Com or ask your property manager about Leap. Applicants must have a total household gross monthly income which is equal to or greater than 2.6x the monthly rent.We may ask the co-‐signer to be placed on the lease. The. Co-‐signer document will have to be notarized unless signed in the presence of the lessor. You might need a cosigner if you're legally an adult, especially if you have no credit history, limited income, or no prior rental history. 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. If the other people named in the lease can't make rent or cause damages they can't afford to repair, the cosigner has agreed to pay instead. Note: We accept Co-Signers in most cases. We will ask the co-signer to be placed on the lease. Find out their history before you rent to them through proper screening of all applicants.