Granny Flats

For many young adults in Perth, buying a first home is tougher than ever. With property prices climbing, lending rules tightening, and rental costs hitting record highs, the dream of independence can feel out of reach.

That’s why a growing number of Perth parents are stepping in, by building a granny flat.

Far more than just an extra room, a granny flat is a fully self-contained home designed to provide independence while keeping family close. It’s a smart, flexible solution for families who want to give their adult children a head start while also investing in their own future.

Why More Perth Parents Are Choosing Granny Flats 

Housing Affordability Pressures

According to REIWA, Perth’s median house price now sits at $805,000. For many young adults, saving for a deposit feels out of reach, and renting is increasingly difficult with low vacancy rates and rising weekly rents.

By building a granny flat, parents can help ease the financial burden by giving their kids:

  • Affordable accommodation compared to renting
  • A stepping stone before buying their own home
  • The support of family, without sacrificing independence

With demand for granny flats in Perth continuing to grow, more families are seeing this as a smart investment and practical solution.

Supporting Adult Children’s Independence

A Summit Granny Flat is a home in its own right – featuring a kitchen, bathroom, living area, and bedroom. Our thoughtfully designed granny flat designs give your child the freedom to live independently, while still enjoying the support of being close to family.

This makes granny flats a popular option for:

  • University students wanting to save while they study
  • Young professionals saving for a home deposit
  • Adult children in transition whether starting a new job, separating, or returning from travel.

The Benefits of a Granny Flat for Families

A Smart Long-Term Investment 

Beyond helping your child, a granny flat adds significant value to your property. Once your child moves out, it can be used for visiting family, elderly parents, or even as a rental income stream.

Flexible, Future-Proof Living 

Summit offers a range of modern granny flat designs to suit every family’s needs. For example:

  • The Allar Detached Studio is a stylish one-bedroom option, perfect for young adults who need affordability and comfort.
  • The Tora features two bedrooms, ideal if your child wants to share with a partner or friend while still enjoying their own space.
  • The Astaire includes an open-plan living area and private outdoor courtyard, offering the lifestyle appeal many young adults crave.

These designs ensure your investment works for your family’s needs now, and well into the future.

Close, but Not Too Close 

Unlike sharing one roof, a granny flat creates healthy boundaries. Families can share meals or provide support when needed, but everyone retains their own private space.

Read our latest Cloverdale case study to see how Eddie and Jane helped their son get ahead while future-proofing their property.

How Summit Granny Flats Make It Easy

At Summit Granny Flats, we’ve seen a sharp increase in Perth parents building granny flats for their adult children, and for good reason. We make the process simple by managing everything from planning and council approvals to construction.

Our granny flats are designed for modern living with flexibility and comfort in mind:

  • Open-plan layouts that maximise usable space
  • Smart storage solutions for compact homes
  • Private outdoor courtyards or alfresco areas
  • A range of designs to suit different budgets and family needs

Explore our Granny Flat Designs and find the perfect solution for your family.

Giving Your Child a Head Start

For Perth families, granny flats are no longer just for ageing parents. They’ve become a practical, future-focused way to support adult children, ease financial stress, and invest in your property’s long-term value.

By choosing a Summit Granny Flat, you’re not only providing your child with independence and stability, you’re also making a smart investment for your family’s future.

Ready to explore your options? Contact our team today and discover how easy it is to build a granny flat with Summit.

Frequently Asked Questions:

Can a granny flat be built on any Perth property?

Under the R codes 2024, Granny flats are now permitted on properties under 450m², however requirements can differ between councils. Summit Granny Flats will guide you through site suitability and approvals.

How much does it cost to build a granny flat in Perth?

The cost of building a granny flat depends on factors such as design, size, and site conditions. At Summit Granny Flats, we offer a wide range of affordable designs to suit different needs and budgets.

As a guide:

  • 50sqm granny flats start from $160,500* — allow approximately $15,000 for finishes.
  • 70sqm granny flats start from $179,245* — allow approximately $20,000 for finishes.

Please note that site works are priced specific to each site and may vary depending on your property’s conditions.

Can the granny flat be rented out in the future?

Yes. In many Perth councils, granny flats can be rented to either family members or tenants, providing an additional source of income. However, regulations vary between councils, so it’s important to check local requirements. Our team can assist you through this process and help confirm what applies to your area.