This is just another government and housing association scam.
Where I live in the Borough of Wandsworth I am certainly in the majority of tenants who reside in energy carbon emission loaded zones, Gerry built on no proper foundations (mostly sand) with no cavity wall, no sub floor insulation.
Because these flats were built on the cheap for the likes of me in the 80's - brave new world and all that - unlike older properties that also lack cavity wall insulation or damp courses but were built to last by people who knew what they were doing - these flats were built by cowboys.
The only purposeful efficiency that they were aimed at was the pockets of social landlords and local authority.
The very mention of a so called 'decent homes standard' is nothing but political correctness and we all know how sincere that is.