Local Knowledge, World-Class Expertise

Perteet’s creative approach to infrastructure improvements delivers new and innovative ideas that help our clients solve today’s challenges with tomorrow in mind. With three offices in the Puget Sound region and one in Ellensburg, Perteet has a thorough understanding of local procedures and issues. Our on-the-ground knowledge and wide capabilities allow us to tailor our services to each of our client’s specific goals and challenges.

Our collaborative approach helps the cities and towns of our region realize their infrastructure goals.

Our collaborative approach helps the cities and towns of our region realize their infrastructure goals.

Perteet has an intuitive understanding of our needs and priorities. This shows in their careful management of budget and respect for deadlines. They look ahead to foresee risks, give immediate attention to any problems, and use time efficiently. The scope of work they offer is never excessive, and is always tailored to our needs.
— Engineering Client





Our leadership is dedicated to advancing infrastructure and enhancing the lives of people in our communities. Our President and CEO, Crystal Donner, has over 25 years experience designing and managing a wide variety of civil and transportation public infrastructure projects, including over two decades with Perteet. Along with guiding the Perteet team, Crystal is a founding board member of the Greenroads Foundation. She serves as Vice Chair of Economic Alliance Snohomish County and sits on the advisory board of Washington State University’s College of Environmental and Civil Engineering.


Award-Winning Infrastructure Solutions


For over 28 years, we’ve been partnering with public agencies to help keep people safe, our environment healthy, and our communities thriving. Our innovative team of engineers, planners, and construction management specialists have won many awards for their work, and continue to be honored for the impact their efforts have on our communities.


A Dedicated Team of Employee-Owners


As employee-owners, everyone on the Perteet team holds a stake in our company. With this, we have a unique drive for excellence that allows us to compete with some of the best civil engineering firms in the world. Everyone at Perteet has a strong interest in continually improving the quality of our work and continually offering responsive service to our clients. When our clients succeed, we all succeed, both as professionals, and as members of our communities.  


Enhancing Communities, Building Careers


At Perteet, we are committed to empowering our people to realize their full creative potential—and have fun while they’re at it. Our leadership provides team members with ongoing opportunities for growth in an open and supportive culture that emphasizes a healthy work-life balance. We are passionate about giving back to our communities, contributing money and volunteering our time for a wide variety of local organizations and events.
To learn more about why Perteet is such a great place to work, check out our Careers page.


Supporting Our Communities

Learn how the Perteet team supports a wide range of community organizations through volunteer activities and charitable giving.

Vision, Values, and History

Since 1988 we’ve been devoted to making a difference in our communities through innovation, hard work, and a close partnership with our clients.


We’re a 100% employee owned firm committed to empowering our people to realize their full creative potential in a fun and supportive work environment.