Methodology
Ranking integrity
Ranking integrity matters. We check for duplicated, conflicting or unreliable evidence and review unusual changes before they affect a ranking. If evidence needs checking, we hold it until it can be verified rather than applying hidden penalties.
Integrity work does not change the scoring model. Unrelated facts keep their own evidence. Once a concern is resolved, the signal can be used again. Published ranking editions stay as they were at the time.
How we protect the ranking
Check the evidence
We look for duplicated claims, conflicts between sources and sudden changes in high-leverage facts such as capacity, bedrooms, accessibility and exclusivity.
Hold until we can verify
If a signal needs checking, we set it aside rather than guess. Other metrics are left alone. There are no hidden negative score points.
Restore what is verified
Once stronger evidence is in place, the signal can be used again under the normal rules. Historic editions are not rewritten.