Someone just asked me today this question, so I thought that I would throw it out here. This would be for new construction and as per 2011 NEC. Section 404.2(C)

Here is the example:

By the front door you have 2 three way switches. One for the spot light between the front door and garage the second switch is by the garage door.
One for the overhead living room lights and the other switch is by the kitchen opening.
Both 3 way switches are "Dead end" switches, meaning that the feed and neutral is at the other side of the 3-way switches.
1) Should that install fail inspection? There is no neutral at the front door.
2) Do you have to have a neutral in that double gang switch box to meet code?
3) What if there was a four way switch for that living room light and it is by the dining room opening.
4) Would the 4-way switch (in a 1 gang box) need a neutral in it.

What are your thoughts?