Cat A Fit Out in London

Tags: Advice Mortgages Market UK
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By CityRealtor 21/08/2025

If you’re considering leasing or purchasing commercial property, understanding what a Cat A fit out involves is essential. The term is commonly used in the UK property market, particularly in offices, and knowing what it includes helps you plan your workspace effectively. At City Realtor, we provide clear information about Cat A fit outs so you can make informed decisions whether you’re a tenant or an investor.

What Is a Cat A Fit Out?

A Cat A fit out refers to the basic interior finish of a commercial space, typically offices, after the landlord has completed essential work but before the tenant’s customisation begins.

  • Installation of suspended ceilings with lighting and air conditioning
  • Raised access floors for cabling and wiring
  • Basic electrical wiring and power outlets
  • Internal walls left as bare or with basic partitions
  • Finished walls with plaster and paint but no decorative elements

This fit out provides a clean, functional canvas ready for a tenant to personalise.

Cat A Fit Out Office
Cat A vs Cat B Fit Out Comparison

Cat A Fit Out vs Cat B Fit Out

  • Cat A is the landlord’s responsibility, preparing the space with essential services
  • Cat B fit out is tenant-specific and includes customised layouts, furniture and branding
  • Cat A creates a blank, ready-to-fit space, while Cat B transforms it into a working environment
  • Cat B typically involves partitioning, flooring, lighting upgrades and IT infrastructure
  • Knowing these categories helps set expectations during lease negotiations

Why Is a Cat A Fit Out Important?

  • Ready access to electrical and HVAC systems
  • A compliant and functional environment for further fit out work
  • Faster tenant move-in times as essential infrastructure is in place
  • Clear definition of landlord vs tenant responsibilities
  • Enhanced property appeal for potential tenants or buyers

This makes a Cat A fit out a key consideration in commercial property deals.

Importance of Cat A Fit Out
Leasing Cat A Fit Out

What to Expect When Leasing a Cat A Fit Out Space

  • Condition and specifications of ceilings, floors and walls
  • Installed lighting types and control systems
  • Availability and capacity of HVAC and electrical systems
  • Compliance with building regulations and fire safety
  • Options for tenant improvements and timing of fit out work

Clear communication with landlords and agents helps avoid surprises.

Planning Your Fit Out After a Cat A Fit Out

  • Your business branding and design requirements
  • Layout planning for workstations, meeting rooms and breakout areas
  • IT and telecommunication infrastructure needs
  • Furniture selection and installation timelines
  • Budgeting and project management for the fit out process

Proper planning ensures a smooth transition from bare space to fully functional office.

Planning Cat B After Cat A

Conclusion

Understanding what a Cat A fit out means can save time and clarify expectations when securing commercial property. City Realtor is here to help you navigate these terms and make confident property decisions.

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