Cash out from down-payment and continue buying?

[Lin Yin]

Guys,

I am new to real estate and to this forum as well. I am in the Boston area. So I plan toget together more than 500k, put down 20-25% on 300k properties and buy 6-7 of them and rent them out.

My question is, is there a way for me to cash out the majority of the equity in the 6-7 homes and reinvest them into down payments for more properties? If yes, what kind of loan/mortgage would it be? From my research so far, HELOAN is only on primary residence, so what about cash out refinancing?

Let me know your thoughts, thanks!