"[T]he whole point of 'constructive eviction' is that the landlord basically drove the tenant out through the landlord's action or inaction." Kenyon v. Regan, 826 P.2d 140, 142 (Utah App. 1992) (citing Fernandez v. Purdue, 30 Utah 2d 389, 518 P.2d 684 (1974)). Thus, both a vacation of the premises by the tenant and a substantial interference by the landlord are prerequisites to a suit for constructive eviction.