Long Post Warning
Some numbers to provide context about the "average" situation over the next couple of years, and impending doom/crash/defaults. This is assuming that the value of the "average" house is transitive between years ei. a house brought at the average price in 2018 could be sold at the average price in 2023, and that the average homebuyer has taken zero initiative to improve their situation via prepayment, blend and extend etc, and nothing to worsen via aggressive HELOC usage.
2023 - bought in 2018 (25 yr amortization, 5 year fixed, current rate 5.59)
- July Average house price - 545,700
- July Discounted 5 year rate - 3.04
- Payment at 5.5% down - $2,549
- Balance @ end of 5 - $458,763
- Renewal (maintain amortization) - $3,162 (124% of initial)
- Renewal (back to 25 year) - $2,824 (111% of initial)
- Payment @ 20% down- $2075
- Balance @ end of 5 - $373,434
- Renewal (maintain amortization) - 2574
- Renewal (back to 25 year) - $2,291
So the average 2018 buyer and mortgage holder has oodles of equity at renewal based on 2023 valuations, and is facing a 24% payment bump that can be mitigated down to 11% by tacking on another 5 years with a 25 year refi - yes this not ideal as it adds to the interest cost, but is a very reasonable approach to avoid default.
2024 - bought in 2019 (25 yr amortization, 5 year fixed, current rate 5.59)
- July Average house price - 525,900
- July Discounted 5 year rate - 2.49
- Payment at 5.3% down - $2,318
- Balance @ end of 5 - $438,292
- Renewal (maintain amortization) - $3,021 (130% of initial)
- Renewal (back to 25 year) - $2,698 (116% of initial)
- Payment at 20% down- $1883
- Person B Balance @ end of 5 - $356,017
- Person B Renewal (maintain amortization) - 2,454
- Person B Renewal (back to 25 year) - $2,192
So the 2019 buyer also as oodles of equity, enough for person A to survive the market collapsing to 72% of current while still maintaining an 80% loan to value at renewal. The renewal jump hits proportionately harder, but due to slightly lower purchase price and lower initial rate their payments will actually be lower than the 2018 buyer.
2025 - bought in 2020 (25 yr amortization, 5 year fixed, current rate 5.59)
- July Average house price - 561,600
- July Discounted 5 year rate - 1.89
- Payment at 5.6% down - $2,306
- Balance @ end of 5 - $460,797
- Renewal (maintain amortization) - $3,176 (138%)
- Renewal (back to 25 year) - $2,837 (123%)
- Payment at 20% down- $1879
- Balance @ end of 5 - $375,487
- Renewal (maintain amortization) - $2,588
- Renewal (back to 25 year) - $2,312
So the 2020 buyer sees yet higher proportional rate differential, but their overall situation in terms of renewal payments is very comparable to the 2018 buyer. The the 2020 buyer also has the advantage of 2 extra years to plan plus more expenditures become flexible in the long run. Person A can maintain an 80% LTV at renewal at 77% of current average price.
2026 - bought in 2021 (25 yr amortization, 5 year fixed, current rate 5.59)
- July Average house price - 693,900
- July Discounted 5 year rate - 1.68
- Payment at 6.4% down - $2,757
- Balance @ end of 5 - $561,983
- Renewal (maintain amortization) - $3,874 (140% of initial)
- Renewal (back to 25 year) - $3460 (125% of initial)
- Payment at 20% down- $2266
- Balance @ end of 5 - $461,853
- Renewal (maintain amortization) - $3,183
- Renewal (back to 25 year) - $2,843
Percentage payment increase very comparable to the 2020 buyer, but due to the price run up the actual dollar amount is significantly higher. The real sticky part is that the minimum down payment Buyer can only see a 7% hit to current average price and maintain an 80% LTV, with anything more than a 25% reduction putting them upside down. That's risky.
For anyone still reading
A. for the next 3 years (the 2018, 2019, and 2020 buyers cohorts) have reasonable off ramps to avoid default at renewal, and have a larger amount of wiggle room in terms of paper equity loss without going upside down. People will be pinched, but we shouldn't see massive defaults
B. IF (Big IF) rates stay as high as they are until 2026-2027 the the 21-22 buying cohort that bought at peak prices are going to take it on the chin. Massive payment spike, and decent chance of being upside down if we have any major market downturn.
C. I can't find any statistics, but based on news stories and anecdotes, an outsized percentage (historically) of these mortgages were co-signed. Parents are on the hook, and that's another layer of asset base and cash flow that will have to/ can make lifestyle changes to prevent widespread default.