The Good Homes Alliance is working with partners Woodknowledge Wales to develop Building Performance Evaluation guidance for housing clients including developers, housing associations and local authorities.

The work is being carried out by the GHA and industry experts, Julie Godefroy (Julie Godefroy Sustainability/CIBSE) and Susie Diamond (Inkling), as part of a wider project team including Woodknowledge Wales and Cardiff Metropolitan University.

The guidance is being developed as part of the Home-Grown Homes Project which seeks to helping to improve the quality of new-build housing and further the use of locally sourced timber. The project is funded by the Welsh Government Rural Communities – Rural Development Programme 2014-2020.

The guidance will showcase how building performance techniques can help improve fabric performance to create low energy homes that perform as designed. The guidance will focus on building performance techniques that can be applied at design stage, during construction and post occupation, and include exploration of the following techniques:

  • Applying thermal modelling to reduce overheating risk
  • The use of overheating guidance to reduce overheating risk
  • Thermal bridge analysis
  • Diagnostic air tightness
  • Thermography
  • Co-heating & smart HTC (Heat Transfer Coefficient)
  • Occupant interviews

The guidance is due to be published in Autumn 2020 and will be available for free download to GHA members and wider industry. To find out more, visit

GHA working with Woodknowledge Wales to develop BPE guidance for housing clients

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