Who do I need to call to get an estimate?
The contractor that arranged for the 3" stone fill was the concrete guy. So you might start there. An excavator would be next on my list. Then a general contractor. You might hear talk about raising the house. I'd ask whoever will be inspecting the house if you fill to an area where no human can crawl, would that be enough?
It doesn't matter if it is finished or empty. FEMA said that since you have a basement; it could fill again with water and cause problems with the entire house.
What I'm trying to wrap my head around is the logic of that comment. Let's say you completely empty your basement and seal the interior foundation wall to the same code standards as the exterior and concrete up the windows, just as if you were filling it in.
If the basement fills with water and all electrical panels and devices are above the 7' mark, and all HVAC equipment, ducts and other equipment are above 7' (which you have to do regardless), what problems could happen that wouldn't happen if you filled it?
The water would equalize the outside pressure, so the walls won't cave in. Support columns would be affected similarly, with or without the fill, and if they are metal, you'll probably have to encase them in concrete anyway.
The concrete sealant would protect the inside walls, just like it does the exterior walls. All electric would be out of the way. Plumbing pipes that are below 7' wouldn't be affected. Submersible sumps, that keep the basement dry in normal circumstances, wouldn't be affected, as long as you have long cords on the pumps and no extension cords.
So I'm wondering how simply emptying the basement and getting anything susceptible to being submerged safely out of harms way could
"cause problems with the entire house." What am I missing?
Considering the financial hit victims have taken from this disaster, it would seem our government could allow this instead of causing homeowners to spend thousands more dollars, all out of pocket. And if the homeowner re-occupies the basement, they are on their own for the contents.
Maybe it's time to gather up similarly affected homeowners and have a talk with the Gov. If he won't listen, the media sure will, especially if you have a structural engineer backing you up.