Property is built like a duplex, but only 1 meter & address

[Jacob Barnhart]

Okay, so it is very rare for duplexes to become available within 30 minutes of my area. Because of that, I am making my post before I've even had time to get all of the information because I don't want to waste time and possibly lose out on the deal. This would be an amazing first investment for me.

A home has just been posted on zillow in the past 24 hours (but it says it's been on there for 400 days... any idea why that may happen?) and apparently this home was built specifically for two sisters to be able to live close to each-other, so it is two separate units in one building. 

The problem is that none of the units utilities are submetered, I'm assuming it's zoned as SFR, and it only has one mailing address and mailbox.

What can I do to fix all of these problems? Who do I need to speak to? What might it cost?

Like I said, I haven't gotten to talk to anyone about details yet, so what other problems may you forsee in this type of property?