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Granny Flats

Move-in ready, customised granny flats.

The Astaire display opening hours

Open Monday to Friday 9am-4pm.
Saturday by appointment only.

Modern multi-generational living at its best

Granny flats offer a versatile and affordable living choice for a range of buyers, because let’s face it, a granny flat is no longer just for grannies.

From retirees wanting to downsize, parents looking for an independent space for their kids, or to those wanting their ageing parents to be close to family for a flexible, multi-generational living arrangement – a granny flat is an ideal solution.

Not only is a granny flat perfect for accommodating a family member, but it’s also presents a great short or long term rental investment opportunity, while maximising the potential of your backyard and is a smart and cost effective way to expand.

Visit the Astaire display Monday to Friday 9am-4pm or book an appointment to view on Saturday. 

Add value to your property

From your initial consultation through to handing over the keys, we believe you deserve a seamless building journey and a quality granny flat.

Summit will take care of your entire project from start to finish, beginning with creating you a customised design to best suit your needs, to ensuring all council approvals are managed efficiently.

We guarantee a low-fuss building journey and our dedicated approach to customer service is second to none.

Listen to Ronnie and Lorna Hurst's story about wanting to add value to their Attadale abode and support their daughter's family.

Visit the Astaire Display

Experience modern living first hand at Summit's granny flat display, the Astaire. 

With 70sqm of living space and luxury features, this two bedroom display presents a rare opportunity for you to walk through, touch and experience a granny flat first hand.

A stylish custom-designed kitchen with quality appliances, a spacious tiled bathroom, a European laundry and built-in robes to both bedrooms are just a few features of the Astaire.

Visit the Astaire display Monday to Friday 9am-4pm or book an appointment to view on Saturday. 

Explore the Astaire design

Why Summit Granny Flats?

A granny flat is a modern solution to create more space for your family through multigenerational living or a simple way to invest in property.

Here's a short video from one of our Granny Flat Specialist, Drew explaining how you can benefit by partnering with Summit for your project.

Premium Added Extras

Choose from our range of designs or customise your own granny flat and receive bonus extras such as reverse cycle air conditioning, interior and exterior painting, window treatments, quality floor coverings and your choice of stone benchtops or LED lighting.

With our range of one, two and three bedroom designs, from 40m2 through to 100m2, Summit can provide a tailored solution for you.

To speak to one of our Granny Flat Specialists, book an appointment today.

Granny Flat Process

As one of Perth's most awarded granny flat builders, Summit has a streamlined six step process, which means you can get the keys to your flat sooner. See for yourself how easy it is to build with us.

  • Step 1 out of 6

    Obligation Free Site Inspection

    One of our experienced Design Consultants will organise a time to meet with you at your home to discuss your ideas, dreams, wish list and budget.

  • Step 2 out of 6

    Design Meeting

    This is where your ideas come to life. Your Design Consultant presents you with a custom designed concept crafted to suit your lifestyle and budget. Your input is important, and your Design Consultant will listen and incorporate your feedback and ideas so you’re fully satisfied with the planned granny flat.

  • Step 3 out of 6

    Presentation Meeting

    We want your granny flat to be perfect and will present you with: (1) Final Plans, (2) HIA fixed price contract, (2) A full breakdown of what work we will be completing (specification of work). From here on in, we will look after the whole process including building permits with your local council.

  • Step 4 out of 6

    Prestart Meeting

    Meet with your Prestart Consultant at our stunning Style Studio to pick out your colour selections, fittings and fixtures.

  • Step 5 out of 6


    Your granny flat’s construction will be managed by your dedicated Site Supervisor and in as little as 10-12 weeks* you could be receiving your keys. *A final timeframe will be provided to you before site commencement.

  • Step 6 out of 6


    Simply move in and enjoy!


  • Drew was so patient and helpful during the design stage. He worked diligently with our original designer and landscaper as well as the company installing he pool to ensure that nothing would be compromised

    Kelly-Anne & Murray
  • We were quite particular about the look we wanted to achieve and the Granny Flat Design Consultant had clever suggestions to get the effect we wanted. We were kept informed at all stages of the build and everyone who worked on the building was considerate and kept the disruption to a minimum.

    Janet & David
  • The Summit Granny Flats team were very accommodating and helpful. Our Design Consultant was very courteous and helpful, nothing we requested was deemed to be unreasonable and he went out of his way to deliver us a brand new home which was on time, on budget and altogether, a very pleasant experience.

    Eric & Linda


    Whether you're considering building, renovating or developing our experts can guide you through the process.

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