Pretty offtopic here, but I do not feel like creating a new thread for it.
I actually love the fact that the door is non-interactable for 'visitors'. Now you can section off parts of the house for guests, but still have access to hidden parts without the need to move walls each time.
Like, good way to get the storage chests out of view in houses, but still easily get to them.
Or wall off Psijic Villa palace door in a 'realistic' way. So you can decorate the yard and leave the palace empty (since there's not enough slots for both), without it being weird from RP point of view.
Now it is not a weirdly empty palace with lush courtyard. There's no random boulder/fence/whatever blocking palace entrance for no good reason. You just have magically locked door of a palace.
It is believable that the palace is off-limit to guests because it is a private residence of a host. You can imagine that palace is just as lush as a courtyard. And magical locks are not out of the ordinary in TES world.