The design promotes healthy lifestyles by providing primary living on one floor, no materials containing volatile organic compounds, energy recovery ventilation systems, radon elimination systems, extension of interior spaces into the natural environment of the site, strong and direct physical and visual connections to nature, daylighting techniques providing occupants full integration into a natural, endogenous circadian rhythm. Incorporation¬¬¬ of daylighting with clerestories and solar tubes reduce daytime lighting requirements. Ground source geothermal heat pumps and superior-to-code insulation ensure minimal space-conditioning costs. Corten steel siding and concrete foundation walls satisfy client requirements for low maintenance and durability. All lighting fixtures are LEDs.