Concreting Cost Calculator – How Much Will Your Concrete Project Cost?

Concrete is one of the most versatile and widely used materials in construction — from driveways and patios to slabs, pathways, and house foundations. But how much does concreting actually cost in Australia? Whether you’re planning a small backyard slab or a large-scale pour for a home extension, estimating your budget is the first crucial step.

Our Concreting Cost Calculator is designed to give you a quick and easy estimate based on your project size and the type of concrete work you need. Simply enter your details to find out how much your job might cost*.

*Note: This calculator provides an estimate for material and basic installation only. Actual costs may vary depending on location, labour, access, and other site conditions.

How to Calculate the Cost of a Concrete Project

There’s more to concreting than pouring grey sludge into a frame. Every concrete job has its own cost structure, depending on factors like thickness, finish, location, access, and reinforcement. To calculate the cost properly, follow these basic steps:

1. Measure your project area (in square metres)

2. Choose the type of concrete and finish (basic, exposed aggregate, coloured, etc.)

3. Multiply the square metre area by the average cost per m² for that type of concrete

4. Add labour, site preparation, reinforcement, and access costs to get a full estimate

Alternatively, use our calculator above to do the hard work for you.

Step 1: Understand What Impacts the Cost of Concreting

Before you grab your tape measure, it’s worth understanding the key factors that affect how much you’ll pay for concrete work:

1. Size of the Area

Concrete is usually priced per square metre. The bigger the job, the more material, labour, and time required. A larger pour may offer some economies of scale, but you’ll still pay more overall.

2. Thickness of the Slab

A standard residential slab is usually 100mm thick, but driveways, footings, or structural slabs may require 125mm or more, which increases material costs.

3. Type of Finish

• Basic grey concrete is the most affordable

• Coloured concrete involves pigments and slightly more labour

• Exposed aggregate is more decorative and requires extra finishing time

• Stamped or stencilled concrete can mimic the look of tiles or pavers, but adds cost

4. Site Preparation

If your site needs clearing, levelling, or excavation before pouring, expect extra charges for labour and equipment hire.

5. Reinforcement

Most concrete jobs will require steel mesh or bars (rebar) for strength. The type and amount of reinforcement can significantly impact your budget.

6. Access to the Site

Is your concreting area easily accessible? If not, special equipment like concrete pumps or longer pour times may be needed, increasing your costs.

7. Labour Rates

Professional concreters typically charge between $60 to $100 per hour, depending on experience and the complexity of the job.

Step 2: Measure the Area

Calculating the area of your concreting project is straightforward if you’re working with a square or rectangular space:

Area = Length × Width

For example, a 10m × 4m driveway would be:
10 × 4 = 40 m²

If your project involves curves, irregular shapes, or multiple sections, break them down into smaller measurable shapes and then add up the total square metres.

Step 3: Estimate Concrete Costs Based on Finish Type

Here’s a breakdown of average concreting costs per square metre in Australia (as of 2025):

Prices are estimates only and vary by location, job size, and supplier.

Example Calculation

If you’re installing 50 m² of exposed aggregate:
50 × $125 (average) = $6,250

This figure is for materials and surface finishing only. You’ll still need to account for other factors such as labour, prep work, and equipment.

Step 4: Add Other Project Costs

Don’t forget the extras that can increase the cost of your concreting job:

Labour

Concreters typically charge hourly or per job. For most standard jobs, labour is built into the per square metre rate, but complex or multi-day projects may add extra time charges.

Excavation and Site Clearing

Removing old concrete, tree roots, or turf, and then levelling the site may require a bobcat, excavator, or manual labour. Expect costs to start from $500+ depending on difficulty.

Reinforcement Mesh or Bars

Adding steel reinforcement is essential for structural integrity. Standard mesh starts around $10–$15 per m², with thicker or specialised mesh costing more.

Formwork and Edging

Timber or plastic edging helps shape the slab and may add to the quote, especially for curved or custom-shaped areas.

Pump Hire

If a concrete pump is needed due to poor site access, this could add $500–$1,200 or more to your job depending on duration.

Step 5: Compare Quotes from Local Concreters

Once you’ve estimated your material and labour costs, it’s smart to get at least three quotes from licensed concreters in your area. Be sure to compare:

• Material quality (mix type, finish)

• Inclusion of site prep and clean-up

• Equipment hire (like pumps or saws)

• Labour and timeframe

• Warranty on workmanship

Don’t just choose the cheapest option — look for experience, clear communication, and a detailed quote that shows what’s included.

When to Choose Concrete Over Other Materials

Concrete isn’t always the cheapest upfront, but it offers excellent durability, low maintenance, and flexibility in design. It’s a strong choice for:

• Long-lasting driveways and footpaths

• Backyard patios and entertaining areas

• Shed or garage foundations

• Slabs for home extensions or granny flats

• Decorative outdoor zones (coloured or textured)

Concrete Repairs vs New Installation

Sometimes, you may be wondering whether to repair or completely replace old concrete.

Repair May Be Suitable If:

• Cracks are minor and not structural

• Surface wear is cosmetic

• The underlying slab is still sound

Replacement Is Better When:

• The slab is sunken or uneven

• Cracks are deep or widespread

• Water pooling or erosion is present

• You’re upgrading for aesthetics or new use

FAQ

How much does concreting cost per m² in Australia?

Depending on the finish, concrete costs range from $60 to $180 per m², with basic grey being the cheapest and decorative or exposed finishes costing more.

How thick should a concrete slab be?

Standard residential slabs are 100mm thick, but driveways and structural slabs may need 125mm or more, especially under heavy loads.

How do I calculate how much concrete I need?

Measure the area (m²) and multiply by thickness in metres to get volume in cubic metres. Then check how many cubic metres are needed based on your mix type and project scope.

Can I pour concrete myself?

DIY concreting is possible for small, flat surfaces like garden paths, but for anything structural (driveways, foundations), it’s best to hire a licensed concreter.

Do I need council approval for concreting?

Most standard paths and driveways don’t require approval, but large slabs or builds close to boundaries might. Always check with your local council.

Final Word – Try Our Concreting Cost Calculator Now

Need a quick estimate before you get quotes? Use our free Concreting Cost Calculator to work out how much your concrete job might cost. Whether it’s a new driveway, shed slab, or backyard patio, our calculator helps you plan ahead with confidence.

Get started above — and when you’re ready, request free quotes from qualified local concreters.