An ADU, or accessory dwelling unit, is a secondary housing unit on a property zoned for residential use. It can be detached, attached, or integrated within the main house, featuring a full kitchen, bathroom, and separate entrance. Also known as “granny flats” or “in-law suites,” ADUs are a smart solution to housing shortages, versatile options for living spaces, guest accommodations, or home offices. They enhance property value while addressing community housing needs.