Valid rental agreement: The lease period must be for at least 6 months or more and the remaining tenure of the agreement must not be less than 2 months (can be issued for an indefinite period). It has to be signed by both parties (landlord and tenant). Valid utility bills such as water, electricity, gas, home attached television or internet bills, landline telephone bills. Mobile phone statements are not acceptable. Mortgage statement which is issued by a regulated financial institution.