Cat A vs Cat A+: Which Office Fit-Out is Right for Your Business?

With Andy Sives, Director

February 2026

The way organisations think about office space has changed dramatically over the past decade. Hybrid working, shorter leases and evolving employee expectations mean businesses are rethinking not only where they work, but how quickly they can move and adapt.

Two terms often appear during office searches: Cat A and Cat A+. While they sound similar, they represent very different approaches to workspace design, sustainability, cost and flexibility.

For organisations looking to create workplaces that support both people and planet, understanding the difference is essential.

Below, we explore what Cat A and Cat A+ offices are, how they differ and how each can support modern workplace strategies built around human-centric design and sustainability.

What Is a Cat A Office?

A Cat A office is essentially a blank but functional workspace provided by the landlord. It includes the fundamental building services needed to make the space usable, but leaves the interior design and layout decisions to the incoming tenant.

Typical Cat A features include:

• Suspended ceilings
• Raised access floors (in modern buildings)
• Basic lighting
• Mechanical and electrical services
• Sometimes flooring, such as carpet tiles

The result is a clean, empty shell that is technically ready for fit-out but not ready for occupation.

Tenants moving into Cat A space must still design and build their own workplace. That typically means appointing a design team, planning the layout, submitting statutory approvals where required, securing landlord consent and overseeing construction before moving in.

This approach offers maximum control, but it also requires more time, investment and planning.

What Is Cat A+?

Cat A+ offices, sometimes called ‘plug and play’ spaces, are a more recent development that has gained popularity over the last decade.

Unlike Cat A, Cat A+ spaces are fully fitted and furnished by the landlord. They include everything needed to begin working immediately.

Typical Cat A+ features include:

• Workstations and loose furniture
• Meeting rooms
• Breakout spaces
• Storage such as lockers
• Technology and Wi-Fi
• Sometimes AV equipment

In simple terms, tenants can walk in with their laptops and start working straight away.

This model is often compared to renting a furnished apartment instead of an unfurnished one. The environment is already designed and operational, reducing the need for upfront investment or lengthy preparation.

Time to Occupation: Speed vs Customisation

One of the most significant differences between Cat A and Cat A+ spaces is speed to occupation.

Cat A: Longer lead time

Moving into a Cat A space involves several stages:

1. Appointing designers and consultants
2. Developing a workplace strategy and design
3. Securing approvals from the landlord
4. Applying for statutory approvals, where necessary
5. Construction and installation

This process can take several months before employees move in.

However, the benefit is that organisations can create a fully bespoke workplace aligned with their culture, brand and future growth plans.

Cat A+: Immediate occupation

Cat A+ offices dramatically reduce this timeline.

Because the workspace is already designed and furnished, businesses can occupy the space almost immediately. The only additions required are personal equipment and company assets.

For organisations that need a fast and low-risk entry into a location, this can be extremely attractive.

Cost Considerations

Cost structures between the two models differ significantly.

Cat A: Higher upfront investment

With Cat A spaces:

• The landlord provides the base building fit-out
• The tenant pays for design, approvals and construction
• Furniture and workplace technology must also be purchased

This means significant upfront capital expenditure (capex).

In many cases, tenants may receive a rent-free period during the fit-out stage to offset these costs.

Cat A+: Higher rent but lower initial spend

Cat A+ spaces typically come with a rental premium, reflecting the fact that furniture, fittings and design have already been provided.

However, tenants benefit from:

• Minimal upfront cost
• No furniture procurement
• Predictable budgeting

This shifts the financial model from capital expenditure to operational expenditure, which many businesses prefer.

Who Is Cat A Best For?

Cat A offices tend to suit larger organisations with strong brands, or businesses with long-term plans.

These companies often want a space which reflects their brand identity across multiple locations.

Cat A spaces work particularly well for organisations that:

• Plan to occupy the space for many years
• Have predictable growth
• Require a tailored workplace experience
• Need flexibility to evolve their workspace over time

Because the layout is designed specifically for the organisation, Cat A allows businesses to fully embed their culture, workflows and collaboration patterns into the workplace.

Who Is Cat A+ Best For?

Cat A+ spaces are particularly well suited to:

• Startups
• SMEs
• Satellite teams
• Businesses testing a new location

These organisations often prioritise speed, flexibility and lower upfront costs.

In markets such as Scotland, Cat A+ spaces commonly range from 1,000 to 5,000 square feet, making them ideal for smaller teams.

They also allow businesses to scale gradually. As teams grow, organisations can move into larger suites within the same building, whilst maintaining the same address.

Sustainability: A Key Consideration

From a sustainability perspective, both Cat A and Cat A+ present opportunities and challenges.

The waste challenge of traditional Cat A

Traditional Cat A fit-outs can generate significant waste.

At the end of a lease, tenants are often required to return the space to its original condition. This can involve removing custom features and reinstalling original ceilings or finishes.

The result can be materials being installed, removed and reinstalled multiple times, which is environmentally unsustainable.

However, a growing trend toward ‘shell and core’, or ‘shell and floor’ spaces — essentially stripped-back concrete shells — can be more sustainable by reducing unnecessary finishes.

Cat A+: Longer lifecycle design

Cat A+ spaces can be more sustainable, when designed properly, because they are less frequently stripped out and rebuilt.

Instead, they are usually lightly refreshed between tenants, extending the lifespan of materials and furniture.

Designing these spaces with durable finishes, adaptable furniture and modular layouts helps reduce long-term environmental impact.

Designing for Modern Work

Regardless of fit-out category, today’s workplaces must respond to new ways of working.

Hybrid working means offices are no longer just rows of desks. Employees come to the office primarily for collaboration, social connection and shared experiences.

Modern workspaces therefore require:

• Collaboration areas
• Quiet focus zones
• Informal social spaces
• High-quality acoustics
• Flexible furniture

Acoustics have become particularly important. Many contemporary offices feature exposed ceilings and industrial aesthetics, which can create noise challenges without careful acoustic planning.

Furniture has also evolved to support privacy and flexibility, with products such as booths, modular seating and movable partitions allowing workplaces to adapt quickly.

The Rise of Amenity-Rich Buildings

Another major shift is the increasing importance of shared amenities within office buildings.

Tenants now expect facilities such as:

• Showers and changing areas
• Secure cycle storage
• Shared cafés or work cafés
• Flexible breakout areas

Rather than each tenant building these facilities into their own floorplate, many organisations now prefer landlords to provide them centrally.

This approach improves space efficiency and creates more opportunities for community and collaboration across tenants.

Choosing the Right Option

Ultimately, choosing between Cat A and Cat A+ comes down to a few key questions:

How quickly do you need to move in?
If speed is critical, Cat A+ offers immediate occupation.

How important is bespoke design?
If workplace culture and brand experience are priorities, Cat A offers greater control.

What level of flexibility do you need?
Shorter leases and adaptable furniture often make Cat A+ more flexible for growing businesses.

What is your long-term workplace strategy?
Organisations with clear long-term plans often benefit from the customisation of Cat A.

The Future of Office Fit-Out

As the workplace continues to evolve, the distinction between Cat A and Cat A+ is becoming less rigid.

Some landlords are now offering hybrid approaches, sometimes called ‘enhanced Cat A’ or ‘partial Cat A+’, where key elements, such as tea points or collaborative areas, are pre-installed.

These models combine speed, flexibility and sustainability, while still allowing tenants to personalise their space.

What’s clear is that office design is no longer simply about fitting as many desks as possible into a floorplate. The focus has shifted toward creating environments that people genuinely want to spend time in.

Spaces that support collaboration, wellbeing and community are now central to attracting people back to the office.

And whether Cat A or Cat A+, the most successful workplaces will always be those designed with people, purpose and sustainability at their core.