Quick answer: A standard shed slab in Adelaide typically costs $80–$130 per square metre in 2026. Thicker, heavily reinforced machinery and commercial floors cost more. Site access, the amount of excavation and any set-downs all affect the final figure.
Shed slab price factors
- Size & thickness — bigger and thicker slabs cost more per job (though often less per m²).
- Reinforcement — machinery and commercial floors need heavier steel.
- Site prep — cut, fill and compaction on uneven or rural ground.
- Access — remote rural sites can affect concrete delivery.
Standard vs heavy-duty slabs
A garden or kit-shed slab sits at the lower end; a farm machinery shed slab or commercial floor is engineered thicker and reinforced, so it costs more. We build the slab to the engineering your shed and use require.
Get a fixed price
Send us your shed plan or dimensions and we'll give you a fixed written quote. See our shed & house slabs service.
Kit sheds, custom builds and slab cost
Kit sheds come with a floor plan and footing spec, so the slab is predictable — a small kit-shed pad (around 15 m²) is at the lower end of the range, while a large machinery shed (say 6m × 12m, around 72 m²) costs more both because of the area and because it usually needs a thicker slab and heavier edge beams. Custom and on-farm buildings often need engineered set-downs, thickenings and careful falls for drainage, all of which affect the price. Send us the plan and we will quote to the exact spec.
Rural and remote site costs
If your shed is on a rural block in the Morgan district, the Mid North or out in the Adelaide Hills, access affects price. Long gravel drives, soft ground or tight truck access can mean the concrete needs pumping. We also offer earthmoving and site preparation, so the pad can be cut, levelled and compacted ready for the pour by the same crew — which removes a common source of surprise costs and delays.
Heavy-duty and commercial slabs
Slabs for tractors, harvesters and workshop machinery need extra thickness and heavier reinforcement, and commercial floors can need thicker slabs again with super-flat finishes. These specialised jobs sit at the higher end and scale with complexity, so always provide the engineer's slab detail if you have one. If you don't, we can advise on the right thickness and steel for the use you have in mind. The most accurate path is always a free site measure and a conversation about what the slab will carry — send us your plans and we will quote within a few days.
What affects a shed slab price most
Three things move a shed slab quote more than anything else: the size, the required thickness and reinforcement, and the site. A flat, easy-access suburban block with a simple rectangular pad is the cheapest scenario. Add a slope that needs cutting and benching, soft or reactive ground that needs extra base work, or a remote rural location where access is tight, and the price rises accordingly. Engineered thickenings, edge beams and plumbing set-downs for a habitable building also add to a basic shed pad. The more detail you can give us up front — the shed plan, the intended use, the ground conditions — the more accurate the quote.
Saving money on your slab
Booking the slab when we are already working nearby, having clear access ready on the day, and getting the pad close to level beforehand can all help. If the ground needs serious work, letting us do the earthworks and the pour as one job usually beats hiring two separate contractors. As always, the base, thickness and steel are not the place to economise.
More questions about shed slab cost
Do you pour to a kit-shed plan? Yes — send the plan and we pour to the exact footing and set-down detail. Is site prep included? It can be — we offer earthmoving and site prep so the pad is ready before we pour. How thick will my slab be? That depends on the use and the engineering; a garden shed is thinner than a machinery or commercial floor.