Tenent Illegally occupied my house in my native place

After my parents death, our Ancestral property at Panchgani, Dist SATARA was divided among st our brothers ( three brothers ). Prior to division of our property, My elder brother had given house on minimum rent of Rs.800/- PM, as the said person is Govt employee & transferable after every three year.After the division that house ( measuring 400 sq.ft ) came to my share. The person is residing in my house since last 25 years + and is not vacating the said house, over the years he was saying I will vacate once my sons education is finished ( SSC ) , then said I am getting transferred to Pune, he bought the flat at Pune etc. In spite of my repeated reminders / request to him, still not vacating the house. He is an Govt employee (working for MSEB ) where residential quarters are provided by Govt. He is occupying my house with some wrong intentions, to take " X " amount for vacating the house. I have sent letters to Municipality to issue the notice for the demolition of the house, as it is in dilapidated state & requires urgent repairs but all in vain. The municipal people are also hand in glove with him and are doing nothing. Please help me, whom should i approach for getting my house back.