• REACH Orchards at Orenco
    Comfort. Quality. Efficiency. Resiliency. Affordability. Now.

Passive House for Multifamily Buildings

The cost-optimized, climate-specific PHIUS+2015 Passive Building Standard is spurring the rapid growth of multifamily passive buildings from coast to coast. Learn more to see how Passive House Institute US (PHIUS) can help you achieve the affordability, resiliency, and health benefits of passive building design on your next project.

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The PHIUS+ Standard

The PHIUS+2015 Passive Building Standard released by Passive House Institute US (PHIUS) in 2015 is the only passive building standard on the market based upon climate-specific comfort and performance criteria. Buildings designed and built to this standard perform 60-85% better (depending on climate zone and building type) on an energy consumption basis when compared to a code compliant building (International Energy Conservation Code IECC 2009).
The cost-optimized PHIUS+2015 Standard is spurring new growth in passive buildings from coast to coast, with the most significant gains coming from the multifamily housing sector. Certified and Pre-Certified PHIUS+ projects now total more than 1 million square feet across 1,200 units nationwide. As more units come online every day, more families are enjoying the affordability, resiliency, and health benefits of passive buildings.


PHIUS+ is the only passive building certification system that requires third party quality assurance/quality control (QA/QC). The QA/QC process is essential to making the case to investors and stakeholders that your project will successfully achieve modeled levels of performance.


Design Your Passive Building With Support From PHIUS

PHIUS has the experience and expertise to help you design and certify your multifamily passive building project. We offer a range of support services including Feasibility Studies, Quick Review Services, energy modeling support, and project design assistance. Contact us today to learn more about how we can help take your design from concept to reality.

Request A Low-Cost Feasibility Study

5 Steps to Certify Your Passive Multifamily Building

1 Find PHIUS+ Certified Professionals for your project team
2 Register your project with PHIUS
3 Complete the Pre-Certification process
4 PHIUS+ Rater/Verifier performs onsite QA/QC
5 Receive Final Certification
Questions? Contact us for support.

Passive Projects

Cathedral Square Corporation is a non-profit developer providing affordable, senior housing with common space and support services to allow seniors to live independently as long as possible. We...


  • "Every day I find a new reason to love it. It's cool, it's quiet, and I don't even hear the train. During the heat wave, my girlfriend came over to sleep because it was so cool."

    George Hamlin, Orchards at Orenco Resident
  • "You know this Passive House design business... you know what it really means to these families that are going to live in these buildings? It means they will pay almost nothing for utilities! That is what it means to these people!"

    Washington, D.C. Mayor Vincent Gray, Weinberg Commons
  • "...We were able to deliver these buildings without additional cost, and [that] was a big goal for us."

    Chris Benedict, Architect, Knickerbocker Commons