According to an article on Yahoo Real Estate, the average time it takes to sell a home in the US stands at 117 days. The top 10 cities in the nation average 86 days or less. Tim Hoffman, office manager of Prudential Kahler Realtors, says Rapid City clocks in at a respectable 94 days. This underscores the fact that the Rapid City real estate market is one of the better in the nation.