I loved ORPGs from WC3 and ran a clan just for them for a short time. I might be able to join and help with triggering/ui as coding is my focus, but I'm not sure at the moment how much time I can dedicate as classes will start up later this month and I'm unsure how much extra time I'll have. I'd have to wait till the end of the month to let you know.
Anyways, the only issue that comings to mind with player housing might be the amount of data needing stored compared to the size of the house.
The way I'd see it would be to have a set size area that the player house gets spawned in. This could be in a set location or may placeable. Then the player that owns the house could bring up a menu or be able to drop items to place them inside (perhaps like buildings/doodads). Then when a player loads their house data would be loaded from the bank or a separate bank if you want and the items placed inside would be spawned based on their stored locations.
I'm almost always on my computer if I'm not sleeping, so if you wanta hit me with a message feel free too. Just mention who you are.
P.S. The terrain looks nice from those screens.