But were "hoping", with the proper reovations we can increase the value to sell for atleast 200k. 

Regarding building an ADU, again it depends on your goals, but the ROI on ADUs in Denver aren't that great and a lot of appraisers don't know how to value them properly since there aren't many comps, so refinancing could potentially be an issue as well.For your first house hack, start simple and go from there.

I’m in business so I expect proper communication of project progression but I’m not getting it from my general contractor.

Failing that, sell the unit as you cannot properly manage to protect your investment without controlling your utilities. 

You can print this one on your computer, no need for the “official” printed forms.W-9 asks them to enter their name, address, and tax ID – which can be a SSN, ITIN (for people who are not permanent residents) or EIN (business tax ID).

Do they remain to be tenants until they are officially given notice to vacate?

Probably need more information on your question to properly answer, but here are some thoughts. 1.

My question is, how to do i properly analyze a cash only offer. 

If Crawlspace make sure low point drain is working properly.   

I would like to know if there is a method to properly and fairly analyze the correct offer for a cash deal.