Just general info, that might help someone:
Our house has always had NG. Tract suburban home (1979) with gas heat, water and stove.
Since we moved in, we have added on a couple times, and the house now has three water heaters, two furnaces, BBQ and a gas fireplace insert.
I began to wonder if the old gas main and meter was adequate for more than double it's original capacity. I finally called the gas company to check it out. They said the main was adequate, but installed a new meter with four times the capacity.
Amazingly, it cost me nothing, and they did it within a week.