We only accept Nevada residents as cosigners. 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.A cosigner for an apartment takes on the financial responsibility for a lease. Learn how having a cosigner can help someone get approved for an apartment. 8. All full time students may use a pre-approved cosigner if they do not qualify using the above criteria. Cosigner's need to fill out an application. Our Lease Cosigner Agreement form is customizable so that you can include as much or as little additional information as you would like. Signer, typically a financially stable individual like a family member, essentially vouches for you and agrees to cover the rent if you're unable to. A cosigner is someone who signs the lease along with the main tenant of the rental property. However, most cosigners will need to meet income and credit requirements.