Property tax rate is generally around 2.3-2.6% with some hitting as high as 3%. That makes say...$400k home in TX cost $12k in property tax annually at the high end. In CA, this would be $3k/year.
So if one were to compare strict buying power of a family with annual income of $150k if you were to consider 3% (texas) vs 0.75% (ca) for property taxes :
| Texas | California |
Maximum Mortgage (36% DTI) | 623k | 840k |
Note also that home owners insurance in Texas is also one of the most expensive in the nation, and vast majority of homes have an HOA. This brings down Texan buying power by another 20-30k relative to California.
Add in the fact that PROP 13 limits California property tax rate increase to 2%/year, compared to Texas having a max of 10% (though can hit you cumulatively if your last assessment has been multiple years ago...for example, 3 years since last assessment means tax can go up, suddenly, 30%), and Texan purchasing power (due to speculation and worry) is reduced even further.
Add to the fact that TX is developer friendly, and having a glut of land, home prices tend to stay relatively low. Find an area too expensive? Move 10min further. Still too expensive? Move another 10min.