Cubby House Cost Calculator
Estimate the cost of a cubby house. The size and the materials or finish are the main cost drivers, along with site preparation and access.
Your cubby house details
Your estimate sits within the typical range.
A flat-pack cubby is the cheap option if you can assemble it; a custom build suits an awkward spot or a special design. Treated timber and a proper roof are worth it so it survives the weather for years.
💰 Ways to save
- A DIY kit costs far less than a custom build if you are handy, but factor in your own time and tools.
- Level and clear the site yourself where you safely can, you are paying trade rates for any prep otherwise.
- Get a few quotes and ask what the base or slab adds, it is often a separate and underestimated cost.
How we estimate this
A cubby house in Australia typically costs around $300 to $900 in 2026 for a small flat-pack, rising to $2,500 to $8,000 for a large custom-built fort with a deck, slide and quality timber.
Pricing reviewed: November 2026.
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Pricing reviewed November 2026. Indicative Australian costs, not a quote.
Understanding cubby house costs in Australia
A cubby house in Australia typically costs around $300 to $900 in 2026 for a small flat-pack, rising to $2,500 to $8,000 for a large custom-built fort with a deck, slide and quality timber.
A cubby house is priced by size and whether it is a flat-pack or custom build. A kit is cheap to buy and assemble, a custom cubby in treated timber with a deck and roof costs more but lasts and suits the yard.
Frequently asked questions
How much does a cubby house cost in Australia?
Roughly $300 to $900 in 2026 for a small flat-pack, and $2,500 to $8,000 for a large custom-built fort with a deck and slide.
Is a flat-pack or custom cubby better?
A flat-pack is cheaper and quick if you can assemble it. A custom build costs more but suits an awkward spot or a special design, and quality treated timber lasts far longer outdoors.
Are you a outdoor / landscaping builder?
Everyone on this page is working out what cubby house costs because they are ready to hire. Put your business right beneath the calculator, in your state, so you are who they find. From $50/mo.