There is a(n) possibility, but I high doubt it.
Very rarely, the only examples I can think of are "Fake blood" in player owned houses and simple scars on players.
You can not put banks in Player Owned Houses. You can how ever hire a butler, he will fetch certain items from the bank for a small fee.
You can repair them at a Player Owned House.
I don't think there is any such thing as a player-owned shop in RuneScape.
Can only be done in a Player Owned House, simply by clicking it.
At a player owned house, someone who has a gilded wardrobe.
In someones player owned house with high level construction.
A Runescape Private server is a player owned version of runescape pretty much, and they are used for players who can't afford to play the main runescape or who are not good at the main runescape to have their own little fun.
in a player owned house, cooking guild or the grand exchange off another player.
Player-owned houses' workshops, however you must first speak to the Chief Herald in Falador White Knights' Castle to be assigned a family crest before you may paint heraldic armour.
These would be placed in a Quest Hall.
Yes, you can build a Dungeon and place monsters in it, which you can then attack.