How Much Do House Extensions Cost In Merseyside?

One of the most common questions we get at Leabra Construction NW is: how much does a house extension cost in Merseyside?

While every home is different, we’ve outlined key factors and average prices to help you plan with confidence.

Average House Extension Costs in Merseyside

Costs can vary widely depending on size, materials, and specifications. On average:

• Single-storey rear extension: £1,500 – £2,300 per m²
• 
  
• Double-storey extension: £1,800 – £2,500 per m²
• 
  
• Side return extension: £1,700 – £2,400 per m²
• 
  
• Wraparound extension: £2,000 – £3,000 per m²
• 
  

A 20m² single-storey extension might cost around £35,000 – £45,000, while a larger double-storey could reach £60,000 – £80,000+.

Factors That Affect the Cost

• Planning permission and design complexity
• 
  
• Foundations and structural work
• 
  
• Plumbing, heating, and electrics
• 
  
• Roofing, glazing, and insulation
• 
  
• Finishes and flooring
• 
  

We’ll help you understand each cost component and offer transparent, itemised quotes.

Why Leabra Construction NW?

We offer honest pricing, no hidden fees, and top-quality workmanship. Our Merseyside-based team manages your project from start to finish—so you stay in control of your budget.

📞 Get Your Free Extension Quote Today