I was talking about purchasing. When purchasing part of the valuation of a house is the state of it, and as such if its got old tatty leaky windows they would be a devaluing factor.
So someone buying a modern build will typically get better in those areas but lose out in regards eg size of garden.
We shouldn't be subsidising those people.
In regards leases its far easier to impose restrictions on the owner again. You can't let without having say modern levels of loft insulation, or double glazing. Set a date in say 2025 for it to be complete.
I'm not sure how you can jump to perpetually higher bills and support since this is a very new thing. Its already being reversed out in effect.
Subsidised panels were trying to move technology forwards, as are heat pumps. New tech is always expensive and likely to see later improvements.
Double glazing isn't new tech