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Newsletter Summary
The RESO Spring Conference agenda is live! The International MLS Forum in Toronto is loading up with attendees. Five new organizations achieved Data Dictionary 2.0 certification and four new items were added to the next version. Let’s get into it.
RESO 2025 Spring Conference: Standards in the Sonoran
The agenda is up and limited rooms remain for the RESO Spring Conference in Tucson, April 15–17. Make sure to book the days you don’t want to miss!
SEE AGENDA | EVENT AND REGISTRATION INFO | 9 REASONS TO ATTEND
Sponsor the Event!
Sponsors are showcased throughout the year. Contact advertising@reso.org for more info.
Thanks again to our amazing current sponsors!
Product Updates
Data Dictionary
- Transition of the “Master” Term to “Primary”
- Approved “soft deprecation” of “Master”
- Soft deprecation means that systems can still be in compliance by using Master as a local field, they have the option of also adopting Primary now, and adopting Primary will be required at a date and version to be determined in the future.
- Municipality vs. Township
- Approved removal of “Municipality” as a disallowed synonym from the Township field
- Legacy and Deprecated Data Elements (RCP-45) Proposal
- Power Production Source
- Approved a PowerProductionSource field to indicate the source of information about the property’s energy generation
- Addition to the PropertyPowerProduction Resource
- Approved a PowerProductionSource field to indicate the source of information about the property’s energy generation
Data Dictionary Subgroups
- Bulk Sale – Based on feedback from data providers, the group decided to pursue a Package Sale Resource to communicate bulk/package sales.
Intentionally International
Registration Open for the International MLS Forum in Toronto
RESO invites you to the 3rd International MLS Forum in Toronto, September 25–26, 2025.
This year’s event directly follows CMLS2025, which takes place September 23–25, 2025.
Transparent, standards-based, trusted marketplaces move inventory. | WATCH VIDEO | READ MORE
Certification Update
The following organizations achieved Data Dictionary 2.0 certification over the past month:
- BeachesMLS
- Dayton REALTORS®
- New York State Alliance of MLSs
- Omni MLS
- The MLS
All results are viewable in RESO Analytics. The certification status of all MLSs can be found on the RESO Certification & MLS Map.
Questions about RESO certification should be directed to your MLS vendor. Questions about self-testing or the technical aspects of certification may be directed to dev@reso.org.
New Members
Giant Steps Advisors
Giant Steps Advisors is a consultancy specializing in real estate that conducts go-to market strategy, strategic planning, product design, technical advisory, asset valuation, market opportunity forecasting, public speaking, recruitment and more.
REcore
REcore builds personalized, purpose-built solutions for MLSs and real estate associations, bringing everything needed into a single, easy-to-use platform.
Many of the people involved in these two companies are longtime friends of RESO, but we will still say welcome to RESO in this new iteration!
Industry News
New RESO Board Member
We would like to welcome Marty Reed to the RESO Board of Directors as a Board Advisor representing California Regional Multiple Listing Service (CRMLS).
New Data Share for MetroList, Northern Nevada Regional MLS and Oregon Data Share
MLSs based in Sacramento, California; Reno, Nevada; and Bend, Oregon announced a collaboration to share real estate transaction data across their market areas, allowing access to real-time, multi-state property listing data to subscribers and their consumers. | READ MORE
RED
RESO’s Working with Real Estate Data – Business (RED-B) course provides a primer for understanding how data flows through the industry. The course is popular for onboarding new employees and volunteer leaders. It is designed for both nontechnical and technical professionals and offers graduates a RED-B designation upon completion of the self-paced online course.
MORE INFO | SEE THE COMPLETE LIST OF RED-B DESIGNEES
Three Questions
The Three Questions interview series introduces you to real estate professionals with a hint of personality and humor. Watch for new entries every other Friday.
VISIT THE THREE QUESTIONS ARCHIVE
Recent entries:
RESO Workgroup Meetings
Transport Workgroup | February 3, 2025
The Transport Workgroup reviewed updates coming for Data Dictionary 2.1, outlined in [RCP-52] Data Dictionary 2.1. The group recommended deprecating the Media ImageSizeDescription field, enumerating the City field and creating a more comprehensive way to model school fields in a future version of the Data Dictionary. | NOTES
Research & Development Workgroup | February 6, 2025
The group reviewed the Data Consistency and Integrity Business Case and its new Integrity and Consistency Rules Supplement. The case proposes creating standards for identifying, reporting and handling data errors at the source, prior to them going out to public websites and other points downstream. Additionally, the group was informed of a new subject matter expert (SME) organization that has volunteered to participate in a subgroup on the New Construction Development Data Elements Business Case. | NOTES
Data Dictionary Policy Subgroup | February 11, 2025
The inaugural meeting of this subgroup covered the tasks in the RESO Duplication and Version Policy Work document. Goals include creating policies and standards that allow for faster adoption of and certification on approved Data Dictionary data elements, allowing data providers to advertise the version they are certified on and establishing policies around duplication and deprecation. | NOTES
Bulk Sale Subgroup | February 12, 2024
In response to feedback from data providers that reviewed the previous shape-based PackageSale proposal, the group is now in pursuit of a PackageSale Resource. Fields were reviewed and the proposal will be shared via email with all group members, including those that were not in attendance. | NOTES
Fast Track Subgroup | February 18, 2025
The group reviewed and approved Flooring lookups from the [Fast Track 2025] Suggested Mappings sheet. Additionally, the group reviewed feedback on Fast Track suggestions from organizations going through certification. | NOTES
Data Dictionary Workgroup | February 20, 2025
Using a “soft deprecation” of the word “Master” and transitioning to “Primary,” removal of “Municipality” as a synonym from the Township field, the Legacy and Deprecated Data Elements (RCP-45) Proposal, and a new field named PowerProductionSource for the PropertyPowerProduction Resource were all approved. | NOTES
Upcoming RESO Workgroup Meetings and Key Topics
Here are the major topics of discussion for next month’s workgroup meetings. Members can review workgroup agendas in the RESO Workgroup Collaboration System. | JOIN A WORKGROUP
Mar 6: Research & Development – More on the Data Consistency and Integrity Business Case and its new Integrity and Consistency Rules Supplement
Mar 11 & 25: Data Dictionary Policy – Focusing on tasks outlined in the Data Dictionary section of RESO Duplication and Versioning Tasks
Mar 11: Interoperability – Tagging for a new payload (e.g., Appraisal), delving into standards for AI-generated listing content, watch for new implementations of the Client Contracts proposal
Mar 12: Bulk Sale – In pursuit of a PackageSale Resource
Mar 18: Fast Track – Mapping suggestions for a new set of Data Dictionary fields
Mar 19: Internet Tracking – “RESO Verified” self-reported metrics, field and lookup review, privacy updates
Mar 20: Data Dictionary – Field discussion on BedroomsAboveGrade and BedroomsBelowGrade
Mar 20: Certification – Data Dictionary testing rules
Mar 27: Broker Advisory – Solving current pains of brokerage use of data feeds
Apr 7: Transport – Data Dictionary 2.1 updates, standardizing school and city information, Days on Market calculations
