What I want to know is what others have experienced using OZone Machines for bad odors.You are supposed to be able to use them to kill bugs.

Guests are responsible for their own utilities and housekeeping expenses.Renter pays for all utilities including water, electric and gas.

We plan to act as the GC for permit coordination, but mechanical, electrical, and plumbing contractors will file their permits individually under our GC status.

Obviously, newer homes are the "safest" bet because they will likely not need any major CapEx expenditure.What's the oldest property you would consider investing in for rental property before major systems (electrical, plumbing, etc.) become a major liability and expense?

It could also be the age of the systems (roof, electric, plumbing, heating) or other factors. 

-what kind of shape is the electrical in?

Electric, property taxes, vehicles, internet, phones, water hoses, wheel barrows even, etc.5. 

Examples of qualified expenditures include costs for structural work, electrical and plumbing systems, roofing, and other improvements necessary for the rehabilitation.

I would set up hookups for water, sewer and electric according to code and write a lease for it that makes sense.

Electric?