Concrete slabs are the foundation of most homes, sheds, and garages across Melbourne. Getting the slab right is critical for the long-term performance of any structure. In 2025, the cost of concrete slabs in Melbourne depends on size, thickness, reinforcement, and whether it’s for a house, shed, or garage. This guide breaks down typical slab costs and what you can expect when budgeting your next project.
Average Concrete Slab Costs in Melbourne
On average, concrete slabs in Melbourne cost between $70–$120 per m² for standard residential projects. However, specialised slabs for houses or heavily reinforced projects can exceed $150 per m². Factors influencing price include site access, excavation, soil type, and reinforcement requirements.
Typical costs include:
- Plain concrete shed or garage slabs: $70–$100 per m²
- House slabs (raft or waffle pod): $90–$130 per m²
- Heavily reinforced commercial slabs: $120–$160+ per m²
House Slabs (Raft & Waffle Pod)
House slabs are engineered foundations designed to support an entire home. In Melbourne, the two most common types are raft slabs and waffle pod slabs. Raft slabs use deep edge beams and ribs for stability, while waffle slabs use polystyrene pods for cost and speed benefits. A typical house slab costs $90–$130 per m², depending on soil classification and engineering requirements.
See our Waffle Pod vs Raft Slab article for a full comparison.
Shed Slabs
Shed slabs are smaller but still need proper reinforcement to withstand equipment, vehicles, or storage loads. A shed slab in Melbourne typically costs $70–$100 per m², with additional reinforcement required for heavier loads. Correct site preparation, compaction, and drainage are essential for durability.
Garage Slabs
Garage slabs are designed to handle the weight of vehicles and resist oil, water, and tyre stains. A reinforced garage slab usually costs $80–$120 per m² in Melbourne, depending on thickness and reinforcement. Many homeowners also choose to seal garage slabs to improve durability and make cleaning easier.
Learn more about our Concrete Slabs and Concrete Driveways services.
Factors Affecting Slab Prices
Several factors can impact the cost of a concrete slab in Melbourne:
- Excavation and site access
- Soil type and reactivity (clay soils may require thicker slabs)
- Reinforcement mesh type (SL72, SL82, or heavier steel)
- Engineering requirements for residential or commercial builds
- Additional features such as sealing, polishing, or decorative finishes
Further Reading
Australian Building Codes Board – https://www.abcb.gov.au/
Housing Industry Association – https://hia.com.au/
Get a Free Quote for Your Slab Project
At Sturdy Concreter, we specialise in house slabs, shed slabs, and garage slabs across Melbourne’s South East and the Mornington Peninsula. We work with engineers to ensure compliance and durability. Contact us today for a free quote and expert advice tailored to your project.