How Much Does a Concrete Patio Cost in Mandurah?
Quick answer: A concrete patio slab in Mandurah typically costs around $85 to $135 per square metre for plain concrete and $115 to $180 per square metre for exposed aggregate, supplied and laid, based on published 2026 Western Australian pricing. A 30 square metre patio slab therefore usually costs roughly $2,550 to $5,400, depending on finish, site preparation and access, before any roof or outdoor features.
The slab is only part of a patio project. A roof, posts, lighting, power and landscaping are usually priced separately and may need council or building approval.
Concrete Patio Cost at a Glance
| Patio finish | Typical cost per m² | Example 30 m² slab |
|---|---|---|
| Plain concrete | $85 to $135 | $2,550 to $4,050 |
| Broom finish | $95 to $145 | $2,850 to $4,350 |
| Exposed aggregate | $115 to $180 | $3,450 to $5,400 |
| Stamped or stencilled | $105 to $170 | $3,150 to $5,100 |
| Liquid limestone | $110 to $165 | $3,300 to $4,950 |
| Honed or polished | $160 to $280 | $4,800 to $8,400 |
| Removal of old surface | Roughly $45 to $120 per m² | $1,350 to $3,600 |
These are planning figures from published 2026 cost guides, not quotes. Always get current written quotes from local concreters.
What Is a Concrete Patio?
A concrete patio is an outdoor slab used for sitting, dining, entertaining and relaxing, usually next to the house. It may be open to the sky or covered by a pergola, verandah or roof. Our concrete patios differ from paths and driveways in several ways:
- Larger, flatter areas with gentle falls for drainage.
- More focus on appearance, since people spend time on the surface.
- Lighter vehicle loads, though furniture, outdoor kitchens and spas add weight.
- Closer integration with the house, including floor levels and drainage.
Typical Patio Sizes and Costs
| Patio size | Typical use | Plain broom finish | Exposed aggregate |
|---|---|---|---|
| 12 m² (3 m × 4 m) | Small courtyard or table setting | $1,020 to $1,740 | $1,380 to $2,160 |
| 24 m² (4 m × 6 m) | Family dining and lounge | $2,040 to $3,480 | $2,760 to $4,320 |
| 36 m² (6 m × 6 m) | Large entertaining space | $3,060 to $5,220 | $4,140 to $6,480 |
| 50 m² | Extended outdoor living | $4,250 to $7,250 | $5,750 to $9,000 |
Larger slabs often cost less per square metre, while small or irregular patios can cost more because of setup, minimum concrete loads and finishing detail.
How Thick Should a Concrete Patio Be?
| Feature | Typical specification |
|---|---|
| Slab thickness | About 100 mm |
| Reinforcement | SL72 mesh |
| Concrete strength | Around 25 MPa |
| Base | Compacted crushed rock or limestone, about 50 to 100 mm |
| Fall | Around 1 in 100 away from the house |
| Edges | Thickened edges or beams where posts, walls or heavy features sit |
If your patio will support brick pillars, an outdoor kitchen, a spa or a roof structure, the slab and footings may need engineering. Discuss your plans with your concreter before the pour so that post positions, anchor points and thickened sections are built in.
Factors That Affect Patio Cost in Mandurah
Finish and Decoration
The finish drives price more than almost anything else. Broom and plain finishes are the most economical, while exposed aggregate, stamped patterns, liquid limestone and polished concrete cost more.
Size and Shape
Larger patios cost more overall but less per square metre. Curves, steps, planters and borders add formwork and finishing labour.
Site Preparation
Mandurah’s sandy ground drains well but must be compacted properly. Excavation, levelling, tree removal and drainage works increase costs.
Access
Narrow side access and fenced yards make concrete delivery harder. A pump or wheelbarrowing adds labour.
Existing Surfaces
Removing old pavers, concrete or decking adds demolition and disposal costs.
Roof and Structure
A pergola, verandah or solid roof can cost several times more than the slab. Footings and posts may need to be incorporated into the slab design.
Services
Power, lighting, gas, water and drainage often need to be installed before the pour, and conduits are much cheaper to place in the base than to retrofit later.
Patio Finishes: Which Is Best for Mandurah Homes?
Broom Finish
Practical, slip-resistant and affordable. A good choice for budget-friendly patios.
Exposed Aggregate
Premium, textured and good at hiding marks. Popular for entertaining areas and coastal homes.
Liquid Limestone
A popular Western Australian finish with a soft, natural look. It is often honed and sealed for a refined appearance.
Stamped or Stencilled Concrete
Stamped concrete imitates stone, brick or tiles. It looks decorative but needs sealing and care.
Honed or Polished Concrete
Polished concrete is smooth, modern and elegant, usually used in covered areas. Make sure the sealer provides adequate slip resistance outdoors.
Coloured Concrete
Pigments can match your home. Lighter tones stay cooler underfoot in summer.
Do You Need Council Approval for a Concrete Patio?
The rules depend on what you build.
- A simple open slab may be treated differently from a roofed structure, but planning requirements such as setbacks and site coverage can still apply.
- A roofed patio, verandah or pergola commonly requires approval, such as a building permit, and must meet setback and open space rules.
- A patio attached to a house may involve structural and drainage requirements.
- Works near boundaries, easements or services can trigger additional checks.
In Western Australia, requirements vary with the size, height, location and type of structure. Check the current rules with the City of Mandurah before you start, particularly if you plan a roof.
Drainage and Waterproofing Around the House
A patio slab next to the house must manage water carefully.
- Fall away from the house so water runs outward, not toward walls.
- Keep the finished level below the house floor and damp-proof course to prevent water entering the building.
- Provide drainage such as grated drains, soakwells or approved stormwater connections.
- Seal joints where the slab meets the house, using flexible joint materials.
- Avoid blocking weep holes in brickwork.
Poor drainage can cause pooling, slippery surfaces, damp walls and long-term damage.
Heat, Comfort and Style in Mandurah
Mandurah summers can be hot, so surface choice affects comfort.
- Light colours reflect more heat and stay cooler.
- Textured finishes can feel cooler than smooth dark surfaces.
- Shade from pergolas, sails and trees reduces temperatures.
- Coastal breezes can make patios more comfortable, but also carry salt, so sealing and good concrete quality help.
If you plan to use the patio barefoot or with pets, test samples in direct sun before choosing a colour.
How to Save Money on a Concrete Patio
- Choose a broom or plain finish if budget matters.
- Keep the shape simple. Rectangles are cheaper than curves.
- Pour with other slabs. Combining a patio, path or driveway can reduce setup costs.
- Plan services early. Install conduits and drains before the pour.
- Prepare the site. If agreed, clear plants and old items yourself.
- Delay decorative upgrades. You can often add sealing or colour later.
- Avoid skimping on base and joints. Poor preparation costs more later.
Questions to Ask Your Concreter
- What thickness, mesh and strength do you recommend for my patio?
- Will you build in thickened edges or footings for posts and walls?
- How will drainage and falls be handled?
- Can I see examples of the finish I am considering?
- Is sealing included in the price?
- Who handles approvals if a roof is planned?
- How long before I can use the patio and place furniture?
- What warranty do you offer?
Caring for Your Concrete Patio
- Keep foot traffic off for 24 to 48 hours and heavy furniture off for about a week.
- Sweep regularly and wash with mild detergent.
- Seal decorative finishes every few years.
- Treat stains such as oil, rust and food spills quickly.
- Keep drains and gutters clear.
- Use furniture pads to avoid scratches.
Frequently Asked Questions
How much does a concrete patio cost per square metre?
In Western Australia, plain and broom finishes are typically $85 to $145 per square metre, exposed aggregate about $115 to $180 and polished finishes up to $280, depending on the job.
How much does a 6 m × 4 m concrete patio cost?
A 24 square metre slab typically costs about $2,040 to $3,480 for plain or broom finish and roughly $2,760 to $4,320 for exposed aggregate.
How thick should a concrete patio be?
Around 100 millimetres with SL72 mesh is common, with thicker sections or footings for posts and heavy features.
Do I need a permit for a concrete patio?
A simple slab and a roofed patio can have different requirements. Roofed structures usually need approval, so check with the City of Mandurah.
Is exposed aggregate good for patios?
Yes. It is slip resistant, hides marks and looks premium, though it costs more and benefits from sealing.
How long does a patio slab take?
Most residential patios take two to four days for preparation, pouring and finishing, then curing time before heavy use.
What is the best finish for a hot climate?
Lighter coloured exposed aggregate or broom finish with a light sealer often feels more comfortable than dark smooth surfaces.
Can I add a roof later?
Yes, but plan footings and anchor points before pouring so the slab supports the future structure. Many homeowners pour the patio and a covered alfresco area together so the footings are ready for the roof.
Final Thoughts
A concrete patio in Mandurah typically costs around $85 to $180 per square metre depending on finish, with polished and highly decorative options at the top end. The final price depends on size, preparation, access, finish, drainage and any roof or structure. Plan your layout, think about future additions, check approval requirements and compare itemised quotes from local concreters.
A well-built patio creates a durable, attractive outdoor living space that suits Western Australia’s climate and adds value to your home.