However, on some projects several of these steps may be combined or there may be additional ones. The architect prepares a series of rough sketches, known as schematic design, which show the general arrangement of rooms and of the site. Some architects also prepare models to help visualize the project. The owner approves these sketches before proceeding to the next phase. The architect prepares more detailed drawings to illustrate other aspects of the proposed design.
Floor plans show all the rooms in correct size and shape.
Outline specifications are prepared listing the major materials and room finishes. Once the owner has approved the design, the architect prepares detailed drawings and specifications, which the contractor will use to establish actual construction costs and build the project. These drawings and specifications become part of the building contract. The owner selects and hires the contractor. The architect may be willing to make some recommendations.