If the islands can clean up quick I think we will continue business as usual. 

A 1920s home with new plumbing, updated electric, and a new furnace might be in a better position than something from the 1990s.

10% is probably a little steep, and like John said, a flat fee may be more reasonable.Setting up a proper STR is not cheap, but once you are set up properly, you deal with routine breakage.I recommend managing yourself and saving the 20% personally, getting a rockstar cleaning team and a reliable handy person, using something like Hospitable that can help automate messaging when listing, and reading the book from the bookstore here called Short-Term Rental, Long-Term Wealth.

Put locks on each bedroom door so individual tenants have security of their personal belongings.You need a really good set of rules regarding shared common space, cleaning, kitchen use, bathroom use, etc.Be very clear about the rules up front, and selective about who you put in there.

Originally drafted to prevent landlords from using security deposits for cleaning or repairs, the bill was amended after opposition from the California Apartment Association (CAA).Landlords will now need to photograph rental units before tenants move in, at the end of the lease, and after repairs or cleaning.

Does anyone have any experience with financing a clean and sober home that is already in existence? 

I have a cleaning crew in to clean the common areas every other week. 

Listing, optimizing, customer relations, cleaning and a whole lot of other stuff are involved. i would like to connect with you to see how I can be of assistance to you.

Some land was sold off years ago without this issue, but I understand why the attorney can't guarantee clean title.Has anyone dealt with something like this?

They also have very rigorous requirements (again test results near or just below the detection levels) for getting a "clean" house.