This all-electric, vaulted-ceiling, 699-square-foot backyard cottage is highly energy efficient, including solar power and battery backup.

Beautifully designed with quality finishes and custom cabinetry, the accessory dwelling unit (ADU) features clerestory windows, ADA accessibility, and ample storage space. The north-facing operable windows provide natural light and ventilation.

The cottage features dual walls with R-30 insulation in between, plus 2-inch continuous exterior insulation, an innovative construction technique that enhances structural integrity by minimizing penetrations. The high sound transmission coefficient rating makes it very quiet while reducing heat gain and loss.

The 6-kilowatt solar photovoltaic system produces all the electricity needed, while backup battery storage provides power for three or more days in an emergency power-loss situation.