For new construction the code applies to a variety of measures. The part of the code that affect businesses already in operation is whereby a business wants to change or retrofit their lighting they will have to include lighting controls.
The code states if 10% of the facilities lights are changed then the entire space needs to be updated to include lighting controls. While this is good news for LED products because LEDs are so controllable, it does not fair well for fluorescent technology.
For example, let's say you are a business with 40 fluorescent linear lights and you need to change the ballasts out on four of them. This would in fact qualify for 10% and to meet code you would need to install controls. The bummer is fluorescents running on an instant start ballast will not last very long if they go on/off by an occupancy sensor. To buy a new ballast that will accommodate lighting controls like occupancy, dimmers, bi-level switching, etc. you will pay more for these type of ballasts.
The good news with LEDs is the drivers being made for these products are great with controls. You can also turn LEDs on and off as much as you want and they won't affect the life of the lamp.
Industry experts are stating that this code will add about $1 per square foot due to adding controls.
To find out more about the newly released 2014 CA building codes go to http://www.bsc.ca.gov/