Which of the following is a common reason for inaccuracies in construction estimates?

Insufficient data is a common reason for inaccuracies in construction estimates because a lack of comprehensive information can lead to gaps in understanding project requirements, costs, and potential risks. When estimators do not have access to complete and accurate data, such as labor rates, material costs, or scope details, they are at a higher risk of making assumptions or approximations that can lead to significant errors in the final estimate. This uncertainty can affect budgeting, scheduling, and overall project planning, potentially resulting in cost overruns or project delays.

In contrast, having detailed project specifications, clear communication with stakeholders, and thorough site analysis typically contribute to a more accurate estimation process. These elements provide the necessary context and clarity to inform better decision-making and planning, ultimately reducing the likelihood of inaccuracies.