Idaho Eviction Grounds Set Exclusively By State

Idaho Code 6-303 defines unlawful detainer and the legal grounds for eviction: nonpayment of rent, lease violations, waste or unauthorized assignment, and controlled substance activity on premises. Notice periods are set by statute: three days written notice for nonpayment, three-day notice to perform or quit for curable lease violations, and three-day notice to quit for serious damage or drug activity. Idaho is an at-will tenancy state for month-to-month leases, meaning landlords may terminate without cause with proper notice. Local just-cause eviction ordinances would conflict with state law and the rent regulation preemption in 55-307, which broadly prohibits local rules regulating residential rental terms.

Improper eviction notice voids the unlawful detainer action. Tenants may assert statutory defenses; landlords face dismissal and possible attorney fees.