We have something like 2M people with adjustable rate mortgages. Those people will be selling or defaulting soon.
There are a few narratives around.
There is the variable rates. I would imagine most of those people bought in late 2021/2022 or later, so you have a few years before many reset - I think there usually fixed for 5 years. So maybe they start to reset in 2026 earliest?
You have all the people that bought for airbnb but that market is drying up - work from home is dying.
You have Meredith Whitney who says the boomers will want to downsize / rightsize or just move. Peak boomer was last year - so the population at retirement age gets smaller every year going forward.
You also have a ton of people with 30 year fixed at 3%, so there prisoners in their home. So there not going to sell theirs and buy something else. Someone always needs to sell - job relocation, more kids, divorce, whatever. So when people do need to start selling the buyer pool will be smaller.
Likely will still take years to play out, unless we have some sort of economic shock in the meantime, and will vary greatly by market.