Doing what's best for your project

Mortenson’s Seattle office has been building complex projects in the Northwest for over 36 years. We bring value to our customers by providing innovative solutions and treating every relationship –customers, design partners, and team members – as a partnership. Our commitment to relationship-based projects and alternative delivery allows us to optimize the best value for our customers.

The culture of Mortenson and what they bring to the worksite is so positive and impressive. Mortenson and the support that they have brought to this community has been amazing. There were a lot of hours put towards education and supporting businesses to take them through not only the process but to help them understand the certification and how they could elevate their business and their opportunities.
UW Softball Performance Center

Mighty are the Women

The new 20,000 SF UW Softball Performance Center is the quality facility a national powerhouse team deserves.

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Solar panels on Climate Pledge Arena

Corporate Champion: Environment Award

Michael Harder, Vice President & General Manager, discusses how the team embraced the challenge of creating the world's first carbon zero arena and achieved what others said was impossible. 

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Everett Community College Cascade Learning Resource Center

The newest addition to the Everett Community College campus initiates the school's jump east across Broadway to enhance student success. 

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Building Climate
Pledge Arena

Healthcare study 2021

2021 Healthcare Facility Trends


Mortenson Seattle voted a best place to work 2022

Seattle Construction Cost Index

The Mortenson Construction Cost Index is calculated quarterly by pricing a representative non-residential construction project in geographies throughout the country. View the latest trends in construction costs for the Seattle area.


Questions about getting started on your project?

Design-Build, Progressive Design-Build? How do you determine which Delivery Method is right for you?