Current Port Costa median home price: $654,555
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2025 September | $659,033 | $593,130 | $724,936 |
| 2025 October | $663,542 | $597,188 | $729,896 |
| 2025 November | $668,082 | $601,274 | $734,890 |
| 2025 December | $672,653 | $605,387 | $739,918 |