Louis, but I think I've uncovered a few of the best ones over the last 6 years.

The final unit is in fair shape so changes/upgrades should not take long, unless I uncover something in the walls.I have already refinanced both properties, so much of my cash is back out.  

If you're an owner occupant and your inspection uncovers issues that were not disclosed in the property condition report you can generally get out of the contract and have your EMD returned. 

Do a site search and you may uncover these.

Straw-man deals (wholesaling) acting as a facilitator, getting in and out of some transaction that is unorthodox or not common and facilitating, what can easily be seen as financing, a matter that has many avenues to investigate to uncover some aspect that could open the door to claims of fraud.

We ultimately ended up tearing down the addition because we kept uncovering new problems with it:We couldn't bypass the city and go straight to the county to get the square footage accounted, and the city of Seatac has a reputation for being unreasonable.  

The deal was then handed off to title and escrow which uncovered several outstanding liens on the property as well as two mortgages, none of which was disclosed by the seller when signing the purchase agreement even though my agent specifically asked him.  

During the rehab, they uncovered some early American artifacts that fetched quite a lot of money at auction.

If you uncover any issues, check with the source and find out what options are available to get resolution if you purchase the property.

While peeling up stick-on tiles stuck to the concrete slab on an addition to my recently purchased house, I uncovered a 2' square hole peeking out from a wall.