How Much Does an Office Fit-Out Cost in the UK? A 2026 Pricing Guide
If you’ve started planning an office refurbishment, you’ve probably noticed that almost nobody gives you a straight answer on cost. You’ll find plenty of case studies and glossy before-and-after photos. Very few contractors will put a number on the page. That’s understandable, since every project is different. But it isn’t much help when you’re trying to put together a budget for the board or your landlord.
We price this work every week across South Wales, from single-office partition jobs to full commercial fit-outs. That means we can give you a genuinely useful starting point. This guide walks through what drives the cost of an office fit-out up or down. It also covers realistic price ranges for different specification levels, and the costs people forget to budget for until it’s too late.
What Actually Determines the Cost of an Office Fit-Out
No two fit-outs cost the same, because the price is really the sum of several separate decisions. The main factors are:
The starting condition of the space
A shell and core unit with nothing installed will cost more overall than a space that already has partitions, ceilings and services in reasonable condition. The reason is simple: you have to build more from scratch. Refurbishing an existing fit-out can be cheaper per square metre. It can also throw up surprises once walls and ceilings come down, particularly in older buildings.
The scope of work
A straightforward refresh, new partitions and decoration, is a different budget entirely. Compare that to a project that also involves reconfiguring the layout, upgrading suspended ceilings, replacing washrooms, or bringing electrics and fire compartmentation up to current standards. Partitioning and ceiling work often win or lose a fit-out budget. They affect how much of the rest of the space needs to change around them.
Specification level
This is usually the biggest swing factor. Standard partitions with a plain paint finish cost considerably less. Glass partitions with acoustic ratings, bespoke joinery, or feature ceiling designs cost more. Neither approach is wrong, it depends entirely on how the space needs to perform and how it needs to look.
Size and layout complexity
Cost per square metre tends to fall as the total area increases. Fixed costs like site set-up, project management and waste removal spread across more space. A highly cellular layout with lots of partitioned rooms will cost more per square metre than an open-plan space of the same size. There’s simply more partitioning, doors and ceiling detailing to install.
Access and working hours
Work sometimes has to happen outside normal hours, in the evenings or at weekends, to keep a business trading during the project. That has a cost implication. It’s usually worth it for businesses that can’t afford to close. Factor it in from the start rather than discovering it partway through.
Compliance and fire safety requirements
Fire-rated partitions, fire doors and fire-rated ceiling systems cost more than non-rated equivalents. They’re non-negotiable where building regulations or a fire risk assessment require them. This is one area where it never pays to cut corners. A reputable contractor will flag where fire performance applies rather than leave it to chance.
Realistic Price Ranges by Specification Level
These figures are intended as a general planning guide, not a quote. Every site is different. The only way to get an accurate figure is a site visit and a proper survey. As a rough guide, the industry commonly groups UK commercial fit-outs into three broad bands:
Basic refurbishment – decoration, new flooring, straightforward partitions and a tidy-up of what’s already there. This suits businesses that need the space to look fresh and function properly without changing the layout significantly.
Mid-range fit-out – new partitions including some glazed or acoustic sections, new suspended ceilings, upgraded lighting, and a reconfigured layout. This is where most SME office fit-outs in South Wales sit. It’s the level that tends to deliver the best balance of cost and impact.
High-specification fit-out – bespoke glass partitioning, feature ceilings, high-end finishes, new washrooms and significant M&E upgrades. This is typical of head office relocations or spaces that need to make a strong impression on clients and staff.
Within each band, partitions and suspended ceilings usually represent a meaningful share of the total budget. They touch almost every other trade. Electrics, fire compartmentation, acoustics and decoration all connect back to where the walls and ceiling grid go.
Where Partitions and Ceilings Sit in the Budget
It’s worth understanding why partitions and ceilings get so much attention in a fit-out quote. Partitions aren’t just walls, they’re also fire compartmentation, acoustic separation and cable routes in one. Suspended ceilings aren’t just a finish. They conceal services, house lighting, and often carry fire and acoustic performance requirements of their own. Get either wrong, or choose the wrong system for the job, and the cost of correcting it later is far higher. Specifying it properly the first time costs less.
This is also why a genuinely useful quote breaks these elements out separately, rather than folding everything into one lump sum. It lets you see exactly what you’re paying for. You can also see where there’s room to adjust the specification if the budget is tight.
Hidden Costs People Forget to Budget For
- Dilapidations and making good. If you’re leaving a previous space, your lease may require you to return it to its original condition. That’s a cost entirely separate from your new fit-out.
- Building control and compliance sign-off. Fire safety, means of escape and building regulations compliance can involve additional design input. This applies particularly on older buildings or listed premises.
- IT and data cabling. Contractors frequently price this separately from the main fit-out, and it gets forgotten until the last minute.
- Furniture, fixtures and equipment (FF&E). Construction quotes rarely include desks, chairs, storage and breakout furniture. They’re still a real cost of moving into a refurbished space.
- Downtime and decant. Staff may need to relocate temporarily, or productivity may dip during the works. That has a cost even if it never appears on an invoice.
- Contingency. A sensible contingency covers the unexpected issues that turn up once you open existing ceilings and walls. Discuss it with your contractor at quotation stage.
Practical Tips for Getting an Accurate Quote
Get more than one quote, but make sure each contractor is pricing the same scope. Ask for a breakdown by element (partitions, ceilings, electrics, decoration) rather than a single total figure. That way you can compare like for like. Be upfront about your timeline and whether the space needs to stay operational during the works. This materially affects price. Ask what’s excluded as well as what’s included. Pay attention to FF&E, IT infrastructure and making good the space you’re leaving. Finally, ask to see examples of completed projects at a similar specification level to yours. This is the best way to judge whether a quote is realistic.
Frequently Asked Questions
How much does an office fit-out cost per square metre in the UK?
It varies significantly by specification, location and scope. That’s why we’ve grouped guidance into basic, mid-range and high-specification bands above, rather than quoting a single figure. The only reliable way to get an accurate cost is a site visit and a detailed quotation. That quotation should reflect your specific space and requirements.
What’s included in an office fit-out quote?
A proper quote should cover partitions, suspended ceilings, decoration, flooring and electrics. It should also cover any fire safety or compliance work the survey identifies. It’s worth checking whether the quote includes FF&E, IT cabling and dilapidations, or prices them separately. Quotes commonly exclude these.
Is it cheaper to refurbish an existing space or start from a shell and core unit?
Refurbishing existing partitions and ceilings can reduce cost where they’re in reasonable condition. A full shell and core fit-out gives you a clean slate. It avoids inheriting hidden issues behind existing walls and ceilings. Which is more cost-effective depends on the condition of what’s already there.
Do fire-rated partitions and ceilings cost more?
Yes, fire-rated systems typically cost more than standard equivalents, reflecting the additional materials and testing behind them. Where a fire risk assessment or building regulations require fire performance, this isn’t an area to compromise on.
How can I keep my office fit-out on budget?
Get a detailed, itemised quote rather than a single total figure, and agree the specification level upfront. Build in a sensible contingency. Choose a contractor who will flag potential cost implications during the survey stage, not after work starts.
What the Honest Answer Looks Like
There’s no single figure that answers “how much does an office fit-out cost”. The honest answer always depends on your starting space, your specification and your timeline. What we can promise is a straight, itemised quote that shows exactly where your budget is going. No guesswork, and no surprises once the work is under way. Are you at the planning stage and want a realistic figure to work with? That’s exactly the conversation we’re set up to have.
Get a Real Number for Your Space
Ready to put a real number on your office fit-out? Request a free, no-obligation site visit and quotation from Interior Systems Wales. We’ll give you an honest, itemised breakdown for your space, not a guess. Get in touch with our team or call us on 01446 750994.
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