U.S. Federal Housing Finance Agency, All-Transactions House Price Index for Orange County, CA [ATNHPIUS06059A], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/ATNHPIUS06059A, December 31, 2019.

Source: U.S. Federal Housing Finance Agency Release: House Price Index

Units: Index 2000=100, Not Seasonally Adjusted

Frequency: Annual

As stated by the source, these annual county indexes should be considered developmental. As with the standard FHFA HPIs, revisions to these indexes may reflect the impact of new data or technical adjustments. Indexes are calibrated using appraisal values and sales prices for mortgages bought or guaranteed by Fannie Mae and Freddie Mac. As discussed in the Working Paper 16-01, in cases where sample sizes are small for the county area, an index is either not reported if recording has not started or a missing value is reported with a period (.). Index values always reflect the native county index, i.e. they are not made with data from another area or year.

library(dplyr)
## 
## Attaching package: 'dplyr'
## The following objects are masked from 'package:stats':
## 
##     filter, lag
## The following objects are masked from 'package:base':
## 
##     intersect, setdiff, setequal, union
library(readr)
library(ggplot2)
library(lubridate)
## 
## Attaching package: 'lubridate'
## The following object is masked from 'package:base':
## 
##     date
housing <- read.csv("E:/FRED DATA/CASTHPI.csv",header = TRUE)
housing$year <- year(housing$DATE)
housing$month <- month(housing$DATE)

Orange County House Price Index

Index 100 at year=2000, Not Seasonally Adjusted

Riverside County House Price Index

Note : Price index has not reached the old peak yet.

San Diego County

Index 100 at year=2000, Not Seasonally Adjusted

Per Capital Income

San Francisco County House Price Index

2018 Index is so much higher than the 2008 index peak