Renovation Builders

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 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: 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 likely need a renovation if: 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: 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: 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