The Geothermal Utilization SOHO is a residential building completed in 2000 in Sapporo, Hokkaido, designed by Arb Architectural Institute. This innovative dwelling showcases pioneering sustainable design through its integration of geothermal heating technology, a particularly practical solution for Hokkaido's demanding winter climate. The project represents an early example of eco-conscious residential architecture in Japan, combining functional living spaces with environmental responsibility. The building demonstrates how geothermal energy systems can be effectively incorporated into residential design, making it a notable case study for architects interested in renewable energy integration and sustainable housing solutions developed in the early 2000s.