Commercial Property Refurbishment Cost and ROI Planning

UK construction cost data indicates render costs typically range from £40–£120 per square metre depending on the system selected. Standard cement render costs £40–£80 per square metre, while modern silicone render systems range from £75–£120 per square metre.

• Minor repairs (crack filling, small patches): £15–£30 per square metre
• Section replacement (damaged areas): £5,000–£15,000 depending on extent
• Complete render replacement: £40–£120 per square metre depending on system
• Insulated render systems with thermal boards: £90–£150 per square metre

A typical two-storey commercial building with 500 square metres of external wall requires £20,000–£60,000 for complete render replacement, with final costs dependent on system specification and building access requirements.

BCIS analysis of commercial cladding projects shows costs for rainscreen cladding ranging from £220–£265 per square metre for materials and basic installation. When including all associated works such as fire-stopping, flashings, and preliminaries, final costs for external wall cladding range from £800–£1,100 per square metre.

• Basic cladding systems: £80–£120 per square metre (residential-scale projects)
• Commercial-grade fire-rated compliant systems: £300–£350 per square metre (area of cladding, excluding preliminaries)
• Full commercial installation (including all works): £800–£1,100 per square metre

A medium commercial building (800 square metres of cladding area) typically requires £240,000–£880,000 depending on specification and complexity, reflecting the significant difference between basic residential-style systems and full commercial installations.

UK window replacement costs in 2025 typically range from £300–£700 for standard residential casement windows, but commercial installations command higher costs due to size, specification, and building access requirements.

• Standard commercial double-glazed units: £400–£800 per window
• High-performance low-E commercial glazing: £600–£1,200 per window
• Commercial curtain walling systems: £800–£1,500 per square metre
• Large format commercial windows: £1,000–£2,500 per unit

A 20-window commercial building typically costs £8,000–£16,000 for standard replacement, with costs increasing significantly for curtain walling or specialist glazing systems. Commercial window fitting is typically priced at £100–£300 per square metre.

Commercial entrance refurbishment costs vary significantly based on scope and specification.

• Commercial entrance door replacement: £3,000–£12,000 per entrance
• Reception area refurbishment (flooring, lighting, decoration): £5,000–£20,000
• Complete entrance transformation (doors, access control, lighting, flooring, signage): £15,000–£50,000

High-traffic commercial entrances require more robust materials and systems than residential installations, increasing costs but ensuring longevity and reduced maintenance.

Professional building cleaning services are priced by surface area and cleaning method.

• Standard building wash (pressure washing): £3–£8 per square metre
• Specialist stone or brick cleaning: £8–£15 per square metre
• DOFF or TORC specialist cleaning systems: £12–£25 per square metre
• Graffiti removal and anti-graffiti protection: £500–£3,000

A typical commercial building facade clean costs £2,000–£8,000 depending on building size, surface type, and accessibility.

Signage costs reflect design, materials, size, and installation complexity.

• Old signage removal and making good: £500–£2,000
• New external illuminated signage: £2,000–£12,000
• Complete wayfinding and branding system: £5,000–£30,000+
• Planning permission and building control fees: £500–£2,000

Commercial signage requires compliance with planning regulations, building regulations, and often landlord approval, adding time and cost compared to simple replacements.

Commercial grounds improvement costs vary by scope.

• Basic grounds maintenance and tidying: £1,000–£4,000
• Landscaping redesign with planting: £3,000–£12,000
• Hard landscaping (paving, walls, drainage): £10,000–£40,000+
• Car park resurfacing: £40–£80 per square metre

Commercial landscaping must withstand higher traffic and usage than residential gardens, requiring more durable materials and installation methods.

Professional compliance services ensure refurbishment meets UK regulations.

• Fire risk assessment (external walls): £800–£2,500
• EPC assessment and certification: £300–£800
• Building regulations compliance consultation: £1,000–£5,000
• Structural engineer reports: £500–£1,500 per report
• Full building compliance audit: £2,000–£8,000

Compliance costs are essential investments that protect property value, ensure insurance validity, and avoid prohibition orders or enforcement action.

BCIS data shows construction rates in Major Works, Minor Works, and Alterations & Refurbishment datasets increased by 5% in Q2 2025 compared to the previous year. BCIS forecasts suggest annual tender price increases of 2.8% in 2025 and 2.7% in 2026.

London and South East properties typically cost 20–30% more than Northern regions due to higher labour and material costs. Remote or rural locations may face higher transport and mobilisation costs despite potentially lower labour rates.