Father expired without writing a will. Mother, two sons and one daughter are surviving. There is one property in Bangalore-a three storied (GF,FF,SF,TF) independent house with compound. this is self made property of father. understand the four survivors are legal heirs for this property.Now ,for convenience sake, if children agree in writing to make the Khata of the entire house in the name of Mother and then can Mother make a will as per her wish for the entire property. will it be legally valid.