Then there was a domestic incident and HE got an order of protection against HER.

ESPECIALLY WHEN IT COMES TO PLUMBING AND HVAC.

Electric and plumbing was modernized but there are still some galvanized pipes that have issues.

There are things I know I will never look at doing myself: plumbing, electrical, roofing, installing hardwood flooring, bathroom remodel, and I'm sure many more! 

At the same time, have the washing machine plumbed correctly so you wont have to deal with this headache in the future.You should then go through that house with a fine tooth comb to see if there is any other issues you haven't noticed.

Upon having to evict the tenant, I noticed that the plumbing was backed up and still cast iron. 

Plumbing wise city of st pete charges about $1200 for the extra meter and the plumber fee depends on the trench, length and trees they have to cross, I've seen prices in the $4000-$6000 range.  

We wanted to run plumbing to the back so that we could make a livable dwelling and rent it out.

And I think this where individual LP expression may be useful.Operational Risk,  There's one GP that's losing money because eviction cost, another GP losing money because they miscalculated insurance cost and another GP is losing money because.......plumbing issue.

I know it depends upon where we are located but I was hoping to put some numbers in my analysis.For instance, I have assumed that it will cost me $1,000 to add each meter plus any required internal plumbing/wiring to get everything run correctly.