Regarding risk my perspective is that it is much lower than typical common equity deals in that there is a 25% cushion re valuation drop before the pref equity holders would be impacted.

You could ask the current tax lien holder if they will sell you the liens.

However, an option holder won’t be able to stop a private sale from occurring (unless they find out about it before hand and obtain an injunction); the option holder would most likely need to initiate legal action after the fact. 

.- All hardware should be present, property secured, and in good working order (e.g. door stops, light fixtures, faucets, toilet paper holder, hand & bath towel bars, drawer/cabinet pulls, hinges, door knobs/locks, etc.).- Carpets must be professionally cleaned or, if necessary, replaced if there is excessive wear.- The yard must be in good order with no debris, either natural or other.

I have remodeled the unit completely prior to putting it to rent, including addressing pre-movein readiness checklist I was given by RL after they walked through the unit (small list of punch items like toilet paper holder, cleaning unit, door stopper etc.).

Btw, we all remember who were the biggest culprits in GFC, they were the ones that Eric Holder said were too big to prosecute.

Another issue is the gas station includes a liquor store so opening a new company to buy out business would mean losing the age of liquor license which may be beneficial in the future if they pass a law on permitting more liquor licenses to existing holders. 

Just a short list its like 50 ways to leave your lover there are 50 gothcas in sub to. 1. the easiest for everyone to understand the sub to violated the Alienation clause in the mortgage or deed of trust and holder of the mortgage DT / Note decides to call the note due and payable and starts a foreclosure. 2. foreclosure started and the person who bought sub to has no means to pay it off or refinance it and the original sellers credit get trashed and if its a deficiency judgement state even on an owner occ like Texas lender sues original seller for the deficiency. 3. this kind of investing or acquiring assets tends to attract those with limited resources so they have no ability to fix things they decide to scale up and then it goes out of control and sellers are really harmed4. deal goes south and original seller sues or files complaint with AG. 5.

The part you are missing is if that claim were to arise why wouldn’t the plaintiffs attorney simply list the deed holder in the claim?

This includes the seller maintaining property insurance in their name with the buyer added as additional interest and mortgage payments being made from an account in which the seller appears as bank account holder.