Contractor licensing — Massachusetts

Massachusetts splits contractor licensing across two separate regimes plus trade-specific boards. A general contractor working on anything but the simplest residential job needs to understand both the Construction Supervisor License (CSL) and the Home Improvement Contractor (HIC) registration, and often needs both. Construction Supervisor License (CSL). Issued by the Board of Building Regulations and Standards (BBRS) inside the Department of Public Safety. The CSL is required to supervise construction, reconstruction, alteration, repair, removal, or demolition of any building that exceeds 35,000 cubic feet of enclosed space, and for any structural work on one- and two-family dwellings, per MGL c.143 §94 and the state building code (780 CMR). The CSL is the license that lets you pull a building permit. CSL classes are set by BBRS rule and include: - Unrestricted Construction Supervisor. Buildings of any use group up to 35,000 cubic feet, and one- and two-family dwellings of any size. - Restricted Construction Supervisor 1 and 2 Family. Limited to structural work on one- and two-family dwellings. - Specialty CSL. Categories like masonry, roofing, window and siding, demolition, and insulation. To sit for the CSL exam, applicants must document construction experience (current BBRS rule for Unrestricted is three years of relevant experience at the time of this writing; confirm against the BBRS link below before you apply), pass the written exam, and meet continuing education requirements on renewal. BBRS publishes the current application, experience affidavit, and exam vendor details on mass.gov. Home Improvement Contractor (HIC) registration. Administered by the Office of Consumer Affairs and Business Regulation (OCABR) under MGL c.142A. Required for anyone doing residential remodeling, repair, replacement, improvement, or modernization on an existing owner-occupied one- to four-family dwelling. HIC is a registration, not a license. It does not authorize you to pull a permit (you still need the CSL or trade license for permitted work), but working on residential remodeling without it is prohibited and the consumer has private remedies for damages. HIC registration requires a fee and a contribution to the Residential Contractors' Guaranty Fund, which pays limited awards to homeowners who win arbitration or court judgments against registered contractors. Renewal is on a fixed cycle published by OCABR. Unregistered home improvement work is a statutory violation under c.142A and exposes the contractor to consumer arbitration, loss of mechanic's lien rights in some circumstances, and civil penalties. Trade licenses are separate. Electricians license through the Board of State Examiners of Electricians at the Division of Professional Licensure (DPL). Plumbers and gas fitters license through the Board of State Examiners of Plumbers and Gas Fitters at DPL. Refrigeration technicians license through a separate DPL board. Sheet metal workers license through the Board of Examiners of Sheet Metal Workers. Each board has its own apprentice/journeyman/master tier structure, exam, and experience requirements. A general contractor does not need a trade license to hire trade subs, but any trade work performed in-house must be supervised by a properly licensed journeyman or master in that trade. Local overlay. Massachusetts municipalities do not issue separate contractor licenses, but many require business certificates (DBA filings at the city or town clerk) and local building department sign-offs before permits issue. Boston, Cambridge, and Worcester have additional registration and insurance verification steps handled at the local inspectional services level.