Even so, Boulnois warns that the biggest obstacle is resistance to change.
“Get the local contracting community involved as early as possible,” he advises. “Local contractors thought this process was going to cut them out, but they're learning that it does the opposite.”SAVINGS VS. DESIGN-BID-BUILD
Balfour Beatty estimates that change orders add 15% to 16% to the total cost of a design-bid-build project. The Florida DOT expects overruns to equal 10% of construction costs on a typical design-bid-build project.
For Osceola County, Balfour Beatty's fee is 6% of construction costs. Of that, 1% is for handling all the preconstruction activities that enable the project to begin construction when plans are only 30% to 60% complete.
Because the program is new, no one was quite sure what to expect in terms of return on investment. Each of the 11 projects has a separate budget that includes the 6% management fee. So far, virtually all project phases have come in under budget even with the 6% factored in.
— Johnston is editor in chief of PUBLIC WORKS; Vargas (firstname.lastname@example.org) is a certified construction manager and senior project manager for Bal-four Beatty Construction (www.balfourbeattyus.com).
Source: Construction Management Association of America, 2008