Drag the length, see the price
Length is the dimension that matters most, so it is set with a slider in millimetres. The flat grows along the backyard, windows slide along the wall and new ones join in, and the price rises with every 50 mm. The plan follows the floor area: clicking a plan sets its size, and dragging the slider changes the plan by itself.
| Plan | Dimensions | Floor area |
|---|---|---|
| Studio | 5850 × 6000 mm | 35 m² |
| 1 bedroom | 7500 × 6000 mm | 45 m² |
| 2 bedrooms | 10,000 × 6000 mm | 60 m² |
| 2 bedrooms + study | 11,650 × 6000 mm | 70 m² |
State limits built into the configurator
The first step is choosing the state, and the size limit follows it. In New South Wales and Victoria the demo stops at 60 m²; in Western Australia and South Australia at 70 m². The 70 m² plan is greyed out with a reason where it is over the limit, and the slider stops at the limit with a short note, instead of letting the customer get attached to a size that cannot be built.
- New South Wales (NSW): up to 60 m². On a lot of 450 m² or more, the simplified route (complying development) with a private certifier is usually available. Under 450 m² the configurator warns that this route is usually not available and moves the approvals allowance to a full council application (DA).
- Victoria: up to 60 m². In a residential zone generally no planning permit, but a building permit is still required.
- Western Australia: up to 70 m² where the design meets the R-Codes. A building permit is still required.
- South Australia: up to 70 m².
- Queensland: no single state limit. Size, setbacks and lot rules depend on the council, so the demo keeps the full range and advises the customer to check.
These rules are a guide for the customer, not a decision. The configurator never promises an approval: every note advises checking with a certifier or the council, and the demo's rules can be replaced with your own, for example Polish regulations.
Roof, cladding and COLORBOND® colours
- Roof: a 22.5° gable or a 7.5° skillion. With a skillion roof the front wall is higher, and narrow high-light windows appear under the eave.
- Cladding: weatherboard, vertical groove panels, corrugated steel or render, plus an entry feature in a spotted gum look or a dark panel.
- Colour: roof and gutters in COLORBOND® colours, plus matching wall colours. Colours on screen are approximate, so it is worth comparing them with a sample before ordering.
- Deck: an entry landing, a hardwood deck or a covered alfresco area with posts, a beam and a lined ceiling.
- Extras: rooftop solar panels and a 2000 L slimline rainwater tank, with the number of panels following the length of the roof.
The model holds up to a close look: corrugated sheeting, quad-profile gutters, downpipes with bends, weatherboards with corner stops, and sliding windows through which you can see into the room.
How we work out the price
The indicative price changes with every choice, and the “How is the price worked out?” button opens every line with its maths, e.g. “60 m² × 2250 AUD”. The demo price table sits within market figures for turnkey builds in 2026, about 2300–3500 AUD per square metre: studio and 1 bedroom from about 110 000 to 160 000 AUD, and 2 bedrooms at around 60 m² for about 175 000 AUD.
Site works are a separate line, from 15 000 AUD on a flat block with easy access to 40 000 AUD on a slope or a tight site, because they usually fall outside the turnkey contract. The choice also shows on the scene: the service trench runs to the main house, and a retaining wall appears on a sloping block. The cost of approvals with a certifier or, on a small NSW lot, with a full council application is a separate line too. Prices include GST.
The demo works from a sample price table in Australian dollars. In a live version the configurator uses the manufacturer's plans, price list and site works rates, including in PLN.
What a granny flat builder gets
Every configuration has its own link that restores all choices, so you open exactly what the customer put together. The summary lists the state, plan, dimensions, roof, cladding, colours, deck, extras and site conditions, with the price line by line. Enquiries arrive with a floor area and a budget, and you decide who is worth the drive.
Want to see the configurator with your own plans? You can work out an indicative implementation cost in the configurator cost estimator.