Supertrades

Granny Flat Builders in Adelaide

Tell us what you need. Our AI helps you build a professional brief for vetted installers, and our team verifies it. Once the quotes roll in, our system automatically compares them so you get a detailed comparison of the best options.

Fully insured
No obligation quotes
Certified tradespeople
Serving Adelaide

How it works

Step 1

AI-assisted job brief

Describe your granny flat builders project using the AI assisted chat below. Our system transforms your answers into the perfect brief for local professionals.

Step 2

Smart quote comparison

Local tradespeople bid on your project while our AI analyses every offer. We highlight the top three recommendations and procvide a detailed comparison so you can choose with confidence.

Step 3

Connect and book

You get the full contact details for every installer who submitted a quote. Call your top match or any of the others to chat through the job details and get it scheduled.

AI-assisted job brief

Granny Flat Builders · Adelaide

90+ vetted professionals for Granny Flat Builders in our network available to quote.

Supertrades
Hi — I will help you brief your Granny Flat Builders in Adelaide. Are you looking at a custom build, prefab / transportable, or still comparing options for a backyard granny flat?

Local insights

We mapped the market so you don't have to

We fetched granny flat builders businesses in and around Adelaide from online sources, then analysed ratings, review volumes, and recent feedback with AI to surface patterns and a side-by-side comparison. Skim the numbers below, then scroll for the full rundown, cautions, and FAQs.

Snapshot - in and around Adelaide.

8

Suppliers in scope

4.8

Avg. Google rating

192

Reviews analysed

At a glance

Adelaide Granny Flat Builders suppliers

Compare local granny flat builders suppliers around Adelaide in one place. Each item shows star ratings, total reviews, distance from the centre of Adelaide, and an AI-assisted analysis of real customer feedback.

  • Austral Constructions Pty Ltd

    Google: 5.0 / 5 · 2 reviews · 5.0 km from search centre

    AI-assisted analysis of public reviews:

    Reviewers praise clear communication, a low-stress process, and strong attention to detail on extension work. The sample is very small, so the positive picture is based on only a couple of reviews.

  • Selecta Homes & Building Solutions

    Caution

    Google: 4.2 / 5 · 70 reviews · 19.9 km from search centre

    AI-assisted analysis of public reviews:

    Customers regularly highlight customisation, responsive staff, solid workmanship, and site managers who follow through on issues. The main negative theme is delayed build starts before construction gets underway, though reviews say the on-site phase then runs smoothly.

  • Kookaburra Homes - Builders Adelaide

    Google: 4.7 / 5 · 83 reviews · 2.8 km from search centre

    AI-assisted analysis of public reviews:

    Reviews consistently point to excellent communication, transparency, and a well-managed build process from design through handover. Workmanship and attention to detail are recurring strengths, with customers describing the experience as supportive and low stress.

  • BaseBuild Australia - Tiny Houses & Granny Flat Builders Adelaide

    Google: no rating · 0 reviews · 25.1 km from search centre

    AI-assisted analysis of public reviews:

    There are no review excerpts here, so there is not enough customer feedback to judge build quality or service patterns. Treat this as a listing with very limited public proof compared with more reviewed Adelaide options.

  • Adelaide Home Improvements Pty Ltd.

    Google: 4.9 / 5 · 28 reviews · 4.1 km from search centre

    AI-assisted analysis of public reviews:

    Reviewers repeatedly mention patient guidance, strong supervision, and responsive communication across renovation and extension projects. Quality finishes and value for money come up often, with teams described as organised and easy to deal with.

  • Austral Constructions | Granny Flats Adelaide

    Google: no rating · 0 reviews · 0.0 km from search centre

    AI-assisted analysis of public reviews:

    There are no review excerpts or visible rating signal to work from here. Buyers would need to do extra checking because the public review trail is much thinner than most alternatives in Adelaide.

  • Every Day Tiny Homes SA

    Google: 5.0 / 5 · 6 reviews · 30.4 km from search centre

    AI-assisted analysis of public reviews:

    Early feedback focuses on fast quoting, easy delivery arrangements, and friendly, helpful customer service. Review depth is limited and at least one reviewer had not yet received the home, so long-term build quality is less proven in this sample.

  • Greenspan Black Forest - by appointment

    Google: 5.0 / 5 · 3 reviews · 4.5 km from search centre

    AI-assisted analysis of public reviews:

    The small review set praises easy dealings, good materials, and notably quick replacement of a damaged item. It reads well for service and after-sales response, but the evidence base is still quite small.

Cross-Review AI Analysis

What locals are saying in Adelaide

AI-powered analysis of all of the customer reviews from multiple suppliers in the area.

Across these Adelaide listings, the strongest recurring praise is about communication, guidance through design and selections, and making the build feel less stressful. Workmanship, attention to detail, and supportive site managers are also common positives among the better-reviewed builders. The market does not look sparse, but the review depth varies a lot: a few businesses have substantial public feedback, while several have almost none. Where there is meaningful volume, Kookaburra Homes, Selecta Homes & Building Solutions, and Adelaide Home Improvements show the clearest consistency in customer comments. The main recurring complaint visible in this set is around delays before construction starts, rather than poor on-site execution once work begins. For some granny flat and tiny home specialists, the review pool is so small that buyers should be careful about drawing strong conclusions from ratings alone.

AI Review Red Flags

What to watch out for in Adelaide

These are automatically generated cautions based on our AI analysis of public customer reviews. For awareness only - always do your own due diligence.
  • Selecta Homes & Building Solutions

    • One detailed review described the build start date being pushed back multiple times.
    • Pre-construction waiting periods were frustrating in at least one account.
    • The broader 4.2 rating suggests more mixed sentiment than the supplied excerpts alone show, so low-star reviews are worth checking on Maps.

Local questions in Adelaide

Based on the supplied reviews, Kookaburra Homes, Selecta Homes & Building Solutions, and Adelaide Home Improvements have the strongest combination of review volume and consistent praise. Reviewers for these businesses repeatedly mention communication, workmanship, and a smoother-than-expected build process. Kookaburra and Selecta also stand out for detailed feedback about the full journey from design to handover.

Kookaburra Homes is very strong on this theme, with multiple reviewers saying the team kept them informed and addressed questions promptly. Adelaide Home Improvements also gets repeated praise for responsiveness and clear updates, especially through supervisors and design staff. Selecta Homes & Building Solutions is also well regarded here, particularly once the build is underway.

The clearest repeated concern is with Selecta Homes & Building Solutions, where one detailed review described the start date being pushed back several times before work began. That same review still praised the construction phase once it started, so the issue appears more about pre-start timing than finish quality. Outside of that, the supplied excerpts are heavily positive and do not show many repeated complaint patterns.

Kookaburra Homes and Adelaide Home Improvements are both repeatedly described in terms that suggest a smooth, low-stress process. Selecta Homes also gets this feedback for the active construction phase, with reviewers saying it flowed well once underway. Austral Constructions has similar comments, but only from a very small number of reviews.

A perfect rating from only a handful of reviews can be encouraging, but it is still a thinner signal than a high rating across dozens of reviews. In this set, businesses like Greenspan Black Forest and Every Day Tiny Homes SA sound promising, yet the comments are limited and less tested over time. By contrast, Kookaburra Homes, Selecta Homes & Building Solutions, and Adelaide Home Improvements have broader review histories that give a more reliable pattern.

Kookaburra Homes gets repeated praise for workmanship, finishes, and attention to detail across multiple reviews. Selecta Homes & Building Solutions also stands out, with customers describing the carpentry, finishing, and overall quality as outstanding. Adelaide Home Improvements is similarly well regarded for final finishes and quality control from supervisors and management.

Given the patterns in these reviews, ask how communication will work, who your site supervisor will be, and how issues or variations are handled. It is also worth asking about likely pre-start timing, especially if you are comparing with a builder where delays before commencement were mentioned. Reviewers clearly value teams that explain the process well and fix minor issues promptly after handover.

Estimate granny flat build cost in Adelaide

Turnkey-style midpoints for Australia. Pick size and build path. Slab, service connections, council approvals and landscaping are usually extra ($15k–$50k all-in).

Build type
Prefab is built off-site and craned in. Site-built is constructed on your block. Brick / custom is the premium path.
Estimated cost range
$106,250 - $143,750
$125,000 midpoint

Estimates are indicative only. For an accurate price, get free quotes from local tradies above.

General information

Granny Flat Builders in Adelaide

Expert Solutions for Your Backyard Granny Flats

Are you considering adding a granny flat to your property in Adelaide? Our platform connects you with professional granny flat builders ready to help you create the perfect space. Whether you need a custom granny flat or a portable granny flat, we have a network of skilled tradespeople who can provide quotes tailored to your needs.

Granny flats, also known as backyard grannies or granny apartments, are an excellent way to maximise your property’s potential. They offer additional living space for family members, guests, or as a rental opportunity. With our service, finding the right builder is quick and easy.

Why Choose Our Granny Flat Builders?

  • Wide network of experienced builders in Adelaide
  • Competitive quotes for all types of granny flats
  • Expert advice on granny flat construction and design
  • Assistance with council approvals and regulations
  • Customisable options to suit your budget and style

From brick granny flats to transportable granny flats, our builders can handle it all. You can trust that your granny flat construction will be completed to the highest standards, ensuring satisfaction for you and your future tenants.

What shapes your granny flat quote

Build type

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Build type

Custom site build versus prefab, portable, or transportable.

Frequently asked questions

The cost for granny flat construction varies based on size and specifications. It is best to check directly with Bunnings for their pricing on specific models.

Yes, in certain circumstances, you may be able to claim expenses related to a granny flat on your tax return, especially if it is used for income-producing purposes.

A budget of $400,000 can be adequate for building a house, but costs vary significantly based on location, design, and materials.

Yes, you can buy a block of land and place a granny flat on it, provided you comply with local zoning and building regulations.

The cheapest way to build a granny flat often involves opting for a prefabricated or modular design, which can significantly reduce labour costs.

Yes, adding a granny flat can increase the overall value of your property, especially in desirable locations.

The capital gains tax on a $300,000 property depends on various factors, including your tax status and how long you owned the property.

Yes, you typically need council approval to build a granny flat in Western Australia, so check with your local council for specific requirements.

Consider options like a garden shed conversion or a tiny home as cheaper alternatives to traditional granny flats.

Whether it is cheaper to build or buy depends on market conditions, but building can sometimes offer more value for money when considering long-term goals.

The most expensive part of building a house is often the construction itself, including materials and labour costs.

The average price range for a 2-bedroom granny flat in Perth can vary widely, typically falling between $100,000 and $200,000 depending on design and features.