We have recently completed our side return extension and in doing so, lowered the floor level in the kitchen. In order to do this, we had to underpin the existing party wall because it wasn't deep enough. When looking at buildings insurance, the relevant question appears to be generic - along the lines of "has your property ever been underpinned?" Now that the answer to this is yes, I'm struggling to get quotes. Has anyone else had this issue and where were you able to find insurance? Did it make a difference (or should it make a difference) that the underpinning was due to the extension rather then subsidence, for example? I'd be grateful for any advice anyone has.