All construction contractors must be registered with the Washington State Department of Labor & Industries. Chapter 296-200A of the Washington Administrative Code provides all the information and regulations on registering as a contractor.
The Department of Labor & Industries distinguishes between two main contractor registration classifications: general and specialty contractors. General contractors can perform almost all types of construction work and can hire subcontractors of different specialties. Specialty contractors can only perform work specific to the specialty registered in and are not allowed to subcontract for work.
Department of Labor & Industries
7273 Linderson Way SW
Tumwater, WA 98501-5414