Not really a slab, not really a crawl space
I'm building an addition and I'm interested in building a crawl space but without the space to crawl. For one thing, I'm trying to save money. In my locale I have to pour footers at least 24" deep and pour walls so a slab will be more expensive I think than building a crawl space. I have no electrical or plumbing that I intend to run underneath. I plan on running electrical through the attic like the rest of the house (the house is on a slab).
My question is, can I build a crawl space that has a gravel fill with a vapor barrier, and just a few inches up would be the bottom of the floor joists? I do like the idea of a wooden floor in so it isn't freezing like the rest of the house. Is this feasible?