CAT B Office Fit Out: How to Design for Success

An office should be more than a space to work—it’s a statement about who you are as a company. That’s why a CAT B office fit out is such a critical opportunity. It allows you to transform an empty shell into a workspace that reflects your brand, supports your team’s needs, and creates an environment where people want to be.

This guide walks you through the essential strategies for designing a successful CAT B fit out—covering everything from workplace assessments and collaboration areas to furniture, acoustics, tech and branding.

What Is a CAT B Fit Out?

Before tenants move into a commercial office, they usually receive it in a basic condition known as CAT A. At this stage, the landlord has handled the essentials—like lighting, ceilings, raised flooring and toilets—but left the space blank and unbranded.

The CAT B phase is where the transformation begins. This is funded by the tenant and involves turning that blank space into a functioning, fully branded office that suits their operational style and team needs. It includes everything from layout planning and lighting to furniture, meeting rooms, decorations, and branding.

Because the process is complex, many companies work with an experienced fit out company to manage the design and delivery professionally.

Start with a Clear Assessment

The first step is to define what you want your new space to achieve. Whether it’s improving the employee experience, adapting to hybrid working, or accommodating a growing team, clarity at this stage is key.

You can gain valuable insights by observing how your current space works, identifying what’s underused or overcrowded, and speaking to staff about what they need. Reviewing similar projects for inspiration can also help. Collecting data—such as occupancy rates or survey feedback—will guide your design decisions and provide a more confident foundation for your fit out.

Design for Collaboration

Recent studies show a clear shift towards spaces that support collaboration. Employers are prioritising environments that encourage teamwork, problem-solving, and informal interaction—especially as more businesses adopt flexible and hybrid working patterns.

A well-designed CAT B fit out supports this by offering a mix of spaces where people can meet, brainstorm, or catch up informally. These might range from boardrooms and breakout zones to comfortable areas for impromptu meetings. Even small, unused corners can be transformed with thoughtful furniture placement to support spontaneous collaboration.

Create a Variety of Work Settings

The most effective offices give employees a choice in how and where they work. Research from Leesman found that offices offering a variety of seating and workspace types had significantly higher satisfaction scores.

This doesn’t mean cluttering your space—it means creating purposeful zones for different needs. Comfortable booths can provide quiet areas for focused work. Pods or soft seating can support casual meetings. And open plan desks still have a role for day-to-day tasks, especially when supported by alternatives that break the monotony.

Build in Flexibility

If you’re signing a multi-year lease, flexibility in your design is critical. Your needs may change, and your space should be able to change with them.

Furniture that can be moved, folded or repurposed will give you the ability to reconfigure the layout without major disruption. Flip-top tables, sliding partitions and modular seating are practical options that allow you to scale or adapt areas depending on how your team grows or evolves.

Also consider how your team might change over time. Planning for future headcount now will save money and hassle later.

Design a High-Impact Breakout Area

Breakout areas are a vital part of the modern office. They support wellbeing, improve collaboration, and help attract and retain talent. In fact, some companies are dedicating entire floors to these spaces.

Even if your office is smaller, a well-designed breakout space can still offer big value. Good lighting, comfortable seating and a thoughtful layout can help create a space that encourages people to take a break, connect with colleagues or work in a more relaxed setting.

Invest in Smart Tech

Office tech is moving fast, and smart solutions are becoming a must-have for modern workspaces. Digital room booking systems help teams avoid scheduling conflicts. Biometric access control improves security and efficiency. And AI-powered systems can optimise everything from lighting to desk bookings.

Express Your Brand Identity

One of the biggest benefits of a CAT B fit out is the ability to express your company culture through the workspace design.

Branded reception desks create strong first impressions. Custom wall graphics or murals bring personality and meaning to your space. Glass manifestations not only add visual interest but also improve safety and privacy. Even the layout and furniture choices can reflect your business ethos.

If you want a truly memorable space, think creatively. Companies like Hudl have used graffiti-style murals and custom map designs to reflect who they are and where they’re from—creating spaces that inspire employees and engage visitors.

Choose the Right Fit Out Partner

Finally, your choice of fit out contractor can make or break your project. A good partner will guide you through the entire process—from design and planning to build and compliance—helping you avoid delays and stay on budget.

Rap Interiors Project Manager, Jim Buddin, advises that while cost is important, it shouldn’t be the only consideration. Trust, experience, and regulatory knowledge are essential for delivering a space that’s not only beautiful, but also safe and compliant.

Conclusion

A successful CAT B office fit out starts with preparation. When you define your goals, assess your workplace needs, and plan for the future, you’ll create a space that works on every level. From improving workflow to supporting your culture and brand, a thoughtful design can bring long-lasting benefits.

Working with the right team will give you the expertise and confidence needed to bring your vision to life. The result is an office that not only looks great—but also supports your people, enhances productivity, and delivers real return on investment.

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