The average capital cost of improvements per dwelling reflects both how much each dwelling needs to be improved and the base position of the dwelling. Packages of improvements that make a large increase in energy efficiency are, on average, more expensive than those that make a small increase. The average cost of investments per dwelling in Scenario 1 is £627, in Scenario 2 is £1,232, in Scenario 3 is £2,672 and for Scenario 4 is £969.
The more efficient dwellings are, the more expensive they are to improve further. The average cost of improving a dwelling in band G by one band is £627 compared to £1,062 for a band E dwelling. A similar pattern is seen with regard to cost per SAP point increase - £46 for G to F, to £126 for E to D.
The average costs of improvements tend to be higher for rural dwellings as a higher proportion fall under EPC bands G and F in comparison to the overall target stock.
Email: Silvia Palombi
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