Who owns the Riddle house now?

[Valy]

No: HPFGUIDX 127306


And why wouldn't this person be... Voldemort himself?

After all, this is his father's house, and despite it's in a 
muggle area, this is a good hide, since Voldemort is known for 
hating muggles, and hiding in a muggle area (but without having 
to chat with them, and making himself discreet not to attract 
curious people, and making grow the number of killed on his list, 
and then attract the OotP, who've heard in some ways some strange 
muggles are missing, etc...) would be a good idea.

Why not after all?

Valy.