RETS Vendor Help

As of March 2023, all access to RETS URLs using the non-secure "HTTP" will be disabled.

Issues? Please ensure the following:

  • The RETS URL syntax is "" where "mlsid" is the MLS/Board ID. Previously was ""

  • All applications and libraries use TLS 1.2.

  • Password case is correct, as HTTPS is case sensitive.

  • Base authentication is being used, and not Digest authentication.

What is RETS? RETS stands for Real Estate Transaction Standard.  It is the agreed upon "rules of the road" for data transfer in the Real Estate Market.

RETS Best Practice Guide

This guide is intended to be a starting point for Paragon Real Estate Transaction Standard (RETS) developers.

It provides a basic overview of RETS and describes some useful techniques to get started with Paragon RETS.