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November 22, 2022

Sellen starts on Fremont offices

Real Estate Editor

Rendering by Garret Van Swearingen/Evolution Projects [enlarge]
The future (above) and last weekend (below): 35 Stone (right) could be done in 2024; the 35 Interlake building (left, with green roof) hasn’t yet entered design review. The Seattle Bouldering building (left foreground) will remain.

Photo by Brian Miller [enlarge]

With no announcement from the owner, Sellen Construction recently finished the demolition and began the ground work at 3524 Stone Way N. Fences went up around Halloween, per Sellen's project website, with demolition following a week later.

The planned office building, dubbed 35 Stone, had its existing master use permit slightly modified in September. Weber Thompson is the architect, and it announced last week the onset of construction. The building will occupy the west side of a larger, nearly full-block development that owner Evolution Projects calls Campus Seattle.

Some old structures on the block will be preserved, including the familiar Fremont Collective building (home to evo, The Whale Wins and Joule), south of 35 Stone; and on the northeast corner, the old warehouse that's home to Seattle Bouldering Project.

On a sloping site, Weber Thompson's mostly mass timber 35 Stone will rise to five stories, with about 112,700 square feet of offices. The building will evidently proceed on a speculative basis, with no broker publicly listing the space. Update: Public records indicate a recent $81.7 million construction loan from Union Labor Life Insurance (aka Ullico). Weber Thompson says that 2024 is the goal for completion.

The 35 Stone team also includes Coughlin Porter Lundeen, structural engineer; KPFF, civil engineer; Hewitt, landscape architect; and WSP, mechanical and electrical engineer; Pangeo, geotechnical; Morrison Hershfield, building envelope; and Bush, Roed & Hitchings, surveyor.

Retail/commercial space will total 7,500 square feet. The building will also have some 137 parking stalls (both structured and below grade), and about 72 bike stalls. Total project size is around 177,000 square feet; the project originated before Fremont's Mandatory Housing Affordability upzone in 2019, so there's no MHA fee.

It is, however, employing the city's Living Building Pilot Program, which gains extra floor area via various green features. Those include dowel laminated timber (DLT), rooftop solar panels and beehives, water recycling for non-potable uses (in a 250,000-gallon underground cistern), salvaged and locally sourced building materials, sustainable landscaping and open stairs to encourage walking.

Weber Thompson's Kristen Scott said in a statement, “Mass timber is a natural fit to meet the needs of today's tenants. 35 Stone highlights the use of wood as a renewable resource and reduced carbon footprint, harkening back to the timber history of the neighborhood.”

As to the broader Campus Seattle project, Miller Hull is the master planner. It joined the team after Evolution Projects acquired the 35 Stone MUP and land at the end of 2021. That plus prior purchases on the block represent an investment of $23 million.

The future east building, 35 Interlake, will go south of the preserved Seattle Bouldering building. It'll run south to the corner of North 35th Street, replacing the existing evo bike and ski rental shop, along with a neighboring old office/apartment building. The architect, schedule and program for 35 Interlake — which looks to be offices — haven't been announced.


Brian Miller can be reached by email at brian.miller@djc.com or by phone at (206) 219-6517.

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