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It’s a short work week for most people, but that doesn’t mean we’re going short on content. We welcome a new member, further explain RESO’s updated standards and certification process, promote our Board of Directors election, share the impressively visualized Internet Tracking Summary Fields paper, announce the acquisition of one member by another, and, as always, pass along the freshest notes from the most recent workgroup meetings.

Have a safe and happy (and did we mention safe?) holiday weekend!


New Members

We would like to welcome Green Building Registry by Earth Advantage into the RESO fold. We look forward to seeing more of you.


RESO Approves Updated Standards, Opens for Certification – The Blog Post

Last week, RESO put out an official news release about our updated technical specifications for RESO Dictionary 1.7 and RESO Web API 1.0.2 Core, effective November 10, 2020.

Multiple listing services (MLSs), technology companies and real estate brokerages can now be certified on these updated standards.

Certifications for both Data Dictionary and Web API will be granted simultaneously to an MLS upon passage of a Data Dictionary implementation via an MLS’s certified Web API server.


We also published a blog post on the same topic with a few more technical details for RESO insiders. | READ MORE




RESO Web API and Native Data Dictionary MLS Systems: Stages of Standardization

The RESO Web API is the modern way that MLSs transport data to their brokers and their vendors. Many MLSs have non-standardized data in their internal “native” databases. That data is mapped, or matched, to RESO’s Data Dictionary standards and delivered to customers via the MLS’s Web API services.

Standardized data is what technology companies and brokers are asking for from their MLSs. They want to build technology that works across many markets efficiently and quickly. So a RESO-certified Web API is the way these MLSs can provide a “cleaned up” layer of data over top of their native systems. | READ MORE


2021 RESO Board of Directors Nominations

Voting is now open for the nominees to the RESO Board of Directors. The RESO board is responsible for the governance of RESO and development of the organization’s strategic plan. All candidates for the board are representative of a RESO member organization.


Open Seats in This Election:
One (1) Class B (Technology Companies, Developers, Partners & Consultants) with revenue over $25 million annually.
Two (2) Class C (MLSs and REALTOR® Associations) with fewer than 50,000 subscribers.
Two (2) Class D (Real Estate Brokerages, Brokers, Agents & Appraisers) any tier.

Election Timeline:
December 2, 2020 – Voting Closes
December 7, 2020 – Results Announced


If you have any questions, please contact


RESO Internet Tracking Summary Fields Paper is Approved


The RESO Internet Tracking resource has added Summary Fields (approved for Data Dictionary 1.8). These fields are one-to-one tracking totals and not the record-by-record tracking data published in Data Dictionary 1.6.

The summary fields are the SUM of specific tracking events over a period of time (listings viewed, shared, etc.). They act as a basic template that should be provided from real estate data applications and services. | VIEW PAPER


Two RESO Members Set to Become One

Two influential RESO members are joining forces in the real estate data space. Congratulations to everyone involved!

CoStar Group has agreed to acquire Homesnap. CoStar Group provides commercial real estate information, analytics and online marketplaces. Homesnap is an online and mobile software platform that provides applications for residential real estate agent workflow and agent-client relationships.

“The acquisition of Homesnap will enable us to enter a new space and expand the total addressable markets in which we can compete,” said CoStar Group founder and CEO, Andy Florance in a statement. | READ MORE


RESO Committees and Workgroups

Note: Most links to workgroup information require member login to RESO’s online collaboration environment, Confluence.

Unique Licensee Identifier (ULI) Subgroup Meeting | November 13, 2020

Meeting Summary: The group spent the bulk of the meeting on an important deep dive into the possibility and feasibility of adding a Resolver implementation to the data pilot and the need for a documented workflow for Create, Update and Delete actions for participants in the Resolver network and any other significant events that might occur. | VIEW CALL NOTES

Action Items

  • Determine the best path forward with business rules in order to begin working on a more concrete workflow beyond the theoretical.
  • If we are going to use a semi-centralized approach, we need to create an accurate workflow diagram for the Resolver network.

Internet Tracking Workgroup Meeting | November 18, 2020

Meeting Summary: After a brief review of the agenda and workgroup activities during the RESO Remote Encore fall conference, the group spent the majority of the meeting discussing lead-related metrics and how well the Internet Tracking spec absorbs this data flow. The group wants to add a lead-related Summary Field. | VIEW CALL NOTES

Action Items

  • Refine the answers to the questions posed during the Leads Metrics discussion, perhaps in the Internet Tracking Discussions Forum.
  • Promote the Internet Tracking Summary Fields paper.



Workgroup Meetings This Week

  • November 24: Payloads