Mailing address

Detects populated Australian mailing addresses, including street delivery addresses, PO/GPO boxes, locked bags, and private bags. Enforcing tiers require mailing/correspondence context and Australian geography; the strict tier also requires a labelled recipient.

Type: regex
Engine: boost_regex
Confidence: medium
Confidence justification: Medium confidence: a populated street or postal-delivery structure plus mailing and Australian geographic context is substantially more reliable than a mailing-address label. The high tier additionally proves recipient attribution and complete state/postcode geography.
Detection quality: Topic false positive
Jurisdictions: au
Regulations: AML/CTF Act (Cth), HRIPA (Cth), IPA 2009 (Qld), My Health Records Act 2012 (Cth), NDB Scheme (Cth), Privacy Act 1988 (Cth), TIA Act 1979 (Cth)
Frameworks: ISO 27001, ISO 27701
Data categories: pii, contact-information, location
Scope: wide
Risk rating: 3
Platform compatibility: Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Degraded, Netskope: Unsupported

Pattern

(?i)(?:\b\d{1,5}[A-Z]?(?:\s*[-/]\s*\d{1,5}[A-Z]?)?\s+[A-Z][A-Z'-]{1,30}(?:\s+[A-Z][A-Z'-]{0,30}){0,5}\s+(?:Street|St|Road|Rd|Avenue|Ave|Drive|Dr|Place|Pl|Court|Ct|Crescent|Cres|Close|Cl|Lane|La|Way|Parade|Pde|Boulevard|Blvd|Terrace|Tce|Circuit|Cct|Highway|Hwy|Grove|Gv|Square|Sq|Esplanade|Esp|Rise|View|Gardens|Loop|Trail|Track|Pass|Heights)\b|\b(?:(?:GPO|PO)\s+Box|Locked\s+Bag|Private\s+Bag)\s+\d{1,6}\b)

Corroborative evidence keywords

mailing address, postal address, correspondence address, delivery address, PO Box, GPO Box, locked bag, private bag, recipient, postcode, Access, ACCS, Alley, [object Object], Alleyway, ALLY, Amble, [object Object], Approach, APPR (+374 more)

Proximity: 300 characters

Should match

PO Box 77 — Exact 65 probe - populated postal-delivery structure without geographic context
Mailing address: 18 Church Street, Parramatta NSW 2150 — Exact 75 probe - populated mailing address with geography but no labelled recipient
Recipient: Full Name; mailing address: 18 Church Street, Parramatta NSW 2150 — Exact 75 probe - blank-form recipient placeholder must not elevate the address to 85
Recipient: Priya Shah; correspondence address: GPO Box 144, Brisbane QLD 4001 — Exact 85 probe - populated postal address with recipient, state, and postcode
Deliver to Private Bag 12, Hobart TAS 7001 — Australian private-bag delivery address
Postal address: Locked Bag 5000, Sydney NSW 2001 — Australian locked-bag address

Should not match

Mailing address: — Blank label must not be treated as a populated address
Please send the report to the mailing list before Friday. — Mailing prose without an address value
The conference is at 200 George Street, Sydney NSW 2000. — Physical venue address without mailing or delivery context must not enforce
Documentation example: Recipient: Priya Shah; postal address: PO Box 144, Brisbane QLD 4001 — Complete but explicitly documented example is excluded from enforcing tiers
The post office box design was approved by the facilities team. — Postal terminology without a numbered delivery structure

Known false positives

Physical venues and street locations can appear near general mail or delivery prose. Mitigation: Require explicit mailing, correspondence, postal, or delivery-address context for enforcing tiers.
Completed sample postal addresses in forms and guidance can look genuine. Mitigation: Apply the shared template-exclusion NOT-group to the 75 and 85 tiers.