I spoke with an investor and he mentioned that he was bothered by the fact that his agent insisted that he go to the agent's office to sign a buyers agreement which lead to the deal falling through because of time constraints. 

Does the property manager typically manage the contractor or does that fall on the syndicator? 

The chances are very low without the bond, also most contractor's bonds cover negligence and fraud, the "performance" part usually falls under negligence aka leaving a project unfinished, charging too much, etc.

I have fair rental value coverage in my insurance policy, but I don't know if it will apply since the tree didn't fall on a covered structure.  

Don't fall in love with a property @Lincoln Selk.

However, try not to fall into the common trap of over educating/analyzing.

After having 4 potential deals fall through I have found another potential deal on auction.

Fortunately, EastLA falls right outside rent controlled areas.

If you are just investing don't fall asleep on your money, that's the only advice I would give.By this I mean always be vigiliant about your money.  

However, each deal that I express interest in ends up falling through the cracks somehow.