Which statutory requirement impacts both new and existing structures?

The selection of safety and structural standards as the answer reflects a fundamental requirement that applies universally to all building types, regardless of whether they are newly constructed or existing structures. Safety standards ensure that buildings protect the health, safety, and welfare of occupants and the public. These standards encompass various regulations, including load-bearing capacities, fire safety measures, and material specifications, which are crucial for maintaining structural integrity and overall safety.

In contrast, energy efficiency provisions primarily impact new construction or significant renovations rather than existing buildings that may not undergo such changes. Accessibility adaptations, while crucial, especially under laws like the Americans with Disabilities Act (ADA), often focus on new constructions or major alterations but may not retroactively apply to all existing structures. Occupancy permits are essential for determining whether a building can be legally occupied, but they are typically linked to the culmination of construction rather than a continuous statutory requirement. Hence, the safety and structural standards are the most inclusive statutory requirement impacting both new and existing structures alike.