My dude is level 1 construction, went and bought the house from the bloke in Varrock for 1 grand. Gone to my house with all the gear and he starts out trying to build a level 4 bookcase and keeps producing errors in chat. This would probably lead to detection. Gonna manually get to bookcase level and see how it goes after.
EDIT: Yeah this is shit, I got level 5 and it tries to buy a kitchen and build larders. Nuk good