Do you understand how much Southern California home prices have changed over the past decade?

My trusty spreadsheet analyzed Attom’s homebuying data to identify which of the six counties in the region experienced the largest price jump over the past 10 years through September 2025. The analysis also revealed how prices have shifted across Southern California, all of California, and the entire nation.

We used this data to create a quiz that helps you view the price gains from a regional perspective. And we added the price changes over the previous 10 years, so the price roller coaster is clear.

To see the big gains, and the smaller ones, you can take the quiz here or find the questions in the frame below.

Jonathan Lansner is the business columnist for the Southern California News Gr

See Full Page