Multifamily Standards

Multifamily Projects on the Rise

The release of the climate-specific, cost-optimized Phius standard ignited tremendous growth in passive building from coast to coast, with the most significant gains in multifamily housing. Phius Certified and Pre-Certified projects now total more than 7 million square feet across 6,800+ units nationwide.

The Three Pillars of Phius Certification Standards

Phius is a pass/fail passive building standard. For the CORE and ZERO options, it remains a “performance-based” energy standard that also includes prescriptive quality assurance requirements adopted from various U.S. government programs.

Limits on heating/cooling loads (both peak and annual)

Air-tightness and other prescriptive quality assurance requirements

Limit on overall source energy use

Want More Details?

Check out our comprehensive Phius Certification Guidebook to answer any questions you might have.
Phius Guidebook

Phius is here to help

Not sure where to start when it comes to getting your multifamily project Phius certified? Take a deep breath, because we are here to help.
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A zero-carbon future starts right here with our locally tailored, globally applicable passive building standards.

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