Which cost estimating method is typically used during Programming?

The unit cost system is an appropriate cost estimating method during the programming phase because it allows for the estimation of costs based on established unit rates. This method is useful at the early stages of a project when detailed information about the specific materials and specific quantities is not yet available.

In the programming phase, the focus is on understanding the scope, requirements, and overall concept of the project rather than detailed construction specifications. The unit cost system provides a way to generate quick estimates based on general categories of work, thus facilitating discussions about budget allocation and feasibility without getting into finer details of construction costs which will come later in the design process.

The other cost estimating methods mentioned are less suitable at this stage. Complete pricing based on contractor quotes typically requires detailed designs and is conducted once more information is available. Detailed pricing based on components also necessitates specifics that are not usually defined during the programming phase. Final pricing with revisions is relevant later in the process when designs have evolved and more precise figures are required. Therefore, the unit cost system aligns well with the needs of the programming phase, making it the most effective choice in this context.