Scottish Law Questions? Ask a Scots Lawyer
Joint ownership in Scots law is such that unanimity is required for anything connected to a heritable property. What that means here is that he can't move in without your permission and you can't let out the house without his permission. If you can't agree, and neither is prepared to allow the other to buy out his share, the sole remedy is that the house is sold and the proceeds divided. Happy to discuss further.
Ok he has moved in without my permission , can I move in also ? and tell him I,m going to be living there also ? short of the house being sold what are my options if any?
Yes you can move in as well. That is your only other option short of selling the house, in th absence of agreement.