New Hampshire Contractor Licenses: Updated Requirements Guide
New Hampshire regulates most contractor trades at the state level through dedicated licensing boards and health or environmental programs. Electricians, plumbers, and mechanical (HVAC) contractors are overseen centrally, while certain specialty activities such as lead abatement and well construction are handled by public health and environmental agencies. For residential improvement work, the state requires registration for home improvement contractors.
Because these programs live under different state agencies, the first step is identifying which board controls your trade and project scope. From there, you’ll schedule any required examinations, assemble proof of experience, secure insurance, and apply online when available. We highlight several representative licenses and authorities for New Hampshire below; this guide is updated periodically as additional jurisdictions are researched or requested.
Throughout the guide you’ll also find exam-prep options. These are PDF study resources built around the New Hampshire testing outlines with detailed answer keys and code reference locators, allowing you to study efficiently and offline at your own pace.
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Overview of New Hampshire Contractor Licensing
New Hampshire’s contractor licensing is centralized at the state level. The Office of Professional Licensure and Certification (OPLC) regulates core construction trades including electricians, plumbers, mechanical/HVAC contractors, and Home Improvement Contractor registration. OPLC also serves as the primary intake portal for applications and online services.
Some specialized activities fall under different state programs. The NH Department of Environmental Services (NHDES) regulates well drilling and related groundwater work, while the Division of Public Health Services (DPHS) oversees lead abatement credentials through its Healthy Homes and Lead Poisoning Prevention Program. The State Fire Marshal’s Office provides statewide fire and life safety oversight that interfaces with certain mechanical system work and permitting.
Most trade examinations are administered by PSI under agreements with the appropriate board. Candidates generally document experience or education, meet insurance requirements, and then apply for licensure or registration. Building permits are handled by city or town building departments; even with a state license, you must secure local permits before starting work.
Electrician Licenses in New Hampshire
New Hampshire regulates electrical work with 2 license types.
Master Electrician License
Regulatory Authority: Office of Professional Licensure and Certification – Electrician’s Board (https://www.oplc.nh.gov/)
Eligibility and Requirements
- Experience: 2–4 years of qualifying electrical experience.
- Examination: Required through PSI.
Fees
- Application: $350
- Examination: $120
Insurance
- Liability insurance required (General Liability).
Contact the Electrician’s Board at OPLC to confirm renewal cycle, continuing education requirements, and any additional documentation before applying. Reference: Electrical Board – OPLC.
Exam Prep: Prepare with the New Hampshire Electrical Re-Licensing Practice Test. PDF study guides typically include 1,500–2,500 questions, answer keys, and reference locators pointing to exact code sections. Study offline at your own pace with no time or use limits.
Journeyman Electrician License
Regulatory Authority: Office of Professional Licensure and Certification – Electrician’s Board (https://www.oplc.nh.gov/)
Eligibility and Requirements
- Experience: 2–4 years of qualifying electrical experience or apprenticeship.
- Examination: Required through PSI.
Fees
- Application: $250
- Examination: $85
Insurance
- Employer liability required (Workers’ Compensation) when applicable to employment status.
Contact the Electrician’s Board at OPLC to confirm renewal cycle, continuing education requirements, and any additional documentation before applying. Reference: Electrical Board – OPLC.
Exam Prep: Browse New Hampshire contractor license practice tests and study material. PDF study guides typically include 1,500–2,500 questions with answer keys and code reference locators. Study offline at your own pace with no time or use limits.
Planning to sit for an electrical exam soon? You can browse New Hampshire contractor license practice tests and study material to get started quickly.
Plumbing Licenses in New Hampshire
New Hampshire regulates plumbing work with 2 license types.
Master Plumber License
Regulatory Authority: OPLC – Mechanical Safety and Licensing Board (https://www.oplc.nh.gov/)
Eligibility and Requirements
- Experience: 4 years verified experience.
- Examination: Required through PSI.
Fees
- Application: $310
- Verification processing: $10
Insurance
- Liability insurance required (General Liability).
Contact the Mechanical Safety and Licensing Board at OPLC to confirm renewal cycle, any continuing education obligations, and documentation specifics. Reference: Mechanical Board – OPLC.
Exam Prep: Need study materials? Browse New Hampshire contractor license practice tests and study material. PDF study guides typically include 1,500–2,500 questions with answer keys and reference locators to the exact code sections. Study offline with no time or use limits.
Journeyman Plumber License
Regulatory Authority: OPLC – Mechanical Safety and Licensing Board (https://www.oplc.nh.gov/)
Eligibility and Requirements
- Experience: 2–4 years of qualifying plumbing experience or apprenticeship.
- Examination: Required through PSI.
Fees
- Application: $250
- Examination: $120
Contact the Mechanical Safety and Licensing Board at OPLC to confirm insurance minimums, renewal cycle, continuing education, and any additional documentation. Reference: Mechanical Board – OPLC.
Exam Prep: Prepare effectively with curated PDFs. Browse New Hampshire contractor license practice tests and study material featuring 1,500–2,500 questions, answer keys, and code reference locators. Download and study offline with no time or use limits.
For plumbing candidates planning multiple endorsements or retakes, it helps to map exam topics to your field experience. You can browse New Hampshire contractor license practice tests and study material to focus your prep.
HVAC Licenses in New Hampshire
New Hampshire regulates HVAC contractors with 1 license type.
Mechanical Contractor License
Regulatory Authority: OPLC – Mechanical Safety and Licensing Board (https://www.oplc.nh.gov/)
Eligibility and Requirements
- Experience: 2–4 years of qualifying mechanical/HVAC experience.
- Examination: Required through PSI.
Fees
- Application: $350
- Examination: $120
Contact the Mechanical Safety and Licensing Board at OPLC to confirm insurance minimums, renewal cycle, continuing education, and application documentation. Reference: Mechanical Board – OPLC.
Exam Prep: Target your HVAC success with PDFs that include 1,500–2,500 questions, full answer keys, and reference locators to code sections. Browse New Hampshire contractor license practice tests and study material. Study offline with no time or use limits.
Coordinating with local building officials on permit sequencing can shorten your project timeline once you hold the Mechanical Contractor license. When you’re ready to prepare, browse New Hampshire contractor license practice tests and study material for code-focused study support.
General Contractor Licenses in New Hampshire
New Hampshire general contractor licensing includes 1 type.
Home Improvement Contractor Registration
Regulatory Authority: Office of Professional Licensure and Certification (https://www.oplc.nh.gov/)
Scope
- Registration typically applies to residential home improvement work at or above the state’s monetary threshold for covered projects.
Eligibility and Requirements
- No examination required.
- Insurance: General Liability with a minimum of $1,000,000 per occurrence.
Fees
- Registration: $150
Contact OPLC to confirm current thresholds, renewal cycle, and documentation requirements for registration. Reference: Home Improvement – OPLC.
Study Support: Estimating, contracts, and code coordination are common knowledge areas for home improvement firms. Browse New Hampshire contractor license practice tests and study material for code-oriented refreshers and reference locators you can use offline.
For larger residential projects, confirm whether any specialty trade work (electrical, plumbing, mechanical) must be subcontracted to state-licensed trades. To build your code fluency and documentation skills, browse New Hampshire contractor license practice tests and study material.
Roofing Licenses in New Hampshire
New Hampshire does not issue a separate statewide roofing contractor license. Roofing firms performing residential home improvement work should review the state’s Home Improvement Contractor registration and secure applicable building permits before work begins.
Exam Prep: Interested in code-focused study for roofing-related scopes? Browse New Hampshire contractor license practice tests and study material. PDF study guides typically include 1,500–2,500 questions with answer keys and code reference locators. Study offline at your own pace with no time or use limits.
Specialty Trade Licenses in New Hampshire
New Hampshire regulates specialty trades with 2 license types.
Lead Abatement Specialist License
Regulatory Authority: Division of Public Health Services – Healthy Homes and Lead Poisoning Prevention Program (https://www.dhhs.nh.gov/programs-services/environmental-health-and-you/lead-poisoning-prevention-program)
Eligibility and Requirements
- Examination: Required. Exam provider: Contact licensing board to verify exam provider.
Contact the Healthy Homes and Lead Poisoning Prevention Program to confirm application fees, insurance minimums, experience documentation, training prerequisites, renewal cycle, and any continuing education requirements. Reference: DPHS – Lead Program.
Study Support: For code- and safety-oriented refreshers that complement approved training, browse New Hampshire contractor license practice tests and study material. PDFs typically include 1,500–2,500 questions, answer keys, and reference locators, with offline access and no time or use limits.
Well Driller License
Regulatory Authority: NH Department of Environmental Services (NHDES) (https://www.des.nh.gov/)
Eligibility and Requirements
- Examination: Required. Exam provider: Contact licensing board to verify exam provider.
Contact NHDES to confirm application fees, insurance requirements, experience verification, renewal schedule, and any continuing education. Reference: NHDES.
Study Support: Reinforce your technical knowledge with code-referenced PDFs. Browse New Hampshire contractor license practice tests and study material. Each includes 1,500–2,500 questions, answer keys, and reference locators for efficient offline study with no time or use limits.
To prepare for specialty applications, organize your training certificates, experience logs, and insurance documents early. When you’re ready to tune up your code knowledge, you can browse New Hampshire contractor license practice tests and study material.
Application Process
- Determine if you need home builder registration or trade license
- Pass applicable exam via PSI
- Obtain required insurance
- Apply to OPLC online
- Register with local municipality for permits
Timeline: 4-8 weeks after submission
Reciprocity
Overview: New Hampshire considers reciprocity or endorsement when another state’s standards are substantially equivalent. Decisions are made by the appropriate board based on verified credentials.
Requirements: Provide verified work experience, official license verification from the issuing state, and proof of required liability insurance. Additional education or examinations may be assigned if standards are not substantially equivalent. Reciprocity is not available for every license type.
Frequently Asked Questions
How long does it take to get a contractor license in New Hampshire?
Typical processing is 4–8 weeks after submission, assuming your application is complete and you have passed any required exams.
Can I transfer my license from another state to New Hampshire?
New Hampshire reviews out-of-state licenses for reciprocity or endorsement when your home state’s standards are substantially equivalent. Expect to submit official license verification, experience documentation, and proof of liability insurance. You may need to meet New Hampshire education or exam requirements if equivalency is not established.
What happens if I fail the exam?
Retake policies and waiting periods are set by the exam provider. For electrical, plumbing, and mechanical/HVAC candidates, contact PSI Exams – New Hampshire for current retest procedures and fees.
Do I need insurance?
Yes. Insurance requirements vary by license. Examples include General Liability for Master Electrician and Master Plumber licenses and a $1,000,000 per occurrence General Liability requirement for Home Improvement Contractor registration. Journeyman electricians may also need employer Workers’ Compensation coverage depending on employment status.
How do I renew my license?
Renewal schedules and continuing education vary by board and license type. Review your board’s page at OPLC or the appropriate specialty program (DPHS or NHDES) for current renewal steps, fees, and CE requirements.
Where can I find practice tests for New Hampshire exams?
We offer comprehensive PDF practice tests for New Hampshire contractor license exams. Each set typically contains 1,500–2,500 code-relevant questions with precise answer keys and reference locators showing exact code sections. Browse New Hampshire contractor practice tests.
What agencies regulate specialty activities like well drilling or lead abatement?
Well drilling is regulated by the NH Department of Environmental Services and lead abatement credentials are administered by the Division of Public Health Services – Lead Program. Review those program pages for application forms, training requirements, and renewal procedures.
How should I study for a New Hampshire trade exam?
Start with the official candidate bulletin and code list, then use code-referenced practice materials to build speed and accuracy. Our PDFs are designed for offline use and include 1,500–2,500 questions, complete answer keys, and reference locators. Browse New Hampshire contractor license practice tests and study material.
Related Official Resources
Official Sources for Further Details:
- Office of Professional Licensure and Certification
https://www.oplc.nh.gov/
Official Board Site | Accessed: 2026-05-17 - Office of Professional Licensure and Certification
https://www.oplc.nh.gov/find-board/electricians-board
Official Board Site | Accessed: 2026-05-17 - Office of Professional Licensure and Certification
https://www.oplc.nh.gov/mechanical-safety-and-licensing-board
Official Board Site | Accessed: 2026-05-17 - Office of Professional Licensure and Certification
https://www.oplc.nh.gov/professional-licensing
Official Board Site | Accessed: 2026-05-17 - PSI Exams
https://www.psiexams.com/NH
Exam Provider | Accessed: 2026-05-17 - Division of Public Health Services
https://www.dhhs.nh.gov/programs-services/environmental-health-and-you/lead-poisoning-prevention-program
Official Board Site | Accessed: 2026-05-17 - NH Department of Environmental Services
https://www.des.nh.gov/
Official Board Site | Accessed: 2026-05-17 - New Hampshire Office of Professional Licensure and Certification
https://www.oplc.nh.gov/
State Statute | Accessed: 2026-05-17
Important Disclaimer
Information Currency: This guide reflects licensing information as available in 2026. Licensing requirements are subject to change without notice. Always verify current requirements with official sources.
Official Source: For current information, contact Multiple Authorities – See research notes:
- Website: https://www.oplc.nh.gov/
- Phone: 603-271-2160
No Legal Advice: This guide provides general information only. Consult with the licensing board or a qualified professional for guidance specific to your situation.