Has anyone had a situation where Countrywide ask for a 10 year new build guarantee for a house and say it's a new build when a property is extensively renovated and refurbished but all council consents were for extensions and factually it's not a new build. I can't seem to get hold of anyone for them to explain - I think they just looked at photo's online. The mortgage is with Tesco and they say they follow their rules but looking at the CML website a 10 year guarantee only applies to new builds or new conversions (ie splitting up a property into multiple dwellings or. Barn conversion). Has anyone had this issue and got Countrywide to change their mind. They haven't even done the survey yet - so it's ridiculous. How can a home factually not be a new build and then a bank has a strange definition or view that it is and then impossible to get a 10 year new build warranty as its not a new build!'