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- What is Passive Building?
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Phius Certified Builder Training & Certification Exam | Bellingham, WA | September 2026
Level up your career by becoming a Phius Certified Builder
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  September 14 – 25
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- New Construction
  Phius CORE and Phius ZERO provide the path for constructing a Phius building from the ground up.
- Retrofit
  Upgrade existing buildings to Phius standards using Phius CORE REVIVE and Phius ZERO REVIVE.
- Commercial
  Phius standards aren't just for residential buildings. Phius CORE COMM and Phius ZERO COMM can be applied to any non-residential building.
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Upcoming Sessions
- Phius Certified Builder Training & Certification Exam | September 2026
  September 14 – 25
- Phius Certified Verifier Training | September 2026 | Boston, MA
  September 15 – 17
- Phius Certified Builder Training & Certification Exam | Bellingham, WA | September 2026
  September 15 – 17
- Sept Webinar: Phius Trades Training
  September 15
September 15 – 17

Phius Certified Builder Training & Certification Exam | Bellingham, WA | September 2026
Level up your career by becoming a Phius Certified Builder
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- Policy Work
  Promoting policies designed to grow passive building
  Policy Database
- Tools and Support
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2026 Member Meeting & Social

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April 22, 2026 5:30–7:30pm

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