There are some small sustainable homes designs that you can find in the world. You can copy one of best sustainable home designs from some architects in the world. One of the most interesting sustainable homes in the world is sustainable bio house that is made by Spanish architect. This house is attractive because we can find hydroponic rooftop garden. This sustainable home is a home with futuristic design and style. This home is not only beautiful home but you can get function, purposes and social conscience in this home design. There are some other sustainable home designs from some other architect that you can copy.