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Massachusetts layers multiple credential types across 6 regulatory bodies. A Construction Supervisor License (CSL) is required for residential and small-building work. Separate state licenses cover electrical, plumbing, and gas fitting. Home improvement contractors must register with the state. Highway contractors face prequalification on contracts over $50,000.
Always verify statutes, fees, and application details with the live regulator before making bidding, licensing, or legal decisions.

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At a glance

The fastest way to orient yourself in Massachusetts is to understand the three main credential layers: the Construction Supervisor License for building work, trade licenses for electrical and plumbing, and highway prequalification for public works.
SignalValue
Construction Supervisor License (CSL)Required for 1-2 family dwellings and buildings up to 35,000 cu ft
Home Improvement Contractor (HIC) registrationRequired for work on existing 1-4 unit owner-occupied dwellings
Highway prequalification triggerNon-building contracts over $50,000
Public works bid bond5% on contracts over $5,000
Certificate of eligibilityRequired for public contracts over $25,000
Written contract requirementAgreements over $1,000 with homeowners must be in writing
Electrical and plumbingState license required for all work
Reciprocity modelElectrical only; New Hampshire

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Frequently asked questions

Pick the tab that matches your situation. Each FAQ gives a direct answer and points you to the full detail below.
A CSL is required for anyone supervising the construction of 1-2 family dwellings or any building up to 35,000 cubic feet. The supervisor on site must hold this license. It requires 3 years of documented experience and an open-book exam on the MA State Building Code with a 70% passing score. See Requirements.
Register with the Office of Consumer Affairs and Business Regulation. The registration fee is $100 (waived if you hold a valid CSL). You must also contribute to a Guaranty Fund ($100 to $500 based on employee count) and carry workers’ compensation insurance. All contracts over $1,000 with homeowners must be in writing. See Requirements.
Massachusetts has 6 separate regulatory bodies. The CSL comes from the Board of Building Regulations & Standards (BBRS). HIC registration goes through the Office of Consumer Affairs. Electrical licensing is through the Board of State Examiners of Electricians. Plumbing and gas fitting are through the Board of State Examiners of Plumbers & Gas Fitters. See Who regulates construction.
The exam fee is $100, the initial license is $150 for a 3-year term, and biennial renewal is $100. Processing takes approximately 30 days. See Requirements.
Class A Master requires 1 year as a Massachusetts Journeyman plus 150 hours of classroom instruction. Class B Journeyman requires 8,000 hours over 4+ years under a Journeyman plus 600 hours of classroom instruction plus a high school diploma. See Requirements.
Reciprocity is very limited. Only electrical licenses (Master and Journeyman) have reciprocity, and only with New Hampshire. Plumbing and gas fitting applicants from other states may petition the Board for equivalency but must still pass the exam. See Reciprocal agreements.
A single residential renovation may require all three: the supervisor holds a CSL, the contractor has HIC registration, and the electrician and plumber hold separate trade licenses. These are issued by different agencies and must be obtained independently. See Construction work regulated.
Prequalification is required for non-building public works contracts over $50,000. There is no application fee. Prequalification is valid for 1 or 3 years. A 5% bid bond is required on public works contracts over $5,000, and a certificate of eligibility is required for contracts over $25,000. See Requirements.
Roofing falls under the CSL system. The CSL includes a Roof Covering classification. If you are supervising roof work on 1-2 family dwellings or buildings up to 35,000 cubic feet, a CSL with the appropriate classification is required. See Types of licenses.
Yes. Building 1-2 family dwellings requires a CSL. Home improvement on existing 1-4 unit owner-occupied dwellings requires HIC registration. Electrical, plumbing, and gas fitting require separate trade licenses regardless of project type. See Construction work regulated.
Journeyman Plumber requires 6,800 hours as a licensed apprentice under a Master Plumber plus 550 hours of plumbing theory. Journeyman Gas Fitter requires 5,100 hours plus 330 hours of gas fitting theory. Out-of-state licensees can petition the Board but must still pass the exam. See Requirements.

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Start with your goal

Pick the card that matches what you need right now. Each one links to the relevant section on this page.

Is licensure triggered?

Start with work type — residential building, home improvement, trades, or public works — to see which credentials apply.

Find the right regulator

Use the regulator directory to route your question to the correct Massachusetts board.

Application and renewal details

Exams, fees, experience hours, education requirements, and renewal cycles for each credential.

Reciprocity direction

Find out which electrical license levels have reciprocity with New Hampshire.

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Special considerations

Different roles need different things from a Massachusetts page. Use the tab that matches your situation to see what matters most before you read the full detail below.
Start by identifying whether your project triggers the CSL, HIC registration, or a trade license — these can overlap. A single residential renovation may require all three.
  • A CSL is required for building 1-2 family dwellings and any building up to 35,000 cubic feet. The supervisor on site must hold this license.
  • Home improvement on existing 1-4 unit owner-occupied dwellings requires HIC registration. The registration fee is $100 (waived if you hold a valid CSL).
  • Electrical work requires a separate state license at the Master, Journeyman, Systems Contractor, or Systems Technician level.
  • Plumbing and gas fitting require separate state licenses with significant experience hour requirements.
  • Highway prequalification is needed for non-building public works contracts over $50,000.
  • All homeowner agreements over $1,000 must be in writing.

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Readiness checklist

Four things you need to confirm before you can treat Massachusetts as “ready” for a bid or an application. If any of these are unclear, you are not ready yet.

Classify the project type

Determine whether the work triggers a CSL (new residential or small building), HIC registration (existing home improvement), trade license (electrical, plumbing, gas), highway prequalification, or asbestos/lead certification. Multiple credentials may apply.

Apply the right threshold tests

Highway prequalification on contracts over $50,000. Public works bid bond of 5% on contracts over $5,000. Certificate of eligibility for contracts over $25,000. Written contracts required on homeowner work over $1,000.

Route to the correct regulator

Massachusetts has 6 regulatory bodies. The CSL comes from BBRS, HIC from Consumer Affairs, and each trade has its own examining board.

Confirm the requirement set

Confirm exams, experience hours, education hours, fees, and renewal cycles for each credential that applies. Massachusetts has detailed classroom instruction requirements for most licenses.
If you can identify all applicable credential tracks, confirm the threshold tests, route to the correct boards, and verify the requirement sets, you have the minimum package needed for a Massachusetts readiness check.
Use these links to jump to related cross-state comparisons and workflows.

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Construction work regulated

Massachusetts uses multiple credential layers that can overlap on the same project. Regulation depends on building type, trade involvement, and contract value.
Work laneWhat triggers regulation
New residential / small building constructionCSL required for 1-2 family dwellings and buildings up to 35,000 cu ft
Home improvement (existing residential)HIC registration required for work on existing 1-4 unit owner-occupied dwellings
ElectricalState license required for all electrical work
Plumbing and gas fittingState license required for all plumbing and gas fitting work
Highway / non-building public worksPrequalification required on contracts over $50,000
Public works (general)Bid bond of 5% required on contracts over $5,000; certificate of eligibility required over $25,000
Asbestos and lead abatementState license required through Department of Labor Standards
A single residential renovation project may require the supervisor to hold a CSL, the contractor to have HIC registration, and the electrician and plumber to hold separate trade licenses. These credentials are issued by different agencies and must be obtained independently.

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Common determination scenarios

If you are trying to figure out where to start, expand the scenario that is closest to your situation.
A Construction Supervisor License is required. The supervisor needs 3 years of documented experience and must pass an open-book exam on the state building code (70% passing score). Exam fee is $100; initial license is $150 for a 3-year term. Trade licenses for electrical and plumbing are also required for those work components.
HIC registration is needed. The initial guaranty fund contribution ranges from $100 to $500 based on number of employees. All contracts over $1,000 must be in writing. Workers’ compensation insurance is required. A CSL may also be required if the work involves structural changes. Check whether electrical or plumbing trade licenses apply.
Route to the Board of State Examiners of Electricians. Class A Master requires 1 year as a Massachusetts Journeyman plus 150 hours classroom instruction. Class B Journeyman requires 8,000 hours over 4+ years under a Journeyman plus 600 hours classroom plus a high school diploma. Check reciprocity if licensed in New Hampshire.
Route to the Board of State Examiners of Plumbers & Gas Fitters. Journeyman Plumber requires 6,800 hours as an apprentice under a Master plus 550 hours of plumbing theory. Journeyman Gas Fitter requires 5,100 hours plus 330 hours of gas fitting theory. Out-of-state licensees can petition the board for equivalency but must still pass the exam.
Route to the Highway Division for prequalification on contracts over $50,000. No application fee. Prequalification is valid for 1 or 3 years. Contract limits are based on technical expertise and bonding capacity. Processing takes approximately 2 weeks.

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Who regulates construction

Massachusetts splits construction regulation across 6 regulatory bodies. Use this directory to find the board that owns the lane you need.
Director of Prequalification, 10 Park Plaza, Room 3620, Boston, MA 02116Phone: (857) 368-8660 | Fax: (857) 368-0643Website: mass.gov/orgs/highway-division
Department of Public Safety, One Federal Street, Suite 600, Boston, MA 02110Phone: (617) 727-3200Website: mass.gov/orgs/office-of-public-safety-and-inspections
One Federal Street, Suite 720, Boston, MA 02110Phone: (617) 973-8787Website: mass.gov/orgs/office-of-consumer-affairs-and-business-regulation
One Federal Street, Suite 600, Boston, MA 02110Phone: (617) 701-8786 | Fax: (617) 701-8652Website: mass.gov/orgs/board-of-state-examiners-of-electricians
One Federal Street, Suite 600, Boston, MA 02110Phone: (617) 701-8798 | Fax: (617) 701-8652Website: mass.gov/orgs/board-of-state-examiners-of-plumbers-and-gas-fitters
Executive Office of Labor and Workforce Development, 100 Cambridge Street, 5th Floor, Boston, MA 02114Phone: (617) 626-6975Website: mass.gov/DOLS

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Requirements

Each Massachusetts credential has its own application inputs, exams, fees, and renewal cycles. Expand the category that applies to your situation.

Construction Supervisor License (CSL)

RequirementDetail
ExamOpen-book exam on the MA State Building Code; passing score of 70%
Experience3 years documented construction experience
Exam fee$100
Initial license$150 (3-year term)
Biennial renewal$100
Processing timeApproximately 30 days
RequirementDetail
Registration fee$100 (waived if registrant holds a valid CSL)
Guaranty Fund contribution$100 to $500 initial, based on number of employees; reassessment possible if fund is insufficient
Fund limits$10,000 per individual claim; $75,000 per contractor
Written contractsRequired for all homeowner work over $1,000
Workers’ compensationRequired
RenewalRegistration fee of $100 at renewal
The HIC Guaranty Fund is a consumer protection mechanism. If the administrator determines the fund balance is insufficient to cover claims, registrants may face reassessment.
All exam applicants must meet both work experience and education requirements set by the Board.
License classExperienceEducation
Class A — Master1 year as a MA Class B Journeyman, actively engaged in electrical work150 hours classroom instruction
Class B — Journeyman8,000 hours over 4+ years under a Journeyman600 hours classroom (225 required + 45 NEC + 351 elective) + high school diploma
Class C — Systems Contractor1 year as a MA Class D Systems Technician, actively engaged in systems work75 hours classroom instruction
Class D — Systems Technician4,000 hours over 2+ years under a Systems Technician300 hours education + high school diploma
Alternative paths exist for graduates of accredited electrical programs, community college programs, and registered apprenticeships. These may reduce the experience hour requirement.
License typeExperienceEducation
Journeyman Plumber6,800 hours as a licensed apprentice under a Master Plumber550 hours plumbing theory
Journeyman Gas Fitter5,100 hours as a licensed apprentice under a Master Gas Fitter330 hours gas fitting theory
LP Gas Installer3,400 hours over 2+ years in LP gas installations under a licensed installer, journeyman, or master220 hours LP gas educational theory
Limited LP Gas Installer1,700 hours construction experience with supervised observation of LP gas cylinder installationN/A
Out-of-state or international licensees may petition the Board for equivalency consideration. Unless Massachusetts has a reciprocity agreement with the jurisdiction, all applicants must pass the relevant examination.
Asbestos and deleading work requires licensing through the Department of Labor Standards. Multiple license types exist for contractors, supervisors, workers, inspectors, and consultants.
RequirementDetail
Asbestos contractorMust be a certified firm, corporation, or business entity performing abatement
Asbestos supervisorLicensed individual with managerial authority and responsibility for response action completion
Deleading contractorRequired for all deleading work (Class I projects); Lead-Safe Renovation Contractor license available for Moderate-Risk work
Deleading supervisorMust be on site and in control of every Class I Deleading Project
Project monitorMust be independent of the contractor performing the work; contracted directly by the facility owner
RequirementDetail
Application feeNone
Validity1 year or 3 years at the discretion of the Highway Division; must also prequalify for individual projects before bidding
Contract limitsBased on technical expertise and bonding capacity
CategoriesBridge, highway, paving, marine construction, buildings, traffic signals and lighting
Processing timeApproximately 2 weeks
Public works contracts over $5,000 require a 5% bid bond. A certificate of eligibility from the Commissioner of Labor and Industries is required for contracts over $25,000.

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Reciprocal agreements

Massachusetts has limited reciprocity. Only electrical licenses carry a reciprocal agreement, and only with New Hampshire. All other trades require applicants to meet Massachusetts requirements independently.
Reciprocity in Massachusetts is narrow. Only electrical licenses (Master and Journeyman) are covered, and only with New Hampshire. Plumbing and gas fitting applicants from other states may petition for equivalency but must still pass the exam.
BoardReciprocal statesCoverage
Board of Electricians (Master and Journeyman)New Hampshire1 state

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Types of licenses

This section lists the credential categories Massachusetts offers across its regulatory bodies. Use it when you need to confirm the exact license name for an application or comparison.
  • 1 & 2 Family Dwellings
  • Masonry
  • Roof Covering
  • Windows, Door, Siding
  • Solid Fuel-Burning Appliance
  • Demolition
  • Insulation
  • Class A — Master Electrician
  • Class B — Journeyman Electrician
  • Class C — Systems Contractor
  • Class D — Systems Technician
  • Electrical/Systems Business License
  • Master Plumber
  • Journeyman Plumber
  • Apprentice Plumber
  • Plumbing Corporation or Partnership
  • Plumbing Inspector (Journeyman or Master)
  • Master Gas Fitter
  • Journeyman Gas Fitter
  • Apprentice Gas Fitter
  • Gasfitting Corporation or Partnership
  • Gasfitting Inspector (Journeyman or Master)
  • Liquefied Petroleum Gas Installer
  • Limited Liquefied Petroleum Gas Installer
  • Asbestos Contractor
  • Asbestos Supervisor
  • Asbestos Worker
  • Asbestos Inspector
  • Asbestos Management Planner
  • Asbestos Project Designer
  • Asbestos Project Monitor
  • Deleading Contractor
  • Deleader-Supervisor
  • Deleader-Worker
  • Lead-Safe Renovation Contractor
  • Lead-Safe Renovator-Supervisor
  • Bridge — Construction, Culverts, Deck Repairs, Joints
  • Highway — Construction, Bike Paths, Sidewalk and Curbing, Lighting
  • Pavement — Surfacing, Milling and Cold Planing, Reclamation, Markings
  • Traffic Signals and Intelligent Transportation Systems
  • Electrical — All Types (Including Maintenance)
  • Marine Construction and Dredging
  • Sewer and Water
  • Guard Rail and Fencing
  • Signing — Structural and Non-Structural
  • Demolition
  • Landscaping and Tree Planting
  • Hazardous Waste Remediation and Transportation
  • Dam Construction
  • Pump Stations
  • Salt Marsh and Wetland Restoration

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See also

Northeast region guide

Browse all Northeast jurisdictions for comparison.

Contractors guide

Cross-state guidance for contractors evaluating new jurisdictions.

Regulators guide

Cross-state guidance for comparing regulatory models and agency structures.
Neighboring jurisdictions with reciprocity ties:

New Hampshire

Electrical reciprocity with Massachusetts for both Master and Journeyman licenses.