Understanding Core, Cat A and Cat B Fit-Outs: All You Need to Know!

When it comes to office design, understanding the differences between Core, Cat A and Cat B fit-outs is essential for businesses looking to create efficient, functional and beautiful workspaces. These different types of fit-outs play distinct roles in transforming an old building into an operational workspace that meets the unique needs of your brand.

Core Fit-Out?

Think of Core (also known as Shell and Core) as the strong, weatherproof “blank frame” of a building. At this stage, the space has the essential bones in place and is ready to be transformed. 

You’ll typically find: 

• Concrete and metal framework 

• External and structural elements 

• Core building utilities 

• Bare structural floors and walls 

• Weatherproofing 

A Core fit-out provides maximum flexibility, creating a solid base that can be adapted to suit any future design or layout. 

Cat-A Fit-Out?

A Cat A fit-out takes the bare frame of a Core fit-out and makes it functional and move in ready but still leaves plenty of room for personalisation. It’s the stage where the essentials are installed, so you can bring your own brand and style to life.  

This typically includes: 

• Basic lighting, heating and air conditioning 

• Electrical points, plumbing connections and fire detection systems 

• Walls, suspended ceiling and raised flooring with basic finishes 

• Basic toilet facilities 

A Cat A fit-out turns the building from a skeleton into a “blank canvas” ready for you to make it your own. 

Cat-A+ Fit-Out?

A Cat A+ fit-out is the sweet spot between a basic Cat A space and a fully customised Cat B. It’s for businesses who want to move in and get going, without the time and cost of a full design and build process. 

Think of it as an office that’s already set up with the essentials, so your team can start working from day one.  

You’ll typically find: 

• Meeting rooms and collaborative spaces 

• Basic furniture and workstations 

• IT infrastructure 

• Kitchens or breakout areas 

• Power and lighting systems

With finished ceilings, flooring, partitions and ready-to-use facilities, a Cat A+ fit-out removes the hassle of sourcing furniture or installing tech. While it’s functional and polished, you still need to inject your own branding and personality. 

Cat-B Fit-Out?

A Cat B fit-out is where your office truly comes to life. This is the final stage of the transformation, when the space is tailored to your exact needs, style and brand turning a functional office into a place that feels like home for your team and is inspiring for your clients. 

Here’s what’s typically included: 

• Bespoke partitions and internal walls to create offices, meeting rooms and breakout areas 

• Premium floor finishes such as carpets, tiles or wood 

• Specialist lighting for different zones like focused task lighting or mood lighting 

• Bespoke furniture and fixtures 

• Fully equipped kitchens and café areas 

• Branding elements like logos, artwork, plants and finishes

A Cat B fit-out blends functionality with personality, combining the practical features you need with the design details that make your space memorable. It’s about creating a fully operational, branded environment that reflects your culture, supports your way of working and makes an impression from the moment you walk in. 

Why Choose a Cat A or Cat B Fit-Out?

When choosing between a fit-out, it’s essential to understand the business's needs and priorities.

Factors to Consider:

• Cost: A Cat A fit-out is typically more affordable and quicker to complete than a Cat B fit-out, which involves more customisation. 

• Time: If a business needs to move into a space quickly, a Cat A+ fit-out may be a good choice, as it offers a near-ready office that requires minimal adjustments. 

• Branding and customisation: If a business wants to reflect its unique brand identity and create a space that aligns with its values, a Cat B fit-out is the way to go.

Conclusion

By understanding these stages, businesses can make informed decisions about the right fit-out for their specific needs and create a workspace that fosters productivity, collaboration and overall success.

Need advice on your office fit-out?

Get in touch with us today to explore how we can assist you in designing a space that works for your team and reflects your brand.  Whatever you’re looking for, we can support you at every stage.