Current Diamond Bar median home price: $1,003,996
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 March | $1,014,756 | $913,281 | $1,116,232 |
| 2026 April | $1,020,867 | $918,780 | $1,122,954 |
| 2026 May | $1,027,015 | $924,313 | $1,129,716 |
| 2026 June | $1,033,199 | $929,879 | $1,136,519 |
| 2026 July | $1,039,421 | $935,479 | $1,143,363 |
| 2026 August | $1,045,681 | $941,112 | $1,150,249 |
| 2026 September | $1,051,978 | $946,780 | $1,157,175 |
| 2026 October | $1,058,313 | $952,481 | $1,164,144 |
| 2026 November | $1,064,686 | $958,217 | $1,171,154 |
| 2026 December | $1,071,097 | $963,987 | $1,178,207 |