Cat A vs Cat B Fit-Out in Dubai: What’s the Difference and Which Do You Need?

Category A fit-out gets a space to a basic, functional standard, ready for a tenant to design and build their own layout on top of. Category B takes it the rest of the way to a fully finished, move-in ready space. In practice, Cat A is usually delivered by the landlord as part of a lease agreement, and Cat B is delivered by the tenant, or a contractor working for the tenant, to fit the space to their actual business. Confusing the two, or assuming one automatically includes the other, is one of the more common ways commercial fit-out projects in Dubai get their budget and timeline wrong from the start.

What Category A fit-out includes

Category A is the baseline a landlord typically delivers before handing a unit over to a tenant. It’s meant to be neutral and reusable across different tenants, not customized to any one business. A standard Cat A scope usually covers:

• Raised access flooring or a level, finished floor slab
• Suspended ceiling with basic lighting installed
• Mechanical and electrical services distributed to the space, but not connected to specific rooms or workstations
• Basic HVAC installed and functioning
• Painted or plastered walls, ready for a tenant’s finishes
• Fire and life safety systems compliant with base building requirements
• Toilets and core areas finished, but no internal partitions or layout beyond the building core

What Category A does not include is any sense of how the space will actually be used: no internal walls dividing rooms, no meeting rooms or private offices, no branded finishes, no kitchen or pantry fit-out beyond the building core, and no furniture.

What Category B fit-out includes

Category B is everything that turns a Cat A shell into a working, occupied space specific to one business. It builds directly on top of what Cat A delivered, and typically covers:

• Internal partitions and room layout, private offices, meeting rooms, and open workspace
• Final floor finishes, carpet tiles, vinyl, or specified flooring over the Cat A base
• Feature ceilings, additional or branded lighting design
• Final MEP connections to individual rooms and workstations, not just the base distribution
• Joinery, reception desks, branded elements, and built-in furniture
• Kitchen or pantry fit-out, IT and data cabling, and AV installation
• Loose furniture, in many but not all scopes, depending on what’s agreed

This is the phase where a space actually becomes recognizable as a specific company’s office, rather than a generic finished shell.

Cat A vs Cat B: side-by-side comparison

Aspect	Category A	Category B
Starting point	Shell and core	Completed Category A space
Typical scope	Base flooring, ceiling, MEP distribution, HVAC, core finishes	Partitions, final finishes, joinery, branded design, final MEP
Who usually delivers it	Landlord or developer	Tenant, via their own fit-out contractor
Who usually pays	Included in the lease or building cost	Tenant’s fit-out budget
Result	Neutral, reusable space for any future tenant	Business-specific, move-in ready space

Who’s responsible for Cat A vs Cat B

In most Dubai commercial leases, the split is fairly consistent: the landlord delivers the building up to Category A as part of the lease, and the tenant is responsible for Category B, either as an in-house project or handled through their own fit-out contractor. But the exact line moves from building to building. Some landlords deliver a stronger “Cat A+” or “warm shell” that includes more than the baseline described above, while others deliver a leaner shell and expect the tenant to cover more ground during Cat B. This is exactly why reviewing the landlord’s Cat A specification before finalizing a lease matters just as much as reviewing the lease terms themselves, since it directly sets your Cat B budget.

Shell and core, Cat A, and Cat B: how the three relate

These three terms describe a sequence, not interchangeable options. Shell and core is the raw structural building with no interior finishes at all, the output of the construction phase. Category A is the first layer of fit-out on top of that shell, delivered to a neutral, functional standard. Category B is the final layer, delivered on top of Cat A, that makes the space specific to one tenant’s business. A unit can be leased at any of these three stages, and knowing exactly which one you’re being handed changes what your fit-out scope, budget, and timeline actually need to cover.

How to decide which category your project needs

For most commercial tenants in Dubai, the decision isn’t really “Cat A or Cat B”, it’s confirming what the landlord is delivering and scoping your own Cat B fit-out around it. A few situations to watch for:

• Leasing a unit already delivered to Cat A: your project is a Category B fit-out. Confirm the landlord’s exact Cat A specification first, since it defines what your Cat B scope starts from.
• Leasing a shell and core unit: you may need to deliver both Category A and Category B yourself, or negotiate with the landlord to bring the unit to Cat A before your lease starts.
• Subleasing or taking over a space with an existing Cat B fit-out: your scope may be a fit-out refresh or reconfiguration rather than a full Cat B project, which can meaningfully reduce cost and timeline.

Common mistakes at the Cat A to Cat B handover

A handful of issues come up repeatedly at the point where a landlord’s Cat A handover meets a tenant’s Cat B project:

• Not inspecting the Cat A handover before starting Cat B. Defects or gaps in the base building work are far cheaper to raise with the landlord before your contractor builds on top of them.
• Assuming Cat A includes more than it does. Expecting partitions, final flooring, or branded elements to already be in place is a common and costly assumption to get wrong.
• Designing Cat B before confirming the exact Cat A specification. MEP distribution points, ceiling grid, and floor levels from Cat A directly constrain what your Cat B design can do.
• Missing the building’s fit-out approval process. Cat B work inside an occupied or managed building typically needs its own NOC and sign-off from building management, separate from any authority permit.

How GroundUp approaches Cat A and Cat B fit-outs

We work on Category B fit-outs across Dubai’s commercial buildings, and the first step on every one is reviewing exactly what the landlord’s Category A delivery includes, before a single design decision is made. That avoids the two most common surprises on these projects: designing against an assumed base that doesn’t match reality, and discovering building-specific approval requirements after work has already started. You can see completed office fit-out projects across Dubai, or look at the full range of what we handle on our construction and fit-out services page.

Frequently asked questions