Maryland Contractor Licenses: Updated Requirements Guide
Maryland regulates core construction trades at the state level. Electricians, plumbers, and HVACR professionals are licensed through the Maryland Department of Labor, while residential home improvement contractors are licensed by the Maryland Home Improvement Commission (MHIC). Understanding which state board regulates your trade, the minimum experience required, and the exam you must pass will help you plan a smooth path to licensure.
This guide spotlights several representative licenses and authorities for Maryland; we update it periodically to reflect verified state criteria and helpful exam preparation resources. You will also find links to official state pages to confirm current requirements before you apply.
If you are preparing for an exam, targeted study materials can save significant time. The exam-prep resources linked throughout this guide are PDF-based and include large question banks with answer keys and code reference locators so you can study offline at your own pace with no time or use limits.
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Overview of Maryland Contractor Licensing
Contractor licensing in Maryland is administered by multiple state boards within the Maryland Department of Labor. Residential home improvement contractors are licensed by the Maryland Home Improvement Commission (MHIC). Electricians are overseen by the Board of Master Electricians, and plumbing and HVACR licensing is administered through the Department’s licensing divisions.
MHIC regulates residential home improvement work on properties with one to three dwelling units, including additions, alterations, remodeling, and repairs. The Board of Master Electricians regulates the statewide Master Electrician credential, and the Department manages tiered pathways for plumbers and HVACR professionals.
Because these programs are state-level, a license issued by the appropriate Maryland board authorizes practice statewide, subject to local permitting and inspection processes for individual projects. Use the official Maryland Department of Labor site and MHIC pages to verify current forms, fees, and application procedures before submitting your application.
Electrician Licenses in Maryland
Maryland regulates electrical work with 1 license type.
Master Electrician (Statewide)
Regulatory Authority: Board of Master Electricians (Maryland Department of Labor, Licensing and Regulation) — https://labor.maryland.gov/license/
Eligibility & Experience
- Experience: Seven years of experience in electrical work on all types of electrical equipment. Up to three years may be substituted with formal coursework or professional training in electrical installation.
- Supervision: Experience must be under the supervision of a master electrician or a similarly qualified employee of a governmental unit.
Examination
- Exam Provider: PSI Exams (schedule via psiexams.com)
- Format: Written examination
- Length: 90 questions, 4 hours
- Passing Score: 70%
- Exam Fee: $65
- PSI Candidate Support: 1-800-733-9267
Fees
- Examination Fee: $65
Exam Prep (PDF): Prepare with large-format study guides designed for Maryland’s Master Electrician exam:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
Before scheduling your exam, confirm current application forms and any additional documentation with the Maryland Department of Labor. For exam logistics and test center availability, use PSI’s candidate portal.
For statewide electrician licensing updates or to verify your application status, visit the Department’s licensing portal. When you’re ready to study, you can browse Maryland contractor license practice tests and study material.
Plumbing Licenses in Maryland
Maryland regulates plumbing work with 2 license types.
Master Plumber (Statewide)
Regulatory Authority: Maryland Department of Labor, Licensing and Regulation — https://labor.maryland.gov/license/
Eligibility & Experience
- Hold a journeyman-level license for at least two years
- Complete at least 3,750 hours of training under the direction of a licensed master plumber
Examination
- Written examination required
Contact the Maryland Department of Labor, Licensing and Regulation to confirm exam provider, fees, insurance minimums, and renewal details before applying.
Exam Prep (PDF): Focus your studying on code mastery and problem types commonly tested for Maryland plumbing licenses:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
Journeyman Plumber (Statewide)
Regulatory Authority: Maryland Department of Labor, Licensing and Regulation — https://labor.maryland.gov/license/
Eligibility & Experience
- Hold an apprentice license for at least four years
- Complete 7,500 hours of training under a master plumber
Education & Examination
- Complete a 32-hour course in backflow prevention
- Pass a written examination
Contact the Maryland Department of Labor, Licensing and Regulation to confirm exam provider, fees, insurance minimums, and renewal details before applying.
Exam Prep (PDF): Reinforce journeyman-level competencies across code, fixtures, piping, safety, and backflow topics:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
Keep documentation of apprenticeship hours, training certificates, and supervisor verification ready for your application. For additional study support across plumbing classifications, browse Maryland contractor license practice tests and study material.
HVAC Licenses in Maryland
Maryland regulates HVAC contractors with 3 license types.
Master HVACR License (Statewide)
Regulatory Authority: Maryland Department of Labor, Licensing and Regulation — https://labor.maryland.gov/license/
General Notes
- Examination is required
Contact the Maryland Department of Labor, Licensing and Regulation to confirm fees, insurance minimums, experience requirements, examination provider, and renewal details before applying.
Exam Prep (PDF): Designed for Maryland HVACR exams with deep coverage of load calculations, duct design, refrigeration, fuel gas, and code:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
Journeyman HVACR License (Statewide)
Regulatory Authority: Maryland Department of Labor, Licensing and Regulation — https://labor.maryland.gov/license/
General Notes
- Examination is required
Contact the Maryland Department of Labor, Licensing and Regulation to confirm fees, insurance minimums, experience requirements, examination provider, and renewal details before applying.
Exam Prep (PDF): Practice questions emphasize journeyman-level installation, service, and safety topics aligned to Maryland’s code framework:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
Limited HVACR License (Statewide)
Regulatory Authority: Maryland Department of Labor, Licensing and Regulation — https://labor.maryland.gov/license/
General Notes
- Examination is required
Contact the Maryland Department of Labor, Licensing and Regulation to confirm fees, insurance minimums, experience requirements, examination provider, and renewal details before applying.
Exam Prep (PDF): Build confidence for limited-scope HVACR content with targeted code and calculations practice:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
Keep records of your work experience, supervisor details, and insurance documentation to streamline your HVACR application. For study support across HVACR classifications, browse Maryland contractor license practice tests and study material.
General Contractor Licenses in Maryland
Maryland general contractor licensing includes 1 type.
Home Improvement Contractor License (MHIC) — Residential
Regulatory Authority: Maryland Home Improvement Commission (MHIC) — https://labor.maryland.gov/license/mhic/
Scope of Work
Applies to home improvement work on residential properties with one to three dwelling units. Typical activities include additions, alterations, conversions, improvements, modernization, remodeling, repair, and replacement of buildings designed as residences.
Eligibility & Experience
- Two years of experience in home improvement, construction, or relevant education
- Experience may include hands-on work, state-approved education, or apprenticeships
Financial Responsibility
- Minimum Net Worth: $20,000 (alternatively, a $20,000 surety bond option is available)
- Insurance: General liability insurance required; $50,000–$500,000 depending on work type. The certificate must list MHIC as Certificate Holder.
- Credit Report: A current credit report not more than 90 days old is required.
Fees
- Examination: $63
- Application: $370
- Original Application Fee: $250
- Additional Location Fee: $250
- Guaranty Fund: $100
- Processing: $20
Examination
- Provider: PSI Exams (schedule via psiexams.com)
- Format: Written examination
- Passing Score: 70%
- PSI Candidate Support: 1-800-367-1565
Application & Mailing
- Online Application: Apply for an original MHIC license
- Mailing Address: Maryland Home Improvement Commission, PO Box 17409, Baltimore, Maryland 21297-1409
Processing Notes
- All entities entering into contracts with homeowners or subcontractors for home improvement work must hold an MHIC contractor license.
- The separate subcontractor licensing category was eliminated on July 1, 2016. Subcontractors may work for MHIC-licensed contractors without a separate license.
Exam Prep (PDF): Streamline your MHIC exam preparation with code-focused practice:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
If you build new homes, review the state’s separate home builder registration requirements to determine whether your business must register with the Home Builder Registration Unit. For remodeling and repair work on one- to three-unit residences, MHIC licensure is the required pathway.
Roofing Licenses in Maryland
Residential roofing work is commonly performed under the MHIC Home Improvement Contractor license scope when it involves repair, replacement, or improvement of roofs on one- to three-family dwellings. Review your project details with MHIC to ensure the correct classification before bidding or contracting.
Exam Prep (PDF): Preparing for MHIC or related trade exams that cover roofing topics?
- PDF study guides typically with 1,500–2,500 questions
- Answer keys and exact code reference locators
- Immediate download; offline study with no time or use limits
Browse Maryland contractor license practice tests and study material
For residential roofing within MHIC scope, confirm current insurance minimums and documentation requirements directly with MHIC. When you are ready to study, browse Maryland contractor license practice tests and study material.
Specialty Trade Licenses in Maryland
Specialty trades such as well drilling, solar installation, fire protection, or other niche scopes may be regulated by dedicated programs within the Maryland Department of Labor or other state entities. Requirements can include specific experience thresholds, trade exams, and insurance documentation.
For any specialty not listed in this guide, consult the Maryland Department of Labor’s licensing directory to identify the correct board or unit and confirm current application requirements, fees, and renewal timelines.
Exam Prep (PDF): If your specialty requires a state exam, comprehensive practice materials can help you prepare efficiently:
- PDF study guides typically with 1,500–2,500 questions
- Answer keys for every question
- Reference locators pointing to exact code sections
- Immediate download; study offline at your own pace; no time or use limits
Browse Maryland contractor license practice tests and study material
Not sure which specialty board regulates your scope? Start with the Department’s main licensing portal and filter by trade category. For exam preparation across Maryland licenses, browse Maryland contractor license practice tests and study material.
Application Process
- Register business name with Maryland Department of Assessments and Taxation (410-767-1330
- Obtain federal tax ID number from IRS
- Apply for Maryland Tax Accounts and Insurance registration
- Pass MHIC examination administered by PSI
- Gather financial documents including credit report, bank statements, real estate assessments
- Demonstrate financial solvency or obtain surety bond
- Obtain general liability insurance certificate ($50,000-$500,000 depending on work type)
- Submit application package to MHIC with photo and payment
- Receive license application package after passing exam
- Receive license by mail after approval (typically 10 days after approval)
Timeline: Two to three weeks for approval; license arrives within 10 days after approval
Online Application: MHIC online application and instructions are available at https://labor.maryland.gov/license/mhic/mhicapply.shtml.
Required Documents (MHIC): Be ready to provide a current credit report (within 90 days), certificate of liability insurance, financial statements or bank statements verifying net worth, surety bond form (if applicable), real estate/property assessment notices (if applicable), criminal record disclosures (as specified), and company formation documents (e.g., articles of incorporation, certificate of good standing, trade name certificate, if applicable).
Processing Notes: Entities contracting directly with homeowners for residential home improvement must be licensed by MHIC. The separate subcontractor category was removed as of July 1, 2016; subcontractors may perform work for MHIC-licensed contractors without a separate subcontractor license.
As you plan your exam date, allocate time to refresh on code references and state-specific topics. For focused preparation, browse Maryland contractor license practice tests and study material.
Frequently Asked Questions
How long does it take to get a contractor license in Maryland?
Two to three weeks for approval is typical; the license generally arrives within 10 days after approval. Processing time can vary based on application completeness and exam scheduling.
Can I transfer my license from another state to Maryland?
Reciprocity and endorsement options depend on the board and license type. Confirm with MHIC or the Maryland Department of Labor whether any reciprocity, waiver, or equivalency options are currently available for your trade.
What happens if I fail the exam?
Retake policies are administered by the exam provider and the licensing board for your trade. Review the PSI candidate information (for MHIC and Master Electrician) or the Department’s licensing pages for current retake rules and any waiting periods.
Do I need insurance?
Yes. MHIC requires general liability insurance (typically between $50,000 and $500,000, depending on work type) and the certificate must list MHIC as Certificate Holder. Other trades may have different insurance minimums; verify with the Department for your license.
How do I renew my license?
Renewal schedules and fees vary by license. Check your renewal window, continuing obligations (if any), and payment instructions on the MHIC and Maryland Department of Labor licensing pages before your expiration date.
Does Maryland regulate new home construction the same way as home improvement?
No. Home improvement for one- to three-family residences is regulated under MHIC. New home construction is handled through a separate state registration framework for home builders; review the Maryland Department of Labor site to determine whether your business must register.
Where can I find practice tests for Maryland exams?
PDF-based practice tests are available for Maryland licenses and typically include 1,500–2,500 questions with detailed answer keys and code reference locators. Materials are downloadable for offline study with no time or use limits. Browse Maryland contractor practice tests.
Which board should I contact for my trade?
Home improvement contractors: MHIC. Master Electricians: Board of Master Electricians under the Department of Labor. Plumbing and HVACR: Maryland Department of Labor licensing divisions. The Department’s main portal is https://labor.maryland.gov/license/.
Any study tips for first-time test takers?
Study the exact code editions referenced by your exam outline, practice timed sets on your own schedule, and use reference locators to learn where topics live in the code. When you are ready, browse Maryland contractor license practice tests and study material.
Related Official Resources
Official Sources for Further Details:
-
Maryland Home Improvement Commission (MHIC)
https://labor.maryland.gov/license/mhic/
Official State Board Site | Accessed: 2026-05-08 -
Maryland Home Improvement Commission – Apply for Original License
https://labor.maryland.gov/license/mhic/mhicapply.shtml
Official State Board Site | Accessed: 2026-05-08 -
Maryland OneStop – Home Improvement License Details
https://onestop.md.gov/licenses/home-improvement-license-5d15409d54f24d03e9997ba5
Official State Portal | Accessed: 2026-05-08 -
Maryland Home Improvement Commission – Licensing Information
https://labor.maryland.gov/license/mhic/mhiclic.shtml
Official State Board Site | Accessed: 2026-05-08 -
Maryland Department of Labor, Licensing and Regulation
https://labor.maryland.gov/license/
Official State Department Site | Accessed: 2026-05-08 -
PSI Exams – Examination Services
https://www.psiexams.com
Official Exam Provider Site | Accessed: 2026-05-08
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 – Maryland Home Improvement Commission, Board of Master Electricians, Maryland Department of Labor Licensing and Regulation:
- Website: https://labor.maryland.gov
- Phone: 410-767-1330
No Legal Advice: This guide provides general information only. Consult with the licensing board or a qualified professional for guidance specific to your situation.
Scope: Residential home improvement work is licensed by MHIC. Electrician, plumbing, and HVACR credentials are administered through the Maryland Department of Labor.