Locally Trusted Granny Flat Builder In Adelaide

For trusted & reliable granny flat construction services in Adelaide, schedule your free quote with Bella Carpentry and speak to our friendly team today!

Providing Expert Solutions Since 2009

Locally Trusted Granny Flat Builder Near Me

At Bella Carpentry, we specialise in designing and building custom granny flats that blend seamlessly into your property while maximising functionality, comfort, and aesthetic value. Whether you’re creating extra living space for family, planning a home office, or investing in a compact rental, our granny flats are a smart, versatile solution.

We treat every granny flat as more than just an add-on—it’s a personalised living space built with care. Our team works closely with you through every step, from concept to completion, ensuring the final build is both functional and visually aligned with your home. Whether you’re after a comfortable haven for aging parents, a private space for adult children, or a stylish income-generating unit, Bella Carpentry delivers custom granny flats Adelaide homeowners trust.

What Our Clients In Adelaide Are Saying...

What the local community says about our carpentry services.

Shannon built our pergola. Quality build, looks good, fair pricing. Shannon clearly has plenty of experience so his advice to any of our questions was spot on.

Adam Ruggiero Verified Google Review

Thanks Shannon and team turning a dilapidated stable into an amazing outdoor studio. Couldn’t have done it without his skill and expertise. He took our tight timeline and performed some magic. Thanks Shannon.

Robert Thomas Verified Google Review

Bella Carpentry ( AIH constructions ) did some deck repairs for me this week. I have no hesitation in highly recommending Shannon and his team, and I will definitely be utilising their services again in the future.

Tori Tassone Verified Google Review

Shannon and the team at Bella Carpentry were able to remove a wall for me on short notice and completed the work to a high standard. They got the job done quickly with attention to detail.and I would happily use them again.

Jordan Tiekstra Verified Google Review

Our Expert Workmanship

Scroll through to view our most recent projects.

Why The Adelaide Community Trusts Bella Carpentry

At Bella Carpentry, we specialise in delivering a wide range of services to enhance your home and outdoor spaces. From cladding, decking, and eave lining to home extensions, new frames, and outdoor feature walls, we bring precision and quality to every project.

Whether you’re creating outdoor rooms, converting a garage or shed, replacing gutters and fascia, building a pergola, or undertaking renovations and alterations, our experienced team works with you to bring your vision to life with exceptional craftsmanship and attention to detail. If you’re looking for the best carpenter Adelaide has to offer, you’re in the right place!

See Our Full Range Of Carpentry Services

Frequently Asked Questions

How much does a granny flat cost to build in Adelaide?

Most granny flats in Adelaide cost between $120,000 and $250,000, or roughly $2,500 to $4,200 per square metre. A custom one-bedroom build typically sits around $130,000 to $180,000, while a two-bedroom pushes past $170,000. Converting an existing garage is the cheapest way in at $40,000 to $90,000. The bathroom and kitchen are where budgets are won or lost, so that’s the first thing we’ll talk through with you. Our complete granny flat cost guide breaks down exactly where the money goes, or you can also read about garage conversions in Adelaide if you already have a structure to work with.

Do I need council approval to build a granny flat in South Australia?

es, always. A granny flat is classed as ancillary accommodation and needs development approval through the SA Planning Portal before any work starts — there’s no exemption, and portable or relocatable units are no different. The upside is that most standard builds qualify for the Deemed-to-Satisfy pathway, which is faster and more predictable than a full merit assessment. We prepare the drawings and lodge the application as part of the build, so you’re not navigating the portal on your own.

Can I put a granny flat on my property?

In most cases yes, provided the flat sits on the same allotment as the existing house and shares its utility connections. What determines it in practice is your block: you need enough space to meet setback requirements from boundaries, retain private open space for the main dwelling, and keep reasonable access to the rear. Older Adelaide blocks are often deep and narrow, which usually works well. We’ll do a site assessment before you spend anything on design.

How big can a granny flat be in SA?

South Australia caps ancillary accommodation at 70 square metres of floor area with a maximum of two bedrooms. That’s a genuinely liveable footprint — enough for two bedrooms, a bathroom, and an open-plan kitchen and living area. Verandahs and outdoor areas generally sit outside the calculation, so a well-designed flat can feel considerably larger than 70 square metres by opening onto a covered deck.

Does a granny flat add value to your property?

Generally yes, on two fronts. It adds liveable floor area, and it adds an income stream, which valuers treat differently to a straight renovation. A well-built flat on a suitable block typically returns a good share of its build cost in valuation, plus ongoing rent. The qualifier is build quality and design: a flat that looks like an afterthought bolted to the back fence can drag on a sale. Ours are built to match the main house, the same as our home renovations.

Can I rent out a granny flat in Adelaide?

Yes. South Australia removed the old restriction that limited occupancy to relatives, so an approved granny flat can now be rented to anyone on the open market. It still has to share the allotment and utility connections with the main dwelling, and it can’t be sold off separately or subdivided. For a lot of Adelaide homeowners this is what makes the numbers work, turning unused backyard into a rental return.

How long does it take to build a granny flat?

Allow around 12 to 20 weeks on site for a custom build, depending on size and how much site work the block needs. Development approval sits ahead of that and typically takes four to eight weeks, so the realistic end-to-end timeline is about five to seven months from first conversation to handover. A garage conversion is considerably quicker at roughly six to ten weeks, because the slab, walls and roof already exist.

What granny flat designs can you build?

We build to your block rather than from a fixed catalogue, but the two configurations that suit most Adelaide sites are a one-bedroom flat of around 50 square metres and a two-bedroom of 60 to 70 square metres. Both usually run an open-plan kitchen and living area at the front with bedrooms and bathroom to the rear. Orientation matters more than plan choice here — getting northern light into the living area makes a small space feel much bigger. Have a look through our recent projects to see what we’ve built.

Is a prefab or kit granny flat cheaper than a custom build?

Upfront, yes — kit and prefab units typically land between $90,000 and $150,000 against $130,000 to $250,000 for custom. But that headline price rarely includes site works, footings, utility connections, or the approval process, and those extras close a lot of the gap. A kit also has to suit your block as-is, which is a real constraint on sloping or irregular Adelaide sites. A custom build costs more but uses every metre of the space you actually have.

What exactly is a granny flat?

It’s a self-contained secondary dwelling on the same block as an existing house, with its own bedroom, bathroom, kitchen and living space. In South Australian planning terms it’s called ancillary accommodation. Despite the name, they’re rarely just for grandparents these days — most of the ones we build in Adelaide house adult children, run as rentals, or work as a home office and guest space combined.

Get in Touch With Us

Ready to start your next carpentry project? Our experienced team is here to guide you and deliver outstanding results tailored to your needs.