You need to hire property management -- if the tenant has a plumbing problem, you cannot personally show up with tools.

Have them treat it the same as normal plumbing except no chemicals.What is market value? 

Yes, this is a SFR.The renovation came in right under $40K with updated electrical and plumbing, renovated bathrooms and kitchen, new AC, all new windows, new hot water heater and a roof and furnace both four years old.

I am a licensed General, Building and Plumbing contractor in the state of Florida. 

I would assume it has plumbing and electricity hook ups.  

The laundry room already has plumbing and electrical for a W/D and there is a bedroom beneath so I won’t have to break through the foundation for drainage.

Mobile homes $45k each (includes installation, pad, electrical, plumbing and skirting)5 year warranty on each mobile home.Taxes are $1500 year for everything Insurance about $2400/year total Rent will be $900/month per unit.

Apparently there are five basic types of plumbing pipes per this article with copper being fairly common.

I will agree though there is a nonvariable time to plumbing, power installation, etc 

Some people will live in a place with leaking roofs, no heat, leaking plumbing, etc.