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Welcome to the Real Estate Standards Organization (RESO) Data Dictionary Wiki

Each version of the Data Dictionary describes and organizes the internationally recognized standards for terms and fields related to the transmission of real estate data within a tree structure.

Introductory material is followed by a list of resources, groups, fields and lookups. Dictionary items include a definition, attributes and points of integration.

Be part of the real estate data conversation! If you are not already a member, consider joining RESO's growing ranks. Membership includes free certification. | JOIN RESO

Important for Certification

Data Dictionary 1.7 is the most current version for RESO certification testing purposes. Additional materials for certification can be found below.

Mobile Users

The RESO Data Dictionary is built upon Confluence, a web-based wiki. It is searchable within the Confluence app but the desktop version offers wider visibility of the left-side navigation pane.


The RESO Data Dictionary is a collaborative effort among numerous industry experts who volunteer their time, insight and expertise to the project. | LIST OF CONTRIBUTORS

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