Rowhouse — Blog — The Sessoms Group

How Can Accessory Dwelling Units Help Seattle?

Many people have heard of mother-in-law apartments before. These units are attached to a home and are also called Accessory Dwelling Units (ADUs). In the city of Seattle, an ADU is limited to 1,000 square feet in a single-family structure and up to 650 square feet in a rowhouse or townhouse.

RegulationsRSIR Digital TeamMarch 26, 2018Mother-in-Law, Accessory Dwelling units, ADU, Seattle, Rowhouse, Townhouse, Detached Accessory Dwelling Unit, DADU