gcp Consulting has always carried out Code for Sustainable Homes (CSH) assessments (ans previously EcoHomes) on new residential developments.
The assessment has been introduced as a planning requirement by a number of local authorities including Bristol and North Somerset.
Whilst the government has dropped CSH assessment, it is still required for legacy schemes where certification is a funding, client or planning requirement.
The planning situation is a grey area until Local Authorities amend their core strategies. Until then, CSH officially remains a planning requirement in Bristol and North Somerset.
This should be discussed case by case with planning officers.