Are most homes in Charlotte, NC built on slab or crawl space foundations?

I am in the beginning processes of relocating to Charlotte, NC by this summer. I have searched homes and had some sent to me by my realtor, but none of the houses have a crawl space. Is this the norm for the Charlotte area? I currently still live at home with my parents in SC (20 min from Georgia). Our house has a crawl space and so this is what I'm used to. What should I expect with a slab foundation? Is it anything to worry about as a first time home buyer?