If you would like to write a letter to a tenant to vacate, here is a sample template you can use to write a notification letter to vacate the premises.
Dear, [Tenant’s name]
You have signed a contract to indicate your consent to an agreement. It has come to my attention that you have violated the [clause] in the lease agreement. It is thereby your contractual obligation to vacate the premises.
You have [Number] of weeks to leave or legal enforcement will be required.