We cannot get any  new mortgages in my wife's name as she brings in no income*I've started to investigate portfolio loans (commercial loans) but they are way expensive and will cut into most net cash flow, or I'll have to put down much more thus reducing monthly ROI.   

Is the landlord expected to hire a private investigator to determine the value of the tenant's assets as part of the due diligence process?

But both deals with some good investigative work and due diligence have proven to be well worth the effort

Suggested Approach: The listing agent realized there was a discrepancy in the square footage measurement prior to listing the property and prior to closing but did not investigate the discrepancy or expressly disclose the discrepancy to the buyer or buyer’s agent.

Let them do the work of investigating the zoning questions, they do that all the time. 

I've done my due diligence with regards to finances (paying down non-productive debt, accumulating cash reserves) and have begun reading all of the recommended books per the ultimate beginners guide.I need some assistance in the following areas:Analyzing deals: I have calculator (link) that uses assumptions to determine if the property merits further investigation.

Some sharks are lurking to part you from your money.Have fun hunting and investigating!

Is there any further investigation I can do on whether there is a tank short of getting access to the property.Thank you in advance for your replies.

I tried to do some investigating to see if the inspector and potential buyer knows each other, but so far, I can't find a connection. 

The plumber will change the water heater, but will not investigate the home's plumbing system outside the water heater.