Parents property and Grand father's property

 I have questions regarding claim of my right on the property of my Father and Grand Father’s. Property 1: My father died when I was aged 4 yrs , he had a plot in his name on which later a house was built by my mother. I have 1 sister who is married. I have supported my mother in my sister’s marriage and time to time on other duties. I had taken personal loan for my sister’s marriage and I am staying away from my paternal home since last 15 yrs because of service. I do not know if my mother has executed any will till now. I am afraid that my mother will not give me any share on the property. Also, how can I get the details of Life insurance policies of my father and money which my mother received when my father died? I want to know my birth right on the said property and legal process to claim the same and how much time does it take to get the matter settled. Property 2: My grandfather had a self acquired property (He had 4 sons & 2 daughters) , Both my grandparents have expired, I am not aware if they have executed any will , but I know that 1 portion has been given to my mother which she is taking care of and taking the rent coming from the same, I do not know if they have transferred the portion in her name. My Father expired when I was 4 yrs old.  Nobody is giving me any details regarding the will or partition. In case if the name transfer has been done in my mother’s name then what should I do? I want to know my right on the grandfather’s property and legal process to claim the same as the only son of the deceased legal heir of my grandfather. How much time does it take to get the matter settled? Conclusion: ·         I want to know my right from birth on both the properties: My Fathers & My Grandfathers as both are dead. ·         Both in case if the “Will” has been executed or in case if the “Will” is not executed. ·         Please guide with the legal process to claim my share. ·         How much time does it take to get the process completed? ·         I am in Gujarat and the properties are in Jabalpur, Madhya Pradesh , so want to know if the same can be done from Gujarat itself ?? Also are the laws different for both the states?   Regards, Vikas Rajak