Final answer:
The quantity survey method is the most detailed for estimating the cost to reproduce a structure, as it involves a thorough evaluation of all aspects of construction.
Step-by-step explanation:
The most detailed method of estimating the reproduction cost for a structure is a quantity survey. This method is more comprehensive and detailed than the comparative unit, index, or square foot methods, as it involves a thorough assessment of all materials, labor, transport, and any other costs that would be necessary to replicate the structure. This approach requires a breakdown of the project into specific components, and it is often used for unique or complex projects where standardized units might not be sufficient for an accurate estimate.