My Grandfather's property was put into an irrevocable trust for the benefit of my mother when he died in 1980. We have an appraisal that was done at that time. When my mother passed the trust was dissolved and ownership passed to my two sisters and myself in 2013. An appraisal was not done at that time. We know tax assessment value of the property in 2013. What do we use as a basis for capital gains when the property is sold?
