Retirees Bette Presley, Dani and Adele are making big commitments to a sustainable lifestyle by moving into customized tiny homes. Solar power, small-scale appliances, and space efficiency characterize these sustainable houses. Retiree Dani’s, a disabled widow, has constructed an accessible home with a custom wheelchair ramp and a wide-set front entrance. A custom made chair lift transports her to her sleeping loft. Photo credit: inhabitat