Your Extension Budget is Probably Wrong in 2026

Planning a house extension in the UK in 2026? Before you set a budget, you need to understand the real cost of an extension — not the Google estimates or rough guesses. In this video, I break down exactly how much a UK house extension really costs in 2026, using real numbers, realistic assumptions, and a clear worked example. I explain: What actually affects the cost of a house extension Current UK construction costs in 2026 Cost per square metre for extensions and renovations The difference between standard builds and higher-performance, fabric-first construction Professional fees, VAT, contingency, and other costs people forget A realistic 25m² single-storey extension cost breakdown This video is designed to help UK homeowners budget properly, avoid nasty surprises, and understand whether their extension plans are realistic before they commit. If you’re planning a rear extension, kitchen extension, home renovation, or new build, this guide will give you the clarity most people never get upfront. 👉 Subscribe for clear, honest advice on: UK house extensions Renovations and home improvements Planning permission and building regulations Extension costs and budgeting Designing better homes that actually work