Licensed Contractors in Massachusetts
Massachusetts licenses general contractors through the OPSI Construction Supervisor License (CSL) — required for anyone supervising construction on buildings containing one to four dwelling units or over 35,000 cubic feet of enclosed space. Electricians, plumbers, and HVAC trades sit on separate state portals and are not included in this dataset; home-improvement trades like roofing and painting fall under the HIC registration at contractorhub.mass.gov.
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The contractor market in Massachusetts
Massachusetts has 4,077 active licensed contractors, each verified against the Massachusetts Office of Public Safety and Inspections (OPSI) registry.
Cities with the most licensed contractors in Massachusetts
| Rank | City | Licensed contractors |
|---|---|---|
| 1 | Boston | 55 |
| 2 | Plymouth | 51 |
| 3 | Franklin | 40 |
| 4 | Framingham | 38 |
| 5 | Worcester | 37 |
| 6 | Nantucket | 37 |
| 7 | Quincy | 34 |
| 8 | East Falmouth | 33 |
| 9 | Waltham | 31 |
| 10 | Danvers | 31 |
Ranked by mapped active licenses. Cities only. The full roster covers every Massachusetts ZIP.
General Contractors are the largest licensed trade in Massachusetts, with 4,094 active licenses. Every other covered trade is shown with its own count in the map above.
Common questions about Massachusetts contractors
How many licensed general contractors are in Massachusetts?
4,094 active licensed general contractors are registered in Massachusetts, verified against the Massachusetts Office of Public Safety and Inspections (OPSI). ContractorRoster delivers every one with phone, email, and website.
How do I verify a Massachusetts contractor license?
Check any license number directly with the Massachusetts Office of Public Safety and Inspections (OPSI) at https://madpl.mylicense.com/Verification/. Every record we deliver carries its active license number so you can confirm it at the source.
What does a Massachusetts contractor list cost, and how current is the data?
Lists start at $19, delivered as a CSV within 3 minutes. The Massachusetts data was last refreshed 2026-07-07, sourced direct from the Massachusetts Office of Public Safety and Inspections (OPSI) and enriched with contact info for most records.
Which contractor trades does Massachusetts cover?
Massachusetts covers 1 trade: general contractors. Search any one by city or ZIP.
Which Massachusetts cities have the most licensed contractors?
Boston, Plymouth, Franklin lead Massachusetts by licensed-contractor count. ContractorRoster covers every city and ZIP in the state, not just the major metros.
Are the Massachusetts contractors in this list currently active?
Yes, every record is an active license; expired and lapsed licenses are filtered out. The Massachusetts data was last refreshed 2026-07-07 from the Massachusetts Office of Public Safety and Inspections (OPSI).
Massachusetts market research
Data source
Direct from the Massachusetts Office of Public Safety and Inspections (OPSI)
Every record we deliver in Massachusettscomes from the state's official license registry, refreshed regularly. We enrich each row with phone, email, website, and Google ratings sourced from public business listings. Contact info present for most records.
Visit Massachusetts Office of Public Safety and Inspections (OPSI) →What you get
- • Active license number + classification
- • Business name + license holder name
- • Phone, email, website (most records)
- • Google rating + review count where available
- • Full mailing address + ZIP
- • Issue date + expiration date
- • CSV delivered to your inbox in under 3 minutes