Can I build a granny flat (secondary dwelling), and what approval does it need?

Many councils allow a granny flat on a residential lot, but the size, setbacks, approval pathway and whether it can be rented out differ by state and council. In NSW, some granny flats can be approved as complying development, while other states use their own pathways and limits. You will usually need building approval, separate or shared services, and may pay extra council or utility charges. Check the rules for your lot before you design.

General information only. Requirements vary by state or territory and change over time, so check the current rules for your location.