What Is a Commercial Fit-Out? A Clear Definition for Australian Businesses
If you've signed a lease on a commercial space and walked into bare concrete floors, exposed ceilings, and no walls, you've seen exactly why commercial fit-outs exist. A commercial fit-out is the process of turning a raw or semi-finished commercial space into a usable, fully functional environment for a business to occupy. It's the work that happens between handover from the landlord and the day a business opens its doors.
Whether it's an office in the Sydney CBD, a retail store in Bondi Junction, or a small hairdresser in Double Bay, a fit-out is what makes the space yours. This article explains what's actually involved, the different types of fit-outs, the typical stages, and how a commercial fit-out differs from related work like renovations and refurbishments.
What is a commercial fit-out?
A commercial fit-out is the construction work that fits out the interior of a commercial property so a business can operate from it. It usually starts from a bare shell or a partially completed space provided by the landlord and ends with a tenant-ready environment that includes everything from partitions and flooring to lighting, HVAC, electrical, and branding.
In practical terms, fit-outs can include:
● Partition walls, ceilings and flooring
● Lighting, electrical and data cabling
● Heating, ventilation and air-conditioning (HVAC)
● Plumbing for kitchens, bathrooms, and wash bays
● Joinery, built-in furniture and fixtures
● Branding, signage and finishes
Fit-outs matter because commercial property is rarely delivered ready to use. A landlord typically hands over a base building or a basic fitted space, and it's up to the tenant (or in some cases the landlord) to complete the work that makes the space operational for a specific business and its customers.
Commercial fit-out examples by space type
The way a fit-out comes together depends entirely on the type of business using the space. Here are a few common examples.
Office fit-outs
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Office fit-outs typically include workstations, meeting rooms, breakout areas, kitchens, reception zones and IT infrastructure. The design focus is usually on how staff move through the space, how teams collaborate, and how to balance open-plan working with quiet rooms. Acoustic treatment, lighting, and air quality all play a role in making a workspace feel productive rather than draining.
Retail fit-outs
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Retail fit-outs are built around the customer experience. Display joinery, point-of-sale counters, lighting, signage, and dressing rooms all need to support how customers move through the store and find what they're looking for. A small hairdressing salon in Bondi or a boutique in Paddington, for example, might need wash basins plumbed in, custom mirrored stations, considered lighting, and a polished reception area, all delivered within a tight timeframe so the business can open and start trading. Altimo Homes delivers fit-outs like this across Sydney's Eastern Suburbs, where small retail and service businesses often need quality work completed quickly between leases. You can see examples on our projects page.
Hospitality and healthcare fit-outs
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Cafés, restaurants and bars need commercial kitchens, grease traps, ventilation, food prep areas, and front-of-house finishes that handle constant wear. Medical and dental clinics have stricter requirements again, with infection control, accessibility, and specialised plumbing or gas services often involved. Both space types need a builder who understands the regulatory side as well as the build.
Common commercial fit-out stages
Most commercial fit-out projects in Australia follow three broad stages. Knowing which one applies to your space helps you understand exactly what work is needed before you can move in.
Shell and core (or cold shell)
This is the base building condition. The structure is complete, but the interior is bare. You'll typically see exposed concrete floors and ceilings, capped services, and no internal walls. Everything that makes the space usable still needs to be added. New commercial buildings are often handed over to tenants in this state.
Category A fit-out
A Category A (or Cat A) fit-out is usually completed by the landlord and brings the space up to a basic, functional standard. This generally includes raised floors or finished flooring, suspended ceilings, basic lighting, HVAC distribution, fire services, and finished walls. It's a usable space, but it's neutral and doesn't reflect any specific tenant or brand.
Category B fit-out
A Category B (Cat B) fit-out is where the tenant takes over and makes the space their own. This is where layout, branding, joinery, meeting rooms, breakout zones, kitchens, and any operational features get built in. By the end of a Cat B fit-out, the space is ready for a business to move in and start trading.
Some buildings skip Cat A entirely, with the tenant taking on both stages at once. Others come fully Cat A finished, leaving only the Cat B work.
Commercial fit-out vs related terms
Fit-outs are often confused with renovations, refurbishments, and interior design work. They're related, but they're not the same thing.
Fit-out vs renovation
A renovation involves changing or updating an existing finished space. You're working with walls, services, and finishes that are already in place. A fit-out, by contrast, usually starts from a bare or near-bare shell and builds the interior from scratch.
Fit-out vs refurbishment
A refurbishment is a refresh of an existing fit-out. New finishes, updated joinery, fresh paint, maybe some layout tweaks, but the bones of the space are largely retained. Refurbishments are common when a business renews a lease and wants the space updated without a full rebuild.
Fit-out vs interior design
Interior design is the planning and design side of a project. It covers layouts, material selections, colour palettes, lighting design, and how a space looks and feels. A fit-out is the construction side that brings those designs to life. The two work together, but they're delivered by different specialists.
Frequently asked questions about commercial fit-outs
What does a commercial fit-out include?
A commercial fit-out includes everything needed to make a bare or semi-finished commercial space ready for a business to operate from. That generally covers partitions, ceilings, flooring, lighting, electrical, data, HVAC, plumbing, joinery, fixtures, branding, and signage. The exact scope depends on the type of business and whether the landlord has already completed a Cat A fit-out.
Who is responsible for a commercial fit-out?
Responsibility is set by the lease. In most cases, the landlord delivers the base building (and sometimes a Cat A fit-out), and the tenant is responsible for the Cat B work. Some leases include a fit-out contribution from the landlord, where they cover a portion of the tenant's costs. Always check the lease before pricing the project.
How long does a commercial fit-out take?
A small retail or hairdresser fit-out can be completed in 4 to 8 weeks. A standard office fit-out usually runs 8 to 16 weeks, depending on size and complexity. Larger projects with custom joinery, complex services, or council approvals can take 6 months or longer. Lead times on materials and finishes are often the biggest variable.
How much does a commercial fit-out cost?
Costs vary widely based on the type of space, the finishes specified, and the condition of the existing building. As a rough indication, basic office fit-outs in Sydney start from around $1,000 per square metre, mid-range projects sit between $1,500 and $2,500 per square metre, and premium or high-spec fit-outs can run well above that. Retail and hospitality fit-outs are priced differently again because of equipment and services.
Do you need permits for a commercial fit-out?
Most commercial fit-outs in NSW require some level of council approval. Minor works may be covered by a Complying Development Certificate (CDC), while larger projects or change-of-use applications usually need a Development Application (DA). Food, medical, and licensed venues have additional compliance requirements. A builder familiar with local council processes can confirm what's needed before work starts.
What are the main stages of a commercial fit-out?
Most projects move through design and planning, approvals, demolition or strip-out (where applicable), services rough-in, partition and ceiling installation, joinery, finishes, and final commissioning. Each stage needs to be coordinated carefully to avoid delays, especially when multiple trades are working in a compact commercial space.
What is the difference between a fit-out and a refurbishment?
A fit-out builds out a bare or semi-finished space from the shell. A refurbishment updates an existing fit-out, usually with new finishes, joinery, and layout changes. If the bones of the space are staying largely as they are, it's a refurbishment. If the interior is being built from scratch, it's a fit-out.
Need help with a commercial fit-out in Sydney's Eastern Suburbs?
Altimo Homes delivers commercial fit-outs across Sydney's Eastern Suburbs, from small retail and hairdressing salons through to larger office and hospitality projects. If you're planning a fit-out and want a clear scope, a realistic timeframe and quality construction throughout, get in touch for a no-obligation conversation about your project. You can also learn more about Altimo Homes and the work we deliver across the Eastern Suburbs.