How Much Does It Cost to Build an Outbuilding? UK Guide
November 23, 2025
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The cost of building an outbuilding in the UK typically ranges from £5,000 to £25,000, depending on size, materials and specification. Simple timber structures start at lower budgets, while brick or fully insulated garden rooms cost more. This guide breaks down real-world price ranges, planning considerations and what’s usually included so you can budget confidently.
