What if build-to-rent oversupply busts Phoenix and Atlanta rents?
Institutional build-to-rent oversupply in Phoenix/Atlanta collapses market rents and expands SFR cap rates, marking down Invitation Homes / AMH-type portfolios; trade short single-family-rental REITs, a localized supply glut rather than a macro shock. Rhymes with the 2017-19 multifamily oversupply in those same Sunbelt metros that briefly turned rents negative. Largely contained to US Sunbelt residential, so the modest cascade is appropriately small. Forward angle: rate-locked institutional owners can hold longer than 2008 flippers, slowing the price discovery. Roots reasonable.
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 6–18 months 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. Institutional build-to-rent communities flood Phoenix and Atlanta, collapsing rents and single-family-rental cap rates. The trigger decomposes into signed root‑shocks — Recession signal ▲ · Risk appetite ▼ — which propagate through our causal graph to the markets below.