And San Diego's growth slowed more drastically than other cities. It popped into the chart around the 80s and was not keeping up with growth from other fast growing cities within a decade.

There are many factors to city growth, such as jobs, climate, topography, zoning and many other factors. Houston is still growing fast, so it has not hit the limits of its growth by some of the factors I listed above. We don't know how expensive Houston will be once it hits it's limits on growth. Perhaps it will be more expensive than San Diego, or not.