My Father purhaased a land and constructed a house.Later I had constructed in the First floor with the help of housing loan with my father as a co applicant as the property was in my fathers name. My father is alive now. I have a sister and we are the only two children. At present my father is willing to give the entire ground floor as a share to my sister. Whether the property can be shared like first floor and gound floor as in case of flats. In such case what will be the legal issues in future when i wish to part with my share ?