Address Standardization

Last updated: July 30, 2026

Overview

Property and Mailing Addresses are standardized using USPS-compatible formatting to improve consistency and usability. Some addresses may be restricted from mailing due to state or local regulations, and mailing eligibility requires records to originate from an approved Direct Marketing list.

Details

Address standardization normalizes address components, including street names, directional indicators, unit designators, and ZIP/ZIP+4 formatting, so addresses follow USPS formatting conventions.

Key points:

  • Address formatting aligns with USPS standards to improve consistency across datasets.

  • The underlying standardization service is not disclosed.

  • While addresses follow USPS formatting rules, this does not imply the provider holds USPS CASS certification.

  • For consistency in communication, standardized addresses may be referred to as CASS Compliant, meaning they align with USPS address formatting standards.

Important Notes

Coverage

  • USPS-standardized formatting applies to both Property Addresses and Mailing Addresses.

  • Mailing eligibility may vary based on geography and applicable state or local regulations.

  • Not all standardized addresses are eligible for physical mail use.

Limitations

  • CASS Compliant does not mean USPS certification or endorsement.

  • A standardized address does not guarantee the address can be used for mailing.

  • A DO NOT MAIL restriction does not indicate an error with the address itself.

Integration Guidance

  • Use standardized addresses for consistency and matching purposes.

  • Apply the DO NOT MAIL indicator when determining eligibility for physical mail campaigns.

  • Mailing use should be limited to records sourced from an approved Direct Marketing list.

  • Treat address quality and mailing eligibility as separate considerations in downstream systems.