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Connecticut: up to $1,000 a year before you need a contractor registration
In Connecticut you need no state contractor registration while your work comes to up to $1,000 a year, all jobs together. Plumbing, electrical and HVAC: state license. Read from Connecticut's own pages, checked November 6, 2026.
The limit in Connecticut
The limit: Up to $1,000 a year, all jobs together (homes). You can earn up to $1,000 a year without registering: a 12-month total of all your jobs together, not a per-job limit. In short: No registration if all your home-improvement contracts total $1,000 or less in any 12 months; a job of $200 or less isn't 'home improvement' at all.
What counts: "Contractor" does not include a person for whom the total price of all of such person's home improvement contracts with all of such person's customers does not exceed one thousand dollars during any period of twelve consecutive months. "Home improvement" covers residential work "in which the total price for all work agreed upon between the contractor and owner or proposed or offered by the contractor exceeds two hundred dollars." The state's words do not say whether materials count toward the limit.
Conditions: The $1,000 is the total of ALL home-improvement contracts with ALL customers over any 12 consecutive months, not per job; Residential work only (private residence or residential rental property up to six units); Electrical, plumbing and heating/cooling work needs a separate state trade license regardless.
Connecticut registers (not licenses) home improvement contractors with DCP. Two dollar figures in the definition: work of $200 or less is not 'home improvement'; and a person whose home-improvement contracts total $1,000 or less in any 12 months is not a 'contractor'.
Licenses in Connecticut
General contractors: State registration, homes only · not fully confirmed. Residential remodel/repair: Home Improvement Contractor registration with DCP (jobs over $200, unless total under the $1,000/12-month floor). Building new homes: New Home Construction Contractor registration (ch. 399a). No commercial general-contractor license confirmed from official sources. Whether Connecticut licenses general contractors for commercial work was not confirmed either way.
Plumbing: State license. State occupational license from DCP / trade boards (Conn. Gen. Stat. ch. 393, § 20-334).
Electrical: State license. State occupational license (Conn. Gen. Stat. ch. 393, § 20-334).
HVAC: State license. State 'heating, piping and cooling' license (Conn. Gen. Stat. § 20-330, § 20-334); covers air conditioning and refrigeration.
Your license number in Connecticut
Your license number: Licensed tradespeople (electrical, plumbing, heating and cooling and the other licensed trades) must show the number on invoices, bid proposals, contracts, advertising, stationery and vehicles. Home improvement contractors (registration number) must show the number on contracts and advertising.
In the rule's words: “Contractors that fail to display their state license number on all commercial vehicles used in their business and in a conspicuous manner on all advertisements, bid proposals, contracts, invoices and on all stationery used in their business may be fined not more than five hundred dollars per violation, but shall not be fined for the first violation.” (Conn. Gen. Stat. § 20-334(b) and § 20-338e (licensed trades: vehicles, ads, bids, contracts, invoices, stationery; residential invoices/work orders must carry license number); § 20-429(a)(1)(A)(v) (home improvement contracts must contain the registration number); § 20-427(a) (registration number in any advertisement))
Connecticut's board, and when this was checked
The board: Connecticut Department of Consumer Protection (DCP). As of November 6, 2026. Dates on the state's pages: CGA site note: 2026 Supplement, revised to January 1, 2026 (covers 2025 session changes).
This is a summary of each state's own pages as of November 6, 2026, not legal advice. Rules change, and cities and counties add licenses of their own. Check with your state's board, linked on this page, before you rely on it.
Compare Connecticut with every state's limit.
Next door to Connecticut
- Massachusetts: under $500 per job
- New York: no state license
- Rhode Island: under $500 per job (minor work only)
Official sources for Connecticut
11 of Connecticut's own pages, each quoted with its link:
- Conn. Gen. Stat. ch. 400, Home Improvement Act — § 20-419 Definitions (§ 20-419(4)(B)): “"Contractor" does not include a person for whom the total price of all of such person's home improvement contracts with all of such person's customers does not exceed one thousand dollars during any period of twelve consecutive months.”
- Conn. Gen. Stat. § 20-419(5)(A) — 'home improvement' (§ 20-419(5)(A)): “...in which the total price for all work agreed upon between the contractor and owner or proposed or offered by the contractor exceeds two hundred dollars.”
- Conn. Gen. Stat. § 20-420 — Certificate of registration required (§ 20-420(a)): “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”
- Conn. Gen. Stat. § 20-429 — Required contract provisions (§ 20-429(a)(1)(A)(v)): “No home improvement contract shall be valid or enforceable against an owner unless it: ... (v) contains the name and address of the contractor and the contractor's registration number”
- Conn. Gen. Stat. § 20-427 (2026 Supplement) (§ 20-427(a)(1)): “Each person engaged in making home improvements shall ... (ii) include such person's registration number in any advertisement.”
- Conn. Gen. Stat. ch. 399a — New Home Construction Contractors (§ 20-417a): “"New home construction contractor" means any person who contracts with a consumer to construct or sell a new home or any portion of a new home prior to occupancy”
- Conn. Gen. Stat. § 20-334 — License or registration required (§ 20-334(a)): “No person shall engage in, practice or offer to perform the work of any occupation subject to this chapter in this state ... unless such person has first obtained a license as provided in section 20-333”
- Conn. Gen. Stat. § 20-334(b) — license number display (§ 20-334(b)): “Contractors that fail to display their state license number on all commercial vehicles used in their business and in a conspicuous manner on all advertisements, bid proposals, contracts, invoices and on all stationery used in their business may be fined not more than five hundred dollars per violation”
- Conn. Gen. Stat. § 20-338e — Invoices and work orders for work on private residence (§ 20-338e): “...shall include in the invoice or work order for such work or services ... (1) The full legal name and license number of such licensed contractor or the licensed contractor of record for such business”
- Conn. Gen. Stat. § 20-330 — 'Heating, piping and cooling work' (§ 20-330): “"Heating, piping and cooling work" means ... (B) the installation, repair, replacement, maintenance, inspection, testing or alteration of air conditioning and refrigeration systems”
- DCP — What Other License or Registration Does My Contractor Need: “Persons performing electrical, HVAC, plumbing, heating, and similar jobs must have the appropriate Connecticut license”
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