The Hempcrete Roundhouse | America’s First Permitted Hemp Round Home

In this episode, Greg Flavall visits one of the most unique hemp homes ever built in the United States. A two-story, 1,800 sq ft hempcrete roundhouse in Nevada County, California. Reported by its builders to be the first permitted hempcrete roundhouse in the U.S., this home shows how natural materials like hemp and lime can meet modern building codes while delivering fire resistance, seismic resilience, breathability, and long-term durability. Inspired by traditional yurt design, the roundhouse features hemp-lime walls, passive cooling through underground air tubes, and a skylight system that naturally regulates airflow and temperature. This project remains a landmark example of early code-compliant hemp construction in North America — and it’s still standing strong today. 👉 Like, comment, and subscribe to support hemp building education. #Hempcrete #HempRoundhouse #NaturalBuilding #SustainableConstruction #HempBuilding #GregFlavall #HempTechnologiesGlobal #EcoHomes