Built Green is a volounteer program administered by the Home Builders Administration of Metro Denver, and supported by the Governor's Office of Energy Management and Conservation, Xcel Energy, E-Star Colorado, the Colorado Association of Home Builders, and many local HBAs across the state. Prior to certification each home is evaluated on more than 160 seperate criteria that pertain not only to energy conservation, but also to indoor air quality, efficient use of forest resources, water efficiency, and more. View Built Green Check List

Energy Star is a federal program run by the US Environmental Protection Agency. Energy Star establishes energy efficiency standards for a wide variety of consumer products including homes. Homes that meet these criteria are authorized to wear the Energy Star label.

E-Star is a department of the Colorado Housing and Finance Authority. In addition to promoting energy efficient housing throughout the state, one of E-Star's primary functions is to train the testers who go into the field and to actually evaluate the homes. It is E-Star who determines whether a home meets the efficiency standards that have been established at the national level by Energy Star. is a department of the Colorado Housing and Finance Authority. In addition to promoting energy efficient housing throughout the state, one of E-Star's primary functions is to train the testers who go into the field and to actually evaluate the homes. It is E-Star who determines whether a home meets the efficiency standards that have been established at the national level by Energy Star.