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Newsletter Summary
- Be a speaker at the RESO 2025 Fall Conference
- International MLS Forum agenda announced
- Working with Real Estate Data – Canada (RED-CA) course launches!
- RESO Common Format (RCF) keeps broker data accurate and consistent
Submit Your Starring Turn at the 2025 RESO Fall Conference
Are you prepared to step into the spotlight in Louisville this fall? Bring your big idea, unique use case or data-driven success story to the RESO Fall Conference stage, October 21–23.
The deadline is August 31 for submitting a timely session topic that is related to RESO standards from a unique MLS, brokerage, association or technology angle.
RESO speakers and moderators for conference sessions and roundtables make our events engaging for attendees. These are unpaid speakers delivering valuable information sessions, not advertisements.
RESO 2025 Fall Conference: Register, Sponsor, Receive a Grant
The brightest minds in proptech will be at the 2025 RESO Fall Conference, October 21–23, in Louisville. Be a part of meaningful connections and onsite innovation – with a dash of Kentucky flair. Prices increase on September 1, so secure your spot today! | VISIT CONFERENCE SITE & REGISTER
Our room block at Omni Louisville Hotel will sell out, so please book your room after you register.
Sponsorship opportunities are still available. Contact advertising@reso.org.
RPR Connections Grant
The deadline for application to the Realtors Property Resource® (RPR) Connections Grant in memory of RESO champion, Kristen Carr, is Friday, August 8. RPR will cover the registration cost for four RESO members who have never attended a RESO conference. | LEARN MORE | APPLY NOW
Intentionally International
The 3rd Annual International MLS Forum is almost here. This growing global event is taking place at the Westin Harbour Castle in Toronto, September 25–26, directly after the Council of Multiple Listing Services (CMLS) conference. | REGISTER
RESO and its industry partners are excited to announce that the agenda and first slate of speakers have been posted. | READ MORE
RESO’s Working with Real Estate Data
New course now available! Working with Real Estate Data – Canada (RED-CA)
We are pleased to announce the official launch on August 1 of RED-CA, a customized version of the Working with Real Estate – Business course and RED-B designation. The course was developed by RESO in partnership with the Canadian Real Estate Association (CREA) to describe the stakeholders and processes in the Canadian marketplace.
Working with Real Estate Data courses provide a go-to starting point for understanding how real estate data really works and why RESO standards matter across the industry.
See how data flows from system to system- Perfect for MLS staff, brokers, tech teams and vendors
- Self-paced, beginner-friendly and completely online
Start learning today and stay ahead of the curve!
RED-B Raffle Winner
The winner of the RED-B raffle is Derek Champagne from Prime MLS! Derek has won a $100 Amazon gift card and exclusive RESO swag!
Product Updates
Workgroups have begun virtual (online) voting. See the RESO Workgroup Topics and Virtual Voting page, linked from the RESO Confluence homepage.
Data Dictionary
The following items were approved in the first official Data Dictionary virtual vote.
CurrencyType Field (String List, Single)
- Indicates the currency for the monetary values on the record, as input
- Lookup values populated from the ISO 4217 currency codes (e.g., USD for U.S. Dollar, CAD for Canadian Dollar, EUR for Euro)
Additional Living Quarters Proposal
- A data shape of fields and lookups to communicate information about additional or secondary living quarters/areas on a property
- Shape will be available in a later Data Dictionary version
- DisasterReliefAvailable (String List, Single)
- Indicates whether disaster relief assistance is available for the property (e.g., Yes, No, Conditional); may include financial aid, government programs, insurance accommodations or other forms of relief related to declared disaster events
- DisasterReliefRemarks (String)
- Provides additional details or context regarding disaster relief assistance available for the property
- DelayedMarketingYN (Boolean)
- Indicates whether the property is subject to delayed marketing, meaning it will not be actively marketed or publicly advertised until a specified future date
- DelayedMarketingDate (Date)
- Indicates the date when marketing will begin
- A residential building that shares one common wall with another unit, forming one half of a duplex structure
- Added as a new lookup under the PropertySubType field.
A new vote with items from the July 17 meeting is available on the RESO Workgroup Topics and Virtual Voting page, available until August 11.
Leveraging RESO Common Format (RCF) to Create a Broker Data Standard
RESO Common Format (RCF) empowers brokerages and their website vendors, CRM providers, lead generation portals and back office tools to all talk to each other with data packaged in a simple, well-organized format. It keeps the broker’s data accurate and consistent across systems.
The Broker Advisory Workgroup recently discussed a proposal for Creating a Brokerage Data Standard that outlined the benefits and next steps for getting participation from broker and technology practitioners.
The proposal can leverage RCF to ensure that data remains standardized as it moves across various systems. The business value of the RCF is straightforward. Much like we expect our mail system to use orderly addresses: name, number, street address, city, state/province and postal code, RCF shows how to organize property data for easy readability by any technology system.
Brokerages and brokerage vendors can now become certified by RESO, and several companies have already hopped aboard, including:
- AgentBook
- Constellation HomeBuilder Systems
- Earth Advantage
- FBS
- Municipal Property Assessment Corporation (MPAC)
- Pearl Certification
- planetRE
- Planitar (iGUIDE)
Contact dev@reso.org to find out how to join this list. | LEARN MORE
RESO Summer Camp Recap
This year’s real estate data survival skills included sessions on RESO’s Working with Real Estate Data courses, Analytics & Alignment Reports and the Data Dictionary. We were once again thrilled by the turnout of many new members. Thank you to volunteer leaders like Rob Larson, John Breault and others for contributing to these educational sessions.
Certification Update
The following organizations recently achieved Data Dictionary 2.0 certification:
- California Desert Association of REALTORS®
- Daytona Beach Area Association of REALTORS®
- Flint Hills Association of REALTORS®
- Greater El Paso Association of REALTORS®
- Maine Listings
- Martha’s Vineyard MLS
- Metro Search (Greater Louisville Association of REALTORS®)
- Tulare County MLS
View results in RESO Analytics or see the RESO Certification Statuses & Map for all MLSs. Contact your vendor for certification questions and dev@reso.org for technical questions.
RESO@
Blueprint
From September 16 to 18, RESO returns to Las Vegas for Blueprint, a large, global gathering of industry innovators leading the charge in changing the built world – from construction to management to transaction – for three days of networking, learning and ecosystem advancement. The future of the built world takes shape at the Venetian, and you can join us at a $300 discount. | REGISTER
CMLS Open House
CMLS Open House takes place September 23–25 in Toronto right before the International MLS Forum, September 25–26. CMLS is a terrific industry partner, and we encourage all RESO members to join us for all four days in Toronto!
New Members
EasyDigz
EasyDigz combines traditional real estate services with iBuyer speed and efficiency, providing clients with problem-solving agents for a seamless experience on a flat fee structure that combines the human touch of traditional brokers with the benefits of technology.
HMS
HMS serves builders and developers with a focus on new construction, providing specialized MLS, listing, marketing and strategic services for builders across the country.
Welcome to RESO!
Recent and Upcoming RESO Workgroup Meetings
Members can review workgroup agendas in the RESO Workgroup Collaboration System. | JOIN A WORKGROUP
Global Subgroup | July, 2, 2025
The group went over location, property subtype/architectural style, utilities and construction materials fields that may be underrepresented in the Data Dictionary for international use. More action items were identified, including leveraging aggregate data and engaging with international RESO membership organizations for further guidance on what may be needed in the Data Dictionary. | NOTES
Transport Workgroup | July 7, 2025
The group discussed additional versioning and certification policies, outlined in the meeting agenda, and opened the virtual voting period. | NOTES
Interoperability Workgroup | July 8, 2025
The workgroup was given updates from the ActivityPub Subgroup, which is exploring the protocol to support the RESO Unique Licensee Identifier (ULI), specifically to implement a ULI Resolution Protocol. The group discussed how ActivityPub could streamline listing advertisement workflows, reducing the need for custom integrations across fragmented systems (e.g., MLS, showings, offers). Additionally, emerging interoperability use cases were discussed, including the Model Context Protocol (MCP) for communication between AI bots and a potential Search Engine Optimization (SEO) data payload to standardize how listing data is presented to search engines, offering a more structured alternative to web scraping. | NOTES
Research & Development Workgroup | July 10, 2025
The group explored the need for standard fields to manage AI permissions on listings, including whether listings can be used for training models or enhanced with AI tools. There was also discussion around creating standardized fields for disaster risk and mitigation, such as fire or flood preparedness, and the potential use of existing standards like FEMA’s. Additional topics included the challenge of records being deleted from data feeds, where awareness of EntityEvent Resource and Replication Model (RCP-27) could help, and the use of the ActivityPub protocol to support broadcasting and confirming ULIs. | NOTES
Fast Track Subgroup | July 15, 2025
The group reviewed the Fast Track Suggestions sheet and made decisions on several mapping suggestions, mostly for lookups of the PropertySubType and ArchitecturalStyle fields. Additionally, recommendations were made to strengthen the definitions of the Berm ArchitecturalStyle, BusinessType field and its lookups. | NOTES
Data Dictionary Workgroup | July 17, 2025
The group discussed the proposal to communicate EU Energy Performance Certificates (EPC) information and decided to hold a separate meeting with subject matter experts to streamline it. The revised High Speed Internet Fields proposal will be moved to a vote. The Geocode Fields Request was revised to include a GeocodeDoNotAlterYN field and will be moved to a vote. Inconsistencies were highlighted on how bathrooms are represented across MLSs in a discussion about the Ambiguity and the Bathrooms Pyramid, prompting the formation of a project group to create a recommendation for standardizing bathroom fields. Additionally, motions were made to vote on adding AMS and OM payload tags to the Data Dictionary as informational labels and to add webp as a new lookup under MediaType. All motions will be voted on virtually. | NOTES
Certification Subgroup | July 17, 2025
The group concluded that providers using standard names defined as expansions, such as Media, needed to follow their Data Dictionary definitions, which have a SourceResource field in the specification indicating which resource is being expanded and whether something is expanded as a collection or singular item. It was also determined that the definition of ModificationTimestamp needed clarification to ensure it was being updated consistently to make it reliable for replication, rather than requiring consumers to use other nonstandard timestamp fields. | NOTES
Broker Advisory Workgroup | July 24, 2025
The group discussed a proposal for Creating a Brokerage Data Standard, which outlined the benefits and next steps for getting participation from broker and technology practitioners. It was determined that the proposal could leverage RESO Common Format (RCF) to ensure that data remains standardized as it moves across various systems. Additionally, the group discussed the need to standardize how disaster risk, disclosures and mitigation efforts are communicated, while considering seller reluctance to make that information easily accessible. | NOTES
Duplication Subgroup | July 24, 2025
The group reviewed items from the Data Dictionary Duplication sheet, which shows potential duplicate data elements in the Data Dictionary. Duplicate Types were assigned to several lookups, and recommendations for the Data Dictionary Workgroup were recorded for several lookups. | NOTES
Global Subgroup | Wednesday, July 30, 2025 | AGENDA
ActivityPub Subgroup | August 1, 2025
The group approved a motion to implement a consensus mechanism for creating a Unique Licensee Identifier (ULI), as well as a motion to define the consensus as the floor of two-thirds of the total number of resolvers. The Interoperability Workgroup was given the tasks of developing Offer Management (OM) workflow diagrams and determining the level of public visibility of offers. Additionally, two resources were given to the group to review before the next meeting. | NOTES
Transport Workgroup | Monday, August 4, 2025 | AGENDA
Interoperability Workgroup | Tuesday, August 12, 2025
Fast Track Subgroup | Tuesday, August 19, 2025
Data Dictionary Workgroup | Thursday, August 21, 2025
Certification Subgroup | Thursday, August 21, 2025
Global Subgroup | Wednesday, August 27, 2025
Duplication Subgroup | Thursday, August 28, 2025
Transport Workgroup | Monday, September 1, 2025
