While the number of sales decreased by 30%, the Foothills houses priced between $500,000 and 1 million continued to appreciate.  The  2006 cost per square foot in the 85750 zip code showed a 6% increase and the 85718 zip code showed a 8% increase over 2005.  The other surprising statistics were that it only took an average of 52 days in 2006 versus 44 days  in 2005 to sell a house in the 85750 zip code, and it only took an average of 49 days in 2006 versus 45 days in 2005 to sell a house in the 85718 zip code; revealing almost no change.  If your looking at making the best investment decision, purchasing in the Foothills proves to be the best place to invest in Pima County.