Source: Washington State Department of Agriculture (WSDA). Cottage food laws change often — confirm current rules before selling.
Washington newly imposed a $35,000 cap in 2025 (previously none). Permit ($355 / 2 yrs) and inspection required.
Outgrowing cottage food? When you need a licensed kitchen, see Washington 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.