Hi all, first time posting to this site. I am changing an existing 200 amp service to a 2 meter service. Presently, the home added an apartment above the garage with its own 100 amp panel. The panel is served by a 100 amp breaker in the main panel. The homeowner wants to separately meter the new apartment. My question is, can I change the single meter to a 2 meter enclosure, and install a 100 amp breaker from the second meter in its own enclosure next to the existing panel, or should I get a meter enclosure with a breaker built in and bring the feeder to the meter enclosure? Thanks in advance for your advice.

I think adding a separate meter with disconnect, leaving the existing alone, is easier, and more cost effective. You still need to add the riser up to the aerial cable from the utility, assuming this is all overhead.