Granny flats are one of the easiest ways to add more liveable space to your property. Their versatility allows you to rent them out, comfortably house guests or create a dedicated home office.
The best bit? However you use one, you’ve already added value to your property.
In previous blogs, we’ve explored why taking the prefab path is the fastest way to build a minor dwelling such as a granny flat. But how much will a project like this actually cost?
That’s what we’re diving into here. Specifically, the key factors impacting the cost of prefab granny flats, why the prefabricated approach is a cost-certain choice and what designs will work for you.
Everyone has different ideas, needs and sites to manage. So it’s worth knowing what factors impact the final cost – no matter how you choose to build.
Because when it comes to granny flat costs, you’ll need to think about:
The big question: how does prefab save you time (and create cost-certainty)? Read on.
One of the biggest influencers of cost is, of course, your method of building. And prefab undoubtedly gives you a significant advantage.
Why? Because, unlike traditional builds which happen solely onsite, prefabricated ones are largely done offsite in a factory. This means your project isn’t impacted by weather or other site challenges. And that means your timeframe isn’t pushed out (and your budget isn’t pushed up).
At Advance Build, we take the time upfront to consider all the costs of a project. This detailed, transparent pricing gives you a clear understanding of the budget you need – and peace of mind that it won’t change along the way.
Essentially, it comes down to these key factors:
We’ve outlined why prefab is the most cost-certain way to build. But what exactly will you end up with?
Ultimately, it’s up to you! We have a wide range of floorplans to choose from – all of which are high-quality, modern and customisable.
Our most popular prefab granny flat designs are the Oasis 1 and the Kemp 1. The Oasis 1 is a generously-sized minor dwelling (60m²), with 2 bedrooms and plenty of living space. The Kemp 1 is a slightly smaller (47m²) 1-bedder – and a great option if you’ve got less space to work with.
Not sure what you need? Speak to one of our experts.
Absolutely. While these changes can impact the final cost*, they also allow you to truly personalise your granny flat . Some of the most common upgraded features include:
Need inspiration? You can explore all our floorplans and the latest pricing here.
*Regardless of the design you choose, your final price will depend on the size, layout, customisations, and site conditions of your build, as well as your local council’s fees.
Without a doubt, construction projects are less stressful when your finances are sorted. At Advance Build, we offer bridging finance to help manage your funding. You can choose from three flexible finance options – each with varying fees, deposits and payment schedules to suit your needs.
Consider a prefab one. It’s the quickest, most cost-effective way to increase your livable space – and your property’s value.
Request a tailored quote today from an Advance Build expert.
What’s included in the Advance Build price?
We offer a complete turn-key service for all our builds. That means your final cost includes design, planning, project management and construction.
Typically, your overall project cost includes:
We provide a transparent breakdown upfront, so you know exactly what your investment covers.
How do site conditions affect cost?
Each site is different, but sites that are steep or difficult to access may incur higher costs. Steep sites will probably need more earthworks and retaining walls, while remote ones may cost more in terms of delivery and logistics.
Can I customise my design?
Yes! We have a wide range of floorplans to choose from – all of which you can customise to suit your unique needs.