The sell-off by the Franco-American group includes the Builder Group, which publishes Property Week and The Builder. Property Week is a rival to Reed's Estates Gazette.
Other titles being sold include Le Moniteur, the largest weekly magazine for the construction industry in France, and the Barbour Index, which provides specialist information to the construction industry.
Other possible UK bidders for the titles include Emap, which owns Construction News, Architects' Journal, and New Civil Engineer among other titles.