What Is an Office Fitout and How Much Does It Cost?
- Jun 30
- 5 min read
An office fitout is the process of transforming a bare or existing commercial space into a functional, compliant, and purpose-built working environment.
This includes everything from partitioning and suspended ceilings to acoustic treatment, fire-rated wall assemblies, and architectural finishes.
For businesses in Perth and across Western Australia, fitout costs typically range from $45 to $180+ per square metre for walls and ceiling systems alone — before you factor in flooring, joinery, mechanical, or electrical trades.
Understanding what drives that range is essential before you commit to a budget or go to tender.
What Does an Office Fitout Actually Include?
A fitout is more than furniture and paint. The structural and compliance elements — walls, ceilings, and fire separation — form the backbone of any commercial interior.
These systems must meet Australian building codes and are often the most technically demanding part of the project.
Core fitout elements typically include:
Suspended ceiling systems (grid, concealed, or architectural)
Acoustic partitioning between offices, meeting rooms, and open-plan areas
Fire-rated wall assemblies separating tenancies or egress paths
Feature or architectural ceilings for reception areas, boardrooms, or client-facing spaces
Mechanical and electrical rough-ins coordinated with the ceiling and wall structure
How Much Does an Office Fitout Cost in Perth?
Costs vary significantly based on the systems specified, the complexity of the space, and site conditions. Below are indicative supply-and-install rates for walls and ceiling works in Western Australia.
Indicative Cost Rates (Per Square Metre)
System Type | Cost Range (per m²) |
Suspended Grid Ceiling (Exposed T-Bar) | $40 – $65 |
Suspended Grid Ceiling (Concealed) | $45 – $75 |
Acoustic Partitioning (Single Layer) | $70 – $110 |
Acoustic Partitioning (High Performance / Double Layer) | $110 – $160 |
Fire-Rated Wall Assemblies | $95 – $180+ |
Architectural / Feature Ceilings | $120 – $200+ |
These figures cover supply and installation for walls and ceiling trades only. A full fitout encompassing all trades — joinery, electrical, mechanical, and flooring — will carry a higher total project cost.
What Drives the Cost Up?
Many fitout budgets blow out not because of poor planning, but because of variables that weren't priced at tender. The four biggest cost drivers are:
1. System Specification Standard exposed grid ceilings are the most cost-effective option. Once you move to concealed systems, acoustic performance boards, or staggered stud layouts for sound isolation, both material and labour costs increase considerably.
2. Site Access and Height Ceiling heights above 3.6 metres require scaffolding or elevated work platforms, which adds labour hours and hire costs. Multi-storey sites with hoist restrictions, or working within live and occupied tenancies, further compound the time on site.
3. Fire-Rated Compliance Requirements Fire-rated assemblies are the most technically demanding systems in any fitout. In Australia, these must comply with AS 1530.4. Installers should hold a Certificate IV in Fire Wall Installation and provide documented evidence of compliance — a requirement that directly affects your occupancy certificate and the builder's registration.
4. Documentation Quality Incomplete or ambiguous drawings at tender are the most common cause of variation claims mid-project. Itemised, system-specific pricing based on detailed documentation is the most reliable way to hold costs.
What's the Difference Between a Cat A and Cat B Fitout?
These terms are widely used in commercial leasing and project management.
Category A (Cat A): The base building condition delivered by the landlord. Typically includes structure, base mechanical and electrical services, and basic finishes. It is functional but not occupancy-ready for a specific tenant.
Category B (Cat B): The tenant-specific fitout layered on top of Cat A. This is where partitioning, acoustic treatment, branded finishes, and specialist ceilings are installed to suit how the business actually works.
Most commercial fitout subcontractors — including walls and ceilings specialists — are engaged at the Cat B stage.
How to Get an Accurate Fitout Quote
Vague scope equals variable pricing. To get a reliable quote for your fitout:
Provide detailed, system-specific drawings — not just floor plans
Specify the performance requirements — acoustic ratings, fire-resistance levels, ceiling heights
Clarify site access conditions — hours of access, building restrictions, occupied or vacant
Request itemised pricing — broken down by system type, not just a lump sum
Engage a specialist subcontractor — one who manages both walls and ceilings under a single scope reduces trade gaps and accountability disputes
Why Use a Specialist Walls and Ceilings Subcontractor?
A "whole-of-scope" approach — where a single subcontractor manages both walls and ceilings — reduces the risk of coordination failures between trades.
It also simplifies accountability if issues arise with fire ratings, acoustic performance, or structural tie-ins.
Top Teng Walls & Ceilings is a Perth-based specialist subcontractor servicing commercial, government, medical, education, and multi-residential projects across Western Australia.
With expertise in fire-rated assemblies, acoustic partitioning, and architectural ceiling finishes, the team provides itemised pricing based on your specific documentation — no guesswork, no ambiguous lump sums.
Frequently Asked Questions
How long does an office fitout take?
A small-to-medium commercial fitout (under 500m²) typically takes 4–10 weeks for walls and ceiling works, depending on system complexity, sequencing with other trades, and site access. Larger or more complex projects will require a detailed programme from your subcontractor before works commence.
Do fire-rated walls need a special certification?
Yes. Fire-rated assemblies in Australia must comply with AS 1530.4. The subcontractor installing them should hold a Certificate IV in Fire Wall Installation and provide documented evidence of the system used. This documentation is required to protect your occupancy certificate and the builder's licence.
What is the cheapest ceiling option for an office fitout?
An exposed T-Bar suspended grid ceiling is typically the most cost-effective option, ranging from $40 to $65 per m² for supply and install. It also provides easy access to services above the ceiling plane, which is a practical advantage in most commercial environments.
Can fitout work be done in an occupied tenancy?
Yes, but it adds cost and complexity. Work in live tenancies requires noise management, dust containment, restricted working hours, and careful sequencing — all of which increase labour hours. Always disclose this condition at tender so it is priced accurately from the outset.
Why do fitout costs vary so much between quotes?
The most common reason is scope inconsistency. One subcontractor may price a basic grid ceiling while another prices an acoustic concealed system. Always compare quotes at the system level, not the total, and ensure each quote references the same drawings and specifications.
What areas does Top Teng Walls & Ceilings service?
Top Teng is based in Canning Vale, Western Australia, and services commercial projects across the Perth metropolitan area and broader WA. Contact the team on (08) 9455 5772 or at sales@topteng.com.au to discuss your project requirements.
