Current Grantham median home price: $483,710
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 January | $512,431 | $461,188 | $563,674 |
| 2026 February | $515,691 | $464,122 | $567,260 |
| 2026 March | $518,971 | $467,074 | $570,868 |
| 2026 April | $522,273 | $470,046 | $574,500 |
| 2026 May | $525,596 | $473,036 | $578,155 |
| 2026 June | $528,939 | $476,045 | $581,833 |
| 2026 July | $532,304 | $479,074 | $585,535 |
| 2026 August | $535,691 | $482,122 | $589,260 |
| 2026 September | $539,099 | $485,189 | $593,009 |
| 2026 October | $542,528 | $488,275 | $596,781 |
| 2026 November | $545,980 | $491,382 | $600,578 |
| 2026 December | $549,453 | $494,508 | $604,399 |