[header] How to write a letter for proof of residence [title] Understand the requirements of the letter. [step] The school or agency that requires such a letter may have certain demands of the affidavit. For example, the letter must disclose certain information, such as your name, address, and length of residency at the present address. 
[substeps] Some will require that a landlord sign the letter. Some letters will require the submission of other supporting documentation.