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What are the Different Types of Office Fit Out?

An ideal workplace needs more than just new paint and furniture. It's about making a space that was once empty functional and branded. "Office fit out" is the name of this process that gets a room ready for a business to use.

In this blog post, we'll talk about what "office fit out" really means, the different types of office fit out, and the parts that make them up, like shell and core fit out, Cat A office fit out, Cat A+ fit out, and Cat B fit out.

We'll also show you how an average office fit out works and contrast various types of business fit out.

What is the Office Fit Out?

At its core, “what is office fit out” basically means transforming an interior space-usually given as a bare structure-into a place to work that is ready to be occupied. It means turning the inside from rough concrete and bare systems into polished, brand-named areas where teams can work well together.


As part of an office build out, the walls, ceilings, floors, lighting, heating and cooling, as well as useful areas like kitchens, meeting rooms, and break out areas, are set up. The goal is to make a workspace that is helpful, fits with how the company works, and helps people get their work done. It's the process of turning an empty shell into an office that works well and inspires people.

Office Fit Out Categories: Shell & Core, Cat A, Cat A+, and Cat B

When professionals talk about office fit-out categories, they usually talk about four main types, or phases, that show how much work has been done on the space:

1. Shell and Core Fit Out

The first step is shell and core fit out, which is also called the base building. The outside of the building is done, but the floors, walls, and ceilings are still not done on the inside. Also, services like lights and HVAC have not been brought in. Most of the time, though, simple things like stairs, lifts, and main electrical and plumbing lines are already there, giving tenants a place to start.

2. Cat A: Fit Out of the Office

The Cat A fit out (short for Category A) makes the area easy to use and basic. The landlord or developer sets up a "blank canvas" for tenants to move into. This includes basic services like lighting, air conditioning, raised entry floors, ceilings, basic finishing, and fire systems.

3. Cat A+ Fit Out

Cat A+ fit out, also known as plug-and-play space, is in the middle of Cat A and Cat B. Here, owners go even further by setting up dividers, furniture, kitchens, breakout areas, and IT/power so that tenants can move in almost right away with little need for branding or changes.

4. Cat B Fit Out

The Cat B fit out is made to fit the tenant's brand, lifestyle, and needs. It includes dividing walls, design-driven finishes, furniture (FF&E), kitchens, meeting rooms, IT installs, signage, and finding your way around the office. In other words, it finishes the office so that it fits the tenant's style and way of working.

What are the Different Types of Commercial Fit Out?

In general, the different types of commercial fit out are organized in the same way that office spaces are: there is shell and core, then Cat A, Cat A+, and Cat B. Each step builds on the last, turning a space from a blank canvas into a fully customized place that fits the needs of the people who live or work there.

But for each type of business, specific priorities are different:

1. Shop Fit Outs

  • The main goal is making people feel welcome.
  • Pay close attention to the shows, the lighting, the signs, and the flow of people coming and going.
  • Designed to get people excited and help make sales.

2. Medical or Clinic Fit Outs

  • Focus on how well the space works and how it follows the rules.
  • Often need special building materials, water systems, and cleaning supplies.
  • Must follow strict healthcare rules while still making patients feel at ease.

3. Warehouse or Industrial Fit Outs

  • Meant to be useful and last a long time.
  • Should be safe, have durable finishes, and strong systems to move and store things.

From shell and core to a fully customized Cat B space, the general fit out process is the same for any type of business. This keeps the room in good shape and lets you use it in different ways.

Steps from Idea to Office Fit Out Completion

Most of the time, setting up an office is done in a few planned steps:

  • Making Plans and Designs: Figure out what you need, how much money you have, and whether you want to go straight to Cat B, Cat A, or Cat A+.
  • Getting the Shell and Core: Developers give you a building shell that has all the basic services you need.
  • When it comes to Cat A Fit Out: Set up the building's basic systems, such as the electrical, HVAC, raised floors, ceilings, and finishes.
  • Cat B Fit Out: Branding, furniture, walls, kitchens, tech, and comforts can all be changed to fit your needs.
  • Handover and Move In: Make sure the place meets the rules, has been tested, and is ready to be used.
  • Optional Reinstatement or Future Modifications: Some landlords expect tenants to clean up the area when the lease is up, but more and more, people are encouraged to reuse spaces.

Why These Fit Out Types Matter

It's important to know about the different types of office fit out because each has its own pros and cons that depend on the goals, schedule, and budget of the tenant.

  • Its flexibility is one of the best things about it. Cat A fit out is a basic empty space that tenants are free to plan, layout and brand to their preference. Cat A+ fit outs are ready to use offices that only require plugging in and playing with, ideal in businesses where speed and convenience are required. Cat B fit out is a completely tailored fit into the culture, work processes and brand of a particular business.
  • The appropriate choice of technique can save both time and money. In some cases, it can be cheaper to go straight to Cat B without doing Cat A. This prevents insertion of Cat A features where unnecessary as they can be eliminated or modified to suit a tenant design. Following simple office design tips can help make the most of each type.
  • Another crucial thing to think about is sustainability. Reusing the designs or materials used by previous tenants can save businesses money and lower the carbon footprint that businesses take extra measures. The sustainable fit-out solutions minimize waste and respond to the increasing demand of environmentally friendly workplaces.

How Craftex Brings Fit Out Expertise to Life

Craftex focuses on providing commercial fit outs that are of high quality which are durable. Their site does not describe all kinds of fit out with a detailed description, but their work in London is renowned for being durable and well made.

1. Eco-Friendly, Energy-Saving Solutions

Craftex applies eco-friendly materials and fits power saving mechanisms in every project. Their fit outs are healthy, sustainable and affordable with BREEAM and WELL standards. These solutions are beneficial to your business and to the environment.

2. Future-Ready Workspaces

Craftex does not just build spaces - they are future-ready businesses. Their fit outs are smart infrastructure friendly, AI-friendly and fast-growing. The construction of all projects is done to high standards with consideration to safety, functionality and technological readiness.

3. Expertise in Fit Out Categories

Craftex delivers excellent Cat A+, Cat B, and custom fit outs, especially where brand-driven design, high technical standards, and sustainability matter most, with a clear reference to the guide for Cat A, Cat A+ and Cat B Fit Out. These fit outs are designed to match the unique culture, workflow, and branding needs of each business.

Conclusion

Some types of office build out are Cat A, Cat A+ and Cat B. If you want to turn a blank room into a busy office, you need to know about them all. You have to work together, plan, and decide how to spend your time and money in order to set up an office space design When a business needs to change a lot, be quick, be personalized, and last a long time, it needs to make the best choice.

One thing that makes Craftex unique is that they do more than just fit outs. They also do strategic interiors that last and are ready for the future. These interiors will help your business and your environmental goals.

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