Median home prices in San Jose are at $720,600.It’ll cost you $865,000 to buy a medium priced home in Pleasanton. It drops to $616,700 by the time you reach Livermore and $370,000 when you cross the Altamont Pass into Tracy.So why should any of this concern you if you live in Manteca, Lathrop, Ripon, Turlock, Ceres, Modesto, Patterson, or Stockton?The reason is simple. Housing is the biggest part of a typical family budget accounting for 20 to 35 percent of all expenditures.If you rent, you should worry about ever increasing prices in San Jose, Pleasanton, and Livermore.