Board of Building Regulations and Standards / Office of Consumer Affairs
Massachusetts requires a state-level contractor license for projects above HIC registration for home improvement; CSL for structural work. Exam required. NASCLA not accepted. Administered by Board of Building Regulations and Standards / Office of Consumer Affairs.
Massachusetts splits contractor regulation into two tracks, and you must hold the right credential before you bid, not after you win. Home improvement work on existing one-to-four-family dwellings requires Home Improvement Contractor (HIC) registration through the Office of Consumer Affairs, while any structural work on buildings requires a Construction Supervisor License (CSL) issued by the Board of Building Regulations and Standards. The HIC is registration-based; the CSL requires passing an examination. For most residential remodelers, you will carry both. Confirm which credential a given scope demands during takeoff so your bid reflects a contractor who can legally pull permits and sign off on the work.
Massachusetts does not accept the NASCLA exam, so out-of-state bidders cannot shortcut the CSL with a national credential — plan to sit the Massachusetts exam and budget the lead time before pursuing structural work here. Continuing education of roughly 10 to 12 hours every two years applies, so factor renewal compliance into your overhead. Electrical, plumbing, gas fitting, sheet metal, and fire protection are separately licensed trades; price those scopes assuming a properly licensed sub, and verify their credentials before listing them in your bid.
Bidding or performing without the proper credential carries real teeth: fines up to $5,000, possible imprisonment, voidable contracts, and loss of mechanic's lien rights. A voided contract or lost lien means you may have no enforceable path to collect, which can turn a profitable job into a total loss. The state also runs a mandatory arbitration program for homeowner disputes, so build clean documentation and written contracts into your process. Carrying current registration and CSL is the baseline cost of competing for Massachusetts work and protecting your right to get paid.
10-12 hours every 2 years
Fines up to $5,000; imprisonment possible; contracts may be voided; loss of lien rights