If the seller won't let you then make sure in your agreement that you can monitor the loan and it allows you to pay on the sellers behalf if they don't pay the lender.  

This is so common now that it should not surprise anybody.That all being said, vacant houses need either security systems or daily monitoring.

This is a general response, naming attributes, based on your post and what I would want personally:-Monitored, police response -motion sensors in appropriate areas-cameras both indoor (public areas)  & outdoors - motion activated, records to cloud, holds for minimum 48 hours, w/ audio capability-remote light switch control-remote alarm mode settings : on, off, at home-remote lock / unlock entrance-remote doorbell camera (service, delivery interaction)-temperature & flood sensors around appropiate areas-alert capability (various) set for your concerns-ample exterior motion dection led lighting, some solar powered lights that illuminate all night-phone app that you are comfortable usingThere are more attributes I would want but I'll stop here. 

You would, however, have to always monitor payments closely and file for eviction quickly.

I actually think that is one of the best ways to monitor the lower end market.

Also, you can get a wireless motion sensor security cam/monitor with phone app. and that you can actually talk into it.  

Think about how you would monitor payment and period covered. 

Can you devote 10 hours a week as a library monitor to get the house you want?

It connects to your wifi and allows you to fully manage remotely and monitor usage. 

OK, apparently nobody monitors this forum.I found my own answer.