Home prices nationally increased 8.4% during the same period, but easy to explain. Texas did not have the severe slump that other states had. These figures are from the Federal Housing Finance Agency and their latest Price Index (HPI). OUR GROWTH IS FROM A STRONGER BASE according to Dr. Jim Gaines, economist at the Real Estate Center at A&M. Houston-The Woodland-Sugar Land had the largest one-year increase at 10.31%, following by Austin-Round Rock at 10.08% and Dallas-Plano-Irving at 9.73%.