Connecticut Contractor Licenses: Updated Requirements Guide
Connecticut regulates most construction trades at the state level through the Department of Consumer Protection (DCP) and other state agencies. Electricians, plumbers, HVAC and sheet metal workers, elevator mechanics, fire protection contractors, well drillers, solar trades, and spa/pool trades hold state-issued licenses or registrations that are valid statewide under Connecticut General Statutes Chapter 393. Environmental abatement (asbestos and lead) is licensed by the Department of Public Health (DPH), and demolition contractors are licensed by the Department of Administrative Services (DAS), Office of State Fire Marshal.
This guide explains how Connecticut’s major contractor licenses work, what qualifications you need, typical fees, insurance and renewal requirements, and where to apply. We highlight several representative licenses and authorities for Connecticut below; this guide is updated periodically as additional topics are requested by readers.
Local building departments still issue permits and enforce codes, but for Chapter 393 trades you do not need additional municipal contractor or journeyperson licenses once you are state-licensed. Always coordinate with the local authority having jurisdiction for permits, inspections, and local code amendments on your projects.
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Overview of Connecticut Contractor Licensing
The Connecticut Department of Consumer Protection (DCP) is the primary regulator for occupational trade licenses such as electrical; plumbing and piping; heating, piping, cooling, and sheet metal; elevator; fire protection sprinkler; solar; well drilling; and spa/pool. Within DCP, trade-specific examining boards oversee scopes of work and qualifications, including the Electrical Work Examining Board, Plumbing and Piping Work Examining Board, Heating, Piping, Cooling and Sheet Metal Work Examining Board, Elevator Work Examining Board, and Fire Protection Sprinkler Systems Work Board. DCP also administers Home Improvement Contractor and New Home Construction Contractor registrations for residential contracting businesses.
The Connecticut Department of Public Health (DPH) licenses environmental abatement firms and personnel (asbestos and lead) through the Environmental Practitioner Licensure Unit. The Connecticut Department of Administrative Services (DAS), Office of State Fire Marshal licenses demolition contractors (Class A and Class B). Together, these agencies cover the major contractor credentials needed to lawfully contract and perform work in the state.
Under CGS Chapter 393 (see Section 20‑338), trade licenses issued by the state’s examining boards authorize work statewide without additional municipal licensing or exams. Local building departments continue to require permits and inspections. DCP identifies PSI Examination Services as the vendor administering most construction-trade licensing exams after the board approves eligibility, and the state’s eLicense portal streamlines online applications and renewals.
Browse all Connecticut contractor license practice tests →
Electrician Licenses in Connecticut
Connecticut regulates electrical work with 6 license types. Exams are administered by PSI after DCP approves your eligibility. Contractor-level licenses generally require proof of insurance; journeypersons work under licensed contractors.
E-1 UNLIMITED ELECTRICAL CONTRACTOR
Who regulates this license?
Connecticut Department of Consumer Protection – Electrical Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- At least two years as an unlimited licensed journeyperson (or six years equivalent experience and training).
- Completion of a registered electrical apprenticeship (or equivalent) prior to journeyperson licensure.
Exam
- Provider: PSI
- Format: Computer-based, open-book NEC trade exam with Connecticut-specific content plus contractor business and law.
- Scheduling: Apply to DCP; once approved, schedule directly with PSI (web or phone) per DCP exam bulletins.
Fees
- Application: $150
- Initial license: $150
- Renewal: $150 (annual)
- Exam fee is paid to PSI at scheduling.
Insurance
Required general liability coverage for contractor-level licensees; verify minimums with DCP.
Renewal
- Frequency: Annual
- Continuing education: 4 hours (NEC updates, Connecticut amendments, safety topics per DCP curricula).
E-2 UNLIMITED ELECTRICAL JOURNEYPERSON
Who regulates this license?
DCP – Electrical Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Completion of a registered electrical apprenticeship or at least four years of equivalent experience and training (commonly ~8,000 OJT hours plus related instruction).
Exam
- Provider: PSI
- Format: Computer-based, open-book National Electrical Code with Connecticut amendments.
- Scheduling: After DCP approves eligibility, schedule with PSI.
Fees
- Application: $90
- Initial license: $120
- Renewal: $120 (annual)
- Exam fee paid to PSI.
Insurance
Not required for individual journeypersons; you must work for an insured, licensed contractor.
Renewal
- Frequency: Annual
- Continuing education: 4 hours (code and safety per DCP).
C-5 LIMITED ELECTRICAL CONTRACTOR (Low Voltage ≤48V/8A; Alarm/Signal, Audio/Sound, Telephone-Interconnect)
Who regulates this license?
DCP – Electrical Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- At least two years as a properly licensed limited journeyperson or six years equivalent experience and training within C‑5 scope.
- Completion of a registered limited electrical apprenticeship or equivalent schooling.
Exam
- Provider: PSI
- Format: Computer-based low-voltage trade exam plus contractor business and law.
- Scheduling: Through PSI after DCP approval.
Fees
- Application: $150
- Initial license: $150
- Renewal: $150 (annual)
Insurance
Required general liability coverage for contractor-level licensees; verify limits with DCP.
Renewal
- Frequency: Annual
- Continuing education: 4 hours (low-voltage and code changes for C‑5/C‑6 and L‑5/L‑6).
C-6 LIMITED ELECTRICAL JOURNEYPERSON (Low Voltage ≤48V/8A; Alarm/Signal, Audio/Sound, Telephone-Interconnect)
Who regulates this license?
DCP – Electrical Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Completion of a registered limited electrical apprenticeship or at least four years of equivalent experience and training within the C‑6 scope.
- Related classroom instruction for the C‑6 category.
Exam
- Provider: PSI
- Format: Computer-based, technical questions on low-voltage systems within statutory limits.
- Scheduling: With PSI after DCP approval.
Fees
- Application: $90
- Initial license: $120
- Renewal: $120 (annual)
Insurance
Not required for individual journeypersons; employment must be under an insured contractor.
Renewal
- Frequency: Annual
- Continuing education: 4 hours (low-voltage and code changes).
L-5 LIMITED ELECTRICAL CONTRACTOR (Low Voltage ≤25V/5A; Alarm/Signal, Audio/Sound)
Who regulates this license?
DCP – Electrical Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Two years as an L‑6 journeyperson or six years of equivalent experience/training within L‑5 scope (≤25 volts/5 amperes from an outlet or connection installed by a properly licensed electrician).
- Limited electrical apprenticeship or equivalent low-voltage training.
Exam
- Provider: PSI
- Format: Computer-based technical exam plus business and law.
- Scheduling: With PSI after DCP approval.
Fees
- Application: $150
- Initial license: $150
- Renewal: $150 (annual)
Insurance
Required general liability; confirm minimums with DCP.
Renewal
- Frequency: Annual
- Continuing education: 4 hours (alarm/low-voltage topics per DCP curriculum).
L-6 LIMITED ELECTRICAL JOURNEYPERSON (Low Voltage ≤25V/5A; Alarm/Signal, Audio/Sound)
Who regulates this license?
DCP – Electrical Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Completion of a limited electrical apprenticeship or at least four years equivalent experience and training within L‑6 scope.
- Required related classroom instruction.
Exam
- Provider: PSI
- Format: Computer-based journeyperson trade exam.
- Scheduling: With PSI after DCP eligibility approval.
Fees
- Application: $90
- Initial license: $120
- Renewal: $120 (annual)
Insurance
Not required for individual journeypersons; work under an insured limited electrical contractor (e.g., L‑5).
Renewal
- Frequency: Annual
- Continuing education: 4 hours (low-voltage topics and code changes).
Plumbing Licenses in Connecticut
Connecticut regulates plumbing work with 3 license types. Exams are provided by PSI after DCP approves your application. Contractor-level plumbing work requires insurance; journeypersons work under licensed contractors.
P-1 UNLIMITED PLUMBING CONTRACTOR
Who regulates this license?
DCP – Plumbing and Piping Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- At least two years as an unlimited licensed journeyperson (or equivalent) prior to upgrade.
- Completion of a P‑2 apprenticeship or equivalent training.
Exam
- Provider: PSI
- Format: Computer-based, open-book trade exam plus Connecticut business and law.
- Scheduling: Apply with DCP; schedule with PSI after approval.
Fees
- Application: $150
- Initial license: $150
- Renewal: $150 (annual)
Insurance
Required general liability; confirm minimum coverage with DCP.
Renewal
- Frequency: Annual
- Continuing education: 7 hours (plumbing code updates and DCP-prescribed topics).
P-2 UNLIMITED JOURNEYPERSON PLUMBER
Who regulates this license?
DCP – Plumbing and Piping Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Completion of a registered plumbing and piping apprenticeship or equivalent experience and training (commonly ~8,000 OJT hours plus classroom instruction).
Exam
- Provider: PSI
- Format: Computer-based trade exam (open-book) against Connecticut’s adopted plumbing code.
- Scheduling: With PSI after DCP approval.
Fees
- Application: $90
- Initial license: $120
- Renewal: $120 (annual)
Insurance
Not required for individual journeypersons; work under a licensed contractor’s insurance.
Renewal
- Frequency: Annual
- Continuing education: 7 hours (per DCP curricula).
J-2 LIMITED PLUMBING AND PIPING JOURNEYPERSON (Domestic Water Pumps and Water Conditioning)
Who regulates this license?
DCP – Plumbing and Piping Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Appropriate limited apprenticeship or equivalent experience for the J‑2 scope (domestic water pumps and water conditioning).
- Required related classroom instruction hours per DCP license tables.
Exam
- Provider: PSI
- Format: Computer-based, trade-specific exam.
- Scheduling: Through PSI once DCP approves eligibility.
Fees
- Application: $90
- Initial license: $120
- Renewal: $120 (annual)
Insurance
Not required for individual journeypersons; employment must be under a properly licensed contractor.
Renewal
- Frequency: Annual
- Continuing education: 3 hours (limited plumbing topics).
HVAC Licenses in Connecticut
Connecticut regulates HVAC contractors with 4 license types across heating, piping, cooling, and sheet metal. Exams are administered by PSI after DCP board approval. Contractor-level licenses require insurance; journeypersons work under licensed contractors.
S-1 UNLIMITED HEATING, PIPING, AND COOLING CONTRACTOR
Who regulates this license?
DCP – Heating, Piping, Cooling and Sheet Metal Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- At least two years as a licensed S‑2 journeyperson or equivalent experience/training covering all heating, piping, and cooling work defined in CGS §20‑330.
- Completion of an S‑2 apprenticeship or equivalent training prior to upgrade.
Exam
- Provider: PSI
- Format: Computer-based technical exam (open-book) plus contractor business and law.
- Scheduling: With PSI after DCP approval.
Fees
- Application: $150
- Initial license: $150
- Renewal: $150 (annual)
Insurance
Required general liability; verify minimum coverage with DCP.
Renewal
- Frequency: Annual
- Continuing education: 5 hours (mechanical code changes, fuel gas safety, and trade topics).
S-2 UNLIMITED HEATING, PIPING, AND COOLING JOURNEYPERSON
Who regulates this license?
DCP – Heating, Piping, Cooling and Sheet Metal Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Completion of a registered S‑2 apprenticeship or equivalent multi‑year OJT and related classroom instruction.
Exam
- Provider: PSI
- Format: Computer-based, trade‑specific exam.
- Scheduling: With PSI after DCP establishes eligibility.
Fees
- Application: $90
- Initial license: $120
- Renewal: $120 (annual)
Insurance
Not required for individual journeypersons; employment must be under a licensed contractor.
Renewal
- Frequency: Annual
- Continuing education: 5 hours (trade updates and code changes).
SM-1 LIMITED SHEET METAL CONTRACTOR
Who regulates this license?
DCP – Heating, Piping, Cooling and Sheet Metal Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- At least two years as a licensed journeyperson or equivalent experience/training to perform ductwork system installation, erection, replacement, repair, or alteration for systems of any size/type (with limited exclusions).
- Completion of a sheet metal apprenticeship or equivalent training.
Exam
- Provider: PSI
- Format: Computer-based trade exam plus business and law for contractor scope.
- Scheduling: With PSI after DCP approval.
Fees
- Application: $150
- Initial license: $150
- Renewal: $150 (annual)
Insurance
Required general liability for contractor-level licensees.
Renewal
- Frequency: Annual
- Continuing education: 5 hours (sheet metal/HVAC duct system updates).
SM-2 LIMITED SHEET METAL JOURNEYPERSON
Who regulates this license?
DCP – Heating, Piping, Cooling and Sheet Metal Work Examining Board (https://portal.ct.gov/dcp).
Minimum requirements
- Completion of a registered sheet metal apprenticeship or equivalent experience/training for ductwork and related sheet metal work under a licensed contractor.
Exam
- Provider: PSI
- Format: Computer-based journeyperson trade exam.
- Scheduling: With PSI after DCP determines eligibility.
Fees
- Application: $90
- Initial license: $120
- Renewal: $120 (annual)
Insurance
Not required for individual journeypersons; you must work for a licensed sheet metal contractor.
Renewal
- Frequency: Annual
- Continuing education: 3 hours (code updates and safety).
General Contractor Licenses in Connecticut
Connecticut does not issue a single “general contractor” license for all scopes. Residential building and remodeling activity is regulated via state registrations administered by DCP: Home Improvement Contractor and New Home Construction Contractor. These registrations are required for contracting with consumers on existing homes and new home builds, respectively, and they renew annually on March 31.
Home Improvement Contractor (HIC)
Who regulates this registration?
Connecticut Department of Consumer Protection – License Services Division (https://portal.ct.gov/dcp).
Scope
Registration for businesses and individuals contracting with owners of existing residential property for improvements, repairs, replacements, or alterations. Roofing is expressly included within “home improvement.”
Requirements and insurance
- No trade exam; applicants must meet disclosure and insurance obligations.
- Insurance: General liability of at least $20,000 (provide insurer name and policy number).
Fees and renewal
- Application/Initial: $220
- Renewal: $220 (expires annually on March 31)
New Home Construction Contractor (NHCC)
Who regulates this registration?
Connecticut Department of Consumer Protection – License Services Division (https://portal.ct.gov/dcp).
Scope
Registration for those who build or offer to build new homes, including speculative construction. Applicants must meet insurance and guaranty fund obligations; no state trade exam is specified.
Requirements and insurance
- No trade exam; registration covers new home builders and sellers.
- Insurance: General liability of at least $20,000 (provide insurer and policy number).
Fees and renewal
- Application/Initial: $360 ($240 registration + $120 guaranty fund)
- Renewal: $360 (expires annually on March 31)
Roofing Licenses in Connecticut
Connecticut does not issue a standalone statewide roofing trade license. Roofing on existing residential property falls under the Home Improvement Contractor (HIC) registration. New roofs installed as part of building a new home fall under the New Home Construction Contractor (NHCC) registration when you contract to build or sell new homes.
Commercial roofing and specialty scopes may require business registration, OSHA compliance, and local permits/inspections. If roofing work includes electrical or mechanical components (e.g., solar integration, powered equipment), those portions must be performed by appropriately state-licensed trade contractors. Always obtain necessary local building permits before starting work.
References: DCP’s HIC program guidance and definitions include roofs within home improvement work (DCP HIC).
Specialty Trade Licenses in Connecticut
Connecticut regulates specialty trades with 23 license and certificate types across fire protection, elevator, well drilling, solar, spa/pool, environmental abatement, demolition, and medical gas. Unless noted, credentials are statewide and require renewal each year on dates set by the licensing authority.
F-1 UNLIMITED CONTRACTOR (FIRE SPRINKLER)
Who regulates this license?
DCP – Fire Protection Sprinkler Systems Work Board (https://portal.ct.gov/dcp).
Requirements
- At least two years as an F‑2 journeyperson or equivalent experience; completion of an approved four‑year sprinkler apprenticeship before contractor upgrade.
Exam and fees
- Exam provider: PSI (computer-based)
- Application: $150; Renewal: $150 (licenses expire October 31)
Insurance
Required at contractor level; confirm specifics with DCP and project owners.
F-2 UNLIMITED JOURNEYPERSON (FIRE SPRINKLER)
Who regulates this license?
DCP – Fire Protection Sprinkler Systems Work Board.
Requirements
- Completion of a four‑year sprinkler apprenticeship or equivalent experience.
Exam and fees
- Exam provider: PSI
- Application: $90; Renewal: $120 (expires October 31)
Insurance
Not required for journeypersons; work under an F‑1 contractor’s coverage.
F-3 LIMITED CONTRACTOR (Special Hazard Systems: Foam, CO₂, Dry Chemical, Water Spray, Halon, etc.)
Who regulates this license?
DCP – Fire Protection Sprinkler Systems Work Board.
Requirements
- At least two years as an F‑4 journeyperson or equivalent experience; scope limited to special hazard systems.
Exam and fees
- Exam provider: PSI
- Application: $150; Renewal: $150 (annual)
Insurance
Required general liability appropriate to special hazard suppression work.
F-4 LIMITED JOURNEYPERSON (Special Hazard Systems)
Who regulates this license?
DCP – Fire Protection Sprinkler Systems Work Board.
Requirements
- Completion of a three‑year non‑sprinkler fire protection apprenticeship (special hazard focus) or equivalent experience.
Exam and fees
- Exam provider: PSI
- Application: $90; Renewal: $120 (annual)
Insurance
Not required for journeypersons; work under a licensed contractor.
R-1 UNLIMITED ELEVATOR CONTRACTOR
Who regulates this license?
DCP – Elevator Work Examining Board (https://portal.ct.gov/dcp).
Requirements
- Significant elevator construction and maintenance experience (commonly including apprenticeship completion, ~12,000 OJT hours and 576 classroom hours) plus additional licensed journeyperson experience as outlined in DCP materials.
Exam and fees
- Exam provider: PSI (trade + business)
- Application: $150; Renewal: $150 (licenses expire August 31)
Insurance
Required general liability and workers’ compensation; confirm exact requirements with DCP.
R-2 UNLIMITED ELEVATOR JOURNEYPERSON
Who regulates this license?
DCP – Elevator Work Examining Board.
Requirements
- Completion of a registered elevator apprenticeship or equivalent experience/training.
Exam and fees
- Exam provider: PSI
- Application: $90; Renewal: $120 (expires August 31)
Insurance
Not required for individual journeypersons; employment must be under a licensed contractor.
W-1 WATER SUPPLY DRILLER CONTRACTOR
Who regulates this registration?
DCP – Well Drilling Registrations (https://portal.ct.gov/dcp).
Requirements and exam
- Experience: 24 months as a well driller or two years as W‑2; pass a written examination offered by DCP.
- Exam provider: Not specified by DCP (written exam under department authority).
Fees and renewal
- Application: $88; well drilling registrations expire April 30 each year.
Insurance
Required as specified in CGS §25‑129 and DCP regulations.
Contact DCP to confirm fees, insurance minimums, experience documentation, and renewal details before applying.
W-2 WATER SUPPLY DRILLING JOURNEYPERSON
Who regulates this registration?
DCP – Well Drilling Registrations.
Requirements and exam
- Experience: 24 months as a driller trainee or equivalent; authorizes well construction and pump/motor/piping/wiring/control/tank work under a registered contractor.
- Exam: Written exam offered by DCP.
Fees and renewal
- Application: $88; registrations expire April 30.
Insurance
Not required for journeypersons; work under contractor’s insurance.
Contact DCP to confirm fees, experience documentation, and renewal details before applying.
W-3 LIMITED NON-WATER SUPPLY DRILLER CONTRACTOR
Who regulates this registration?
DCP – Well Drilling Registrations.
Requirements and exam
- Experience: 24 months as a well driller or two years as W‑4; scope covers non‑water‑supply wells (e.g., geothermal, monitoring) and related pump/piping.
- Exam: Written exam under DCP authority.
Fees and renewal
- Application: $88; registrations expire April 30.
Insurance
Required per CGS §25‑129 for well drilling activities.
Contact DCP to confirm ongoing renewal fees, insurance minimums, and documentation requirements before applying.
W-4 LIMITED NON-WATER SUPPLY DRILLING JOURNEYPERSON
Who regulates this registration?
DCP – Well Drilling Registrations.
Requirements and exam
- Experience: One year as a driller trainee or equivalent; work under a registered contractor on non‑water‑supply wells and pumps.
- Exam: Written exam offered by DCP.
Fees and renewal
- Application: $88; registrations expire April 30.
Insurance
Not required for journeypersons; rely on contractor coverage.
Contact DCP to confirm fees and renewal requirements before applying.
W-5 LIMITED WELL CASING EXTENSION CONTRACTOR
Who regulates this registration?
DCP – Well Drilling Registrations.
Requirements and exam
- Experience appropriate to casing extension in existing wells; written exam per DCP regulations.
Fees
- Application: $50 (distinct from other W‑type fees).
Insurance
Required per CGS §25‑129.
Contact DCP to confirm renewal fees, insurance minimums, and experience documentation before applying.
W-6 LIMITED WELL CASING EXTENSION JOURNEYPERSON
Who regulates this registration?
DCP – Well Drilling Registrations.
Requirements and exam
- Hold a Connecticut J‑2 or P‑2 license and meet DCP experience criteria; written exam offered by DCP.
Fees
- Application: $50
Insurance
Not required for journeypersons; work under contractor registration and insurance.
Contact DCP to confirm fees and renewal details before applying.
ST-1 SOLAR THERMAL CONTRACTOR
Who regulates this license?
DCP – Heating, Piping, Cooling and Sheet Metal Work Examining Board.
Requirements
- Experience criteria tied to heating/cooling, sheet metal, hearth products, and fuel gas work as defined by DCP; related instruction in solar thermal design and safety.
Exam and fees
- Exam provider: PSI (trade exam)
- Application: $150; Initial: $150; Renewal: $150 (annual)
Insurance
Required general liability appropriate for solar thermal work.
ST-2 SOLAR THERMAL LIMITED JOURNEYPERSON
Who regulates this license?
DCP – Heating, Piping, Cooling and Sheet Metal Work Examining Board.
Requirements
- Completion of solar thermal apprenticeship or equivalent supervised experience; related classroom instruction in codes and systems.
Exam and fees
- Exam provider: PSI
- Application: $90; Initial: $120; Renewal: $120 (annual)
Insurance
Not required for journeypersons; work under contractor insurance.
PV-1 LIMITED SOLAR ELECTRIC CONTRACTOR
Who regulates this license?
DCP – Electrical Work Examining Board.
Requirements
- Documented solar PV experience; coordination with electrical licensing requirements as PV scope is regulated under electrical licensing.
- Relevant PV training as required by DCP.
Exam and fees
- Exam provider: PSI (trade + business and law)
- Application: $150; Initial: $150; Renewal: $150 (annual)
Insurance
Required general liability; confirm minimums with DCP.
PV-2 LIMITED SOLAR ELECTRIC JOURNEYPERSON
Who regulates this license?
DCP – Electrical Work Examining Board.
Requirements
- Journeyperson-level PV apprenticeship or equivalent supervised experience; related classroom instruction in PV codes and installations.
Exam and fees
- Exam provider: PSI
- Application: $90; Initial: $120; Renewal: $120 (annual)
Insurance
Not required for journeypersons; work under contractor’s insurance.
Swimming Pool Builder (SPB)
Who regulates this license?
DCP – Occupational and Professional Licensing Division.
Requirements
- Documented experience constructing swimming pools and compliance with Chapter 393; consumer contracts for pool work must be entered by an SPB licensee.
Fees and renewal
- Application and initial license fees are generally around $150 each; annual renewal is near $100 (confirm current fees on DCP’s application page).
- Continuing education: typically 4 hours annually (technical and business topics).
Insurance
Required general liability; HIC registration may also be required depending on project scope.
Contact DCP to confirm current fees, CE specifics, and insurance minimums before applying.
SP-1 LIMITED SPA AND POOL CONTRACTOR
Who regulates this license?
DCP – Occupational and Professional Licensing Division.
Requirements
- Experience in spa and pool maintenance and repair; prerequisites as outlined in DCP scope (industry certifications may apply).
Exam and fees
- Exam provider: PSI (business and law + technical)
- Application: $150; Initial: $150; Renewal: $150 (annual)
Insurance
Required general liability; confirm current minimums with DCP.
Asbestos Contractor
Who regulates this license?
Connecticut Department of Public Health – Environmental Practitioner Licensure Unit (https://portal.ct.gov/dph).
Requirements
- Demonstrate that all abatement workers and supervisors hold DPH-approved training and submit training certificates; document experience managing abatement projects and compliance with state/federal asbestos regulations.
Fees and renewal
- Application: $625 (payable as specified by DPH); Renewal: $500 (annual)
Insurance
Required workers’ compensation where applicable (submit certificate or exclusion); general liability as required by program rules.
Lead Abatement Contractor
Who regulates this license?
Connecticut Department of Public Health – Environmental Practitioner Licensure Unit.
Requirements
- Employ certified lead abatement supervisors and workers with DPH-approved training; document that your firm contracts to perform lead hazard reduction by abatement and complies with applicable regulations.
Fees
- Application: $625 (payable to the Treasurer, State of Connecticut).
Insurance
Required workers’ compensation and general liability; provide proof with application.
Contact DPH to confirm renewal cycle, fees, and any ongoing training updates required for supervisors/workers.
Demolition Contractor Class A
Who regulates this license?
Connecticut DAS – Office of State Fire Marshal (https://portal.ct.gov/das).
Requirements
- Five years of supervisory experience demolishing structures over 2½ stories or over 35 feet; evidence of financial responsibility to engage in demolition business.
Application and renewal
- Apply online via the eLicense portal; specific fees are listed in current DAS materials.
Insurance
Required per the State Demolition Code and DAS eligibility guidance.
Contact DAS to confirm current fees, insurance minimums, and renewal requirements before applying.
Demolition Contractor Class B
Who regulates this license?
Connecticut DAS – Office of State Fire Marshal.
Requirements
- Three years of supervisory experience demolishing structures ≤2½ stories or ≤35 feet; evidence of financial responsibility.
Application and renewal
- Apply via eLicense; fees are specified in current DAS materials.
Insurance
Required per the State Demolition Code.
Contact DAS to confirm fees, bonding/insurance, and renewal cycle before applying.
Medical Gas and Vacuum Systems Certificate
Who regulates this certificate?
DCP – Plumbing and Piping Work Examining Board / Heating, Piping and Cooling Work Board.
Requirements
- Hold a P‑1, P‑2, S‑1, S‑2, S‑3, or S‑4 license; ASME Section IX brazing certification; completion of an ANSI/ASSE 6000 series medical gas installation course.
Renewal
- As determined by DCP; keep up with applicable code updates.
Contact DCP to confirm current fees, documentation, and renewal details before applying.
Application Process
- Determine the correct license, registration, or certificate type and review its scope of work on the DCP or DPH website (e.g., electrical, plumbing, heating and cooling, elevator, fire protection, solar, well drilling, home improvement, new home construction, asbestos, lead).
- Meet prerequisite experience and education requirements (often completion of a registered apprenticeship or equivalent experience/training with documented related classroom hours).
- Gather required documents: completed application, proof of experience/training (apprenticeship certificates or employer letters), education transcripts, general liability insurance proof (contractor-level), workers’ compensation documentation if employing workers, and environmental training certificates where applicable.
- Submit your application online via the eLicense portal (or specific forms linked from license pages) and pay the non‑refundable application fee.
- For licenses requiring an exam, await board eligibility approval; then schedule and pay exam fees directly with PSI (or the designated vendor for that credential).
- After passing required exams, pay any initial license or registration fee in eLicense so your credential can be issued.
- Maintain your credential by renewing on schedule, keeping insurance active, and completing any required continuing education before renewal.
Timeline: End-to-end processing typically spans several weeks to a few months, depending on experience verification, exam scheduling, and agency workload.
Frequently Asked Questions
How long does it take to get a contractor license in Connecticut?
Processing varies by license and by the complexity of experience verification. Plan for several weeks to a few months from application to issuance, largely driven by exam scheduling and review time at the licensing authority.
Can I transfer my license from another state to Connecticut?
Connecticut does not offer broad automatic reciprocity. DCP regulation allows examining boards to consider reciprocity agreements, but current electrical guidance states there are no reciprocal agreements for electrical licenses. Most out-of-state applicants qualify via equivalent experience and training and must pass the Connecticut exam.
What happens if I fail the exam?
PSI’s retake and waiting-period policies are set in the candidate bulletins for each trade. After DCP approves eligibility, consult the PSI bulletin for your exam regarding retake limits, fees, and scheduling procedures.
Do I need insurance?
Contractor-level credentials typically require general liability insurance. For example, Home Improvement Contractor and New Home Construction Contractor registrations require at least $20,000 in coverage. Journeypersons generally work under their employer’s insurance. Confirm minimums for your specific credential with DCP, DPH, or DAS.
How do I renew my license?
Most credentials renew annually, but dates vary: HIC/NHCC renew March 31; elevator licenses renew August 31; fire protection sprinkler licenses renew October 31; well drilling registrations renew April 30; many trade licenses renew on their annual cycle per DCP’s fee schedule. Complete any required continuing education before renewing.
What if my city has different requirements than what’s shown here?
Under CGS §20‑338, Chapter 393 contractor and journeyperson licenses are valid statewide without additional municipal licensing or exams. However, building permits, inspections, and code enforcement are handled locally—always coordinate with the local building department for permits and any local code amendments.
Where can I find practice tests for Connecticut exams?
We offer comprehensive PDF study guides typically with 1,500–2,500 questions, complete answer keys, and reference locators pointing to exact code sections. Study offline at your own pace; no time or use limits. Browse Connecticut contractor practice tests.
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.
- Business, Law, and Project Management (NASCLA) Reference Practice Test
- Installing Hardwood Flooring NOFMA - Reference Practice Test
- National Electrical Code (NEC) 2017 Practice Test
Related Official Resources
Official Sources for Further Details:
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Connecticut Department of Consumer Protection – Main Portal
https://portal.ct.gov/dcp
Official Board Site | Accessed: 2026-08-30 -
DCP – Occupational and Professional Licensing Division
https://portal.ct.gov/dcp/agency-administration/division-home-pages/occupational–professional-licensing-division
Official Board Site | Accessed: 2026-08-30 -
DCP – Electrical License Types and Scope of Work
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/electrical-license-types-and-scope-of-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Electrical License Applications
https://portal.ct.gov/dcp/license-services-division/all-license-applications/electrical-license
Official Board Site | Accessed: 2026-08-30 -
DCP – About Careers in the Trades
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/about-careers-in-the-trades
Official Board Site | Accessed: 2026-08-30 -
DCP – Plumbing Licenses and Scope of Work
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/plumbing-licenses-and-scope-of-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Plumbing and Pipefitting Licensing
https://portal.ct.gov/dcp/license-services-division/all-license-applications/plumbing-and-pipefitting-licensing
Official Board Site | Accessed: 2026-08-30 -
DCP – Heating, Piping and Cooling License Types and Scope of Work
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/heating-piping-and-cooling-license-types-and-scope-of-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Sheet Metal Licenses and Scope of Work
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/sheet-metal-licenses-and-scope-of-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Fire Protection Sprinkler Work Licenses
https://portal.ct.gov/dcp/license-services-division/all-license-applications/fire-protection-sprinkler-work-licenses
Official Board Site | Accessed: 2026-08-30 -
DCP – Fire Protection Licenses and Scope of Work
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/fire-protection-licenses-and-scope-of-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Elevator Work License
https://portal.ct.gov/dcp/license-services-division/all-license-applications/elevator-work-license
Official Board Site | Accessed: 2026-08-30 -
DCP – Well Drilling Licenses and Scope of Work
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/well-drilling-licenses-and-scope-of-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Well Drilling Application Information
https://portal.ct.gov/dcp/license-services-division/all-license-applications/well-drilling
Official Board Site | Accessed: 2026-08-30 -
DCP – License Forms for Solar Energy Work
https://portal.ct.gov/dcp/license-services-division/all-license-applications/solar-energy-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Spa and Pool Trades Licenses and Scope of Work
https://portal.ct.gov/dcp/occupational-and-professional-division/occupational–profess/spa-and-pool-trades-licenses-and-scope-of-work
Official Board Site | Accessed: 2026-08-30 -
DCP – Home Improvement Contractor Registration
https://portal.ct.gov/dcp/license-services-division/all-license-applications/home-improvement-applications
Official Board Site | Accessed: 2026-08-30 -
DCP – New Home Construction Contractor Applications
https://portal.ct.gov/dcp/license-services-division/all-license-applications/new-home-construction-contractor-applications
Official Board Site | Accessed: 2026-08-30 -
Connecticut General Statutes – Chapter 393 (Electricians, Plumbers, Solar, Heating, Piping and Cooling, Elevator and Fire Protection Sprinkler Craftsmen)
https://cga.ct.gov/2023/pub/chap_393.htm
State Statute | Accessed: 2026-08-30 -
Connecticut General Statutes – License as contractor and journeyman valid throughout state (Section 20-338)
https://law.justia.com/codes/connecticut/title-20/chapter-393/section-20-338/
State Statute | Accessed: 2026-08-30 -
DCP – Education, Exam, and Training Information
https://portal.ct.gov/dcp/license-services-division/v3-pages/education-exam-and-training-information
Official Board Site | Accessed: 2026-08-30 -
Connecticut Department of Public Health – Environmental Practitioner Licensure
https://portal.ct.gov/dph/environmental-practitioner-licensure-program/environmental-practitioner-licensure-unit/environmental-practitioner-licensure
Official Board Site | Accessed: 2026-08-30 -
Connecticut Department of Public Health – Asbestos Contractors and Consultants
https://portal.ct.gov/dph/asbestos-program/asbestos-program/asbestos-licensure-of-contractors-and-consultants
Official Board Site | Accessed: 2026-08-30 -
Connecticut Department of Public Health – Lead Abatement Contractor License
https://portal.ct.gov/dph/environmental-practitioner-licensure-program/environmental-practitioner-licensure-unit/lead-abatement-contractor
Official Board Site | Accessed: 2026-08-30 -
Connecticut DAS – Apply for a CT Demolition License
https://portal.ct.gov/das/office-of-state-fire-marshal/apply-for-a-ct-demolition-license/apply
Official Board Site | Accessed: 2026-08-30 -
Connecticut DAS – Demolition License Eligibility
https://portal.ct.gov/das/office-of-state-fire-marshal/apply-for-a-ct-demolition-license/eligibility
Official Board Site | Accessed: 2026-08-30
Important Disclaimer
Information Currency: This guide reflects licensing information as available in 2026. Requirements may change without notice; always verify with official sources before applying.
Official Source: For current information, contact Multiple Authorities – See research notes:
- Website: https://portal.ct.gov/dcp
- Phone: 860-713-6100
No Legal Advice: This guide provides general information only. Consult the licensing board or a qualified professional for advice specific to your situation.
Statewide Validity: For Chapter 393 trades, state licenses are valid throughout Connecticut without additional municipal licensing (CGS §20‑338). Local building permits and inspections still apply.