WA corp. wants to open shop in CA
I presume your wood shop is registered as LLC or Corporation with WA Secretary of State. The company will likely need to register with the CA Secretary of State as a foreign entity. This is required if a company is regularly ???transacting business??? in California. A physical location in CA is generally considered to meet that threshold.
You may need to obtain a California sellers permit depending on whether the CA location will be "selling merchandise or other tangible personal property in California."
Your business may also need to obtain a local business license for the city or county that the CA shop will be located.