Office Fit Out Cost Guide 2026

An office fit out is a considerable investment for any business but an important one to get right in order to achieve the right workspace that supports your operations and team, reflects your company’s vision and brand, increases productivity and allowing your business to thrive.

This guide will help you establish a greater understanding of how much your requirements could cost by sharing key considerations whilst planning your budget and finances in order to achieve your desired workspace.

How Much Does an Office Fit Out Cost?

It can be difficult to provide a definitive answer to the question: How much does an office fit out cost? Every project is unique, with a wide range of factors influencing the final investment. Because of this, a site survey is often the best way to accurately assess your requirements and provide a tailored quotation.

That said, we can provide indicative office fit out costs based on the size of your workspace and the level of specification required, typically categorised as low, medium, or high specification. While these figures are only a guide, they can be a useful starting point when budgeting and planning your office fit out project.

Factors That Can Influence the Cost of an Office Fit Out

Several elements can influence the overall cost of your project, including:

• The size of the office space
• The quality and specification of finishes
• Design complexity
• Project timelines and deadlines
• The current condition of the space
• Location of the project
• The type of fit out required — CAT A, CAT A+, or CAT B
• Inclusion of furniture and workplace solutions
• AV and technology requirements
• Sustainability and materials
• Dilapidation costs of existing office

Every workspace has different requirements, so understanding these factors early can help shape both the design approach and overall budget.

Key Considerations for your Office Fit Out Costs

In all instances a site survey is required in order to be able to provide an accurate cost. During the site survey a clear understanding of the space can be gathered alongside key information in order the produce a clear and accurate quote that is specific to your needs.

However, there are some key points to consider prior to engaging with a contractor that will help when planning your budget. If you are shortlisting a couple of properties then these factors are worth reviewing in order to help you choose the most suitable option for your budget.

• The size of the office fit out – The size of the space will of course impact the cost of your project. When shortlisting potential properties its useful to think about the space you need for your operations but also how you optimise the use of the space. This is where our interior designers can help by creating a space plan that best supports your requirements and workflow. Find out more here.
• The Specification – Ultimately the specification of finishes required dictates heavily the region the costs will fall into. Some companies may want a high spec finish with fixtures and furniture, while others may only require a more basic level of finish.
• The complexity of your fit out – Depending on the complexity of the design the costs will vary. If the scope of works are largely cosmetic such as decoration, flooring and lighting then the costs will be less than larger structural changes where partitions are required to create the overall layout and set up for your operations.
• Project timelines – Your timelines and any key deadlines can influence the overall costs of your fit out. If you are on a tighter timeline that require more out of hours work then this will naturally cause your costs to increase.
• The age of the building – The age of the building will determine further or additional costs that you may incur. For example, older properties can have a tendency to have complications after general wear and tear have taken their toll including structural or damp issues. If it’s a listed building then there may be more regulations and paperwork to address before any fit out works can begin. Newer properties generally need less work done and are already newly fitted out by the landlord so may only require a few cosmetic updates to incorporate your company branding into the space.
• MEP Systems – Depending on the age and condition of the building the mechanical and electrical systems servicing your workspace may need updating or installing. These would include heating, ventilation, power supply for example. Compliance around your ventilation is important and a reputable design and build contractor will be able to help you navigate this.
• Location – London fit out projects can incur a higher premium cost due to labour and logistics such as restrictions and access.