I a factoring in the replacement of the AC unit and potentially the water heater, and the cosmetic thins (I would do myself) to get it to rentable standard.

I learned the hard way how to shut off water and how to winterize.

I learned the hard way how to shut off water and how to winterize.

Read or watch YouTube’s on India and Africa bringing water to the land.In the meantime you won’t save your way there.  

Licensed with permits ~$4,000.Full replacement of all water supply lines and shutoffs from the interior water meter with PEX and an open basement.  1 kitchen 1 bath 1 laundry. 

If the water bill is $100 a month, increase the price by 20% (or whatever you decide is fair) to compensate you for the time required to split and bill and to cover additional use when tenants squander the utility.

The property has 2 electric meters and one water meter.

Sounds like you stopped water which is most important.

The expansion of ADUs hence serves a dual purpose, simultaneously addressing housing affordability concerns and nurturing the urban economic vitality.As far as sewer and water, they would be pulled off the main in the back of the property.

Otherwise, you will likely be copying someone else's false expectations.I have reviewed hundreds of such self-constructed logs, and most of them will not hold water.