Is $0 down possible if price is well below the market?

[Hemant Bhagwat]

I have been reading about "no money down" investing and have a very basic/ stupid question -
I came across a seller that wants to get out of the rental property - mostly due to out of state ownership and one bad experience. It's a SF house, which has new tenants and managed by PM company. If I can get the property at 70% of the market value, do I still have to pony up some money for down payment? Or will the lender provide 100% financing, as the loan to value is less than 80%? Example - if the property value is 100K and if I am buying it for 70K, will the lender accept $0 down? (Note - property will provide positive CF at this price/ loan)
I am a newbie and trying to get my first deal! May be this is a very basic question, but any input is appreciated.

Thank you,
Hemant