Average home prices rose in August for the first time in several years in Loudoun County. According to the MRIS, in August 2009, average home sale prices in Loudoun County are up 5.9% from the same time last year. In addition, the number of homes listed for sale is down 25% from last year in some areas. Buyers have been taking advantage of the combination of low interest rates and depressed prices as well as the temporary tax credit for first-time home buyers.