At what point is the formal authorization for building expansion expected?

The correct choice indicates that formal authorization for building expansion is typically expected after the pre-occupancy survey. This stage is crucial as it involves a comprehensive review of the construction to ensure that the building meets all safety, structural, and regulatory standards before it is occupied. The pre-occupancy survey assesses the readiness of the building for its intended use, confirming that all systems are operational, the design meets code requirements, and occupancy can be safely permitted.

Authorization at this point ensures that all necessary inspections and approvals have been completed, and the building is deemed fit for its new purpose. It signifies a formal acknowledgment by relevant authorities that the project has met various compliance criteria, allowing for safe use of the space.

In contrast, while it might seem logical to think that authorization occurs at the beginning of construction or upon completion, these stages do not typically encompass the necessary evaluations that the pre-occupancy survey entails. Inspections finalized would not imply that formal authorization has been granted either but rather that the checks were carried out, which may lead to authorization following the survey.