So, if your comps and math are right on - then we need to be contesting the appraisal. 

Building 8 or 16 unit townhouses/cottages takes more time in the planning stage, but when you avg it out on a per unit basis it's no contest. 

I've only had to do 1 eviction and it took 3 months + if you're afraid of the taxes going higher, then make sure you contest them every year.

Behavior is important, but it could be said finances are more that than mathematical but we're on a REI board where fabricated pro-formas/inputs and the FOMO contest it deeply. 

The offers that don’t close reasons range from property not passing inspection; financial information provided (or assumed) not accurate; buyer couldn’t obtain financing or didn’t actually have the funds; buyer merely looking to tie up the property with a contingency clause and “flip” the contract; buyer hoping to lower purchase price by “haggling”; seller never having an actual offer , often just a verbal expression of interest; seller and buyer get into a “pissing” contest; buyer credit issues pop up; buyer indicted for criminal activity; and about 100 other reasons. 

This property is an example.2) It helps to contest the property taxes.

Many of the properties require significant repairs, have clouds on title, will involve contested and difficult evictions even after the auction, etc. 

There isn't even a contest.

They can contest the Unpaid balance at anytime and you have an issue.  

Anyone that promotes this hard and runs contests to be the first one at 1pm on Thursday to get this deal, you know is not a professional International realtor, but a pro marketer and Scammer.