House Extension cost by region

See how house extension costs vary across UK regions — quickly compare typical price ranges to understand what you might pay in your area.

London

£24,400 - £61,000 - £146,400

£22,400 - £56,000 - £134,400

£21,000 - £52,500 - £126,000

£21,200 - £53,000 - £127,200

£20,000 - £50,000 - £120,000

£19,600 - £49,000 - £117,600

£19,400 - £48,500 - £116,400

£19,200 - £48,000 - £115,200

£18,800 - £47,000 - £112,800

£19,600 - £49,000 - £117,600

£19,000 - £47,500 - £114,000

£18,800 - £47,000 - £112,800

Cross-check your preferred region against the full national guide, then run the calculator for a personalised estimate.