I have a Lightolier Multiset lighting system in my home. You can get 4 dimmers, and a master. You will need 14/3 wire (3rd wire is for the master). With the master you can also set 'scenes' - (besides all on/off, or all dim).

Here is a link that might be useful: Lightolier Multiset Pro

Are these lighting zones in one big room or in separate rooms? Is the stairway lighting part of one or another of the zones or on its own?

Thanks for the fast responce.
I was planning a seperate switch and light for my stairwell. But If there was a cheap solution, I would integrate that into a plan like the above mentioned system (Im not sure on the cost).
The zones will be bascially in one very large open concept basement. PLease see the attached sketch.

Any of the home automation switches will likely suffice. I'm partial to the Z-WAVE stuff. As far as code goes, the only thing you really are required to do is have a switch for the stair lights at both ends of the stairs (or a motion activated device).