Detached ADUs are free-standing structures that are added to properties which have an existing primary home. They are commonly referred to as “granny-flats”, “backyard cottages”, “in-law units”, or “tiny homes”.
This type of ADU generally provides the most privacy for both the party living there and in the main house. It is easy to make separate entrances and ensure the inhabitants of both houses can live independently of one another.
The downsides here are that some properties do not have the room for a detached unit and the permitting process can be more complex in some areas.