Is there a way to check if the lighting has been built through code?

I am just wondering if there is way to check if the lighting has been built through C#. I would figure it be possible in Unity 4. But with Unity 5 and the lighting being built as you edit, I imagine it would be more difficult. I am more interested in finding if the lighting is being built rather than having been built but either way would work. All help is much appreciated.