FSi Engineers has our home office over the waters of the Salish Sea on Pier 54 of Seattle’s waterfront. We look out toward the beautiful Olympic mountain range, watching ferry, commercial, and pleasure boat traffic as we hear the sounds of the player piano in Ye Olde Curiosity Shop downstairs.

FSi Seattle's Projects

We’re only a short distance from one of our favorite projects, the Colman Dock Ferry Terminal, which we’ve been working on since 2013. It’s fun to stand in the naturally cooled structure, knowing we’ve had a hand in each phase of the ongoing renovation.

Other clients in our portfolio include the Port of Seattle, Whatcom County, King County, The Evergreen State College, Harborview Medical Center, and a variety of large manufacturing firms. Recent projects in the Seattle office are on the right.

Mountlake Terrace City Hall

Completion 2021 Architect ARC Architects Owner City of Mountlake Terrace Size 21,000 sf Public buildings need to evolve to fit changing usage needs over time. FSi has been part of many projects doing just that, including the construction of the new Mountlake Terrace City Hall and expansion of the existing police station. Both buildings are Read More

Mukilteo Ferry Terminal

Completion 2023 Prime Consultant KPFF Consulting Engineers Owner Washington State Ferries Size 20,000 sf Certification LEED Gold Awards 2023 AIA Architecture Award, 2022 ACEC Engineering Excellence Honor Award // see below for more Washington State Ferries and Coast Salish tribal stakeholders began the Mukilteo Ferry Terminal project with ambitious sustainability goals, envisioning a complex that Read More

Seattle Children’s Odessa Brown Clinic

Completion 2020 Architect NBBJ Owner Seattle Children’s Hospital Size 35,000 sf FSi was the mechanical engineer for a new 35,000 sf, $7.7M pediatric healthcare clinic owned by Seattle Children’s Hospital. The clinic is in the Othello neighborhood of Seattle, on the first two floors of the Orenda Apartments in Othello Square. The project continues the Read More

W.W. Seymour Botanical Conservatory

Completion 2022 Architect SHKS Architects Owner Metro Parks Tacoma Size 11,000 sf Awards Citation Award, AIA Washington Council Civic Design Awards, 2022 The W.W. Seymour Botanical Conservatory in Wright Park, Tacoma, was built in 1908 and is listed on the National Register of Historic Places. But the building’s historical charm came with out-of-date systems and Read More

What We Do

FSi Engineers provides a full range of MEP and fire protection design to a variety of public and private clients from the Pacific Northwest to the Mid-Atlantic region. We also provide energy modeling, commissioning, facilities assessments, and help our clients meet new energy code and Washington Clean Building Act requirements.

Learn more: Home page.

Contact our Seattle Office:

206.622.3321 Phone
206.622.5804 Fax
1001 Alaskan Way, Suite 200
Seattle, Washington 98104

All-electric energy codes go statewide

The 2021 Washington State and Seattle energy codes take effect soon. For the first time, all-electric systems are required statewide.

A Space to Learn Wine

Check out our work on the WSU Wine Science Center!

A Cafeteria for the Earth

The new cafeteria at Green Lake Elementary features state-of-the-art sustainable design.