Difficult question so any help appreciated: I live in a house for which there are no official records as to when it was built. When taking out home insurance in the past I indicated that the house was 130 years old as this was a rough estimate by the surveyor. In the meantime, I did some research which suggests that the house was built later than that. The 1901 census building return form indicates that the building has 2 front windows whereas the 1911 census indicates that it has 4 front windows, thus suggesting that the house was rebuilt sometime during that period (though it's not clear whether it was totally rebuilt or just had a floor added to it). As insurance for post-1900 houses is significantly cheaper, I'm not sure what to do as I don't want to take any risk with insurance not paying up. If it came to it, would what's on these census forms be accepted as proof?
Thanks for your help!