Concrete Slab Cost Guide 2026

According to the latest pricing data from ServiceSeeking.com.au, the average cost of a concrete slab is around $103 per square metre, while prices can start at $20 per square metre for simpler jobs. Across all concrete slab requests on the platform, the average total quoted cost is approximately $2,834. 

If you’re looking for a broader overview of concreting fees, you can also refer to our general concreter price guide. It covers average hourly rates, typical job costs, and how cleaners structure their pricing across different types of work.

Understanding how trade professionals structure their quotes can help you budget effectively before posting a project. Data from thousands of quotes submitted by trade businesses on our platform reveals a clear preference for how these services are priced:

• 66% of quotes are charged per square metre. This is the standard approach for flat-surface installations because it gives homeowners predictable upfront pricing based directly on the area size.
• 12% of quotes are provided as an approximate total. For jobs with unique shapes or specific structural requirements, contractors prefer to give a comprehensive, all-inclusive figure for the entire project from the outset.
• 10% of quotes are billed per hour: This method is typically used when the scope of work is unpredictable or if extensive site preparation and clearing are required before any pouring can begin.

Average Concrete Slab Cost Per Square Metre

Based on our latest pricing data:

• Minimum rate: $20 per m²
• Average rate: $103 per m²

Lower rates are typically associated with straightforward slab installations on level sites with good access. Prices tend to increase when projects require significant excavation, thicker slabs, steel reinforcement, drainage work, or preparation for heavier structures such as garages or house foundations.

Average Concrete Slab Hourly Rates

Where hourly pricing applies, the latest figures show:

• Minimum hourly rate: $40
• Average hourly rate: $87

Hourly rates are generally used for labour-intensive work or jobs where the total time required cannot be accurately estimated in advance.

Average Total Cost of a Concrete Slab

Across all concrete slab jobs posted on ServiceSeeking.com.au, the average total quoted price is approximately $2,834.

The final price depends largely on the slab's dimensions and specifications. A small garden shed slab may cost considerably less than average, while larger residential slabs for garages, workshops or home extensions can exceed this figure.

How to Get an Accurate Quote

When requesting quotes, provide as much information as possible about your project. Details such as the concrete slab's dimensions, intended use, site access, ground conditions and any finishing requirements will help concreters prepare more accurate estimates.

Obtaining multiple quotes also gives you a clearer picture of current market pricing and helps you compare what's included in each proposal rather than simply choosing the lowest price.

Disclaimer: The prices in this guide are based on quote data from ServiceSeeking.com.au and are intended as a general pricing guide only. Actual costs may vary depending on your location, project specifications, site conditions, materials, labour, and individual contractor pricing. Always obtain detailed quotes for your specific project before making a decision.