The highest property valuation increases are being seen in Olive Branch. The city is leading all of DeSoto County for the second straight year, in property value increases. Total assessed property value in the city this year stands at just over 869 million dollars. That’s about 9.2 percent more than last year. All of Desoto County property in all cities came in just over 2.5 billion dollars. Also around a 9 percent increase over last year.