Concrete Slab Cost depends on whether the slab is on the ground or suspended, its thickness and reinforcement, the finish and site access. Below are ballpark prices and how contractors price slab work.
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Request a QuoteHow Contractors Price
- Per m². Common for rafts, slabs and floors.
- Per m³. Used for concrete, excavation and fill.
- Per linear metre. Used for footings, beams, joints and edge shutters.
- Per item. Used for columns, stairs, pumps and inspections.
- Provisional sums. Allowances for unknowns such as rock. Check these closely.
Concrete Slab Cost at a Glance
Ballpark prices so you can sanity-check a quotation.
| Item | Ballpark price |
|---|---|
| Ground floor surface bed | R500 - R850 per m² |
| Garage floor slab | R550 - R950 per m² |
| Warehouse floor slab | R900 - R1,800 per m² |
| Rib and block suspended slab, installed | R850 - R1,300 per m² |
| In-situ suspended slab | R1,400 - R2,500 per m² |
| Coffer or waffle slab | R1,800 - R3,200 per m² |
| Ready-mix concrete, delivered | R2,000 - R3,000 per m³ |
| Concrete pump, per pour | R4,500 - R12,000 |
Prices JUST UPDATED. Indicative ballpark figures in rand, rounded and excluding VAT. They reflect typical South African market rates for this kind of work. They are not our prices or quotations, and no contractor is bound by them. Confirm VAT, delivery, steel, concrete and what each quotation includes.
What Drives the Price
- Ground conditions. Clay, collapsible sand, fill, rock and groundwater change the design and the digging.
- Engineering. The engineer's design sets slab thickness, beams and steel, and site visits are charged.
- Reinforcement. Steel quantity is often the biggest variable between designs.
- Concrete. Volume, strength class, pump hire and minimum load charges.
- Access. Narrow or steep sites need pumps, small machines or hand work.
- Programme and weather. Rain delays and rushed programmes add cost.
What a Quotation Usually Includes
- Setting out and excavation to the drawings.
- Formwork or edge shutters.
- DPM and sand blinding where specified.
- Reinforcement supply and fixing.
- Concrete supply, placing and finishing.
- Curing and cleaning up.
Common Exclusions
- Engineer's design, soil report and inspection fees.
- Rock excavation and dewatering.
- Imported or engineered fill.
- Concrete pump hire.
- Plumbing and drainage under the slab.
- Termite treatment, screeds, waterproofing and VAT.
Ask every contractor to price from the same drawings and list exclusions so you can compare like with like.
Concrete Slab Cost FAQs
How much does a concrete slab cost per m²?
As a ballpark, R500 to R850 per m² for a ground surface bed and R1,400 to R2,500 per m² for an in-situ suspended slab, excluding VAT.
What is the cheapest suspended slab?
On standard spans, rib and block usually costs least. In-situ slabs suit cantilevers and irregular shapes.
Why is there a minimum charge?
Ready-mix trucks, pumps and crews carry fixed costs, so small pours cost more per m².
Is the price for concrete only?
Ask. Some quotes cover concrete only, others include excavation, mesh, DPM, pump and finishing.
Related Services
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