PROGRESS: The story of the MLS (no, it's not Major League Soccer)

Most good stories begin with “Once upon a time” and the story of the Multiple Listing Service is no different.

Once upon a time, MLS data was distributed in printed books that were not updated regularly - sometimes it was weekly, sometimes monthly. Many brokers and agents remember a time when they had to walk around town to each brokerage to share listings that had just come on the market, pick up a key in order to show clients the property, or inquire about listings that had gone pending or closed.  It was a daunting task that our members undertook in order to serve their clients.  Boy, have times changed.

While revolutionary for their time, these printed listings quickly became outdated in fast-moving markets. The limitations of print led to the gradual adoption of digital solutions in the latter half of the 20th century. By the 1970s and 1980s, MLS systems began transitioning to computer-based platforms, allowing brokers and agents to access and update listings more efficiently. This shift marked a turning point, as real estate professionals could now rely on more timely and accurate information.

The Multiple Listing Service (MLS) has undergone a remarkable transformation from a simple cooperative tool among real estate brokers to a sophisticated, technology-driven platform that supports modern real estate markets. Its evolution reflects extensive changes in technology, regulation, and consumer expectations, making it an integral part of the real estate industry.

The origins of the MLS date back to the late 19th century, when real estate brokers would gather informally to share information about properties they were trying to sell. These meetings were built on the principle of cooperation: brokers agreed to compensate one another for helping to find buyers. This system increased efficiency by expanding the pool of available properties and potential buyers, ultimately benefiting both agents and clients. Over time, these informal arrangements became more structured, giving rise to the first organized MLS systems in the early 20th century. 

The rise of the internet in the 1990s further accelerated the evolution of the MLS. Online databases made it possible to share listings not only among agents but also, eventually, with the public. Brokerage websites began displaying MLS data, giving buyers unprecedented access to property information. This increased transparency, which fundamentally changed the role of real estate agents, who now had to provide added value beyond simply controlling access to listings.

MLSs provide the foundation of information millions of people depend on to make decisions in today’s real estate market.  The vast majority of home sales happen by real estate brokers and agents working together on MLSs, not because of portals, websites or other means.  (Don’t rely on a “Zestimate”, contact a local professional for accurate MLS information on listings.) 

In the 21st century, MLS systems have become highly advanced, integrating features such as high-resolution images, virtual or 3-D tours, mapping tools, and real-time updates. Mobile technology has made MLS access commonplace, enabling agents to retrieve and update information from anywhere. Additionally, data standardization efforts and regulatory oversight have improved the consistency and reliability of MLS information across regions.

More recently, the MLS has been influenced by the rise of big data and artificial intelligence (AI). Modern platforms can analyze user behavior, market trends, and pricing patterns to offer insights that help agents and consumers make more informed decisions. At the same time, debates about data ownership, transparency, and competition have prompted ongoing legal and regulatory scrutiny, shaping how MLS systems operate and evolve.  The MLS safeguards market information and enforces rules and regulations that govern participation.  This allows real estate brokers and agents to do their jobs with confidence.

Today, the MLS remains a cornerstone of the real estate industry, balancing its original spirit of cooperation among brokerages with the demands of a digital, consumer-driven marketplace with a dynamic community of professionals working together to create a healthy, efficient marketplace. Its journey from handwritten notes to intelligent, data-rich platforms which highlight not only technological progress but also the enduring importance of collaboration in real estate.

Stephanie Rief is the association executive for the Selkirk Association of Realtors.