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. 

@Jakob Kegel from what I’ve seen on the mls the bank took over possession already and it’s a big bank.

In other words, if someone has not taken lawful and exclusive possession within 6 years after the auction, then the former owner can get the property back and not have to pay the investor anything at all. 

The clauses in your contract, "right to market and assign, an automatic extension, out contingency, full profit disclosure, possession clause, expiration date and it should be in docusign format."

Affordable houses also offer the opportunity for better returns from the minute you take possession of your property.2.

Which is great as I have about 6k of unexpected cost-such as 2 floor joist completely cut in half by plumber from 1940 need repaired, the discovery of mold in walls, the tree that fell down 5 days after taking possession that cost $2k total to have removed, and a host of other small things.