DIYChatroom.com - Are you about to start a new home improvement task and need some help? Do you need advise on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that DIY Chatroom is a great community to join. Best of all it's totally free.
Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. DIYChatroom.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any home improvement task!
Generally, light switches should sit clear of moldings. Cutting into trim work/casing/molding for a light switch is never a very pretty sight.
If, you have no other choice, or it's no big deal to you, then you can go ahead and do it.
Here's a picture that may, or may not help you (this was in my own home - the switch was already in that location, and I added nicer door casings and moldings) (Also: Yes the light switch, itself, still needs to be changed over to a darker color to match the switch plate covers):
Sometimes you can trim the edge of the light switch, provided it isn't more than 1/4" or so. I've done this on the bandsaw a time or two. What you can't do is have wood trim exposed to the inside of an electric box.
if you have access to the wall, can you perhaps simply add a 2x4 block to the stud and move the box over that inch or so and redo the wall?
i agree with the guys, anything that cuts into the moulding looks ...well, you know.