In which situation is an elevation certificate required?

An elevation certificate is specifically required when new or substantially improved buildings are to be elevated in the Special Flood Hazard Area (SFHA). This certificate serves as an important document for determining compliance with local floodplain management ordinances, as well as establishing the proper flood insurance rates for buildings. It provides information on the elevation of the building relative to the Base Flood Elevation (BFE) and is necessary for obtaining flood insurance and fulfilling regulatory requirements.

In the context of the choices provided, this requirement is particularly pertinent for new constructions and significant renovations that impact the elevation of the structure, ensuring that buildings are above the flood risk levels. It facilitates the accurate mapping of structures within the floodplain and assists in minimizing flood damage to properties, which is a core purpose of the National Flood Insurance Program (NFIP).

Other situations, such as just any renovation of existing floodplain structures or commercial buildings alone, do not universally require an elevation certificate unless specific conditions of elevation and improvements apply. Therefore, the need for compliance with elevation requirements is primarily tied to the context of building elevation in the SFHA, making this option the most accurate.