Naperville home sales for the month of September rose in volume by 18.5% when compared to last year, while the median sale price rose by 2.3 Naperville home sales for the month of September rose in volume by 18.5% when compared to last year, while the median sale price rose by 2.3% from $332,250 to $340,000. The number of Single Family homes sales rose by 22.2%, while the median sale price decreased by 4.7% from $426,000 to $406,125.