Oh okie, I made it a habit to always interact with my retainers and FC chest inside my homes before I logout. My two mains always go to bed inside their homes for both rp purposes and also to reset the auto demo daily, then my minor alts do the same for my FC. It would be a bit nerve wracking getting that message and you're up to date so the best you can do is to continue to interact with your retainers/FC chest and maybe logout inside your homes to play it safe. It could be that, I've heard of people getting random emails warning them of auto demolition but it seems to be really rare. It's just a shame for those that do lose their homes have no way to get it back, even when contacting a GM.