Property division

Hi.my name is himanshu. My father name is nemichand ranka.he is the head is our family.he has one younger brother who's name is Jitendra and her wife name is chandrika.nw the problem is we have two flats in Mumbai. The one which we are living is in the name of chandrika. And the one which my uncle Jitendra is living is in the name of Shashi who is my mom.how shall we divide the property rather the paying stamp duty since it's a waste as the property is being divided with mutual understanding.please kindly help.