What is an office fit out?

It is the start to finish process of making an internal space be acceptable for occupation.


Shell and Core

This is how a developer would handover a building. From the outside the building would appear to be complete, but the inside would be just the structure, with just concrete walls and floors.

What is usually included:

Concrete and metal frame

Loading Bay

Lift Shaft


Office Fit Out - Shell - Core
Office Fit Out - CAT A

Cat A fit out

Cat A fit out includes the installation of the mechanical and electrical services. This is the stage a landlord can lease, as it is easier to sell to an occupant who wants to create their own unique space.

What is usually included:

Raised Flooring

Suspended Ceilings

Lighting and base small power

Air Conditioning

Fire Detection System


Cat B fit-out

Cat B comes after a Cat A fit out, focusing on the interior design which is why it is normally left to the tenant to install. As it is tailored to the individual needs of the business.

These fit outs incorporate the things that make a space functional, whether that be meeting rooms, break rooms or workstations.

What is usually included:

Kitchen area

Floor finishes


Partitions and doors, including breakout spaces

Small power to desks

IT installation

Brand detailing and décor

Office Fit Out - CAT B

If you require assistance with an office refurbishment or new build, QuinnRoss Consultants can support you. With over 20 years of experience, we have the expert knowledge to facilitate. Please get in touch via our Contact Page and we’ll be more than happy to help with any enquiries you have.