The Orange County metro area has 1 new home communities with available homes with energy efficient features. The 15 new green houses for sale in Orange County cost as little as $409,900, proving that investing in your dream home while protecting the environment does not have to break the bank. New green homes in Orange County range between 1,344 to 3,407 square feet, and have between 3 to 4 bedrooms and 2 to 3 bathrooms.