What is the MLS (Multiple Listing Service)
The MLS (Multiple Listing Service) is a database of properties for sale maintained by local real estate associations — allowing participating agents and brokers to share listing information and cooperate on transactions.
The Multiple Listing Service (MLS) is a shared database used by real estate agents and brokers to list properties for sale, search available inventory, and coordinate transactions. When a home is listed "on the MLS," it becomes accessible to all participating agents in that region — dramatically increasing the property's exposure to potential buyers.
There is no single national MLS. Instead, there are over 500 regional and local MLS organizations across the United States, each governed by a local Realtor® association. Major consumer portals like Zillow, Realtor.com, and Redfin pull listing data primarily from these MLS databases.
How the MLS Works
When a homeowner signs a listing agreement with a real estate agent, the agent typically enters the property into the local MLS within 24–72 hours (specific rules vary by MLS). The listing includes:
- Property address and description
- Photos, virtual tour links
- Price, square footage, bedrooms/bathrooms
- Year built, lot size, parking
- HOA fees (if applicable)
- Days on market
- Showing instructions
- Compensation offered to buyer's agents
Other agents in the MLS can then search the listing, show it to their buyers, and submit offers on behalf of their clients.
Why the MLS Matters to Buyers and Sellers
For Sellers
Listing on the MLS maximizes exposure. The more agents who can see and show your property, the greater the competition among buyers — which translates to better offers and less time on market. Properties marketed exclusively outside the MLS (off-market deals, pocket listings) reach fewer buyers and often sell for less.
For Buyers
The MLS is the most comprehensive source of real estate inventory. When your agent searches properties, they are drawing from MLS data. Consumer websites like Zillow receive MLS feeds but may lag by 24–48 hours or contain incomplete data. Working directly with a licensed agent gives you access to the most current, complete information.
MLS Access and Realtor Membership
Access to the MLS is typically restricted to licensed real estate agents who are members of their local Realtor® association and pay annual membership dues. Consumers cannot access the full MLS directly — they see a filtered public view through portals or through their agent.
New Rules Around Buyer's Agent Compensation (2024–2025 Changes)
Following the National Association of Realtors (NAR) settlement in 2024, major changes came to how buyer's agent compensation is handled on the MLS. Sellers are no longer required to offer buyer's agent compensation through the MLS, and agents must have written buyer representation agreements before showing homes. These changes have made the compensation structure more transparent but also more complex for buyers to navigate — making it important to negotiate your buyer's agent agreement clearly before beginning a home search.
Off-Market Listings vs. MLS Listings
Some sellers choose to market their homes off-market — meaning the property isn't listed in the MLS. This can happen through:
- Pocket listings — sold through an agent's personal network before hitting the MLS
- For sale by owner (FSBO) — seller markets directly, typically on sites like Zillow as FSBO or Craigslist
- Coming soon listings — pre-marketed within the MLS system before going fully active
Off-market listings can appeal to sellers who want privacy or a faster, simpler process — but they typically reach a narrower pool of buyers. For most sellers, the MLS remains the best tool for maximizing sale price.