MLS data integration:
how it actually works.
The difference between an iFrame embed and true native MLS integration — and why it matters for SEO, search performance, and data ownership.
What is MLS data integration?
MLS integration is how listing data gets from your MLS board onto your website — automatically, accurately, and at scale.
From MLS to website — automatically
When an agent adds a listing to the MLS, MLS data integration ensures that listing appears on your website within minutes — with photos, price, status, bedrooms, bathrooms, lot size, and all other fields populated correctly. When the price changes, your website updates. When the listing goes under contract, your site reflects it. When it closes, it moves to sold.
This is what separates a professional real estate website from a static one. A site without MLS integration requires manual listing entry — which is both time-consuming and guaranteed to fall out of date. GenieScout™ handles this entirely automatically, importing from your MLS board via the Trestle data platform, which connects to over 600 boards across the US.
IDX iFrame vs. native integration
Most real estate websites use an iFrame embed. It is quick to set up and requires no technical work — but it has significant SEO and ownership consequences.
The SEO difference is substantial. Read more about real estate SEO →
Three sync layers — always current
A single nightly import isn't enough. GenieScout™ runs three independent sync processes so your listings are never more than 15 minutes out of date.
15-minute new listing sweep
Checks the MLS for any listing added or modified in the last 16 minutes. New listings appear on your site within 15–30 minutes of being entered in the MLS.
15-minute active refresh
Updates price, status, days-on-market, and photos for all Active and Pending listings. Price reductions and status changes are reflected quickly.
Nightly full import
A complete paginated sync of every listing in your configured area runs at 2am. Catches anything missed by the sweep and reconciles the full inventory.
Active
Active
ABC-123456
123-main-st-cityname
CITY NAME (ALL CAPS)
City Name
RES
Residential
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WordPress media
Raw MLS data isn't website-ready
MLS data is built for data exchange between systems — not for public display. Field names are technical shorthand, property types are codes, city names are in all caps, and statuses vary between boards. Without normalisation, that raw data produces a broken, unprofessional website.
GenieScout™ normalises every field before writing it to WordPress. Status codes become human-readable labels. Property types are mapped to your configured taxonomy. City names are formatted correctly. Photos are deduped and filtered so only real images appear. The result is clean, consistent listing data — automatically.
MLS integration questions answered
What is MLS data integration?
MLS data integration is the process of connecting a real estate website to an MLS board so that listing data flows automatically from the MLS to the website. When a listing is added, updated, or withdrawn in the MLS, the website reflects those changes automatically — no manual entry required.
What is the difference between IDX and MLS data integration?
IDX is the policy framework that allows agents to display other members' listings. MLS data integration is the technical implementation. Most IDX solutions use an iFrame embed — GenieScout™ uses a native WordPress import via the Trestle API, so listing data lives in your database and is fully indexed by Google.
How often is MLS data updated on my site?
GenieScout™ runs three sync layers: a 15-minute sweep for new listings, a 15-minute refresh for price and status changes on active listings, and a full nightly import at 2am. New listings typically appear within 15 to 30 minutes of being entered in the MLS.
Which MLS boards does MLS Genie™ support?
MLS Genie™ connects to over 600 MLS boards across the United States via the Trestle data platform. Contact us to confirm your specific board before signing up.
Why does native MLS integration help SEO?
An IDX iFrame embeds a third-party page — Google does not index that content as part of your site. Native MLS integration stores listing data in your WordPress database, so every listing page is a fully indexed, canonical URL on your domain. This is the single biggest SEO advantage of native over iFrame integration.
Live MLS import.
Your site. Your data.
Book a demo and see GenieScout™ running live against a real MLS board — new listings, status updates, and photos all flowing automatically into a WordPress site you own.