Mhada house

Dear Sir, This is Prasad from Mumbai. My late father had been alloted a house by Mhada in Aram Nagar, Versova in the year 1972. He stayed there for a few months/year and then let his friend from native place to stay there. The friend has been staying there since 1976 and not vacating the house. He has not paid any rent to my father too. We are three siblings - two brother & one sister. My mother is alive and we all three siblings want the house to be transferred to our mother's name. The house is still in my father's name. The person occupying the house tried to transfer it in his name in Mhada but the Mhada authorities asked him to get an NOC from the owner. I got to know this because I filed an RTI in my mother's name and have all the correspondence till date. How should we proceed to get possession of this house. Please guide us and let us whether whether we will get possession of this house. We need an honest lawyer who will help us. Kindly let us know if your good-sefl can take up this matter. Thanking you, Prasad