Our Firm

Your success is our success

Who we are

Coughlin Porter Lundeen is a civil and structural engineering firm. Focused in the Pacific Northwest, we partner with clients across markets to bring unique project visions to life. We were founded with the goal of exceeding the standards and services provided by engineering firms, and today, almost 30 years later, that vision continues to guide all that we do.

Seattle, WA


Coughlin Porter Lundeen was founded in 1994 by Jim Coughlin, Steve Porter, and Terry Lundeen. Since then, Coughlin Porter Lundeen has grown steadily from a team of six to a firm of more than 100.



Coughlin Porter Lundeen serves as a partner to the region’s top developers, architects, contractors and organizations. The values established at our founding still guide all we do.  We love rising to the challenges presented by unique client visions and the fast-growing Pacific Northwest.

What we do

Quality and exceptional service are the cornerstones of our business, which is why we take the time to get things right – every drawing, every detail, every time. We provide an exceptional product in our drawings and designs, but to us, “exceeding standards” means much more.

Exceeding Standards

  • Understand the big picture
  • Employ a comprehensive vision
  • Coordinate designers & contractors
  • Streamline the process
  • Be accessible and authentic

Engineering Services

  • Building Structural Design
  • Civil Site Design
  • Historic Renovation
  • Seismic Evaluation
  • Surface Water Management

How we do it

We approach engineering differently. We choose projects that require imagination and ingenuity, and see ourselves as much more than a traditional consultant. Our team functions as a key part of the core team, regularly exceeding the standard scope of our discipline and redefining what it means to be an engineer.

Our Process


Meaningful Technology


Our team donates hundreds of hours each year both locally and internationally and Coughlin Porter Lundeen is regularly recognized as a top corporate donor of time and talent.

We’re active in the community, both as individuals and as a team. Our staff are advocates for the causes most important to them, serving on executive boards of nonprofit organizations, traveling internationally on nonprofit teams, supporting STEM students, donating engineering services, organizing office donations, service events, and campaign.

More about our community
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Diversity, Equity and Inclusion

Coughlin Porter Lundeen is committed to advancing diversity and inclusion. Internally, equity takes the form of training and mentorship efforts and identifying multiple channels through which we support women and underrepresented minorities in engineering.

By appreciating the importance of inclusion, we acknowledge that the collective individual talents, skills, and perspectives of a diverse staff fosters a culture of belonging, collaborative practice, innovation, and mutual respect that leads to a deeper relationship with our clients, our projects, and our community.

More on our commitment to DEI