Unrestricted CSL
Scope: Structures up to 35,000 cu ft & 3 stories
Testing: 75-question exam covering 780 CMR (Massachusetts Building Code), energy code, OSHA, and business law
Massachusetts Contractor License Exam Guide (2026)
Nor'easters slam Cape Cod dunes, Boston rowhouses face 70-inch nor'easter snow loads, and western counties battle seismic reinforcements. The Board of Building Regulations and Standards (BBRS) and the Office of Consumer Affairs require contractors to master the Massachusetts Building Code and Home Improvement Contractor (HIC) statutes.
Last verified: June 2026 via Massachusetts Office of Consumer Affairs & Business Regulation (OCABR). Official source: Massachusetts Board of Building Regulations and Standards (CSL).
- Construction Supervisor LicenseCSL exam
- 75 QuestionsPrometric exam
- 6 Hours CEAnnual HIC requirement
How Massachusetts licenses contractors
The BBRS issues Construction Supervisor Licenses (CSL) for structural work, while OCABR registers Home Improvement Contractors (HIC). Prometric (prometric.com/massachusetts) delivers the CSL exam.
Massachusetts contractors design for 110-mph coastal winds, 70 psf snow loads, salt spray corrosion, and freeze–thaw cycles. Exams highlight vapor control, energy code, and coastal flood-resistant design.
Official source: Massachusetts Board of Building Regulations and Standards (CSL)
Massachusetts licensing at a glance
- Construction Supervisor License — CSL exam
- 75 Questions — Prometric exam
- Typical cost: $150 CSL exam fee + $150 initial license
- State-specific trade exam required (NASCLA not accepted for primary licensing path)
- Common license path: Unrestricted CSL
Massachusetts contractor license types
Restricted CSL
Scope: One- and two-family dwellings
Testing: Similar exam with residential focus
HIC Registration
Scope: Home improvement contracts $1,000+
Testing: No exam; registration requires disclosures, insurance, and contribution to the Guaranty Fund
Most residential builders maintain both CSL (for permits) and HIC registration (for consumer protection compliance).
What's on the Massachusetts contractor exam
Prometric offers CSL exams in Boston, Fall River, Lawrence, West Springfield, and online proctoring.
What Massachusetts exam questions emphasize
- 780 CMR structural provisions, energy code, and fire safety
- Lead-safe renovation and EPA RRP rules
- Home Improvement Contractor contract clauses and deposit limits (1/3 cap)
- Massachusetts lien law (Notice of Contract within 90 days, Statement of Account within 120 days)
Exam-day logistics
- Bring government ID, Authorization to Test, and allowed code books (780 CMR, IRC, IBC as specified)
- Open book but time-limited—tab critical sections before the exam
- Scores appear immediately; submit proof to BBRS along with insurance certificates
Massachusetts contractor exam blueprint (verified June 2026)
Massachusetts requires two separate credentials for most residential contractors: a Construction Supervisor License (CSL) to supervise the work, and a Home Improvement Contractor (HIC) registration to contract with homeowners.
| Construction Supervisor License (CSL) | Required to supervise work on buildings under 35,000 cubic feet and all 1–2 family homes; this is the credential with an exam |
|---|---|
| Home Improvement Contractor (HIC) | No exam — a registration with the Office of Consumer Affairs (OCABR) plus a Guaranty Fund payment; required to contract residential remodeling |
| CSL Unrestricted exam | 75 questions · 3 hours · 70% to pass · open-book · based on the 10th edition Massachusetts State Building Code (780 CMR) |
| Exam vendor | PSI (replaced Prometric on January 1, 2025) |
| Experience | 3 years (~4,500 hours) of construction or design experience within the past 10 years |
| Exam fee | ~$100 per attempt; no mandatory waiting period to retake |
What trips Massachusetts applicants up
People often register as a Home Improvement Contractor and assume they are fully licensed — but building or structurally altering a home also requires the CSL. And because the exam moved to PSI and the 10th-edition code, older prep materials built for Prometric and the 9th edition are now out of date.
Verified sources: MA CSL Candidate Information Bulletin (PSI) · Mass.gov — CSL Examination Bulletin.
Who needs a Massachusetts contractor credential (and who does not)
Construction Supervisor License (CSL) paths differ from Home Improvement Contractor registration. Restricted vs unrestricted CSL matters for scope.
| Unrestricted / restricted CSL | Covers: Supervising construction under BBRS CSL rules Authority: Massachusetts BBRS — CSL exams and experience requirements |
|---|---|
| Home Improvement Contractor (HIC) | Covers: Home improvement contracting under consumer-protection rules Authority: HIC registration — deposit caps and contract clauses apply |
| CSL vs HIC confusion | Covers: Assuming one credential covers both supervision and HIC sales rules Authority: Often both layers apply — confirm before advertising |
Most-missed Massachusetts contractor exam topics
780 CMR, lead-safe renovation, and HIC deposit caps separate Massachusetts exams from generic national prep.
- 780 CMR structural, energy, and fire-safety provisions
- Lead-safe renovation and EPA RRP rules on older housing
- HIC contract clauses and one-third deposit limits
- Restricted vs unrestricted CSL scope mistakes
- NASCLA assumptions that do not replace CSL testing
Trade-specific exam guides
If you're licensing in a single trade rather than the Massachusetts general contractor classification, the dedicated trade hub will get you to the right code book and exam structure faster.
- General contractor exam guide — IBC/IRC, NASCLA acceptance, and Business & Law.
- Electrical contractor exam guide — NEC (NFPA 70) calculations and grounding/bonding.
- Plumbing contractor exam guide — IPC/UPC drainage sizing, venting, and backflow.
- HVAC contractor exam guide — IMC ventilation, refrigerant management, and load calcs.
Massachusetts code books & approved references (2026)
Always confirm the exact editions and tab rules in your candidate bulletin before exam day. Editions can change between license cycles.
- 780 CMR (Massachusetts State Building Code based on IBC 2015)
- 2015 International Residential Code
- International Energy Conservation Code 2015 (Massachusetts amendments)
- OSHA 29 CFR 1926
- MGL Chapter 142A (HIC Law)
- EPA RRP guidance
Fees & timeline for the Massachusetts contractor license
- $150 CSL exam fee + $150 initial license
- $150 HIC registration + $100 Guaranty Fund contribution
- Renewal every 2 years (CSL) with 12 hours CE; HIC annual renewal $100
- Insurance: $500k liability and workers' comp for employees
- Lead-safe certifications if disturbing lead paint
Use the All States hub for cross-state planning; check BBRS and OCABR for exact fees before filing.
Massachusetts Business & Law focus
The CSL exam embeds business/law and code content; HIC registration emphasizes contract compliance, consumer rights, and Guaranty Fund rules.
- Memorize HIC contract requirements (start/completion dates, CSL/HIC numbers, Guaranty Fund notice)
- Understand lien and payment rules under MGL c.254
- Know worker classification tests (ABC test) and workers' comp obligations
- Review OSHA Subpart M, L, and X for safety questions
Practice with our Massachusetts CSL & HIC simulator and the national Business & Law exam hub for cross-state baseline rules.
NASCLA acceptance in Massachusetts
Massachusetts does not accept NASCLA for Construction Supervisor License (CSL) paths. Candidates must pass the required BBRS/CSL exams and meet Massachusetts experience and application rules regardless of out-of-state NASCLA credentials. Confirm the current candidate bulletin for your classification, then use timed state-specific practice instead of assuming an out-of-state NASCLA letter will transfer. Use timed practice to rehearse the modules and paperwork that still apply after any out-of-state credential review.
More: National NASCLA exam guide and our in-depth NASCLA Accredited Exam study walkthrough.
A focused 4-week study plan for the Massachusetts exam
Because Massachusetts contractors design for 110-mph coastal winds, 70 psf snow loads, salt spray corrosion, and freeze–thaw cycles, this four-week outline targets what Massachusetts field inspectors and your licensing board exam items actually test—not generic national prep.
- Week 1 — Map the exam. Pull your current candidate bulletin, list every reference, and confirm the modules you have to pass. Start a one-page error log. Spend extra time on: 780 CMR structural provisions, energy code, and fire safety.
- Week 2 — Code book navigation. Drill open-book lookups (or memorisation drills if your module is closed-book) until you can find any answer in under 60 seconds. Anchor practice around: Lead-safe renovation and EPA RRP rules.
- Week 3 — Business & Law. The CSL exam embeds business/law and code content; HIC registration emphasizes contract compliance, consumer rights, and Guaranty Fund rules. Layer in scenario-based questions on contracts, lien notice, payroll, and insurance.
- Week 4 — Full simulations. Prometric offers CSL exams in Boston, Fall River, Lawrence, West Springfield, and online proctoring. Run two full-length timed simulations. Review every miss with a one-sentence rule statement.
FAQs - Massachusetts contractor exam
Do I need both CSL and HIC?
If you pull permits and contract with homeowners, yes—CSL for permits and HIC for consumer protection.
What is the CSL exam format?
75 questions, open book, 3 hours at Prometric centers.
Is NASCLA accepted?
No. Massachusetts Construction Supervisor License and related paths require BBRS/CSL exams. Out-of-state NASCLA credentials do not replace Massachusetts testing or application requirements.
How often do I renew?
CSL renews every 2 years with 12 hours of CE; HIC renews annually.
What climate topics show up?
Nor'easter wind loads, ice dams, floodproofing, and energy code compliance.
What insurance is required?
$500k general liability and workers' comp.
Is the exam open book?
Yes, but only approved code books are allowed.
More Massachusetts contractor exam prep resources
Core resources
Exam-day reading
Recommended for Massachusetts candidates
Start your Massachusetts contractor exam prep today
Use a realistic, Massachusetts-focused simulator to build timing, confidence, and repeatable passing habits.