Plus you will have to get a water meter, electric, etc for the other lot.

I am not sure what the plan is in terms of metering each unit and passing that cost on to the tenants as well as other improvements that could increase rent, however, those costs should be part of the negotiations and hence on the overall price.  

However it's zoned as a duplex with the city(has 2 gas meters, 2 furnaces, 2 waterheaters). 

In the end it’s about verifying the rents via craigslist, rent o meter, and learning the market.

I can not seem to get a straight answer from the electric company to a ball park price to add the two new meters. 

If that includes electric and gas you’d have to sub meter most likely.

I don't want to spend the money to individually meter the units, it doesn't make sense financially. 

Try Rento-meter (free) or Rentrange ($2-$3 fee) or Zillow will get you close

Water could be individually metered to add another $6K a year.

Also it has city water and sewer which is metered separately and paid by tenants.