Phius Zero Historic Renovation


This historic home in Oak Park was in need of updating, with deferred maintenance inside and out requiring extensive work. This created an opportunity to rethink the house for a modern family in the 21st century, with an updated plan, a strong connection to the yard from the kitchen and new mudroom, covered patio, and flexible rooms for work-at-home, gym, or guest functions. The insulation and mechanical systems were upgraded to Phius levels, and a solar PV array added to meet annual net zero energy performance. With minimal upfront energy expenditure, the home’s operational carbon was reduced by 100%, and the house is a delightful place for the young family to grow into. Read more about this project here.

Expected Completion

General Contractor
Bosi Construction

Structural Engineer
Carsello Engineering

Civil Engineer
Haeger Engineering

Third-party Testing and Verification
Eco Achievers

Energy Use per Architecture 2030
With Solar: EUI = -4.01, 108% reduction; Without solar: EUI = 10.92, 78% reduction