Current Diamond Bar median home price: $1,003,996
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 January | $1,038,612 | $934,751 | $1,142,473 |
| 2026 February | $1,040,533 | $936,480 | $1,144,587 |
| 2026 March | $1,046,910 | $942,219 | $1,151,601 |
| 2026 April | $1,053,326 | $947,993 | $1,158,658 |
| 2026 May | $1,059,781 | $953,803 | $1,165,759 |
| 2026 June | $1,066,275 | $959,648 | $1,172,903 |
| 2026 July | $1,072,810 | $965,529 | $1,180,091 |
| 2026 August | $1,079,384 | $971,446 | $1,187,323 |
| 2026 September | $1,085,999 | $977,399 | $1,194,599 |
| 2026 October | $1,092,654 | $983,389 | $1,201,920 |
| 2026 November | $1,099,350 | $989,415 | $1,209,285 |
| 2026 December | $1,106,087 | $995,479 | $1,216,696 |