Multiple applicants' income will be combined. Guarantor: Gross monthly income must meet or exceed four times the monthly rent amount.Fill out the lease guaranty application online and send us your paperwork. To fill out the Guarantor Pre-Leasing Application, carefully review each section. Provide accurate information as requested, ensuring all fields are completed. Draft CoSign Lease Form A lease guarantor form should be presented to the tenant and guarantor for review. So, in the event you do not qualify on your own, your landlord may ask you to get a cosigner or a guarantor to complete the rental application. Com or ask your property manager about Leap. Overall, the guarantor is applying for the apartment and must fill out a rental application, just like the tenant. To your knowledge, have you, your spouse, or any resident listed in this.