Brian Adams Looking for the right bank, and what all do I need to know going into the deal being that it's larger then what I've ever done.

Something is only worth what someone else is willing to pay for it, so if they agree to sell below market that is their choice.

However, if the numbers are on the tighter side then forcing the repair might be a good option to use and still close the deal.I would assume that if you were able to get responses from a number of others on the site they would probably say things like I am going to list here.1) Problems can seem small and simple at first but grow larger in a hurry - it happens.2) Depending on the type of shower/tub installed in the above unit it may be more than a simple fix and get into much more money than you think - you won't know until you open the ceiling for sure.3) After the plumbing repair you could be looking at mold potentially in the joist spacing area between units.4) Depending on the length of time the issue has existed and been patched to get by you may also have damage to the wood - joists between units and or sub floor issues under the upper unit tub/shower.5) If there is insulation between the two units, you may have soaked and degraded insulation that needs to be replaced as well - good news is that rock and insul are cheap to replace.6) OR......... you may have someone open it up to fix it and its just a simple plumbing issue and is a quick and easy fix - totally possible too.Just as an illustration, I went to replace a bath faucet for an accountant friend of mine yesterday.

I suggest consulting with a local geological engineering firm to evaluate the options available for that specific site.The choice of foundation vs. crawl space depends primarily on two things as I see it, what is the market there and what is the structural fix for the soils.  

Success is a process, failure is a choice

I've also heard some larger property management companies will offer that service, though I'm not involved in that side of real estate enough to have seen it myself.

In my case past personal choices got in the way. 

if you want larger i can chime in from what i have seen but not personal experience.  

I am currently screening an application and the Tennants are moving from a small city in one state over to a larger city for a new and better job.

It's their choice, but if they can't clearly define the criteria they will use when you bring them a deal, or that you can use on your own to determine your specific costs in advance, how can you do business with them?