A London office fit out transforms an empty or outdated commercial space into a fully functional workplace. It covers everything from partitions and flooring to electrics, furniture, and technology. Businesses across London use office fit outs to improve productivity, reflect their brand, and meet the space needs of hybrid teams. This guide breaks down cost, process, timelines, and what to check before hiring a contractor.
What Is a London Office Fit Out?
An office fit out is the process of designing and building the interior of a commercial space so it is ready for use. This includes flooring, ceilings, partitions, lighting, electrical wiring, HVAC, and furniture installation. Most London businesses commission a fit out when they move into a new lease, expand into a larger floor, or refresh an existing space.
Office fit outs differ from general construction because they focus only on the interior of an already-built shell. Landlords in central London typically hand over a space as a “shell and core,” meaning tenants must fit out the interior themselves. This is common across office buildings in areas such as the City of London, Canary Wharf, and the West End.
A fit out project usually includes:
- Partition walls and meeting rooms
- Raised access flooring and ceiling tiles
- Electrical and data cabling
- Air conditioning and ventilation
- Kitchen and breakout areas
- Furniture and joinery
Office refurbishment London projects often overlap with fit outs, since refurbishing an existing office also involves updating layout, finishes, and systems rather than starting from a bare shell.
How Much Does an Office Fit Out Cost in London?
Office fit out costs in London typically range between £60 and £150 per square foot for a standard commercial fit out. Premium finishes, bespoke joinery, or advanced technology integration can push costs above £200 per square foot. A basic Cat A fit out costs less than a full Cat B fit out because it involves fewer finishing details.
Cost depends on several separate factors:
- Size of the space in square feet
- Quality of materials and finishes
- Amount of electrical and mechanical work required
- Furniture specification
- Building location and access restrictions
- Timeline and project complexity
A 5,000 sq ft office in central London with a mid-range specification often costs between £300,000 and £500,000 for a complete fit out. Landlord dilapidation requirements and building management rules in London can also add to the total budget, since many commercial leases require tenants to restore the space to its original condition at the end of the lease term.
What Is the Difference Between Cat A and Cat B Fit Out?
Cat A fit out delivers a basic, ready-to-use shell with flooring, lighting, and ceilings already installed. Cat B fit out adds the finishing layer, including partitions, furniture, branding, and bespoke design elements suited to a specific company.
| Feature | Cat A Fit Out | Cat B Fit Out |
| Flooring | Installed | Finished to brand spec |
| Ceilings | Installed | Customised where needed |
| Partitions | Not included | Included |
| Furniture | Not included | Included |
| Branding | Not included | Included |
| Typical use | Landlord delivers to tenant | Tenant customises for use |
Landlords in London commonly deliver office space at Cat A standard. The tenant then commissions a Cat B fit out to make the space usable for daily operations, including meeting rooms, desks, and breakout zones.
How Long Does an Office Refurbishment in London Take?
A standard office refurbishment in London takes between 6 and 14 weeks, depending on the size of the space and scope of work. Smaller offices under 3,000 sq ft with minimal structural changes can be completed closer to the 6-week mark. Larger floors above 10,000 sq ft, or projects involving mechanical and electrical upgrades, typically take 12 weeks or longer.
Timelines are affected by:
- Size of the office
- Complexity of electrical and HVAC work
- Availability of materials
- Building access hours and permit approvals
- Landlord sign-off requirements
Buildings in the City of London and Canary Wharf often have strict access hours for deliveries and noisy work, which can extend the schedule compared with buildings that allow flexible working hours.
What Does the Office Fit Out Process Involve?
The office fit out process follows a structured sequence from design through to handover. Each stage builds on the previous one to keep the project on schedule and within budget.
- Initial consultation and space survey
- Concept design and layout planning
- Cost estimation and budget approval
- Detailed design and material selection
- Building control and landlord approvals
- Construction and installation
- Furniture fit-out and final finishes
- Snagging, inspection, and handover
Most commercial fit out London providers assign a single project manager to oversee all eight stages. This keeps communication centralised and reduces delays caused by miscoordination between trades such as electricians, flooring contractors, and furniture suppliers.
What Should You Look for in a Commercial Fit Out Company in London?
A reliable commercial fit out company should hold relevant certifications, show a clear portfolio of completed London projects, and offer a fixed project timeline in writing. Checking these details before signing a contract reduces the risk of budget overruns and delays.
Key things to verify:
- CHAS or SafeContractor accreditation for site safety
- Public liability insurance coverage
- Past projects in similar-sized London offices
- Clear breakdown of costs before work begins
- A single point of contact for project management
- References from previous commercial clients
Companies registered with industry bodies such as the British Council for Offices (BCO) generally follow established standards for workplace design and safety. Asking for a detailed quote broken down by trade, rather than a single lump sum, makes it easier to compare providers accurately.
What Trends Are Shaping Office Renovation in London in 2026?
Flexible layouts, sustainability, and hybrid-work design are the main trends shaping office renovation in London in 2026. Businesses are prioritising spaces that support both in-office collaboration and remote work patterns.
Common trends include:
- Fewer fixed desks and more shared workstations
- Increased use of acoustic pods for calls and focused work
- Sustainable materials, including recycled flooring and low-VOC paints
- Smart building technology for lighting and temperature control
- Wellness features such as biophilic design and improved natural light
Energy performance requirements are also influencing fit out decisions, since commercial buildings in London are subject to Minimum Energy Efficiency Standards (MEES) regulations that affect lease renewals and refurbishment planning.
Planning a fit out for your London office starts with a clear survey of your space and goals. Book a consultation with Decoration Touch to get a detailed quote for your office fit out or refurbishment project.
Frequently Asked Questions
What is included in a London office fit out quote?
A standard quote includes labor, materials, project management, and a breakdown of costs by trade such as electrical, flooring, and furniture.
Do I need planning permission for an office fit out in London?
Most internal fit outs do not require planning permission, though building control approval is often needed for structural or fire safety changes.
Can an office fit out be done while staff continue working?
Small refurbishments can sometimes be phased around working staff, though most fit outs are completed faster when the space is vacant during construction.
What is the difference between an office fit out and an office refurbishment?
A fit out typically applies to a new or empty space, while a refurbishment updates an existing office that is already in use.