To identify the original lease in the sublease agreement, use a language like “the particular lease signed by (call the parties) on the date (identify the contract by the date of signature)”. For the tenant who wishes to sublet part or all of the rental unit to another person, it is important that he correctly fulfills that person with the necessary duty of care. You should pretend to be a landlord and require a potential subtenant to complete a complete rental application. The application should seek written authorization to conduct a substantive review and credit quality control. It is permissible to charge a potential tenant a fee for this substantive check. Landlords who wish to prohibit the subletting of a rental unit altogether should indicate these conditions in the rental agreement. .