Validation
A condition score or a detected feature is only useful if you can trust it. This page describes how outputs are checked before they reach a listing, and, just as importantly, where the system is weaker and a human should look twice.
Methodology
Model outputs are checked against a set of photos the models were not trained on, so reported accuracy reflects performance on unseen listings rather than photos the system has already seen.
A sample of outputs is periodically checked against a human reviewer's independent judgment on the same photos. Disagreements are used to recalibrate confidence thresholds, not just logged and ignored.
Outputs below a set confidence threshold are routed for a quick human check rather than delivered as-is. The threshold itself is tuned against the calibration results above, not fixed arbitrarily.
As the photo set grows, the holdout test is refreshed periodically so reported accuracy reflects current performance rather than a one-time benchmark.
Known limitations
Anything behind walls, above ceilings, or below grade (plumbing runs, wiring, foundation issues) isn't visible in a photo and isn't something the system can assess.
Dark, blurry, or heavily staged/edited photos reduce confidence across the board. Low-confidence outputs are flagged for review rather than guessed at.
Rooms with atypical layouts or mixed use (a bedroom doubling as an office, for instance) are harder to classify cleanly and warrant a second look.
Condition and quality norms vary by market and property style. A score should be read as a standardized signal, not a substitute for local expertise.
Data handling
Photos uploaded for analysis remain the property of the brokerage that uploaded them. Stryder processes them to produce the structured output described on the Technology page.
Photos and their derived analysis output are retained for as long as your account is active, so past listings stay accessible. If an account is closed, data is deleted within 90 days, except where retention is required to meet a legal obligation. Earlier deletion of a specific listing's data can be requested at any time. See the full Privacy Policy for details.
The fastest way to judge accuracy is to run it against a property your team has already reviewed by hand, and compare the two.