Prefab Homes · Fast Install · Western Australia
Your Backyard Home. Done.
WestMod Homes delivers fully custom expandable prefab homes — installed in your backyard in weeks, not months. Granny flats, secondary dwellings, and dual-income properties, done properly.
Expandable Prefab Homes
From design selection to keys in hand — we handle everything so you don't have to.
Granny Flat & Secondary Dwellings
Modern expandable prefab homes designed for Australian backyards. Fully finished, energy efficient, and ready to rent or use as family accommodation.
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Delivery & Installation
We organise the full delivery and installation from start to finish. Your home is built off-site, transported, and set up on your property — fast and hassle-free.
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Council Approval Package
We handle the council approval process for you — documentation, submissions, and follow-up. One less thing on your plate.
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AS & NCC Compliant
WestMod Expanders are built to meet both Australian Standards (AS) and the National Construction Code (NCC). Every unit is designed to satisfy the requirements your council and certifier need to see — no shortcuts.
Engineered for Australian Conditions
Each home is independently engineer-certified with a focus on structural performance in the Australian climate. Heavy-duty galvanised steel frames, double-glazed windows, and thermally insulated walls mean these homes are built to last.
Council Approval Ready
We manage the paperwork, not just the build. WestMod guides you through the council approval process from start to finish — providing the documentation, certifications, and support you need to get your home approved and installed.
Find the Right Fit
Perfect for a compact granny flat or secondary dwelling. Efficient use of space without sacrificing comfort.
A versatile mid-size option with room for a full kitchen, bathroom, living area, and bedroom.
Our largest model. Available at 80m² or reduced to 70m² — ideal for WA properties where planning approval may not be required for granny flats under 70m².
Western Australia's Prefab Home Specialists.
WestMod Homes is a Western Australian company specialising in expandable prefab homes. We import quality homes and manage the entire process — from design selection to council approval, delivery, and installation. Smarter, faster, and more affordable than traditional construction.
Based in Forrestdale, WA — we work across the Perth metro and regional Western Australia.
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What Our Clients Say
"Had WestMod install a granny flat in the backyard for my mum. The whole thing was done in a few weeks — way faster than I expected. Communication was great throughout."
"They handled everything including council approval which I was dreading. Saved me so much time and stress. The home looks fantastic and is already rented out."
"Really straightforward process. They explained everything clearly, gave us a couple of layout options, and delivered exactly what we asked for. No surprises."
Let's Build Your Backyard Home.
Expandable prefab homes installed in weeks — book your free quote with WestMod Homes today.
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