I was trying to make this point a few weeks ago here on HN, in a discussion on Prop. 13, and got pushback. I take this quote as evidence that it's common knowledge among people in the housing industry. Prop. 13 disincentivizes cities from adding housing.
Prop. 13 needs to be fixed. The way it should have been done is this: in a year in which property values increase by more than 2%, instead of limiting the tax to 2% more than the previous year's, we limit the payment due to 2% more than last year's payment due. The locality receives a lien on the difference, but that lien does not become due until the property is sold.
So in an area in which property values have been rapidly rising, a homeowner who sells their property will have to share their windfall to some extent with the locality. But those on fixed incomes are still protected: their annual tax payments don't increase any faster than they would today.
Common objections:
"People will take out home equity loans that will have to be repaid at sale, leaving them with a cash loss."
A property tax lien is a public record. Banks will take the liens into consideration when deciding how large a loan to offer. This is standard practice already.
"The liens will accumulate to the point that they will be greater than the owner's gain on the property, giving them a strong disincentive to sell."
No, this wouldn't happen, because the lien is only on 1% of the excess gain (the amount the value increased over 2%). If, for one example, the value jumped in the first year and then went flat, the payment would continue to grow at 2% annually until it caught up to the value. The only scenario that generates a lien larger than the owner's gain is if the market has been up but then drops sharply just before the owner wants to sell -- in short, if there was a bubble. Well, bubbles produce lots of dislocation; I don't think they make for a good argument against this proposal.
"Prop. 13 will never be modified."
Well, it certainly won't if no better alternative is put forth!