I started with Ken McElroy's books, because 1) clearly he knows what he is talking about given his track record and trajectory and 2) because I had easy access to them. 

By providing the necessary funding and covering renovation expenses, we ensured the project stayed on track and within budget, leading to a profitable outcome.

HELOCs are not available because they are residential loans guaranteed by individuals and what you seek is a type of commercial loan or credit line which are available to seasoned companies with proven financial track record.

Given your recent small multifamily inheritance, this could be the right track for you. 

Given their track record, I’ve been lenient because I feel for them and understand how hard it must be for their family (I also have their $1,900 deposit). 

Private lenders or even creating a small syndicate with a group of investors might also be worth exploring, especially since you can point to your uncle’s track record and your own experience managing rentals as a selling point.If timing is tight, you could look into a bridge loan to secure the property while figuring out a more permanent solution.

Google, TrustPilot and Reviews.io can track peoples IP addresses.

Have been tracking the news on insurance which surprisingly to me- is not expected to rise in Colorado, post the LA fires.

You must find a team with a long track record of experience that you can hold accountable.

I keep scans or pictures of all of all letters I send this way including the letter as readable before it goes into the envelope which includes the tracking number written on the letter, plus the filled out certified mail paper and the envelop after its addressed.