I'd be suspicious of the 17 cap on that 16 unit.

It's suspicious when the same deal is presented by multiple parties.

Let them know it seems a little suspicious that you get hit with repairs every month and ask them to explain from their perspective.  

I do wonder at your monthly PITI and I'm suspicious the home is not in the best of neighborhoods.  

They moved in, paid on time and didn't give us any issuesThen we get a call that the dryer stopped working - they overloaded it and claimed it wasn't their fault - we paid for itThen we asked them to change their air filters - They gave us an issue with it even though it was in our leaseThen the washing machine motor failed - they loaded too many clothes - they didn't pay for it and we continued to keep themWe then decided to visit their apartment because we got a bit suspicious and wanted to make sure things were not being damaged.

I have wealthy friends. do I borrow money to buy a house do they buy it in there name if I borrow cash from them and buy it. will it look suspicious and the bancruptcy court will think I had hidden money. just don't know how to start. thanksmike

However, mortgage companies may look at a large transfer like that suspiciously and you may have to season the funds for a couple of months.

Long term MLS listings in a hot market like Phoenix are suspicious.

Also, I'm all for mentions of dealings you have with anyone you meet on this site that are less than honest or suspicious.  

I think that would be more suspicious because you would be connecting a seller to a buyer - that is why there are license laws.