The construction industry is re-evaluating the traditional design-bid-build method of project delivery and exploring alternatives. Rather than architects designing a project and then, after the fact, involving a contractor to bid and build, the new trend is for “integrated project delivery” with designers and builders working together from the start of a project with a single contract for both design and construction services. In fact, half of all U.S. states now favor an integrated design-build approach, which reduces the likelihood of schedule-stops and delays, budget over-runs, change orders and other conflicts.
Studies have found that a design-build delivery system can cost 6% less and result in 34% faster project completion compared to the traditional design-bid-build format. New York requires design-build on some state contracts, claiming that infrastructure projects in particular lend themselves to this integrated approach and could save New York City alone $2 billion over the next decade.
There continues to be ongoing dialogue over this practice and trend.
Building Design + Construction: http://www.bdcnetwork.com/half-us-states-now-allow-design-build-public-projects ;
Engineering News Record: http://www.enr.com/articles/38694-disputed-design-build-study-raises-questions-about-costs?v=preview;
The Design-Build Institute of America: http://www.dbia.org/Pages/default.aspx