We use these factors in this order of importance (feel free to create your own):1) Tenant pool credit score2) Location => Neighborhood3) Property condition & amenitiesClasses are not defined for the SFR industry and are relative to the area.

Sadly, you ran into the situation right away where you need to play hardball.The property owner has defined rights of entry.

@David S RobertsI'd venture to say those nearby properties are just ignoring the law.Most cities and counties in Colorado have well-defined STR requirements, and if you meet those, then you can operate a vacation rental. 

I'm not advocating he establish a new LLC without using an attorney or registered agent to define the bylaws of the agreement.

Additionally, the property has a pre-existing designation as an Artist Dwelling.I’m looking for insights on the following:What defines an Artist Dwelling?

I also look widely for HELOCs for my own rental portfolio and am not seeing danger signs there, either, defined by me as lenders cutting off lines or no longer extending lines. 

Investing in medium-term rentals, which are typically defined as tenants renting properties for more than 30 days but less than a year, has become a preferred strategy of many investors.

Have you defined your investment strategy?

Most leases typically have two terms: (1) defining how notice will be given and (2) defining where notice will be given to each contracting party.

In reading about RSO in LA, it seems to be defined around regulations for LTRs, not specifically MTRs.