Introduction
Few terms cause more confusion in commercial property than Cat A and Cat B.
Landlords use them in lease documents. Contractors use them in quotations. Tenants often discover what they actually mean only after the lease is signed and the budget is already under pressure.
Understanding the difference early helps you plan the right budget, the right timeline and the right conversation with your landlord.
In This Guide
- Shell and core, Cat A and Cat B at a glance
- What Cat A usually includes
- What Cat B usually includes
- Why scope varies between buildings and free zones
- Approvals and timelines for each stage
- Common mistakes to avoid
- Frequently asked questions
Shell and Core, Cat A and Cat B at a Glance
Shell and core is the space as the developer hands it over: structure, external walls and basic building services, but no finished interior.
Cat A is the base fit-out that makes the space usable. It prepares the floor with the essential services and finishes.
Cat B is the tenant's own fit-out on top of Cat A. It is where the space takes on your brand, your layout and the way your team works.
A simple way to think about it: Cat A makes the space functional, Cat B makes it yours.
What Cat A Usually Includes
Cat A scope is not fully standardised, but it commonly covers:
- ceilings and basic lighting
- floor finishes or a prepared floor
- air conditioning distribution
- fire detection and life safety systems
- basic power and data provision
- washrooms and common service connections
It typically does not include partitions, meeting rooms, custom joinery, branding or furniture.
What Cat B Usually Includes
Cat B is where most of the design and most of the tenant-specific work sits.
- partitions, glazing and meeting rooms
- reception areas and feature elements
- custom joinery and storage
- upgraded lighting design
- IT, data and AV infrastructure
- furniture, branding and signage
- specialist spaces such as server rooms, pantries or client areas
Because Cat B depends on how you work, it varies far more from one office to another than Cat A does.
Why Scope Varies Between Buildings and Free Zones
In Dubai, the same words can mean different things in different buildings.
Some landlords hand over a space with a ceiling, flooring and air conditioning already in place. Others hand over little more than a shell. Free zones and business districts may also have their own fit-out rules, approved contractor lists and design guidelines.
Always ask your landlord or building management for a written scope of what is already provided before you plan your budget.
Approvals and Timelines
Fit-out work generally needs approval before it starts, and the process depends on the building, the community or the free zone. Design drawings, landlord sign-off and authority submissions often come before anything is built.
Cat B work is usually larger and more varied than Cat A, so it tends to need more design coordination and more time. Confirm requirements early, because approval timing is one of the most common causes of delay.
Common Mistakes to Avoid
Assuming Cat A includes partitions
Many tenants expect meeting rooms or finished areas that are only part of Cat B.
Paying twice for the same work
Without a clear scope, work provided by the landlord can be repeated in a contractor's quotation.
Ignoring landlord requirements
Design guidelines, working hours, approved suppliers and reinstatement obligations can all affect cost and programme.
Choosing separate teams with no coordination
When design, approvals and construction are handled separately, gaps appear between them.
Which Stage Do You Need?
- If the space is shell and core, you will need both Cat A and Cat B.
- If the landlord delivers Cat A, your focus is Cat B.
- If the space already has a previous tenant's fit-out, you may be working with Cat B finishes that need adapting or reinstating.
A short site assessment before you sign a lease can save weeks later.
Frequently Asked Questions
Do I need both Cat A and Cat B?
Only if the space is delivered as shell and core. If the landlord provides Cat A, you generally need Cat B only.
Who is responsible for Cat A?
It depends on the lease and the building. Confirm in writing before you budget.
Can one contractor do both?
Yes. Using one team for both stages often improves coordination and reduces gaps between design, approvals and construction.
Which stage takes longer?
Cat B is usually longer because it is more customised, though the exact timeline depends on size and complexity.
Plan Your Fit-Out with Clarity
The right fit-out starts with understanding what you are actually paying for and what you are responsible for.
Swissly delivers interior fit-out in Dubai from first assessment to final handover, with one accountable team throughout.
📞 Call: 04 352 5586
🌐 www.swissly.ae/fit-out
