Press Release

REBNY’s Residential Listing Service Completes Data Migration to Help Accelerate Product Innovations for Agents and Consumers


January 21, 2024

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NEW YORK, NY– The Real Estate Board of New York (REBNY) today announced it has completed the migration of its Residential Listing Service (RLS) to the Real Estate Standards Organization Web Application Programming Interface (RESO Web API). This comprehensive modernization will allow RLS data to move more quickly and efficiently between REBNY’s 581 residential brokerage member firms and over 12,000 agents.

RESO is an independent, nonprofit standards body formed to develop data standards and processes that create efficiencies for all participants in real estate transactions.

Benefits of the RESO Web API migration include:

  • RESO Web API follows well-known, open technology standards that enable greater professional and consumer access from the web, mobile, social and other HTTP-based applications.

  • REBNY members who utilize the RLS will now

    experience efficient technology implementations as their listings utilize the RESO data dictionary that speaks the same language as all technology providers who utilize the RESO standard.

  • With modern, centralized data language agents will be able to better label and map their listings with technology providers, improving the agent listing and consumer search experience.

  • RLS Data can now be consumed globally and internationally by a wider range of users because RESO standards support delivering real estate data in any language and even multiple languages within the same locale.

The transition to RESO Web API add/edit required a meticulous migration process with multiple front-end providers updating their systems and data feeds without interruption or impacting any of the technology and day-to-day operations of REBNY’s members and data vendors. This was the last step before REBNY deprecated its RETS servers. REBNY has been previously awarded the RESO Leading Edge Award for Adoption for migration to RESO Web API SEARCH.

The project was overseen by REBNY’s Senior Vice President of Residential Brokerage Services & Products Ninve James, who is also the co-chair of RESO’s building sub-group, working closely with Director of Operations Miah Yoo.

REBNY is dedicated to providing its members the best resources possible to make their day-to-day technology utilization easier. As a result, this improves the experience for all New York real estate consumers,” said Ninve James. “With this transition, REBNY members will be able to stay ahead of the game when it comes to data standards.”

“Previously, RLS data came from multiple sources speaking different languages that made it more challenging for members and vendors to consume and utilize,” noted Miah Yoo. “We had to work with over 100 different technology providers to migrate to one standard, RESO, which will now allow users to leverage the RLS across more than 1,000 data connections.”

The speed and depth of REBNY's marketplace conversion to RESO standards is truly remarkable,” said Sam DeBord, CEO of RESO. “REBNY's work is proof that RESO Web API and Add/Edit are ready to streamline and accelerate even the largest real estate technology markets in the world. The industry's MLSs, brokers, and consumers will all benefit from this trailblazing work by REBNY."

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The Real Estate Board of New York (REBNY) is the City’s leading real estate trade association. Founded in 1896, REBNY represents commercial, residential, and institutional property owners, builders, managers, investors, brokers, and salespeople; banks, financial service companies, utilities, attorneys, architects, and contractors; corporations, co-partnerships, and individuals professionally interested in New York City real estate. REBNY conducts research on various civic matters including tax policy, city planning and zoning, rental conditions, land use policy, building codes, and other city, state, and federal legislation. REBNY regularly publishes market data, policy reports, and broker surveys. In addition, REBNY provides for its members: informational, technical, and technological resources; networking and charitable service opportunities; qualifying and continuing education courses; professional education programs, seminars, and designations; career-changing awards; legal advice; and a wide range of additional member benefits. For more information, please visit


Chris Santarelli

(212) 616-5249

Topics Covered

  • Residential
  • Technology