I'm not sure where you are, but if you need a dozen permits that will cost 20K and take 2 years to get (I'm being hyperbolic) the juice may not be worth the squeeze.Good luck!

The juice might not be worth the squeeze in that case.Even in this market, there are great deals out there.

if It were me I wouldnt be all that worried about the plumbing if the only sign of settling is above a door/opening. if you have plumbing under a concrete slab and see settling I'd be a little more worried about bellies in the underground pipe.

@Stephen BellI am located in PA and the local zipcode average is 4.7 (still above recommended EPA level of 4) and most of the homes in that area probably would have levels higher than 4 and the mitigation system anyways installed.

Here's a very basic explanation to get your juices flowing:Assume a house costs $200,000 and rents for $1,500.

They work belly to belly with people, not random companies.I have a biz name on my cards for tenants. 

Given the uncertain market, i have made my own analysis numbers work on the conservative "bearish" numbers from the Bigger Pockets platform, but start my rent rates at the more aggressive Rentometer numbers to squeeze more juice from the deal. 

This is where you make your money, buy low , fix and then sell or cashflow.I would say about 20% of the foreclosures that I assess for banks are properties that investors purchased and went belly up on.For instance , a duplex just came up as a REO in my small town, I had worked with the former owner a bit and knew the property quite well.

The juice would not be worth the squeeze for me personally, but if it works for you then that's great! 

If you want to really juice your cash flow and are willing to do the work yourself, you might consider the STR route.