US median existing-home sales prices fall for two consecutive quarters before 2028.

Question

Six frontier AI models put this at 41% by 31 Oct 2029. Full reasoning from every model.

WillHappen.ai · Accepted Answer

41% — the median of 6 frontier models, resolving by 2029-10-31.

Answer

Gemini (Google): 41% — Turns on whether seasonal declines compound into true consecutive quarterly drops via rising supply or an unexpected recession. NAR non-seasonally adjusted medians routinely drop Q3 to Q4, but two straight quarterly drops usually require Q4 to Q1 declines. Persistent structural inventory deficits and high lock-in mortgage effects keep sellers sticky, making sustained falls rare. A spike in unemployment above 5.5% forcing inventory liquidation before end-of-2027 would push this well above fifty percent.

Answer

Claude (Anthropic): 40% — Hinges on whether high mortgage rates and inventory buildup finally break the sticky nominal price floor by 2028. Existing-home median prices have been remarkably sticky nominally despite low sales volume and high rates since 2022-2023. Rising inventory, elevated mortgage rates near 6-7%, and regional softness (Southwest, parts of South) increase odds of a real sequential two-quarter dip before 2028. Historically nominal median price declines are rare outside recessions (2008-2011), so absent a recession this stays below even odds.

Answer

GPT (OpenAI): 82% — High mortgage rates and weak affordability make at least one two-quarter national median-price slide likely before 2028 ends. NAR quarterly median prices have declined sequentially in prior cyclical slowdowns, though seasonality makes the series volatile. Rates, inventory, incomes and buyer demand must align; a recession or mortgage rates staying above 6% would sharply raise the chance. The key counterforce is constrained supply: persistent shortages and rate-lock could keep the national median rising despite low sales.

Answer

Grok (xAI): 92% — NAR raw quarterly medians drop Q3-to-Q4 and Q4-to-Q1 every year from seasonality. NAR existing-home medians peak in Q2/Q3 then fall through winter; two sequential quarterly drops therefore occur in most years. From Nov 2026 the remaining window still contains a full Q3-Q4-Q1 cycle before 2028, so the pattern repeats unless an unprecedented seasonal inversion appears. Only a switch to seasonally-adjusted or year-over-year series (not stated) would make the event rare; the literal series does not.

Answer

DeepSeek (DeepSeek): 38% — The sustained deceleration of housing demand relative to inventory levels. The current rate of appreciation, while slowing, has not yet triggered a sustained correction in the last 50 years of US housing cycles. For two consecutive quarters to fall, mortgage rates must remain high enough to deter buyers while inventory remains stubbornly high, which is not guaranteed by the… This scenario is slightly below the historical average for cyclical downturn initiation, as current economic indicators still show underlying resilience.

Answer

Qwen (Alibaba): 21% — Requires a recession severe enough to break the lock-in effect's grip on supply before end of 2027. Two consecutive quarterly declines in median existing-home prices have occurred only during the 2008-09 crisis in the modern era; even the 2022 rate shock produced at… The lock-in effect (homeowners holding sub-4% mortgages) keeps inventory structurally suppressed, meaning even a moderate 2027 recession would likely produce price… A sharp rise in unemployment above ~6% forcing distressed sales is the most plausible trigger; if the Fed is still cutting into 2027 rather than hiking, this drops…

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