It's absolutely vital to homeowners that no new housing be built, to keep Undesirables from moving in, but they need to do it in a way which leaves no blood on their hands, so they can continue to have their In This House signs with no cognitive dissonance.

And this is how they get it: don't literally refuse housing, but make it economically impossible in practice. Then they can go "welp, nothing's getting built, I guess there's nothing we could've done", and as an added bonus they also get to say "looks like the free market can never fix our housing shortage!"

This is happening in large parts of the EU as well. It's pretty mind blowing. Since the mid 2010s, the new build construction rate has slowed down to alarmingly low levels. A few years before that, there was an oversupply, yet they kept building. It's totally intentional.

Unsurprisingly, affordability is so bad. In lots of major cities, a one-bed rental takes around 50% of a mid-career post-tax salary. You have become an indentured servant for whatever real estate fund owns your property. Lots of regulatory capture behind the scenes.

Ironically, some parts of the UK, including Home Counties, are now much better than most EU, including Scandinavia, with lots of shared ownership and affordable housing schemes. It's really easy. Increasing the supply of homes, in particular first homes, and preventing predatory tactics to hoard supply.