Mobile mechanic license in Massachusetts

In Massachusetts, general mechanical mobile repair is not separately state-licensed, but auto-body and collision work is (Motor Vehicle Damage Repair Shop registration (G.L. c. 100A) via MA Division of Standards (DOS), roughly $300, plus a $10,000 bond). If you do purely mechanical work you generally need no state license, but verify your specific scope.

Massachusetts at a glance

Federal rules that apply everywhere

Regardless of your state, these apply to mobile mechanics nationwide:

• EPA Section 609: you must be certified to service or repair vehicle air-conditioning systems that contain refrigerant.
• Seller's permit / sales tax: most states require one before you can charge customers for parts.
• Business registration: an LLC or sole-proprietor registration, plus an EIN if you hire.
• Consumer-protection & written-estimate laws: many states require a written estimate and authorization before work.

Frequently asked questions

Do you need a license to be a mobile mechanic in Massachusetts?

Not for general mechanical work. Massachusetts licenses auto-body/collision repair, but pure mechanical mobile work generally needs no state license — verify your scope.

How much does a mechanic license cost in Massachusetts?

The Massachusetts fee is approximately $300 plus a $10,000 bond.

Do mobile mechanics need insurance in Massachusetts?

Massachusetts does not require insurance to be licensed, but general liability and garage-keepers coverage are strongly advised and are typically required by fleet clients, apartment complexes, and dealer accounts.

Can you do A/C work as a mobile mechanic in Massachusetts?

Only if you hold EPA Section 609 certification, which is a federal requirement nationwide. It is a single exam, does not expire, and is required before you handle refrigerant on any vehicle.