Seller concealed the facts about the property

I had taken a shop in December on rent for 3 years for running a coaching class two months back The agreement was registered. On 7th Feb I was shocked when I found a notice issued by court that the entire land area including adjoining chawls will be demolished within a day. I found out from adjoining shops that a case was going on for demolition in high court from the last 4 years. The owner cheated me as I was not told about all this. I have spent 3 lakhs on renovation and interior designing of the shop and paid deposit of 1lakh and rent for 2 months. The owner is ready to return the deposit and rent but he is not ready to pay the amount that I have spent on renovation and interior designing. Please help me.