Current Grain Valley median home price: $323,129
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 March | $329,252 | $296,327 | $362,177 |
| 2026 April | $330,778 | $297,700 | $363,855 |
| 2026 May | $332,310 | $299,079 | $365,541 |
| 2026 June | $333,850 | $300,465 | $367,235 |
| 2026 July | $335,397 | $301,858 | $368,937 |
| 2026 August | $336,652 | $302,987 | $370,317 |
| 2026 September | $337,852 | $304,067 | $371,637 |
| 2026 October | $339,418 | $305,476 | $373,360 |
| 2026 November | $340,991 | $306,892 | $375,090 |
| 2026 December | $342,571 | $308,314 | $376,828 |