caravanning
n.— «Wilson & Co., like other local real estate firms, hosts broker open houses, a practice also called caravanning. One firm organizes a collective open house in the same area and allows agents who represent buyers or sellers to preview new or existing properties.» —“Opening up your doors may not close the deal” by Tonya Strickland SanLuisObispo.com (California) May 18, 2008. (source: Double-Tongued Dictionary)
Further reading
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
In the thriller Down Cemetery Road starring Emma Thompson, a character uses the Briticism safe as houses, meaning “quite safe,” an expression thought to derive either from the sturdiness of a house or the sense of real estate as a secure investment...