A reasonable Sydney office fitout for a conventional commercial tenancy generally lands between roughly $1,200 and $2,500 per square metre, with most projects clustering around $1,500 to $2,000. That range is the headline, and it is almost always the first thing a tenant wants to know. It is also the number that moves most often, because per-square-metre cost is an output of a dozen decisions rather than a fixed rate the industry quotes from a table.
Understanding a fitout cost breakdown is therefore less about finding the right number and more about following the cascade of drivers underneath it. Partitions, services, ceilings, finishes, preliminaries, and a cluster of non-trade line items each take a predictable share of the total. Where a project sits inside the per-square-metre range is decided almost entirely by what is happening inside those shares, and by a smaller number of factors that move them all at once.
What The Square Metre Rate Actually Contains
The square metre rate is a useful anchor, not a quoted product. Inside it sits a construction component (the trades doing physical work), a coordination component (management, documentation, supervision), and a compliance component (fire, certification, landlord approvals). The ratios shift between projects, but on a standard commercial fitout the construction trades account for somewhere between 60 and 70 per cent of the total, with the rest spread across preliminaries, coordination, compliance, and close-out.
A tenant reading a quote that only shows the trade numbers is reading two-thirds of the story. The other third is where most of the variance between quotes lives, because the coordination and compliance components do not scale linearly with floor area. A smaller fitout in a complex building can carry a higher per-square-metre rate than a larger fitout in a simpler one for exactly this reason, which is also why how much a commercial office fit-out costs per square metre does not land on a single number even in the same city.
Partitions And Doors: The Largest Single Share
On most Sydney commercial fitouts, partitions and their associated doors are the largest single line item by value. Depending on the room count and the wall type, they can carry 20 to 30 per cent of the total fitout cost, sometimes more in layouts heavy with glass or acoustic rooms.
Three things drive that share more than anything else. Room count, because each enclosed room adds a wall perimeter and a door. Height, because full-height walls carry more cost than part-height ones and require coordination with slabs, bulkheads, or ceiling grids. Material, because the gap between a standard plasterboard wall and an acoustic glass wall with upgraded hardware is wide enough to change the total by a noticeable margin. Changes to partitions late in the programme tend to ripple, because almost every other trade has already planned its work around the room layout, which is part of why cost versus performance across office partition systems is a decision best resolved early.
Services: Electrical, Mechanical, Fire, And Data
Services as a group carry the second-largest share of a fitout cost, generally between 20 and 25 per cent combined. Inside that share, electrical and data make up the largest piece, with mechanical, fire, and hydraulic adjustments distributed behind them.
Electrical scope is a lot more than power points and light fittings. Distribution board changes, cable containment, switching strategies, emergency and exit lighting, testing, and certification all sit inside the line. Lighting selection on top of that can shift the share upward if non-standard fittings require extra support framing or specialist installation. Mechanical changes are a smaller dollar share but carry disproportionate risk, because diffuser relocations, controls changes, and capacity checks often require the base building engineer to get involved. Fire services also sit on the critical path of most fitout programmes, and how fire services affect office layout decisions is a useful lens for reading this part of a quote with more confidence.
Where services coordination is handled well, the cost of this group behaves roughly in line with scope, because each trade has what it needs when it needs it, and no one is waiting on anyone else. Where it is handled poorly, it is one of the most common locations for variations on site. The coordination overhead shows up as cost rather than as obvious design changes, which is why two fitouts with visibly similar drawings can still land at very different service subtotals on the quote sheet.
Ceilings, Lighting Integration, And The Ceiling Plenum
The ceiling share of a fitout cost is often smaller than tenants expect on the headline, around 8 to 12 per cent, but it carries leverage well beyond its dollar weight. The ceiling is where almost every service trade interfaces, which means a decision about ceiling type, grid, or access affects electrical, mechanical, fire, and data work directly.
A ceiling retained from the existing fitout saves money on the line item but can add cost elsewhere if it no longer suits the new layout or hides services that need to be reached. A replaced ceiling adds to the line item but can simplify the rest of the project. The decision between the two is rarely obvious from the drawings and almost always depends on what is happening inside the plenum. Ceiling tile selection, access provision, and long-term maintenance also sit inside this share, and the quality of those choices is where fitout teams either protect or leak margin inside the ceiling line.
Finishes And The Visible Layer
Finishes, paint, flooring, and the visible detail of the fitout carry roughly 10 to 15 per cent of the total. This is the part of the fitout that staff and visitors see, and it is also the part with the largest gap between a competent delivery and an exceptional one at the same budget.
The quiet cost driver inside finishes is preparation. Uneven substrates, retained flooring that needs work before new material lands on top, and late changes to colour or specification can all add labour hours without moving the material cost. Finish decisions made once and held are noticeably cheaper than finish decisions revisited after the contractor has ordered. This part of the scope is also where a tight brief pays off hardest: a finish schedule that is clear before pricing begins produces a cleaner number and a smoother delivery.
Preliminaries, Management, And Compliance: The Invisible Slice
Preliminaries, site management, compliance documentation, temporary services, protection works, safety, and close-out together carry 12 to 18 per cent of a Sydney fitout, sometimes more in a complex building. This slice is almost always invisible to a tenant on a first reading of a quote, because it does not correspond to anything the staff will see in the finished space.
It also does not scale with floor area. A small fitout in a difficult tower can carry the same preliminaries dollar value as a larger fitout in a simpler building, because most of the time the cost is driven by the building’s rules rather than by the size of the project. After-hours access, restricted loading times, and strict protection requirements all sit in this slice, and in older buildings lift access and loading dock constraints can materially change its weight in the total.
Reading a quote with this slice in mind often explains most of the gap between two otherwise similar numbers. If one quote has visibly planned for the building and the other has not, the better-planned one is generally the more trustworthy answer even when its headline number is higher.
What Moves The Whole Picture Up Or Down
After the trade-by-trade shares are understood, three external factors move the whole picture at once. Base building condition is the first: older tenancies with tired ceilings, crowded plenums, or out-of-date services add cost across almost every trade. Programme constraint is the second: live-office works, short after-hours windows, and constrained access add preliminaries and labour hours without adding scope, which is the central dynamic in live office fitouts and staging works without disrupting the business.
Scope clarity is the third. A fitout priced from a tight, complete brief sits lower in the range because the contractor has less risk to absorb. A fitout priced from a vague brief sits higher because the contractor has to protect against the unknowns. The gap between the two is rarely small, and tenants who compare “identical” quotes on very different briefs end up surprised when the cheaper one becomes the more expensive project.
The other factor is the number of decision makers. The share of preliminaries and coordination goes up sharply when too many people are involved in day-to-day decisions, because every change costs time across multiple trades, which is the pattern behind the cost of having too many people involved in a fit-out. Fewer, clearer decisions produce lower total cost without changing the scope at all.
If you are working through an office fitout cost breakdown for a Sydney tenancy and want help reading the numbers against a real layout, we can help, whether that is as part of a full complete office fit-out or a targeted partition, ceiling, or services scope.
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