...situations: (1) where an improver, acting in good faith and under the mistaken belief that he owns the land, makes improvements on the land of another, being induced to do so by 'fraud, duress, undue.... See also Prince v. Crow, 589 So.2d 161 (Ala. 1991)[A]n equitable lien is appropriate when 'the improver of property, mistakenly and in good faith, believes he owns the property...with regard to "Improvements Upon Land or Chattels":
"(1) Except to the extent that the rule is changed by statute, a person who, in the mistaken belief that...