hi all got planning application ongoing for a new garage garden room I know I need to submit a building notice but someone has told me that the floor would need to be designed by a structural engineer is this true
if so would that just be for the concrete or the sub base too and would the BCO need to see the excavated area and every stage after
if so would that just be for the concrete or the sub base too and would the BCO need to see the excavated area and every stage after