If you don't make a downpayment, and you have no mortgage payment, how do yo pay for the property? I suspect you mean either/or??
Can you buy a home with no downpayment? Is this question related to your question on foreclosures? Buying a house pre-foreclosure is much like buying any other property, unless there is insufficient equity to reach a traditional closing. If you try to buy a property at a foreclosue auction, you wll need to follow the rules of the municipality/county where the auction takes place. In general, yes, you need at least 20% down, and balance in 30 days. That is a general typical comment, and you need to check in your area to see if it might be different there. If you buy pre-foreclosure, meaning the owner has not yet lost title, you need to make a down payment andmortgage the same as you do with any purchase. There are options for some properties to purchase with minimal down payment.
The only way to not have a mortgage payment is to pay the amount of the purchase price in cash.