Generally speaking, the amount down will be based on your credit rating. In the days prior to the recession, some could even get a home with 0% down, but sadly, those days are gone. Plan on at least 10% down, and shoot for 15% down to be safe. In my stint at Countrywide Home Loans, I noticed those who had more down (regardless of credit score) were better off, and the more you can show in savings, the better. If you have a credit score of less than 620, prepare to have a strong cosigner.