Unless the property has unquestionable value (which is almost never the case with land), it usually won't be enough to act as sufficient collateral for most lenders, not without some kind of additional guarantee from the borrower (i.e. - you).I wouldn't necessarily say "never", but I also wouldn't expect to have much success with this unless you're bringing more substantial collateral to the table.

Risky is a relative term related to ones ability to analyze the collateral.  

I'll make interest or take the asset serving as collateral. 

Only it's collateralized by Real Estate.You have no control.

Let’s put it in writing put your house up as collateral.

I have decent credit but I do not have the downpayment or collateral I'm sure I will need.

IV also found a local regional that would do a cross collateral deal.

Can I do a land contract for the deed and finance the down payment to the owner with a secure line of credit collateralized by the property?

Your rental property will act as collateral. 

Texans can establish lines of credit using up to 50 percent of the value of their homes as collateral (as opposed to the 80 percent allowed on standard loans)."