Supplied and delivered, concrete for a standard alfresco slab in Central Victoria costs roughly $200 to $250 per cubic metre for a 25 MPa mix, plus delivery. Because an alfresco pour is small, a part-load fee usually applies, which lifts the effective rate. For most homes that works out to around $600 to $1,200 for the concrete delivered to site, before pump hire, formwork, or laying.
That price is for the concrete only, mixed to your specification and delivered by truck. It does not include the concreter’s labour, formwork, steel, or finishing. The table below gives a guide by slab size, based on a 100mm thick slab in 25 MPa concrete.
| Alfresco size | Concrete needed (100mm + wastage) | Supplied and delivered (guide) |
| 15 m² | 1.5 to 2 m³ | $550 to $800 |
| 20 m² | 2 to 2.5 m³ | $650 to $950 |
| 30 m² | 3 to 3.5 m³ | $850 to $1,200 |
| 40 m² | 4 to 4.5 m³ | $1,050 to $1,450 |
These are guide figures for Central Victoria and every job is priced on your mix, volume, and delivery distance from our Broadford plant.
How Much Concrete Does an Alfresco Slab Need?
To work out the concrete for an alfresco slab, multiply the length by the width by the thickness in metres. A slab 5m by 6m at 100mm thick is 5 x 6 x 0.1, which is 3 m³.
Most residential alfresco slabs are poured at 100mm thick. Heavier use, such as an outdoor kitchen with a built-in bench or a spa, can call for 125mm, which adds about 25 percent to the volume.
Always add around 10 percent for wastage. Uneven ground, spillage, and small variations in slab depth all use extra concrete, and running short mid-pour is far more expensive than ordering a little over. So a true 3 m³ slab is best ordered as about 3.3 m³.
Concrete Supply Price Per m³ for an Alfresco Slab
The mix you choose sets the base supply price. Standard residential alfresco slabs use 25 MPa, which is strong enough for foot traffic, furniture, and normal outdoor use. Prices below are per cubic metre, supplied and before delivery.
| Concrete mix | Supply price per m³ | Best for |
| 20 MPa | $180 to $220 | Light-duty, non-structural slabs |
| 25 MPa | $200 to $250 | Standard alfresco and patio slabs |
| 32 MPa | $220 to $290 | Heavy use, outdoor kitchens, spas |
| Exposed aggregate | Add $30 to $60 | Decorative alfresco finish |
If you want a decorative alfresco floor, exposed aggregate is supplied at a premium over plain premix at the same strength. Pump-grade mixes, which have a higher slump so they flow through a line pump, also carry a small adder per cubic metre.
Why a Small Alfresco Pour Costs More Per m³
This is the part most price guides skip. An alfresco slab is a small order, and small orders cost more per cubic metre than a full truck.
A full concrete truck carries about 5 to 7 m³, and that full-load rate is the cheapest per m³. Order less than that and a part-load or short-load fee applies to cover the truck and driver. As a rough guide across the industry, a 2 m³ order can attract a fee of $160 to $200, a 3 m³ order around $80 to $120, and orders of 4 to 5 m³ little to none. Mini-mix trucks can deliver as little as 0.5 m³, but the effective rate climbs steeply at that size.
The practical takeaway is simple. If you have other concrete work planned, such as a path or a shed slab, pouring it at the same time as your alfresco slab pushes you closer to a full load and lowers your cost per m³.
What “Supplied and Delivered” Includes
Supplied and delivered means the concrete, batched to your mix and slump, and driven to your site. It typically covers:
- The concrete mix, made to your chosen MPa and slump
- Batching to Australian Standard AS 1379
- Delivery by truck to an accessible site
It does not include:
- Formwork, steel mesh, or reinforcement
- Laying, screeding, or finishing the slab
- A concrete pump or line pump, if the truck cannot reach the pour
- Excavation, base preparation, or a vapour barrier
If you need someone to build the slab from start to finish, that is a full concreting job priced per m², not a supply-and-delivered price.
What Affects the Supplied and Delivered Price?
Several things move the final number up or down:
- Concrete strength (MPa): higher grades cost more per m³.
- Slump and pump mix: a higher slump for pumping adds a small amount per m³.
- Order size: the smaller the pour, the higher the effective rate, because of part-load fees.
- Delivery distance: loads travelling further from the Broadford plant attract a distance-based charge.
- Site access and pump: if the truck cannot reach the pour, a line pump adds roughly $650 to $900 for up to four hours plus a per-m³ pump fee.
- Waiting time: the first 30 to 45 minutes on site are usually free, then waiting time is charged if the crew is not ready to pour.
Supplied and Delivered vs Fully Installed
These are two different prices, and it helps to know which one you are comparing.
Supplied and delivered is the concrete only, priced per m³, delivered to your site. You or your concreter handles the formwork, steel, pouring, and finishing. This suits owner-builders and anyone arranging labour separately.
Fully installed is the complete slab built for you, priced per m² and usually quoted from $80 to $110 per m² for a plain alfresco slab. That figure includes the concrete plus all the labour, steel, and site work.
For a 30 m² alfresco slab, the concrete supplied and delivered might be around $850 to $1,200, while the same slab fully installed by a concreter could run $2,400 to $3,300. The difference is the labour and materials you take on yourself.
Frequently Asked Questions
How thick should an alfresco slab be?
Most residential alfresco slabs are 100mm thick, which suits foot traffic, outdoor furniture, and general use. Step up to 125mm for an outdoor kitchen with heavy built-in features, a spa, or vehicle access.
What concrete strength is best for an alfresco slab?
25 MPa is the standard choice for a residential alfresco slab. It balances strength and cost for normal outdoor use. Move to 32 MPa for heavier loads or if your engineer specifies it.
Can you deliver concrete for a small alfresco slab?
Yes. Small alfresco pours of 1 to 4 m³ are delivered every day, either by standard truck or mini-mix. Just expect a part-load fee on orders under about 5 m³, since the cost per m³ is higher than a full load.
