Our accuracy record
We back-test our value estimate on houses that were bought, renovated and resold. Each one is valued as of the day before it sold, using only the sales that had been recorded by then, and the estimate is set against the price it actually closed at.
188 closed flips were tested; 165 produced a value; 117 of those were renovated resales, which is the set the figures above describe.
By resale price
| Resale price | Cases | Median miss | Within 10% |
|---|---|---|---|
| $250k to $400k | 66 | 5.3% | 75.8% |
| $400k to $600k | 35 | 7.3% | 57.1% |
How to read this
These figures describe automated-valuation (AVM) estimates back-tested against actual closed resale prices. They are not appraisals, and no appraiser inspected these properties. Only renovated resales are counted, because the estimate prices a renovated house; cheap transfers between investors are left out.
The back-test measures the core value calculation; it does not include the photo review or any comparable sales an investor supplies. Past accuracy does not guarantee future results, and any single estimate can miss by more than the median. This record is summary statistics only and is refreshed monthly.