If you are an Old, such as myself, you'll remember that, before Zillow, before social media, before the Internet, there were real estate ciculars -- magazine-sized collections of real estate properties that were represented by various Realtors. You could pick up a circular, and it would have various listings; cheaper houses were in vary spare, basic format, while more expensive properties (that carried a commensurately higher commission if they were sold) would have a half- or full-page writeup. Sometimes those read like short literature pieces; many of these real-estate writers seemed to be trying to emulate Faulkner or other popular writers. Back in the day, I understood "real estate novelist" to be the guy hired by the realtor to write the blurbs. My understanding has not changed, and the fact that people don't know what the line refers to nowadays just serves to make me feel even older...