If nobody wants to sell, nobody wants to sell.
But eventually...
Change will happen, people would gladly pay a normal Bay Area house cost to get 1/10 of an Atherton house and live in that school district
School districts/boundaries being so unequal is at least partially the result of zoning policy that makes it harder for people of less financial means to move into affluent areas.
I saw a counterexample living in Munich, just in the sense that the differences between neighborhoods in apparent wealth were much less stark than in the US. Almost everywhere looked vaguely middling, very few places looked obviously rich or poor. And so it's no surprise that the differences between public schools was lesser too.
And how about estate sales? Are the out-of-state heirs going to care to who their parent's property is sold? Or are they just going to go for the top dollar?
This "hack" is apparently used in famous "no zoning" Houston to keep exclusive neighborhoods exclusive (https://kinder.rice.edu/urbanedge/houston-doesnt-have-zoning... )
Virtually every affluent residential neighborhood in Houston has strict private deed restrictions — and, remarkably many of those deed restrictions can be enforced by the city. That’s why River Oaks, Houston’s wealthiest neighborhood, doesn’t have apartment buildings or office buildings in the middle of the neighborhood.
https://www.cnet.com/culture/george-lucas-to-build-affordabl...
But on the other hand, the coalition of rich neighbors could organize a counter-offer to buy out neighbors who want to leave. A bit like lands are bought up by conservation groups to prevent development. Put a price on how much you want to preserve your neighborhood.
They could even buy out the developer who purchased a spite sale, unless there are deed restrictions in that sale. Most developers are also doing it as a business, not for idealism, so it there ought to be a price point where they see it is more lucrative to fold than to go forward with the building project.
I'm not sure I understand the economic effect of something like this. At first blush it almost seems like the same feedback loop as land value taxes. But, it also creates a game-theoretic scenario where the coalition is pumping up the price of their own neighborhood and increasing the potential gains for the next defector, at which point the values could rapidly unwind if the coalition loses its way.
Free money for defection and could easily exhaust the resources of this coalition.
You really do not realize how big (or small, rather) apartment complexes are. 100-unit building is the size of 6-7 single family homes (or maybe 3 McMansions), and maybe twice as high. It would barely be noticeable in such neighborhood.
See this for example: https://ctexaminer.com/2021/10/23/100-unit-apartment-complex...
With parking minimums of 2 spots per unit, your standard 800 sq ft apartment requires another 600 sq ft of parking. And units can be stacked relatively cheaply, parking can't.
" There’s a lot of questions still unanswered, though. This will all be legally challenged since we’re in new territory with the HAA. Many developers still can’t believe it and aren’t sure to propose nor have readied capital to propose projects. Other builders since the Santa Monica news appear quite excited to build apartments in exclusive, expensive enclaves they’ve always wanted to. There’s a political question too about whether HCD will let substandard housing elements through just to not anger cities and incite backlash. "
Very likely the 'political question' will not be limited to 'whether HCD will let substandard housing elements through'.
I do wonder if anti-trust could be applied against such a "don't sell" pact, especially if it was successful enough to capture an entire town. Probably not, but that sort of anti-competitive behavior should most definitely be illegal, with stiff penalties for those who participate.