Oh dear, i thought it would be like that. Atleast now i know for sure, the thing with the addional retainer also crossed my mind. To bad there is no easy way for stuff like this and all i want is just a plot for the FC house. :/
On the other hand there are a lot of nice plots free on the other servers, even in Shiro. All small, but that wouldnt be sutch a big issue. But i would need store about 400-500 housing items somewhere. -_-