the crucial phase in architecture and engineering that transforms broad schematic concepts into detailed, practical plans, focusing on refining layouts, selecting materials (finishes, structural), integrating systems (HVAC, electrical, plumbing), and coordinating with specialists to prepare for construction, ensuring functionality, budget adherence, and feasibility before final construction documents are drawn.
It's the bridge between initial ideas and technical blueprints, making decisions on the look, feel, and function to prevent costly changes later. .