About Houston MLS
Houston MLS (HARMLS) is the listing service of the Houston Association of REALTORS, feeding one of the highest-volume housing markets in America. Houston MLS IDX puts that inventory on your own website, from Heights bungalows to Katy master-planned communities, straight from the source database agents update all day.
The system behind the market:
- The association traces to 1908 as the Houston Real Estate and Insurance Exchange, chartered as the Houston Real Estate Board in 1918
- Renamed the Houston Association of REALTORS in 1990
- The MLS itself is operated by Houston Realtors Information Service (HRIS) on the Matrix platform
- Data reaches vendors through RESO-compliant channels, including CoreLogic's Trestle and the Bridge Interactive API
- Runs HAR.com, one of the busiest association-operated listing portals in the country
That last point shapes the Houston market: consumers here already know HAR.com. The agents who win anyway are the ones whose own sites answer faster and follow up better.
Coverage area
Houston MLS serves agents and brokers across:
- Texas - greater Houston and the upper Gulf Coast region
The core counties and the markets inside them:
- Harris County: Houston proper, the Heights, Bellaire, Spring, Cypress, and Kingwood
- Fort Bend County: Sugar Land, Katy, Richmond, and Missouri City
- Montgomery County: The Woodlands, Conroe, and Magnolia
- Parts of Brazoria County: Pearland and Alvin
- Parts of Galveston County: League City and the mainland communities
- Parts of Waller and Wharton counties on the growing western fringe
Dallas-Fort Worth, Austin, and San Antonio each run their own systems, covered on separate pages. If your farm is anywhere the Houston commute reaches, HARMLS is your data.
How to get Houston MLS listings on your website
HRIS documents its data program thoroughly, and CloseDaily handles the vendor side on established channels:
- Hold HAR membership with MLS access. Subscription runs through the association, and IDX rights ride on your broker's participation.
- Sign the data authorization. HAR uses a broker data access authorization agreement, so your broker signs alongside you before any feed is issued.
- CloseDaily pulls the feed. We work the RESO-compliant channels HRIS provides, Trestle and Bridge Interactive among them, from accounts already in place.
- Your search goes live. CloseDaily maps the fields, meets HAR display rules, and launches search, listing pages, and alerts on your domain.
Houston's paperwork is straightforward by big-MLS standards. The broker signature is the step to chase; the technical side is ours and runs in parallel.
CloseDaily and Houston MLS
CloseDaily supports IDX integration for Houston MLS. HARMLS listings drive your site's search while the CRM underneath captures leads, scores activity, and runs follow-up without being reminded.
In a market where the association's own portal is a household name, your edge is speed and ownership: your domain, your leads, your follow-up sequences. Nobody hands a HAR.com inquiry back to you faster than your own website.
Entry pricing is $299 per month, and the 7-day free trial asks for a credit card up front. Onboarding covers the feed setup, typically a few business days after HAR's authorization clears.
Start your 7-day free trial or Book a demo and put HARMLS home search on a site you own.
Frequently asked questions
Does CloseDaily support Houston MLS IDX?
Yes. CloseDaily supports IDX integration for Houston MLS throughout greater Houston. We handle the feed through HRIS's RESO-compliant channels and launch during onboarding.
How do I add Houston MLS home search to my website?
Confirm your HAR membership, get your broker's signature on the data access authorization, and CloseDaily takes it from there: feed request, field mapping, compliance, and launch.
What areas does Houston MLS cover?
HARMLS covers Harris, Fort Bend, and Montgomery counties in full, plus parts of Brazoria, Galveston, Waller, and Wharton counties. That spans Houston, Sugar Land, Katy, The Woodlands, Pearland, and League City among others.
How long does Houston MLS IDX setup take?
The broker signature on HAR's authorization agreement is the pacing step. Once it clears, CloseDaily's onboarding work typically finishes within a few business days.
What is HRIS?
Houston Realtors Information Service is the arm of the Houston Association of REALTORS that operates the MLS and its data services. When paperwork or feeds get discussed, HRIS is the counterparty on the MLS side.
My clients already use HAR.com. Why do I need my own search site?
HAR.com serves the whole membership, which means your listings sit beside everyone else's and the leads route through the portal's rules. Your own HARMLS-fed site keeps the visitor, the inquiry, and the follow-up under your brand.
Related MLS coverage
- North Texas Real Estate Info Systems - Texas
- Unlock MLS - Texas
- Galveston MLS - Texas
- Brazoria MLS - Texas
- Bryan-College Station MLS - Texas
Houston MLS is a trademark of its respective owner. CloseDaily is an independent IDX and CRM provider. CloseDaily is not affiliated with, endorsed by, or sponsored by Houston MLS or its parent organization.