The Ultimate Guide to Concrete for Perth Renovations & Extensions (2025)
Renovating or extending your home is one of the biggest investments you’ll make — and concrete plays a critical role in how successful that project will be. From new rooms and alfrescos to extended driveways, patios and pathways, choosing the right concrete solution ensures your renovation not only looks seamless but lasts for decades.
In Perth, concrete for renovations must withstand extreme UV, heat, coastal conditions and reactive soils. At Woodlands Construct, we work closely with homeowners, builders and renovators to deliver concrete solutions that integrate perfectly with existing homes while meeting modern performance standards.
This guide explains how to choose, plan and use concrete correctly for Perth renovations and extensions.
Table of Contents
- Why Concrete Is Essential for Perth Renovations
- Common Renovation & Extension Projects Using Concrete
- Choosing the Right Concrete Finish for Renovations
- Matching New Concrete to Existing Surfaces
- Cost Considerations for Renovation Concrete in Perth
- Common Renovation Mistakes to Avoid
- FAQs – Concrete for Renovations & Extensions
- Related Services & Internal Links
- Final Advice & Next Steps
1. Why Concrete Is Essential for Perth Renovations
Concrete provides the structural foundation and visual continuity needed when extending or upgrading an existing home. Unlike timber or pavers, concrete offers strength, longevity and design flexibility — making it ideal for both small upgrades and major extensions.
Why it works so well in Perth
- Handles high heat and UV exposure
- Performs well on sandy and reactive soils
- Integrates cleanly with modern and older homes
- Low maintenance compared to alternatives
- Suitable for indoor–outdoor transitions
Concrete allows renovations to feel
intentional, seamless and future-proof.
2. Common Renovation & Extension Projects Using Concrete
Concrete is used across almost every type of residential renovation in Perth.
Popular applications include:
- Alfresco extensions
- Patio upgrades
- New driveways or driveway extensions
- Side access and pathways
- Pool renovations
- Garage and shed slabs
- Outdoor entertaining areas
- Steps and retaining features
Concrete is especially effective when tying new spaces into an existing home without visual breaks.
3. Choosing the Right Concrete Finish for Renovations
Selecting the correct finish is essential for both performance and aesthetics.
Exposed Aggregate
âś” Best for driveways, paths and high-traffic areas
âś” Slip-resistant and durable
âś” Works well with older and modern homes
Honed Concrete
âś” Ideal for alfrescos, patios and pool areas
âś” Smooth, modern and cool underfoot
âś” Excellent for seamless indoor–outdoor flow
Coloured Concrete
âś” Matches existing tones or new design palettes
âś” No peeling or flaking like coatings
âś” Suitable for extensions and feature areas
Architectural Concrete
âś” Custom edges, steps, bench seats and features
âś” Best for design-led renovations
âś” Adds significant visual impact and value
Pro Tip: Renovations are the perfect time to upgrade finishes — matching old concrete exactly is often less effective than elevating the entire space.
4. Matching New Concrete to Existing Surfaces
One of the biggest challenges in renovations is integrating new concrete with existing slabs.
Best practice includes:
- Assessing the age and condition of existing concrete
- Matching or intentionally contrasting finishes
- Correct joint placement between old and new slabs
- Proper reinforcement to prevent differential movement
- Sealing both surfaces for a consistent appearance
In many cases, refinishing or resealing older concrete creates a cohesive, modern result.

5. Cost Considerations for Renovation Concrete in Perth
Renovation concrete pricing varies depending on complexity and access.

Indicative costs (Perth 2025):
| Application | Approx Cost (per m²) |
|---|---|
| Standard grey | $80-$120m2 |
| Coloured concrete | $95-$130m2 |
| Exposed aggregate | $110-$150m2 |
| Honed concrete | $120-$160m2 |
| Architectural concrete | Varies |
What affects cost most:
- Access restrictions
- Demolition or removal of existing concrete
- Integration with old slabs
- Drainage adjustments
- Finish and sealing requirements
Renovation projects often require more planning but deliver higher value.
6. Common Renovation Mistakes to Avoid
❌ Treating renovations like new builds
Older homes require careful assessment of soil, levels and existing structures.
❌ Poor transitions between old and new
Incorrect jointing leads to cracking and uneven surfaces.
❌ Skipping drainage planning
Renovations often alter water flow — drainage must be reassessed.
❌ Choosing finishes without considering heat or slip resistance
Especially important for patios, alfrescos and pool areas.
❌ Hiring contractors without renovation experience
- Extensions require precision, not just pouring concrete.
7.FAQ's
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1. Can new concrete be poured against existing slabs?
Yes, when done correctly with proper joints, reinforcement and preparation.
2. Should old concrete be removed or kept?
It depends on condition and layout. In some cases, retaining and resurfacing is ideal.
3. Is sealing important for renovation concrete?
Absolutely. Sealing protects colour consistency and prevents UV and moisture damage.
4. How long does renovation concrete take to cure?
Concrete typically cures for 28 days, though light foot traffic is possible earlier.
5. Can finishes be upgraded during renovations?
Yes — renovations are the best opportunity to upgrade to exposed aggregate, honed or architectural finishes.
Explore our specialist renovation-friendly concrete services:
- Concrete Driveways Perth
- Exposed Aggregate Perth
- Honed Concrete Perth
- Architectural Concrete Perth
- Concrete Patios Perth
Each service is tailored to integrate seamlessly with existing homes.
9. Final Advice for Perth Renovators
Successful renovations are about planning, integration and experience. Concrete should enhance your home — not highlight where old meets new.
At Woodlands Construct, we specialise in concrete solutions that complement renovations and extensions while delivering long-term performance in Perth conditions.

👉 Contact us today for expert advice and a free renovation quote.
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