What defines substantial damage to a structure?

Substantial damage to a structure is defined by the cost of repairs equaling or exceeding 50% of the market value of the building. This threshold is significant because it indicates that the damage is extensive enough to impair the structure's usefulness and safety, often requiring more extensive rehabilitation efforts. When repairs reach this level, it can trigger requirements for compliance with current building codes and floodplain management regulations, which are essential in maintaining safety standards and reducing future risk.

The focus on 50% of market value underscores the importance of financial thresholds in managing the impacts of damage, particularly in flood-prone areas where structural integrity is critical. By establishing this benchmark, regulations aim to ensure that properties are not only restored but also improved upon to better withstand future hazards, contributing to overall community resilience.