Construction Management and Economics has not, as yet, run a Special Issue arising out of a conference. However, we are not dogmatically closed to the suggestion. Our Special Issues tend to be themed on specific topics in which a Guest Editor is in a position to invite papers from leading academics around the world. The problem with connecting a Special Issue to a particular conference is that the choice of papers is restricted to those who came to the conference. These are not necessarily the key international academics in the topic, although it is possible that a conference may attract a good proportion of them.
Our preferred approach is to keep a close eye on conference papers so that we can invite selected likely authors to develop their papers into journal papers, but not necessarily as part of a Special Issue. Also, we would be keen to use the momentum from a particularly lively session to lead to a Special Issue proposal that would then be more in line with our usual expectations, which are spelled out at http://bit.ly/CME-SIprop.