About a year ago Google did an update to everything under the hood in terms of how the search giant handles search. Google dubbed it the "Caffeine" update.
If the pace of change in the way search results are being displayed is any indication, the effects of Caffeine have taken hold.
Google recently rolled out "snippet improvements for pages that contain lists." Snippets are the bits of text that are below the blue link. You control this for your website using the meta-description tag in the code.
"What sort of pages have lists?" you might ask. Real estate pages. If your real estate website displays search results or "browse-able" lists of property, then that page is a candidate for the new snippets.
This is one of those geeky technical search engine optimization things. The snippets, according to Google, don’t have an impact on your ranking.