Basements are not very common at all in the Raleigh area.
When you do see a basement, it's much more likely to be a daylight or walkout basement. In North Carolina, homes are more likely to have walk-up third floors or bonus rooms. There are several reasons for this (besides tradition!). The frost depth is much more shallow than in areas up north, which means that a standard foundation does not have to be six feet deep, and the water tables are much higher, which increases chances for leakage, particularly into a full basement.
Daylight or walk out basements can be found on some of the more sloped terrain in the area. If you're looking for a basement home, be sure to request a sloped lot. Hope this helps!