And use the other $50K as a down payment on a $250K property. 

Yes it exists, but as the above poster mentioned, lots of hoops to jump through. The

I have a possible seller financing opportunity, where I would be the buyer. 

I am a newbie in BP, just started listening all the podcasts, fascinated by the community!

Both properties have a substantial amount of equity that’s essentially sitting idle.Would it be a good idea to tap into this equity (through a HELOC, cash-out refinance, etc.) to fund future fix-and-flip projects or purchase additional rental properties?

Hey Phillip, welcome to the community!

There's a monthly cash flow 101 game in Bloomington through MN REIA.

But thanks for the mention @Jay Hinrichs I'd invest in my backyard, outside the city of Seattle.

I would rent the house to her.

Nearly all of our business came from the relationships that our originators had built over the years.