Correct option is A
Detailed estimate requires full architectural and structural drawings. This type of estimate involves a comprehensive analysis of the construction project, including detailed drawings, to accurately determine the quantities and costs of materials, labor, and other resources.
Functional unit estimate: Typically used for estimating based on the functional units of the project, not requiring full detailed drawings.
Rough or preliminary estimate: Provides an initial cost estimate based on preliminary information and does not require full drawings.
Supplementary estimate: Used to estimate additional costs not covered in the original estimate, and may not require new drawings.
Therefore, the correct answer is (a) Detailed estimate.