DESIGNBUILD

Design-build is a project delivery method in which a single entity, the design-builder, carries both design and construction responsibilities under one contract. This arrangement provides a unified process for planning, design, and execution, contrasting with traditional design-bid-build in which design and construction services are procured separately and interfaces between the two can create plan changes and disputes.

In a design-build project, the owner contracts with one party that delivers design and construction services, either directly or through a tightly integrated team. The design-builder may hire subcontractors as needed, but the owner has a single point of accountability. The approach emphasizes collaboration, with design and construction teams working concurrently to meet project goals, schedules, and budgets.

Typically, the owner defines project goals, budget, performance criteria, and quality standards. The design-builder assembles a design team and advances design and construction in parallel, using early coordination to control cost and schedule. Selection is often by qualifications or best-value proposals rather than lowest bid, and procurement methods vary by jurisdiction.

Benefits of design-build include faster project delivery, streamlined communications, and reduced risk of costly rework from misaligned design and construction. It can improve constructability and provide more predictable schedules and potential cost savings, though results depend on team experience and accurate upfront information.

Criticisms include reduced owner control over design details and potential quality concerns if cost-driven pressures dominate. Successful design-build projects typically rely on careful contractor selection, clear scope definitions, and strong collaboration. It is widely used in commercial, institutional, and public works projects where speed and integrated delivery are priorities.