Actually it would be better if under admin spectate, in order to make it look like an unique experience and so as not to abuse the system.
Script-wise:
1) Possibility for the owner to increase home security ( so the owner should be able to purchase a better door, better windows, eventually cameras that you should be able to check on your phone, an alarm system etc.. ).
2) Possibility for thieves to bypass all the security systems ( they might be able to lock pick the door, break the windows, their names shouldn't be visible via cameras if they're wearing masks, and they should be able to turn off the alarm system ).
Actually I would base everything on something like mini games, you know, when you try to lock pick the door, or when you try to turn off the alarm system maybe they can script something like "Cut the cables Minigame" ).
3) House inventory shouldn't be like "everywhere" in the house. The owner should have the possibility to place a safe with Furniture System ( and maybe he should be able to choose the safe, you know - something like Safe N°1 -> Low Security / Safe N°2 -> Medium Security / Safe N°3 -> High Security ). And when someone tries to open it, there should be another minigame.
4) Possibility for thieves to steal the forniture.
This would involve a lot of factors like time / experience etc.. and would be fun too.
