How to Check a Contractor in Massachusetts

Massachusetts has two credentials homeowners often hear about: Home Improvement Contractor (HIC) registration and a Construction Supervisor License (CSL). They answer different questions. Your home and the scope of work determine which one applies.

Start with the HIC registration

The state says contractors, subcontractors, partnerships, and corporations soliciting, bidding, or performing covered work on an existing owner-occupied non-commercial property with one to four units generally need HIC registration. Ask for the registration number and use the MA Contractor Hub and HIC homeowner resources to check it. The business that signs the home improvement contract should be the registered business.

Structural work may also need CSL oversight

A CSL is not the same as an HIC registration. Massachusetts says a CSL or registered design professional generally must oversee construction involving structural elements. Whether the project needs HIC registration, CSL oversight, a permit, or more than one of those depends on the scope.

Consider the difference between repairing an existing deck and building a new deck. Massachusetts lists repairing existing decking as an ordinary repair, while building a deck is an example of a larger project that may require a CSL. Ask the city or town building official to confirm what applies to your plans. Have the estimate say whether the contractor is repairing, rebuilding, or replacing the structure.

Make the oversight visible in the bid

Ask who holds the CSL, who holds the HIC registration, who applies for the permit, and who supervises the work. If a contractor subcontracts framing or electrical work, list the subcontractor and credential. Compare the proposed materials, footing or support work, demolition, access, disposal, allowances, schedule, and change process.

A helpful question: “I can see the HIC registration. Which CSL holder or design professional will oversee the structural work, and where is the permit plan shown?”

Review the contract before signing. It should make clear the price, payment schedule, included tasks, exclusions, expected timing, and how changes are documented. Keep permit and inspection records with your signed copy and receipts.

Browse Massachusetts home-service listings, search by state, or ask SheFix for help. Request a list of suitable pros, one quote, or up to three pros contacted.

Paperwork to keep through the job

Save the registration lookup and the CSL or design professional details with your agreement. When the permit is issued, retain a copy and note each required inspection stage. If the contractor proposes a material substitution or finds a structural condition, ask for the reason, revised drawing or description when relevant, cost, and schedule change in writing. Make the selection only after you understand whether it changes the permit or oversight plan. At closeout, keep inspection sign-offs, product information, warranty contacts, and the contractor’s final invoice together.