Last year we had part of a wall of our house underpinned. This was not due to subsidence but because of an extension we had built. So that the old ground floor of the house (Victorian, detached house) could take the weight of the first floor extension, part of the downstairs wall was underpinned by our builder. Have just been trying to get a new buildings insurance quote and ..... nobody wants to know because we have had underpinning done! This seems mad to me. Firstly, this must happen to so many people - where do they get insurance from? Secondly, who actually knows that underpinning was done - could I just keep quiet about it? And thirdly, is this going to make it virtually impossible to sell my house next year? Any help/advice very greatly appreciated. If the house was a complete tip it would probably be dead easy to get insurance .