Checkbook control does offer more flexibility, but puts the responsibility of understanding the rules on the IRA account holder.  

Everything is driven towards automation for both cost efficiency and sales effectiveness reasons.Making perhaps a great oversimplification, but wholesaling to me (as I creep on the board) is lead generation for flippers and holders.

The senior debt holders (if applicable)2. 

(a) At any time not less than three years after the auction or sale of a tax lien but not later than 10 years after the auction or sale, if the tax lien is not redeemed, the holder of the tax lien certificate may bring in the circuit court of the county in which the property is located an action to foreclose the right to redeem and quiet title to the property in the name of the holder of the tax lien certificate.

I had previously researched the property and understand that there is a mortgagor and two mortgagees (a primary and a junior lien holder) associated with the subject.

The world is cluttered with big debt holders who are basically BROKE.  

You're right, the holder of a mortgage on improved property would typically not let it go to auction.

Depending on how the waterfall is structured, the preferred return holders will have first rights to the cash flow, typically an asset manager fee is the only component paid before the preferred share holders.

this could provide the most financial gain, contact the owner, inform them of back taxes (dont be surprised if they didnt know) here negotiating comes in. offer your best price and then be prepared to offer the bank lien holder an offer as well. 8.

However, if I had to choose some spots you want to look for neighborhoods with holder homes (avoid the southern suburbs) and try the east side out to Troutdale.