What is the definition of "differing site conditions" in construction?

The definition of "differing site conditions" in construction specifically refers to unforeseen conditions at the site that could impact the progress of the project and its cost. These conditions may involve subsurface or latent physical conditions that differ materially from what was anticipated based on the contract documents or general knowledge of the site.

In this context, the correct choice emphasizes unexpected circumstances that influence the project's execution, leading to potential claims for additional time or compensation. Recognizing differing site conditions is crucial for both contractors and contracting officers as it can alter the scope of work and necessitate adjustments to the project plan.

Understanding this definition helps in acknowledging the risks involved in construction projects and the importance of thorough site investigations prior to contracting.