Under what condition can an Authorized Agent deem a construction permit invalid?

The correct answer highlights the importance of site and soil conditions in the context of construction permits. An Authorized Agent can determine a construction permit to be invalid if site or soil conditions change after the permit has initially been approved. This is based on the principle that the permit is contingent not only on fulfilling the application criteria but also on the existing and anticipated environmental conditions. If there are significant changes—such as soil erosion, contamination, or unforeseen geological challenges—it can impact the feasibility and safety of the planned construction, necessitating a re-evaluation of the permit's validity.

Other conditions, while critical, do not inherently lead to the invalidation of a permit once it is issued. For example, if construction has started, it typically signifies that the permit is valid and active, barring any violations. An incomplete application can prevent permit approval in the first place but doesn't affect the validity of a permit that has already been granted. Similarly, failure to pay the fee could result in delays or issues with the permit's active status but does not automatically render it invalid once issued. Thus, the changes in site or soil conditions present a fundamental reason for reconsidering a permit's legitimacy.