Housing Rate Sensitivity & Resilience Lab
Analyze why house prices defied the initial interest rate shock, and test whether mortgage lock-in, cash buyers, and debt service ratios can withstand higher-for-longer borrowing costs.
5-Year Price Trajectory vs. Affordable Fair Value
Balance of Forces Summary
| Market Driver | Underlying Factor | Price Impact | Status |
|---|
Why Didn't House Prices Collapse When Rates Doubled?
Standard economics predicts that when 30-year fixed mortgage rates rise from 3% to 7%, buyer borrowing purchasing power falls by roughly 33% for the same monthly cash outflow.
Yet across many advanced economies (particularly the United States), home prices hit new all-time highs instead of plunging. The primary buffer was supply-side paralysis: over 70% of homeowners held sub-4% mortgages and refused to sell, wiping out active listings faster than demand evaporated.
As The Economist observed, housing has historically been viewed as a one-way bet. But as loan resets compound, life events force sales, and commercial/multifamily distress spills over, this equilibrium faces severe stress tests.
Frequently Asked Questions
What breaks the "Lock-In" effect?
Lock-in is not permanent. It fractures under three pressures: (1) Labor market weakness (job losses force relocation or foreclosure), (2) Life milestones (divorce, downsizing, estates), and (3) Accumulated equity exhaustion, where buyers run out of cash reserves to bridge down-payment gaps.
How does the cash-buyer share insulate prices?
When cash buyers represent 25%–35% of acquisitions, a substantial portion of transactions never passes through mortgage underwriting. These buyers are indifferent to weekly mortgage rate spikes, placing a persistent floor under median comps.
What is the difference between nominal and real prices?
Even when nominal house prices appear flat, high general inflation (3%–5% annually) means home values are experiencing an invisible real terms correction of 15% to 20% over 3–5 years without widespread nominal mortgage defaults.