IMHO Have campaigns for phone text email follow upHave a phone system Have a text system Have an email system Have chat both external and internal Have webforms Have RVMHave conference roomsHave file storage Have a CRM attached and seamlessly churning data  I use calltext.com however I also own it. 

I am a GC so I have some control on the rehab budget if that makes a difference in the calculation. 

As Jay mentioned, massive power requirement that will not get cheaper in time, and along with large water requirements for cooling the rack systems, so targeting locations that provides these necessities is key.

Each unit in teh building has their own master water shutoff valve, so I can't imagine it will be that difficult to get some hardware + automated billing system through someone.

I would make sure they have great systems in place and have great communication with you.

Not trying to cheat the system, just trying to understand what I'm looking as I consider real estate options.Separately, would something with an ADU be considered a multifamily?  

More control over expenses, including what would've been a cap ex in MFH becoming a NNN expense that tenant's cover, or at least a percentage of them if leases are properly structured.

Let me investigate a house with your local agent and take photos of the major systems BEFORE YOU MAKE AN OFFER.

There is an unfinished basement which will likely be permitted to convert into an ADU but might trigger the installation of a fire sprinkler system ($30k).

What's your strategy when you run into guests who are trying to game the system?