Contractor license guide
Connecticut requires home improvement contractors to register with the Department of Consumer Protection (DCP) before contracting with homeowners for work on residential property. The registration applies to contracts of $200 or more. Builders of new homes need a separate New Home Construction Contractor registration, and salespeople who sell home improvement jobs must also register.
Statewide license
Yes
Last checked
October 16, 2026
Plain-English summary of official sources. Rules and fees change, so confirm with the licensing office before you apply. This guide isn't legal advice.
Anyone who contracts with a consumer for a permanent change to residential property, such as roofs, siding, flooring, painting, driveways, fences, doors and windows, and remodeling.
Any person or business that builds or sells a new home (including speculative homes) to a consumer before occupancy.
Any individual who negotiates or offers to negotiate a home improvement contract with a consumer on behalf of a home improvement contractor.
Construction, structural repair or alteration, or demolition of large structures (at least 4 stories, 60 feet high, a 150-foot clear span, 150,000 square feet, or occupancy of 1,000 people).
Contracts must be in writing, in plain language, and include the contractor's name, address and registration number, the entire agreement, the transaction date, start date and completion date, and signatures and dates of both parties. The homeowner gets a copy at signing plus a notice of cancellation (three copies, at least 10-point bold) allowing cancellation until midnight of the third business day; Saturday counts as a business day. A contract missing required items, or made by an unregistered contractor, is not enforceable against the homeowner. Changes must be in writing. The registration number must appear in all advertising, including business cards and vehicles. The Home Improvement Guaranty Fund can reimburse consumers up to $25,000 after a court judgment or restitution order.
The Department of Consumer Protection licenses electrical work (Electrical Work Examining Board), plumbing (Plumbing and Piping Work Examining Board) and HVAC (Heating, Piping, Cooling and Sheet Metal Work Examining Board). Work covered by a trade license is excluded from home improvement registration.
DCP says home improvement work without a registration is a criminal offense subject to prosecution, and the contractor may be barred from collecting payment. DCP may impose civil penalties of up to $1,500 per violation.
We couldn't confirm these on an official page when we checked. Ask the licensing office before you rely on them:
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