Not sure it could be done with just cameras although that would be one of the first things I put in. 

We knew we could keep cameras up at all times, so it made a lot of sense to us.

Buy an inexpensive video camera and use it during the evenings when not working on the property.

Would also be a great thing to have for a vacation property.The wifi security camera system I like is the Y-cam, mainly because it's the only one I know of that stores your files on the cloud for free.

I sacked all of mine and now self manage.A reliable & honest contractor is the most valuable member of your team.Security cameras (multi family) are worth their weight in gold.

Don't put any fences, cameras, electric there (make the numbers work); unless it is very cheap for electric/camera/internet. 

Take a Picture with a digital Camera of the front of your new client’s home!

Do you have a great camera and love taking photos?

You also need enough storage on the NVR to hold minimum of two weeks CONTINUOUS recording of all/most of the cameras (motion activated only cameras tent to miss a lot of critical views).

Install a camera system to watch over the room.