My dad has agreed to cosign a lease with me but I am afraid my application will just be thrown out since I cannot provide a credit score or any proof of income. NOTE: Each adult who will reside in the unit, and each co-signer or guarantor, must complete their own application and pay the applicant screening charge.Requiring cosigners is a way for landlords to protect their income, especially when renting apartments to tenants with questionable income or credit history. Rental application. Apply. Co-signer. Review. Payment. Complete. All applicants age 18 and over must fill out an application. When requested, applicants can enter other co-applicants, co-signers, and guarantors they'll be applying with on their rental application. Edit, sign, and share Landlord Tenant Lease Co-Signer Agreement - Vermont online. Franklin St, Seaside. Make sure the cosigner also fills out a rental application. 3. Establish a Cosigner's Agreement.