Single Storey Extension Costs – Understand the true costs before you start
September 30, 2025
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Planning a single storey extension? Costs in the UK typically range from £1,800–£3,000 per m², with total prices between £45,000 and £90,000+. This guide breaks down rear, side and wrap-around costs, regional variations, council quirks, and the extra fees you’ll need to budget for to avoid hidden surprises.
