republic vs. castelvi lends no support to appellants ' position ; because in the castelvi case , there was a finding by this court that `` ... the lands in question had ceased to be devoted to the production of agricultural crops , that they had become adaptable for residential purposes , and that the appellees had actually taken steps to convert their lands into residential subdivisions even before the republic filed the complaint for eminent domain ( p. 355 , 58 scra ) .