Which type of projects typically require a permit to assess potential substantial improvements?

Remodeling and rehabilitation projects typically require a permit to assess potential substantial improvements because these types of projects can significantly alter the structure or function of a building. Under the National Flood Insurance Program (NFIP), substantial improvements are defined as any reconstruction, rehabilitation, addition, or other improvement to a structure where the cost of the improvement equals or exceeds 50% of the market value of the structure before the improvement. Since remodeling can involve extensive work that impacts the overall value and safety of the building, it triggers the need for a permit to ensure compliance with floodplain management regulations.

In contrast, landscaping projects generally do not require such permits unless they involve significant grading or alterations that could affect drainage patterns. New home constructions do typically require permits, but the focus on substantial improvements specifically highlights the need for assessment in existing structures rather than new builds. Routine maintenance is also exempt from the substantial improvement calculation, as it does not change the building's footprint or significantly enhance its value. Therefore, the context of permits in terms of evaluating substantial improvement aligns closely with remodeling and rehabilitation projects.