10 Smart Ways to Use a Granny Flat in Perth

Granny Flats: More Than Just Extra Space

Granny flats have become one of the most versatile additions to homes in Perth. Whether you’re looking for rental income, a space for family, or even a home office, a well-designed granny flat can serve multiple purposes.

As an experienced granny flat builder in Perth, I’ve seen homeowners use granny flats in creative and practical ways. If you’re considering building a granny flat, here are 10 smart ways to make the most of your space.

1. Rent It Out for Extra Income

One of the most popular reasons to build a granny flat in Perth is to generate rental income. With demand for affordable housing on the rise, granny flats can bring in $300–$500 per week in rental income.

Whether you list it as a long-term rental or explore short-term options like Airbnb, a granny flat can quickly become a profitable investment.

2. Provide Independent Living for Family Members

Granny flats were originally designed for elderly parents, but they’re also perfect for adult children, extended family, or even live-in carers.

Having a fully self-contained space means your family members can live close to home while maintaining their independence—a great solution for multi-generational living. Considerations are also being made in accessible granny flat designs to allow elderly family to live close while still having their own privacy.

3. Create a Home Office or Business Space

With more people working remotely, granny flats in Perth are becoming popular as home offices or business studios.

Instead of working from the dining table, a granny flat can be converted into:

  • A private office with no distractions.
  • A consulting space for meeting clients.
  • A studio for creatives like photographers, artists, or musicians.

If you run a small business from home, a granny flat can also help separate work life from home life.

4. Turn It Into a Guest House

If you love hosting family and friends, a granny flat can be a private retreat for visitors. Instead of sharing your main house, guests can enjoy their own bedroom, bathroom, and kitchenette—making their stay more comfortable and enjoyable.

This is especially useful if you have relatives from out of town or plan to host visitors regularly.

5. Pool Room Granny Flat Designs 

A pool room granny flat is perfect for those warm Perth days when you want to relax poolside or entertain with ease. Designed with both comfort and practicality in mind, these granny flats can include a kitchenette, bathroom, and open-plan living area, making them fully self-contained. Whether you’re hosting guests or simply want a private space to unwind by the water, a pool house granny flat is the ultimate blend of function and lifestyle.

6. Convert It Into a Short-Term Rental (Airbnb)

If your property is in a high-demand area, a granny flat can be used as an Airbnb or short-stay rental. This option offers:

  • Higher rental income compared to long-term tenants.
  • Flexibility—you can block out dates when you need the space.
  • A way to earn extra income while keeping control over the property.

Before listing on Airbnb, check your local council regulations to ensure short-term rentals are allowed.

7. Use It as a Downsizing Option

If you’re planning to retire or downsize, a granny flat allows you to stay on your property while renting out the main house.

This option is perfect for:

  • Retirees looking for a smaller, low-maintenance home.
  • Homeowners who want rental income without selling their property.

It’s an affordable alternative to moving into a retirement village while still having family nearby.

8. Create a Hobby or Fitness Studio

A granny flat can be transformed into a dedicated space for your passions, such as:

  • An art or music studio for creativity.
  • A personal gym to avoid costly memberships.
  • A reading or writing retreat for quiet time.

Instead of cluttering your main house, a separate space for hobbies gives you room to focus and unwind.

9. Provide Housing for FIFO Workers

Perth has a large Fly-In Fly-Out (FIFO) workforce, and many FIFO workers prefer renting granny flats instead of apartments or shared housing.

If your property is near Perth Airport or major transport links, a granny flat can be an ideal rental option for FIFO workers who need a low-maintenance, private place to stay.

10. A Granny Flat Can Make Your Property More Appealing to Buyers

A well-designed granny flat can be a great selling point if you ever decide to put your home on the market. Many buyers find properties with self-contained secondary dwellings more attractive because they offer flexible living options—whether for rental income, multi-generational living, or extra space.

While property values depend on various factors, adding a functional, high-quality granny flat can make your home stand out and increase buyer interest when it’s time to sell.

Final Thoughts

Granny flats are incredibly versatile, offering countless ways to add value to your home and lifestyle. Whether you need extra living space, rental income, or a dedicated home office, a granny flat can be customised to suit your needs.

As an experienced granny flat builder in Perth, I can help you design a high-quality, functional granny flat that works for your current and future needs.

Thinking about building a granny flat? Contact Granny Flats By Hallmark for a free quote

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Grannyflats by Hallmark are Perth’s Best Granny Flat Builder. Based in Clarkson (Perth) and building Granny Flats Across Perth’s Northern Suburbs. Locally Owned and Operated by Mark Gethin

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''Perth’s Best Granny Flat Builder''

Here at Granny Flats by Hallmark we are so thankful for the wonderful people we get to work with on a daily basis. Our reviews speak for themselves with our clients always speaking highly of us and the job we have done for them

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Drew & Tamara Coulthard
28 July 2025
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We had a superb experience when Mark and his team built a custom designed garage and upstairs ancillary accommodation from our drafted plans. The project was delivered quite quickly in a very tight access space with minimal disruption to our backyard. Nothing was too much trouble as we changed a few things during the build. The tradespeople were all lovely, trustworthy, quality and professional. We would definitely look to Mark if we were to do a similar build again in the future. Thank you team for a great experience and putting us at ease for what can be a very stressful exercise.
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Elad Feldman
28 July 2025
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Hallmark did a great job building our granny flat. Mark was fantastic to deal with—honest, reliable, and made the whole process easy. The build was high quality and finished on time. Would happily recommend them to anyone!
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belinda o
28 July 2025
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We couldn't be happier with the experience we had with Hallmark Developments for our home addition. From start to finish, their quality of work was outstanding, with every detail handled meticulously. Mark and his team were extremely professional, always keeping us informed and providing honest advice that made the process smooth and worry-free. They were also impressively prompt, completing the project on time without cutting corners. It's rare to find a company that combines such high-quality craftsmanship with transparency and efficiency. We highly recommend Hallmark Developments to anyone looking for a reliable and skilled builder!"
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Fran
26 June 2025
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Had Mark build a large custom granny flat, from start to finish was amazing. Nothing was an issue and easy to work with. Highly recommend build to anyone thinking of putting an addition on their property Thank you mark wonderful job!
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Murray Woodington
2 April 2025
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Outstanding experience. From 1st consultation to handover we've been more than impressed with the first class service and attention to detail delivered by Mark and the team. We now have two amazing spaces to enjoy the wonderful West Oz lifestyle.
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Lolly Evans
2 October 2024
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A personalized, professional experience during these build works from Mark and his team. What we thought would be a nightmare at the back yard with noise, drilling, digging and more, turned out to be a fun experience with his team as we communicated, chatted, drank coffee or tea on the freezing days and just shared opinions about the growth of the works as they happened. Mark and team were always open to suggestions and feedback as works progressed, and this made the entire experience smooth running, to deadline, with a super quality finish, exceeding our expectations.. Thanks Hallmark!. Well done- John and Lauretta.

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Take a look at our range of thoughtfully designed granny flats, made to suit Perth families, investors, and homeowners alike. We specialise in Custom Designed Granny Flats so every design can be personalised to your liking. 

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See the real results we've delivered across Perth. From sleek finishes to clever use of space, our completed builds show the quality and care that goes into every granny flat we construct. Let these transformations inspire your own backyard project.

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There’s a lot that goes into building a granny flat but you don’t need to worry about that. We handle the big stuff like council approvals, design, and construction so you can focus on the exciting part! Here's what to expect when building a granny flat with us.