Costs & Budgeting reviews, comparisons and buying guides from Sareth Build Journal.
Single storey extension cost in 2026, explained per m2: what drives the price, what is included, and the fees most quotes leave out.
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Loft conversion cost in the UK for 2026: real price ranges by type, the extras people forget, and what pushes the bill up. Indicative figures, not a quote.
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Kitchen extension cost in the UK for 2026: real price ranges for side return, rear and wraparound builds, per square metre rates and the extras to budget for.
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The hidden extension costs that blow UK budgets, VAT, professional fees, party wall and contingency, and how to build them into your figures from day one.
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