Building a granny flat can set you up for life, with the chance to create extra space, make extra money, and configure your household how you want to.
Why build a granny flat?
There are so many reasons to build a granny flat. You can add value and space to your home, and even develop a passive income stream too. And, with our streamlined processes, you can have the build completed in 10-14 weeks. Our experience means you can have the extra space you want quickly, and with less hassle too.
Adding value to your home
Building a granny flat is a great way of adding value to your home. Creating an extra bedroom or living space automatically broadens the range of people who may be interested in buying your home. And it’s within budget too – our affordable granny flats start from $130,000.
Whether your granny flat is attached or detached, your home now appeals to multi-generational buyers, or those who are looking for rental opportunities at the property too.
The potential for passive income
If you build a granny flat, you have the chance to rent it out. You could choose to let it for either a long-term or short-term, or rent it out using Airbnb. This is a very popular way to utilise your granny flat but you will need to check your local council’s requirements if you go down this road.

Customise your perfect space
There are plenty of other ways to use the space. Perhaps you’ve always dreamed of an adult retreat or would prefer to create a teenage rumpus room so your actual home can go back to being an adult retreat. Granny Flats WA offers fully customisable options, so if our designs don’t quite do what you need, our modifications can.
Office pods
Granny flats make great home offices or pods to save you time and money commuting. A home office pod is a structure built on your property, much like a granny flat.
They’re built in a similar way and you need many of the same approval processes for building. Whether it’s an office pod or a granny flat, Granny Flats WA can take care of it for you.
Teenage rumpus
You could also choose to turn your granny flat into a teenage entertainment area. Knowing that your teens are still under your roof, but at a safe distance, is great for peace of mind, and harmonious living.
Multi-generational living
Granny flats play a huge part in the rise of multi-generational living. At Granny Flats WA, we’re extremely experienced in creating homes that are easy to access for those with limited mobility and we can ensure the rest of your floor plan and interiors is a safe space for aging parents.


SEAMLESS GRANNY FLATS
Building a granny flat is one of the smartest ways to create space, unlock extra income, and future-proof your home. Whether it’s for family, work, or rental, our granny flats are designed to fit seamlessly with your property and lifestyle.
With streamlined approvals, custom designs, and 25+ years of experience, we make the entire process fast, stress-free, and affordable — starting from just $130k.
Why choose Granny Flats WA
Granny Flats WA has been creating high quality granny flats for over 25 years, so we know exactly what you need for a swift and smooth build. We’re family-owned so we understand the importance of getting things right for your family home. We’ve streamlined our processes over the last two decades, so we can promise you an efficient and enjoyable building experience from the moment you step into our showroom.
Speed
Our average build time is 10-14 weeks and we work hard to make sure our build is as stress-free for you as possible.
We’re one of the best granny flat builders in Perth, and our experience shows the second you walk into our showroom. We have three fully completed granny flats showcasing our designs, and we can even provide you with a quote for a quick build granny flat on the spot.
Experience
Granny Flats WA prides itself on only working with the best, most experienced contractors. Our 25 years of experience means there isn’t a problem we haven’t solved, which is where our reputation for superior workmanship and client satisfaction comes from.
Tight access specialty
Granny Flats WA has the skill and expertise to work on projects with tight access. We can work on blocks that modular builds can’t access and we have the experience to come up with solutions that other builders might not think of. If you’re worried that your block is too small or narrow to house a granny flat, come into the showroom or give us a call. We might come up with a solution that surprises you.
Process
We deliver the steel framework of your granny flat to your block, streamlining the process, then everything else is built on site. Our process combines the speed of a modular build with the reliability of a traditional one, giving you the best of both worlds.
Constructing this way allows us to offer the most competitive timeframes and cost effective pricing.
Granny flat designs Perth: Choose your perfect option
Check out some of our designs to see what kind of granny flat would suit you. If you don’t find one that feels right for you, we can also customise our designs to create something tailored for you.

STUDIO GRANNY FLATS

1 BEDROOM GRANNY FLATS

2 BEDROOM GRANNY FLATS
TESTIMONIALS




FAQs ABOUT Granny Flats
As both a design and build construction company, Granny Flats WA undertakes the whole process from on site design and consult, professional drafting, council approvals, full construction, painting and decorating and in most cases air-conditioning.
Steel frame room additions can be completed in as little as 6 weeks. Adding a bathroom can add another 2 to 3 weeks. Building in brick will extend the time of the build due to more trades being involved.
SHOWROOM DETAILS
Based south of the river in Booragoon our show room offers 3 indoor granny flat displays.
Phone: 08 9329 6888
Email: [email protected]
We are happy to arrange a time to meet at the showroom after open hours, anytime suitable to your availability.