best way to pull cash out of rental?

[Brittany Ware]

I currently have one rental property that has about 70k equity (worth 170, owe 97). I would like to start building my portfolio by adding some small multi-family units and will need to pull the cash from here to do so. I would love to hear thoughts on the best way to do this.  Home equity loan? Refinance? We currently have a 3.25 interestest rate and cash flow about 400 a month from this property. Thank you in advance!