These terms get thrown around interchangeably, so let's be precise. The MLS (Multiple Listing Service) is the database of listings your local board maintains. IDX (Internet Data Exchange) is the National Association of Realtors policy that lets a licensed participant display other brokers' MLS listings on their own website. IDX is a rulebook, not a feed.
The feed itself runs on a technical standard. The old protocol, RETS, is end-of-life; in 2026 the RESO Web API is what most MLSs use to push listing data to your site. To turn IDX on, you need to be a licensed agent, get your broker's sign-off, and connect an approved feed provider.
In plain terms: IDX is what puts a "search all homes" map and live listings on your website, instead of only your own listings.
IDX earns its keep in a few specific situations. Be honest with yourself about whether you're actually in one of them.
If your business model is driving online traffic (paid ads, strong local SEO, or a big content operation) and converting search-happy buyers into registered leads, IDX is central. The whole point is the "register to see all photos" capture and the saved-search follow-up.
IDX leads are often early-stage and unqualified. They only pay off if you have a CRM, drip campaigns, and the discipline to follow up fast. No follow-up system means IDX just fills your inbox with tire-kickers.
Teams with ad budget, and agents who dominate one small neighborhood or niche (say, a specific condo tower or a rural county the portals cover poorly), can sometimes rank and convert where big portals are weak.
For many agents, the website exists so a referral, a past client, or a Google search of your name lands on something professional. That visitor wants to know who you are, see your reviews, and contact you. A live listing search does nothing for that goal, and buyers who want to browse every home are already on Zillow or Realtor.com.
Zillow, Realtor.com, and Redfin spend enormous sums on listing-search traffic. A solo agent's IDX site almost never out-ranks them for "homes for sale in [city]." Paying monthly for a feature you can't win on is a common, quiet money drain.
IDX is a recurring cost on top of your MLS dues and website. If lead-gen from search isn't your strategy, that's budget better spent elsewhere (photography, a video, or ads pointed at a simple contact page).
Prices below were checked in 2026 and are approximate; confirm current rates directly, since they vary by MLS region and plan.
| Approach | Typical cost (2026, approx.) | Best for |
|---|---|---|
| Standalone IDX plugin (e.g. IDX Broker, iHomeFinder) | Roughly $60–$150/mo depending on tier, plus a one-time setup fee | Agents committed to buyer lead-gen from search |
| IDX bundled into a website platform (e.g. Luxury Presence) | Often included in the monthly website subscription | Agents who want IDX with no separate feed to manage |
| Custom IDX build | Reportedly ~$4,000–$10,000 upfront, plus ~$100–$300/mo | Teams/brokerages with developers and real traffic |
| Local MLS access fees (paid to your board) | Roughly $30–$100/mo, separate from any IDX vendor | Required for any IDX feed at all |
| No IDX: a focused one-page site | AgentSiteHQ is a one-time $297, you own it (domain ~$12/yr) | Agents whose site is for credibility, referrals, and contact |
Sources for the pricing ranges above: Luxury Presence, Project Cost Estimator, and IDX Broker. What IDX/RETS/RESO mean: MLSimport and SimplyRETS.
IDX isn't good or bad; it's a tool for one specific job: converting online home-searchers into leads. If that's your game and you'll work it, integrate it. If your website's job is to make you look legit and let people reach you, a focused one-page site does that better and cheaper, without a monthly bill you'll forget you're paying.
That's the whole idea behind AgentSiteHQ: one clean page, built to earn trust and capture contacts, for a one-time $297. No subscriptions, and you own it. If that fits how your leads actually find you, you can see a free preview of your own site before you pay anything at agentsitehq.com. And if you truly need IDX, we'll tell you straight, that's a different tool for a different job.
No. Being on the MLS means you're a member of your local board and can input and access listings. IDX is a separate policy and feed that lets you display those MLS listings on your own website. You need MLS membership (and your broker's permission) before you can add IDX.
Yes, and that's often the smart move. You can launch a simple site now for credibility and lead capture, then connect an IDX feed later if you build a real buyer-search strategy. Adding a subscription is easy; paying for one you don't use is the waste.
Usually not. Those portals dominate listing-search traffic. A solo agent rarely out-ranks them for general 'homes for sale' searches. IDX tends to pay off only when you drive your own traffic through ads, strong local SEO, or a tight niche the portals cover poorly.
As of 2026, standalone IDX plugins run roughly $60 to $150 per month depending on tier (for example, IDX Broker lists plans at about $60, $99, and $149), and that's on top of the $30 to $100 monthly MLS access fees you pay your local board. Some website platforms bundle IDX into their subscription. Confirm current rates directly, since they vary by region.
They typically don't browse listings on a no-IDX site, and that's fine. A focused site links out to portals or your active listings, and its real job is to build trust and capture the visitor's contact info. Buyers who want to browse every home are already searching on the big portals.
Add your name and a listing and watch your finished website appear — a one-time $297, no monthly fees, live in 3 days.
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