It just came back on to the market after failing to be sold during the financing stage for the second time in a row.

I would also want to know why it failed in the first place (poor management, no demand?)

you only wasted a few days. put it back on market.have your agent put in private remarks.. sale fail no fault of property or seller.

It’s not really a “lien” but a type of “interest”.This a strategy, and sometimes an extortion type game, where they try to prevent you from selling to someone else.....it’s Proper use is to protect them when they Do have a valid contract on the property.Clarification needed: did You refuse to close the sale or did the buyer fail to close on time?  

You can always try giving her more cash for the keys to get her to vacate but if that fails, then eviction will have to be your next course of action.

You signed a contract , unless you fail to perform on your end , builder is  in breach of contract.

If the tenant fails early on before you resale money can be lost.Additionally whether you reface a building or tear down can depend on age of the vacant building and what it would take to attract a new tenant.Example if you are getting the land and the building for dirt cheap then likely a mom and pop tenant would go in a decades old building with just some paint and other things to open up.

You will either get lucky and think you know something, or fail at which point your bank account will remind you that you don't know anything.

I am close to New Jersey and come across so many potential deals and the biggest expense in a deal is my profession so I feel I have less risk failing.

Failed 4 point inspection on everything.