Yes can be only source of income assuming it is enough to keep the debt ratios where they need to be.
For SS income (f that is what we are talking about); you would need your SS award letter. Also would need 2 months of bank statements to show the receipt of it.
Same thing if it is a VA disability income award.
Thank you very much for the information, Heartland.
I will now have much more confidence in approaching lenders.
Do you have any advice as to what interest rate I should try to stay under and if I should take a smaller term to pay off the loan...say 10 years?