The next stage is the planning process that involves three stages and three corresponding meetings. The three stages are schematic design, design development and construction documents. Schematic design is a process that includes layout of rooms and spaces showing relationship and general sizes. Design development incorporates refinement of plans based on the schematic design meeting. It also includes the selection of exterior finishes and colors. Construction documents include detailing of certain areas, further refinement of plans, elevations, sections, and are used to build the house.