Looking for expandable homes in Melbourne that meet full Australian residential building standards? Containable Luxury designs and builds NCC Class 1a expandable modular homes in our Truganina factory for Melbourne backyards, regional Victorian blocks and acreage — from $45,000.
Every home is overseen by Bosko Stojanovski, Registered Building Practitioner DB-U 73403, and comes with a 10-year structural warranty and a 7-star energy rating. You deal directly with the builder — no sales agents.
What is an expandable home?
An expandable home is a factory-built modular home that travels folded to a compact size and opens out on site into a full-width home. Folding keeps transport and crane costs down, while the finished home has the room, kitchen and bathroom of a normal house. Ours are built as permanent Class 1a dwellings, not temporary site sheds.
Compare our expandable home models
| Model | Living area | Bedrooms | From | Best for |
|---|---|---|---|---|
| OwnSpace 20 | 42m² | 2 | $45,000 | Granny flats, guest retreats, rental income |
| OwnSpace 30 | 57m² | 2–3 | $65,000 | Growing families, regional blocks, dual living |
| OwnSpace 40 | 73m² | 3 | $85,000 | A full family home, acreage, holiday homes |
Prices are starting prices. Your written quote confirms exactly what is included for your site. All three models are under 80m², so they can also be built as a granny flat (small second dwelling) on most Victorian lots.
Why choose Containable Luxury
- NCC Class 1a compliance — engineered for permanent living, with architectural plans and engineering documentation for your building surveyor.
- 7-star energy rating — insulated walls and roof and double-glazed windows for Melbourne’s four-seasons-in-a-day weather.
- Registered Victorian builder — Bosko Stojanovski, DB-U 73403.
- 10-year structural warranty on every home.
- Melbourne display centre — walk through finished homes at 13 Gardiner Lane, Truganina.
Permanent home or relocatable option
- Permanent dwelling (Class 1a) — for a main home, a rural retreat or a backyard granny flat. Installed on engineered piers, screw piles or a slab, with a building permit.
- Relocatable setup — prefer something you can move? See our OwnTrailer base for eligible units.
Expandable vs modular vs transportable homes
These names overlap. Modular and prefab homes are built in a factory in sections. Transportable and relocatable homes are delivered complete by truck. An expandable home is a type of modular home that folds for transport and expands on site. The OwnSpace range is all three: factory-built, delivered by truck, and expanded on your block.
Where we build
From our Truganina factory we install across Melbourne — Wyndham, Melton, Brimbank, Hume, Sunbury and the inner and eastern suburbs — and across Victoria, including Geelong, Ballarat, Bendigo, the Mornington Peninsula and regional towns.
Expandable home FAQs
Do I need a permit for an expandable home in Victoria?
As a permanent home, it needs a building permit. A planning permit may also apply depending on your zone and overlays. As a granny flat of 80m² or less, most lots need no planning permit — see our granny flats guide.
How long does an expandable home take?
Factory build and delivery typically take 12–18 weeks after order, plus the time for permits. We give you a timeline with your quote.
What foundations does an expandable home need?
Depending on your soil report and slope: engineered concrete piers, screw piles or a concrete slab. We advise on the most cost-effective option during the site check.
Are expandable homes warm enough for Melbourne winters?
Yes. Every OwnSpace home is built to a 7-star energy rating with insulated wall and roof panels and double-glazed windows and doors.