Current Grantham median home price: $483,710
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 March | $499,320 | $449,388 | $549,252 |
| 2026 April | $502,219 | $451,997 | $552,441 |
| 2026 May | $505,135 | $454,621 | $555,648 |
| 2026 June | $508,068 | $457,261 | $558,875 |
| 2026 July | $511,018 | $459,916 | $562,120 |
| 2026 August | $513,985 | $462,587 | $565,384 |
| 2026 September | $516,969 | $465,272 | $568,666 |
| 2026 October | $519,971 | $467,974 | $571,968 |
| 2026 November | $522,990 | $470,691 | $575,289 |
| 2026 December | $526,027 | $473,424 | $578,630 |