StartUp Washington - Washington State Department of Commerce
Webpage
The purpose of this playbook is to give you all the critical information you need to start and operate a business in Washington State, whether you’re starting out from scratch, buying an existing business, relocating your company, or opening an office or facility within the state’s borders.
Business.WA.GOV Small Business Guidance
Webpage
This is a road map for opening a business in the state of Washington. There are eight steps in the road map but not all of them will apply to your business. We recommend you read through all steps in this road map before applying for your business license.
Governor's Office for Regulatory Innovation and Assistance
Webpage
You won’t want to start your business before you have completed your business plan!