IDX, or Internet Data Exchange, is the permission your MLS grants to publish other brokers’ listings on your own website, plus the feed that delivers them. You or your broker hold an MLS membership, the board approves the feed, and listings then appear on your site and refresh automatically. Portals aggregate data from many sources; IDX comes straight from the MLS.
Looking at homes in Canada? Read how IDX works on a Canadian realtor website. It explains the search from a buyer’s side, including why the site may show homes listed by other firms.

What is IDX?
IDX stands for Internet Data Exchange. The complete IDX guide answers the next questions: how IDX puts homes on your website, whether the website you built needs IDX, how IDX affects what Google sees, IDX vs a VOW vs a data feed, and what IDX means when a web designer builds your site.
Why does my website show only my own listings?
Your site may have no wider IDX feed, or a filter may show only your homes. Before you buy anything, check the main search page and ask what your feed may show. Follow the checks for a website showing only your own listings.
How Does IDX Work?
The process is pretty straightforward. Your website establishes a connection with the MLS database. Once connected, the property listings are automatically updated on your site every few hours. This ensures that your audience always has access to the latest information about available properties. This real-time update feature is incredibly helpful. Imagine a potential buyer visits your website and finds a property that meets their needs. They can reach out to you directly for more information, making it easier for you to generate leads and close deals.There are two ways to put that search on your site. An iframe search shows the vendor’s page inside a window on yours, so the homes never sit on your website. Imported listings save each home on your own site as its own page. That one choice decides who gets the Google credit, what you can style, and what you keep if you ever switch vendors. Read what’s the difference between an iframe listing search and listings imported into my own website before you pick a provider.
Why Use IDX Instead of National Portals?
You might wonder why you should bother with IDX when there are national portals like Zillow or Trulia. These platforms are well-known, so why not just use them? The answer lies in the accuracy and comprehensiveness of the data. National portals often rely on individual agents and brokerages to repost MLS listings or aggregate data from various sources. This can result in outdated or incomplete information. For example, you might find listings that have already been sold or are no longer available. In contrast, IDX provides up-to-date information directly from the MLS. This ensures that your website showcases accurate and current listings, giving you an edge over national portals.The Benefits of Using IDX
Beyond accurate listings that update on their own, covered above, IDX helps in two more ways:- User Experience: Visitors can browse through available properties easily, increasing engagement.
- Lead Generation: Accurate listings attract more potential buyers, helping you generate more leads.
The setup is a separate job with its own steps, from the feed request to field mapping and the first sync. It is covered in how to integrate MLS and IDX into WordPress.
Your Experience with IDX
I’m Laura Perez, and I’ve been working in real estate for over a decade. My personal experience with IDX has been overwhelmingly positive. The ability to offer my clients accurate and up-to-date listings has made a significant difference in my business. Not only does it save time, but it also helps build trust with potential buyers. I encourage you to explore how IDX can benefit your own real estate website. Feel free to share your experiences or ask questions in the comments below. Your input can provide valuable insights for others navigating this journey. Thank you for reading! Stay tuned for more tips and advice on growing your real estate business.FAQ
How do I integrate IDX on a WordPress site?
Pick an IDX provider, such as iHomefinder, Diverse Solutions or Realtyna, install its plugin and follow its setup, or on WordPress use the MLSimport plugin, which imports the listings as pages on your own site.
After installation, customize the look of your listing pages to match your site design, then test that listings display correctly and update as expected before going live. If you are not comfortable with the setup, you can hire a WordPress professional who specializes in real estate sites.