Yep, as long as it states start date and salary you're good. I'm a leasing agent and do this all the time.You will need to offer proof of employment and guaranteed income. You can also use an official offer letter as proof of income as long as it includes your salary. A North Carolina rental application is a form provided to potential tenants to collect their personal information as part of a screening process. Q: In North Carolina, must a lease agreement be in writing? Is using a job offer letter for proof of income to rent an apartment illegal if i have no i Intention of taking the job? Bring along at least two pay stubs to show your income stability. You should also look back through your apartment application. Tax Returns – Request the applicant's W-2.