How Homeowners in Perth Are Financing Their Granny Flats Building a granny flat in Perth is a...
Process
Tips from your local Granny Flat Buider in Perth
Process
Tips
Designs
Inspiration
Can You Turn a Garage Into a Granny Flat in Perth?
Thinking About Turning Your Garage Into a Granny Flat? Here’s What You Need to Know If you have an...
What You Need to Know Before Building a Granny Flat
What is a Granny Flat? Granny flats are becoming more popular across Perth and WA, and for a good...
What to Expect when Building a Granny Flat in Perth
Thinking About Building a Granny Flat? Here’s What to Expect Thinking about building a granny flat...
''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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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.

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.

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.




