How Much Does a House Extension Cost in Cheshire in 2025?

Complete project in Didsbury

If you’re a homeowner in Cheshire thinking about adding more space to your property, you’re not alone. With rising house prices, many families are choosing to extend rather than move. But one of the first questions we get asked at Tatton Projects is: “How much does a house extension cost?”

The truth is, costs vary depending on the size, style, and finish — but in this article we’ll break down typical 2025 prices in Cheshire, explain what affects them, and help you budget with confidence.

Average Extension Costs in Cheshire (2025)

• Single-storey extension: from £1,800 – £2,500 per m²

• Double-storey extension: from £2,000 – £3,000 per m²

• Rear / kitchen extension: from £30,000 – £60,000 depending on size and finish

• Side return extension: typically £25,000 – £50,000

These figures are averages. Your project may cost more or less depending on the level of specification, access to the site, and whether structural work is required.

Key Factors That Affect Extension Costs

1. Size & Layout – A larger footprint naturally increases costs, but shape and design complexity matter too.

2. Materials & Finishes – Brick type, roofing materials, windows, doors, and interior finishes all impact price.

3. Structural Changes – Removing load-bearing walls, installing steel beams, or underpinning foundations will add cost.

4. Planning Permission & Building Regulations – In some cases, fees and approvals are needed.

5. Location & Access – Projects in built-up areas or homes with restricted access can take longer and cost more.

6. Professional Services – Project management, architectural drawings, and design input should be factored into your budget.

Why Extend Your Home Instead of Moving?

• Add value: Well-planned extensions often increase your property’s market value.

• Tailored space: Create the kitchen, living space, or extra bedrooms you really need.

• Avoid moving costs: Stamp duty, legal fees, and moving expenses can often exceed £20,000.

How Tatton Projects Can Help

At Tatton Projects, we specialise in extensions across Altrincham, Cheshire, and Greater Manchester. Our design-and-build approach means we handle everything — from initial planning through to construction and finishing.

With experience in managing both small and large residential projects, we focus on delivering on time, on budget, and with the highest quality workmanship.

Final Thoughts

House extension costs in Cheshire in 2025 typically start around £30,000, but the exact price will depend on your design, size, and finish level. The best way to get an accurate idea is to speak with a professional builder who understands your goals and your property.

👉 Contact Tatton Projects today to arrange a consultation and start planning your dream extension.