Granny Flats Adelaide
Custom-built granny flats for Adelaide homes — insulated, self-contained and built to last
Granny Flat Regulations in Adelaide — What You Need to Know
In South Australia, granny flats (formally called “secondary dwellings”) are governed by the Planning and Design Code. Key rules as of 2026:
- Maximum floor area: Up to 60m² for a secondary dwelling (in most residential zones). Some zones allow larger — your council zone determines the limit.
- One secondary dwelling per allotment: Only one granny flat is permitted per residential property.
- Setbacks: Must meet standard boundary setbacks for your zone — typically 3m from the rear boundary and 0.9m from a side boundary for a single-storey structure.
- Development Approval: Most granny flats in SA require a DA (Development Application) unless the project meets “Deemed to Satisfy” criteria under the Planning and Design Code. SAQHI can guide you through this process.
- Connection to services: The granny flat must be connected to your property’s existing water, sewer and electricity services.
Council requirements can vary, and regulations are updated periodically. We recommend speaking with your local council and our team before committing to a design. SAQHI has navigated countless DA applications and can help make the process straightforward.
How Much Does a Granny Flat Cost in Adelaide?
The cost of a granny flat in Adelaide varies depending on the size, design, level of finish, and whether site preparation or service connections are required. Rather than quote a figure that may not apply to your property, we provide a free, obligation-free quote after assessing your block and requirements in person.
What we can say: a professionally built, fully insulated, self-contained granny flat from SAQHI is a significant investment — and one that can generate rental income, increase your property’s value, and provide decades of use.
Frequently Asked Questions
Can I rent out my granny flat in Adelaide?
Yes. In South Australia, secondary dwellings can be rented out to tenants (not just family members). Rental income from a granny flat can significantly offset the cost of construction over time. Your granny flat must comply with the Residential Tenancies Act if rented.
How long does it take to build a granny flat?
Construction typically takes 6–12 weeks once approvals are in place. DA processing times vary by council — allow 4–8 weeks for approval in most metropolitan areas. SAQHI can advise on the full project timeline at quoting stage.
Does a granny flat need its own address?
A secondary dwelling on the same title as your primary home does not require a separate address for construction purposes. However, if you plan to rent it out commercially, you may need to apply for a separate address through your council.
What’s the difference between a granny flat and a rumpus room?
A granny flat is a fully self-contained dwelling with its own kitchen, bathroom, bedroom and living area — it functions as a complete home. A rumpus room or pavilion is a non-habitable structure (no kitchen or full bathroom) used as additional living or entertainment space. Different planning rules apply to each.
What Is a Granny Flat?
A granny flat is a self-contained secondary dwelling built on the same property as your main home. It has its own bedroom, bathroom, kitchen and living area — everything a person needs to live independently.
At SA Quality Home Improvements, we build granny flats using the same high-quality insulated steel-frame construction as our rumpus rooms and pavilions. The result is a structure that’s comfortable year-round, built to last, and designed to complement your existing home.
Whether you need space for ageing parents, an adult child, or want to generate rental income, we’ll design and build a granny flat that suits your block, your budget and your lifestyle.
Build a Granny Flat on Your Adelaide Property
Licensed SA builders · Insulated steel-frame construction · Free, no-obligation quotes
Get a Free QuoteCommon Uses for a Granny Flat
Every family’s needs are different. Here’s how Adelaide homeowners are using their granny flats.
Ageing Parents
Keep mum or dad close while giving them their own private, accessible space. No stairs, no shared bathrooms, no loss of independence.
Adult Children
Give your grown kids a self-contained base while they save for their own home — without the tension of sharing the main house.
Rental Income
Turn your backyard into an income stream. A well-built granny flat can generate $300–$500/week in Adelaide’s current rental market.
Home Office or Studio
A fully insulated, separate structure is ideal for working from home, a creative studio, or a guest suite for visiting family.
Why Choose SAQHI to Build Your Granny Flat?
- Licensed SA builder with 35+ years experience
- Fully insulated steel-frame construction — comfortable in all seasons
- We manage council approvals and engineering from start to finish
- Colorbond® accredited — 30-year Bluescope steel warranty
- Most builds completed within a week
- Before-and-after photos provided, dedicated site supervisor throughout
- Finance options available through Handypay
We’ve been building secondary dwellings and insulated structures across Adelaide for nearly two decades. Our team handles everything from design and approvals through to construction and handover, so you’re never left coordinating multiple trades.
Yes. In South Australia, secondary dwellings typically require Development Approval from your local council. The rules vary by council area, block size, and dwelling configuration. SA Quality Home Improvements manages the approval process on your behalf, including engineering drawings and lodgement.
Costs vary depending on size, finishes, and site conditions, but most granny flat builds by SA Quality Home Improvements range from $60,000 to $120,000+. We provide a free, no-obligation quote tailored to your specific block and requirements.
Once approvals are in place, most of our granny flat builds are completed within a week. The approvals process typically takes 4–8 weeks depending on your council. Our team guides you through every step so there are no surprises.
Yes. Granny flats (secondary dwellings) can be rented to third parties in South Australia subject to council approval and zoning. Many Adelaide homeowners use them as an investment to generate rental income of $300–$500 per week.
Under the South Australian Planning and Design Code, a secondary dwelling must generally be no more than 60m² of floor area, though this varies by zone and council area. Our team will advise you on the rules applicable to your specific property.
Not every block is suitable. Minimum land sizes and setback requirements apply depending on your zone. SA Quality Home Improvements will assess your property during the free consultation and advise whether a granny flat is feasible and what size is possible.
Ready to Add a Granny Flat to Your Property?
Licensed SA builders · Free site assessment · Approvals managed for you
Get a Free QuoteSAQHI’s granny flats are constructed using Colorbond® steel — strong, beautiful and durable, and manufactured to Australian Standards. Designed to endure Adelaide’s climate for the long haul, your new granny flat will look great and perform reliably for decades.
Colorbond® Steel Construction — Designed for Adelaide
Colorbond® steel is tried and tested in Australian conditions — with five layers of protection, it’s built to handle everything Adelaide’s summers and winters throw at it. Choose from Monument®, Surfmist®, Woodland Grey®, Classic Cream® and more to ensure your new granny flat seamlessly complements your existing home.