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RESO Spring Conference: Agenda Available, Late Registration

The 2023 RESO Spring Conference is April 18–20 in San Antonio, Texas, and we’re excited to see you there! The agenda is now available. | VIEW AGENDA

Register for livestream! To register for onsite, contact


RESO 2023 Spring Conference | April 18–20 | San Antonio, TX

Door Prize Opportunities Available for RESO Spring Conference

Providing a door prize gives your company a fantastic, low-cost marketing opportunity that gets your brand on center stage. If you would like to contribute, please contact

Thanks to those already committed to providing a prize:

RESO 2023 Spring Conference Door Prize Sponsors: CoreLogic, Quichet,,, Systems Engineering, Inc., dynaConnections, CRS Data, TRIBUS, FBS,®

Thank you to our current sponsors!

RESO 2023 Spring Conference Sponsors: Diamond | National Association of REALTORS®, CoreLogic Platinum | Canopy MLS, Contellation1, + Homesnap, MLS Grid, San Antonio BOR, Stellar MLS Gold | dynaConnections,, Rental Beast, RentSpree, Triangle MLS, ShowingTime+ Silver | CRS Data, Lone Wolf Technologies, SkySlope Bronze | AMP Systems, FBS, RE/MAX, Texas REALTORS®

Product Updates

Data Dictionary
Current and future versions of the Data Dictionary in spreadsheet format have been added to the home page of the Data Dictionary Workgroup on RESO’s workgroup collaboration system, Confluence, and to RESO’s website. The versions include:

Lookups Approved for PowerStorageType

  • Lithium Ion Battery
  • Lead Acid BatteryLithium Iron Phosphate
  • Other
  • Unknown

2023 RESO Winter Developer Conference | NOTES
Items that were discussed at the 2023 Winter RESO Developer Conference include:

  • More user-friendly and extensible metadata resources for models, fields and lookups
  • The ability to advertise capabilities, like whether a field is searchable, updatable or expandable
  • Support for locale, internationalization and local data elements
  • Pushing payloads to data consumers using web hooks and RESO Common Format
  • Add/Edit for Media resources using streams to update photos or videos

You can find timely RESO Product Updates on our website.

Certification Update

Congratulations to the following organizations for achieving their Data Dictionary 1.7 and/or Web API Core 2.0.0 endorsements and being added to RESO Analytics:

Certification Update: Florida Keys Board of REALTORS® Marathon and Lower Keys Association of REALTORS® Northeast Oklahoma Board of REALTORS® Northeast Washington Association of REALTORS® Realtyna Santa Barbara Multiple Listing Service Space Coast MLS Spanish Peaks MLS Teton Board of REALTORS®

View the certification status of all MLSs on the RESO Certification Map. Please send any address or subscriber count changes to

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


RESO’s Working with Real Estate Data (wwRED) course brings real estate industry newcomers and veterans alike together on a journey of data flow through organized real estate.

We have created a new brochure to share with your team that highlights the course, its benefits and its participants. | VIEW BROCHURE

We are now up to 506 RED-B designees! Here is who completed the course during Q1 2023:

Q1 2023 RESO wwRED Designees

Start working toward your RED-B designation today! 

New Members

New Members, April 2023: Engage Plus, REdistribute, repli

Engage Plus
Engage Plus helps business owners automate marketing, social media, lead discovery, client scheduling and time management so they can focus on more important things.

REdistribute delivers U.S. residential real estate data from MLSs to financial institutions, satisfying the need for top-quality MLS data for use in risk management, valuations models and more.

Repli is a PropTech company with an all-in-one marketing platform for multifamily companies, properties and teams. They simplify the prospect-to-resident experience for websites, SEO, advertising and beyond by centralizing the marketing stack into one powerful platform.

Strategic MLS Alliance
Strategic MLS Alliance brings MLS services together under one roof for the Shoals Area Association of REALTORS® and the Cullman Association of REALTORS®.

Welcome to RESO!

Industry News

For this issue, we are highlighting where RESO members and friends are already featuring industry news about other RESO members and topics that touch on items of interest to our audience.

Latest from CMLS: Rapattoni and Western Arizona REALTORS® Data Exchange (WARDEX) Partnerships with, Dave Howe named CEO of MetroList, Launches Aligned Showings.

Latest from Inman News: Inman’s Roadmap to Real Estate’s Future, Four Decades of Housing Data Tell a Complex Spring Market Story.

Latest from NAR: Baby Boomers Overtake Millennials as Largest Generation of Home Buyers, Second Century Ventures Announces Early Acceptances to 2023 REACH U.S. Programs, NAR Hosts Policy Forum on the Current Housing Market and Affordability.

Latest from RETechnology: Revive Wins Two ADDY Awards for Its Innovative Real Estate Mobile App and Website, AI and Real Estate Business Management, RentSpree and SkySlope Partner to Enhance Tech Capabilities for Rental Agents.

Latest from T3 Sixty: Breaking Down the 2023 Organized Real Estate Report, An Update on the Relationship Between New Construction and Low Inventory.

Latest from Vendor Alley: Omni MLS Partnership with Lone Wolf for Latin American Markets, REsides Launches Inspectify, CubiCasa Adds More MLS Organizations.

If you have a favorite real estate news source, please share!


AMLS Technology and Emerging Issues Advisory BoardMLS Technology and Emerging Issues Advisory Board
Affectionately known as MLSTEIAB, because it rolls off the tongue so well, this group of association, MLS and broker leaders meets at the National Association of REALTORS® headquarters in Chicago to discuss the most important topics affecting multiple listing services today. RESO CEO Sam DeBord gave updates on new developments with RESO Analytics, the new Web API Transition Guide and more.

Association Executives Institute (AEI)

Association Executives Institute (AEI)
AEI was held in Seattle this year, and we had a chance to chat with RESO members and listen in on sessions dedicated to MLS leadership and advancement.

2023 REALTORS® Legislative Meetings

2023 REALTORS® Legislative Meetings
At the next meeting for RESO after our own conference in San Antonio, we will be exhibiting on the expo floor on May 8–9 during the 2023 REALTORS® Legislative Meetings in Washington, DC. Stop by Booth 329 to learn more about RESO Analytics, the RED-B designation and how to join a RESO workgroup. Or just say hello. We love visiting with our members!

On the RESO Blog

One Feed to Rule Them All: Getting a Single API Data Feed Right

One Feed to Rule Them All: Getting a Single API Data Feed Right
Many companies offer certified RESO Web API services. We asked Joseph Szurgyi of MLS Grid and Turan Tekin of Zillow Group to explain how they are adapting as API vendors to support the need for holistic data feeds for brokers from MLSs. | READ MORE

Data Dictionary's Dramatic Effect on Your BusinessData Dictionary’s Dramatic Effect on Your Business
The Data Dictionary delves into property information, contacts, open houses, IDs, showings, green building initiatives and more. Knowing where we are today with the Data Dictionary and other RESO products is key to continued growth and adoption. Al McElmon, Senior Leader, Software & Data Engineering at CoreLogic used an interactive poll at the last RESO conference to look deeper into the dictionary & RESO as a whole. Not only was it a fun way to add interaction to a topic that is regularly covered at RESO meetings, but it evoked some interesting and surprising responses. | READ MORE

Three Questions

RESO 2023 Spring Conference | April 18–20 | San Antonio, TXThe Three Questions interview series introduces you to real estate professionals with a hint of personality and humor. | VISIT THREE QUESTIONS

Here’s who has been interviewed since the last RESO Monthly:

RESO Workgroup Meetings

Research & Development Workgroup | March 2, 2023
The meeting included approval of the Simplified Business Case Form and sending the NAR Safety Field Recommendation and Agent/Office Biographical Information cases to the Data Dictionary Workgroup. The business cases for Payload Filter on Certification Pages and Smart Home Standards were discussed and remain active. Also, a subgroup is analyzing the definitions of Standard Statuses, and additional members may volunteer by making a comment on the Standard Status Definitions post in Confluence. | NOTES

Interoperability Workgroup | March 14, 2023
The meeting included discussion about the recently submitted Payload Filter on Certification Pages business case; the differences between data feeds such as IDX, VOW and Broker Back Office (BBO); and the topics the workgroup may cover at the upcoming RESO Spring Conference. | NOTES

Internet Tracking | March 15, 2023
The meeting included a presentation of lead tracking and management by the founder of PortfolioBay. The group discussed and agreed to move forward with changing the names of several summary fields in the Tracking Fields 2.0.10 Specification. Additionally, there was a privacy update, including discussion of a proposed legislative bill that may pave the way for banning foreign app surveillance in the U.S. | NOTES

Data Dictionary Workgroup | March 16, 2023
Defining multiple uses in a single dataset, with four main cases described and a recommendation given, was the primary topic of the discussion. A potential new field called ImageContains was introduced along with two options for its lookup values, which are still to be decided. The Co-Ownership (Fractional) lookup placement under the PropertyType vs. PropertySubType field was discussed and will be covered further in upcoming meetings. Lithium Ion Battery, Lead Acid Battery, Lithium Iron Phosphate, Other and Unknown were approved as lookup options under the new PowerStorageType field. | NOTES

Universal Property Identifier (UPI) | March 22, 2023
The workgroup continued discussion on the County Metadata Proposal, which is a proposed resource to explain which county identifiers were used to create UPIs in situations where additional information beyond the APN was used. A spreadsheet showing these identifiers from all counties in the U.S. was also presented. The group revisited APN duplication issues caused by the removal of formatting characters and the options to address them. Additionally, the Uniform Resource Name (URN) Namespace, secured by RESO, was discussed as a way to improve the next version of the UPI. | NOTES

Distributed Ledger | March 28, 2023
The meeting included guests from WishKnish, who spoke about their data model in relation to concepts covered in the workgroup. The group decided to discontinue work on the Listings on Blockchain and User-Defined Terms-of-Use and Tracking business cases as they currently exist and instead create new cases with the general goal of improving replication using ledgers. Several RESO Change Proposals (RCPs) and their potential impact on the work of the Distributed Ledger Workgroup were also discussed. | NOTES

Upcoming RESO Workgroup Meetings

If you want to participate in any of the following recurring workgroup or subgroup meetings, you can write to to get started. In-person or livestream attendance at the 2023 RESO Spring Conference is required for several of this month’s meetings.


  • Tuesday, April 18: Data Dictionary Workgroup (2023 RESO Spring Conference)
  • Tuesday, April 18: Transport Workgroup & Certification Subgroup (2023 RESO Spring Conference)
  • Wednesday, April 19: Broker Advisory Workgroup (2023 RESO Spring Conference)
  • Wednesday, April 19: Research & Development Workgroup (2023 RESO Spring Conference)
  • Wednesday, April 19: Interoperability Workgroup (2023 RESO Spring Conference)
  • Wednesday, April 19: Universal Property Identifier (UPI) Workgroup (2023 RESO Spring Conference)
  • Wednesday, April 19: Distributed Ledger Workgroup (2023 RESO Spring Conference)
  • Thursday, April 20: Certification Analytics Subgroup (2023 RESO Spring Conference)
  • Thursday, April 20: Data Consumers Subgroup (2023 RESO Spring Conference)
  • Thursday, April 27: Rental Subgroup
  • Monday, May 1: Transport Workgroup
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