Which type of foundation is most commonly used in high hazard coastal areas?

In high hazard coastal areas, pier foundations are commonly used due to their ability to effectively elevate structures above potential flood levels and provide stability in areas prone to erosion or shifting soil conditions. By elevating a home above the ground, pier foundations help in reducing the risk of water damage during storm surges or hurricanes that are frequently encountered in coastal regions.

Pier foundations also minimize the amount of area in direct contact with the ground, which can be beneficial in sandy or unstable soils that are often found in these areas. This type of foundation allows for better air circulation beneath the structure, reducing moisture accumulation and the potential for damage from termites or mold.

In contrast, basement foundations are less practical in coastal regions due to potential flooding. Concrete slab foundations can also face similar flooding risks, and footing foundations are generally not designed to provide the elevation necessary to withstand extreme coastal conditions. Thus, pier foundations stand out as the most suitable option for constructing resilient homes in high hazard coastal areas.