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Review of Welsh Building Regulations Part L and F

Closing date: 17 February 2021

Objectives of the consultation

This consultation sets out changes to Part L (Conservation of Fuel and Power) and Part F (Ventilation) of the Welsh Building Regulations for existing dwellings, overheating in new dwellings, and changes to align with the energy performance of buildings directive.

Supporting papers

To download documents supporting this consultation, follow the links below.

What you can do

CIBSE will submit a response to the consultation and we would like to hear from you to best represent your views.

Please send your contribution using the consultation response form to Julie Godefroy, Technical Manager at by Wednesday 10 February, if you would like to inform the CIBSE response.