2026 Budgeting for Home Renovations in Perth: What to Expect and How to Plan

If you’re planning home renovations in Perth in 2026, getting your budget right from the beginning is everything. With material costs, labour rates, and approval timelines constantly shifting, homeowners need a realistic understanding of what drives renovation pricing and how to plan for success.

At Nexus Homes Group, we’ve worked with hundreds of Perth families to design, price, and deliver large-scale renovations that feel seamless and stress free. While every project is different, one thing always stays the same: accurate budgeting leads to better outcomes.

This guide will help you understand how to approach your renovation budget in 2026, what factors influence costs, and how working with an experienced renovation builder like Nexus Homes Group can give you confidence and clarity from the start.

 

Why Careful Budgeting Matters in 2026

The Perth construction scene is still overloaded, with skilled trades in high demand and the cost of materials and fixtures continuing to fluctuate. Council approvals can also vary by suburb, especially in established areas with heritage overlays.

Accurate budgeting isn’t just about managing money, it’s about setting expectations, avoiding stress, and ensuring that your design, timeline, and lifestyle all align before you begin building. A well-planned budget lets you move through each stage with confidence rather than uncertainty.

 

Key Factors That Influence the Cost of Home Renovations in Perth

Whilst every renovation is unique, there are several key elements that consistently affect final pricing. Understanding these early in your planning phase can really help you make informed decisions about where to invest and where to hold back.

1) The Extent of the Renovation

The size and complexity of the project are the biggest cost drivers. A simple ground-floor extension will sit in a different price range to a full internal reconfiguration or a new second storey.

At Nexus, most renovation and extension projects begin around $250,000, while second storey additions typically start at around $400,000 depending on the design and finish level.

2) Construction Method

One of the most significant factors is how the renovation is built. Nexus Homes Group were early pioneers of modular construction in Perth, a method that can reduce costs by up to 30 percent while shortening build times and minimising site disruption.

Modular extensions are built off-site and installed once complete, which allows multiple stages of work to happen at once – we cover this more on our Modular Homes page.

3) The Age and Style of the Home

Older homes often need extra attention, from rewiring and plumbing upgrades to structural reinforcement and asbestos removal. In particular, when it comes to either character homes or heritage properties, these can involve more complex planning approvals and custom materials, which all adds to the final cost of a renovation.

4) Quality of Fixtures and Finishes

Your material and finish selections will directly impact the final price, so budgeting should be set accordingly. For example, timber floors, stone benchtops, custom cabinetry and premium fittings all add value in a renovation, however these also increase the total spend, so it’s ultimately about balancing design aspirations you’re your realistic budget.

5) Time on Site and Access

Site access and logistics can make a big difference. Narrow driveways, sloping blocks, or tight suburban streets can affect build times and labour requirements. Staying in your home during construction can also extend the schedule.

 

 

Additional Costs to Include in Your Budget

Even with careful planning, there are costs that many homeowners forget to include. Allowing for these ensures your budget is realistic from the outset.

• Design and drafting
• Council and planning approvals
• Engineering and certifications
• Demolition and internal works
• Asbestos removal if required
• Temporary accommodation during major works
• Landscaping or exterior improvements

Nexus Homes Group discusses these items early in the design and quoting process so that clients know exactly what to expect before work begins.

 

Common Reasons Renovation Budgets Blow Out

Some cost overruns can’t be avoided, but most come down to planning – here are some of the main culprits to watch out for.

• Underestimating the scope: Homeowners often focus on finishes and layout changes but forget about structural work or compliance requirements.
• Choosing the wrong builder: A cheap quote can be appealing, but if it leaves out key items or doesn’t account for approvals and access, costs can climb quickly once construction starts.
• Changing your mind mid-build: Altering design choices after work has begun usually adds both time and money. Finalising selections before construction helps prevent this.
• Hidden structural issues: Once walls are opened, problems like outdated wiring or termite damage can appear. Having a contingency of around 10 to 15 percent gives you a safety net.

 

How Nexus Homes Group Helps Clients Budget with Confidence

We know that budgeting for a renovation is about more than numbers, it’s about trust and transparency from the first meeting through to completion.

• A proven process for scoping and quoting: We take the time to understand your home, your needs, and your lifestyle before quoting. Every project is costed thoroughly so there are no hidden surprises later.
• Experience with Perth councils and approvals: Our knowledge of local council processes, especially in the western suburbs, helps reduce delays and streamline documentation.
• Transparent communication: From design to handover, clients are kept informed about progress, timelines, and costs. You’ll always know exactly where things stand.
• Expertise in modular construction: Our modular building experience gives clients an option that can save both time and money while maintaining the architectural quality Nexus is known for.

 

Setting a Realistic Renovation Budget for 2026

While no two homes are alike, most Perth homeowners can use the following benchmarks as a guide:

• Major home renovations or ground-floor extensions generally start from $250,000 and increase depending on scale.
• Second storey additions typically begin from $400,000 and above.

Your home’s structure, access, design ambitions, and choice of materials will determine the final cost. The best way to establish an accurate figure is to speak with an experienced builder who can assess your specific site and needs.

At Nexus, we currently work with a minimum project budget to ensure we can deliver the level of quality, service, and design our clients expect. This minimum can fluctuate depending on industry-related and economic factors like the cost of building materials, labour availability, supply chain issues and more.

 

 

Tips for Smart Renovation Budgeting in 2026

To put it simply, homeowners budgeting for a home renovation in 2026 should:

• Research potential builders carefully and review their past projects
• Keep 10 to 15 percent aside for contingencies or design changes
• Be clear about your priorities before the design stage begins
• Start planning early to lock in pricing and avoid material delays
• Choose experience and reliability over the lowest quote

 

Start Planning Your Home Renovation With Nexus Homes Group

If you’re ready to plan your 2026 renovation, our team can help you define your scope, budget, and design goals with clarity. Whether it’s a modern addition or a full-home transformation, we’ll guide you through every stage with honesty and care.

We invite you to visit our Nexus Gallery to see our work in person, or if you’d like to experience one of our renovations in person, we encourage you to register for our next upcoming home open event in Bicton.

If you’re ready to start getting costs together and are keen to work with a proven renovations specialist, please book in a design consultation with our friendly team – we’d love to help bring your home renovation project to life!