(FREE DOWNLOADABLE CALCULATOR ATTACHED) Cost per m² London £3,000 – £3,200 Highest due to labour & material costs Essex & South East £2,700 – £2,900 Premium outer-London pricing South West (e.g. Devon, Cornwall) £2,400 – £2,700 Varies with rural vs. urban areas West Midlands (e.g. Birmingham) £2,200 – £2,500 Competitive pricing, especially outside city East Midlands (e.g. Nottingham, Leicester) £2,200 – £2,400 Affordable with good access to materials North West (e.g. Manchester, Liverpool) £2,000 – £2,300 Lower overall due to demand & labour costs North East (e.g. Newcastle) £1,800 – £2,200 Among the lowest nationally Wales£1,900 – £2,300 Lower labour & site costs in rural areas Scotland£2,000 – £2,400Similar to Midlands, varies with remoteness Northern Ireland£1,800 – £2,200 Great value, but materials may cost more in remote areas 🧮 Quick Pricing Tip: To price an extension fast: Extension size (m²) × your region’s rate Example:A 30m² extension in Essex at £2,800/m² = £84,000 (estimated)