Perth’s CBD office vacancy rate sat around 15.1% through 2025, but tenants are overwhelmingly chasing fitted, high-quality space leaving older “B-grade” stock struggling to lease, even as rising fitout costs have become a major headwind for businesses weighing their options.
In other words, whether you’re moving into a new lease or making your current space work harder, the fitout-versus-renovation decision has become a commercial strategy question, not just a construction one.
I’m Chris Chester, and after years of running office fitout and renovation projects across Perth’s offices with Chest Constructions, this distinction trips up more business owners than almost anything else when planning a workspace project. Getting it right affects your budget, timeline, approvals, and how much your operations get disrupted.
In this guide, we’ll break down what separates a fitout from a renovation, how to tell which one your business needs, and what it typically costs and takes in Perth, so you can make the right call before committing to a scope, not discover it halfway through.
Quick Takeaways
- Fitout vs. Renovation: A fitout builds out an empty shell; a renovation upgrades an operational space, often with staff still on-site.
- Fitouts Cost More, Offer More Control: Built from scratch, fitouts cost more but deliver a fully tailored space.
- Renovation Costs Vary Widely: From a cosmetic refresh to full reconfiguration, depending on scope and compliance triggers.
- Many Projects Are Both: New leases often need base-area renovations, too, and renovations can grow into mini-fitouts.
Office Fitout vs. Office Renovation: What’s the Actual Difference?
An office fitout is the process of building out an empty or shell commercial space to make it ready for occupation. This includes installing partitions, services, finishes, and furniture in a space that previously had none. If you’ve signed a new lease and walked into a space that’s basically a concrete shell (bare walls, exposed services, no partitions), that’s where a fitout comes in.
There are generally two stages to a commercial fitout in WA:
- Cat A fitout: covers the basics — raised flooring, ceilings, basic mechanical and electrical services, and a blank canvas ready for the next stage.
- Cat B fitout: where your business identity comes to life — partitions, workstations, meeting rooms, breakout areas, branding, joinery, and finishes that reflect your company culture.
An office renovation, by contrast, is the process of modifying or upgrading a commercial space that is already fitted out and operational, typically while a business continues running. This might mean reconfiguring your floor plan to accommodate a growing team, refreshing tired finishes, upgrading your kitchen or bathrooms, or knocking down a wall to create a more open layout. Visit our renovation services page for more details.
Here’s a quick comparison:
| Fitout | Renovation | |
| Scope | Building out an empty/shell space | Modifying an existing fitted space |
| Typical cost | Generally higher (more from scratch) | Varies — can be targeted and cost-effective |
| Timeframe | Longer (full build process) | Often shorter, depending on scope |
| Disruption | Minimal (space usually unoccupied) | Higher (often working around staff) |
| WA approvals | Often required for new commercial fitouts | Depends on scope — structural changes need approval |
The biggest practical difference I see on-site is occupancy: fitouts typically happen in empty spaces, while renovations usually require working around staff who remain on-site. For a full breakdown of what approvals are needed and who signs off on them, see Commercial Fitout Approvals in WA.
How to Know Which One Your Business Needs
Most of the time, the answer becomes clear once you ask the right questions.
You likely need a fitout if:
- You’ve signed a lease on a new commercial space in Perth, and it’s currently bare or unfinished
- You’re relocating your business and want a complete fresh start
- You’re rebranding and want your new space to reflect a new identity from the ground up
- The current space has no usable infrastructure (no proper services, partitions, or finishes)
You likely need a renovation if:
- Your current office layout mostly works, but it’s looking tired or dated
- You’ve grown (or shrunk) and need to reconfigure existing space rather than move
- Specific areas — like reception, the kitchen, or meeting rooms need an upgrade rather than the whole floor
- You’re working with a tighter budget and want targeted improvements rather than a full overhaul
A simple test: if you’re starting in an empty or unoccupied space, it’s a fitout; if you’re improving a space your team currently works in, it’s a renovation.
Cost & Timeline Expectations in Perth
I get asked about budgets constantly, and while every project is different, there are some general patterns worth knowing.
Office fitouts tend to cost more than renovations of the same floor area, because every element, service, partition, flooring, ceilings, finishes, furniture, is being built from scratch. A full Cat A to Cat B fitout for a mid-sized Perth office represents a significant investment, but results in a space entirely tailored to how your business operates.
Renovation costs vary far more widely than fitout costs, ranging from a simple cosmetic refresh (paint, flooring, joinery updates) to a full structural reconfiguration. The key cost drivers are:
- Size of the space — more square metres means more materials and labour
- Scope of services work — moving electrical points, plumbing, or HVAC increases costs significantly
- Quality of finishes — premium materials and custom joinery add up
- Council and compliance requirements — particularly for structural changes or anything affecting fire safety, accessibility, or building services
I’ve covered specific budget pitfalls in The Hidden Costs That Can Blow Out Your Fit-Out Budget.
On timelines: a full office fitout in Perth typically takes several weeks to a few months, depending on size, complexity, and approval lead times. For the general permit and certification framework for commercial projects in WA, the Western Australian Building Commission is the relevant authority.
Renovations can be quicker for limited-scope work, but structural changes or council sign-off requirements, including change-of-use triggers, can extend timelines considerably (see Change of Use in WA Fitouts for common causes of delay).
The other major factor for renovations is whether the business stays open during works — phased renovations avoid full shutdowns but typically extend the overall timeline.
My advice is always the same: build in a buffer. Even the best-planned projects can hit snags with approvals, supply chains, or unexpected issues once we open up walls or ceilings.
Making the Right Choice (Plus When You Need Both)
When choosing a contractor for either project, check the following:
- Licensing and insurance — confirm the contractor is properly licensed for commercial work in WA and carries appropriate insurance
- Commercial experience — office projects have different requirements from residential ones, particularly around services, compliance, and working hours
- Portfolio of similar work — ask to see examples of completed office fitouts or renovations of a similar scale
- Clear communication — a contractor should be upfront about timelines, costs, and potential issues
Many real-world projects combine elements of both fitout and renovation. A business taking on a new lease (a fitout) may also need to renovate parts of the building’s common areas or adjust base building services. Conversely, a renovation can grow in scope to include newly created spaces that effectively require a mini-fitout.
Quick decision checklist:
| Situation | Likely Need |
| Space is currently empty/unoccupied | Fitout |
| Staying in current space but want changes | Renovation |
| Moving into a space needing base services + custom layout | Fitout |
| Project involves both new areas and updates to existing ones | Combination of both |
Conclusion
At the end of the day, the difference between an office fitout and an office renovation comes down to one simple question: are you starting with an empty space, or improving one you already occupy? A fitout builds everything from the ground up, ideal for new leases, relocations, or a complete brand refresh. A renovation works with what’s already there, better suited to layout tweaks, refreshed finishes, or targeted upgrades while your business keeps running.
Both come with their own cost structures, timelines, and compliance considerations in WA, and plenty of projects end up being a mix of both. The right call depends on your space, your budget, and where your business is headed.
If you’re still not sure which one applies to your situation or you’d like a clearer picture of costs and timelines for your specific space, get in touch with the team at Chest Constructions. We’ll walk through your project with you, no obligation, and help you figure out exactly what it needs to get done right, on time, and on budget.
FAQs
1. What’s the main difference between an office fitout and an office renovation?
A fitout builds out an empty or shell commercial space from scratch — services, partitions, finishes, and furniture all included. A renovation upgrades a space that’s already fitted out and operational, often while your team continues working in it.
2. Which is more expensive — a fitout or a renovation?
Fitouts generally cost more per square metre since every element is built from the ground up. Renovation costs vary widely, ranging from a simple cosmetic refresh to a full structural reconfiguration, depending on scope and services work involved.
3. Do I need council approval for an office fitout or renovation in Perth?
It depends on the scope. New commercial fitouts often require approvals, and renovations involving structural changes, change of use, or building services typically need council sign-off too. The WA Building Commission outlines the general permit framework for commercial projects.
4. Can a project involve both a fitout and a renovation?
Yes — this is common. A new lease may require a full fitout of your tenancy plus renovation work to shared building areas or base services. Likewise, a renovation can expand to include newly created spaces that effectively need their own mini-fitout.
5. How long does an office fitout or renovation typically take in Perth?
A full fitout usually takes several weeks to a few months, depending on size, complexity, and approval timeframes. Renovations can be quicker for limited scope work, but structural changes or council requirements can extend the timeline — especially if the business needs to stay operational throughout.