It all seemed very shady and then I began thinking to myself.... what controls are in place to stop these inspectors from deciding an area is "not accessible" and pointing at "flaking paint" to drum up business for their friends and themselves?

Hire a full time agent instead of a part timer playing at being an agent.

Projects like this often run well over budget and take months to complete because once you start pulling things apart more and more problems are discovered.

I’m interested in companies that are reputable and have extensive experience with smaller to medium apartment complexes, say up to 50 units.

In a SFR, you have to make a careful call.In a situation like an apartment it is a bit easier because you are dealing with a larger number of units. 

which part of city(location)is good for rental real estate(multi family,apartment,condo)?

The issue the family has decided to cut my access to sewage access off and won’t even talk about turning it back on.

What this is, is still very much a Roth IRA, just with different processing capacity and therefore the ability to invest outside the stock market into things like real estate, private equity and other allowable asset classes.Such an IRA is not a means for you to access funds to add to your real estate investing. 

We also finished out the above garage apartment that rents separately.

I'm just wondering if there are other considerations that should be factored in, such as incorporating the depreciable asset of the apartment structure in MFH versus mobile home parks being primarily land, etc.