You can end the tenancy at any time after 6 months, provided any fixed term you agreed has ended and you have given a full 2 months' notice using a Section 21 Notice. You need to give your tenant 2 months written notice that you want your property back. You can seek to end the tenancy at any time if your contact has been breached on certain and specific ‘grounds’ as set out in the legislation. These include rent arrears, anti-social behavior and any damage caused by the tenant.