We use an old fashioned lock box with a physical key in them, much like ones a Realtor uses.

So your maintenance question is $100/unit/mo not per actual physical doors in a property.

I am trying to understand all the pieces right now to prepare for our next visit and have a clear strategy with taxes since we will be receiving income from this property and have invested to get it into service.The cost seg would have the same requirements, just the ADS accounting method is different, and significantly less advantageous when combined with cost seg.As far as the engineer visit, many firms use remote video walkthroughs in place of having an engineer physically visit the property. 

I attend a few different meetups, but most people are focused on the physical properties.

The Seller DOES still have a "Seller's Disclosure" Statement to complete, but the info requested on that is very specific and very detailed, and is primarily about physical defects.It does not require an "investor friendly" agent, but does require an agent that is at least knowledgeable about the Standard, local, Purchase documents and processes.

You have physical separation and you are not sharing living spaces.

How would this process even work, if I am not physically getting the checks?

Physical therapist, Medical products supplier, health education for people with disabilities. 

If you're looking to get invested in the space in a physical way, you would benefit from attending local meet ups to find some regional investors that would help to shadow/mentor you. 

I would be willing to pay for someone to visit the property, make sure things are in order tenant wise and physical property wise, and maybe based on the amount of work needed charge me a quarterly fee but some charge a percent of whatever job they hire someone for... and some other formats... that I find bring less value but more cost.