During which phase are deliverables presented to the owner as plans and specifications that are 10 to 30 percent complete?

The phase in which deliverables are presented to the owner as plans and specifications that are 10 to 30 percent complete is the Schematic Design phase. During this stage, the core concepts of the project are developed, and basic layouts, spatial relationships, and functions are explored, albeit at an early level of detail.

The Schematic Design phase aims to provide a visual understanding of the overall design intent and initiates discussions about how the project will take shape. This phase serves to establish a foundational overview that can guide further development in subsequent phases. As a result, stakeholders can provide feedback and make informed decisions before the design becomes more fixed in the Design Development phase and later stages.

The other phases focus on different aspects: Construction Documents involve detailed specifications and drawings meant for construction, Design Development expands on the initial design with more refinement but is still more complete than the Schematic Design, and the Pre-Construction Phase typically includes activities prior to actual construction rather than the initial design presentation.