California County Models
Market area models of single-family houses, county by county and town by town: what drives value, the fitted models and their adjustments.
Each county below has a user guide, an overview page with a map of its towns, and one summary page per town. The town pages show what drives the value of single-family detached houses, as fitted by three regression programs (GAM, MARS and the elastic net) on each town’s sales, with the adjustments each model implies. No sale, address, parcel or listing remark is shown.
| County | What it covers |
|---|---|
| Alameda County | Single-family detached houses (12 cities, 12 Oakland sub-markets and 2 unincorporated markets), effective date 1 October 2026. |
| Monterey County | Single-family detached houses (10 cities and 4 unincorporated markets), effective date 1 October 2026. |
| San Mateo County | Single-family detached houses (19 towns), effective date 1 October 2026. |
| Santa Clara County | Single-family detached houses (14 cities and towns, San Jose in 13 sub-markets), effective date 1 October 2026. |
| Santa Cruz County | Single-family detached houses (4 cities and 6 unincorporated markets), effective date 1 October 2026. |
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