Granny flats installed on your block in days, not months.
Steel-frame granny flats made off site, craned into your backyard and finished by a registered Perth builder, on one fixed-price contract.
- 1–2 daysto install the module
- 27–64 m²studio to two-bed
- Fixed priceapprovals included
Built by Regional Construct Pty Ltd, registered building contractor BC105853.
Weeks in your backyard, not months
Most granny flats are built stick by stick in your yard over many months. Ours are made in a factory while we prepare your site, so the noisy, messy part is short.
Made off site
Your granny flat is built as a folding steel-frame module, with windows, linings, kitchen and bathroom fitted in the factory.
Site prepared at the same time
While it is being made, we lodge the building permit and prepare your slab, sewer, water and power.
Installed in one to two days
It arrives on a truck, is craned onto the slab and unfolded. The shell is up and weathertight almost straight away.
Connected and finished
Our licensed trades connect plumbing and electrical, we finish the details, and the building surveyor signs it off.
Choose your granny flat
Seven layouts from a 27 m² studio to a 64 m² two-bedroom, all within the 70 m² WA limit.
Built for how you will use it
Rental income
A self-contained home in your backyard that you can rent to anyone, with its own kitchen, bathroom and entry.
Rental layoutsFamily close by
Parents, adult kids or a carer next door, with their own front door and privacy.
Two 60 with studyStudio or office
A quiet studio, home office or guest suite without the cost of a full two-bedroom.
Studio 27Why build with us
A registered builder who installs the granny flat and takes responsibility for the whole job, not a showroom or a kit seller.
Fixed-price contract
One price in writing before work starts, under a WA home building contract, covering the flat, the site work and the connections we can see on the site visit.
Approvals handled
We check whether you need development approval, then prepare and lodge the building permit application.
Steel frame
Termite-proof G550 steel framing that won't warp, rot or shrink, with a Colorbond roof and insulated walls.
The builder on site
Registered builder Tom Finneran runs your job from site visit to handover, with licensed WA electricians and plumbers.
Questions Perth owners ask
How fast can you install a granny flat?
The granny flat is made in a factory as a folding steel-frame module. Once your slab and service connections are ready, it is craned onto your block and unfolded in about one to two days. Plumbing and electrical connections and finishing follow, so the time we spend working in your backyard is weeks, not months. Design, approvals and manufacturing happen before that, and your quote includes a timeline for your site.
Can I build a granny flat on my block?
Most Perth residential lots can take one. Since 2024 there is no minimum lot size in the R-Codes. A granny flat of up to 70 m² that meets the deemed-to-comply requirements does not need development approval, only a building permit. The module also needs crane and truck access, which we check on the free site visit.
How much does a granny flat cost in Perth?
Independent 2026 figures put a turnkey studio or one-bedroom at around $110,000 to $160,000 and a two-bedroom of about 60 m² at around $140,000 to $210,000, plus site works. Factory-made steel granny flats can come in under traditional builds. We give you a fixed-price quote after the site visit.
Can I rent out my granny flat?
Yes. In WA a granny flat no longer has to be lived in by a family member, so you can rent it to anyone. Talk to your accountant about tax and to your insurer before you do.
Who builds it?
Regional Construct Pty Ltd, registered building contractor BC105853, run by registered builder Tom Finneran. We prepare the site, install the granny flat, connect it and hand it over. You deal with the builder directly.
See what fits in your backyard
Book a free site visit. A registered builder checks your block, access and services, then sends a fixed-price quote.