According to Vampire Diaries, vampires need to be invited by the owner of the home to enter. But what if my landlord is a vampire? In the UK, if I am a leasehold owner of an apartment, I am one of the owners of the apartment, but the vampire landlord still maintains a freehold ownership of the apartment [source]. If the vampire has an ownership of the apartment, does he need my permission to enter?
Vampire Diaries is somewhat unusual in that its conceit over the ability to block vampires from entering a property (the "invitation") are very much based on legal property rights. You can, for example block a vampire from entering a property that they had previously been invited to by signing the deeds over to another person. If the vampire is in the house at the time, they'll even be forcefully ejected, as we can see from this sequence from "Never Let Me Go"
Since under UK and US law (as depicted in Vampire Diaries, as well as in real life), a dead person can't own property, there is no set of circumstances where a genuine vampire could be the legal landlord of your property, and hence have an automatic right of entry.