Income tax and capital gains tax increased dramatically as a result... taxing your income isn't that cost of living?
Also, people who had property in 1978 have a great property rate and are disinclined to sell because if they were to move they would be hit with a much higher property tax. As much of California land and property has been parceled because of the increased population people with bigger tracts of land (from the 70s) are not moving. S0, you have a lot of people moving to CA and lots of people not moving out. This increases property costs.
(Not so ) Ironically there are ways that corps can sell their properties without a resetting of value. So, they don't have to pay the increase value tax that a home owner does... that lack of taxation of corporations... where do you suppose that revenue is generated? Park entrance fees, licenses for recreation, so on.
Further, because of the drop in property taxes the state has made that revenue elsewhere like increased and created fees (all over the place but new building/ construction fees..so, it technically isn't a tax but it's an increase in construction implemented to replace the revenue lost from the 1978 Prop), other taxes, fines.
I am not saying that the lone reason property and cost of living went up is Prop 13 but it would be naive (at best) to think otherwise.
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