When it comes to transforming your office space, choosing between a Cat A and Cat B office fit out is a crucial decision. Each offers a different level of finish, customisation, and functionality, directly impacting how your workspace will serve your team and business goals. But how do you know which one is right for you?
In this guide, we’ll break down the key differences between Cat A and Cat B office fit outs, helping you make an informed choice tailored to your business needs.
What Is a Cat A Office Fit Out?
Think of a Cat A office fit out as the foundation of your office space, the bare essentials that make the area safe, functional, and ready for further customisation. Typically completed by landlords or property developers, a Cat A fit out prepares the space for tenancy but leaves the final touches up to the incoming business.
Key Features of a Cat A Fit Out:
- Basic electrical and lighting systems
- HVAC (heating, ventilation, air conditioning)
- Fire safety systems (smoke detectors, sprinklers, fire alarms)
- Plumbing and basic restroom facilities
- Suspended ceilings and raised flooring
- Neutral wall finishes and standard flooring
The result? A clean, functional, and flexible blank canvas. It’s move-in ready in terms of infrastructure but lacks any personalisation or branding.
When to Choose a Cat A Fit Out:
- You’re a landlord preparing a space for future tenants
- Your business wants a blank slate to implement a completely bespoke design
- You have existing furniture or design elements to bring in

What Is a Cat B Office Fit Out?
While Cat A gives you the structure, Cat B turns it into a tailored workspace. This is where the design and functionality of the office take shape, from branding to layout and everything in between. A Cat B fit out focuses on the specific needs of your business and how your team will use the space.
Key Features of a Cat B Fit Out:
- Bespoke partitioning and meeting rooms
- Reception areas and breakout spaces
- Office furniture, desks, and storage
- Kitchen and dining areas
- Advanced IT infrastructure and AV systems
- Interior finishes, decor, and company branding
The goal of a Cat B fit out is to create a space that reflects your brand identity, fosters productivity, and enhances employee well-being.
When to Choose a Cat B Fit Out:
- You want a fully tailored, move-in-ready workspace
- Your business values branding and employee experience
- You need a functional layout designed around your team’s workflow

Cat A vs. Cat B: Which Is Right for Your Business?
The choice between Cat A and Cat B ultimately comes down to your business needs, budget, and timeline.
| Feature | Cat A | Cat B |
| Purpose | Basic infrastructure setup | Fully customised workspace |
| Completed By | Landlord or developer | Tenant or design-build company |
| Move-In Ready? | No | Yes |
| Customisation | Minimal | High |
| Ideal For | Landlords, future tenant flexibility | Businesses seeking tailored spaces |
Considering Something In-Between?
If you’re after a balance between a blank canvas and a fully finished space, a Cat A+ fit out might be the answer. It offers a partly furnished, functional office that’s ready for immediate use but still leaves room for minor customisations.
Making the Right Choice
Still unsure which fit out suits your business? Think about the following:
- Timeline: Need to move in fast? Cat B could save time.
- Budget: Cat A offers flexibility but often means more upfront investment in customisation later. Cat B can be more cost-effective if you want a fully ready space.
- Brand Identity: If showcasing your brand is a priority, Cat B is the way to go.
At the end of the day, the right office fit out is one that aligns with your business goals, team needs, and future plans.
Ready to Transfer Your Office?
Get in touch with our team today to discuss how we can help design a workspace that not only looks great but also works perfectly for your business.

