Which factor can contribute to increased costs in construction projects?

In construction projects, adverse site conditions can significantly contribute to increased costs due to a variety of reasons. These conditions may include unexpected geological issues, poor weather conditions, or existing infrastructure that complicates construction efforts. When obstacles such as unstable soil, contamination, or extreme weather conditions arise, they can lead to delays, the need for additional labor, or more specialized equipment to mitigate these challenges. This not only extends the project timeline but also inflates costs associated with labor, materials, or both.

In contrast, timely deliveries of materials and effective risk management typically help to keep projects on schedule and within budget. Upfront project planning also plays a critical role in identifying potential issues early, thereby reducing the likelihood of unexpected expenses. Thus, adverse site conditions stand out as a primary factor that can elevate costs during construction.