ADU stands for "Accessory Dwelling Unit." It refers to a self-contained living space that is usually added to an existing property. ADUs are secondary residential units that are built on the same lot as a primary dwelling, providing a separate housing option within a single-family residential area. These units are also known by various other names, such as granny flats, in-law suites, secondary suites, or backyard cottages.
ADUs can be either detached or attached to the primary residence, and they have their own separate entrance, kitchen, bathroom, and living space. They are intended to be an additional housing option that can be used by family members, relatives, friends, or rented out to provide affordable housing in high-demand areas.
Usually smaller in size compared to the primary residence, ADUs can vary in terms of their design and construction. They can be converted from existing structures like garages or basements, or newly constructed as an independent building on the property. They are a means to increase housing density without changing the character of a neighborhood, and can help address housing shortages or provide additional income for homeowners.
ADUs are subject to local zoning regulations and building codes, which may vary from one jurisdiction to another. Such regulations may specify requirements related to size, setback distances, parking, occupancy limits, and design guidelines. The popularity of ADUs has been increasing as they offer flexible housing options and have the potential to create additional affordable housing stock within existing communities.
