Cost of an Office Fit Out 2026: Your Complete UK Budget Guide

When you start thinking about a new office fit-out, the first question on your mind is always the same: “How much is this going to cost?”

The truth is, the average cost of an office fit out in the UK can swing from as little as £40 per square foot for a simple refresh, all the way up to £200+ per square foot for a completely bespoke, high-end design. This range is your starting point. It’s the first step in budgeting for a workspace that will genuinely boost your team’s productivity and reflect what your brand is all about.

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Your Guide to UK Office Fit Out Costs

Planning a new office or refurbishing your current one is a massive investment in your company’s future. It goes much deeper than just picking out desks and chairs; you are creating the very environment where your team will innovate, collaborate, and thrive.

But before you get lost in mood boards and design concepts, let’s talk numbers.

Trying to understand the cost of an office fit out can feel a bit like navigating a maze but it doesn’t have to be. The final figure really boils down to your ambition, your location, and the specific needs of your business. Whether you’re a startup in Cambridge or an established firm in London, getting a firm grip on the key cost drivers is essential for making smart financial decisions.

Navigating Your Budget with Confidence

We’ve put this guide together to give you a clear, no-nonsense overview of what to expect. We are going to break down the costs into manageable chunks, showing you exactly where your money goes and how to invest it wisely. Think of this as your financial roadmap to a better workspace.

At Gibbsonn Interiors, we believe in total transparency from day one. We partner with businesses across Bishop’s Stortford, Essex, Hertfordshire and London to deliver exceptional workspaces that hit the mark on both budget and ambition. Our complete office fit out services are designed to make the whole process smooth, from the first sketch to the final handover.

Throughout this guide, we’ll dive into:

  • The key factors that really influence the final cost
  • How different UK locations can affect your budget
  • Real-world budget examples for businesses of all sizes
  • Smart strategies to get the most value without cutting corners on quality

By the end, you’ll have the confidence to plan your project effectively. You’ll be ready to create a workspace that not only looks incredible but also delivers a real, tangible return on your investment.

Let’s get started.

Decoding What Drives Your Fit Out Budget

A split image showing exposed mechanical and electrical systems and a complete office interior.

Looking past the simple per-square-foot estimate tells you the real story behind your fit-out budget. Think of it like customising a car. The basic model gets you on the road but the real cost comes from the engine, the tech inside, and the quality of the finish. In an office, your “engine” is the mechanical and electrical systems, while the “finish” is everything from the flooring to the furniture.

Getting to grips with these core components is the key to controlling the cost of an office fit out. Every choice you make, big or small, has a direct knock-on effect on the final figure. Our design-and-build approach at Gibbsonn helps businesses in Chelmsford and Bishop’s Stortford make smarter decisions, ensuring every pound invested adds genuine value.

Cat A Versus Cat B Fit Out

One of the first things to understand is the difference between a Category A (Cat A) and Category B (Cat B) fit out. It’s a fundamental distinction that defines who is responsible for what and has a massive impact on your budget.

A Cat A fit out is essentially the blank canvas your landlord provides. It’s a functional but completely empty shell, which typically includes:

  • Raised access flooring and suspended ceilings
  • Basic mechanical and electrical (M&E) services
  • Finished internal walls and basic fire detection systems
  • Completed common areas like lobbies, toilets, and lifts

The Cat B fit out, on the other hand, is where you get to transform that shell into your unique workspace. This is the stage where your brand identity comes to life. The space is tailored to how your teams actually work and, naturally, where the bulk of your budget will be spent.

A Cat B fit out is your company’s fingerprint on the building. It covers everything that makes an office yours, from meeting rooms and branded reception areas to the kitchen breakout space and specific IT infrastructure.

The Major Cost Drivers in Your Cat B Project

Your Cat B fit out is made up of countless elements but a few key areas have the most significant impact on your budget. Allocating your funds wisely here is absolutely essential for a successful project.

Mechanical & Electrical (M&E) Systems
This is the central nervous system of your office. It covers heating, ventilation, and air conditioning (HVAC), as well as power distribution and plumbing. If you need to upgrade these systems to support a dense layout or power-hungry tech, it can be a major expense.

Lighting and Data Infrastructure
A modern office needs more than just a few lights and plug sockets. We’re talking about sophisticated, energy-efficient LED lighting schemes and the robust, structured cabling required for potentially hundreds of workstations. This element is critical for productivity and often makes up a substantial chunk of the M&E budget.

Finishes and Materials
The materials you choose for floors, walls, and ceilings really set the tone for the entire workspace. Opting for high-end finishes like hardwood flooring or bespoke acoustic panelling will naturally increase the cost of an office fit out compared to standard carpet tiles and a lick of paint.

Bespoke Joinery and Furniture
Custom-built features, like a statement reception desk or fitted storage units, add a premium feel but also come with a premium price tag. In the same way, your choice between standard off-the-shelf workstations and high-end ergonomic furniture from leading manufacturers will significantly influence the final spend.

Technology Integration
Adding advanced audio-visual (AV) equipment into meeting rooms or installing smart office systems adds another layer of cost. For businesses in competitive hubs like London or Cambridge, seamless technology is no longer a luxury, it’s a necessity.

By understanding these core drivers, you can start making informed decisions that balance your vision with your budget. The next step is to see how your geographical location adds another crucial variable to the equation.

How Your Office Location Shapes the Final Bill

Your office’s postcode does a lot more than just dictate the morning commute; it’s a massive factor in your total office fit out cost. It’s no secret that property prices swing wildly across the UK and the same goes for the labour, materials, and logistics needed to bring your new space to life. Getting a handle on this geographical factor is the first step to building a budget that won’t give you any nasty surprises.

A project in the heart of London, for instance, will almost always come with a higher price tag than an identical one in Manchester or Birmingham. This isn’t just a hunch. It’s driven by real-world factors like higher wages for tradespeople, tight delivery schedules, and the sheer headache of getting materials and teams into a congested city centre. If you’re based in or around the capital, this is something you need to account for right from the start. You can read more about our specific approach to working in the capital in our guide to Gibbsonn Interiors in London.

But this regional price difference isn’t just a story of big cities. Sometimes, choosing a strategic spot just outside a major hub can unlock serious savings without cutting you off from key talent pools or transport links.

The North-South Cost Divide

The cost gap between London and other major UK cities is significant and well-documented. Skilled tradespeople in the capital and the South East command higher wages, which filters directly down into your fit out bill. On top of that, simple things we often take for granted, like parking and getting a delivery lorry to the site, become complicated and far more expensive in bustling city centres.

Recent industry data from RIBA really brings this home. The cost per square metre for building work can vary significantly between London and other regions. This shows exactly why savvy businesses need to think about location from day one.

What this data really highlights is that businesses based in key regions just outside the M25, like Bishop’s Stortford, Chelmsford or Milton Keynes, can make their budgets stretch considerably further. A smart decision on your office location can free up vital cash to be invested elsewhere – perhaps in better tech, higher-quality furniture, or a really great employee wellbeing programme.

Smart Location Choices in Essex and Hertfordshire

For a lot of companies, the sweet spot is a location that balances cost with connectivity. This is where areas like Essex and Hertfordshire really shine. By setting up shop in a town like Stansted, Braintree or Bishop’s Stortford, you get fantastic transport links to London and Cambridge without paying the premium fit out costs that come with a central city postcode.

This strategic move comes with a few key advantages:

  • Lower Labour Costs: You get access to a pool of highly skilled local trades at much more competitive rates.
  • Easier Logistics: Simpler site access for deliveries and contractors means fewer delays and lower logistical overheads.
  • More Bang for Your Buck: Your budget simply goes further, allowing for a higher-spec finish or better quality furniture and technology.

Local Insight
Choosing a location just outside a major metropolitan hub, like our service areas in Hertfordshire or Essex, can reduce your fit-out costs by up to 20% without sacrificing connectivity or access to talent.

Ultimately, where you choose to put your office is a major business decision with a direct line to your bottom line. By carefully weighing up the regional cost differences, you can position your business for success, creating a brilliant workspace that works for your team and your budget. It’s about making an informed choice that ensures every pound you spend adds real, tangible value to your new office.

Budgeting for Success and Avoiding Hidden Costs

This is where the spreadsheets and estimates get real. Moving from a rough per-square-foot figure to a proper project budget is the moment theory slams into reality. To give you a clearer picture of the cost of an office fit out, let’s walk through a few practical scenarios. Because a budget isn’t just about the cool furniture or the feature wall; it’s a financial roadmap that has to account for all the costs you don’t see coming.

A successful project is all about anticipating these expenses. At Gibbsonn, our approach is built on total transparency, ensuring our clients from Bishop’s Stortford to London have a complete financial picture right from day one. We’re firm believers in proactive planning to sidestep nasty surprises and deliver genuine value.

Sample Budget Scenarios

To see where the money really goes, let’s break down three typical project types. Think of these percentages as a starting point. They’ll naturally shift based on your own priorities but they offer a solid framework for your budgeting discussions.

1. The Lean Start-up Space (2,000 sq ft)
This is all about creating a smaller, agile workspace focused on getting the job done. The priority here is a clean, modern aesthetic and a collaborative environment, without splashing out on high-end, designer finishes.

  • Construction & M&E (45%): Covers the essentials like basic partitions, standard electrical and data points, and efficient lighting.
  • Furniture & Fittings (30%): Good quality, functional workstations and task chairs are key, with a modest but welcoming breakout area.
  • Finishes (15%): Think durable carpet tiles, freshly painted walls, and standard ceiling finishes.
  • Professional Fees & Contingency (10%): This slice covers design, project management, and a crucial buffer for any unexpected hiccups.

2. The Balanced SME Refurbishment (5,000 sq ft)
This is for an established business ready to upgrade its current space or settle into a new one. It’s a balancing act between stamping your brand identity on the space, prioritising employee wellbeing, and future-proofing the office.

  • Construction & M&E (40%): A bit more complex, this could include glazed partitions, an upgraded HVAC system, and beefed-up data infrastructure.
  • Furniture & Fittings (35%): A smart mix of ergonomic workstations, collaborative furniture, and a well-equipped kitchen and breakout space.
  • Finishes (15%): This is where you might add feature flooring in key zones, acoustic panelling for noise control, and branded elements.
  • Professional Fees & Contingency (10%): For comprehensive design, handling regulatory approvals, and full project oversight.

3. The Premium Corporate HQ (10,000 sq ft)
We’re talking about a high-spec, statement-making project. This budget has room for bespoke features, advanced technology, and premium materials to create a flagship office that wows clients and attracts top talent.

  • Construction & M&E (35%): This could involve advanced M&E systems, smart lighting controls, and extensive custom-built joinery.
  • Furniture & Fittings (30%): High-end designer furniture, fully integrated AV in every meeting room, and extensive wellness facilities.
  • Bespoke Features & Finishes (20%): This is for the showstoppers: a custom reception desk, high-end flooring like stone or hardwood, and unique architectural details.
  • Professional Fees & Contingency (15%): Includes detailed consultancy, fees for specialist contractors, and a larger contingency pot for a project of this scale.

Uncovering the Hidden Costs

Even the most carefully planned budget can get knocked off course by overlooked expenses. These are the costs that lurk in the small print or get forgotten in the excitement of the initial planning phase. Knowing what they are is the first step to keeping your project firmly on track.

A truly accurate budget anticipates everything. Hidden costs are only hidden if you don’t have an experienced partner guiding you through the process, turning potential surprises into planned expenses.

Here are a few of the usual suspects we help our clients plan for:

  • Professional Fees: This isn’t just one cost. It covers your architects, designers, M&E consultants, and project managers. These fees typically make up 5-15% of the total project cost.
  • Building Control & Planning Applications: You need to make sure your new layout complies with all the regulations, which means paying fees for applications and official inspections.
  • Dilapidations: This one catches a lot of people out. If you’re leaving an old office, your lease likely contains a legal obligation to return it to its original state. This can be a significant and completely unexpected cost if not planned for.
  • IT & AV Migration: The cost of moving and setting up your tech infrastructure, or integrating new systems, is often budgeted separately from the main fit out but is absolutely critical.
  • Ongoing Maintenance: Shiny new systems and finishes need looking after. Factoring in these future operational costs from the start is just smart financial planning.

Smart Strategies to Maximise Your Investment

The smartest fit-out is rarely the cheapest one. It’s the one that delivers the greatest long-term value for your business. Shifting your focus from pure cost to return on investment is the secret to creating a high-impact workspace without an inflated budget. It’s all about making strategic decisions that will pay dividends for years to come.

This means looking beyond the initial price tag. Think about how your new space will support employee wellbeing, help you attract top talent, and adapt to whatever the future throws at you. A thoughtfully designed office is a powerful business asset and getting it right means investing in the areas that truly matter.

Prioritising Wellbeing for Long-Term Gain

Putting your team’s health and happiness first is one of the most effective ways to get more from your fit-out budget. A workspace that actively supports wellbeing can lead to a significant drop in absenteeism and a major boost in both productivity and staff retention.

Consider weaving these value-driven elements into your plan:

  • Biophilic Design: Bringing natural elements like plants, daylight, and organic materials into the office is proven to reduce stress and sharpen focus. This doesn’t have to be expensive; even simple additions can make a world of difference.
  • Ergonomic Furniture: High-quality ergonomic chairs and desks might seem like a big initial outlay but they are a non-negotiable investment. Preventing issues like back pain and repetitive strain injury keeps your team healthy, happy, and productive.
  • Acoustic Comfort: A noisy, distracting office is a productivity killer. Investing in smart acoustic solutions, like sound-absorbing panels or strategically placed soft furnishings, creates a calmer, more focused environment for everyone.

Cost-Effective Innovations and Future-Proofing

Maximising your investment also means being clever with your materials and planning for what’s next. Modern techniques and flexible solutions can help you achieve a high-end look while keeping the cost of an office fit out firmly under control. This is where effective office design and space planning becomes absolutely critical.

A future-proof office is one that can change as quickly as your business does. Flexibility is no longer a “nice-to-have”; it’s a core component of a smart investment strategy.

For businesses in dynamic hubs like Cambridge or Stansted, this kind of adaptability is crucial. Here are a couple of smart strategies we often recommend:

Architectural Wrapping
Instead of ripping out and replacing dated but structurally sound surfaces like doors, cabinets, or reception desks, architectural wrapping offers a brilliant alternative. This high-quality vinyl finish can mimic premium materials like wood, metal, or stone at a fraction of the cost, completely revitalising your space with minimal disruption.

Modular Meeting Pods
The way we work is changing and offices need to keep up. Traditional, fixed meeting rooms are expensive to build and offer zero flexibility. Modular meeting pods, like those from manufacturers such as Vetrospace or BlockO, are a far more agile solution. They provide acoustically private spaces that can be installed quickly and, crucially, moved easily as your team’s needs evolve. It’s a forward-thinking approach that ensures your office remains a valuable asset for years to come.

Partnering with Gibbsonn for Your Fit Out


Bringing your vision for a new workspace to life requires more than just a builder; it requires the right partner. The **cost of an office fit out** is a serious investment and making sure it delivers real value means choosing a team that understands your goals from the inside out. You need someone who will manage every detail to protect your budget and timeline.

At Gibbsonn Interiors, our integrated design-and-build process gives you a single point of contact and total accountability. This completely removes the stress of trying to coordinate multiple contractors and ensures a seamless, efficient delivery from the first sketch to the final handover. We take the complexity out of the equation.

The Gibbsonn Difference

Our expertise is creating exceptional workspaces for businesses across London, Essex, and Cambridge. We know these markets intimately and understand the unique challenges and opportunities they present. This local knowledge is crucial, especially when navigating the premium costs that come with working in the capital.

For instance, London’s dominance in global fit-out expenses is clear, with high-spec projects averaging around £434 per square foot. However, you can find significant savings in nearby hubs like Birmingham or Manchester, which makes strategic location planning more important than ever. You can explore the full analysis on how London compares globally to see just how much of an impact geography can have.

This is where our value-driven approach really comes into its own. We help you make informed decisions that align your physical space with your financial goals, whether you’re in a prime London location or a more cost-effective base in Hertfordshire.

Choosing a fit out partner isn’t just about finding a builder. It’s about securing a guide who can navigate the complexities of design, compliance, and budgeting to deliver a workspace that drives your business forward.

If you’re ready to move from planning to action, our team is here to help. We provide transparent, detailed cost estimates and expert guidance to ensure your project is a resounding success.

A Few Common Questions

Even with the best plan in hand, a few questions about the cost of an office fit out always pop up. Let’s tackle the most common queries we hear from our clients across London, Essex, and Hertfordshire, so you can move forward with confidence.

How Long Does a Typical Office Fit Out Take?

There’s no single answer to this one – the timeline really hinges on the size and complexity of your project.

As a rough guide, a straightforward refurbishment for a smaller 2,000 sq ft office might take 4 to 6 weeks once the design gets the green light. On the other hand, a full-scale Cat B fit out for a larger 10,000 sq ft workspace could easily stretch to 12 to 16 weeks.

This is where Gibbsonn’s integrated design and build approach makes a real difference. By keeping every stage under one roof, we keep the project flowing smoothly and the lines of communication wide open for our clients, whether they’re in Stansted or the heart of London.

What’s the Difference Between a Cat A and Cat B Fit Out?

Getting your head around this is key for budgeting properly. The easiest way to think about it is the difference between a blank canvas and a finished painting.

A Category A (Cat A) fit out is what the landlord typically provides. It’s the basic, functional shell of the space, usually including:

  • Raised floors and suspended ceilings
  • Core mechanical and electrical (M&E) services
  • Finished walls and basic fire detection systems

A Category B (Cat B) fit out is where your brand’s personality and operational needs come to life. This is the stage where we transform the empty shell into a place your team can thrive. It covers everything from building individual offices and meeting rooms to installing branded graphics, fitting kitchens, and weaving in specialist IT and AV gear. At Gibbsonn, we specialise in delivering these comprehensive Cat B fit outs that truly reflect who you are as a business.

Are Professional Fees Included in the Per Square Foot Cost?

In most cases, no. Those headline ‘per square foot’ figures you see floating around usually just cover the direct construction and furnishing costs.

Professional fees for things like design, project management, and getting building control approvals are typically budgeted as a separate line item. You can expect these to add another 10-15% on top of the total project cost.

At Gibbsonn, our turnkey approach means we provide a clear, consolidated quote that details every single cost, professional fees included. We believe in total transparency from the start, so there are no nasty surprises down the line.

How Can I Save Money Without Compromising on Quality?

Hitting that sweet spot of a high-quality finish on a tight budget is all about making smart choices, not just cutting corners.

One great strategy is to plan a phased refurbishment, which lets you spread the investment over time. Another clever move is to use innovative solutions like architectural wrapping to give surfaces like doors or reception desks a modern facelift instead of replacing them wholesale. You get a fresh, premium look for a fraction of the cost.

Investing in flexible, modular furniture and meeting pods is another brilliant way to get long-term value. These pieces allow you to easily reconfigure your space as your business evolves. Our team works hand-in-hand with clients in places like Bishop’s Stortford and Cambridge to find these value-driven opportunities, making sure every pound of your investment works as hard as you do.


Ready to transform your workspace? Speak to the Gibbsonn Interiors team today. We’re here to help you map out a fit out that works for your budget and wows your team.

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