The Coach Houses and Granny Flats of the next generation are opening opportunities to test and research the latest energy efficient designs, technologies, and materials. We use Passive House principles with sustainable building materials and technologies in order to optimize space and energy use throughout the seasons. Well above 100,000 backyards in the Greater Toronto Area have the excess space needed for a DADU (Detached Accessory Dwelling Unit) commonly known as laneway houses.