How to Check a Contractor's License in Massachusetts

Massachusetts doesn't have a single contractor license the way states like California or Florida do. Instead, it splits things into two systems: a Home Improvement Contractor (HIC) registration for general residential work, and a Construction Supervisor License (CSL) for structural projects. On top of that, specialty trades like electrical, plumbing, and gas fitting have their own separate licenses.

It's confusing, and most homeowners don't know which one to check. This guide breaks down exactly how to verify a contractor in Massachusetts, which credentials to look for, and what to do if you can't find someone in the system.

Does Massachusetts require a contractor license?

Yes, but Massachusetts uses two separate systems. Any contractor doing residential remodeling or repair work over $1,000 must register as a Home Improvement Contractor (HIC) through the Office of Consumer Affairs. Projects involving structural work — additions, load-bearing changes, new construction — additionally require a Construction Supervisor License (CSL). Many contractors hold both credentials.

Before you start searching, you need to know which credential your contractor should have. Massachusetts uses two different systems for two different types of work.

• Home Improvement Contractor (HIC) registration. This is required for anyone doing residential remodeling, renovation, or repair work over $1,000. It covers things like kitchen remodels, bathroom renovations, siding, roofing, painting, and similar home improvement projects. The HIC registration is managed by the Office of Consumer Affairs and Business Regulation.
• Construction Supervisor License (CSL).This is required for any project involving structural work — new construction, additions, major structural alterations, or demolition. If your contractor is building something from the ground up or making changes to load-bearing walls, they need a CSL. This license is issued by the Board of Building Regulations and Standards (BBRS).

Many contractors hold both. A general contractor doing a full home renovation will typically need a CSL for the structural portions and an HIC registration for the finish work. If your project is purely cosmetic (new countertops, flooring, paint), the HIC registration alone is usually sufficient. If there's any structural component, they need the CSL.

How do I check a contractor's license in Massachusetts?

For HIC registrations, search mass.gov's HIC lookup by contractor name, business name, or registration number. For CSLs, use the separate CSL verification page on mass.gov and search by the individual's name — CSLs are issued to people, not companies. Both searches are free and take under two minutes each.

The Office of Consumer Affairs maintains an online search tool for registered Home Improvement Contractors. Here's how to use it:

1. Go to the Massachusetts HIC Registration Check page on mass.gov.
2. You can search by the contractor's name, business name, or registration number. Business name tends to work best if you don't have the registration number.
3. The results will show the contractor's registration status, registration number, business address, and whether the registration is current.

A few tips for searching: try partial names if the full business name doesn't return results. Some contractors register under a slightly different name than what they advertise. If the business is "Johnson & Sons Home Improvement LLC," try just "Johnson" first.

How do I check a Construction Supervisor License in Massachusetts?

Go to the CSL verification page on mass.gov and search by the supervising individual's name or license number — not the company name. Confirm the license type: an unrestricted CSL covers any project, while a restricted CSL is limited to one- and two-family dwellings. Make sure the license type matches the scale and structure of your project.

The CSL lookup is handled through a different system. The Board of Building Regulations and Standards manages these licenses.

1. Visit the CSL verification page on mass.gov.
2. Search by the individual's name or license number. Note that CSL licenses are issued to individuals, not companies. You need the name of the person who will be supervising the work, not just the company name.
3. The results will show the license type (unrestricted or restricted), status, and expiration date.

There are two types of CSLs. An unrestricted CSL allows the holder to supervise any construction project. A restricted CSL limits the holder to projects of a certain size or scope, typically one- and two-family dwellings. Make sure the license type matches the scale of your project.

What license database does Massachusetts use for specialty trades?

Massachusetts uses separate licensing boards for each specialty trade. Electricians are verified through the Board of State Examiners of Electricians; plumbers and gas fitters through the Board of State Examiners of Plumbers and Gas Fitters; sheet metal workers through their own board. Each has a dedicated verification page on mass.gov. A general contractor's CSL or HIC registration does not cover any of these trades.

Massachusetts licenses several specialty trades separately from the HIC and CSL systems. If your project involves any of these trades, the person doing the work needs their own specific license:

• Electricians.Licensed by the Board of State Examiners of Electricians. You can verify an electrician's license through the electrician license verification page.
• Plumbers. Licensed by the Board of State Examiners of Plumbers and Gas Fitters. Verify through the plumber and gas fitter license verification page.
• Gas fitters. Licensed by the same board as plumbers. Use the same verification link above.
• Sheet metal workers. Licensed by the Board of State Examiners of Sheet Metal Workers. Check through the sheet metal worker license verification page.

Your general contractor might subcontract these trades out. That's normal and expected. But the subcontractors themselves must hold valid licenses for their specific trade. A general contractor with a CSL cannot legally do electrical or plumbing work unless they also hold those separate licenses.

What should I check on the Massachusetts license detail page?

Check five things: status must be "Active" or "Current" (not expired or in-process of renewing); the name on the license matches your contractor's paperwork; insurance is current (HIC registrations require liability coverage); no disciplinary actions or complaints are on record; and the license type actually covers the scope of your project. An expired credential is functionally the same as having none.

Finding a contractor in the database is just the first step. Here's what to actually check once you pull up their record:

• Status is active or current.An expired registration or license means they're not legally authorized to work. Don't accept "I'm in the process of renewing" as an excuse — either it's current or it's not.
• The name matches.Make sure the business name or individual name on the license matches what's on your contract and estimate. Some contractors operate under a DBA (doing business as) name that differs from their registered name.
• Insurance is current.Massachusetts requires HIC registrants to carry liability insurance. The registration won't be valid without it. You can also ask the contractor for a certificate of insurance directly and call the insurer to confirm it's active.
• No disciplinary actions.Check whether there are any complaints, violations, or disciplinary actions on record. A clean record doesn't guarantee good work, but a record full of complaints is a clear warning sign.
• License type matches your project.If you're doing structural work, they need a CSL. If it's home improvement, they need an HIC registration. If it involves electrical or plumbing, the person doing that specific work needs the corresponding trade license.

The Massachusetts Home Improvement Contractor Program

Massachusetts has one of the stronger consumer protection programs for home improvement work in the country. The Home Improvement Contractor Program, run by the Office of Consumer Affairs, provides several protections worth knowing about:

• Mandatory written contracts. For any job over $1,000, the contractor must provide a written contract that includes the start and completion dates, a detailed description of the work, the total price, and the payment schedule.
• Payment limits. Contractors cannot demand more than one-third of the total price as a deposit before work begins. The remaining payments should be tied to project milestones.
• Right to cancel.Homeowners have three business days to cancel a home improvement contract without penalty after signing, as long as the contract was signed somewhere other than the contractor's place of business.
• Guaranty fund.Massachusetts maintains a Home Improvement Contractor Guaranty Fund that can compensate homeowners who suffer financial losses due to a registered contractor's failure to perform.

These protections only apply when you hire a registered HIC. If you hire someone who isn't registered, you lose access to the guaranty fund and the arbitration program. That alone is a strong reason to verify registration before signing anything.

The arbitration program for disputes

If things go wrong with your project, Massachusetts offers an arbitration program specifically for disputes between homeowners and registered contractors. Here's how it works:

• File a complaint. Contact the Office of Consumer Affairs to file a formal complaint against the contractor. You can do this through the complaint filing page on mass.gov.
• Mediation first. The state will typically try to mediate the dispute before moving to formal arbitration. Many complaints get resolved at this stage.
• Binding arbitration. If mediation fails, the case can go to binding arbitration. An independent arbitrator reviews the evidence from both sides and issues a decision. This is faster and cheaper than going to court.
• Guaranty fund claims.If the contractor won't pay an arbitration award or has gone out of business, you may be able to recover some or all of your losses through the Home Improvement Contractor Guaranty Fund, up to the fund's per-claim limit.

The key requirement is that the contractor must be registered. If they aren't, you're limited to filing a civil lawsuit, which is slower, more expensive, and harder to win.

What if my contractor can't be found in the Massachusetts database?

If you cannot find the contractor, first try partial name searches or the owner's personal name — some contractors register under a legal entity name that differs from their marketing name. If they still cannot be found and the project exceeds $1,000, they are likely operating illegally. Ask them directly for their HIC registration number or CSL number; a legitimate contractor will provide it immediately.

If a contractor doesn't show up in any of the state databases, there are a few possibilities:

• They're searching under the wrong name.Try variations of the business name, the owner's personal name, or just the first word of the business name. Some contractors register under a legal entity name that differs from their marketing name.
• Their registration or license has expired.They may have been registered in the past but let it lapse. An expired credential is the same as no credential — they shouldn't be working.
• They're not registered or licensed.This is the worst case. In Massachusetts, performing home improvement work over $1,000 without HIC registration is illegal. It's also a strong signal that the contractor is cutting other corners too.
• They're licensed in another state.If the contractor is based in a neighboring state like Connecticut, New Hampshire, or Rhode Island, they still need Massachusetts registration to work in Massachusetts. An out-of-state license doesn't transfer.

If you genuinely can't find someone after trying multiple search variations, ask them directly for their registration or license number. A legitimate contractor will have it readily available. If they dodge the question or make excuses, that's your answer.

The bottom line

Massachusetts has a layered licensing system that can be confusing, but the verification process itself is straightforward once you know where to look. For most residential projects, you need to confirm at minimum that the contractor has a current HIC registration. If the work involves any structural changes, verify they hold a Construction Supervisor License. And if the project includes electrical, plumbing, or gas fitting, make sure the person doing that specific work has the appropriate trade license.

The five minutes it takes to run these checks gives you access to Massachusetts's consumer protection programs, including the arbitration process and the guaranty fund. Skip the verification, and you're on your own if something goes wrong. It's one of the easiest ways to protect yourself before any money changes hands.