Snake River Multiple Listing Service (MLS)

If you are buying or selling real estate in Eastern or Southeast Idaho, nearly every listing you see, every home your agent shows you, and many of the market statistics you hear about originate from one core system: the Snake River Multiple Listing Service, commonly known as the Snake River MLS.

This page explains what the Snake River MLS is, how it works, how it is governed, and how it connects to national and state REALTOR® organizations, as well as the technology systems—IDX and RETS—that power real estate websites like Two70.com.

What Is the Snake River Multiple Listing Service?

The Snake River MLS is a private, professional database used by licensed real estate brokers and agents to share standardized, detailed information about properties for sale throughout Eastern and Southeast Idaho.

It is the source of record for listing data, including pricing, status changes, property facts, photos, disclosures, listing history, and sold information. MLS rules require accuracy and timely updates, and violations are typically handled through compliance processes.

Who Governs the Snake River MLS?

The Snake River MLS operates within a larger professional structure that connects local agents to state and national real estate organizations. Each part has a different role:

National Association of Realtors (NAR)
Establishes national policy, ethical standards, and many of the baseline MLS cooperation rules.
Idaho Realtors
Supports Idaho REALTORS® and helps align national policy with Idaho law, licensing, and state-level practices.
Upper Valley Association of Realtors (UVAR)
Represents local REALTORS® and supports professional standards and education in the region.
Snake River MLS
Operates the listing database, enforces its rules, and distributes authorized listing data.

In simple terms: NAR sets the national framework, Idaho Realtors provides statewide alignment and support, UVAR supports local professionals, and the Snake River MLS runs the system that makes listing data function day to day.

Why the MLS Is Not the Same as Zillow or Other Public Websites

Public real estate websites do not create listings—they receive them. The MLS is the original source of record for participating brokers and agents.

Because of this, the MLS typically:

Updates first when prices or statuses change
Contains standardized fields used for pricing and comparisons
Maintains listing history and transaction status changes
Follows rules intended to improve accuracy and consistency

Third-party websites may show delayed updates, omit fields, or display information differently depending on their data feed and display choices. This is especially important in Idaho, which is a non-disclosure state.

How IDX Displays MLS Listings Online

IDX (Internet Data Exchange) is the system that allows MLS listings to be displayed on brokerage and agent websites, subject to MLS rules and approvals.

When you view homes on Two70.com, you are seeing MLS data delivered through IDX under the MLS’s display requirements.

Learn more here: How Syndication IDX Works

IDX helps ensure that:

Listings displayed online reflect current MLS pricing and status as updates are delivered
Only authorized participants can display MLS listings
Broker attribution and consumer-facing display rules are followed

How RETS Servers Move MLS Data Behind the Scenes

RETS (Real Estate Transaction Standard) is a data transport standard historically used by MLS systems to securely deliver large volumes of listing data to authorized users and vendors.

Many MLSs now use modern APIs, but RETS has been foundational for how listing data has been shared for:

Brokerage websites and tools
Market reporting and analytics
Back-office brokerage systems

Learn more here: What RETS Servers Do

How Buyers and Sellers Benefit From the Snake River MLS

For buyers, the MLS provides broad market visibility, accurate availability, and reliable comparable sales data to support pricing and offer strategy.

For sellers, the MLS is the primary marketing engine that distributes listings to participating agents and powers many consumer-facing search platforms through authorized data feeds.

How a listing is structured inside the MLS—pricing, remarks, data fields, photos, and timing—can directly affect buyer perception and outcomes.

Frequently Asked Questions About the MLS

Is the MLS the same as Zillow?

No. Zillow and similar websites typically receive listing data from MLS feeds (directly or indirectly). The MLS is the original source used by participating brokers and agents and usually updates first.

Why do some homes appear online but not on every website?

Not all websites display the same fields, and some listings may have limits on internet display. Different platforms also refresh data on different schedules, which can cause timing differences.

Why can’t I see sold prices for every home in Idaho?

Idaho is a non-disclosure state. Sold information may be available for professional use inside MLS systems and other sources, but it is not always publicly displayed or consistently available across platforms.

Who controls what can be listed in the MLS?

MLS participation and listing rules are influenced by national standards (through NAR policy), state organizations, and local associations, and enforced by the MLS based on its governing rules and compliance process.

Can anyone list a home in the MLS?

No. Only licensed real estate professionals who are MLS participants (through their brokerage) can enter listings into the MLS.

Next Step

If you want help interpreting MLS data, understanding market trends, or comparing what you see online to what is happening locally, a knowledgeable Southeast Idaho agent can help you make decisions with fewer surprises.

Connect with a Real Estate Two70 agent