All corporations, joint stock associations, and limited liability companies (LLCs) that offer engineering or land surveying services must have a certificate of authorization in Washington, except for professional service (PS) corporations and professional service limited liability companies (PLLCs).
Your firm must register with the Washington Secretary of State to get a Unified Business Identifier (UBI) number before we can issue your certificate of authorization.
You can apply online or by mail.
Apply by mail
I work for a Canadian firm with several engineers licensed in Canada. Can we apply for a certificate of authority without having an engineer licensed in Washington State?
No, the designated engineer must be a licensed professional engineer in Washington.
How do I change the designated engineer or land surveyor for my firm?
Have the new designated engineer or land surveyor complete the Change of Designated Engineer/Land Surveyor form and send it in to our office.