Abstract: A method (800), apparatus and system for determining the value of a property is disclosed. The property includes land owned by a first party. The method (800) determines a first value representing value of the property at a first time. The method (800) then determines a second value representing value of the property at a second time, excluding modifications made to the land by a second party to whom the property is being leased during a period between the first time and the second time. The method (800) outputs the second value, wherein the first party retains ownership of the land and is entitled to an amount based on the output second value. The second party retains ownership of the modifications made to the land during the period and is entitled to an amount based on the value of the modifications made to the land during the period.