This house in Mexico Beach FL got quite a bit of media attention after it survived hurricane Michael in 2018. It did have some damage, but nothing compared to the other houses in the area.
>>>State code in the wake of Hurricane Andrew in 1992 required that houses have to be built to withstand 120 mph winds. However, the Sand Palace was built to withstand about 240 to 250 mph winds, Lackey said.
The walls are made of poured concrete on top of 40-foot pilings. Rebar is all through the walls. Steel cables go from the girders above the pilings through the roof and continue down the other side of the back wall, they said. And there’s more.<<<
Mexico Beach, Florida, was flattened by Hurricane Michael last week. But amid the incredible destruction, one home stood high on stilts above the wreckage, appearing largely untouched and gleaming in the sun.
Here's an article with more details about the construction. The increased cost was actually not outrageous.
>>>If we might ask, how much more did the design changes cost and what impact was there on schedule?
Lackey/King: The cost premium turned out to be 15% to 20% on a per square foot basis over the cost of an equivalent, existing building in the same area. We evaluated many options and, if the extra cost was reasonable and we thought it represented an upgrade, we went with it, while always keeping an eye on the overall cost. We actually found that some elements, such as the ICF walls, did not cost that much more at all because the extra material costs are offset by lower labor costs. The ICF also had the side benefit of better insulation and resulted in lower insurance costs. We calculated that the on-going cost savings would offset the original extra costs in six to eight years. There was no noticeable impact on the project schedule. The cost of the lot is also the same regardless of what is built.<<<