When businesses start exploring an office refurbishment, the first question is almost always the same: “How much does an office refurb cost?”
The honest answer? It depends.
The useful answer? It depends on very specific, manageable factors — and with the right planning, costs can be forecast accurately and controlled strategically.
Whether you’re refreshing a dated workspace, reconfiguring for hybrid working, or delivering a full office design and build project, this guide breaks down typical office refurbishment costs in the UK and what really drives them.
Average Office Refurbishment Costs Per m²
In today’s market, UK office refurbishment costs typically fall within these ranges:
- Light refurbishment: £35–£75 per sq ft (£375–£800 per m²)
- Mid-range refurbishment: £75–£125 per sq ft (£800–£1,350 per m²)
- High-spec refurbishment: £125–£200+ per sq ft (£1,350–£2,150+ per m²)
These figures are broad guides. The difference between a cosmetic refresh and a full-scale fit out can be significant.
A light refurbishment might include:
- Decoration to walls and ceilings
- Upgraded flooring and lighting
- Replacement office furniture
- Minor layout tweaks
A high-spec office fit out could involve:
- Full strip-out
- New glass partitions and internal glazing
- Air conditioning upgrades
- Mechanical and engineering improvements
- New toilets and washrooms
- Bespoke carpentry and joinery
- Acoustic solutions
- Full IT and power reconfiguration
The complexity of your scope will define your budget.
What Drives Office Refurbishment Costs?
1. Scope and Specification
The biggest cost variable in any office refurbishment is the level of transformation required.
If you are retaining existing services and layout, costs remain lower. But if you are:
- Repositioning walls
- Installing new glazing systems
- Introducing breakout areas
- Adding collaboration zones
- Creating executive suites
…then materials, labour, and programme duration all increase accordingly.
High-quality finishes and branded environments also influence price. Feature lighting, premium flooring, acoustic wall panels, and custom-built furniture add impact — and investment.
2. Mechanical & Electrical (M&E) Works
Mechanical and engineering upgrades are often the largest hidden cost in a refurbishment.
Air conditioning, heating, ventilation, lighting systems, fire alarms, and data infrastructure can account for 25–40% of the overall project cost.
Older buildings in particular may require:
- Full air conditioning replacement
- Electrical capacity upgrades
- Emergency lighting compliance
- Modern LED lighting installation
- Improved ventilation for wellbeing
While these works increase upfront cost, they improve energy efficiency and reduce long-term operating expenses.
3. Office Furniture and Workplace Strategy
Office furniture budgets vary dramatically depending on quality and layout strategy.
As a guide:
- Basic workstation setup: £500–£800 per person
- Mid-range ergonomic setup: £800–£1,500 per person
- Premium or bespoke solutions: £1,500–£2,500+ per person
But the real cost decision isn’t just about furniture price — it’s about workspace efficiency.
With hybrid working models now standard, many businesses no longer need a 1:1 desk ratio. Reducing fixed desks and investing in collaboration areas, meeting rooms, and flexible touchdown zones can rebalance the overall refurbishment cost.
4. Building Condition and Compliance
No two buildings are the same.
Common cost drivers uncovered during refurbishment include:
- Asbestos removal
- Upgrading fire-rated walls and ceilings
- Plumbing replacements in toilets and washrooms
- Insulation improvements
- Structural reinforcements
Early surveys and clear planning reduce the risk of budget shocks once works begin.
Office Fit Out vs Office Refurbishment: Cost Differences
It’s important to distinguish between the two:
- Office refurbishment upgrades an existing operational workspace.
- Office fit out transforms a shell-and-core or Category A space into a complete working environment.
A full office fit out generally requires installation of all services — flooring, lighting, air conditioning, partitions, furniture — from scratch.
Refurbishment may be more cost-effective if key infrastructure can be retained. However, partial upgrades sometimes lead to compromise if outdated systems restrict flexibility.
A design-led, strategic approach ensures the investment works for the long term rather than just solving short-term issues.
Warehouse and Mixed-Use Refurbishment Costs
For organisations operating combined office and industrial environments, warehouse refurbishment costs differ from traditional office projects.
Typical warehouse fit out costs range from:
- £25–£80 per sq ft depending on specification
Costs increase where projects include:
- Mezzanine floor installations
- Office insertion within warehouse space
- Heating and lighting upgrades
- Welfare facilities and washrooms
- Structural alterations
Integrating modern office environments within industrial spaces is increasingly common, improving staff wellbeing while maintaining operational efficiency.
Where Businesses Commonly Overspend
Understanding cost pitfalls can protect your budget.
Late Design Changes
Changes once works have started are one of the biggest causes of overspend.
Underestimating Services
Mechanical and engineering systems often require more intervention than initially expected.
Poor Phasing
Refurbishing in an occupied building requires careful planning. Inefficient phasing increases disruption and cost.
Choosing Lowest-Cost Materials
Lower-spec flooring, lighting, or furniture can increase reactive maintenance costs and shorten lifecycle value.
A Sample Cost Breakdown: 8,000 sq ft Mid-Range Refurbishment
Here’s a typical example for context:
- Strip-out and preparation: £60,000
- Mechanical & electrical upgrades: £180,000
- Glass partitions & internal glazing: £90,000
- Flooring and lighting: £120,000
- Office furniture: £140,000
- Decoration and finishes: £70,000
- Professional fees & contingency: £90,000
Total Estimated Investment: £750,000–£850,000
This would deliver a contemporary, energy-efficient workspace with collaboration areas, upgraded services, and high-quality finishes.
The Real ROI of Office Refurbishment
Cost is only one side of the equation.
Well-designed offices contribute to:
- Improved productivity (studies suggest up to 12% uplift)
- Reduced absenteeism
- Higher employee engagement
- Improved talent attraction and retention
- Lower energy usage
Acoustic solutions reduce distractions. High-quality air conditioning improves cognitive performance. Thoughtful lighting design enhances wellbeing. Durable flooring and joinery reduce long-term reactive maintenance.
An office refurbishment should be viewed as a business performance investment — not simply a facilities upgrade.
How to Budget Effectively
- Define your long-term business goals before design begins.
- Commission early building surveys.
- Prioritise mechanical and engineering infrastructure.
- Balance aesthetics with durability.
- Include a 10% contingency allowance.
- Work with an experienced office design and build partner who understands cost control from day one.
Transparency at concept stage prevents compromise later.
Final Thoughts
Office refurbishment costs vary widely, but they are far from unpredictable.
With clear scope definition, strategic planning, and experienced project management, your fit out investment can be controlled, measurable, and transformative.
Whether you’re planning a light-touch office refurbishment, a full office fit out, a warehouse refurbishment, or a complete design and build transformation, the goal should always be the same: creating a workspace that drives performance, supports wellbeing, and reflects your ambition.
If you’re exploring an upcoming project and want realistic cost guidance tailored to your building and business goals, speak with SJP Interiors. Let’s turn your refurbishment budget into a workspace that works harder for you.
