No money down for a rental deal....is it really possible?

[Yanic B.]

So I have a rental property which is under a conventional loan but yet it cashflows with the current tenant. I'm wanting to venture into rehabbing/flipping but also have been finding some good deals on true rental properties (already occupied with tenants and set to cash flow from day 1 with no repairs needed). The obstacle I'm encountering is that the [conventional] lenders I'm going through keep demanding 20% down (which I don't have---the money I have is being saved for use on rehab deals). I'm getting frustrated because of the "no money down" concept appearing to not be a realistic thing in my attempts to fund these rental deals. What am I missing here? Thanks in advance for everyone's input and suggestions.