Gas, common electric and water for a 2-unit is going to run you between $200-400/month depending on the heating type, the size of the common areas, amenities (dishwasher, washer/dryer), etc.2) 5% PM fee is not going to happen.

One has a non-functioning wall-mounted gas heater and the other one has an electric baseboard heater.

(This would remove the need for gas)If I sell it do buyers value all electric over gas?

Or the gas station.  

(with a single gas and electric meter)I am looking for some expert who could help me rezone this and  convert this to condos  or multiple units with separate meters.Please recommend

 $1500 for new stove vent, new ductwork for kitchen, and gas drop for stove. 12x13 = 156sf so at $8/ft, your flooring budget is $1250.  

What are the utility expenses (electric, gas, water, sewer, trash)?

Businesses will charge us for the visits and we will need to pass the cost down to tenants.As for heating systems, it sounds like even the gas on gas type heating stoves in living rooms (opposite sides of stoves) is not allowed too? 

If there was a gas leak in your unit and the landlord, for health and safety reasons needed immediate access to your unit, they should have a means of entry.  

I would like a separation of gas and electric, framing, dry wall and doors.