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City of Seattle Updates Green Building Standard

Following the City’s adoption of the 2021 Construction Codes last November, the Seattle Department of Construction and Inspections have recently published a new Director’s Rule to supersede the 2021 Director’s Rule. These changes include:

  • Updates to the approved certification program levels and versions
  • New site development requirements to focus on embodied carbon reduction
  • Simplified application forms and processes


Seattle’s Green Building Standard is a great way to help projects gain extra floor area and additional height while also taking advantage of the benefits associated with a sustainable building. The major update to be aware of if you’re planning to participate in this incentive program is the introduction embodied carbon reduction requirements. It’s important to note that several of the new embodied carbon reduction requirements also contribute to the majority of the certifications required by the Green Building Standard.

Historically sustainability has been perceived as a cost premium due to the increased costs often necessary to pay for high-performance building systems, but embodied carbon is different; embodied carbon is directly tied to the volume of material we put into our buildings and should be associated with an optimized investment. (Reference the Clackamas Courthouse Case Study)

In fact, paying attention to optimization of material is essential as our market struggles to make projects pencil and design codes yield higher seismic loads which therefore require more material. Like operational carbon, investing up front in the early design phases to bring the design team (and especially the structural engineer) to apply their skills and experiences is essential in determining the most cost effective, structurally efficient, optimized building.

In addition to the City of Seattle, there are several other incentive programs in our area that offer benefits for focusing on sustainability and embodied carbon.

MAP

Area Incentive Programs

City of Everett

  • Additional Building Height

City of Bellevue

  • Parking Minimum Reductions & FAR Bonus

City of Redmond

  • Additional FAR & Building Height

City of Kirkland

  • Expedited Permit Review

City of Tacoma

  • Expedited Permit Review

At DCI Engineers, we specialize in unlocking value through structural system reuse, material optimization, supplier coordination, and life cycle assessment. Our expertise in embodied carbon reduction delivers measurable benefits—without added cost. We view carbon-conscious design as a smart investment strategy, and we’re committed to helping our clients identify solutions that drive structural efficiency, cost savings, and climate impact all at once.

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Learn More About DCI's In-House Sustainability Services

About the author

Jessica Martinez

Jessica Martinez, Associate, Structural Sustainability Specialist | Jessica leads on-the-ground efforts for DCI's sustainability initiatives across the firm's regional offices. Based in DCI’s headquarters in Seattle, Jessica is on the steering committee for her local Carbon Leadership Forum chapter where she provides embodied carbon leadership from the structural perspective to impact meaningful change in the building industry.

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