Quote Originally Posted by Dyvid View Post
Interior housing is instance based and shares the same data center server as all instance content in the game; dungeons, raids, trails, story battles, etc...
Wards are world server based and share only that worlds content.
My point here is the entire plot was instanced and only showed the last house you changed it to. Would cause an issue with going into others yards to take a look at what they did/didn't do.

Another thought is phased for each character at the minimum for whom you can have a house, and while still on the world servers it would reduce the amount of hardware needed for multiple characters on the same account to have a house. This however would allow you to explore other yards and better show off you home if you are really into that.