Good design and high level craftsmanship are essential to a high performance house. But there's more to the story. Homes are made up of complex and interrelated systems that must be designed to work together. Applying well researched building science principles, even to historical renovations, makes your home healthier for your family, more energy efficient, and more durable. A certified green builder make sure your beautiful home is also built smart, so that your house performs well today and tomorrow.