Source: Local board of health (with MA Dept of Public Health framework). Cottage food laws change often — confirm current rules before selling.
Administered locally: each city/town board of health inspects and permits. No income cap; only household members may help; direct-to-consumer only.
Outgrowing cottage food? When you need a licensed kitchen, see Massachusetts food-business requirements, estimate the build with the cost-to-open calculator, and check whether you need a hood.
Local food-permit cost, plan review and the health-department contact for the counties people look up most.