Your guide to building a secondary dwelling
Granny flats (also called secondary dwellings or ancillary accommodation) are one of the fastest-growing building segments in Adelaide. Whether for ageing parents, rental income, or a home office, building a granny flat requires specialist knowledge of council requirements and compact design.
A granny flat is a self-contained dwelling on the same block as a main house. In South Australia, they're officially called 'ancillary accommodation' and must meet specific planning rules. They typically include a bedroom, bathroom, living area, and kitchenette, ranging from 40-80 square metres.
Costs vary significantly based on site conditions, finishes, and whether services need extending. Get multiple quotes.
Check if your block suits a secondary dwelling
Create plans that meet code requirements
Lodge development application if required
Get quotes from experienced granny flat builders
Typically 3-6 months depending on complexity
Connect services and obtain occupancy certificate
Most granny flats require development approval in South Australia. Some may qualify as 'complying development' for faster approval if they meet specific criteria. Check with your local council or a planning consultant before proceeding.
Get independent advice on finding the right builder for your granny flat project.
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