This will help you keep your water in check.Or, do sub-metering where the tenants pay for the water usage.

HUD accepted contract.Inspection turned up copper conduit from meter base to house gone and A/C system striped.

Fourth unit is vacant and stripped, awaiting remodeling that current owner never got around to doing.)Estimated repairs on vacant unit, per contractor friend that saw it: $15,000Estimated rent for updated fourth 1BR/1Ba unit: $700Utilities (water, trash; electric is metered separately and tenants pay): ~$200Ran it through the BP calculators a couple times and found that at asking price, 20% down, and only the three units rented, it about breaks even (including 10% vacancy, 6% repairs, 8% capex, and 10% PM). 

My biggest concern so far would be it is currently all on one electric meter with a fuse panel.

Are any utilities separate or sub-metered?

-city sewer/water (I am not sure if master meter or if included in pad rent price, but will find out)-Laundry room, workshop, paved road-I am not positive, but believe it is 55+ community-Gross Rents= 121,200-Expenses: Vacancy- 9,696 (8%), Insurance 2,500, Taxes 7,000, Management (8%)- 9,696, Maintenance/Repair (5%)- 6,060, Garbage- 2,000, Lawn- 2,500= Total expenses 39,452-NOI= 81,748- One question here, should I be including the payments for the 7 park owned properties?

The upside is in running the park expenses better than 45%, sub-metering the water so you can pass on those expenses, and filling the vacant space. 

Is it separately metered?

They require everything you mentioned, and even have some additional requirements...separate water, electric, and heating systems and meters, and a structural engineer or architects "statement of condition" for all the systems in the building...not cheap. $10k total costs would be nice.

Have you ever had to add a new gas meter?