(banks may make an adjustment for an exchange rate provision) Usually, other real estate assets would not be considered as collateral, but the liabilities will be part of the equation. 

Realizing the liens had value, I started questioning real estate lenders and agents asking them if was possible to put up my TLC as collateral for a loan.

My thought is either as transactional funding to acquire cash flowing assets (buy/hold or flips) or as secured collateral with a private lender for a LOC for the same purpose. 

If it's paid off and held in the name of the LLC, then you should be able to get credit the traditional way no problem, using the real estate as collateral.

You can use them as collateral for a loan on another property or invest in the market.

The tricky part might be dealing with the hard copies of the collateral.

@Eric WatermanYes it can be done.Several ways to accomplish this:First way is to get the HELOC in your personal name using your home equity as collateral.  

The equity in that property can then either be used for a HELOC or cross collateralization for another deal.

And these factors can vary significantly between higher end homes and lower end homes, often for me, it makes sense to get a lower return per flip but have a higher quality collateral.

There are a couple of differences here:  1) the moment you touch that $1MM cash, you get a margin call because the cash itself is the collateral.  2) when your stock tanks, you get a margin call.  3) the stock goes up, you sell and you have to pay capital gains.