About model and data exchange with 3rd party solutions: Revit, Solibri, dRofus, Bluebeam, structural analysis solutions, and IFC, BCF and DXF/DWG-based exchange, etc.
Please note that this question might be and possibly is in the wrong category and if it is can the moderator move it to the proper location. My question is, is there an add-on or recommended software that would allow the designer to determine an estimate of the cost to construct the building created in Archicad? I am looking for something that will work with AC files.
I have not looked into it, but there is a costing section within the classifications. You might be able to schedule that to work out an estimated total cost.