Session Certification and verification Designers and consultants Builders and trades

Lessons Learned

Sarah Lewis, Passivhaus Trust; Beth Campbell, Passive House Massachusetts · 2026 Conference

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From Massachusetts and the UK, from the C-suite to the trades: how construction-phase quality unlocks the full value of Passive House in large and complex buildings, and what more than 40 Passive House professionals learned as Massachusetts moved to require certification.

Key points

  • How construction-phase quality assurance shapes Passive House performance, certification, and long-term asset value in large and complex buildings.
  • The procurement, programming, and site-management strategies that most reduce performance risk and rework at scale.
  • What has worked for certified Passive House projects in Massachusetts, and the recurring risks to certification.
  • Communication, collaboration, and team education practices gathered from more than 40 experienced Passive House professionals.

Topics: Airtightness, Quality assurance, Ventilation

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