I did exactly what you are describing and I've used a HELOC on my personal home to do about 10 BRRRs, so it has worked well for me. 

I'm a fan of using HELOC or LOC if you have the equity.

Texas is okay but higher taxes and can't get a HELOC. 

The more traditional way, assuming you actually have adequate equity in your rental, is to take out a HELOC on the rental. 

Now your fully renovated home is getting top dollar rents, you could probably refinance too since rates are poised to go lower (lowering your monthly obligation), you could open a HELOC before you move with the extra equity and use that to fund your next deal and now you have 2 homes! 

Finance was a combination of a few different vehicles and ultimately ended with a HELOC which was then used to fund multiple other projects over the years.

I know this might seem insignificant to experienced investors, but I just got the appraisal back from the bank this week and have access to about $145K in a HELOC so I'm creating CCCs around this number. 

@Max Nathanyou won't be able to get a loan "for the down payment" specifically, so you'd need cash from some other source, like a HELOC or a personal loan. 

I would also only do this if both properties have solid appreciation potential.If it was me, I’d consider trying to get a HELOC on the first property and use the funds for a flip or a BRRRR so I could pay back the line of credit within 6 months and then go do it again.

I’m trying to get a heloc or cash out refi on a primary residence duplex.l under FHA.I have great credit but modest incomeWife has bad credit with better income therefore I don’t believe we will qualify for heloc.Our plan was to get heloc to use as a down payment on another house hack or general investment property.So far our mortgage company said they could do the cash out refi which would raise our mortgage from $800 to $1200 (current rate is 3.62) and the rate would go to 6.6To pull out hopefully 30-35k maxMy concern is if I do the cash out.