Of course,many owners engage CMs to perform both functions,preconstruction and construction services, and one contract is issued incorporating both phases.
The growth of the construction manager concept as aproject delivery system has proceeded at a rapid pace,with the Top 100 firms recording annual sales volumes that have increased by more than 10 percent per year since 1993.
CM work has come in some criticism,not so much directed at the system as at those firms that profess to be qualified construction managers but lack the experience and staff to perform the required services at the anticipated professional level.