Also, if you took possession of the money from the sale, it would not qualify for the 1031.

Often times tenants will list cars, art work, Jewelers, Persian rugs.  

It's state specific but to makes these loans you generally must have an NMLS license, which some HMLs possess, and willing to endure the brain damage, risk, expense, paperwork, and reporting required with consumer purpose loans.

If not, they'll give me a quitclaim deed.I can't seem to find out if the house was actually bought by the bank at Sheriff Sale and the junior lien wiped clean, or if something like a deed in lieu of foreclosure was how the bank got possession.

Buyer will be responsible for the possession of the property upon closing.

This seems like a risky deal, but a good one because there's someone who might have some title to the land who wants me to have it, the quit claim deed is so cheap and there are no back taxes.Note: I do not have enough capital to fund a construction project immediately, but I could start the adverse possession statute of limitations by fencing and clearing the lot.What am I missing?

Two of them were “3rd offerings” so I take possession immediately without the year grace period.

Offer flexible possession terms for the seller to get moved out, find their new home, etc. 

I recently bought a tax certificate on a property, found out it is abandoned, and am working with a lawyer to take possession of it and get clear title.

I can't deliver possession.