In Riverwalk, a cottage community in Concord, Mass., homes surround a common green, enhancing a sense of community and expanding living space outdoors.
Every home is wired for solar panels, and residents can opt to have them included at the time of purchase or add them later on.
While homes and lot sizes were kept relatively small, planting space allows downsizing homeowners to continue gardening.
A common open-air fireplace offers buyers outdoor living space and a place to gather.
