It is illegal to scam or cheat when trading houses, this applies both for the seller and buyer.  You are not allowed to block off a room or a part of your house with items you lockdown, place with a deed or the sorts. Nor are you allowed to block the entrance to your house with anything. This rule will apply for all house types including fields and land. We will destroy any item used to block off an area, without warning you about it.

Blocking an entrance or a part of a room completely with religion rites Interdiction and Blessed Peace is considered illegal.