A 2D building design is a flat, two-dimensional representation of a structure, typically viewed from the top (floor plan) or from the sides (elevations). This type of design is primarily used in architectural planning to convey the layout, dimensions, and structural elements of a building in a clear and simplified format. It includes details such as wall placements, door and window locations, room dimensions, and sometimes furniture layouts. 2D designs are often created using computer-aided design (CAD) software and are essential for construction planning, permitting, and communication among architects, engineers, and builders. Though lacking in depth or perspective, 2D designs provide a foundational visual guide that supports the entire architectural development process.