Andy Moger, from Tetlow King Planning, explains the role of a planning consultant and the benefits they can bring to a project.

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Beth Williams from Build Collective outlines the role of a structural engineer and explains what tasks might be undertaken on a house build.

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Martin Twamley from Steico explains how to use breathable internal insulation, while avoiding the risks of condensation and mould.

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As someone with no previous interest or skills in DIY, Passivhaus Consultant Es Tresidder explains why he went about changing that for his own deep retrofit project.

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Landscape Architect and Director of HLM Architects, Simon Bell, explains why he decided to upskill when it came to building his own house.

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Mark Siddall explains how thermal bypass – or air movement around insulation layers – might impact a self-build or retrofit project.

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Alan Budden explains how a phased retrofit might work and what preparation is required. He also shares how he's retrofitted his own home, which includes trialling an innovative roof solution.

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