Now, seems like a simple task- take the old door off and put a new door on.

I started off with 3 houses on a lot and another house two lots down.

The goal is to complete renovation within 6 months in between guests and then refinance in the next 1-2yrs to pay off the seller in full!

Quote from @JooYung Choi: You could consider going for a STR in a vacation market that will give you way more cash flow to pay off the HELOC quicker.

During the tour, we will guide you through several key areas where we actively invest and showcase a selection of available properties—many of which are off-market opportunities.Courtney, who leads my investment team, can assist you further.

Since then I have located the area where they entered and sealed it off, however I'm having trouble killing the ones currently living in the attic.

We are considering selling it and investing the cash we get from that in another deal or paying off our consumer debt faster!

For your first one don't bite off more then you can chew.

I think your starting point is off - way off. 

And by not biting off more than you can chew for the rehab.