Electrical Subcode Technical Section

We currently have 2 electrical meters and we want to add an additional electrical meter for the bottom floor for the light and outside fixtures. so 3 meters in total, where the electric meter box will be changed to a bigger one too with proper items on the inside. And so its adding another house meter for the basement and common area, so 1: 100 AMP Service and 1 additional 100 AMP Subpanel. All written in the paper.