Three electrical meter for a triplex

[Alex Abba]

Folks, I have a legal three-family home with three electrical meters. 2 meters on one side and one on another.  I recently contracted with a licensed electrician who wanted to replace them all. He suggested new laws allow one single drop of 400 amps in my case will host two meters on one side and one 200 amps on another side. He never did the work and now I hired a different electrician who wants to install all three on one side. He wants two separate drops on one side, one 400 amp to feed to meters and one 200 amp to feed one meter. To me, that sounds stupid. So I want him to confirm with the building inspector if that would pass inspection as he will make a lot of holes in my new siding. He refusing to do so and I want your opinions.