What if collapsing commercial values hollow out city tax bases?
Plunging commercial assessments blow holes in city budgets, forcing service cuts that drive resident flight — the urban fiscal doom-loop; trade short office-exposed regional banks, CMBX and stressed-city munis. Rhymes with 1970s NYC near-bankruptcy and post-2020 San Francisco/Chicago budget gaps from collapsing downtown values. Transmission is property-tax base into muni credit and back into local CRE lenders. Forward angle: the lag between market value and assessed value means the budget hit is still building, so 2026-27 reassessments are the trigger window. Roots sensible.
Every number ships with its receipt — the odds, the range, the precedents, and a public grade at Reality Check. The statistical machinery that produces it is proprietary.
The butterfly cascade
How this trigger trickles across markets, left → right — the root shock, its first‑order moves, then the ripple effects. Drag any node; tap a market for its real price history.
Resolution timeline — how this probability is moving
Our model's odds (electric blue) over time vs the market's (Polymarket, amber), from the past toward the 1–3 years horizon. Each dot is a real macro event that nudged the probability — green pushed it up, red pushed it down. Tap a dot for the source. Loading the probability audit trail…
What it would mean
If this plays out, it is a risk-off shock. Plunging commercial assessments blow holes in big-city budgets, forcing service cuts that drive further resident flight. The trigger decomposes into signed root‑shocks — Credit spreads ▲ · Recession signal ▲ — which propagate through our causal graph to the markets below.