SHOULDISELLYET RESEARCH

The Warning-Sign Index

One number for the temperature of the U.S. housing market: the share of scored ZIP markets whose reading is WATCH or ACT — computed monthly from fixed, published danger lines. Free to cite; the data is downloadable in every release.

The Warning-Sign Index is under review and is not being published this month. The aggregates on this page are unaffected.

The Warning-Sign Index is under review and is not being published this month. The aggregates on this page are unaffected.

Not a researcher? Check your own ZIP code instead — one plain answer for your own market, free.

Monthly releases

ReleaseWSI
July 2026—
June 2026—

How it works

Definitions, danger lines, the FHFA backtest, restatement rules, and the versioned changelog live on the methodology page. Media and data questions: press@shouldisellyet.com.