Each guarantor must submit and execute a separate. Lease Guaranty, unless guarantors are married.A lease guaranty is an agreement that offers an added layer of security for property owners. Lease Guarantor: A lease guarantor may be used under the following conditions: Your monthly verifiable income is less than 3 X's the amount of the monthly rent. A lease guarantor form is an agreement that makes a guarantor responsible for a tenant's actions. If the lease is in writing, Texas law requires a landlord to provide the tenant with a copy of the lease within 3 business days of signing. No information is available for this page. Overall, the guarantor is applying for the apartment and must fill out a rental application, just like the tenant. Because most students won't have this type of income on their own, it is typical for student housing to require a guarantor to sign the lease.