zillow shows San Diego homes are up 275% (Poway homes only 200%, Chula Vista 275%, National City 340%, Solana Beach 400%, Del Mar 240%) in the last 10 years. We might disagree on their accuracy, but unless you think they are always biased in the same direction, that is a good guide.
The homes I looked at in spring 2000 were in the mid 300’s, and had been in the high 200’s the year before. By 2004, they were in the high 700s to low 800s. That is a tripling, is it not?
I am sure some houses did not gain as much as others, but I don’t really know enough about real estate to explain why one person’s home went up 140%, while the other went up 300%.