Any property built after 1930 should be built with a cavity of some sort. However to make absolutely sure, we can arrange a free of charge home survey for you? If you manage to convince your neighbours to go along with your thoughts, then as long as the properties are not council or housing association owned, each person would need to ring individually to ask for cavity insulation.
I hope this helps? If you need any more info, just call us on 0800 980 2135.
