Just finished this plugin for a client to help them integrate listings from a MLS search directly onto their WordPress website instead of going through an iframe. It downloads the images and sets one as a featured image to the custom post type post it creates. It uses PHRets to connect to RETS. Since there is no agent info given in the TREB MLS listings you can enter your MLS numbers into the plugin and it will automatically crawl every 24 hours and keep the listings up to date. See the read me on Github for more info.

https://github.com/moeloubani/wptrebrets

Get in touch with me if you’d like any customizations for Toronto Real Estate Board MLS integrations using this plugin or a new custom solution.