I discovered that an auctioneer friend of mine was having an auction.

He's got some secret method and exclusive group that you "need" access to to be successful.

If you come in after that, we cannot guarantee a timely filing (top secret, and only on BiggerPockets, we bake in some flex in our system and can likely file on time).All our extensions are client requested.

To get started, focus on discovering deals by networking with investors, pursuing probate leads, or searching for abandoned homes.

Trace the filings of the corporation you discovered— might give you some clues.  

Moreover, during the inspection process, we discovered an unexpected basement space, adding further value to the property.How did you finance this deal?

Then you've opened Pandoras Box and you instantly have the guys in the HazMat suits with fans and plastic sheets all over.....and a bill for $5000 for something you could have done for $50.I used to do this kind of work on the weekends when the city inspectors weren't driving around :-) haha , one time the hazmat guy come down to check for asbestos checking ; it wasn't that bad it's actually 2k and insurance company for that in my case.( To be honest, the house with water damage is good to buy because it scares the potential buyer, but if it's located in good location we could sometimes purchase the house with 10-30% discount lol but nowadays even FTHB knows this secret too so they still overbid the house )but yeah, to the OP, if you want to be sure you have to cut the drywall, the more the better.

You discover his unauthorized dog trashed the carpet in the living room, destroyed a couple doors, and the entire place needs cleaning.

Thanks @Dewayne Perry, that is what I've discovered too now that I've installed one. 

Be wary of any of the courses that profess to teach you the secrets of getting rich in real estate and in fact, the only ones getting rich are the ones selling the courses.