Originally Posted by Magnum Johnson
A mortgage statement only proves that you pay for a mortgage not that you actually live there. I suppose a utility bill or vehicle registration does a better job proving that you are actually a CA resident living at that address.
A utility bill or car registration doesn't prove it any more than a mortgage statement. You could rent out your house but pay for the utilities as part of the rental agreement, or let a family member or friend live there, right? Or you could register a car, and then let someone else drive it while you are gone.
I would argue that its harder to buy a house than sign up for cable tv. A mortgage statement proves you own the house, and is tied to a physical address.