Real Estate Standards Organization

Name

Real Estate Standards Organization

Legal name

Real Estate Standards Organization

Website

https://reso.org

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

RESO is a non-profit technology standards association serving the real estate industry, providing data standards (Data Dictionary, Web API, Common Format, unique identifiers) and certification programs. Its 700+ member organizations span MLSs, technology companies, brokerages, and REALTOR associations across 20 countries.

Ownership category

akta.pro rank

Product category

Real Estate Data Standards

NAICS

Software Publishers (5132), Real Estate Property Managers (53131)

SIC

Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Data Quality, Profiling & Validation (within Integration) (HDAEACAI)

Keywords

• Real estate data standards
• MLS interoperability
• Property data exchange
• API certification
• Data dictionary

Headquarters

HQ city

Raleigh

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales

Revenue model

1. Membership Dues: RESO operates as a membership-based organization with annual dues. Members receive complimentary certification, discounted conference pricing, and participation rights in standards development.
2. Conference Registration: Revenue from semi-annual Spring and Fall conferences. Members receive discounted pricing ($800) vs non-members ($1,100). Also includes livestream options.
3. RED Education Courses: Revenue from Working with Real Estate Data (RED) courses including RED-B and RED-CA designations, offered at member pricing.
4. RESO Alignment Reports: Industry Alignment Reports are free to members; Provider Alignment Reports and Market Alignment Reports are sold for premium pricing.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels8 records

Core offering

RESO develops and maintains open data standards for the real estate industry, including the RESO Data Dictionary, RESO Web API, RESO Common Format (RCF), Unique Licensee Identifier (ULI), and Universal Parcel Identifier (UPI). The organization provides certification programs, analytics/reporting tools, and educational courses that enable Multiple Listing Services (MLSs), technology vendors, brokerages, and REALTOR associations to exchange property data consistently and at scale.

Product overview

RESO offers a comprehensive suite of data standards and certification products for the real estate industry. The core offerings include the Data Dictionary (universal real estate data language), RESO Web API (data sharing standard), and RESO Unique Identifiers (for people, properties, organizations). These are complemented by analytics products (RESO Analytics and Alignment Reports), education courses (RED-B, RED-CA, RED-T designations), and the RESO Common Format for broker/vendor data exchange. The portfolio includes certification programs for MLSs, technology companies, and brokerages, plus the Universal Parcel Identifier for global property identification.

Differentiator

Problem solved

Functional benefit

Brands

• RED (Working with Real Estate Data) Courses: Educational courses including RED-B (Business), RED-CA (Canada), and RED-T (Technical) that help professionals understand how data flows through the real estate industry.
• RESO Analytics
• RESO Data Dictionary
• RESO Web API
• RESO Unique Identifiers
• RESO Common Format (RCF)
• ULI (Unique Licensee Identifier)
• UPI (Universal Parcel Identifier)

Products and services

• RESO Data Dictionary The real estate industry's universal language for data standardization, providing standardized field definitions and lookup values that enable consistent data exchange across MLSs, technology providers, and brokerages. Now hosted at dd.reso.org.
• RESO Web API Modern API standard for accurately and effectively sharing real estate data between MLSs, technology providers, and brokerages. Includes Web API Core, Add/Edit functionality, EntityEvent/Webhooks, and Validation Expressions, plus a Developer Reference Server for testing.
• RESO Unique Identifiers

Quantifiable outcome

• 1 Million MLS Subscribers reached through RESO Web API
• +3 more outcomes

Named customers14 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

15 partnerships are on record, tiered core and minor.

• CEPI (European Association of Real Estate Professions)coreStrategic or Co-development Partner · 25 September 2024RESO partners with CEPI to organize the International MLS Forum, bringing global real estate leaders together to shape the future of property data worldwide. The 3rd International MLS Forum was held in Toronto, September 25-26, 2025.
• CMLS (Council of Multiple Listing Services)coreStrategic or Co-development Partner · 23 September 2024RESO and CMLS co-located the 3rd International MLS Forum with CMLS2025 (September 23-25). Discussions were held in 2025-2026 about forming a combined organization, though these concluded without merger in March 2026.
• MLS GridcoreTechnology or IntegrationMLS Grid is a sponsor of RESO Monthly and provides RESO-certified data services. MLS Grid achieved Web API Add/Edit 1.0.0 certification.
• Trestle (Cotality)coreTechnology or IntegrationTrestle from Cotality (previously CoreLogic) sponsors RESO Monthly. Trestle provides secure access to the industry's largest dataset and is expanding data resources.
• NAR Global AmbassadorsminorStrategic or Co-development PartnerPartner for International MLS Forum, connecting RESO with National Association of REALTORS global initiatives.
• Canadian Real Estate Association (CREA)coreStrategic or Co-development PartnerCREA is a partner for the International MLS Forum and key stakeholder in RESO's Canadian initiatives including RED-CA course and Unique Licensee Identifier pilot.
• Abu Dhabi Real Estate Centre (ADREC)minorStrategic or Co-development PartnerInternational partner for the International MLS Forum, representing Abu Dhabi's proptech initiatives and real estate data standardization efforts.
• FIABCI (International Real Estate Federation)minorStrategic or Co-development PartnerInternational partner for the International MLS Forum, providing global real estate professional network connections.
• SNPI (Syndicat National des Professionnels Immobiliers)minorStrategic or Co-development PartnerFrench real estate professionals association participating in International MLS Forum, representing European MLS expansion for RESO.
• Realtors Property Resource (RPR)coreGTM or Marketing PartnerRPR offers the RPR Connections Grant in Memory of Kristen Carr, covering registration costs for first-time RESO conference attendees. RPR is a wholly owned subsidiary of NAR.
• BlueprintminorGTM or Marketing PartnerRESO is an Official Partner of Blueprint proptech conference for the second year. Event held at the Venetian in Las Vegas, September 16-18.
• Second Century Ventures (NAR REACH)minorGTM or Marketing PartnerSecond Century Ventures operates REACH, the strategic technology venture arm of NAR, participating in RESO activities and International MLS Forum.
• CoreLogiccoreTechnology or IntegrationCoreLogic is a key technology partner with significant involvement in RESO workgroups. The company provides data services to the real estate industry and participates in standards development.
• Stellar MLScoreTechnology or IntegrationStellar MLS is a major member and strategic partner, providing MLS services. CEO Shayne Fairley serves on the RESO Board.
• ZillowcoreTechnology or IntegrationZillow is a major technology partner with VP Matt Hendricks serving on the RESO Board. Zillow participates in standards development and certification.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• W3C (World Wide Web Consortium): Foundational web standards organization (now a non-profit under broader stewardship). Compares to RESO in operating model (community workgroups, member-driven specs, conformance programs) though at vastly greater scale and scope.
• National Association of REALTORS (NAR): Trade association governing real estate practitioner standards and ethics in the U.S. Comparable as a member-driven real estate industry organization with significant influence over data policy and MLS practice — broader mandate but overlapping ecosystem and partner relationships (RPR, Second Century Ventures).
• IETF (Internet Engineering Task Force): Open standards body for internet protocols (TCP/IP, HTTP). An older and broader analog to RESO's model of volunteer-led working groups that produce voluntary standards adopted by industry.
• GS1: Global standards body for supply chain and product identification (barcodes, GTIN). Compares to RESO on member-driven identifier standards, multi-country governance, and revenue from membership dues plus value-added services like barcode certification.

Direct peers

• Health Level Seven International (HL7): Healthcare data interchange standards organization with FHIR API, certification, and ANSI-accredited workgroups. Tight analog to RESO Web API/Data Dictionary in a different vertical — non-profit, member-funded, specifications-as-product model.
• Open Geospatial Consortium (OGC): Non-profit international standards body for geospatial interoperability. Compares directly to RESO on member-driven standards development, certification programs (Compliance & Interoperability Testing), and workgroup-based community model — applied to a different domain.
• Council of Multiple Listing Services (CMLS): Trade association for MLSs and real estate listing services. Closest direct peer — historically explored merger with RESO (concluded March 2026), reflecting overlapping memberships, governance, and educational programming for the same MLS customer base.
• MISMO (Mortgage Industry Standards Maintenance Organization): Real estate finance data standards body developing mortgage-related data interchange standards. Closest functional analog to RESO — a non-profit, member-driven industry data standards organization with a similar certification, workgroup, and education model.
• OASIS Open: Non-profit open standards consortium developing specifications across security, cloud, IoT, and other domains. Compares to RESO on governance, workgroup-driven standards, and the consensus-based specification lifecycle.

Emerging players

• Schema.org: Collaborative community project defining structured data vocabularies for the web. Compares to RESO on defining the universal language/schema for a domain — though at the web-content level rather than real estate transactions.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/RESOStandards
• YouTubeyoutube.com/channel/UCxi0atov7GtgR67tqO35vAg
• Facebookfacebook.com/RESOstandards
• LinkedInlinkedin.com/company/real-estate-standards-organization-reso-
• Instagraminstagram.com/resostandards

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Real Estate Standards Organization