The Concept Design Phase establishes the foundation for multidisciplinary building design by translating the project brief into initial spatial and technical strategies. General tasks performed across architectural, structural, mechanical, and electrical disciplines include reviewing project requirements, evaluating site constraints, identifying applicable codes and standards, and defining preliminary design criteria. These tasks ensure alignment with client objectives, budget, timeline, and sustainability goals.

A key aspect of this phase is interdisciplinary coordination. Disciplines exchange early inputs such as space allocations, core placements, equipment zones, and system demands. Coordination tasks involve resolving spatial overlaps, assessing constructability, integrating infrastructure pathways, and establishing preliminary design interfaces among disciplines. Regular coordination meetings and early-stage model reviews are conducted to identify potential conflicts and confirm alignment of design concepts.

The main deliverables of the concept phase include concept design narratives, preliminary diagrams and zoning layouts, area schedules, initial load estimations, core and riser allocations, and a coordinated concept design report. These outputs are essential for stakeholder review, authority consultation, and formal phase approval before progressing to schematic design. Collectively, these tasks and deliverables ensure that all disciplines are aligned under a unified project vision and technical strategy from the outset.