The arbitrary vandalism of the current government aside, some of this Labour is capable of preventing now simply by announcing it will undo it.
For instance if housebuilders are saving £8k at build time by not having to meet low-carbon standards, at a later cost of £33k to the taxpayer or homeowners to upgrade, Labour could announce that when they win the next election, they will pass legislation requiring housebuilders to pay to retrofit all properties built since now that don't meet low carbon standards. So they can pay £8k now, or £33k later, their choice.
Housebuilders can read polling as well as anyone, they're not going to pay more later.