, plumbing or HVAC work. Those trades are licensed separately by DCP's occupational licensing division, and a company doing that work needs a license holder associated with the firm the way most states require a supervising license holder for a contracting business. If you are setting up a Connecticut home improvement or trade business and need someone to qualify the company as an owner or full time W-2 employee who supervises the licensed work, read What Is a Qualifying Agent and Hire a Qualifying Agent, or look at our contractor qualifier services if you need a qualifier placed.

Your contract has to be in writing

Conn. Gen. Stat. § 20-429 requires a home improvement contract to be in writing and signed by both the contractor and the owner, dated, and to state the contractor's name, address and registration number along with a starting date and a completion date. A contractor who does not meet these requirements can still be denied payment for the work; the only exception is where a court finds it would be inequitable to deny the contractor recovery. Keep every change order in writing too, since the same contract rules apply to amendments.

The customer's three day right to cancel

Connecticut's Home Solicitation Sales Act (Chapter 740, § 42-137) gives a customer three business days to cancel a home improvement contract after signing, and § 42-135a requires the contract to carry a printed Notice of the Customer's Right to Cancel. Saturday counts as a business day for this count; Sunday and the state's legal holidays do not. No work should start during that three day window unless the customer separately signs a waiver, which is meant for genuine emergency repairs, not routine convenience. Build this notice into your standard contract template rather than adding it after the fact, since a missing cancellation notice is a written contract defect under § 20-429 on top of being a Home Solicitation Sales Act problem.

What happens if you work without registering

Taking on home improvement work without a certificate is a class B misdemeanor (§ 20-427(b)(5), (c)(1)). Failing to refund a customer within ten days under the Act's specific refund conditions is a separate violation, and that one alone carries a dollar-based split: a class B misdemeanor at a total cash price of $10,000 or less, a class A misdemeanor above $10,000 (§ 20-427(b)(8), (c)(2)). DCP can also assess a civil penalty of up to $1,500 per violation after notice and a hearing (§ 20-427(d)). Beyond the penalties, an unregistered contractor's customer cannot be made to pay under a contract that does not meet the written contract rules above, and the Home Improvement Guaranty Fund (which pays up to $25,000 on a claim, filed within two years of a final judgment or the end of the appeal period) only protects customers of registered contractors.

FAQ

Is this a license or a registration? DCP calls it a certificate of registration. There is no exam; the requirements are the application, proof of insurance, and the fee.

Do I need to register for a single small job? Only if your total home improvement contracts with all customers exceed $1,000 in any 12 consecutive months. Below that, you are outside the "contractor" definition.

Does a licensed electrician or plumber also need home improvement registration? Not for work their trade license already covers. They need it only if they take on home improvement work outside that license's scope.

How long does a certificate last? Certificates expire every year on March 31 and must be renewed with the same fees.

What if my contractor never registered? Verify any contractor's registration at eLicense Connecticut before signing. An unregistered contractor's business is both a misdemeanor exposure for them and a gap in your Guaranty Fund protection.

Does home improvement registration cover new construction? No. Building a new home before occupancy needs the separate New Home Construction Contractor registration under § 20-417a and § 20-417b.

Can a customer cancel a signed home improvement contract? Yes, for three business days after signing, under the Home Solicitation Sales Act. The contract must include a printed notice of that right, and work should not start during the cancellation window outside a signed emergency waiver.

Does the home improvement rule apply to rental property I own? Yes. The definition covers residential rental property and common interest communities the same way it covers an owner occupied home.

If you are building out a Connecticut home improvement or contracting business and want help thinking through registration, qualifying agent placement, or how your Connecticut credentials fit with work in other states, call 615-219-2110 or visit Hire a Qualifying Agent.

Sources

• Connecticut General Statutes, Chapter 400, Home Improvement Act (sections 20-419, 20-420, 20-421, 20-427, 20-428, 20-429, 20-432), read 2026-10-27
• Connecticut General Statutes, Chapter 399a, New Home Construction Contractors, read 2026-10-27
• CT Department of Consumer Protection, Home Improvement Contractor Application, read 2026-10-27
• CT Department of Consumer Protection, Home Improvement for Consumers, read 2026-10-27
• CT Department of Consumer Protection, Can I cancel a home improvement contract?, read 2026-10-27
• Connecticut General Statutes, Chapter 740, Home Solicitation Sales Act (sections 42-134a, 42-135a, 42-137), read 2026-10-27