← All questions
🏗️ Buildergeneralunited kingdomcost

What is the average price guide for building in St Helens?

United KingdomAsked 2026-04-1826 views1 answers79 total votes

What is the average price guide for building in St Helens?

1 Answer
Sort by
79
Helen CrossBuilding Specialist · 16 yrs
2026-03-19

When considering building projects such as house extensions, loft conversions, or garage conversions in St Helens, it's important to have a clear understanding of the costs involved. On average, a single-storey house extension can range from £1,200 to £2,000 per square metre, totaling approximately £25,000 to £50,000 for a typical 25-square-metre extension. For a loft conversion, costs generally vary between £30,000 and £50,000, depending on the complexity and type (e.g., Velux or dormer). Meanwhile, a garage conversion can typically be completed for about £10,000 to £20,000, making it a more budget-friendly option.

It's essential to work with professionals who are certified, such as those registered with NICEIC or Gas Safe for any heating and plumbing work, to ensure safety and compliance with local regulations. Remember, prices can fluctuate based on materials and design choices.

Looking for professionals in your area? Find vetted providers on TradeMatch.

Need a Builder in United Kingdom?

Get 3–5 free quotes from verified, insured professionals. No obligation, no spam.

Get Free Quotes →