A USDA Guaranteed Loan is a government insured 100% purchase loan. These loans are only offered in rural areas and have county loan amount limits, as well as income limitations. Section 502 loans are primarily used to help low-income individuals or households purchase homes in rural areas. Funds can be used to build, repair, renovate or relocate a home, or to purchase and prepare sites, including providing water and sewage facilities. Eligibility: Applicants for loans may have an income of up to 115% of the median income for the area. Families must be without adequate housing, but be able to afford the mortgage payments, including taxes and insurance. In addition, applicants must have reasonable credit histories.