PHIUS CORE 2021
An overview of projects, products and exclusive articles about PHIUS CORE 2021
Project • By Fantech • Private Houses
Project One
Project One is a landmark achievement in sustainable luxury housing. As the largest single-family, PHIUS-certified Passive House in the world, it redefines what’s possible in high-performance residential design. Built by Cross Construction, this three-story, electrification-ready home integrates advanced building science with refined aesthetics. With certifications including PHIUS CORE 2021, U.S. Department of Energy Zero Energy Ready Home (ZERH), and EPA Indoor airPLUS, Project One proves that energy efficiency and luxury can coexist.
Courtesy of Cross Construction
Building to PHIUS standards is no small feat, or as Alex Cross of Cross Construction put it, “very hard.” As of October 2025, almost 600 single-fam... More