The complain states that it is the primary lien, but the title paperwork is attached to it.

You can find the process on the city website or call the building department for the process, checklist and paperwork.

I don't have a ton of experience here, but the first thing I'd tackle is the legal / paperwork side of things.

So when pursuing an off market deal I'd essentially have to be clear from the get go that I'm solely interested in financing?

So you essentially won't be able to access your HELOCs. 

If the property is inherited or gifted WITHIN her family and the correct paperwork is done the property tax should stay set at the now prop 13 level. 

With all park owned homes, you lose the power of the "homeowner" mentality and essentially have a lower quality apartment with high maintenance requirements, and the tenants can pack up and leave anytime. 

The only problem is that you are essentially stuck renting it out on AirBNB during the times that you aren't there, or else it likely wouldn't be available for you to stay in next year when you go TDY again. 

I would get an inspector for the physical part of the house, but I was wondering for any thing paperwork to research Thank you

It's difficult to narrow the focus to what is essential to do at this state.