Property Identity Resolution Standard
The rules used to keep a property, an official record and a market advert distinct until independent evidence supports a join.
identity states
Confirmed, candidate and unresolved
coordinate-only confirmations
Proximity can create a candidate, never a silent match
preferred property reference
Used when source evidence supports the link
advert relationship retained
One property may have several representations
Principal findings
What the evidence shows
A source URL is evidence, not an identity.
Different adverts can describe the same home, while one operator page can describe several units. Source records remain individually traceable after a confirmed property link.
Coordinates are a candidate generator.
Location proximity narrows the search space but cannot by itself distinguish flats, neighbouring buildings or a displaced map marker.
Unresolved is a valid result.
The standard values a smaller set of defensible joins over a larger graph built from silent assumptions.
Figure 1
Identity decision path
A candidate advances only when independent evidence reduces ambiguity. Failing a gate keeps it unresolved.
Reading note. The bars show sequence, not a quantitative score.
Method
How this output was produced
- Normalise addresses, postcodes, coordinates and property attributes while preserving each raw source record.
- Generate a bounded candidate set using geography and any stable identifiers supplied by the source.
- Compare independent signals such as address agreement, property attributes, imagery and temporal consistency.
- Record conflicts and evidence provenance, then assign confirmed, candidate or unresolved status.
- Re-evaluate candidates when new evidence arrives without rewriting the historical source record.
Interpretation boundary
What this release cannot prove
- Some market sources intentionally obscure exact location, limiting defensible property-level resolution.
- Multi-unit buildings can share coordinates and address fragments.
- Image and attribute evidence can change over time and requires dated provenance.
Source register
Evidence and citation
Upgraded Intelligence (2026), Property Identity Resolution Standard, version 1.0, UI-STD-ID-2026-01.
Questions, corrections or requests for an accessible extract can be sent to hello@theupgradeauthority.co.uk.