I’d appreciate your insights on this matter.Best,   You know this is a pretty interesting point, We contracted a service to help us with all this and I did ask this question, and I was told that Tax Liens sold in auction did not have the ability to reclaim the debt. 

If you're talking about Sheriff Sale you will need to go to the County Clerk and see where they handle the auctions.

There is a SFH my relative is selling at auction due to personal life circumstances.

There is a SFH my relative is selling at auction due to personal life circumstances.

Directly across the street from my building is a 9 unit building currently up for auction for back taxes.

Does the high bidder at a foreclosure auction obtain an equitable interest?

I acquired a 4b sfh through an online auction about a year ago and completely gutted the home and upgraded mostly everything.

unlikely LL will ever need to auction off the storage contents.  

Those little parcels of land are dangerous at auctions.

At the auction it gets bid down to 3-4%.