What are the common project delivery methods in construction?

Common delivery methods: Design-Bid-Build (DBB) - traditional sequential process, owner contracts separately with designer then contractor. Design-Build (DB) - single entity handles both design and construction, faster but less owner control. Construction Manager at Risk (CMAR) - CM provides preconstruction services and guarantees maximum price. Integrated Project Delivery (IPD) - collaborative multi-party agreement sharing risks and rewards. Selection depends on project complexity, owner experience, risk allocation, and schedule requirements.