Expert Granny Flat Builder Perth

Explore our portfolio of completed projects across Perth. From custom homes to granny flats, each project reflects our commitment to quality and craftsmanship.

Perth's Granny Flat Specialists

Over 100 granny flats built across Perth. A 7-month build time guarantee. Concrete slab, double brick construction built the same way we build every home we put our name on. When you’ve done something more than a hundred times, you stop guessing and start knowing. We know Perth’s councils, we know the regulations, and we know how to get your project approved, started, and finished without the runaround.

What Building with Armour Looks Like

Built Like a Real Home. Because It Is.

Concrete slab. Double brick walls. The same structural standards we apply to every custom home we build. Your granny flat won’t look or feel like a bolt-on it’ll look like it was always meant to be there.

7-Month Build Time. Guaranteed.

We back our process with a 7-month build time guarantee on granny flats. That’s not an estimate or a best case scenario. It’s a commitment because after 100-plus builds, we know exactly what it takes to deliver on time.

Ready to Get Started?

If you’re thinking about a granny flat, talk to a team that’s already built over a hundred of them. We’ll visit your site, walk you through your options, and give you a straight answer on what’s possible.

Our Granny Flat Designs

Browse our top granny flat designs—each one built with quality and customisable to fit your space and lifestyle.

The Retreat

Spacious and private, this 2-bedroom, 2-bathroom design is suited to families, multigenerational living or those wanting extra room to relax. Enjoy the benefits of a full-sized layout with a contemporary edge.

Custom Built. Not Cookie Cutter.

Most builders treat granny flats as an add-on. We’ve made them our specialty. Every Armour granny flat is custom designed for your block, your family, and your goals whether that’s housing ageing parents, generating rental income, or adding long-term value to your property. 

There are no standard packages pushed your way. We start on your site, assess your boundaries, setbacks, and block size, and design something that works with your existing home not against it. From there we handle everything: design, council approvals, planning submissions, and construction. You focus on the outcome. We handle the process.

Ready to build your granny flat?

Tell us a bit about what you’re looking for, and we’ll help you design a space that fits your block and lifestyle.

Project Gallery

Explore some of our most popular home designs, each crafted to suit a wide range of modern lifestyles — with the flexibility to customise features to make them truly your own.

Why Choose Armour Homes For Your Granny Flat?

Quality Craftsmanship

At Armour Homes, we pride ourselves on quality, using trusted home builders, with over 34 years' experience. Known for quality craftsmanship and personalised service, we've built a reputation for outstanding results and customer satisfaction.

Fast Build Times

Enjoy complete peace of mind with a guaranteed 7-month build time* and slab down in just 4 months*.

Flexible Finance Options

We make building accessible with our flexible financing options and specialised in-house brokers.

The Benefits of a Granny Flat

Get Started Today

If you’re ready to start on your project, we’re here to help. Give us a call on 08 6285 3123 and one of your friendly team members will get back to you. At Armour Homes, we combine creativity, craftsmanship, and care to bring your vision to life.