California Housing Affordability Index
"The percentage of households in California able to afford a median-priced home stood at 19 percent in November, a 6 percentage-point decrease compared with the same period a year ago when the Index was at 25 percent, according to a report ... by the California Association of REALTORS® (C.A.R.). The November Housing Affordability Index (HAI) was unchanged from October, when it also stood at 19 percent."
As far as what areas are the most expensive in California, Santa Barbara was at the top! The second most expensive area was the Monterey region. For affordable areas, the High Desert region was number one, and the Central Valley region was second.
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