Okay, bought the account off Ebay, six chars on Europa originally. Four of the chars had either religious or political names, so I cautiously changed their names to something more generic. Then I soulstoned the house-owner's skills so he's just a blank char with the Glorious Lord title. Then I xfered four of the chars to Atlantic where I usually play.

I made two crappy chars on Atlantic. Now, I'm wondering if I bought a seventh char slot code and xfered the GLord char to Atlantic, what will happen to his house? I don't wanna lose it or sell it. Will the other surviving char on Europa inherit the house and become house owner on the sign?

The house owner on the sign never changes, but any other character you have on the account will have full house owner abilities.

So go ahead and move the character over to Atlantic.