Acorn Glade Passive House


This 1,800s.f. Passive House is designed to harmonize with its peaceful, wooded site. The interior is organized around a large south opening to a courtyard-like patio space; as a backdrop to this opening is a wall featuring walnut from trees harvested on site. As a Passive House, it uses about a tenth the heating energy of a built-to-code home. As a Source Zero house, monitored results show it uses 86% less energy overall including all household energy use and electric car charging. Indoor air quality and occupant health are a primary objective as well, so no-added-formaldehyde panel materials, no-VOC, non-toxic paints, and Greenguard certified sealants, caulks, and adhesives were used along with a continuous demand-controlled ventilation system to provide superior air quality.  



General Contractor
Evolutionary Home Builders


Structural Engineer
Goodfriend Magruder Structure


Civil Engineer
Haeger Engineering


Third-party Testing and Verification
Eco Achievers


Hausman Photography


Energy Use per Architecture 2030
EUI = 7, 86% reduction


Winner, Single-Family, PHIUS Passive House Projects Competition, 2019
Winner, Source Zero, PHIUS Passive House Projects Competition, 2019


Green Building and Design, 2020, “Meet the Winners of the 2019 PHIUS Passive House Projects Competition”, January 25, 2021, “Acorn Glade: Chicago Area’s Third Passive House”