Some lenders may accept pledging your property as additional collateral for a purchase at a blended loan to value.

While anything is possible, in this situation I don't see a lender allowing those two assets to be cross collateralized.  9.  

Can you provide current collateral value, collateral state, anticipated sale price, unpaid balance and terms of existing note, and the payment amount and rate the new buyer is asking for? 

You'd probably be better off holding the notes for a longer term.....after all there is interest and your collateral should increase in value while your risk is reduced, you can't write a new note under similar circumstances, but the interest does decrease while remaining the same on amounts outstanding.There are new laws governing this now and you'll need to comply if you are going to be in the business of selling and financing your deals.

If you are simply looking for a lender to be a junior lien holder, they will likely require you to pledge more collateral. 

I'm looking mainly at 'no money down' methods since I don't have any cash saved up nor any equity that I want to collateralize.

I do think there will be a second wave as the big boys sell off unwanted low value or otherwise distressed collateral assets from their portfolios. 

Hi-Seeking to give out loans to property owners who hold the property in an LLC (multi-member, if that's relevant at all). For anyone's who's done this...-Does it make a difference if the loan is made out to the LLC v...

You may be able to get a discount/better payment terms when a lender has secured collateral.

Option 4: Land contract with just your $15k down, and put your other 4 unit as collateral (or 2nd lien if it's financed).