Winner of Department of Energy's 2019 Housing Innovation Awards. This detached accessory dwelling unit (DADU) in the Greenlake neighborhood of Seattle is the perfect little getaway. With high ceilings, an open staircase looking down at the living space, and a yard surrounded by greenery, you feel as if you're in a garden cottage in the middle of the city. This detached accessory dwelling unit (DADU) in the Greenlake neighborhood of Seattle is the perfect little getaway. With high ceilings, an open staircase looking down at the living space, and a yard surrounded by greenery, you feel as if you're in a garden cottage in the middle of the city. Photography by Robert Brittingham