This chart from
Zillow.com show the estimated value of an average home in Gilbert, Arizona over the last 10 years. According to Zillow, the average Gilbert home was worth $362,900 in 2006 at the peak of the market, but dropped as low as $188,700 at the end of 2009.
The above chart, also from Zillow, shows the average price-per-square-foot in Gilbert, Arizona of homes actually sold. Obviously, it varies by the house and the neighborhood, but in general, if you want to buy a 2,000 square foot house in Gilbert, AZ, expect to pay about $200,000 in today's market.