A guarantor is a person or a company who will co-sign on your lease in case you do not qualify to rent an apartment in New York on your own. They need to make 80x rent and provide last 2-3 bank statement, 2-3 pay stubs, last tax return and W2 and a copy of their ID and social.No. Something like this. TENANT: I want to rent unit 107. Rental App Form Phase 2. About, Listings, Resources, Reviews, Contact, Tour. Should your credit report or financial documents show less than stellar information, you can opt to present a financial guarantor. Your guarantor will fill out an application and provide similar documents to a landlord as you, including photo ID and recent bank statements. Application submission. Submission of an Application does not guarantee approval or acceptance.