The Two Credentials MA Law Requires
Massachusetts separates the right to pull a building permit from the right to sell home improvement work. The CSL covers structural work and permitting; the HIC registration covers the consumer contract and unlocks the Guaranty Fund. A legitimate MA contractor carries both — and will print both numbers on the first page of a proposal.
| License / Registration | What It Authorizes |
|---|---|
| MA Construction Supervisor License (CSL) | Examination-based license required to pull building permits and supervise structural work in Massachusetts. Issued by the BBRS under MGL c.143. |
| MA Home Improvement Contractor (HIC) | State registration required for residential work over $1,000. Unlocks the $10,000 Guaranty Fund consumer protection. Administered by OCABR under MGL c.142A. |
Why We List Both Numbers
Pro Build prints its CSL and HIC numbers on every proposal because each protects you differently: the CSL means a licensed supervisor is accountable for code-compliant structural work, and the HIC registration means you are covered by the Massachusetts Guaranty Fund. If a contractor stalls when you ask for either number, walk away.