If you're talking about supply piping, if and when a leak occurs, there are pipe locating technologies available that can pinpoint a water leak so that a repair is relatively easy.

Your end goal is to:1) tell the consumer what they are going to hear2) tell them3) tell them what you told themIf you are caught off guard, you won't know how to respond, and it will disrupt your flow.Be sure to check public records for open judiciary cases, outstanding taxes, outstanding water bills, etc.

I already converted out one gas heat property to electric so the only gas bill we have across over 40 properties is for cooking stoves and domestic hot water for one seven unit building.

In my area it is typical for the owner to pay heat, hot water, water, and sewer.

Inspections inspections inspections.We had almost everything wrong with the house, and we skipped the inspection.ISSUES:-Water pressure regulator was shot and was at 160psi for months.

I had my water supply pipes replaced with copper and added a lot of electric lines to the kitchens and bathrooms where most big appliances are being used. 

A full conversion is expensive, not only you need an aditional kitchen, you also need asecond HVAC, water heater, plumbing and electrical system.

If you were to evenly split utilities there may be more arguments over who used more water, if someone was out of town, etc.

Also, HOA fees are likely higher, but they often include things like water and trash service.  

Assumed 100$/month for Water & Sewer and 50 for garbage.Does that sound right?