cost to set pilings
The difference in cost between a big deep piling and a shallow small one is at least two fold. I think I paid about $550 a pile (install and materials) for 16 ft deep, 8x8s. We needed 24 for 1050 sqft of footprint so $12k. This is for 9 feet above grade to allow parking below - very common on the NC oceanfront. The flood line allowed the house to be much lower but parking just made sense there. The cost wasn't much more to be 9 feet up - the big cost was the the 16 feet down.