Real Estate Standards Organization
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.
- Company typePrivate
- Founded2015
- HeadquartersRaleigh, United States
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
Real Estate Standards Organization firmographics
Firmographics- 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
Real Estate Standards Organization industry classification
Industry- 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
Where Real Estate Standards Organization is headquartered
LocationHeadquarters
- HQ city
- Raleigh
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Real Estate Standards Organization business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales
Revenue model
- 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.
- Conference Registration: Revenue from semi-annual Spring and Fall conferences. Members receive discounted pricing ($800) vs non-members ($1,100). Also includes livestream options.
- RED Education Courses: Revenue from Working with Real Estate Data (RED) courses including RED-B and RED-CA designations, offered at member pricing.
- RESO Alignment Reports: Industry Alignment Reports are free to members; Provider Alignment Reports and Market Alignment Reports are sold for premium pricing.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | RESO Membership |
| Unit Pricing | Event-based | Conference Registration - Members |
| Unit Pricing | Event-based | Conference Registration - Non-members |
| Subscription | Per course | RED-B Course - Members |
| Subscription | Annual | Industry Alignment Reports - Members |
| Subscription | Annual | Provider and Market Alignment Reports |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels8 records
Real Estate Standards Organization product offering
Product offeringCore 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
Companies that use Real Estate Standards Organization
Customer profileNamed customers14 records
Segments5 records
Ideal customer profiles4 records
Real Estate Standards Organization technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Real Estate Standards Organization partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered core and minor.
- CEPI (European Association of Real Estate Professions)coreRESO 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)coreRESO 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 GridcoreMLS 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)coreTrestle from Cotality (previously CoreLogic) sponsors RESO Monthly. Trestle provides secure access to the industry's largest dataset and is expanding data resources.
- NAR Global AmbassadorsminorPartner for International MLS Forum, connecting RESO with National Association of REALTORS global initiatives.
- Canadian Real Estate Association (CREA)coreCREA 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)minorInternational partner for the International MLS Forum, representing Abu Dhabi's proptech initiatives and real estate data standardization efforts.
- FIABCI (International Real Estate Federation)minorInternational partner for the International MLS Forum, providing global real estate professional network connections.
- SNPI (Syndicat National des Professionnels Immobiliers)minorFrench real estate professionals association participating in International MLS Forum, representing European MLS expansion for RESO.
- Realtors Property Resource (RPR)coreRPR 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.
- BlueprintminorRESO 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)minorSecond Century Ventures operates REACH, the strategic technology venture arm of NAR, participating in RESO activities and International MLS Forum.
- CoreLogiccoreCoreLogic 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 MLScoreStellar MLS is a major member and strategic partner, providing MLS services. CEO Shayne Fairley serves on the RESO Board.
- ZillowcoreZillow 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
Real Estate Standards Organization competitors and assessment
Company assessmentBroad 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
Real Estate Standards Organization social profiles
Digital presenceReal Estate Standards Organization compliance and trust
Trust signalCompliance6 records
Real Estate Standards Organization financial estimates
Financial estimateRevenue estimate
Valuation estimate
Real Estate Standards Organization leadership team
Management profileNumber of profiles
Profiles9 records
Real Estate Standards Organization funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Real Estate Standards Organization M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Real Estate Standards Organization
What does Real Estate Standards Organization do?
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.
Is Real Estate Standards Organization a public or private company?
Real Estate Standards Organization is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was Real Estate Standards Organization founded?
Real Estate Standards Organization was founded in 2015. It employs 11 to 50 people.
Where is Real Estate Standards Organization based?
Real Estate Standards Organization is headquartered in Raleigh, United States, in the North America region.
How does Real Estate Standards Organization make money?
Four revenue lines are on record. Membership Dues are the primary driver. The others are conference Registration, RED Education Courses and RESO Alignment Reports.
Who are Real Estate Standards Organization's main competitors?
Broad incumbents on record are W3C (World Wide Web Consortium), National Association of REALTORS (NAR), IETF (Internet Engineering Task Force) and GS1. Direct peers are Health Level Seven International (HL7), Open Geospatial Consortium (OGC), Council of Multiple Listing Services (CMLS), MISMO (Mortgage Industry Standards Maintenance Organization) and OASIS Open. Schema.org is listed as an emerging player.
Does Real Estate Standards Organization have an API?
Yes. RESO Web API is a public API standard that enables accurate and effective sharing of real estate data. It includes specifications for Web API Core, Add/Edit functionality, EntityEvent/Webhooks, and Validation Expressions. The API supports data transport between MLSs, technology companies, and brokerages. RESO provides a Web API Developer Reference Server for testing and implementation. Developer documentation is at www.reso.org/reso-web-api.
What industry is Real Estate Standards Organization in?
Real Estate Standards Organization's product category is Real Estate Data Standards. Its primary akta.pro industry code is HDAEACAI, Data Quality, Profiling & Validation (within Integration). Its NAICS code is 5132 and its SIC code is 7370.