Top concern is your safety and that of your family.

., where the simple act of securing permits to build an average “granny flat”in an average backyard can turn into an epic battle with the city’s Department of Building and Safety, that could take weeks, if not months.

I Love the safety and Due diligence tips on your end.

In understand for yourself as an arm-chair quarterback forecasting seems on level with asking the magic 8-ball, but for FT Senior industry/market experts who literally make our living knowing what general public does not, as it is our career to advise persons, yeah we darn well better have some excellent insight into where things are going and why, by what data, for what reasons, how can it be measured, weighed and tested true in a scientific manner vs, "well, I think ___ because, well, thats what I think". 

However, in 2018 they were charged with a DUI, and in a separate month, charged with possession of a controlled substance while armed with a loaded firearm.

Check your state laws, but you will likely need to get your tenants out of the property during the remediation for their own health and safety.  

So you have a safety net if hell freezes over.

They won't even let me into the property citing safety.

That will create the paper trail for them.The City does need to assign addresses for fire and life safety, you should have been assigned an additional/new address in the "MIS-Addressing" review for the building before.

was in a similar situation , when you finance through LLC - it always is a commercial loan.. the interest rates are going to be higher as well & would change typically every 5 /7 years like a ARM .. the lenders also take into account Airbnb revenue while appraising your purchase which is a big plus as opposed to residential mortgage lenders who wouldn't consider STR numbers.. if you decide to do it residential ... you can later on do a deed transfer and move the title over to ur LLC ( some lenders do not typically like it )