Under new California state laws, the term “accessory dwelling unit” describes a small, self-contained residential unit located on the same lot as an existing single-family home. An ADU is generally smaller in size while still including all of the basic amenities found in a primary dwelling, such as a kitchen, bathroom and sleeping area.
There are three types of Accessory Dwelling Units (ADUs): interior, attached, and detached ADUs.
- Interior ADU – Located in the primary dwelling, an interior ADU is built from existing converted space, usually an attic or basement.
This is a great option if you have a house with two entrances and in general you don’t use all the space.
- Attached ADU – These additions adjoin the primary dwelling – to the side or rear of the home, or constructed on top of an attached garage.
This is another great option for those who want to have a seperate house and keep their parents or children near them.
In case you need an additional income, you can give your attached ADU’s for rent.
- Detached ADU – A stand-alone structure separate from the primary dwelling. A detached ADU can be built as entirely separate unit or constructed over an existing accessory structure, such as a detached garage. The detached ADU’s are better for supplemental income, as you can give them for rent with more money than in case of Interior ADU or Attached ADU.