A residential business retreat for an American entrepreneur in Whitefish, Montana. The concept of land preservation and minimal environmental impact guided the program for this project. 60% of the required square footage is completely subterranean. This approach maximizes the available land use. Winter snow conditions provide two meters of insulation to the shallow pitched roofs. These carefully calculated roof slopes, combined with highly reflective metal roofing, reduce summer heat gain through reflectivity. Native plant materials require little or no supplemental irrigation once established.