While shopping for insurance it was uncovered the building were built in 1997 vs 2009 as shown on MLS.

Your analysis should uncover opportunities for renovations.For long-distance managing check out Guesty or OwnerRez.

If you would prefer to invest locally, driving your market and tracking down the ownership group of properties that seem interesting can uncover groups.  

In your due diligence period you should have uncovered they weren't paying.

You  have   to judge based on what  else   you uncovered   the kind of  threat    he  is. 

. #2 The inspection is going to uncover the issues anyways and you will pay for it. #3 Renovating is the best time to fix these things because it is likely the walls will be open so that the repairs are much easier. 

Very important to uncover these things prior to entering into a purchase agreement.

With every deal you do, there is a chance that you will uncover more issues than you underwrote for.

It’s a good point and I should ask why am I being charged for an uncovered lanai. 

Over the past 25 years we have uncovered some massive disasters that we fortunately were then able to cancel the contract on during due diligence.The best guy in the U.S. for doing a Phase I is Mike Renz with Renz Environmental in Ohio -- he goes nationwide.