Connecticut Contractor Licenses: Updated Requirements Guide

Connecticut regulates contractor licensing at the state level through the Connecticut Department of Consumer Protection (DCP). Core construction trades such as electrical, plumbing, HVAC, sheet metal, and fire protection require state-issued occupational licenses, and general building work is covered by state registrations (Major Contractor, Home Improvement Contractor, and New Home Construction Contractor).

Examinations for trade licenses are administered by PSI, and most licenses renew annually with continuing education requirements for technical trades. This guide walks you through every major trade in Connecticut, including exact experience, exams, fees, insurance, and renewal details sourced directly from the DCP and PSI.

If you plan to operate a contracting business, be prepared to register your entity and carry general liability insurance. You can apply and manage your credentials through Connecticut’s online portal at eLicense.ct.gov.

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Overview of Connecticut Contractor Licensing

The Connecticut Department of Consumer Protection (DCP) is the statewide authority for contractor licensing and registration. DCP oversees occupational licenses for electrical, plumbing, heating/cooling, sheet metal, and fire protection trades, including qualifications, examinations, and renewals. General building work is regulated via state registrations for Major Contractors, Home Improvement Contractors, and New Home Construction Contractors.

Exams for trade licenses are delivered by PSI, and many licenses require documented apprenticeship, verified journeyperson experience, and related classroom instruction. Most trade licenses renew annually and require 4 hours of continuing education focused on code updates and state regulations. Business entities engaging in contracting work typically must maintain at least $20,000 in general liability insurance.

Connecticut’s major contractor trades are regulated at the state level by DCP. Municipal building departments still enforce permits and inspections, but, for the trades covered in this guide, local jurisdictions in Connecticut do not issue separate contractor licenses that supersede state credentials.

Primary Licensing Authority

Connecticut Department of Consumer Protection
450 Columbus Blvd, Suite 901, Hartford, CT 06103
Email: [email protected]

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Electrician Licenses in Connecticut

Connecticut regulates electrical work with 4 license types:

E-1 Unlimited Electrical Contractor

Requirements

  • Experience: 8,000 hours as a journeyperson, plus prior 8,000 hours as an apprentice (total 16,000 hours).
  • Experience details: Notarized letters from employers; completion of a Connecticut-approved apprenticeship program.
  • Education: Completion of a DCP-approved apprenticeship or equivalent; must hold an unlimited journeyperson license for at least 2 years.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Unlimited Electrical Contractor Examination (E-1)
  • Format: Computer-based, closed book (state-supplied references only)
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: 2020 NEC; Connecticut statutes; NFPA 70E; other PSI-provided materials
  • Topics: General electrical knowledge; wiring and protection; wiring methods/materials; equipment; motors/controls; special occupancies/equipment; safety; state laws
  • Retake Policy: Retake permitted by PSI; new exam fee required

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor business registration.
  • Renewal: Annual; Continuing Education—4 hours focused on NEC updates and state laws.

Source: DCP License, Permit & Registration Forms

E-2 Unlimited Electrical Journeyperson

Requirements

  • Experience: 8,000 hours on-the-job apprenticeship training.
  • Experience details: Completion of state-approved apprenticeship; verified by sponsor and education provider.
  • Education: 144 hours/year related instruction for a minimum of 4 years.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Unlimited Electrical Journeyperson Examination (E-2)
  • Format: Computer-based, closed book (state-supplied references)
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: 2020 NEC; state statutes provided in the exam room
  • Topics: General electrical knowledge; wiring/protection; equipment and safety; motors/controls; wiring methods
  • Retake Policy: Retake permitted by PSI; exam fee applies per attempt

Fees

  • Application: $90
  • Examination: $65
  • Initial License: $120
  • Renewal: $120 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Not required at the journeyperson level.
  • Renewal: Annual; Continuing Education—4 hours (NEC changes and electrical safety).

Source: DCP: What License or Registration Does My Contractor Need?

C-6 Limited Electrical Contractor for Telephone Interconnect

Requirements

  • Experience: 2,000 hours as a C-7 limited journeyperson plus 4,000 hours as an apprentice.
  • Experience details: Notarized employment letters and completion certificates.
  • Education: Recognized telephone/interconnect apprenticeship or equivalent training.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Limited Electrical Contractor (C-6) Exam
  • Format: Computer-based, closed book
  • Questions/Time: 60 questions in 3 hours
  • Passing Score: 70%
  • Allowed References: 2020 NEC; state statutes provided
  • Topics: Telephone wiring; equipment installation; code compliance; safety
  • Retake Policy: Retake allowed by PSI; new fee required

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor entities.
  • Renewal: Annual; Continuing Education—4 hours (telecommunications code updates).

Source: DCP License, Permit & Registration Forms

C-5 Limited Electrical Contractor for Low Voltage Systems

Requirements

  • Experience: 2,000 hours documented as a C-6 journeyperson plus apprenticeship.
  • Experience details: Notarized employment verification; apprenticeship documentation.
  • Education: Completion of a state-approved related training program.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Limited Electrical Contractor (C-5) Exam
  • Format: Computer-based
  • Questions/Time: 60 questions in 3 hours
  • Passing Score: 70%
  • Allowed References: 2020 NEC as supplied by test administrator
  • Topics: Low-voltage wiring; alarm systems; telecommunications; fire alarm; security; safety
  • Retake Policy: Retake permitted by PSI; new fee applies

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor entities.
  • Renewal: Annual; Continuing Education—4 hours (low-voltage code updates).

Source: DCP License, Permit & Registration Forms

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Plumbing Licenses in Connecticut

Connecticut regulates plumbing work with 3 license types:

P-1 Unlimited Plumbing Contractor

Requirements

  • Experience: 8,000 hours as a journeyperson, plus a previous 8,000 hours as an apprentice (total 16,000 hours).
  • Experience details: Notarized employment letters and apprenticeship completion documentation.
  • Education: Completion of a DCP-approved apprenticeship program.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Unlimited Plumbing Contractor Exam (P-1)
  • Format: Computer-based, closed book
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: 2021 International Plumbing Code; state statutes
  • Topics: General plumbing; code compliance; installation methods; materials; safety; state regulations
  • Retake Policy: PSI retake allowed; fee required per attempt

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor registration.
  • Renewal: Annual; Continuing Education—4 hours (code and state law updates).

Source: DCP License, Permit & Registration Forms

P-2 Unlimited Plumbing Journeyperson

Requirements

  • Experience: 8,000 hours of apprenticeship.
  • Experience details: Completion of a state-approved apprenticeship; verified by program sponsor.
  • Education: 144 hours/year related instruction for at least 4 years.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Unlimited Plumbing Journeyperson Exam (P-2)
  • Format: Computer-based
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: 2021 IPC; supplied statutes
  • Topics: Basic plumbing; code compliance; materials; methods
  • Retake Policy: PSI retake permitted; new fee required

Fees

  • Application: $90
  • Examination: $65
  • Initial License: $120
  • Renewal: $120 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Not required at the journeyperson level.
  • Renewal: Annual; Continuing Education—4 hours (code changes and safety).

Source: DCP License, Permit & Registration Forms

PJ-1 Limited Contractor, Plumbing and Piping for Fire Sprinklers

Requirements

  • Experience: 4,000+ hours (journeyperson and/or apprentice), verified by employment records.
  • Experience details: Notarized letters plus recognized training in fire sprinkler systems.
  • Education: Completion of apprenticeship or recognized training for fire sprinkler installation.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut PJ-1 Limited Contractor (Fire Sprinklers)
  • Format: Computer-based
  • Questions/Time: 60 questions in 3 hours
  • Passing Score: 70%
  • Allowed References: NFPA standards; relevant building code portions
  • Topics: Fire sprinkler design; installation; safety; codes
  • Retake Policy: Retake permitted; fee required

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor registration.
  • Renewal: Annual; Continuing Education—4 hours (fire protection systems code changes).

Source: DCP License, Permit & Registration Forms

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HVAC Licenses in Connecticut

Connecticut regulates HVAC contractors with 2 license types:

S-1 Unlimited Heating, Piping, and Cooling Contractor

Requirements

  • Experience: 8,000 hours as a journeyperson, plus 2 years of post-journeyperson experience.
  • Experience details: Notarized employment letters and documented work history; completion of apprenticeship required.
  • Education: DCP-approved apprenticeship with 144 hours/year of related classroom instruction.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut S-1 Unlimited Contractor Examination
  • Format: Computer-based, closed book
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: International Mechanical Code; NFPA; state supplementary code (as applicable)
  • Topics: Heating/cooling principles; boilers; ventilation; air distribution; piping; fuel gas; safety
  • Retake Policy: Retake allowed; new fee applies

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor registration.
  • Renewal: Annual; Continuing Education—4 hours (HVAC/mechanical code and safety updates).

Source: DCP License, Permit & Registration Forms

D-2 Unlimited Journeyperson, Cooling

Requirements

  • Experience: 8,000 hours of on-the-job apprenticeship training in refrigeration/air conditioning.
  • Experience details: Documented completion through a state-approved program.
  • Education: 144 hours/year of related instruction for 4 years.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut D-2 Unlimited Journeyperson (Cooling) Exam
  • Format: Computer-based
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: International Mechanical Code; state code
  • Topics: Refrigeration; air conditioning; piping; equipment; safety
  • Retake Policy: Retake permitted; new fee required

Fees

  • Application: $90
  • Examination: $65
  • Initial License: $120
  • Renewal: $120 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Not required at the journeyperson level.
  • Renewal: Annual; Continuing Education—4 hours (HVAC code updates).

Source: DCP License, Permit & Registration Forms

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General Contractor Licenses in Connecticut

Connecticut regulates general contractors with 3 license types:

Major Contractor Registration

Scope & Requirements

  • Classification: Commercial/Institutional/Residential (as defined by DCP).
  • Experience: No minimum hours specified.
  • Documentation: 5 reference letters (credit and skill), project history, and statement of skills.
  • Exam: Not required.

Fees & Insurance

  • Application: $500; Initial Registration: $500
  • Renewal: $500 annually (late penalty $50)
  • Insurance: Required—minimum $20,000 general liability

Renewal

  • Frequency: Annual
  • Continuing Education: None required

Source: DCP Major Contractor Registration

Home Improvement Contractor Registration

Scope & Requirements

  • Classification: Residential work as defined by DCP (including many remodeling trades).
  • Experience/Education: Not specified; no formal education requirements.
  • Exam: Not required.

Fees & Insurance

  • Application: $220; Initial Registration: $220
  • Renewal: $220 annually (late penalty $25)
  • Insurance: Required—minimum $20,000 general liability

Renewal

  • Frequency: Annual
  • Continuing Education: None required

Source: DCP Home Improvement Applications

New Home Construction Contractor Registration

Scope & Requirements

  • Classification: Residential building (new home construction).
  • Experience/Education: Not specified by DCP.
  • Exam: Not required.

Fees & Insurance

  • Application: $530; Initial Registration: $530
  • Renewal: $530 annually (late penalty $40)
  • Insurance: Required—minimum $20,000 general liability

Renewal

  • Frequency: Annual
  • Continuing Education: None required

Source: DCP New Home Construction Contractor Registration

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Roofing Licenses in Connecticut

Connecticut regulates roofing contractors with 2 license types:

Home Improvement Contractor Registration (Roofing)

Scope & Requirements

  • Classification: Residential Roofing Contractor (covered under Home Improvement Contractor registration).
  • Experience/Education: Not specified by DCP.
  • Exam: Not required.

Fees & Insurance

  • Application: $220; Initial Registration: $220
  • Renewal: $220 annually (late penalty $25)
  • Insurance: Required—minimum $20,000 general liability

Renewal

  • Frequency: Annual
  • Continuing Education: None required

Source: DCP Home Improvement Applications

Major Contractor Registration (Commercial Roofing)

Scope & Requirements

  • Classification: Commercial/Institutional Roofing Contractor (covered under Major Contractor registration).
  • Documentation: 5 reference letters and work/project history.
  • Exam: Not required.

Fees & Insurance

  • Application: $500; Initial Registration: $500
  • Renewal: $500 annually (late penalty $50)
  • Insurance: Required—minimum $20,000 general liability

Renewal

  • Frequency: Annual
  • Continuing Education: None required

Source: DCP Major Contractor Registration

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Specialty Trade Licenses in Connecticut

Connecticut regulates specialty trades with 2 license types:

SM-1 Unlimited Sheet Metal Contractor

Requirements

  • Experience: 8,000 hours as a journeyperson.
  • Experience details: Notarized employer letters and apprenticeship completion documentation.
  • Education: State-approved apprenticeship and related classroom education.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Sheet Metal Contractor Examination (SM-1)
  • Format: Computer-based
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: International Mechanical Code; sheet metal code sections
  • Topics: Sheet metal fabrication; installation; safety; HVAC ductwork
  • Retake Policy: PSI retake allowed; fee required

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor entities.
  • Renewal: Annual; Continuing Education—4 hours (sheet metal code updates).

Source: DCP License, Permit & Registration Forms

SP-1 Unlimited Fire Protection Sprinkler Contractor

Requirements

  • Experience: 8,000 hours as a journeyperson.
  • Experience details: Notarized employment verification; apprenticeship/training completion.
  • Education: Recognized state apprenticeship with related instruction.
  • Exam: Required (PSI).

Exam Details

  • Name: Connecticut Fire Protection Sprinkler Contractor (SP-1) Exam
  • Format: Computer-based
  • Questions/Time: 80 questions in 4 hours
  • Passing Score: 70%
  • Allowed References: NFPA 13; building/fire code
  • Topics: Fire protection; systems design; codes; installation practices
  • Retake Policy: Retake allowed with new application and exam fee

Fees

  • Application: $150
  • Examination: $65
  • Initial License: $150
  • Renewal: $150 annually (late penalty $30)

Insurance & Renewal

  • Insurance: Required—minimum $20,000 general liability for contractor entities.
  • Renewal: Annual; Continuing Education—4 hours (fire protection code updates).

Source: DCP License, Permit & Registration Forms

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Application Process

  1. Determine your trade classification and verify you meet experience requirements.
  2. Complete the relevant application from the Department of Consumer Protection.
  3. Gather and attach all required supporting documents (proof of experience, reference letters, insurance certificate, education credentials).
  4. Submit the application and pay all applicable fees.
  5. For trades requiring exams, apply for and pass the PSI examination; PSI will send pass information to the state board.
  6. Receive approval and license/registration from DCP.
  7. Renew annually; complete required continuing education each year.

Timeline: Application review and processing typically take 2–4 weeks after all materials are received and, if needed, examination passed. Apply or renew online at eLicense.ct.gov.

Typical Required Documents

  • Completed application form
  • Proof of experience (notarized letters or apprenticeship verification)
  • Reference letters (if required)
  • Proof of insurance (general liability)
  • Proof of business registration (for entities)
  • Photo ID
  • Proof of education/training (apprenticeship completion)
  • Exam passing notice from PSI (if required)

Reciprocity

Connecticut has reciprocity with: Maine, Massachusetts, Vermont, New Hampshire, Rhode Island.

Requirements: You must hold a current license in good standing from a reciprocating state and provide proof of comparable experience, education, and exam passage. Application, documentation, and fee are required; DCP may request additional documentation or a Connecticut-specific exam if equivalency is not established. Reciprocity is generally available for unlimited electrical and plumbing licenses; other classifications may not be eligible.

Frequently Asked Questions

How long does it take to get a contractor license in Connecticut?

Most applications are processed within 2–4 weeks after all materials are submitted and any required PSI examination is passed. Timelines can extend during peak renewal periods.

Can I transfer my license from another state to Connecticut?

Connecticut maintains reciprocity with Maine, Massachusetts, Vermont, New Hampshire, and Rhode Island for certain unlimited electrical and plumbing licenses. You must document comparable qualifications and exam passage. DCP reviews each request and may require additional steps.

What happens if I fail the exam?

PSI allows retakes after failed attempts. You must pay the exam fee for each attempt and reschedule through PSI per their bulletin.

Do I need insurance?

Yes. Contractor entities typically must carry at least $20,000 in general liability insurance for registration or licensure. Journeyperson licenses do not carry an insurance requirement.

How do I renew my license?

Licenses and registrations renew annually. Most technical trade licenses require 4 hours of continuing education each year; general contractor registrations (Major Contractor, Home Improvement, New Home Construction) do not require CE.

Is contractor licensing handled by cities or counties in Connecticut?

For the major trades covered here, licensing is administered by the state (DCP). Local building departments still issue permits and conduct inspections, but they do not replace or supersede state-issued licenses for these trades.

Where can I find practice tests for Connecticut exams?

We offer comprehensive PDF practice tests for Connecticut contractor exams. Most include 1,500–2,500 questions, with answer keys and reference locators to exact code sections, and can be studied offline with no time or use limits. Browse Connecticut contractor practice tests.

How do I apply online?

Use Connecticut’s official portal at eLicense.ct.gov to apply, renew, and manage your license or registration. For forms and instructions, see DCP License, Permit & Registration Forms.

Connecticut · Practice tests

Connecticut contractor license practice tests

The Connecticut practice tests we publish today: comprehensive PDF guides, typically 1,500 to 2,500 questions each, with full answer keys and reference locators to the exact code sections. We add new tests regularly, so if your license isn’t listed here, contact us and we’ll build it.

Browse all Connecticut tests →

Official Sources & References

Official Sources:

  1. Connecticut Department of Consumer Protection – License, Permit & Registration Forms
    https://portal.ct.gov/dcp/license-services-division/all-license-applications/license-permit–registration-forms
    Official Board Site | Accessed: 2025-11-03
  2. Connecticut Department of Consumer Protection – Major Contractor Registration
    https://portal.ct.gov/dcp/license-services-division/all-license-applications/major-contractor-registration-application
    Official Board Site | Accessed: 2025-11-03
  3. Connecticut Department of Consumer Protection – Home Improvement Applications
    https://portal.ct.gov/dcp/license-services-division/all-license-applications/home-improvement-applications
    Official Board Site | Accessed: 2025-11-03
  4. Connecticut Department of Consumer Protection – What License or Registration Does My Contractor Need?
    https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/what-other-license-or-registration-does-my-contractor-need
    Official Board Site | Accessed: 2025-11-03
  5. Connecticut Department of Consumer Protection – Main Licensing Home
    https://portal.ct.gov/dcp
    Official Board Site | Accessed: 2025-11-03
  6. Connecticut Department of Consumer Protection – Business Licensing and Registration
    https://www.elicense.ct.gov/
    Official Board Site | Accessed: 2025-11-03
  7. PSI Exams Connecticut Licensing Candidate Information Bulletin
    https://candidate.psiexams.com/
    Exam Provider | Accessed: 2025-11-03
  8. Connecticut Department of Consumer Protection – Occupational and Professional Licenses
    https://portal.ct.gov/dcp/license-services-division/all-license-applications/license-permit–registration-forms
    Official Board Site | Accessed: 2025-11-03
  9. Connecticut Department of Consumer Protection – Home Construction Contractor Registration
    https://portal.ct.gov/dcp/license-services-division/all-license-applications/home-construction
    Official Board Site | Accessed: 2025-11-03

⚠️ Important Disclaimer

Information Currency: This guide reflects licensing information as available in 2025. Licensing requirements are subject to change without notice. Always verify current requirements with official sources.

Official Source: For current information, contact Connecticut Department of Consumer Protection:

No Legal Advice: This guide provides general information only. Consult with the licensing board or a qualified professional for guidance specific to your situation.

Local Requirements: Permitting and inspections are handled locally, but major trade licensing in Connecticut is administered by the state (DCP). Always coordinate with the local building department for permits on each project.

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