Like any other lender, Navy Federal Credit Union has eligibility requirements for mortgages. However, Navy Federal does look at your credit score and your banking history with the credit union to qualify you for a mortgage. As far as down payment options, Navy Federal Credit Union has several mortgages that require no money down, which could be helpful if you don’t have a large sum saved. The VA loan allows zero down and the seller can provide up to 4% of the home’s value to help pay closing costs. If you can’t use your VA loan benefit, you might be able to qualify for the Military Choice and Homebuyers Choice loans with no money down.