Property Issue

Dear Sir, Sub: Property Issue with my two younger brothers. With reference to the above, I require some legal open en I am the elder Son and I have two younger brothers and one younger sister we all are unmarried and we four member are staying in one house, the house is in my name, and my father was expired in 1997 and my mother was expired in 2010, now last one year onward my two younger brother want to divided the property and they met all our relatives and they are pressuring on me, the property details is given below. 1) Constructed House in 100Sq.yrds this is in my name and the land was gifted by my father before his death, and it was constructed with my own money with my savings and chit amount - In this property my younger brother will get share. 2) One House is in my fathers name, the area is 60sq.yrds. 3) One Open Plot of 200sq.yrds in my fathers name 4) One Open Plot of 120sq.yrds in my mothers name. I have told my brother and our sangam society people that the property will be divided after my younger sister marriage, but they are not listing to me and they are pressuring me. Please advice how can be divided the above property to our four members.