Frequently Asked Questions 




1.)    How do I gain access to the NTREIS MLS data for my website?

Contact RETS@NTREIS.NET requesting the required forms and documents.  You will find these links useful:

General information about RETS:

RETS 1.5 Specification:

Information specific to NTREIS RETS:

2.)    I have my RETS Credentials, but what is my next step?

To download data from the NTREIS RETS Server, you will need a RETS client.  You can use a custom RETS client you created or ezRETS or the MarketLinx RETS client, RETS Connector. RETS Connector only works in Windows operating systems. You can download RETS Connector at for free.  It has an excellent help manual.

3.)    My downloads are only 400 records at a time.  How do I download more?

The NTREIS RETS Server has a default of 400 records.  You can use the LIMIT parameter in your RETS Client to allow for more records.  See the ‘RETS 1.5 Specification Manual Section 7.4.3’ for information on the LIMIT parameter. 

4.)    My connection times out when downloading.  Why?

The IIS that runs on the RETS server has a default time limit of 26 minutes.  If you run a download that exceeds that, you can be disconnected.  This limit cannot be changed.  Because NTREIS has over 1.2 million listings and over 3.4 million media files, a very large download can exceed the default time limit, particularly if the Internet connection between your server and the NTREIS RETS server is slow.  NTREIS suggest you run several initial downloads based on MODIFED, breaking it up by year, and then only run incremental after these initial downloads are completed.

5.)    Is the timestamp on the MLS data in Greenwich Mean Time?

While the clock on the RETS Server itself it set to Greenwich Mean Time (GMT), the timestamps on the actual data is set to local time in North Texas (Central Time).

6.)    My downloads fail during the middle of the night.

The RETS Servers undergo a nightly reboot between 2 and 2:30 am every morning.  You can modify your RETS client to avoid these time periods.

7.)    What is the “Removed” class?

On rare instances, a listing that was entered as a duplicate by mistake will be deleted from MLS by NTREIS Staff.  If this occurs, the listing should be removed from your database as well.  The Removed class contains the list of MLS Numbers removed by NTREIS Staff.

8.)    Is there a way I can view or check the media associated with a listing?

NTREIS provides a tool for verifying the media exists on the Media Servers.  Use this link:

and enter the MLS Number.  The results will display all the media as it exists on both NTREIS servers that store media. 

9.)    I am not finding the correct number of pictures for the listings and the images are wrong.

This problem is commonly caused by an incorrect join between the Property Classes and the Media Class.  Every listing has a MLS Number and UID in the Property Class.  The UID in each Property Class links to the TableUID in the Media class.  In addition, there is a UID in the Media class. 

The MEDIA UID does not link to the UID in the Property Classes. 

The TABLEUID in the MEDIA Class links to the UID in each Property Class.

10.)            What field do I look at to see if the data has changed?

All classes contain the MODIFIED field which is a date and time the record as last changed.  For new listings, this date and time is when the listing was added to MLS.  It changes when media is added, edited, or modified.


The PHOTODATE updates whenever any media is modified, added, or deleted.  PHOTODATE will not update if display order is changed.


11.)            What is the difference between streetdir and streetdirsuffix?

The United States Postal Service recently added a new field, streetdirsuffix to their address field.  As the Public Records are standardized against the USPS addresses and the Public Records can be used to autofill MLS Listings, the streetdirsuffix field has been added to MLS and to RETS.


When a street name contains anything that can be mistaken for a direction, automated systems can be confused.  An example would be streets with names like “North Ridge Dr.”, “South Pipeline RD.”, “Northwest Highway”, etc. and when the street direction is added to this, the address could be “S. North Ridge Dr.”, “E. South Pipeline RD. ”, “W. Northwest Highway”, etc...  To reduce the confusion, the USPS added the streetdirsuffix to the end of the address.  The correct address for the examples above is: “North Ridge Dr. South”, “South Pipeline Rd East”, and “Northwest Highway West”. 


The street elements should be displayed in this order

·         StreetNumDisplay

·         StreetDir

·         StreetName

·         StreetType

·         StreetDirSuffix

·         UnitNum


Some properties have addresses like ‘403A’ or ‘2436B’.  This is the values entered in StreetNumDisplay.  The numeric characters from these types of addresses are stored in “StreetNum”.

12.)            How do I find foreclosed properties?

The NTREIS IDX data profile does not contain a field that indicates foreclosed properties.  This is the data profile used for Internet Websites.  The NTREIS NonIDX data profile contains the SELLERTYPE field with the option, "Lender/REO", which identifies foreclosure-related properties.  The NTREIS NonIDX profile is for MLS Brokers who can view data in the MLS System.  This RETS feed is typically used for a MLS Back-Office Application. 


The link below will allow you to view the list of fields available for the IDX and NonIDX profile:

The tabs on the bottom of the worksheet identify the IDX and NonIDX profile.



Updated: 5/10/2011