Land registry ownership files

Identifies land-title and cadastral ownership records containing populated proprietor, tenure, parcel, legal-description, or encumbrance fields. Land-registry topics are retained for discovery at 65; populated register fields raise confidence to 75, while a formal title or parcel reference plus substantive ownership-interest evidence raise confidence to 85.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: Medium confidence is appropriate because land-title phrases also occur in public guidance and non-land ownership contexts. Enforcement requires populated register fields, and high confidence adds both a formal land-record reference and substantive ownership-interest evidence.
Detection quality: Topic false positive
Jurisdictions: global
Regulations: GDPR, AML/CTF Act (Cth), IPA 2009 (Qld), NDB Scheme (Cth), Privacy Act 1988 (Cth)
Data categories: pii
Scope: wide
Risk rating: 5
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?is)\b(?:land\s+registry\s+ownership\s+files?|title\s+deed|property\s+ownership|land\s+title|title\s+register|cadastral\s+record|property\s+transfer|land\s+registration|certificate\s+of\s+title|property\s+boundary|registered\s+(?:owner|proprietor)|encumbrance\s+record|registry\s+of\s+deeds|deeds\s+registry)\b

Corroborative evidence keywords

registered proprietor, legal description, tenure, ownership share, title number, folio reference, transferor, transferee, easement, caveat

Proximity: 240 characters

Should match

The archive contains land registry ownership files. — Low-tier probe - land-registry topic without populated register content
Title deed. Registered owner: Maya Chen. Legal description: Lot 14 on Plan RP8821. — Medium-tier probe - populated ownership fields without a formal title reference or interest evidence
Cadastral record. Parcel: Section 8 Block 3. Encumbrance: access easement. — Medium-tier probe - populated cadastral fields without a formal record reference
Land title. Title number: 12/8841. Registered proprietor: Maya Chen. Tenure: fee simple. Ownership share: 1/2. Easement: E-441. — High-tier probe - populated register, formal title reference, and substantive ownership interests

Should not match

unrelated generic text without domain phrases — No relevant topic phrases present
placeholder value 12345 — Random text should not match topic-specific regex
Motor vehicle title. Title number: MV-8841. Registered owner: Maya Chen. Ownership share: 1/1. — Vehicle-title collision must not enforce as land ownership
Domain registry property ownership. Parcel ID: DOM-8841. Registered owner: Example Pty Ltd. Transferor: Reseller Ltd. — Domain and digital-property collision must not enforce
Ship registry certificate of title. Deed number: SH-8841. Registered proprietor: Oceanic Ltd. Mortgagee: Maritime Bank. — Vessel-title collision must not enforce
HM Land Registry practice guide explains title number: AB12345, registered proprietor: Jane Doe, and tenure: freehold. — Public practice guidance containing realistic register fields must not enforce
Training example: Land title. Title number: 12/8841. Registered proprietor: Maya Chen. Tenure: fee simple. Ownership share: 1/2. — Structurally complete training content must not enforce

Known false positives

Land-registry practice guides, conveyancing training, and sample title documents can reproduce realistic references and populated register fields. Mitigation: Keep title topics discovery-only, require populated fields for enforcement, and reject explicit practice-guide, template, and training framing.
Vehicle, vessel, aircraft, domain, intellectual-property, software, virtual-property, and digital-asset records also use title, owner, parcel, transfer, and registry language. Mitigation: Apply non-land title collision exclusions to enforcing tiers and require land-title or cadastral topic evidence.