Verified License
Every Boston plumber on this site shows real-time MBR# and license status—no guesswork, just verified proof.
In Boston, hiring unlicensed plumbers risks unsafe work and financial liability. Massachusetts law requires all plumbing contractors to hold active licenses issued by the Board of Registration of Plumbers and Gas Fitters. The MBR# (Master Plumber Business Registration number) is tied to both the business and its master plumber. You can verify it directly via the state’s online portal—links are often provided on this site for quick access.
Look for the license badge near contact info on each plumber’s profile. Active status means no suspensions, completed continuing education, and proof of insurance on file. Licensed pros are required to carry at least $1 million in general liability coverage—this protects you from property damage or injury during service. Unlicensed contractors often lack insurance, leaving homeowners exposed to costly disputes or repairs.
When scheduling, ask how the plumber confirms license status with the state before assigning crews. Reputable companies check real-time boards and update their own databases daily. Boston’s strict enforcement—especially after major inspection rounds—means non-compliant pros get flagged quickly. This visibility reduces risk and builds confidence before you commit time or access.
