Articles · Backtest report · Q2 2026
How accurate the estimate was for private projects, Q2 2026: median error 3.9%
Published 21 Sept 2026
Across 784 private projects with at least 5 sales to test against, the engine's estimate as of Q4 2025 missed the price each home then fetched by a median of 3.9%. Half the private projects scored between 2.6% and 6.0%; 508 of them, 64.8%, came within 5%. On average 33.2% of tested sales fell inside the published range.
Where it was closest
| Project | Median error | Sales tested | Inside the range |
|---|---|---|---|
| Casa Cambio | +0.5% | 8 | +75.0% |
| Rezi 3two | +0.6% | 5 | +80.0% |
| Kassia | +0.6% | 22 | +59.1% |
| J'den | +0.7% | 8 | +25.0% |
| The Collective At One Sophia | +0.7% | 16 | +43.8% |
| The Shorefront | +0.8% | 5 | +20.0% |
| Northwood | +0.8% | 6 | +16.7% |
| Verticus | +0.8% | 6 | +33.3% |
| Midtown Residences | +0.9% | 7 | +71.4% |
| Chuan Park | +0.9% | 77 | +51.9% |
Where it was furthest off
| Project | Median error | Sales tested | Inside the range |
|---|---|---|---|
| The Alcove | +63.3% | 5 | 0.0% |
| Skywaters Residences | +62.5% | 5 | 0.0% |
| The Scotts Tower | +62.0% | 14 | +7.1% |
| Miro | +41.5% | 5 | 0.0% |
| Vela Bay | +40.6% | 383 | 0.0% |
| The Promenade@pelikat | +39.5% | 7 | 0.0% |
| Pinery Residences | +36.2% | 412 | 0.0% |
| Woodhaven | +33.5% | 16 | +68.8% |
| Rivelle Tampines | +32.2% | 432 | 0.0% |
| Parc Komo | +31.3% | 5 | +40.0% |
Each project's backtest re-runs the estimate as of an earlier quarter using only what was known then, and compares it with the sales recorded since. Every project page shows its own score. The figure is a property of the engine's past estimates, not a claim about any home.