About us

Mortenson's Seattle office has been building complex projects in the Northwest for over 34 years, exceeding $5 billion in value. We bring value to our customers by providing innovative solutions to their facilities' needs and treating every relationship as a partnership. The three attributes of the Mortenson Experience - ingenuity, expertise and exceptional people - are incorporated into every project we undertake to ensure a better building experience for our customers, design partners, and our team members. Mortenson is committed to relationship-based projects and alternative delivery. Since its adoption in Washington State in 1991, Mortenson has successfully delivered or currently has under contract over 40 Washington State GC/CM projects. As a design-build leader, Mortenson has completed or is in progress on Washington state's first Progressive Design-Build projects. Because of our experience, we understand alternative delivery and are able to optimize best value for our customers