I would split the cost. 

You should think about what you would offer with regards to your competition and compare rents.

I am told that foundation problems are common in this part of Austin.

We want a camera system that:1) Connects to internet for remote monitoring via an office computer (not just a mobile device)2) Has motion-sensor alerts3) Records to the cloud, so a thief can't disable/steal the camera to hide their identityWe plan to remove these cameras once a property is rented and reinstall at the next vacant rental.Wi-Fi connection to internet is possible, but we'd also like to look into cellular connections to internet.What suggestions do you have please?

I agree with you.

For example in many jurisdictions I can STR units in a duplex but cannot STR an ADU (some jurisdictions will let you STR if you owner occupy).

I have put my bare hand into a mass of many thousands of swarming bees and did not get stung. 

I doubt you would be able to get your money back at this point but im not sure how much value you will get from them vs spending that “class” or meeting time reading a real estate book or connecting with local investors. 

I did one on a doctors office I bought and my CPA did it..

My partner and I have built over 70 new homes in Florida.