So This means that in my not-so-hypothetical example, I could convert this 9bed 3bath Multi-Family into 12 Condos sharing 3 bathrooms, 3 kitchens, and a Basement.

Perhaps we need potential forum users to take a basic etiquette quiz before they can post!

Also is it in an attic or a basement and how is access.

He said something like 20k to 50k for a basic ADU but that's nuts.

I will assume somewhere in the lease it states that the tenant is responsible for a basic maintenance and upkeep of the property.

You don't need to know everything to get started; you need a foundation to build on, and the rest will come through experience and then refining your education.You can build a basic understanding of investing in 3-6 months.

They've transitional to a basic management structure for most clients. 

Educating yourself about common property maintenance processes doesn’t mean you have to become an expert, but even a basic understanding of repairs like plumbing or lead testing can go a long way in helping you make more informed decisions.It’s also worth discussing with your property manager how they select and negotiate with contractors.

If you have a basement or attic, consider converting it to usable space and attach it to the unit above or below. 

There's obviously opportunity here to build this out and turn it into a basement apartment, which I think would cash flow because of course there's no mortgage.