Member

The proportion of houses in England built before 1900 is 15% of all homes and in Wales it is 23% of all homes. It is nigh on impossible for the majority of those homes to achieve EPC level C. That is principally because they are built of solid brick, so you cannot do cavity insulation. When you start to do external and internal cladding, the costs mount up, and that factor does not go away. It goes away to a certain extent for properties built up to 1930, but the extra costs of dealing with listed properties is also a significant factor in how difficult it is to get these properties adapted.