When someone builds a home for you, you have the opportunity to make it as sustainable, eco-friendly and energy-efficient as possible. Not only are sustainable homes more cost-effective over the long term, they have a smaller environmental impact, and can be more appealing to home-buyers when you’re ready to sell and move. In fact, more than half of Realtors report consumers are interested in sustainability, according to the National Association of Realtors’ REALTORS and Sustainability report. What’s more, 70 percent say a home’s efficient use of energy is important to potential buyers.