Cat A vs Cat B Office Fit-Outs: What’s The Difference?

Understanding the Office Fit-Out Process & How to Choose the Best Option for Your Business

The office fit-out process can significantly impact the productivity, well-being, and branding of your business. Understanding the different requirements of businesses and the nuances of various levels of office fit-outs can help you make the right choice.

In this article, we’ll explore the differences between Category A and Category B office fit-outs and provide guidance on selecting the best option for your business.

Meeting room with glazed partitions

Different Types of Office Fit-Out

Office fit-outs come in various types, tailored to the specific needs of businesses. The options range from shell and core spaces through to fully furnished ‘Cat. B’ fit-outs.

In most cases, each stage of the process will need to be completed before the space is ready to be used by office staff. The type of office refurbishment project that you require will therefore most likely depend on what kind of company you represent.

For example, commercial landlords or developers may have significantly different needs from business requiring usable and tailored office space that’s ready for work. Let's take a closer look at the different types of office fit-outs and the differences between them.

Shell & Core Office Fit-Out

The first stage in the office fit-out process, shell and core office spaces refer to a building's bare bones, providing a blank canvas for customisation. This type of fit-out includes structural components, external walls, and essential services, such as electrical and plumbing systems.

A project at the shell and core stage lacks any internal partitions or finishes. This allows businesses to design the space according to their needs, which means it will be necessary to allocate suitable time and budget to bring the office to a usable state.

At the shell and core stage, an office will not be ready for its end users. However, landlords may obtain buildings at this stage, ready for the next steps in the process. Alternatively, companies may opt to take control of a premises at the shell at core stage and then complete the remaining works themselves using specialist partners.

Office conference room table

Components & Features of Shell and Core Fit-Outs

Shell and core fit-outs typically include the following:

Structural Framework
The building's load-bearing elements, such as columns, beams, and floors, form the basic skeleton of the structure.

Building Envelope
The external walls, windows, and roofing protect the building from environmental factors like weather, noise, and other external influences.

Common Areas
Shared spaces, such as lobbies, stairwells, elevators, and restrooms, are typically included in shell and core projects to ensure a functional building, particularly if parts of the building are to be sublet to a number of different tenants.

Basic Infrastructure
A Cat. A fit-out typically includes essential building services and infrastructure. This may involve installing or upgrading heating, ventilation, and air conditioning (HVAC) systems, ensuring plumbing and electrical services are in place, and adding fire protection measures, such as sprinklers and smoke detectors.

Security and Access Control
Basic security measures, such as CCTV systems and access control, may also be included in a shell and core fit-out, although this is not always the case.

Category A Office Fit-Out

A Category A office fit-out provides a more finished space compared to shell and core. It includes the installation of essential features, such as suspended ceilings, raised floors, basic mechanical and electrical services, and internal surfaces.

Category A office fit-outs, often referred to as "landlord's fit-outs," offer a neutral space, allowing the tenant to customise it further to suit their styling and functional requirements. Cat. A fit-outs are particularly appealing to landlords looking to lease commercial spaces, as they generally offer a neutral, open-plan environment that can attract a wide range of potential tenants.

Components & Features of Cat. A Fit-Outs

On top of a shell and core fit-out, Cat. A projects typically include:

Raised Floors and Suspended Ceilings
Cat. A fit-outs often feature raised floors, which provide space for running cables, wires, and other necessary services. Suspended ceilings are also common, housing lighting systems and potentially improving the overall acoustic performance of the space.

Internal Surface Finishes
Category A fit-outs include basic surface finishes on walls, floors, and ceilings. This usually means a neutral colour scheme, with paint, carpets, or tiles that create a clean and professional appearance. However, these finishes are generally minimal, allowing tenants to add their own additional options and personal touches later.

Office partitions used for corridor

New office space

Open-Plan Layout
A key aspect of many Category A office fit-outs is their open-plan layout. This design provides a blank canvas for tenants, giving them the flexibility to create customised workspaces, meeting rooms, and other areas tailored to their specific requirements.

Lighting and Blinds
Cat. A fit-outs typically feature standard lighting systems, such as LED or fluorescent lights, installed within the suspended ceiling. These systems provide adequate illumination for the workspace, but they may not be tailored to specific tasks or areas. Additionally, basic window blinds are often installed to help control natural light and maintain privacy.

Limited Amenities
Category A fit-outs sometimes provide basic amenities, such as a kitchenette, restrooms, and a reception area. However, these facilities are usually minimalistic and may require further customisation, replacement, or enhancement by the tenant to meet their specific needs.

Energy Efficiency and Sustainability
Landlords may opt to incorporate energy-efficient features in Cat. A fit-outs, such as energy-saving lighting systems, well-insulated walls, and windows with low-emissivity glazing. These sustainable features can help reduce energy consumption and costs while potentially attracting environmentally-conscious tenants.

Category B Office Fit-Out

Category B office fit-outs represent the next step in customising a workspace, transforming the open-plan environment provided by a Cat. A fit-out into a fully functional and branded office that reflects the company's identity.

This type of fit-out includes partitioning, custom-designed workspaces, meeting rooms, breakout areas, bespoke lighting, and furniture. In essence, a Cat. B fit-out delivers a ready-to-use office space that reflects the company's branding and culture.

Components & Features of Cat. B Fit-Outs

Cat. B fit-outs cater to the specific needs and preferences of the tenant or end-user, with a strong focus on creating a comfortable and efficient workspace tailored to the company's operations. Building on the features of a Cat. A fit-out, some of the main components of a Cat. B fit-out are:

Partition Walls and Room Layouts
One of the most significant aspects of a Cat. B fit-out is the installation of office partition walls to create a customised layout. This can include designated areas for workstations, meeting rooms, private offices, reception areas, and any other spaces required by the tenant. The layout is typically designed to optimise space usage, facilitate smooth workflows, and accommodate the company's unique operational needs, and includes everything from solid partition walls to glazed office partitions.

Interior Design and Branding
Cat. B fit-outs place a strong emphasis on interior design and branding. This involves selecting colours, materials, and finishes that align with the company's brand identity, as well as incorporating logos, artwork, and other visual elements that help establish a cohesive and recognisable office environment.

New office workstations

Custom Workstations and Furniture
A Cat. B fit-out includes the design and installation of custom workstations tailored to the tenant's specific requirements. This can involve creating ergonomic and efficient workspaces for employees, with carefully selected office furniture, such as desks, chairs, and storage solutions. The choice of furniture can also reflect the company's brand image and contribute to employee comfort and productivity.

Meeting Rooms and Breakout Areas
Cat. B fit-outs often feature the creation of meeting rooms, conference spaces, and informal breakout areas for employees. These spaces can be equipped with audiovisual systems, comfortable seating, and other amenities that facilitate collaboration and relaxation.

Kitchen and Dining Facilities
A Cat. B fit-out typically includes the installation of a fully-equipped office kitchen and dining area for employees, often featuring appliances, cabinetry, and seating arrangements. These spaces can be designed to encourage social interaction and foster a sense of community within the workplace.

Specialised Areas and Equipment
Depending on the nature of the tenant's business, a Cat. B fit-out may involve the creation of specialised areas, such as laboratories, server rooms, or production facilities. These spaces often require specific technical installations, equipment, and safety measures to meet industry standards and regulations.

Technology Integration
Cat. B fit-outs usually include the integration of advanced technology systems, such as high-speed internet, telecommunications, audiovisual equipment, and access control systems. This ensures seamless communication and collaboration within the office, as well as providing a secure working environment.

Lighting and Acoustic Solutions
A Cat. B fit-out can involve the customisation of lighting and acoustic solutions to create a comfortable and productive workspace. This may include task-specific lighting, ambient lighting, and soundproofing or acoustic treatments to minimise noise disruptions and enhance privacy.

Tailored Storage Systems
Category B offices usually include office storage systems that are tailored to the specific needs of an organisation. This can include office shelving, filing systems and even mobile shelving for organisations that need to store larger quantities of files, boxes or other objects in a space efficient way.

Signage and Wayfinding
In a Cat. B fit-out, signage and wayfinding solutions are often implemented to help employees and visitors navigate the office space efficiently. This can include branded signage, directional signs, and room identification plaques, which contribute to a professional and organised workspace.

Environmental & Sustainability Considerations
Companies may choose to incorporate environmentally friendly features and sustainable materials in their Cat. B fit-out, such as energy-efficient lighting systems, low VOC paints, and recycled or sustainably sourced materials. These measures can help reduce the company's environmental impact and align with corporate social responsibility goals.

Project Management & Coordination
A successful Cat. B fit-out requires careful project management and coordination between various stakeholders, including architects, interior designers, contractors, and suppliers. An experienced office fit-out partner can help oversee the process, ensuring that the project is completed on time, within budget, and to the highest quality standards.

New office space

Category A+ Office Fit-Out

A Category A+ office fit-out is a relatively new concept in the industry, offering a hybrid solution between Cat. A and Cat. B fit-outs. This option provides a semi-furnished office space, often featuring pre-installed workstations, reception areas, and basic amenities.

Cat. A+ fit-outs allow for greater flexibility, as they can be easily adapted to meet the specific requirements of incoming tenants with minimal changes.

In general, Cat. A+ offices aren’t quite as customised as you’d find in a Cat. B fit-out. However, they can be a good option for providing a more generic and usable office space that many businesses will be able to move into and start using quickly.

Choosing The Right Office Fit-Out For Your Business

For some businesses, a fully finished office space that’s ready to use straight away is exactly what they’re looking for. Others may value a space with the flexibility to tailor it to their own specification.

Whatever the needs of your business are, here are some of the main factors to take in consideration when determining which type of office fit-out project best meets your requirements:

Budget & Costs

Assess your financial resources and understand the cost implications of each fit-out type. Shell and core or Cat. A fit-outs may be more cost-effective upfront but require additional investment in customisation, whereas Cat. B or Cat. A+ options may have higher initial costs but save time and effort.

If you’re looking for an accurate total cost for your office space, a Cat. B premises might be easier to budget for. Cat. A or shell and core projects will likely require a range of additional items or services that you may need to budget for separately.

Timeframe

Consider the time it takes to move into a new office space. If you need a quick turnaround, a Cat. B or Cat. A+ fit-out might be more suitable, as they require less time for customisation and will be more or less ready to use immediately.

On the other hand, if you don’t need the space straight away, a shell and core or Cat. A fit-out could be a good place to start. These spaces will enable you to take your time with the project to get the specific finish you want as you work with your landlord or third party providers to bring the space up to Cat. B standard.

Customisation

Determine the level of personalisation your business needs. If you require a highly customised space, a Cat. B fit-out may be ideal. However, if you need a more flexible and adaptable space, consider opting for a Cat. A or Cat. A+ fit-out.

All types of fit-outs can be customised to meet your needs, with the main difference being the stage at which each is in the process. A Cat. B project will usually include everything you need such as lighting, furniture, kitchen and break areas and IT infrastructure, and you’ll normally be able to specify all of these aspects to get the space exactly as you need.

A Cat. A fit-out on the other hand will not be quite as finished. This is ideal if you want to adapt the office yourself, or take on the completion of the finishing touches as a second phase to your refurbishment project. It’s also a good option for landlords, as the space can then be completed to Cat. B specification according to the requirements of a new tenant as part of the leasing process.

Glazed office partitions & wooden doors

Refurbished office desk area

Business Growth & Adaptability

Think about your company's future growth and whether the chosen fit-out type allows for easy modifications or expansions. Cat. A and Cat. A+ fit-outs generally offer more flexibility in this regard, while Cat. B fit-outs may require more significant renovations to accommodate changes.

When it comes to adapting or making more significant changes to an office space, there’s usually a trade-off between the level of customisation used and the ease of which the space can be adapted in future. However, a lot of modern partitioning systems can actually be relocated fairly easily and so the need to adapt the space in future is something that should be accounted for at the planning stage.

Branding & Company Culture

Evaluate how important it is for your office space to reflect your brand identity and company culture. A Cat. B fit-out allows for complete customisation, ensuring your office space aligns with your branding, whereas Cat. A and Cat. A+ options might need additional work to achieve the same effect.

If you’re a business planning to move into a finished space, and want your office to be a reflection of the goals and personality of your brand, then a Cat. B fit-out will provide everything you need to start using the office from day one.

For new or smaller businesses looking to grow, this may not be entirely necessary and a Cat. A+ fit-out may be preferable, which will provide a functional space with options for additional customisation as the company scales.

Expertise

Consider partnering with an experienced office refit partner who can help guide you through the process, assess your requirements, and deliver a solution that meets your needs.

Professional office fit-out specialists can save you time and resources, while ensuring your new office space is efficient, productive, and visually appealing.

Whether you need to refurbish an old building from shell and core level onwards, are involved in a completely new-build project, or are a business who needs a partner to finish your space to Cat. B specification, working with a partner like Avanta - whose team brings significant experience and expertise to the table - can help you ensure the project is completed on time, on spec. and on budget.

Assess Your Requirements Before Starting An Office Refit Project

Understanding the differences between Cat. A and Cat. B office fit-outs, as well as other fit-out options, is crucial to making an informed decision for your business. Take the time to assess your specific needs, budget, and growth projections to ensure the chosen fit-out type aligns with your business's goals.

With the right fit-out and professional guidance, your new office space can become a valuable asset that supports your company's success for years to come. By carefully considering your options and working with a knowledgeable office fit-out partner, you can create a workspace that not only meets your current requirements but also adapts to future changes and supports the ongoing growth of your business.

Remember, a well-planned office space can significantly contribute to increased productivity, employee well-being, and a positive company culture, so take the time to invest in an office fit-out that truly meets your needs.

If you’re planning an office fit-out project, whatever the size of your business or the level of fit and finish you need, contact Avanta to find out how we can help you.

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