How Much Does an Expandable Home Cost in Queensland?

Our listed expandable home models currently range from A$20,000 to A$38,000 for the base model, GST included. The total cost of your project also depends on add-ons, delivery, footings, service connections and approvals. This guide shows what is in the listed price and what is quoted separately.

Base-model prices

These are the current base-model prices from our catalogue. They cover the home as manufactured and factory-finished inside, ready for site connection.

Current base-model prices for CYJ expandable homes
ModelFloor areaSuitsBase price (GST incl.)
Granny Flat37 m²1–2 adultsFrom A$20,000
20FT Two Bedroom Home37 m²2 adults + 1 childFrom A$21,500
20FT Single Bedroom Suite37 m²1–2 adultsFrom A$23,500
Modular Expandable Home36 m²2–3 adultsFrom A$24,500
20FT Luxury Tiny Home37 m²1–2 adultsFrom A$25,000
Durable Tiny Home (Full Roof)37 m²2 adults + 1 childFrom A$26,900
40FT Family Deluxe72 m²3–5 adultsFrom A$38,000

The 30ft and 40ft ranges are priced by configuration. The 30ft is approx. A$36k–A$45k depending on configuration. The 40ft is from approx. A$38k for the standard version, and higher-spec versions are quoted separately. See the 20ft vs 30ft vs 40ft comparison for details.

Listed add-on prices

Popular upgrades have a listed price. Larger homes need more material, so the 30ft and 40ft add-on prices are higher than the 20ft prices.

Listed add-on prices by model size
Add-on20ft models30ft and 40ft models
Pitched roofA$4,500A$6,000
External claddingA$3,000A$3,500
Front porch with deckingA$3,000A$3,000
Front decking (2m x 6m)A$2,000A$2,000
Gutter systemA$1,500A$2,000
Registerable trailerA$12,000A$15,000

Other options such as extra bedrooms, custom kitchen and bathroom layouts or split-system air conditioning are quoted as part of a custom configuration.

Costs that are quoted separately

These costs depend on your site, so we can't list a fixed price for them. Before you pay a deposit, we help you clarify which of these apply to your project and who provides each one.

Costs quoted separately from the base price
CostWhat it depends on
Delivery and transportSite-specific. Depends on your location, the model size and access conditions.
Crane hireOnly if a crane is needed to place the home. We choose tilt tray or crane based on your access and model.
Footings or baseConcrete footings, steel piers, a concrete slab or a levelled gravel pad, depending on your site and use.
Service connectionsA licensed plumber and electrician connect water, sewer or septic, and power on site.
Approvals and certificationBuilding certifier fees and any council planning costs, which vary by council and lot.
AppliancesNot included as standard. Bring your own or add them as an upgrade.
Optional site worksAnything outside the home itself, such as earthworks, drainage, paths or extra decking.

How to budget for your project

  1. Pick a model and note its base price, then add any listed add-ons you want, such as a pitched roof or decking.
  2. Check your approval path with a building certifier. Our council approval guide explains how the process works in Queensland.
  3. Assess your site against the site preparation requirements. Access, levelling and footings are the costs that vary most between sites.
  4. Get quotes from a licensed plumber and electrician for the service connections.
  5. Send us your address and site photos so we can quote delivery and confirm whether a crane is needed.

This guide is general information, not engineering, legal or building advice. Requirements vary by site, council and intended use. Confirm your specific situation with a licensed building certifier, engineer and your local council.

Talk to us about your site

Display home inspections and consultations in Inala are available by appointment.