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Seattle, WA
  • Bldg system

    Mass Timber

  • No. Of Stories


  • Sq. footage


The eight-story project will be the first Type-IVC IBC Building Code building permitted in the City of Seattle. The project exposed the CLT ceilings and wooden column and beams within the units, hallways and lobby. 126-units are provided, including an outdoor courtyard, bike parking, retail, laundry. The project is on track to receive a Building Permit from the City of Seattle in April 2021 and start construction in 2021 Q2. With Skipstone Development, Swinerton Construction, DCI Engineering, and a fully integrated team using extensive Building Information Modeling (BIM) for prefabrication of all Mass Timber elements. Supported by a generous USFS/WIG grant from the United States Department of Agriculture.

This video explores the creation of 2-hour rated glulam beam-to-column connections on Heartwood, an 8-story Type IV-C building in Seattle, WA. Hear from project team members about the design, fabrication, and construction process they undertook to blend traditional joinery techniques with cutting-edge mass timber fabrication advancements. Featuring Adam Jongeward, PE SE; DCI Engineers; Taylor Cabot and Lauren Magasko, Timberlab.

  • Construction Cost:

    $25 million

  • Construction Type:


  • Building Type:

    Multi-Family (Apartments, Condos)

  • Material Types:

    Mass Timber

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