In order to qualify for most mortgage programs you usually have to have a middle credit score above 600. We do have investors that will accept scores below 600. If you have scores in this range it is possible to qualify for a home mortgage however additional documentation is required.
Other factors that help your credit picture are:
One of the easiest ways to build a credit history is through the use of "Secured Credit Cards". A secured credit card is a Mastercard or Visa card account that is opened using your own money as the security for the credit limit on the card. For the RD program you must have (1) open credit account that reports to the credit bureaus, with a 12 month payment history. In addition you may need a verification of rental payments for a 12 month period and alternate lines of credit that can show a 12 month payment history. An FHA or a VA loan may require (3) open lines of credit with a 12 month history.
MANAGING MY NEW CREDIT ACCOUNTS