We want to put up signs and get cameras set up around our perimeter and inside the common areas for added piece of mind for us and the remaining tenants.  

They have video cameras. 

You can see the points of entry, window angles and camera locations. see the news link on this topic recently:https://abc7.com/post/blurring-homes-google-maps-thieves-sea...

However, you really only need to have the septic inspected if you are purchasing a mobile that will stay on the property.A septic inspection typically includes a sewer scope, which involves a small camera being fed through the plumbing.

@Pat Aboukhaled wife & I have thought this would be a great use of failing malls for affordable housing.Unfortunately, as @Greg Scott points out, many people take the path of least resistance, which can ruin the idea.So, you'd want security cameras and maybe even security guards to hold residents accountable. 

@Joshua Melero We had vacant property that were remodeling and considered installing cameras inside the property.

I have put up security cameras out front because of the neighbors.  

.- DM us for one that will do for flat fee.4) Highly recommend having property professionally inspected, including sewer camera.

**Lesson: Camera the sewerage line prior to each closing

I have a duplex where the plumbing was getting backed up.Had a plumber go out there and put a camera in the lines and turns out there are roots growing into the plumbing from a nearby tree.The quote to rip out and replace the plumbing was a staggering number.My thought is to cut down the tree to stop the growing and then eventually put the liner in the plumbing.Any experience with this?