Kildare follows the national Irish tenancy rules, so the required notice depends mainly on how long the tenancy has lasted. A landlord generally must give 90 days’ notice for a tenancy of under six months, 152 days for six months to one year, 180 days for one to seven years, 196 days for seven to eight years, and 224 days after eight years. The notice must be in writing, meet legal requirements, and usually state the permitted reason; the landlord must also send a copy to the RTB on the same day. The RTB ultimately decides disputes about whether a notice is valid, so consider contacting Threshold, Citizens Information or the RTB for case-specific guidance.