(the Federal Reserve directly contributed to this problem by being the buyer of last resort for mortgage backed securities during the pandemic; this created the ultra low mortgage environment that has contributed to inflated real estate prices beyond what wages can support, it is reasonable and prudent for them to reduce the inflation they themselves directly contributed to)
~4.7M real estate transactions occurred in 2025, and based on that setting a new low record, can be a rough estimate of forward looking volume for price discovery.
That’s the barrier to adequate housing everywhere there is unmet demand driving high prices. You don’t need either monetary (interest rates) or fiscal (taxes/subsidies) hammers to get supply built, not will you do much by hitting the problem with those hammers as long as localities are literally prohibiting building.
But the bigger point isn't the simplicity or not of the policy or its adoption, but that other options will not work without it, and will not be necessary with it.
The number of buyers remains the same, so although the prices of homes shift, that often doesn't actually change affordability.
Yes, interest rates do affect the price one homebuyer will bid to.