A section 21 possession order is a process that allows a landlord to reclaim the property. It is otherwise known as a ‘no fault’ eviction because a reason is not required for the tenant to be evicted. However, unless the current tenancy agreement is near its end, you cannot issue these notices if the tenant is contracted to live there.
When you give a section 21 notice to your tenant, it usually gives them at least two months to vacate the property.