This has resulted in an opportunity for us small note investors to help "heal" the wounds of this event, help borrowers if possible and make a profit in doing so. 

That would be rubbing salt in the wound. 

But of course I am still an amateur so I probably don't know what I am talking about. lol@Andrea Belfon Update: I wound up buying a house in the Ashview Heights area.

Wound up being a bit contaminated and needed remediation.

Likewise, if you overpay by a bit, time will heal most real estate wounds.   

I think it's important to realize that sooner or later, every investor will have their share of wounds to lick.  

You might be best served using the strategies above and taking this as a lesson learned for the future.Overall, I am concerned that this contractor does not have good attention to detail if they missed this in their quote so I would be on their case about proving the rest of the job is done right.Not to rub salt in the wound but $9k for an 11 square roof is outrageous in my area.

Suffice to say publicly, veterans aren't only eligible for disability benefits from physical wounds.

I am often contacted by BP folks who have invested in real estate who wound up somehow on "a cruise they didn't sign up for."

That said, it sounds like you may have made an incorrect calculation of the value and depending on the exact situation, it may be better to eat your loss, chalk it up to a paid education in the real world of RE and don’t repeat the same mistakes on the next one.As J stated, trying to keep it and pile onto the mistake is often not the best road to take, jump ship, lick your wounds, and get back into the fight.