What Is a Multiple Listing Service (MLS)?

What Is a Multiple Listing Service (MLS)?

What is a multiple listing service (MLS)?

A multiple listing service, or MLS, is a shared database where real estate agents post properties for sale and make them visible to other agents and, often, to public portals. It is the industry’s common source of truth for what is on the market.

DefinitionA shared listings database

Agents post properties for sale and make them visible to other agents and, often, to public portals.

The ideaCooperation

Pooling listings gives every property wider exposure and every buyer a fuller view of the market.

DownstreamPublic property portals

Much of what you see on public property portals traces back to an MLS feed.

Why it mattersListing data quality

Accurate, well structured listing data matters because portals draw on the feed.

The idea is cooperation. By pooling listings, agents give every property wider exposure and every buyer a fuller view of the market than any single agent could offer alone.

Figure 1. Where MLS listings go

Listing agents post properties to the MLS; member agents see the pooled listings, and much of the data flows out to public portals used by buyers and rentersListing agentspost propertiesMLSShared databaseof pooled listingsMember agentssee the listingsPublic portalsused by buyersand renters

How listings move, as this article describes it: agents post properties to the MLS, member agents see the pooled listings, and much of the data flows out to public portals that buyers and renters use. Structure only.

Much of what you see on public property portals traces back to an MLS feed, which is why accurate, well structured listing data matters so much.

Sthenos builds real estate platforms that handle listing data at scale, like a property listing portal for a leading real estate company.

Is an MLS open to the public?

Access is mainly for member agents, but much of the data flows out to public listing portals that buyers and renters use.

Member agents

Direct access
  • Post properties for sale
  • See listings from other agents

Buyers and renters

Mainly through portals
  • Much of the data flows out to public listing portals
  • Those portals are what buyers and renters use

Related reading

Related terms:

Property listing portalA website or app where buyers and renters search available properties and connect with the agents or sellers behind them.
PropTechShort for property technology: the use of software and data to improve how people buy, sell, rent, manage, and invest in real estate.

Industry: Real Estate. Service: Custom Software Development Company.

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